Leuc: From 1 Different Sources
(leuco-, leuk-, leuko-) combining form denoting 1. lack of colour; white. 2. leucocytes.
An abnormal mucous discharge from the vagina... leucorrhoea
A white blood cell.... leucocyte
A condition in which the polymorphonuclear LEUCOCYTES in the blood are increased in number. It occurs in many di?erent circumstances, and forms a valuable means of diagnosis in certain diseases; however, the condition may occur as a normal reaction in certain conditions (e.g. pregnancy, menstruation, and during muscular exercise). It is usually due to the presence of in?ammatory processes (see INFLAMMATION) – the increased number of leucocytes helping to destroy the invading bacteria. Thus, during many acute infective diseases, such as pneumonia, the number is greatly increased. In all suppurative conditions (where PUS is formed) there is also a leucocytosis, and if it seems that an ABSCESS is forming deep in the abdomen, or in some other site where it cannot be readily examined – as, for example, an abscess resulting from APPENDICITIS – the examination of a drop of blood gives a valuable aid in the diagnosis, and may be su?cient, in the absence of other signs, to point out the urgent need of an operation.... leucocytosis
Any white area on the skin... leucoderma
One of the essential, or indispensable, AMINO ACIDS. They are so-called because they cannot be synthesised, or manufactured, in the body, and are therefore essential constituents of the diet.... leucine
A condition in which the number of LEUCOCYTES in the blood is greatly reduced – by, say, ANAEMIA or cancer. It is also a dangerous sign in severe SEPTICAEMIA.... leucopenia
See LEUKOPLAKIA.... leucoplakia
See PSYCHOSURGERY.... leucotomy
Willd.
Synonym: A. alba Willd.
Family: Mimosaceae.
Habitat: Native to West Indies; now occurring throughout India.
English: Cassie Flower, Cassie Absolute, Sweet Acacia.
Ayurvedic: Arimeda, Vitkhadira.
Unani: Vilaayati Kikar, Gandbabuul, Guyaa Babuul, Durgandh Khair.
Siddha/Tamil: Kastuurivel, Vedday- ala.
Action: Bark—astringent, demulcent, anthelmintic, antidysenteric, anti-inflammatory (used in stomatitis, ulcers, swollen gums, dental caries, bronchitis, skin diseases).
Ripe pods contain tannins and several polyphenolic compounds. Essential oil from pods—direct muscle relaxant, cardiac depressant and sedative.Various plant parts are used in insanity, epilepsy, delirium and convulsions.
Family: Mimosaceae.
Habitat: Dry regions of the country, especially in Punjab, Rajasthan and Madhya Pradesh.
English: White Babul.
Ayurvedic: Arimeda, Arimedaka, Arimanja, Irimeda, Vitakhadir, Godhaa-skandha, Raamaka.
Unani: Kath Safed, Vilaayati Babuul, Guyaa Babuul.
Siddha/Tamil: Valval, Velvayalam.
Folk: Safed Babuul, Safed Kikar, Renvaa.
Action: Bark—bitter, demulcent and cooling; used in biliousness and bronchitis. Seeds—haemaggluti- nating activity has been reported. Leaves—antisyphilitic and antibacterial. Gum—demulcent.
EtOH (50%) extract of aerial parts— hypotensive and central nervous system depressant.The rootbark contains leucophleol, leucophleoxol and leucoxol.... acacia leucophloea
See HLA SYSTEM.... human leucocyte antigen (hla)
(Greek) In mythology, a nymph Lucippe, Leucipe, Lucipe... leucippe
Or leuko- – a pre?x meaning white.... leuco
(differential blood count) a determination of the proportions of the different kinds of white cells (leucocytes) present in a sample of blood. Usually 100 white cells are counted and classified under the microscope or by electronic apparatus, so that the results can readily be expressed as percentages of the total number of leucocytes and the absolute numbers per litre of blood. The information often aids diagnosis of disease.... differential leucocyte count
see HLA system.... human leucocyte antigen system
n. a procedure for removing a quantity of white cells from the blood. Blood is withdrawn from the patient through a vein and passed through a machine (a cell separator). White cells are removed and the rest of the blood is returned to the patient through another vein. This method can be used to collect peripheral blood *stem cells from a patient.... leucapheresis
Linn.
Family: Myrtaceae.
Habitat: Indegenous to Burma, Cambodia, Thailand, Malay Peninsula to Australia; grown in Indian gardens and parks.
English: Cajeput tree, Swamp Tea tree, White Tea tree.
Folk: Kaayaaputi. (The oil of Cajeput is imported into India, chiefly from France and Netherlands.)
Action: Oil—used as an expectorant in chronic laryngitis and bronchitis, and as a carminative. Acts as anthelmintic, especially against round worms. Enters into ointments for rheumatism and stiff joints, sprains and neuralgia, migraine, colds, influenza, and as a mosquito repellent.
Key application: The oil is antimicrobial and hypermic in vitro. (German Commission.)The oil contains terpenoids, 1,8- cineole (40-65%) as major component, with alpha-pinene, alpha-terpineol, nerolidol, limonene, benzaldehyde, valeraldehyde, dipentene and various sesquiterpenes; 3,5-dimethyl-4,6,di- O-methylphloroacetophenone.The essential oil of Melaleuca al- ternifolia (Tea Tree Oil) is indicated for acne, tinea pedis and toe and nail onychomycosis on the basis of human trials. (Sharon M. Herr.)Tea Tree Oil is distilled from the leaves of several species of Australian trees belonging the genus Melaleuca, principaly from M. alternifolia. Tea Tree Oil should contain a maximum of 15% 1,8-cineole and a minimum of 30% (+)-terpinen-4-ol, the principal germicidal ingredient. Other constituents, alpha-terpineol and linalool, also exhibit antimicrobial activity. (Cited in Rational Phytotherapy.)The essential oil of Melaleuca virdi- flora Solander ex Gaertner leaves, known as Niauli Oil, is used for catarrh of the upper respiratory tract. The oil is antibacterial and stimulatory to circulation in vitro. (German Commission E.) Like cajeput oil, the principal constituent is cineole (eucalyptol).A related species, M. genistifolia, indigenous to Australia, is grown in botanical gardens at Saharanpur and Lucknow (Uttar Pradesh). The leaves and terminal twigs yield 0.53% of a volatile oil which consists mainly of d-pinene, and about 2% cineole and traces of aldehyde.... melaleuca leucadendron
n. the presence of excess white blood cells (leucocytes) in the semen (more than 1 million/ml). It has an adverse effect on fertility.... leucocytospermia
n. see lysin.... leucolysin
n. a white opacity occurring in the cornea. Most leucomas result from scarring after corneal inflammation or ulceration. Congenital types may be associated with other abnormalities of the eye.... leucoma
n. white discoloration of the nails, which may be total or partial. There are many causes.... leuconychia
n. the process of the production of white blood cells (leucocytes), which normally occurs in the blood-forming tissue of the *bone marrow. See also granulopoiesis; haemopoiesis; lymphopoiesis; monoblast.... leucopoiesis
(leukostasis) n. abnormal leucocyte aggregation and clumping associated with a very high white blood cell count, often seen in *leukaemia patients. The brain and lungs are the two most commonly affected organs.... leucostasis
(PVL) softening of white matter around the ventricles of the brain in preterm infants due to a decreased blood supply to the brain, usually associated with *hypoxic-ischaemic encephalopathy. Diagnosis is by ultrasound, which shows increased density and, later, cysts in the periventricular area. The brain damage can cause visual impairment and cerebral palsy.... periventricular leucomalacia
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