cholesteatoma, middle ear |
Cholesteatoma associated with chronic infection of the middle ear, formed of the outer desquamating layers of stratified squamous epithelium which has extended inward and upward to line the tympanum, epitympanum, and antrum. (12 Dec 1998) |
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cholesteatomatous |
Of or pertaining to cholesteatoma. (05 Mar 2000) |
cholestenes |
Steroids with methyl groups at c-10 and c-13 and a branched 8-carbon chain at c-17. Members include compounds with any degree of unsaturation; however, cholestadienes is available for derivatives containing two double bonds. (12 Dec 1998) |
cholestenone |
A dehydrocholestanone, differing from cholestanone by the presence of a double bond between carbons 4 and 5. (05 Mar 2000) |
cholestenone 5 beta-reductase |
<enzyme> A liver enzyme; may be same protein as EC 1.3.1.3 Registry number: EC 1.3.1.23 Synonym: delta(4)-3-ketosteroid-5 beta reductase, 3-keto-5-beta steroid-nadp+ -delta 4-oxidoreductase, androstenedione 5 beta-reductase, delta(4)-oxosteroid 5 beta-reductase, delta(4)-3-oxosteroid 5beta-reductase (26 Jun 1999) |
cholestenones |
Cholestenes with one or more double bonds and substituted by any number of keto groups. (12 Dec 1998) |
cholesteraemia |
The presence of enhanced quantities of cholesterol in the blood. Synonym: cholesterinaemia, cholesterolaemia. Origin: cholesterol + G. Haima, blood (05 Mar 2000) |
cholesteride |
An obsolete term for a cholesteryl ester of a fatty acid. (05 Mar 2000) |
cholesterin |
1. <biochemistry> A pearly, fatlike steroid alcohol, C27H45OH, crystallizing in the form of leaflets or plates from dilute alcohol and found in animal fats and oils, in bile, blood, brain tissue, milk, yolk of egg, myelin sheaths of nerve fibres, the liver, kidneys and adrenal glands. It constitutes a large part of the most frequently occurring type of gallstones and occurs in atheroma of the arteries, in various cysts and in carcinomatous tissue. Most of the bodys cholesterol is synthesised in the liver, but some is absorbed from the diet. It is a precursor of bile acids and is important in the synthesis of steroid hormones. 2. <chemical> A commercial preparation of cholesterol is used as a pharmaceutic aid. Synonym: cholesterin. Origin: Gr. Stereos = solid (15 Jan 1998) |
cholesterinaemia |
The presence of enhanced quantities of cholesterol in the blood. Synonym: cholesterinaemia, cholesterolaemia. Origin: cholesterol + G. Haima, blood (05 Mar 2000) |
cholesterinised antigen |
Cardiolipin to which cholesterol has been added. (05 Mar 2000) |
cholesterinosis |
Synonym: cholesterolosis. (05 Mar 2000) |
cholesterinuria |
Synonym: cholesteroluria. Origin: cholesterin + G. Ouron, urine (05 Mar 2000) |
cholesteroderma |
The occurrence of patches of yellow colour in the skin, resembling xanthoma, but without the nodules or plates. Synonym: cholesteroderma, xanthochroia, xanthoderma, xanthopathy, yellow disease, yellow skin. Origin: xantho-+ G. Chroma, colour (05 Mar 2000) |
cholesterol |
1. <biochemistry> A pearly, fatlike steroid alcohol, C27H45OH, crystallizing in the form of leaflets or plates from dilute alcohol and found in animal fats and oils, in bile, blood, brain tissue, milk, yolk of egg, myelin sheaths of nerve fibres, the liver, kidneys and adrenal glands. It constitutes a large part of the most frequently occurring type of gallstones and occurs in atheroma of the arteries, in various cysts and in carcinomatous tissue. Most of the bodys cholesterol is synthesised in the liver, but some is absorbed from the diet. It is a precursor of bile acids and is important in the synthesis of steroid hormones. 2. <chemical> A commercial preparation of cholesterol is used as a pharmaceutic aid. Synonym: cholesterin. Origin: Gr. Stereos = solid (15 Jan 1998) |