| senescent | Growing old. (05 Mar 2000) |
|---|---|
| senescent cell antigen | <immunology> An antigen (62 kD) that appears on the surface of senescent erythrocytes and is immunologically cross reactive with isolated Band III protein. Seems to be recognised by an autoantibody and the immunoglobulin coated erythrocyte is then removed from circulation by cells such as Kuppfer cells of the liver that have Fc receptors. Intracellular cleavage of intact band III by a calcium activated protease, calpain, may reveal the antigen in situ. (18 Nov 1997) |
| sengreen | <botany> The houseleek. Origin: AS. Singrne, properly, evergreen, fr. Sin (in composition) always + grene green; akin to OHG. Sin- ever, L. Semper. Source: Websters Dictionary (01 Mar 1998) |
| Sengstaken, Robert | <person> U.S. Neurosurgeon, *1923. See: Sengstaken-Blakemore tube. (05 Mar 2000) |
| Sengstaken-Blakemore tube | A tube with three lumens, one for drainage of the stomach and two for inflation of attached gastric and oesophageal balloons; used for emergency treatment of bleeding oesophageal varices. (05 Mar 2000) |
| senile | Of or pertaining to old age; proceeding from, or characteristic of, old age; affected with the infirmities of old age; as, senile weakness. "Senile maturity of judgment. <medicine> " Senile gangrene, a form of gangrene occuring particularly in old people, and caused usually by insufficient blood supply due to degeneration of the walls of the smaller arteries. Origin: L. Senilis, from senex, gen. Senis, old, an old man: cf. F. Senile. See Senior. Source: Websters Dictionary (01 Mar 1998) |
| senile amyloidosis | A common form of amyloidosis in very old people, usually mild and limited to the heart. See: amyloidosis of aging. (05 Mar 2000) |
| senile arteriosclerosis | Arteriosclerosis similar to hypertensive arteriosclerosis, but as a result of advanced age rather than hypertension. (05 Mar 2000) |
| senile atrophoderma | Atrophoderma senilis, the loss of collagen, with thinning and decreased elasticity of the skin associated with old age. (05 Mar 2000) |
| senile atrophy | Wasting of tissues and organs with advancing age from decreased catabolic or anabolic processes, at times due to endocrine changes, decreased use, or ischemia. Synonym: geromarasmus. (05 Mar 2000) |
| senile cataract | A cataract occurring spontaneously in the elderly; mainly a cuneiform cataract, nuclear cataract, or posterior subcapsular cataract, alone or in combination. (05 Mar 2000) |
| senile chorea | A disorder resembling Sydenham's chorea, not associated with cardiac disease or dementia, occurring in the aged. (05 Mar 2000) |
| senile degeneration | The process of involution occurring in old age. (05 Mar 2000) |
| senile delirium | Delirium associated with senile dementia. (05 Mar 2000) |
| senile dementia | <neurology> A form of dementia caused by destruction (atrophy) of the frontal lobes of the brain. This condition leads to the progressive deterioration of mental functioning. Incidence: 9 out of 10,000 people in the population. (27 Sep 1997) |