The meaning of the symbols of vi seen in a dream.

A term applied to a group of substances which exist in minute quantities in natural foods, and which are necessary to normal nutrition, especially in connection with growth and development. Some – A, D, E and K – are fat-soluble and can be stored in the body. The remainder – C, B12 and other members of the B complex – are water-soluble and are quickly excreted. Most vitamins have now been synthesised. When they are absent from the food, defective growth takes place in young animals and children, and in adults various diseases arise; whilst short of the production of actual disease, persistent deprivation of one or other vitamin is apt to lead to a state of lowered general health. Certain de?ciencies in DIET have long been known to be the cause of SCURVY, BERIBERI, and RICKETS. A diet containing foods such as milk, eggs, butter, cheese, fat, ?sh, wholemeal bread, fresh vegetables and fruit should contain su?cient vitamins. Details of the various vitamins are given in APPENDIX 5: VITAMINS.... vitamin

In an artificial environment.... in vitro

Presence of a virus in the blood.... viraemia

Viola odorata. N.O. Violaceae.

Habitat: Damp woods and other shady places.

Features ? This is, perhaps, best known of all wild plants, with its long-stalked, heart- shaped leaves, and delicate, characteristically-scented and coloured flowers.

Part used ? Leaves and flowers.

Action: Antiseptic and expectorant.

Remarkable claims have been made for violet leaves in the treatment of malignant tumours. The case of Lady Margaret Marsham, of Maidstone, was reported in the Daily Mail for November 14th, 1901. This lady, suffering from cancer of the throat, used an infusion, which was left to stand for twelve hours, of a handful of fresh violet leaves to a pint of

boiling water. After a fortnight of warm fomentations with this liquid the growth was said to have disappeared.

The same newspaper, under date March 18th, 1905, told its readers that violet leaves as a cure for cancer were advocated in the current issue of the Lancet, where a remarkable case was reported by Dr. William Gordon, M.D. Such accounts as these, although interesting, should be read with considerable reserve.... violet

The relative infectiousness of a microorganism, or its ability to overcome the defences of the host.... virulence

See SQUINT.... double vision

The virus that causes glandular fever or infectious MONONUCLEOSIS. It is similar to the viruses that cause herpes and is associated with BURKITT’S LYMPHOMA. It has been suggested as precipitating some attacks of MYALGIC ENCEPHALOMYELITIS (ME), also known as CHRONIC FATIGUE SYNDROME (CFS).... epstein barr virus

A coagulative blood protein that is a constituent of the COAGULATION cascade – an essential component in the clotting of blood. Those people with the inherited disorder, HAEMOPHILIA, have abnormally low amounts of factor VIII and so bleed more when cut. They are treated with a concentrated version to reduce the tendency to bleed.... factor viii

A dye belonging to the rosaniline group. It is a useful super?cial antiseptic for use on unbroken skin.... gentian violet

In a living body.... in vivo

One of the minute processes thickly distributed upon the inner surface of the small INTESTINE, giving it, to the naked eye, a velvety appearance, and greatly assisting absorption of digested food. (See also DIGESTION; ABSORPTION; ASSIMILATION.)... villus

The condition in which masculine characteristics develop in the female; it is commonly the result of an overactive suprarenal gland (see ADRENAL GLANDS), or of a tumour of its cortex. It may also result from an ANDROGEN-secreting ovarian tumour (see OVARIES, DISEASES OF) and also from the POLYCYSTIC OVARY SYNDROME. The overproduction of male-sex (androgen) hormones can produce excess growth of hair, male pattern hairline, stopping or disruption of MENSTRUATION, enlargement of the CLITORIS and conversion to a masculine body shape.... virilism

The scienti?c study of viruses (see VIRUS).... virology

An extremely small infective agent requiring living cells for replication. Are either RNA or DNA, never both.... virus

The general name given to the larger organs lying within the cavities of the chest and abdomen. The term ‘viscus’ is also applied individually to these organs.... viscera

See VISION.... visual acuity

A disease in which small or large areas of skin lose their pigment and become white because of a reduction in the body’s production of MELANIN. The hair may be similarly affected. Probably a consequence of an autoimmune mechanism, vitiligo is associated with other autoimmune diseases such as thyroiditis (see THYROID GLAND, DISEASES OF) and ADDISON’S DISEASE. There is no cure; the vitiliginous skin must be protected from sunburn.... vitiligo

For more than a century the medical profession has aimed at maintaining as high a standard as possible for vivisection. It was the medical profession led by Dr James Paget that was responsible for the passing of the Cruelty to Animals Act 1876, which aimed to eliminate cruelty. The in?iction of pain was reduced to a minimum by the use of anaesthetics (see ANAESTHESIA), and the licensing and surveillance of animal experiments was ensured.

Most experiments are carried out on specially bred mice and rats. Fewer than 1 per cent are done on cats, dogs, non-human primates, farm animals, frogs, ?sh and birds. Control on experiments has recently been strengthened.

The great majority of animal experiments are done without anaesthesia because feeding experiments, taking blood, or giving injections does not require anaesthetics in animals any more than in humans. Universities in Britain are responsible for fewer than one-?fth of animal experiments; commercial concerns and government institutions are responsible for most of the rest. Tests on cosmetics account for under 1 per cent of all animal work, but are necessary because such materials are often applied with great frequency – and for a long time – to the skin of adults and infants.

The use of tissue cultures and computer models instead of live animals are methods of research and investigation that are being increasingly used. There is, however, a limit to the extent to which infection, cancer, or drugs can be investigated on cultures of tissue cells. Computerised or mathematical modelling of experiments is probably the most promising line of development.... vivisection

Jacq. ex Stapf. 15

Family: Ranunculaceae. ^A

Habitat: The alpine Himalayas of Sikkim, Nepal, the adjoining parts of southern Tibet, between altitudes of 3,000 m and 4,800 m. Ayurvedic: Prativishaa, Shyaamkan- daa, Patis. Folk: Bikhamaa.

Action: Root—antiemetic, antidiar- rhoeal, antirheumatic, antiperiodic.

The root contains diterpenoid alkaloids and a nitrogenous non-alkaloid compound, benzamide. Alkaloids include vakognavine, palmatisine, vaka- tisine, vakatisinine and vakatidine.

The root is intensely bitter, like quinine, is used with Piper longum for diarrhoea and vomiting; used externally as an application for rheumatism.... aconitum violaceum

Hypochromic ANAEMIA and di?culty in swallowing due to an oesophageal web.... plummer-vinson syndrome

See MYALGIC ENCEPHALOMYELITIS (ME).... post-viral fatigue syndrome

See prion.... slow virus

The ability of an organism to survive on its own. In the United Kingdom, the legal age of the viability of a FETUS is 24 weeks.... viable

See SILDENAFIL CITRATE.... viagra

(1) An instrument used for vibratory massage to improve the tone of muscles and to relax them. It is of help in speeding the healing process after muscle or ligament strains.

(2) A penis-shaped, battery-driven device used by women to attain sexual stimulation and climax.... vibrator

A bacterium with a curved shape, such as the vibrio of CHOLERA.... vibrio

A group of powerful CYTOTOXIC (anticancer) drugs used to treat acute LEUKAEMIA, LYMPHOMA and some solid tumours such as breast and lung cancers. Originally derived from the periwinkle plant, the latest vinca alkaloid (VINORELBINE) is a semi-synthetic drug. These alkaloids, which are given intravenously, have potentially serious side-effects on the nervous system and also suppress the production of MYELOID cells in the bone marrow.... vinca alkaloids

A semi-synthetic vinca alkaloid (see VINCA ALKALOIDS) CYTOTOXIC drug recently introduced for the treatment of advanced breast cancer, when anthracycline cytotoxic antibiotics such as DOXORUBICIN have failed. Vinorelbine is also used to treat advanced non-small-cell lung cancer (see LUNGS, DISEASES OF). As with all vinca alkaloids, the drug has neurotoxic effects, usually affecting the PERIPHERAL NERVOUS SYSTEM and AUTONOMIC NERVOUS SYSTEM. It may also cause (reversible) hair loss (ALOPECIA). The drug is given intravenously.... vinorelbine

Also called EBOLA VIRUS DISEASE. A usually fatal infection caused by a virus related to that of MARBURG DISEASE. Two large outbreaks of it were recorded in 1976 (one in the Sudan and one in Zaïre), with a mortality, respectively, of 50 and 80 per cent, and the disease reappeared in the Sudan in 1979. After an incubation period of 7–14 days, the onset is with headache of increasing severity, and fever. This is followed by diarrhoea, extensive internal bleeding and vomiting. Death usually occurs on the eighth to ninth day. Infection is by person-to-person contact. Serum from patients convalescent from the disease is a useful source of ANTIBODIES to the virus.... viral haemorrhagic fever

Infection of the lung tissue by a VIRUS. Causes of this type of pneumonia include ADENOVIRUSES, COXSACKIE VIRUSES and in?uenza virus. Viral infections do not respond to ANTIBIOTICS and treatment is symptomatic, with antibiotics used only if the patient develops secondary bacterial infection. In a previously healthy individual the viral infection is usually self-limiting, but in vulnerable patients – the elderly or those with pre-existing disease – it can be fatal.... viral pneumonia

Complete infective virus particle.... virion

Most vision tests examine a person’s sharpness of VISION (visual acuity) and often of the ?eld of vision (see VISION, FIELD OF). Refraction tests assess whether a person has an error that can be corrected with glasses such as ASTIGMATISM, HYPERMETROPIA or MYOPIA. Visual acuity is tested using a Snellen chart when the patient tries to read letters of di?ering standard sizes from 6 metres away. The optician will prescribe lenses to correct any defects detected by vision tests.... vision tests

Broadly speaking, vision is the ability to see.

Pathway of light from the eye to the brain Light enters the EYE by passing through the transparent cornea, then through the aqueous humour ?lling the anterior chamber. It then passes through the pupil, through the lens and the vitreous to reach the retina. In the retina, the rod and cone photoreceptors detect light and relay messages in the form of electrochemical impulses through the various layers of the retina to the nerve ?bres. The nerve ?bres carry messages via the optic nerve, optic chiasma, optic tract, lateral geniculate body and ?nally the optic radiations to the visual cortex.

Here in the visual cortex these messages are interpreted. It is therefore the visual cortex of the BRAIN that ‘sees’.

Visual acuity Two points will not be seen as two unless they are separated by a minimum distance. This distance is such that the objects are so far apart that the lines joining them to the eye enclose between them (subtend) an angle of at least one minute of a degree. This amount of separation allows the images of the two points to fall on two separate cones (if the light from two points falls on one cone, the two points would be seen as a single point). There are many tests of visual acuity. One of the more common is the Snellen test type. This is made up of many letters of di?erent size. By conventions the chart is placed 6 metres away from the patient. Someone able to see the lowest line at this distance has a visual acuity of 6/4. If they are only able to see the top letter they have 6/60 vision. ‘Normal’ vision is 6/6.

Colour vision ‘White light’ is made up of component colours. These can be separated by a prism, thereby producing a spectrum. The three cardinal colours are red, green, and blue; all other colours can be produced by a varying mixture of these three. Colour vision is a complex subject. The trichromat theory of colour vision suggests that there are three types of cones, each type sensitive to one of the cardinal colours. Colour perception is based on di?erential stimulation of these cone types. The opponent colour theory suggests that each cone type can generate signals of the opposite kind. Output from some cones can collaborate with the output from others or can inhibit the action of other cones. Colour perception results from these various complex interactions.

Defective colour vision may be hereditary or acquired, and can occur in the presence of normal visual acuity. HEREDITARY DEFECTIVE COLOUR VISION is more common in men (7 per cent of males) than women (0·5 per cent of females). Men are affected, but women convey the abnormal gene (see GENES) to their children. It occurs because one or more of the photopigments of the retina are abnormal, or the cones are damaged. Red-green colour defect is the most common. ACQUIRED DEFECTIVE COLOUR VISION is the result of disease of the cones or their connections in the retina, optic nerve or brain – for example, macular disease, optic neuritis. Col-our vision can be impaired but not lost as a result of corneal opaci?cation or cataract formation (see under EYE, DISORDERS OF).

TESTS OF COLOUR VISION These use specially designed numbers made of coloured dots surrounded by dots of confusing colour (e.g. plates).... vision

The list of disorders resulting in poor or dim vision is huge. Disturbance of vision can result from an uncorrected refractive error, disease or injury of the cornea, iris, lens, vitreous, retina, choroid or sclera of the EYE. It may also result from disease or injury to the structures comprising the visual pathway from the retina to the occipital cortex (see VISION – Pathway of light from the eye to the brain) and from lesions of the structures around the eye – for example, swollen lids, drooping eyelids. (See EYE, DISORDERS OF.)... vision, disorders of

The amount of air that can be forcibly exhaled from the lungs after a deep inspiration. (See RESPIRATION.)... vital capacity

An indication that an individual is still alive. Chest movements (resulting from respiration), the existence of a pulse (showing that the heart is still beating) and constriction of the pupil of the eye in response to bright light are all vital signs. Other tests such as assessment of brain activity may also be needed in some circumstances: for example, when a patient is on a life-support machine. (See also GLASGOW COMA SCALE.)... vital sign

The pulse, respiration, temperature and blood pressure.... vital signs

Systematically tabulated information concerning births, marriages, divorces, separations and deaths, based on registrations of those vital events.... vital statistics

A commercially trademarked alloy of cobalt and chromium used to make instruments, prostheses (see PROSTHESIS), surgical appliances and dentures. Its inert properties make it ideal for use in contact with live tissues such as bone and muscle.... vitallium

A term used to describe animal groups – including most mammals – in which the embryos (see EMBRYO) develop inside the mother’s body with the young being born alive (in contrast to, say, birds and reptiles which hatch from eggs).... viviparous

A mosquito-borne viral infection that is normally harmless to healthy people who, if infected, develop a mild ?u-like illness. However, if the elderly and those in poor health, particularly immunocompromised patients, are infected, they may develop fatal in?ammation of the brain and spinal cord. In Israel in 2000, 12 people died and more than 155 survived an outbreak; and in New York in 1999, more than 60 people were infected, of whom six died. The disease was ?rst reported in Uganda in 1937 and became ENDEMIC in the Middle East and Africa, recently spreading to Europe, central Asia, Oceania and America. Mosquitoes bearing the ?aviviridae-family virus usually contract it by biting infected poultry, but the infection has been found in mammals, such as cats, dogs and horses.... west nile virus

Refer: ALCOHOLISM, CATARACT, CONJUNCTIVITIS, DIABETES, ECLAMPSIA, GLAUCOMA, IRITIS, MIGRAINE, MULTIPLE SCLEROSIS, RETINITIS, SHOCK. ... blurred vision

Loss of the peripheral visual field to the extent that only objects straight ahead can be seen clearly. Tunnel vision is most commonly caused by chronic glaucoma. Retinitis pigmentosa is another possible cause.... tunnel vision

A method of diagnosing genetic abnormalities in a fetus using a small sample of tissue taken from the chorionic villi at edge of the placenta. Because the cells have the same chromosome makeup as those in the fetus, they can be used to detect genetic abnormalities. Chorionic villus sampling (CVS) is usually performed in the first 3 months of pregnancy in women who are at a higher-than-normal risk of having a child with a chromosomal disorder, such as Down’s syndrome, or a genetic disease, such as thalassaemia. Chromosome analysis of the villi cells takes place in the laboratory. CVS slightly increases the risk of miscarriage. choroid A layer of tissue at the back of the eye, behind the retina. The choroid contains many blood vessels that supply nutrients and oxygen to the retinal cells and to surrounding tissues in the eye. choroiditis Inflammation of the choroid. It is often caused by infections such as toxocariasis or toxoplasmosis, more rarely by sarcoidosis, syphilis, and histoplasmosis. It sometimes has no obvious cause. Treatment includes corticosteroid drugs for the inflammation, and antibiotic drugs for any causative infection.... chorionic villus sampling

A method of treating infertility in which an egg (ovum) is surgically removed from the ovary and fertilized outside the body.

The woman is given a course of fertility drugs to stimulate release of eggs from the ovary. This is followed by ultrasound scanning to check the eggs, which are collected by laparoscopy immediately before ovulation. They are then mixed with sperm in the laboratory. Two, or sometimes more, fertilized eggs are replaced into the uterus. If they become safely implanted in the uterine wall, the pregnancy usually continues normally.

Only about 1 in 10 couples undergoing in vitro fertilization achieves pregnancy at the 1st attempt, and many attempts may be needed before a successful pregnancy is achieved. Modifications of the technique, such as gamete intrafallopian transfer (GIFT), are simpler and cheaper than the original method. in vivo Biological processes occurring within the body. (See also in vitro.)... in vitro fertilization

A vinca alkaloid used to treat certain cancers. One particular side effect of vincristine is peripheral or autonomic neuropathy; but, unlike the other vinca alkaloids, it causes very little reduction in blood-cell production by the bone marrow. Other side effects may include abdominal pain, constipation, and reversible alopecia.... vincristine

The development in a woman of male characteristics as a result of overproduction of androgen hormones by the adrenal glands and/or ovaries.

This may be due to various conditions such as certain adrenal tumours, polycystic ovary (see ovary, polycystic) and some other ovarian cysts, or congenital adrenal hyperplasia.... virilization

The total area in which visual perception is possible while a person is looking straight ahead.

The visual fields normally extend outwards over an angle of about 90 degrees on either side of the midline of the face, but are more restricted above and below, especially if the eyes are deep-set or the eyebrows are prominent.

The visual fields of the 2 eyes overlap to a large extent, giving binocular vision.

Partial loss of the visual field may occur in glaucoma or stroke.... visual field

See vitamin B; vitamin B complex.... vitamin b

A fat-soluble vitamin essential for normal growth, for the formation of bones and teeth, for cell structure, for night vision, and for protecting the linings of the respiratory, digestive, and urinary tracts against infection.

Vitamin A is absorbed by the body in the form of retinol. This is found in liver, fish-liver oils, egg yolk, dairy produce, and is added to margarines. Carotene, which the body converts into retinol, is found in various vegetables and fruits.

Vitamin A deficiency is rare in developed countries. In most cases, it is due to malabsorption. Vitamin A deficiency may also result from long-term treatment with certain lipid-lowering drugs. Deficiency is common in some developing countries due to poor diet. The first symptom of deficiency is night blindness, followed by dryness and inflammation of the eyes (see xerophthalmia), keratomalacia, and eventually blindness. Deficiency also causes reduced resistance to infection, dry skin, and, in children, stunted growth.

Prolonged excessive intake of vitamin A can cause headache, nausea, loss of appetite, skin peeling, hair loss, and irregular menstruation. In severe cases, the liver and spleen become enlarged. Excessive intake during pregnancy may cause birth defects. In infants, excessive intake may cause skull deformities, which disappear if the diet is corrected.

The drug tretinoin (a derivative of vitamin A) is used to treat severe acne.... vitamin a

A water-soluble vitamin that plays an essential role in the activities of various enzymes. Vitamin C is important for the growth and maintenance of healthy bones, teeth, gums, ligaments, and blood vessels; in the production of certain neurotransmitters and adrenal gland hormones; in the response of the immune system to infection; in wound healing; and in the absorption of iron.

The main dietary sources are fruits and vegetables. Considerable amounts of vitamin C are lost when foods are processed, cooked, or kept warm.

Mild deficiency of vitamin C may result from a serious injury or burn, major surgery, the use of oral contraceptives, fever, or continual inhalation of carbon monoxide (from traffic fumes or tobacco smoke). It may cause weakness, general aches, swollen gums, and nosebleeds. More serious deficiency is usually caused by a very restricted diet. Severe deficiency leads to scurvy and anaemia.

If the daily dose of vitamin C exceeds about 1g, it may cause nausea, stomach cramps, diarrhoea, or kidney stones

(see calculi, urinary tract).... vitamin c

The transparent, gellike body that fills the rear compartment of the eye between the crystalline lens and the retina.

The vitreous humour consists almost entirely of water.... vitreous humour

The collective term for a group of substances that help to regulate the balance of phosphate and calcium in the body, aid calcium absorption in the intestine, and promote strong bones and teeth.

Good sources include oily fish, liver, and egg yolk; vitamin D is also added to margarines. In the body, vitamin D is synthesized by the action of ultraviolet light on a particular chemical in the skin.

Deficiency may occur in people with a poor diet, in premature infants, and in those deprived of sunlight. It can also result from malabsorption. Other causes include liver or kidney disorders and some genetic defects. Prolonged use of certain drugs, such as phenytoin, may also lead to deficiency. Deficiency in young children causes rickets; long-term deficiency in adults leads to osteomalacia.Excessive intake of vitamin D may lead to hypercalcaemia and abnormal calcium deposits in the soft tissues, kidneys, and blood vessel walls.

In children, it may cause growth retardation.... vitamin d

The collective term for a group of substances that are essential for normal cell structure, for maintaining the activities of certain enzymes, and for the formation of red blood cells. Vitamin E also protects the lungs and other tissues from damage by pollutants and is believed to slow aging of cells. Sources include vegetable oils, nuts, meat, green vegetables, cereals, and egg yolk.

Dietary deficiency is rare; deficiency is most common in people with malabsorption, certain liver disorders, and in premature infants. It leads to the destruction of red blood cells, which eventually leads to anaemia. In infants, deficiency causes irritability and oedema.

Prolonged excessive intake of vitamin E may cause abdominal pain, nausea, and diarrhoea.

It may also reduce intestinal absorption of vitamins A, D, and K.... vitamin e

A fat-soluble vitamin that is essential for the formation in the liver of substances that promote blood clotting. Good sources are green vegetables, vegetable oils, egg yolk, cheese, pork, and liver. Vitamin K is also manufactured by bacteria in the intestine.

Dietary deficiency rarely occurs.

Deficiency may develop in people with malabsorption, certain liver disorders, or chronic diarrhoea.

It may also result from prolonged treatment with antibiotics.

Newborns lack the intestinal bacteria that produce vitamin K and are routinely given supplements to prevent deficiency.

Vitamin K deficiency may cause nosebleeds and bleeding from the gums, intestine, and urinary tract.

In rare, severe cases, brain haemorrhage may result.

Excessive intake of vitamin K is not known to cause harmful effects.... vitamin k

Spirituality, Protection ... african violet

(Linn.) Lam

Synonym: Daucus visnaga Linn. Visnaga daucoides Gaertn.

Family: Umbelliferae; Apiaceae.

Habitat: Cultivated as a garden ornamental; runs wild at many places in Jammu region.

English: Khella.

Folk: Paashaanabhedi (controversial; Bergenia ligulata has been equated with the classical Paashaanabheda).

Action: Antispasmodic in renal colic, bronchial asthma, whooping cough (used by Unani physicians), vasodilator (in angina pectoris).

Key application: German Commission E approved the herb on 13 March 1986, but due to information on potential risks, its status was changed to unapproved on 15 April 1994.

Khella contains khellin (1%), vis- nagin, khellol glycoside, flavonoids, sterols, volatile oil (0.2%). Khellin and visnagin exert a powerful antispas- modic effect on the smaller bronchial muscles, the coronary arteries and on the urinary tubules. Khellin provides relief to asthmatic patients. The drug also relieves painful spasm of stone in kidney and bladder (no more used for expelling kidney stones).

Khella does not reduce blood pressure in spite of being a vasodilator.

Khellin is toxic at 100 mg. (Francis Brinker.)

Khella is used topically for vitiligo and psoriasis. The Khellin constituent is similar to the psoralen nucle

us and might be useful as a photosensi- tizer in patients with psoriasis. (Natural Medicines Comprehensive Database, 2007.)

(Several modern drugs including amiodarone, nifedipine and cromolyn have been developed from Khella.)... ammi visnaga

A mosquito-borne arbovirus causing symptoms similar to Ross River virus infection in Australia. (See also Ross River virus).... barmah forest virus

A procedure that links COMPUTED TOMOGRAPHY of the COLON (see also INTESTINE) with techniques that produce three-dimensional views of the mucosa of the large bowel similar to those obtained during traditional colonoscopy. Early experience suggests that the new technique produces better results than barium enemas (see ENEMA) and is almost as e?ective as conventional colonoscopy. Virtual colonoscopy o?ers faster results, and image analysis will probably soon be automated. The procedure is easy, non-invasive, safe and complete; once the need for bowel cleansing is eliminated (as seems likely) it will provide a prominent tool in screening for cancer of the colon and RECTUM.... colonoscopy, virtual

A scheme utilizing volunteers to visit, spend time with and become friends with an older person in his/her place of residence.... community visitor scheme

A group of viruses so-called because they were ?rst isolated from two patients with a disease resembling paralytic POLIOMYELITIS, in the village of Coxsackie in New York State. Thirty distinct types have now been identi?ed. They constitute one of the three groups of viruses included in the family of ENTEROVIRUSES, and are divided into two groups: A and B. Despite the large number of types of group A virus (24) in existence, evidence of their role in causing human disease is limited. Some, however, cause aseptic MENINGITIS, non-specicifc upper respiratory infection and MYOCARDITIS, and others cause a condition known as HERPANGINA. HAND, FOOT AND MOUTH DISEASE is another disease caused by the A group. All six types of group B virus have been associated with outbreaks of aseptic meningitis, and they are also the cause of BORNHOLM DISEASE. Epidemics of type B2 infections tend to occur in alternate years. (See VIRUS.)... coxsackie viruses

Health visitors are community nurses with a special training who form an important part of the primary health-care team. Working in close conjunction with general practitioners, they are primarily responsible for illness prevention and health screening and education of children and elderly people in the community.... health visitors

Virus of Flying Foxes (Fruit Bats) in Australia. Can infect horses and humans. Also known as the Equine morbillivirus.... hendra virus

Linn. Jacq.

Family: Sapindaceae.

Habitat: North-western Himalaya up to 1,350 m, in Punjab, South India, ascending to 2,400 m on Nilgiris. Also planted as a hedge plant in Northern India.

English: Jamacia Switch Sorrel.

Ayurvedic: Raasnaa (substitute, used in Andhra Pradesh). (Raasnaa is equated with Pluchea lanceolata C. B. Clarke.)

Siddha/Tamil: Virali, Velari.

Action: Leaves—anti-inflammatory and antibacterial (used in the treatment of swellings, burns, wounds), febrifuge, embrocation of leaves is applied to sprains. Bark— astringent and anti-inflammatory. Aerial parts—hypoglycaemic.

The plant contains bioflavonoids (vitamin P) which are biologically active in improving blood circulation and strengthening capillaries. Aqueous and alcoholic extracts of the plant exhibited cardioinhibitory and coronory constricting, also spasmolytic, sedative and hypotensive activity.

The leaves and pods gave iso-rham- netin-3-O-rutinoside, quercetin-3-O- galactoside and quercetin-3-O-rutino- side. Resin gave a diterpene carboxylic acid (hautriwaic acid). Flowers gave kaempferol.... dodonaea viscosa

Ebola virus disease is another name for VIRAL HAEMORRHAGIC FEVER. The ebola virus is one of the most virulent micro-organisms known. Like the marburg virus (see MARBURG DISEASE), it belongs to the ?lovirus group which originates in Africa. Increased population mobility and wars have meant that the infection occasionally occurs elsewhere, with air travellers developing symptoms on returning home.

Treatment As the disease can be neither prevented nor cured, treatment is supportive, with strict anti-infection procedures essential as human-to-human transmission can occur via skin and mucous-membrane contacts. Incubation period is 5–10 days. Fever with MYALGIA and headache occur initially, often accompanied by abdominal and chest symptoms. Haemorrhagic symptoms soon develop and the victim either starts to improve in the second week or develops multi-organ failure and lapses into a coma. Mortality ranges from 25 to 90 per cent.... ebola virus disease

Willd.

Family: Tiliaceae.

Habitat: Punjab, Rajasthan, Gujarat, Andhra Pradesh and Tamil Nadu.

English: Tamthar.

Siddha/Tamil: Kullai.

Folk: Dhohan (Rajasthan), Jalidar (Punjab), Kharamati (Maharashtra).

Action: Root—antidiarrhoeal. Root and bark—used in genitourinary infections, syphilis and smallpox.

The methanol extract of the roots contain beta-carboline alkaloids, harman, harmine, harmol, harmalol and harmaline.

The roots are also used to treat cough.... grewia villosa

The most common causes of viral hepatitis are those caused by the Hepatitis A, B, C, D, E and G viruses. Hepatitis F virus has been described but is a doubtful entity. Other viruses which can cause hepatitis include the Epstein-Barr Virus, cytomegalovirus, and the Yellow Fever virus.... hepatitis viruses

Causative virus of genital herpes and herpes labalis or cold sores.... herpes simplex virus

One member of a group of viruses containing DNA which cause latent infections in animals and humans. Viruses from this group cause HERPES SIMPLEX, HERPES ZOSTER (shingles) and CHICKENPOX, and include CYTOMEGALOVIRUS (CCMV) and EPSTEIN-BARR VIRUS.... herpes viruses

Causative virus of chicken pox and shingles.... herpes zoster virus

The name of the causative agent of AIDS.... hiv (human immunodeficiency virus)

Professional visits in the home.... home visits

See AIDS/HIV.... human immunodeficiency virus

Fertilisation of the egg (ovum) outside the body. The fertilised ovum is then incubated until the blastocyst stage develops, when it is implanted into the UTERUS. The procedure was developed in Britain and the ?rst successful in vitro baby, a girl, was born in 1978. IVF is used when a woman has blocked FALLOPIAN TUBES or when the sperm and ovum are unable to fuse in the reproductive tract. Hormone treatment results in the potential mother’s producing several mature ova, some of which are removed from the ovary using a LAPAROSCOPE and fertilised with her partner’s semen. (See ASSISTED CONCEPTION.)... in vitro fertilisation (ivf)

Blume.

Synonym: Merremia vitifolia (Burm. f.) Hallier. Convululus vitifolius Burm. f.

Family: Convolvulaceae.

Habitat: Throughout warmer parts of India, except the north-western arid region.

Folk: Nauli, Nawal (Maharashtra).

Action: Diuretic. Used in strangury, urethral discharges.... ipomoea vitifolia

A viral infection of the iris. It appears red, swollen, and pupil contraction and relaxation is erratic and pulled. The usual cause is a herpes infection, often resident in the trigeminal nerve, and reoccurring during times of stress or sympathetic to a larger viral condition.... iritis, viral

Linn.

Family: Pinaceae; Cupressaceae.

Habitat: Native to North America; introduced into India.

English: Pencil Cedar, Red Cedar.

Action: The berries in decoction are diaphoretic and emmenagogue like those of common juniper; leaves are diuretic. Red cedar oil is used in the preparation of insecticides. Small excrescences, called cedar apples, are sometimes found on the branches. These are used as an anthelmintic. (Yellow Cedar is equated with Thuja occidentalles.)

Juniperus procera Hochst. (East African Cedar), J. bermudiana Linn. (Bermuda Cedar) andJ.ChinensisLinn. (Chinese Juniper) have also been introduced into India.... juniperus virginiana

Linn.

Family: Compositae; Asteraceae.

Habitat: Native to Europe. Imported into India.

English: Bitter Lettuce, Wild Lettuce.

Unani: Kaahuu Sahrai (var.), Kaahuu Barri (var.).

Action: Mild sedative, hypnotic, (once used as a substitute for opium), anodyne, expectorant.

Key application: As sedative. (The British Herbal Pharmacopoeia.)

Used in insomnia, nervous excitability, anxiety, restlessness, hyperactivity in children, nymphomania, smoker's cough, irritable cough and bronchitis.

Aerial parts contain sesquiterpene glycosides.

The leaves and dried juice contain lacticin, lactucopicrin (sesquiterpene lactones); flavonoids (mainly based on quercetin); coumarins (cichoriin and aesculin); N-methyl-beta-phenethy- lamine; triterpenes include taraxas- terol and beta-amyrin. The sesquiterpene lactones have a sedative effect.

The Wild Lettuce also contains hyos- cyamine, while the dried sap is devoid of it. Morphine content has been found in low concentrations, too low to have pharmacological effect. (Natural Medicines Comprehensive Database, 2007.)

The oil of seeds is used for arteriosclerosis.

Synonym: L. vulgaris Ser. L. leucanth Rusby. Cucurbita siceraria Mol.

Family: Cucurbitaceae.

Habitat: Throughout India.

English: Bitter Bottle-Gourd.

Ayurvedic: Katu-tumbi, Tumbini, Ikshavaaku. Tiktaalaavu, Pindapha- laa.

Unani: Kaddu-e-talkh (bitter var.).

Siddha/Tamil: Suraikai.

Action: Pulp—purgative, emetic. Leaf—used in jaundice.

Cucurbita lagenaria Linn. is equated with Lauki or Sweet Bottle-Guard, used all over India as a vegetable.

Cucurbita siceraria Mol. is equated with Titalauki or the Bitter Bottle- Gourd. Bitter fruits yield 0.013% of a solid foam containing cucurbitacin B,D,G and H, mainly cucurbitacin B. These bitter principles are present in the fruit as aglycones. Leaves contain cucurbitacin B, and roots cucurbitacins B, D and traces of E. The fruit juice contains beta-glycosidase (elaterase).

Plants which yield non-bitter fruits contain no bitter principles or elat- erase; their roots are not bitter.... lactuca virosa

A group of rhabdoviruses closely related to the rabies virus. The Australian Bat Lyssa virus is found in flying foxes (fruit bats) and can cause a rabies-like disease in humans. The disease should be handled as for rabies and can be prevented by using rabies vaccine.... lyssa virus

A herpes virus of monkeys that can infect humans, usually through handling monkey tissues at autopsy or in the laboratory.... monkey b virus

Virus first identified from the village of Nipah in Malaysia. Carried by flying foxes (fruit bats). Can infect pigs and humans.... nipah virus

These include the human papilloma viruses (HPV), of which nearly a hundred strains have been identi?ed. HPV cause verrucae (see WARTS) on skin and, less often, on the mucous membranes of mouth, larynx, genitalia and the cervix. Some strains may predispose to eventual cancer.... papova viruses

These are included in the paramyxoviruses (see MYXOVIRUSES) and divided into four types, all of which cause infection of the respiratory system (see RESPIRATION). Infection with type 3 begins in May, reaches a maximum in July or August and returns to base-line level in October. Types 1 and 2 are predominantly winter viruses. Children are commonly affected and the manifestations include CROUP, fever, and a rash.... parainfluenza viruses

These infectious agents derive their name from pico (small) and from RNA (because they contain ribonuleic acid). They are a group of viruses which includes the ENTEROVIRUSES and the RHINOVIRUSES.... picorna viruses

Schott.

Family: Araceae.

Habitat: Maharashtra, Karnataka.

Folk: Rukhaalu, Maanakand (Maharashtra). Lakshmanaa is a doubtful synonym

Action: Root—use for obstinate skin diseases and pruritus; also for disinfecting genitourinary tract and for promoting conception. Alocasia indica and Eulophia nuda are also known as Maanakanda in Indian medicine. Alocasia indica is used in Siddha medicine as an anti-inflammatory and diuretic herb.... remusatia vivipara

Willd.

Family: Labiatae; Lamiaceae.

Habitat: Native to Africa; introduced into India.

English: Fever plant of Sierra Leone.

Folk: Taap-maari Tulasi (Maharashtra).

Action: Leaves—febrifugal. Used as a remedy for coughs and fevers. Oil—antiseptic.

Ocimum viride species, cultivated in Jammu-Tawi, gives maximum oil yield

(0.4%) at full bloom stage and highest percentage of thymol (55.12%) in the oil, which can be used as a substitute for thyme-ajowan oil.... ocimum viride

Linn.

Family: Polygonaceae.

Habitat: The Himalayas from Kashmir to Sikkim at 3,3004,800 m.

English: Viviparous Bistort.

Unani: Anjabaar. (substitute).

Folk: Billori, Maamekh (Punjab).

Action: Rootstock—astringent, antidiarrhoeal, antileucorrhoeic, antiseptic, antiperiodic. Used in haemoptysis; also for gleet. A decoction is used as a gargle for sore throat and spungy gums, as a lotion for ulcers.... polygonum viviparum

Wt. & Arn.

Family: Papilionaceae; Fabaceae.

Habitat: Orissa throughout South India and Gujarat.

Ayurvedic: Sanaparni, Shaalaparni (Kerala).

Siddha/Tamil: Neermalli.

Action: Root—astringent, febrifuge, antirheumatic. A decoction or powder is used for biliousness and diarrhoea. Used as a substitute for Desmodium gangeticum (Shaalaparni) in South India.

Leucopelargonidin has been isolated from the root.... pseudarthria viscida

Usually known as RSV, this is one of the MYXOVIRUSES. It is among the major causes of BRONCHIOLITIS and PNEUMONIA among infants aged under 6 months; its incidence has been increasing, possibly due to atmospheric pollution.... respiratory syncytial virus (rsv)

A community which provides several levels/types of housing and services for older people, ranging from independent living units to nursing homes, on one site but generally in separate buildings.... retirement village / retirement community

Roxb.

Family: Rhamnaceae.

Habitat: Throughout Himalayas, Khasi and Jaintia Hills, hills of Orissa, Madhya Pradesh, and the Nilgiris.

English: Indian Buckthorn.

Folk: Chhaduaa, Tadru (Punjab), Chadolaa (Garhwal).

Action: Ripe fruit—purgative, emetic. Given in the affections of spleen. (Purgative action not found in the bark.)

The bark showed only traces of hy- droxymethyl anthraquinones and did not exhibit purgative action on experimental animals.

The plant contains the enzyme, rhamnodiastase, capable of hydrolyz- ing flavonoid glycosides.... rhamnus virgatus

A mosquito-borne arbovirus causing epidemic polyarthritis in Australia and certain islands of the Western Pacific to which it has spread.... ross river virus

Linn. (The Himalayas from Kashmir to Sikkim) is known as Basket Willow and the Osier.

The bark contains 8.2%-8.8% tannin and phenol glycosides, fragilin, picein, salicin (0.13%), salicortin, salireposide, triandrin and vimalin. Salicase, and calcium and potassium nitrates are also reported from the bark.

Dosage: Bark—59-100 ml decoction. (CCRAS.)... salix viminalis

An obsolete name for CHOREA.... st vitus’s dance

Benn.

Family: Meliaceae.

Habitat: Gujarat to Karnataka, both on the hills and the coasts, and in the Anamalai Hills in Tamil Nadu up to 1,200 m.

Folk: Pandre, Kapuur—bhendi (Maharashtra).

Action: Root—applied to fistula; also administered in leprosy.

Villosterol, a pregnene steroid, has been isolated from the plant.

T. virens Linn. (Kerala) is reported to be employed in the treatment of fits.... turraea villosa

(English) One who is full of life; vivacious Veean, Vean, Veane, Vyan, Vyanne, Vyane... vian

(American) Form of Bianca, meaning “a shining, fair-skinned woman” Viancah, Vianka, Viancka, Vyanca, Vyanka, Vyancka, Vianica, Vianeca, Vyaneca, Vyanica... vianca

(Danish) A small woman Vibekeh, Vibeek, Vibeeke, Vybeke, Viheke... vibeke

(Hindi) Of the sacred ash; a symbol Vibuti, Vibhutie, Vibhutee... vibhuti

Linn.

Family: Compositae; Asteraceae.

Habitat: The temperate Himalayas from Kashmir eastwards and in Khasi Hills, up to 3,000 m.

English: European Goldenrod, Woundwort.

Action: Anticatarrhal, diaphoretic, anti-inflammatory, antiseptic to mucous membranes.

Key application: In irrigation therapy for inflammatory diseases of the lower urinary tract, urinary calculi and kidney gravel. (German Commission E.) ESCOP also indicates its use as an adjuvant in the treatment of bacterial infections of the urinary tract.

Anti-inflammatory activity is due to phenolic glycosides; antifungal activity is due to saponins based on polygalic acid (acts specifically against the candida fungus, the cause of vaginal and oral thrush). As a diuretic, aerial parts are used for nephritis and cystitis and to flush out kidney and bladder stones; urine volume is increased but not sodium excretion.

The plant contains quercitrin, rutin, iso-quercitrin, astragalin, kaempfer- ol, rhamnoglucoside, quercetin, caffeic acid and chlorogenic acid. Aerial parts contain diterpenoids of cis-clerodane lactone group.... solidago virga-aurea

Ait.

Habitat: The temperate regions of northern hemisphere; introduced in Jammu and Kashmir for cultivation.

English: American Hellbore, Green Hellebore.

Action: Rhizomes and roots— cardiac depressant, hypotensive. (Contraindicated in cardiac disease. Large doses cause bradycardia.) Used in the treatment of convulsions, headache, neuralgia, inflammatory affections of respiratory tract; and as sedative. Formerly used for high blood pressure, especially associated with toxemia of pregnancy.

Ceveratrum-type alkaloids, found as esters, are hypotensive and cause vasodilatation (probably by inhibition of vasomotor centre and stimulation of the vagus). Overdoses cause vomiting. Alkaloids are teratogenic.... veratrum viride

Blume.

Family: Caprifoliaceae.

Habitat: The Himalayas from Punjab and Bhutan at altitudes of 1,200-2,500 m, also in the Nilgiris.

Ayurvedic: Tilvaka (related species).

Folk: Kaalaa Titmuliyaa, Tita, Karwaa (Kumaon).

Action: The root and stem bark— antispasmodic, uterine sedative.

Ethanolic extract of the aerial parts shows antiprotozoal activity against Entamoeba hystolytica.

The root and stem bark (also of V. foetidum) possess distinct odour of the root of valerian. The extracts of root and stem bark exhibited antispas- modic activity and were comparable with those of the bark of V. opulus var. americanum and V. prunifolium.

Laal Titmuliyaa (Kumaon) is equated with Viburnum mullaha Buch-Ham. ex D. Don syn. V. stellulatum Wall ex DC.... viburnum coriaceum

D. Don.

Family: Caprifoliaceae.

Habitat: The Himalayas from Kashmir to Bhutan at altitudes of 1,200-3,300 m.

Folk: Richh, Richhabi, Khimor (Punjab), Gwiaa, Ghinwaa, Guyaa, Ghenu (Kumaon).

Action: Bark—used in menorrhagia and metrorrhagia.... viburnum cotinifolium

Wall.

Family: Caprifoliaceae.

Habitat: Khasi hills at altitudes of 900-1,800 m.

Folk: Narwel (Maharashtra).

Action: Leaves—astringent, antispasmodic. Juice used in menorrhagia and as a sedative (a substitute for American Viburnum bark) in uterine disorders, and in post-partum haemorrhage. See Viburnum coriaceum and V. opulus.... viburnum foetidum

Hook. f. & Thoms.

Synonym: V. grandiflorum Wall. ex DC.

Family: Caprifoliaceae.

Habitat: The Himalayas from Kashmir to Sikkim at altitudes of 3,000-4,000 m.

Ayurvedic: Tilvaka.

Folk: Telam, Timoi (Kumaon), Tilen, Thelkaa (Garhwal).

Action: Bark—astringent; contain 13.1% tannin on dry basis.... viburnum nervosum

(Latin) Victorious woman; winner; conqueror

Victoriah, Victorea, Victoreah, Victorya, Victorria, Victoriya, Vyctoria, Victorine, Victoreana, Victoriana, Victorina, Victoryna, Victoreena, Viktoria, Vicktoria, Viktorina, Vyctoria, Vyktoria, Vyctorina, Vyktorina, Vyctoryna, Vyktoryna, Victoryn, Vyctorine, Vyctoryn, Vyktorine, Vyktoryn, Vyktoryne, Vitoria, Vicki, Vickie, Vicky, Vickey, Vikki, Vicka, Vika, Victriv, Victriva... victoria

(Latin / Hebrew) Life / one who is dearly loved

Vidah, Veeda, Vieda, Vyda, Vidett, Vidette, Videtta, Videte, Videta, Videlle, Vidella, Videll, Videle, Videla... vida

(Latin) Of the vine branch Vidoniah, Vidonya, Vydonia, Vydonya, Vedonia... vidonia

Linn. var. americanum (Mill.) Ait.

Family: Caprifoliaceae.

Habitat: Native to North America. Dried bark imported into India.

English: Cranberry Bush, Cramp- bark.

Action: Used as a diuretic and as a uterine sedative in functional uterine disorders.

The activity of the bark has been attributed to the presence of uterine relaxants, acting directly on the muscle and not through sympathomimetic action. The muscle relaxants include an essential oil, an amorphous, bitter phenolic glucoside, esculetin and scopo- letin.

The bark contains hydroquinones, arbutin, methylarbutin and traces of hydroquinone; coumarins including scopoletin and scopoline; tannins mainly catechins.

The polycondensed tannins produced significant angioprotective effect in rats.... viburnum opulus

Linn.

Habitat: Native to eastern and central USA. (Experimental cultivation in the Nilgiri hills.)

English: Black Haw.

Ayurvedic: Tilvaka (related species).

Action: Uterine sedative (used in the treatment for threatened miscarriage, under strict medical supervision. Spasmolytic. (The British Herbal Pharmacopoeia.) Used after childbirth to check bleeding and pain, also in dysmen- orrhoea.

The stem and root bark gave couma- rins including scopoletin, aesculetin and scoplin; a biflavone, amentofla- vone; triterpenes including oleanolic and ursolic acid and their acetates, caffeic acid derivatives; salicylic acid, salicin, arbutin (traces); tannins (2%).

Coumarin, scopoletin, is a uterine sedative, while salicin is an analgesic.... viburnum prunifolium

Linn.

Family: Papilionaceae; Fabaceae.

Habitat: Native to North Africa; commonly grown in North Western India.

English: Broad bean, Windsor bean.

Unani: Baaqlaa.

Action: Fresh beans—cooked alone or with meat, are prescribed in Unani medicine for cough, also for resolving inflammations. Externally, the bean and flowers are used as a poultice for inflammations, warts and burns.

A number of harmful principles are reported in the broad beans. A large amount of Dopa, mainly in free state and partly in the form of its beta- glucoside; and gluco alkaloids, vicine and convicine, have been isolated.

Ingestion of fresh, uncooked or partially cooked beans is not recommended.

The seeds gave positive test for hydrocyanic acid and also contain arsenic.

The fresh beans exhibit an oestro- genic activity. Phytoalexins of the immature seeds exhibit antifungal activity.

Malic, citric and glyceric acids are the principal organic acids present in the pods (also present in the hulls). The glyceric acid on subcutaneous injection produced a marked diuresis in rabbit. (A decoction of the leaves and stems of the field bean, Faba vulgaris Moench, is used as a diuretic.)

An aqueous extract of the root nodules exhibited vasoconstricting activity on rabbits.... vicia faba

DC.

Synonym: V. auriculata Cass.

Family: Compositae; Asteraceae.

Habitat: Throughout the drier parts of India, ascending to an altitude of about 1,800 m in the Himalayas.

Ayurvedic: Vandhyaavari.

Siddha/Tamil: Jimikipoo, Mookuti, Poondu.

Action: Plant—used for contraception.

Aerial parts contain the sesquiter- pene lactones (vicolide A-D), the 28- nortriterpenoidal glucosides (vicoside A and B), the triterpenoid vicosigenin and monoterpenediol vicodiol, besides several n-alkanes and n-alkanoic acid esters.

Vicolide A-D showed anti-inflammatory activity against cotton pellet granuloma in rats. Vicolide D showed antipyretic activity.

Antifertility activity has been attributed to the presence of vicolide B and D, while A and C have been reported to be devoid of antifertility activity. Vicolide D was found to be anti-oestrogenic in nature.... vicoa indica

(Indian) Having great wisdom Vidyah... vidya

(Latin) From the wine country; from Vienna

Vienne, Vienette, Vienetta, Venia, Venna, Vena, Vennia... vienna

(Spanish) A lively woman Vierah, Vierra, Vierrah, Vyera, Vyerah, Vyerra, Vyerrah... viera

(Vietnamese) A woman from Vietnam Vyet, Viett, Vyett, Viette, Vyette... viet

(Scandinavian) A goddess of war Vigdiss, Vigdisse, Vigdys, Vigdyss... vigdis

(Latin) Wakefulness; watchfulness Vigiliah, Vygilia, Vygylia, Vijilia, Vyjilia... vigilia

(French) From the little vine Vignete, Vignet, Vignetta, Vignett, Vigneta, Vygnette, Vygnete, Vygnet, Vygnett, Vygneta, Vygnetta... vignette

(Scottish) From the creek Vikah, Veeka, Veecka, Vicka, Vicca... vika

(Swedish) Form of Wilhemina, meaning “determined protector” Vilhelminah, Vylhelmina, Vylhelmyna, Vilhelmine, Villemina, Vilhelmine, Vilhemine, Vilhemina, Villamena, Villene, Villette, Villa, Vimene, Vimine, Vilhelmeena, Villiamina, Vilma, Vilmetta, Vilmanie, Vilmayra, Vylma, Villiemae, Vilmet, Vilna... vilhelmina

(Hindi) One who is dedicated Vilinah, Vileena, Vileana, Vylina, Vyleena, Vyleana, Vylyna, Vilinia, Vilinya... vilina

Lindl.

Synonym: V amazonica Sow.

Family: Nymphaeaceae.

Habitat: Native to South America; grown in pools in botanic gardens.

English: Royal Waterlily. Water Maize (seeds).

Ayurvedic: Brihat-patra Kamal.

Action: Seed—refrigerant, cooling to the nervous system. Pond Lily root—externally, astringent, antiscrofulous. An infusion is used as a gargle for ulcers in the mouth and throat.

The leaves contain the anthocyanins, delphinidin and cyanidin.... victoria regia

(French) From the country estate Villettah, Vileta, Villeta, Viletta, Vyleta, Vylletta, Vylleta, Vyletta, Vileta... villetta

(French) From the small village Vilette, Villete, Vilete, Vilet, Vilett, Villet, Villett, Vylet, Vylete, Vylett, Vylette, Vyllet, Vyllete, Vyllette... villette

(Greek) Protector from the sea Vilmarise, Vilmarice, Vilmarisa, Vilmarissa, Vilmarisia, Vilmariss, Vilmarys, Vilmaryss... vilmaris

(Indian) Feminine form of Vamal; clean and pure Vimalah, Vimalia, Vimalla... vimala

(Spanish / Hindi) From the vineyard / in mythology, the musical instrument of the goddess of wisdom Vinah, Veena, Vinna, Vyna, Vynna, Vinesha, Vinisha, Vinita, Viniece, Vinora, Vinique... vina

White vinegar; sometimes used as a gargle for treating sore throat and tonsillitis, combined with bicarbonato de sodio(baking soda); it is said to have a drying effect on the tonsils when used this way; vinegar is also used as a douche for treating vaginal infections, urogenital inflammation and menstrual disorders.... vinagre blanco

(Hindi) In Hinduism, the daughter of Daksha, wife of Kasyapa, and mother of Garuda Vinatah... vinata

(Hindi) One with discipline; good behavior Vinayah... vinaya

(Linn.) Pich.

Synonym: V pubescens Urv.

Family: Apocynaceae.

Habitat: Native to Europe. Found in the Himalayas, West Bengal and Palni Hills.

English: Green Periwinkle, Greater Periwinkle.

Action: Astringent, antihaemor- rhagic, hypotensive. Used to treat menorrhagia and leucorrhoea.

The herb contains indole alkaloids; majdine, isomajdine, majoridine, aku- ammine, akuammigine, carpanaubine, irvine, reserpine, serpentine, sarpagi- ne, tetrahydroalstonine, vincamajine and vincamajoreine; and tannins.

The cytotoxic dimeric alkaloids present in Vinca rosea L., used in the treatment of certain types of cancer, have not been found in Vinca major.... vinca major

An ulcerative in?ammation of the throat, often foul-smelling, and caused by large, spindle-shaped bacilli (fusobacterium) and spirilla.... vincent’s angina

(Latin) Feminine form of Vincent; conquerer; triumphant Vincentiah, Vincenta, Vincensia, Vincenzia, Vyncentia, Vyncyntia, Vyncenzia, Vycenzya, Vincenza, Vicenta, Vincensa, Vincentina, Vincentena, Vicentah, Vicynta, Viecinta, Vycenta, Viecynta, Visenta, Visynta, Vysenta... vincentia

Trench Mouth or NUGS. It is usually a symptom of extreme physical stress, nutritional deficiencies and heavy metal poisoning (but not of the type accrued from excess exposure to Metallica or Scorpion)... vincents infection

(Spanish) One who is forthright Vinciah, Vyncia, Vynciah, Vincea, Vinceah, Vyncea, Vynceah... vincia

Acetic acid (4-6%) - this totally de-activates the nematocysts of all cubozoans (box-jellyfish) tested to date. Despite popular misconception it has no effect on the venom injected and does not help pain.... vinegar

(Latin) Wine Viniah, Vynia, Vynya... vinia

An inhalational anaesthetic used in minor surgical procedures of short duration, and for the induction of ANAESTHESIA for longer surgical operations.... vinyl ether

Linn.

Family: Apocynaceae.

Habitat: Grown in Indian gardens as an ornamental.

English: Lesser Periwinkle.

Action: Astringent and circulatory stimulant (contain alkaloid vin- camine). Used for gastric catarrh, chronic dyspepsia; restlessness, headache, dizziness, and for the prevention of premature aging of brain cells, as a geriatic support.

The herb contains indole alkaloids (0.15-1.4%). The major constituent in vincamine; others include vinic, apovincamine, vincadifformin.

Vincamine is hypotensive; increases blood flow and oxygen supply to the brain. The vincamine content in the herb is low and fluctuates greatly. Overdose of the extract brings about a severe drop in blood pressure.

Vincamine, as a pure substance is available for therapeutic administration.... vinca minor

Murr.

Synonym: Catharanthus pusillus G. Don.

Lochnera pusilla (Murr.) K. Schum.

Family: Apocynaceae.

Habitat: West Bengal and throughout greater part of India, as a weed.

Ayurvedic: Sangkhi, Sangkhaphuli (The Wealth of India).

Folk: Milagaipoondu (Tamil Nadu), Kapavila (Kerala), Vishakane- gale (Karnataka), Neru (Andhra Pradesh) Mirchaai (Bihar).

Action: Plant—oncolytic (tumour- resolving). A decoction of the dried plant boiled in oil is used in the treatment of lumbago.

The plant contains ajmalicine, rau- wolscine, vindoline, pusiline and pusi- linine, while leurosine, lochnerinine, venoterpine, vindorosine and vincapu- sine have been isolated from the leaves. The root gave lochnericine. Leurosine is cytotoxic. Pusiline and pusilinine cause marked depression of the heart.... vinca pusilla

Linn.

Synonym: Catharanthus roseus (Linn.) G.Don.

Family: Apocynaceae.

Habitat: Native of West Indies; commonly grown in Indian gardens.

English: Madagascar Periwinkle.

Ayurvedic: Sadaapushpaa, Sadam- pushpa, Nityakalyaani, Sadaaba- haar.

Siddha: Nithiya kalyani, Sudukadu mallikai.

Action: Cytotoxic.

Over one hundred monomeric and bisindole alkaloids have been isolated.

The indole alkaloid, vincamine, is a vasodilator; the bisindole alkaloids vinblastine and vincristine proved to be highly effective as cancer chemothera- peutic agents.

Vinblastine and vincristine are clinically used in a number of thrombo- cytopenic disorders, such as refractory idiopathic thrombocytopenic purpurea and haemolytic anaemia.

Vinblastine in combination with other chemotherapeutic agents (cis- platin and bleomycin) is used for the treatment of metastatic testicular cancer; also against bladder cancer, breast cancer, non-small cell lung cancer and Hodgkin's lymphoma in combination with other drugs.

Vincristine, in various combinations, is highly effective in acute leukemia in children and lymphocytic leukemia; and pediatric tumours. (The Treatise on Indian Medicinal Plants.)... vinca rosea

(Italian) A stringed instrument; a form of Violet, meaning “resembling the purplish-blue flower” Violah, Viole, Vyola, Violanie, Violani, Violaney, Violany, Violaine, Violaina, Violanta, Violante, Violeine, Vyoila, Vyolani, Vyolanie, Vyolania, Vyolanya, Violanth, Violanthe, Violantha... viola

Linn.

Family: Violaceae.

Habitat: The temperate Himalayas from Kashmir to Sikkim at altitudes of 1,800-3,000 m.

Unani: Banafashaa (related species).

Action: Leaves—laxative, emollient. Flowers—antiseptic, pectoral, diaphoretic. Root—emetic.

The herb is used as a substitute for Banafashaa obtained from V. odorata.

The leaves are used for treating skin eruptions and the flowers for skin irritation.... viola biflora

Linn.

Family: Violaceae.

Habitat: Native to Europe; cultivated in Kashmir.

English: Sweet Violet.

Unani: Banafashaa, Banafsaj, Kakosh, Fareer.... viola odorata

Ging.

Family: Violaceae.

Habitat: The Himalayas, Eastern and Western Ghats.

Unani: Banafashaa (related species).

Action: Dried flowers—used for coughs and colds. Herb— bruised and applied to ulcers; also prescribed in syphilis and scrofula. (In Chinese medicine, recommended against cancerous growths.)... viola patrinii

Blume.

Family: Violaceae.

Habitat: Kashmir to Sikkim and Nilgiri hills at 1,500-2,100 m.

Unani: Banafashaa (related species)

Folk: Thungtu (Kumaon).

Action: Uses same as those of V odorata. A medicinal oil of Unani medicine, Roghan-e-Banafashaa, is prepared from the plant. Flowers, as tea, are used for treating headache.

Active principle of the herb is an alkaloid, violine.... viola pilosa

Boiss. var. stocksii (Boiss.) W. Beck.

Synonym: V. stocksii Boiss.

Family: Violaceae.

Habitat: Punjab, Western Rajasthan, Gujarat.

Unani: Banafashaa (related species).

Folk: Jinkobanafashaa (Gujarat).

Action: Root—emetic. Used as a substitute and adulterant of ipecac. The herb is sold in the market as

Action: Expectorant, anti- inflammatory, diaphoretic, antipyretic, diuretic. Used for catarrhal and pulmonary affections, also for diseases of liver and intestines.

Included among unapproved herbs by German Commission E, but it has been mentioned that the traditional use of sweet violet root as an expectorant for the respiratory tract is well documented.

The British Herbal Pharmacopoeia recognizes expectorant activity of the leaf.

The flowers (var. maxima) are a source of rutoside. The flowers also contain anthocyanin, violanin chloride, which on hydrolysis yields glucose, delphinidin, rhamnose and p- coumaric acid. High content of tocopherol is also reported from flowers.

Dried flowers contain anthocyanin 4.0, total flavonoids 1.1, rutoside 0.4, mucilage 18, and ash 8.5%.

The leaves contain friedelin and beta-sitosterol.

The essential oil from the entire plant consists of methyl salicylate. A di- C-glycoside, violanthin, has been reported from the plant.... viola cinerea

Lam. (in part)

Family: Violaceae.

Habitat: Kashmir at 1,200-2,400 m.

English: Pale Wood Violet, Wood Violet.

Unani: Banafashaa (related species).

Action: Plant—pectoral, bechic; used in chest troubles. Stem, leaf and flower—applied to foul sores and wounds.

Habitat: Native to Europe; grown as an ornamental.

English: Heartsease, Wild Pansy.

Unani: Banafashaa (related species).

Action: Herb—anti-inflammatory, antiallergic, expectorant, diuretic, antirheumatic, alterative. Used for bronchitis, rheumatism, chronic skin disorders and for preventing capillary haemorrhage when under corticosteroid therapy. Root— antidysenteric; used as a substitute for Cephaelis ipecacuanha.

Key application: Externally in mild seborrheic skin diseases and milk scall in children. (German Commission E.) The British Herbal Pharmacopoeia recognizes the herb as an expectorant and dermatological agent.

The herb contains rutin, violin and salicylic acid. The flower contains rutin, quercetin, violanthin (6,8-digly- coside of apigenin), violaxanthin, p- hydroxycinnamic acid and delphini- din. A flavone C-glycoside-saponarin has also been obtained from flowers. Flowers, in addition, contain 15-cis- violaxanthin.

The herb exhibits anticoagulant property and diminishes the aggregation of platelets. It can be used as a preventive measure against thrombosis.

Habitat: Temperate Himalayas from Kashmir to Nepal between 1,200 and 2,700 m (a semiparasitic plant).

English: European Mistletoe.

Ayurvedic: Bandaaka, Suvarna- bandaaka. Vrikshaadani (substitute).

Unani: Kishmish Kaabuli.

Action: Vasodilator, cardiac depressant, tranquiliser, stimulates the vagus nerve which slows the pulse, anti-inflammatory, diuretic, immune enhancer, antineoplas- tic. Used for hypertension and tachycardia, as a nervine tonic.

The extract of leafy twigs is anti- inflammatory exerting an action upon capillary permeability and oedema. It stimulates granulation and the neoformation of connective tissue.

Key application: For treating degenerative inflammation of the joints by stimulating cuti- visceral reflexes following local inflammation brought about by intradermal injections; as palliative therapy for malignant tumour through non-specific stimulation. (German Commission E.)

Mistletoe contains glycoproteins; flavonoids, usually quercetin-derived (dependent on host tree to some extent); polypeptides; phenylcarboxylic acids; polysaccharides (including viscid acid); alkaloids; lignans.

Cardiotonic activity is due to the lig- nans. The polysaccharides stimulate the immune response. Antineoplas- tic activity is claimed to be responsible for prolongation of survival time in cancer patients. Polypeptides (visco- toxins) inhibit tumours and stimulate immune resistance. (For uses of lectin from Mistletoe in cancer, see Eur J cancer, 2001, Jan, 37(1), 23-31; Eur J Cancer 2001, 37 (15), 19101920.) (For application in hepatitis, see Fitoterapia, 70, 2001.)... viola sylvestris

(Indian) One who is brave and noble

Virendrah, Vyrendrah, Virindra, Virendria... virendra

(Latin) A staff-bearer Virgiliah, Virgillia, Virgilya, Virgilea, Virgileah, Virjilia, Virjillia, Virjilya, Virjilea, Virjileah, Vyrgilia, Vyrgylya, Virgily, Virgiley, Virgilie, Virgili, Virgilee, Virgileigh... virgilia

(Latin) One who is chaste; virginal; from the state of Virginia Virginiah, Virginnia, Virgenya, Virgenia, Virgeenia, Virgeena, Virgene, Virgena, Virgine, Verginia, Verginya, Virjeana, Virjinea, Virjinia, Vyrjinia, Vyrginia, Vyrgynia, Vyrgynya, Virgenie... virginia

(Latin) The virgin; a constellation; the sixth sign of the zodiac... virgo

(Latin) Youthful and blooming; green; innocent

Viridiss, Viridys, Viridyss, Vyridis, Vyridys, Vyrydys, Virdis, Viridissa, Viridia, Viridianai, Viridiani, Viridiana... viridis

(Hindi) One who is brave Virikah, Viricka, Virica, Vyrika, Vyricka, Vyrica, Vyryka, Viricca... virika

The masculinisation of women suffering from excessive production of the male hormone ANDROGEN. The person develops temporal balding, a male body shape, increased muscular bulk, deepening of the voice, an enlarged CLITORIS and HIRSUTISM. Virilisation may also occur in women who take synthetic androgens, a practice sometimes used (illegally) to increase physical strength and endurance in sport.... virilisation

See HOSPITAL.... virtual hospital

(Latin) Having moral excellence, chastity, and goodness Virtu, Vyrtue, Vyrtu, Vertue, Vertu... virtue

The end results of heavy infection and migration of larva of Toxocara spp (especially T. canis - the dog Ascarid) in the viscera, producing a granulomatous reaction and pathology at the site.... visceral larva migrans

A protozoan disease caused by Leishmania donovani, found around parts of the Mediterranean basin, tropical Africa, South America, and central and eastern Asia. The disease is transmitted byfemale sandflies of the genus, Phlebotomus in the Old World and Lutzomyia in the New World. Full-blown disease is often fatal, if untreated. Growth nodules of the disease or leishmanioma form initially and, if spontaneous recoverydoes not occur, proliferating parasites burst out of the nodules, disseminating throughout the body.... visceral leishmaniasis (kala azar)

Abnormal enlargement of the viscera... visceromegaly

Willd.

Family: Viscaceae; Loranthaceae.

Habitat: Bihar, West Bengal and Kerala. (The plant parasitizing Strychnos nux-vomica tree are used in Indian medicine.)

Folk: Baandaa.

Action: Used as a substitute for nux-vomica. Poultice of leaves is used for neuralgia; ashes of the plant for the treatment of skin diseases.... viscum orientale

Burm.

Family: Viscaceae, Loranthaceae.

Habitat: Most parts of India; a superparasite in Western India on Loranthus sp. which itself is parasitic on Eugenia sp.

Ayurvedic: Bandaak (related species); Jivantikaa, Kaamavriksha, Nilavalli. (The Wealth of India.)

Folk: Panapuuduu (Maharashtra), Bodobaando (Gujarat).

Action: Plant—febrifuge, aphrodisiac. Paste is applied to bone fractures.

The plant gave oleanolic acid, ceryl oleanolate and meso-inositol.... viscum articulatum

Roxb. ex DC.

Family: Viscaceae; Laoranthaceae.

Habitat: Sikkim, a parasite of Strychnos nux-vomica tree.

Ayurvedic: Katukavalli, Pashu- mohanikaa.

Siddha/Tamil: Pulluri, Pullurivi.

Folk: Kuchleikaa-malang, Kuchle- kaa-baandaa.

Action: Properties more or less similar to Strychnos nux-vomica. Used as a substitute for strychnine and brucine. (The plant is also parasitic on Albizia amara, A. odoratissima, Pongamia pin- nata and Ziziplus oenoplia.)... viscum monoicum

Through volunteers or community workers, a service providing companionship and support for older people who may be lonely and isolated.... visiting service / visitor programme

(African) Longings are as waterfalls Visolah, Visolaa, Visolae, Visolai, Visolia, Visolla... visola

Stimulation of the retina of the EYE with light causes changes in the electrical activity of the cerebral cortex (see BRAIN). These changes can be measured from outside the skull and can give valuable information about the state of the visual pathway from the retinal ganglion cells to the occipital cortex. Not only can it determine that function is normal, it can also help to diagnose some causes of poor VISION.... visual evoked response

(Latin) Feminine form of Vitus; life Vitah, Vitta, Veeta, Veetta, Vyta, Vytta, Vitia, Vitella, Vitka, Vitalina, Vitaliana... vita

When the eye looks at a speci?c point or object, that point is seen clearly. Other objects within a large area away from this ?xation point can also be seen, but less clearly. The area that can be seen around the ?xation point, without moving the eye, is known as the ?eld of vision. The extent of the ?eld is limited inwards by the nose, above by the brow and below by the cheek. The visual ?eld thus has its greatest extent outwards from the side of the head. The ?eld of vision of each eye overlaps to a large extent so that objects in the centre and towards the inner part of each ?eld are viewed by both eyes together. Because the eyes are set slightly apart, each eye sees objects in this overlapping part of the ?eld slightly di?erently. It is because of this slight di?erence that objects can be perceived as three-dimensional.

Defects in the visual ?eld (scotomas) can be produced by a variety of disorders. Certain of these produce speci?c ?eld defects. For example, GLAUCOMA, some types of brain damage and some TOXINS can produce speci?c defects in the visual ?eld. This type of ?eld defect may be very useful in diagnosing a particular disorder. The blind spot is that part of the visual ?eld corresponding to the optic disc. There are no rods nor cones on the optic disc and therefore no light perception from this area. The blind spot can be found temporal (i.e. on the outer side) of the ?xation point. (See also EYE.)... vision, field of

Groups of neurons (see NEURON(E)), usually sited in the HYPOTHALAMUS and the BRAIN stem, that are the control centres for various essential body functions. Examples are: blood pressure, breathing, heart rate and temperature control. The centres are part of the body’s re?ex adjustments to the outside world and its internal environment and are essential in maintaining HOMEOSTASIS.... vital centres

The glands which provide substances for the development of the egg and the formation of the shell in trematodes and cestodes.... vitelline glands

Linn.

Family: Verbenaceae.

Habitat: Mediterranean region; South-West Asian countries, up to Pakistan. (Seeds are imported from Iran.)

English: Monk's Pepper-tree, Hemp tree.

Ayurvedic: Renukaa (seed). Renukaa and Harenukaa are synonyms in Indian medicine.

Unani: Sambhaalu.

Action: Dried ripe fruit—acts on the anterior pituitary gland, reducing FSH and increasing LSH; stimulates production of progesterone by reducing oestrogen; used as a substitution therapy in primary and secondary corpus luteum deficiency. Used for premenstrual syndrome, for regulating hormones in amenorrhoea and for bleeding between periods; also as a galactagogue and to assist bust development.

The herb is also used in the treatment of premature old age due to sexual excess, nervous debility and impotence (as a homoeopathic drug). Vitex agnus extract is found to lower prolactin levels in men (the decrease in prolactin levels results in improved sexual performance. Males with hyperprolacti- naemia frequently face impotence).

Key application: In irregularities of menstrual cycle, premenstrual complaints, mastodynia. (German Commission E.) As a hormonal modulator. (The British Herbal Pharmacopoeia.)

The methanolic extract of the flowering stems of Vitex agnus-castus yielded iridoids, angnucastoside-A, B and C, in addition to aucubin, agnuside, mussaenosidic acid and 6'-O-p-hy- droxybenzoylmussaenosidic acid, and phenylbutenone glucoside, myzoden- drone.

Dopaminergic compounds, present in the herb, are clinically important compounds which improve premenstrual mastodynia and other symptoms of premenstrual syndrome.

The herb may counteract birth control pills. (Sharon M. Herr.)... vitex agnus-castus

Linn. f.

Family: Verbenaceae.

Habitat: Throughout Deccan Peninsula.

Ayurvedic: Paaraavata-padi, Kaakajanghaa. (Kaakajanghaa is also equated with Leea aequata Linn.)

Action: Roots—febrifuge, astringent.

Ethanolic extract and cold aqueous infusion of the leaf were found to suppress acetic acid-induced writhing in mice and carrageenan-induced hind paw oedema in rats. The flavonoids exhibited anti-inflammatory activity.... vitex leucoxylon

Linn.

Family: Verbenaceae.

Habitat: Throughout India in the warmer zones; ascending to 900 m in the North-western Himalaya.

English: Five-leaved Chaste tree.

Ayurvedic: Nirgundi, Shephaa- likaa, Sindhuka, Sindhuvaara, Suvahaa, Sugandhikaa. Nila, Nila- nirgundi, Shveta nirgundi (var.). White-flowered var. is known as Sinduvaara, blue-flowered as Nirgundi or Shephaali,

Unani: Sambhaalu, Fanjankisht.

Siddha/Tamil: Nochi, Nalla Nochi, Vellai Nochchi, Nirkundi.

Action: Seeds—prescribed in spermatorrhoea, and for promoting spermiogenesis (in Unani medicine). Also given as a rejuvenating tonic for retarding old age and for retaining and promoting virility. (in Ayurvedic medicine). Leaf—anti-inflammatory, analgesic; removes foetid discharges and worms from ulcers. Flowers—astringent, febrifuge, antidiarrhoeic; prescribed in liver complaint. Oil— applied to sinus, scrofulous sores.

The Ayurvedic Pharmacopoeia of India recommends the leaf (also the root) in excessive vaginal discharges, oedema, skin diseases, pruritus, helmin- thiasis, rheumatism, and puerperal fever.

A water extract of the leaves, when administered to rats, exhibited anti- inflammatory, analgesic, antihistami- nic and membrane stabilizing and an- tioxidant activities. (J. Ethnopharmo- col, 2003, (203), 199-206.) Methano- lic extract of leaves showed remarkable antihistaminic activity.

The leaves contain iridoid glyco- sides, isomeric flavanones and flavo- noids, besides casticin and the gluco- sides, luteolin-7-glucoside and alpha- D-glucoside of a tetrahydroxy mono- methoxy flavone.

Dried powder of roots contains hen- triacontane, beta-sitosterol and its aetat and stigmasterol. Alcoholic extract of the root showed 40-60% antiimplantation activity with no anti- ovulatory effect in rats.

Flavone vitexicarpin (1), isolated from the leaves, exhibited broad cyto- toxicity in human cancer cell line panel. Two pentacyclic triterpenoids, betulin- ic acid and ursolic acid, along with an aliphatic alcohol, n-hentriacontanol, beta-sitosterol and p-hydroxybenzoic acid have been isolated from leaves.

The seeds contain p-hydroxybenz- oic acid, 5-oxyisophthalic acid, glucose and the triterpene, vitextriter- pene. Several anti-inflammatory triter- penoids and flavonoids have also been isolated from the seeds. The flavanone, 5,7,3' trihydroxy-6, 8,4'-trimethoxy- flavone exhibited anti-androgenic activity in adult mice and dogs.

Dosage: Leaf—10-15 ml juice (API, Vol. III); root—10-12 ml juice (API, Vol. IV.)... vitex negundo

Wall. ex Schauer.

Family: Verbenaceae.

Habitat: Assam, West Bengal, Bihar and South India.

Ayurvedic: Kaakajanghaa. (Leea aequata Linn. is also equated with Kaakajanghaa.)

Folk: Chirai-godaa, Chirai-gorwaa, Naagpheni.

Action: Leaves and bark—used in malarial and black water fevers. Leaves—antibacterial.

The leaves and root bark gave pachy- podol, ursolic acid, vitexin and pedun- cularcin.... vitex peduncularis

Linn.

Family: Verbenaceae.

Habitat: Throughout India in tropical and subtropical regions.

Ayurvedic: Sinduvaara, Nirgundi (white var.).

Siddha/Tamil: Karu Nochi, Siru Nochi.

Folk: Paani-Sambhaalu.

Action: Leaves—febrifuge, antibacterial, anthelmintic, cytotoxic. Extract of the leaves showed inhibitory action against Mycobac- terium tuberculosis. Leaves used as poultice in rheumatism, inflammations and sprains. Root and flowers—febrifuge. Root—expectorant. Fruit—used in amenorrhoea.

Aerial parts gave friedelin, beta- sitosterol and itsbeta-D-glucoside, and a long chain hydrocarbon. The leaves gave the flavonoids—artemetin, lute- olin, orientin, casticin; and iridoid gly- cosides, aucubin and agnuside. The fruits contain an alkaloid, vitricin.

Vitrosin A and vitexicarpin, isolated from the plant, blocked spontaneous contraction of isolated guinea-pig trachea induced by histamine. (Planta Med, 2002, Nov., 68/11).

The leaves are reported to improve memory and favour hair growth. Leaf extract showed significant antitumour activity in the murine tumour system.... vitex trifolia

A semi-?uid, transparent substance which ?lls most of the globe of the EYE behind the lens.... vitreous body

(German) Little woman of the strong fortress

Vivekah, Vivecka, Vyveka, Viveca, Vyveca, Vivecca, Vivika, Vivieka, Vivyka... viveka

(Latin) One who is full of life; vibrant Viviane, Vivianne, Viviann, Vivien, Viviene, Vivienne, Vivienn, Vivyan, Vivyann, Vivyanne, Vyvian, Vyviann, Vyvianne, Vyviane, Vyvyan, Vyvyann, Vyvyanne, Vyvyane, Viviana, Vivianna, Vivyana, Vyvyana, Vivina, Vivia, Viveca, Vivion, Viva, Vivan, Vyva, Vive, Vyv, Viv, Vivi, Vevey, Vevay, Vivie, Vivee... vivian

(American) A flirtatious woman Vixin, Vixi, Vixie, Vixee, Vixea, Vixeah, Vixy, Vixey... vixen

Linn.

Family: Vitaceae.

Habitat: A woody, shrubby vine, cultivated in Punjab, Rajasthan, Delhi, Uttar Pradesh Maharashtra, Karnataka, Andhra Pradesh and Tamil Nadu for edible fruits.

English: Wine Grape, European Grape. (Chinese: P'u-t'ao.)

Ayurvedic: Draakshaa, Go-stani, Mrdvikaa. Dehydrated fruit— Daakh, Munnakaa, Kishmish.

Unani: Angoor. Dehydrated fruit—Daakh, Maweez, Zabeeb, Munaqqaa, Kishmish.

Siddha: Draksha.

Action: Dried fruits, seedless— nourishing and invigorating. Used in prescriptions for cough, respiratory tract catarrh, subacute cases of enlarged liver and spleen; and in alcohol-based tonics (Aasavs).

The Ayurvedic Pharmacopoeia ofIn- dia recommends dried mature fruits (5-10 g) in anaemia, jaundice, dyspepsia, constipation, haemorrhagic diseases, gout, cough, dyspnoea, and alcoholism.

Grape vine contains flavonoids, tannins, tartrates, inositol, carotenes, cho- line and sugars. The fruit contains tar- taric and malic acids, sugars, pectin, tannin, flavone glycosides, vitamins A, B1, B2, C and minerals; anthocyanins in red leaves and red grapes. Antho- cyanins reduce capillary permeability. Red leaves are astringent and anti- inflammatory; an infusion is used for diarrhoea, heavy menstrual bleeding and uterine haemorrhage; also in the treatment of varicose veins and haemorrhoids.

Oligomeric proanthocyanidin extract of the seed is used in atherosclerosis due to its free radical scavenging ability, also in venous insufficiency, night vision, oedema due to injury and post surgery oedema.

Proanthocyanidin extract decreased hepatotoxicity of acetaminophen in mice. Grape polyphenols, extracted from skin and seeds decreased hepatic injury from alcohol, but had no effect on ethanol-induced lipid changes in rats. (Sharon M. Herr.)

Dosage: Dried mature fruits—5-10 g. (API, Vol. III.)... vitis vinifera

Herbs that contain Vitamin C or stimulate its metabolism in the body. Vitamin C has a broad spectrum viricidal action which is often overlooked for acute infectious diseases.

Aloe Vera, Balm, Boneset, Burdock, Echinacea, Elderflowers, Elecampane, Eucalyptus, Garlic, Goldenseal, Liquorice, Marjoram, Pulsatilla, Queen’s Delight, St John’s Wort, Thuja, Wild Indigo, Yarrow. ... anti-virals

Parts: Bruised Cayenne pods 1; Cider Vinegar 20. Macerate for one month and filter. A hot stimulating condiment for use at table. 5-10 drops in tea or beverage for winter’s colds and chills. ... chillie vinegar

Quaiacum officinale. ... lignum vitae

See visual acuity.... acuity, visual

A virus that causes infectious mononucleosis; the virus is also associated with Burkitt’s lymphoma and cancer of the nasopharynx (see nasopharynx, cancer of).... epstein–barr virus

Pain and numbness in the hand and arm due to prolonged use of vibrating tools. Symptoms often also include blue or white coloration of the fingers and a tingling sensation in affected areas. Hand–arm vibration syndrome tends to develop slowly over years and is the result of repeated damage to blood vessels and nerves. Exposure to cold tends to aggravate the condition. There is no specific treatment, but avoiding vibrating tools is essential to prevent the disease progressing. In some cases, calcium channel blockers may help relieve some symptoms.... hand–arm vibration syndrome

Vitis species

Description: The wild grape vine climbs with the aid of tendrils. Most grape vines produce deeply lobed leaves similar to the cultivated grape. Wild grapes grow in pyramidal, hanging bunches and are black-blue to amber, or white when ripe.

Habitat and Distribution: Wild grapes are distributed worldwide. Some kinds are found in deserts, others in temperate forests, and others in tropical areas. Wild grapes are commonly found throughout the eastern United States as well as in the southwestern desert areas. Most kinds are rampant climbers over other vegetation. The best place to look for wild grapes is on the edges of forested areas. Wild grapes are also found in Mexico. In the Old World, wild grapes are found from the Mediterranean region eastward through Asia, the East Indies, and to Australia. Africa also has several kinds of wild grapes.

Edible Parts: The ripe grape is the portion eaten. Grapes are rich in natural sugars and, for this reason, are much sought after as a source of energy-giving wild food. None are poisonous. Other Uses: You can obtain water from severed grape vine stems. Cut off the vine at the bottom and place the cut end in a container. Make a slant-wise cut into the vine about 1.8 meters upon the hanging part. This cut will allow water to flow from the bottom end. As water diminishes in volume, make additional cuts further down the vine.

CAUTION

To avoid poisoning, do not eat grapelike fruits with only a single seed (moonseed).... wild grape vine

Apple cider vinegar. Rich in potassium and other associated trace minerals. What calcium is to the bones, so is potassium to the soft tissues.

Action: detoxifier, antiseptic, anti-catarrhal, bitter, stomachic, antimicrobial.

Uses: Often successful against staphylococcal and streptococcal infection (impetigo, etc). High blood pressure, dizziness, overweight, chronic headache, chronic fatigue, chronic lack of stomach acid in old age, diarrhoea, mucous colitis, diverticulosis, Crohn’s disease, nausea, vomiting, red-brick deposit in the urine. For shingles, to alleviate itching and burning: apply neat to skin, two-hourly day or night. The neat vinegar applied, freely, for ringworm, varicose veins, and burns to remove smarting. To prevent night sweats, wipe down with neat vinegar.

Dosage is an individual matter. 1, 2 or 3 teaspoons to glass of water at each meal is helpful for destroying harmful bacteria in the digestive tract and to maintain good general health. ... cider vinegar

Haemorrhagic fever with kidney syndrome (HFRS). Has been known for years by the Chinese and other nations of antiquity. Over 3,000 cases recorded during the Korean War (1951- 1952), the disease taking its name from the River Hantaan, South Korea.

Cause: a virus spread by field mice, rats and other rodents. Incubation period: 2-3 weeks.

Symptoms: fever, headache, backache, severe nervous prostration, low blood pressure, red patches on skin, failure of kidneys, high protein levels in urine. Small red or purple spots indicate bleeding beneath the skin.

Treatment. Traditional. Ayurvedic:– Gotu Kola, Juniper. Dr Mattiolus regards Juniper as a preventative of the pestilence.

To be treated by or in liaison with a qualified medical practitioner. HARPAGOPHYTUM. See: DEVIL’S CLAW. ... hantaan virus

King, Herbalist’s Charter. From the Book of Statutes, 1215-1572. “At all times from henceforth it shall be lawful to every person being the King’s subject, having knowledge and experience of the nature of Herbs, Roots and Waters, or of the operation of the same, by speculation or practice within any part of the realm of England, or in any other of the King’s dominions, to practise, use and minister in and to any outward sore, uncome, wound, apostemations, outward swelling or disease, any herb or herbs, ointments, baths, pultes and amplaisters, according to their cunning, experience and knowledge in any of the diseases, sores and maladies before-said, and all other like to the same, or drinks for the Stone and Strangury, or Agues, without suit, vexation, trouble, penalty, or loss of their goods.”

Since 1542 there have been many attempts to expunge this law from the Statute Book. A formidable attack was launched by the Pharmacy and Medicines Bill, 1941, which was fought so vigorously by a Mr Montgomery and Mrs Hilda Leyel that herbalists won the concession to continue the right to practise. ... henry viii

Any type of hepatitis caused by a viral infection.

Five viruses that attack the liver as their primary target have been identified.

They cause hepatitis A, hepatitis B, hepatitis C, hepatitis D, and hepatitis E.... hepatitis, viral

Difficulty in swallowing due to webs of tissue forming across the upper oesophagus. The syndrome often occurs with severe iron-deficiency anaemia and affects middle-aged women.... plummer–vinson syndrome

A group of diseases of the central nervous system that occur many months or even years after infection with a virus. They cause gradual widespread destruction of nerve tissue, with progressive loss of brain function and a fatal outcome. Examples include Creutzfeldt–Jakob disease and kuru.... slow virus diseases

Assessment of a population’s health that relies on the collection of data on birth and death rates and on the causes of death.... statistics, vital

An outdated term for Sydenham’s chorea.... vitus’ dance

The capability of independent survival and development.... viability

A severe form of gingivitis in which bacterial infection causes painful ulceration of the gums.

(See also gingivitis, acute ulcerative.)... vincent’s disease

The ability to see different parts of the colour spectrum. Light perceived by the human eye consists of electromagnetic radiation (energy waves) with a spectrum of different wavelengths

between about 400 and 700 nanometres. Different wavelengths produce sensations of violet, indigo, blue, green, yellow, orange, and red when they fall on the retina and stimulate nerve signals, which are processed in the brain.

As light falls on the retina, it strikes light-sensitive cells called rods and cones. The rods can detect all visible light, but only the cones can distinguish colour. There are 3 types of cones: red-sensitive, blue-sensitive, and green-sensitive. Each responds more strongly to a particular part of the light spectrum. Because the cones are most concentrated in a central area of the retina called the fovea, colour vision is most accurate for objects viewed directly and is poor at the edges of vision. When light hits a cone, it causes the cone to emit an electrical signal, which passes to the brain via the optic nerve. Colour perception requires a minimum level of light, below which everything is seen as shades of grey. (See also colour vision deficiency; eye; perception; vision.)... colour vision

Any abnormality in colour vision that causes difficulty distinguishing between certain colours. Total absence of colour vision (monochromatism) is rare. The most common types of colour vision deficiency are reduced discrimination of red and green. Most cases of red and green colour vision deficiency are caused by defects in the light-sensitive cells in the retina. These defects are usually inherited, although occasionally defects are caused by retinal or optic nerve diseases or injury. The inherited defects tend to be sex-linked (see genetic disorders), which means that the majority of sufferers are male. A person with a severe green deficiency has difficulty distinguishing oranges, greens, browns, and pale reds. In severe red deficiency, all reds appear dull. A much rarer deficiency in which blue cannot be distinguished may be inherited or may be due to degeneration of the retina or optic nerve.... colour vision deficiency

The physical state of not having experienced sexual intercourse.... virginity

A term used to describe the quality of maleness, especially in sexual characteristics and performance.... virility

The resistance to flow of a fluid; its “stickiness”.

The viscosity of blood affects its ability to flow through small vessels.

An increase in the viscosity of blood increases the risk of thrombosis.... viscosity

The smallest known types of infectious agent. It is debatable whether viruses are truly living organisms or just collections of molecules capable of selfreplication under specific conditions. Their sole activity is to invade the cells of other organisms, which they then take over to make copies of themselves. Outside living cells, viruses are inert.

A single virus particle (virion) consists of an inner core of nucleic acid, which may be either DNA or RNA, surrounded

by 1 or 2 protective protein shells (capsids). Surrounding the outer capsid may be another layer, the viral envelope, which consists mainly of protein. The nucleic acid consists of a string of genes that contain coded instructions for making copies of the virus.

Common viral diseases include the common cold, influenza, and chickenpox (caused by the varicella–zoster virus). AIDS is caused by the human immunodeficiency virus (HIV).... viruses

Inability to see. This may develop slowly or suddenly and may be temporary or permanent, depending on the cause. Vision loss may affect 1 or both eyes. It can cause complete blindness or may affect only peripheral, or only central, vision.

Progressive loss of visual clarity is common with advancing age and may be due to a number of disorders (see vision, disorders of).

Sudden loss of vision may be caused by disorders such as hyphaema, severe uveitis, vitreous haemorrhage, or retinal haemorrhage.

Optic neuritis can reduce vision in 1 eye.

Damage to the nerve connections between the eyes and brain, or to the visual area of the brain, can cause loss of peripheral vision and may be a result of embolism, ischaemia, tumour, inflammation, or injury.... vision, loss of

A water-soluble vitamin that plays a vital role in the activities of several enzymes in the body. Vitamin B12 is important in the production of the genetic material of cells (and thus in growth and development), in the production of red blood cells in bone marrow, in the utilization of folic acid and carbohydrates in the diet, and in the functioning of the nervous system. Foods rich in vitamin B12 include liver, kidney, chicken, beef, pork, fish, eggs, and dairy products.Deficiency is almost always due to the inability of the intestine to absorb the vitamin, usually as a result of pernicious anaemia (see anaemia, megaloblastic). Less commonly, deficiency may result from gastrectomy, malabsorption, or veganism. The effects of vitamin B12 deficiency are megaloblastic anaemia, a sore mouth and tongue, and symptoms caused by damage to the spinal cord, such as numbness and tingling in the limbs. There may also be depression and memory loss. A high intake of vitamin B12 has no known harmful effects.... vitamin b12

Bleeding into the vitreous humour. A common cause is diabetic retinopathy. Vitreous haemorrhage often affects vision; a major haemorrhage causes poor vision until the blood is reabsorbed, which may not be for several months, if at all.... vitreous haemorrhage

one of the thin-walled projections outwards of the arachnoid membrane into the blood-filled sinuses of the dura, acting as a one-way valve for the flow of cerebrospinal fluid from the subarachnoid space into the bloodstream. Large villi, known as arachnoid granulations (or Pacchionian bodies), are found in the region of the superior sagittal sinus. They may be so distended as to cause pitting of the adjacent bone.... arachnoid villus

the ability to focus both eyes on an object at the same time, so that a person sees one image of the object he is looking at. It is not inborn, but acquired during the first few months of life. Binocular vision enables judgment of distance and perception of depth. See also stereoscopic vision.... binocular vision

A group of watersoluble vitamins comprising thiamine (vitamin B1), riboflavin (vitamin B2), niacin, pantothenic acid, pyridoxine (vitamin B6), biotin (vitamin H), and folic acid. Vitamin B12 is discussed above.

Thiamine plays a role in the activities of various enzymes involved in the utilization of carbohydrates and thus in the functioning of nerves, muscles, and the heart. Sources include whole-grain cereals, wholemeal breads, brown rice, pasta, liver, kidney, pork, fish, beans, nuts, and eggs.

Those susceptible to deficiency include elderly people on a poor diet, and people who have hyperthyroidism, malabsorption, or severe alcohol dependence. Deficiency may also occur as a result of severe illness, surgery, or injury.

Mild deficiency may cause tiredness, irritability, and loss of appetite. Severe deficiency may cause abdominal pain, constipation, depression, memory impairment, and beriberi; in alcoholics, it may cause Wernicke–Korsakoff syndrome. Excessive intake is not known to cause harmful effects.

Riboflavin is necessary for the activities of various enzymes involved in the breakdown and utilization of carbohydrates, fats, and proteins; the production of energy in cells; the utilization of other B vitamins; and hormone production by the adrenal glands. Liver, whole grains, milk, eggs, and brewer’s yeast are good sources. People who are susceptible to riboflavin deficiency include those taking phenothiazine antipsychotic drugs, tricyclic antidepressant drugs, or oestrogen-containing oral contraceptives, and those with malabsorption or severe alcohol dependence. Riboflavin deficiency may also occur as a result of serious illness, surgery, or injury.

Prolonged deficiency may cause soreness of the tongue and the corners of the mouth, and eye disorders such as amblyopia and photophobia.

Excessive intake of riboflavin is not known to have any harmful effects.

Niacin plays an essential role in the activities of various enzymes involved in the metabolism of carbohydrates and fats, the functioning of the nervous and digestive systems, the manufacture of sex hormones, and the maintenance of healthy skin. The main dietary sources are liver, lean meat, fish, nuts, and dried beans. Niacin can be made in the body from tryptophan (an amino acid). Most cases of deficiency are due to malabsorption disorders or to severe alcohol dependence. Prolonged niacin deficiency causes pellagra. Excessive intake is not known to cause harmful effects.

Pantothenic acid is essential for the activities of various enzymes involved in the metabolism of carbohydrates and fats, the manufacture of corticosteroids and sex hormones, the utilization of other vitamins, the functioning of the nervous system and adrenal glands, and growth and development. It is present in almost all vegetables, cereals, and animal foods. Deficiency of pantothenic acid usually occurs as a result of malabsorption or alcoholism, but may also occur after severe illness, surgery, or injury. The effects include fatigue, headache, nausea, abdominal pain, numbness and tingling, muscle cramps, and susceptibility to respiratory infections. In severe cases, a peptic ulcer may develop. Excessive intake has no known harmful effects.Pyridoxine aids the activities of various enzymes and hormones involved in the utilization of carbohydrates, fats, and proteins, in the manufacture of red blood cells and antibodies, in the functioning of the digestive and nervous systems, and in the maintenance of healthy skin. Dietary sources are liver, chicken, pork, fish, whole grains, wheatgerm, bananas, potatoes, and dried beans. Pyridoxine is also manufactured by intestinal bacteria. People who are susceptible to pyridoxine deficiency include elderly people who have a poor diet, those with malabsorption or severe alcohol dependence, or those who are taking certain drugs (including penicillamine and isoniazid). Deficiency may cause weakness, irritability, depression, skin disorders, inflammation of the mouth and tongue, anaemia, and, in infants, seizures. In very large amounts, pyridoxine may cause neuritis.

Biotin is essential for the activities of various enzymes involved in the breakdown of fatty acids and carbohydrates and for the excretion of the waste products of protein breakdown. It is present in many foods, especially liver, peanuts, dried beans, egg yolk, mushrooms, bananas, grapefruit, and watermelon. Biotin is also manufactured by bacteria in the intestines. Deficiency may occur during prolonged treatment with antibiotics or sulphonamide drugs. Symptoms are weakness, tiredness, poor appetite, hair loss, depression, inflammation of the tongue, and eczema. Excessive intake has no known harmful effects.

Folic acid is vital for various enzymes involved in the manufacture of nucleic acids and consequently for growth and reproduction, the production of red blood cells, and the functioning of the nervous system. Sources include green vegetables, mushrooms, liver, nuts, dried beans, peas, egg yolk, and wholemeal bread. Mild deficiency is common, but can usually be corrected by increasing dietary intake. More severe deficiency may occur during pregnancy or breastfeeding, in premature or low-birthweight infants, in people undergoing dialysis, in people with certain blood disorders, psoriasis, malabsorption, or alcohol dependence, and in people taking certain drugs. The main effects include anaemia, sores around the mouth, and, in children, poor growth. Folic acid supplements taken just before conception, and for the first 12 weeks of pregnancy, have been shown to reduce the risk of a neural tube defect.... vitamin b complex

see prostatectomy.... da vinci robot

see visual field.... field of vision

a trained nurse with specialist qualifications in *health promotion and public health. The role of the health visitor takes place within the primary health-care team and focuses on families with children under five years old, but can be extended to other targeted groups in the population (e.g. the elderly) to meet health needs in the wider community. Health visitors seek to educate, in particular by drawing attention to unmet needs in terms of health and social care.... health visitor

see domiciliary consultation.... home visit

see HIV.... human immunodeficiency virus

Latin: during life.... intra vitam

A group of dietary preparations containing 1 or more vitamins. Most healthy people who have a balanced diet do not need them. Supplements are used to treat diagnosed vitamin deficiency. They are also given to prevent vitamin deficiency in susceptible people, such as those who have increased requirements (for example, women who are pregnant or breastfeeding); those who follow a restricted diet (in veganism, for example); those with severe alcohol dependence; and people who have malabsorption, liver disorders, kidney disorders, or another serious illness or injury. In addition,vitamins are used to treat certain disorders.

For example, vitamin D is used to treat osteomalacia, and vitamin A derivatives are given for severe acne.... vitamin supplements

(echovirus) one of a group of RNA-containing viruses that are able to multiply in the gastrointestinal tract (see enterovirus). About 30 different types exist. Type A Coxsackie viruses generally cause less severe and less well-defined diseases, such as *hand, foot, and mouth disease, although some cause meningitis and severe throat infections (see herpangina). Type B Coxsackie viruses cause inflammation or degeneration of heart tissue, resulting in pericarditis or myocarditis, or brain tissue, producing meningitis or encephalitis. They can also attack the muscles of the chest wall, the bronchi, pancreas, thyroid, or conjunctiva and recent evidence suggests they may be implicated in diabetes in children and in motor neuron disease. See also Bornholm disease.... coxsackie virus

a virus responsible for an acute infection in humans with features similar to those of *Marburg disease. Transmission is by contact with infected blood and other body fluids and the incubation period is 2–21 days (7 days on average). The mortality rate is 53–88%, but intensive treatment (including rehydration) in the early stages of the disease can halt its rapid and usually irreversible progression to haemorrhaging of internal organs. Until recently, sporadic but short-lived outbreaks have occurred in Africa since 1976, when the virus was first identified during an outbreak in the region of the Ebola river, in Zaïre (now Democratic Republic of Congo). A major epidemic of the disease broke out in West Africa at the end of 2013 and lasted until May 2016: over 11,000 people died. An unknown species of animal – possibly a fruit bat – is assumed to act as a reservoir for the virus between outbreaks of the disease in humans.... ebola virus

(MSV manoeuvre) a technique used in breech delivery to promote flexion of, and safely deliver, the fetal head.... mauriceau–smellie–viet manoeuvre

(gentian violet) a dye used mainly for staining protozoans.... methyl violet

a group of large RNA-containing viruses that cause infections of the respiratory tract producing mild influenza-like symptoms. They are included in the paramyxovirus group (see myxovirus).... parainfluenza viruses

(RSV) a paramyxovirus (see myxovirus) that causes infections of the nose and throat. It is a major cause of bronchiolitis and pneumonia in young children. In tissue cultures infected with the virus, cells merge together to form a conglomerate (syncytium). RSV is thought to have a role in *sudden infant death syndrome. Vulnerable children can be treated with *ribavirin, but most children just require supportive measures.... respiratory syncytial virus

an archaic name for *Sydenham’s chorea.... st vitus’ dance

(stereopsis) perception of the shape, depth, and distance of an object as a result of having *binocular vision. The brain receives two distinct images from the eyes, which it interprets as a single three-dimensional image.... stereoscopic vision

see hibernating myocardium.... viable myocardium

n. see doxycycline.... vibramycin

n. (pl. vibrissae) a stiff coarse hair, especially one of the stiff hairs that lie just inside the nostrils.... vibrissa

adj. describing an action or function performed by an organ not normally involved in the function. For example, vicarious menstruation is a rare disorder in which monthly bleeding occurs from places other than the vagina, such as the sweat glands, breasts, nose, or eyes.... vicarious

combining form denoting the use of a video camera to view and record moving images. See videofluoroscopy.... video

(VCE) an investigation for visualizing the intestinal lining (mucosa). A capsule containing a miniature digital video camera is swallowed by the patient and passively propelled through the intestine by peristalsis. The images are uploaded to a computer for subsequent analysis. Various capsules are available for investigation of oesophageal, small-intestinal, and colonic disorders. The commonest in use is the small-intestinal capsule, for investigation of obscure gastrointestinal bleeding, recurrent iron-deficiency anaemia, or in cases of suspected Crohn’s disease, coeliac disease, or small-bowel tumours.... video capsule endoscopy

n. the technique of viewing and recording real time X-ray investigation using a video camera (see real-time imaging). This enables the moving images to be reviewed at a later time, by individual frames or in slow motion.... videofluoroscopy

n. see corneal topography.... videokeratography

n. a method of studying the vibration of the *vocal folds of the *larynx using high-speed digital photography. See laryngeal stroboscopy.... videokymography

n. a small *endoscope connected to a digital camera for examining the outer ear and eardrum.... video-otoscope

n. see DPP-IV inhibitors.... vildagliptin

n. see vinca alkaloid.... vinblastine

one of a group of *antimitotic drugs (see also cytotoxic drug) derived from the periwinkle (Vinca rosea). Vinca alkaloids are used especially to treat leukaemias and lymphomas; they include vinblastine, vincristine, and vindesine. Vinorelbine is used in the treatment of advanced breast cancer and *non-small-cell lung cancer. Vinflunine is given by intravenous infusion to treat *transitional cell carcinoma. Vinca alkaloids are highly toxic; side-effects include *myelosuppression, peripheral neuropathy, and severe irritation at the injection site.... vinca alkaloid

an obsolete term for *ulcerative gingivitis. [H. Vincent (1862–1950), French physician]... vincent’s angina

n. (pl. vincula) a connecting band of tissue. The vincula tendinum are threadlike bands of synovial membrane that connect the flexor tendons of the fingers and toes to their point of insertion on the phalanges.... vinculum

n. see vinca alkaloid.... vindesine

n. see vinca alkaloid.... vinflunine

n. a usually malignant tumour of islet cells of the pancreas that secretes large amounts of *VIP. This results in severe watery diarrhoea (‘pancreatic cholera’ or the Verner–Morrison syndrome), with loss of potassium and bicarbonate and a low level of stomach acid. The treatment is surgical removal of the tumour.... vipoma

(perivascular spaces) fluid-filled spaces that form around blood vessels in the *pia mater as they penetrate deeper brain tissue. They may dilate, resulting in raised intracranial pressure. [R. Virchow (1821–1902), German pathologist]... virchow–robin spaces

an enlarged lymph node that may be palpated above the left clavicle (the left supraclavicular fossa). It is strongly associated with abdominal malignancy, particularly cancer of the stomach, since the lymphatic drainage from the abdomen is channelled via the thoracic duct to the left side of the neck before it enters the left subclavian vein. Enlargement of the right supraclavicular lymph node is associated with lung and oesophageal cancer.... virchow’s node

theories that emphasize the ethical importance of the virtues (e.g., honesty or courage), true happiness, and practical wisdom (compare consequentialism; deontology). In medical ethics, the traits of a ‘good doctor’ provide the moral compass by which to assess professional practice.... virtue ethics

see pharyngeal arch.... visceral arch

see pharyngeal cleft.... visceral cleft

increased sensitivity to visceral stimulation after injury or inflammation of an internal organ, which can result in chronic pain syndromes.... visceral hyperalgesia

see pharyngeal pouch.... visceral pouch

combining form denoting the viscera.... viscero

n. a surgical technique in which a *viscoelastic material is used to dissect and separate layers of tissue.... viscodissection

a material exhibiting both viscous and elastic properties. It is used in ophthalmic surgery to help maintain the shape of ocular tissues as well as lubricate and minimize trauma. It is commonly used in intraocular surgery, such as cataract surgery. Viscoelastic materials are also used in dentistry for impression and filling materials.... viscoelastic material

n. see viscera.... viscus

see optic nerve.... visual pathway

see rhodopsin.... visual purple

(visual reinforced audiometry, VRA) a behavioural test of hearing for children aged approximately 6 to 30 months in which the subject sits between two calibrated loudspeakers. A sound is generated from one loudspeaker. Children who turn towards the sound are rewarded by brief illumination of a toy adjacent to the loudspeaker. Older children can be tested with headphones, rather than using the loudspeakers, to enable each ear to be tested separately. The test can be adapted for use with older subjects who have learning disabilities.... visual reinforcement audiometry

any of the collections of nerve cells in the brain that act as governing centres for different vital body functions – such as breathing, heart rate, blood pressure, temperature control etc. – making reflex adjustments according to the body’s needs. Most lie in the hypothalamus and brainstem.... vital centre

(intravital staining) the process of staining a living tissue by injecting a stain into the organism. Compare supravital staining.... vital staining

(Best’s disease) degeneration of the *macula of the eye that is inherited as a dominant characteristic and usually starts in childhood. There is widespread abnormality of retinal pigment epithelium (see retina) with the accumulation of a yellowish material, especially in the macular area.... vitelliform degeneration

n. the yolk of an ovum.... vitellus

n. the removal of the whole or part of the vitreous humour of the eye. Anterior vitrectomy is removal of the front portion of the vitreous humour. Vitrectomy is often required to remove a nonresolving vitreous haemorrhage and also as a part of surgical procedures on the retina, including repair of a detached retina.... vitrectomy

the separation of the *vitreous humour from the underlying retina. This is a normal ageing process, but it is also more common in such conditions as diabetes and severe myopia. It can sometimes cause a tear in the retina and lead to *retinal detachment.... vitreous detachment

n. a process in which eggs or embryos in vitro are preserved by being dehydrated, treated with an antifreeze chemical, and then flash-frozen with liquid nitrogen. They instantly become converted into a glassy material without the formation of ice crystals, which can damage the genetic material, seen with slower forms of freezing.... vitrification

n. inflammation within the vitreous humour of the eye.... vitritis

a mosquito-borne virus that usually causes mild symptoms in humans, including fever, skin rashes, muscle and joint pain, and headache. However, infection during pregnancy can result in brain abnormalities of the fetus, notably *microcephaly. Zika virus can also trigger *Guillain–Barré syndrome. Infection is usually from a mosquito bite, although the virus may also be transmitted by sexual intercourse.... zika virus

Juniperus virginiana

FAMILY: Cupressaceae

SYNONYMS: Red cedar, eastern red cedar, southern red cedar, Bedford cedarwood (oil).

GENERAL DESCRIPTION: A coniferous, slow-growing, evergreen tree up to 33 metres high with a narrow, dense and pyramidal crown, a reddish heartwood and brown cones. The tree can attain a majestic stature with a trunk diameter of over 1.5 metres.

DISTRIBUTION: Native to North America, especially mountainous regions east of the Rocky Mountains.

OTHER SPECIES: There are many cultivars of the red cedar; its European relative is the shrubby red cedar (J. sabina) also known as savin – see entry. It is also closely related to the East African cedarwood (J. procera).

HERBAL/FOLK TRADITION: The North American Indians used it for respiratory infections, especially those involving an excess of catarrh. Decoctions of leaves, bark, twigs and fruit were used to treat a variety of ailments: menstrual delay, rheumatism, arthritis, skin rashes, venereal warts, gonorrhoea, pyelitis and kidney infections.

It is an excellent insect and vermin repellent (mosquitoes, moths, woodworm, rats, etc.) and was once used with citronella as a commercial insecticide.

ACTIONS: Abortifacient, antiseborrhoeic, antiseptic (pulmonary, genito-urinary), antispasmodic, astringent, balsamic, diuretic, emmenagogue, expectorant, insecticide, sedative (nervous), stimulant (circulatory).

EXTRACTION: Essential oil by steam distillation from the timber waste, sawdust, shavings, etc. (At one time a superior oil was distilled from the red heartwood, from trees over twenty five years old.)

CHARACTERISTICS: A pale yellow or orange oily liquid with a mild, sweet-balsamic, ‘pencil wood’ scent. It blends well with sandalwood, rose, juniper, cypress, vetiver, patchouli and benzoin.

PRINCIPAL CONSTITUENTS: Mainly cedrene (up to 80 per cent), cedrol (3–14 per cent), and cedrenol, among others.

SAFETY DATA: Externally the oil is relatively non-toxic; can cause acute local irritation and possible sensitization in some individuals. Use in dilution only with care, in moderation. ‘The oil is a powerful abortifacient … use of the oil has been fatal.’. Avoid during pregnancy. Generally safer to use Atlas cedarwood.

AROMATHERAPY/HOME: USE

Skin Care: Acne, dandruff, eczema, greasy hair, insect repellent, oily skin, psoriasis.

Circulation, Muscles And Joints: Arthritis, rheumatism.

Respiratory System: Bronchitis, catarrh, congestion, coughs, sinusitis.

Genito-Urinary System: Cystitis, leucorrhoea.

Nervous System: Nervous tension and stress-related disorders.

OTHER USES: Extensively used in room sprays and household insect repellents. Employed as a fragrance component in soaps, cosmetics and perfumes. Used as the starting material for the isolation of cedrene.... cedarwood, virginian