| PR | by way of the rectum [Lat. per rectum]; far point [of accommodation] [Lat. punctum remotum]; palindr... |
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| Pr | praseodymium; prednisolone; presbyopia; primary; prism; production rate [of steroid hormones]; prola... |
| ACR | abnormally contracting region; absolute catabolic rate; acriflavine; adenomatosis of colon and rectu... |
| CR | calculation rate; calculus removed; calorie-restricted; cardiac rehabilitation; cardiac resuscitatio... |
| MR | Maddox rods; magnetic resistance; magnetic resonance; mandibular reflex; mannose-resistant; may repe... |
| secretory nerve | <anatomy, nerve> A nerve conveying impulses that excite functional activity in a gland. Synonym: secretomotor nerve. (05 Mar 2000) |
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| secretory otitis media | Inflammation of middle ear mucosa, often accompanied by accumulation of fluid, secondary to eustachian tube obstruction. Synonym: secretory otitis media. (05 Mar 2000) |
| secretory protein | <protein> In eukaryotes, proteins synthesised on rough endoplasmic reticulum and destined for export. Nearly all proteins secreted from cells are glycosylated (in the Golgi apparatus, although there are exceptions (albumin). In prokaryotes, secreted proteins may be synthesised on ribosomes associated with the plasma membrane or exported post translation. (18 Nov 1997) |
| secretory vesicle | <cell biology> Membrane bounded vesicle derived from the Golgi apparatus and containing material that is to be released from the cell. The contents may be densely packed, often in an inactive precursor form (zymogen). (18 Nov 1997) |
| IgA, secretory | The principle ig found in exocrine secretions such as milk, respiratory and intestinal mucin, saliva and tears. It is composed of two to four molecules of 7s IgA and one molecule each of j chain and secretory component (sc), also called secretory piece. Molecular weight appr. 400,000. (12 Dec 1998) |
| anabolic steroid | <endocrinology> A type of steroid hormone that stimulates the synthesis of protein. Anabolic steroids are compounds which stimulate the body into anabolism. This process involves the building of complex compounds from smaller simpler ones (for example proteins are built from amino acids). This process requires energy. (13 Nov 1997) |
| receptors, steroid | Proteins found usually in the cytoplasm or nucleus that specifically bind steroid hormones and trigger changes influencing the behaviour of cells. The steroid receptor-steroid hormone complex regulates the transcription of specific genes. (12 Dec 1998) |
| gonadal steroid-binding globulin | A protein that transports 65% of the testosterone in plasma. Synonym: sex steroid-binding globulin. (05 Mar 2000) |
| saturated steroid 6 alpha-hydroxylase | <enzyme> Acts on 5 alpha-androstane-3 beta,17 beta-diol and 5 alpha-pregnan-3 beta-ol-20-one; does not require cytochrome p-450 Registry number: EC 1.14.99.- Synonym: sat steroid 6alpha-hydroxylase (26 Jun 1999) |
| sex steroid-binding globulin | A protein that transports 65% of the testosterone in plasma. Synonym: sex steroid-binding globulin. (05 Mar 2000) |
| steroid | A group name for lipids that contain a hydrogenated cyclopentanoperhydrophenanthrene ring system. Some of the substances included in this group are progesterone, adrenocortical hormones, the gonadal hormones, cardiac aglycones, bile acids, sterols (such as cholesterol), toad poisons, saponins and some of the carcinogenic hydrocarbons. (18 Nov 1997) |
| steroid 11-alpha-hydroxylase | <enzyme> Converts 11-deoxycortisol to 11-alpha cortisol (the 11-alpha isomer of hydrocortisone) Registry number: EC 1.14.99.- (26 Jun 1999) |
| steroid 11 beta-monooxygenase | <enzyme> A steroid hydroxylase system found in adrenal tissues. It catalyses the 11-hydroxylation of steroids in the presence of molecular oxygen and consists of an NADPH-specific flavoprotein, a non-haem iron protein, and cytochrome p-450. Its deficiency is a cause of congenital adrenal hyperplasia (adrenal hyperplasia, congenital). Chemical name: Steroid, reduced-adrenal-ferredoxin:oxygen oxidoreductase (11 beta-hydroxylating) Registry number: EC 1.14.15.4 (12 Dec 1998) |
| steroid 12-monooxygenase | <enzyme> A steroid hydroxylase found in liver microsomes. It catalyses the 12-hydroxylation of steroids in the presence of NADPH, cytochrome p-450, and molecular oxygen. It is an important enzyme in the synthesis of cholic acid from cholesterol in the liver. Chemical name: Steroid, hydrogen-donor:oxygen oxidoreductase (12-alpha-hydroxylating) Registry number: EC 1.14.99.- (12 Dec 1998) |
| steroid 14-alpha-hydroxylase | <enzyme> From induced vegetative cell cultures of mucor piriformis; hydroxylates progesterone to 14-alpha-hydroxyprogesterone in the presence of NADPH and oxygen Registry number: EC 1.14.13.- Synonym: progesterone 14-alpha-hydroxylase (26 Jun 1999) |