| IAP | immunosuppressive acidic protein; inosinic acid pyrophosphorylase; Institute of Animal Physiology; i... |
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| IC | icteric, icterus; immune complex; immunoconjugate; immunocytochemistry; immunocytotoxicity; impedanc... |
| ICA | Institute of Clinical Analysis; internal carotid artery; intracranial aneurysm; islet cell antibody |
| ICAb | islet cell antibody |
| ICSA | islet cell surface antibody |
| cerebral amyloid angiopathy | <pathology> A condition where there is a deposition of amyloid (insoluble protein) in the walls of the arteries which supply the brain. This results in an increased risk of dementia and-or intracerebral haemorrhage. Cerebral amyloidosis or cerebral amyloid angiopathy, is a complication of primary amyloidosis. Origin: Gr. Pathos = disease (27 Sep 1997) |
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| serum amyloid | In secondary amyloidosis the fibrils deposited in tissues are unrelated to immunoglobulin light chains (in contrast to the situation in primary amyloidosis) and are made of amyloid A protein (AA protein). This is derived from serum amyloid A (SAA) that is the apolipoprotein of a high density lipoprotein and an acute phase protein. Partial proteolysis converts SAA into the pleated sheet configuration of the amyloid fibrils. Amyloid P protein is also found as a minor component of the fibrils (in both primary and secondary amyloidosis) and is derived from serum amyloid P that has similarity to C-reactive protein. The physiological role remains obscure. (18 Nov 1997) |
| serum amyloid P component | Precursor of amyloid component P, found in basement membrane. Member of the pentraxin family. See: serum amyloid. (18 Nov 1997) |
| familial amyloid neuropathy | <neurology> A disorder in which various peripheral nerves are infiltrated with amyloid and their functions disturbed, an abnormal prealbumin is also formed and is present in the blood; characteristically, it begins during mid-life and is found largely in persons of Portuguese descent. Other rare clinical types occur. Inheritance: autosomal dominant. Synonym: familial amyloidosis, hereditary amyloidosis. (05 Mar 2000) |
| alpha-aminoacyl-peptide hydrolases | <enzyme> Registry number: EC 3.4.11. (12 Dec 1998) |
| anionic neutrophil activating peptide | <cytokine> A cytokine that activates neutrophils and attracts neutrophils and T-lymphocytes. It is released by several cell types including monocytes, macrophages, T-lymphocytes, fibroblasts, endothelial cells, and keratinocytes by an inflammatory stimulus. Il-8 is a member of the beta-thromboglobulin superfamily and structurally related to platelet factor 4. Acronym: IL-8 (12 Dec 1998) |
| antibiotics, peptide | Antibiotics whose structure contains one or more peptides, usually cyclic. They are generally effective against gram-positive bacteria and act by inhibiting peptidoglycan synthesis in bacterial cell walls. (12 Dec 1998) |
| atrial natriuretic peptide | <hormone> This cardiac hormone (28 amino acid residues) regulates salt and water balance in body fluids and blood pressure, it has potential as a medication to treat heart and kidney failure and the buildup of excess fluid in tissue. (09 Oct 1997) |
| bradykinin-potentiating peptide | <chemical> 2-l-tryptophan-3-de-l-leucine-4-de-l-proline-8-l-glutamine bradykinin potentiator b. A synthetic nonapeptide with the sequence pyr-trp-pro-arg-pro-gln-ile-pro-pro, which is identical to that of the peptide from the venom of the snake, bothrops jararaca. It acts as an inhibitor of kininase II and angiotensin I and has been proposed as an antihypertensive agent. Pharmacological action: angiotensin-converting enzyme inhibitors, antihypertensive agents. Chemical name: Bradykinin potentiator B, 2-L-tryptophan-3-de-L-leucine-4-de-L-proline-8-L-glutamine- (12 Dec 1998) |
| brain natriuretic peptide | <hormone, protein> Brain peptide that induces diuresis, related to atrial natriuretic peptide. (18 Nov 1997) |
| calcitonin gene-related peptide | <protein> A second product transcribed from the calcitonin gene. Calcitonin gene related peptide is found in a number of tissues including nervous tissue. It is a vasodilator that may participate in the cutaneous triple response. It is a neuropeptide of 37 amino acids with structural homology to salmon calcitonin. Co-localises with substance P in neurons. It occurs as a result of alternative processing of mRNA from the calcitonin gene. The neuropeptide is widely distributed in neural tissue of the brain, gut, perivascular nerves, and other tissue. The peptide produces multiple biological effects and has both circulatory and neurotransmitter modes of action. In particular, it is a potent endogenous vasodilator. Intracerebral administration leads to a rise in noradrenergic sympathetic outflow, a rise in blood pressure and a fall in gastric secretion. Acronym: CGRP (05 May 2002) |
| vasoactive intestinal peptide | <gastroenterology, protein> Peptide of 28 amino acids, originally isolated from porcine intestine, but later found in the central nervous system where it acts as a neuropeptide and is released by specific interneurons. May also affect behaviour of cells of the immune system. Acronym: VIP (05 Jan 1998) |
| gastrin-releasing peptide | <hormone> A regulatory peptide (27 amino acids) thought to be the mammalian equivalent of bombesin. It elicits gastrin release and regulates gastric acid secretion and motor function. It causes bronchoconstriction and vasodilation in the respiratory tract and stimulates the growth and mitogenesis of cells in culture. Once released from nerves in the antrum of the stomach, the neuropeptide stimulates release of gastrin from the g cells. Chemical name: Gastrin-releasing peptide (12 Dec 1998) |
| receptors, calcitonin gene-related peptide | Cell surface proteins that bind calcitonin gene-related peptide (cgrp) with high affinity and trigger intracellular changes which influence the behaviour of cells. Cgrp receptors are present in both the central nervous system and the periphery and are not the same as calcitonin receptors. (12 Dec 1998) |
| receptors, invertebrate peptide | Cell surface receptors for invertebrate peptide hormones or neuropeptides. (12 Dec 1998) |