| antag | antagonist |
|---|---|
| CA | anterior commissure [Lat. commissura anterior]; calcium antagonist; California [rabbit]; cancer; Can... |
| FAA | folic acid antagonist; formaldehyde, acetic acid, alcohol |
| Ant | Antagonist |
|---|---|
| CA | calcium antagonist |
| GnRH-A | GnRH antagonist |
| H2-RA | Histamine-2 receptor antagonist |
| IL 1ra | IL 1 receptor antagonist |
| antagonist | <pharmacology> A substance that tends to nullify the action of another, as a drug that binds to a cell receptor without eliciting a biological response. Origin: Gr. Antagonistes = an opponent (18 Nov 1997) |
|---|---|
| antagonistic effect | This is the consequence of one chemical (or group of chemicals) counteracting the effects of another chemical, the opposing chemicals cancel out each other's effects. (09 Oct 1997) |
| antagonistic muscles | Those having an opposite function, the contraction of one having the potential, in theory, to "neutralise" that of the other. (05 Mar 2000) |
| antagonistic reflexes | Reflex's which do not act toward a common purpose, and cannot together traverse the final common path. (05 Mar 2000) |
| aldosterone antagonist | An agent that opposes the action of the adrenal hormone aldosterone on renal tubular mineralocorticoid retention; these agents, e.g., spironolactone, are useful in treating the hypertension of primary hyperaldosteronism, or the sodium retention of secondary hyperaldosteronism. (05 Mar 2000) |
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| associated antagonist | One of two muscles or groups of muscles which pull in nearly opposite directions, but which, when acting together, move the part in a path between their diverging lines of action. (05 Mar 2000) |
| beta-adrenoreceptor antagonist | A class of drugs that compete with beta-adrenergic agonists for available receptor sites; some compete for both b1 and b2 receptors (e.g., propranolol) while others are primarily either b1 (e.g., metoprolol) or b2 blockers; used in the treatment of a variety of cardiovascular diseases where beta-adrenergic blockade is desirable. Synonym: beta-adrenergic receptor blocking agent, beta-adrenoreceptor antagonist, beta-blocker. (05 Mar 2000) |
| calcium antagonist | calcium channel-blocking agent |
| calcium channel antagonist | <pharmacology> A class of drugs that act by selective inhibition of calcium ion influx through or across cell membranes or on the release and binding of calcium in intracellular pools. Calcium channel blockers are used primarily in the treatment of certain heart conditions and stroke. As they are inducers of vascular and other smooth muscle relaxation, they are also used in the treatment of hypertension and cerebrovascular spasms, as myocardial protective agents, and in the relaxation of uterine spasms. Synonym: calcium antagonist, calcium channel-blocker, slow channel-blocking agent. (12 May 2002) |
| mixed opioid agonist-antagonist | <pharmacology> A compound that has an affinity for two or more types of opioid receptors and blocks opioid effects on one receptor type while producing opioid effects on a second receptor type. (13 Nov 1997) |
| competitive antagonist | An antimetabolite. (05 Mar 2000) |
| muscarinic antagonist | Drugs which bind with muscarinic cholinergic receptors but do not activate them, thus preventing access to acetylcholine; examples include atropine, scopolamine, propantheline, and pirenzepine. (05 Mar 2000) |
| H2 antagonist | <pharmacology> A class of anti-ulcer medication which work through the inhibition of basal and nocturnal gastric acid secretion by competitive inhibition of the action of histamine at histamine H2 receptor sites on the parietal cells. Drugs of this type block gastric acid secretion and are therefore clinically useful in treating duodenal ulcers. Examples include cimetidine (Tagamet), famotidine (Pepcid), nizatidine (Axid) and ranitidine (Zantac). (27 Sep 1997) |
| insulin antagonist | Something that opposes or fights the action of insulin. Insulin lowers the level of glucose (sugar) in the blood, whereas glucagon raises it, therefore, glucagon is an antagonist of insulin. (09 Oct 1997) |
| oestrogen antagonist | <pharmacology> A drug or compound which inhibit or antagonise the action or biosynthesis of oestrogen. Tamoxifen also has agonist or stimulatory actions as well as blocking effects. There are also selective oestrogen-receptor modulators (SERMs). For example, raloxifene (trade name Evista) is classified as a SERM because it prevents bone loss (like oestrogen) and lowers serum cholesterol (like oestrogen) but (unlike oestrogen) does not stimulate the endometrial lining of the uterus. (12 May 2002) |
| enzyme antagonist | An antimetabolite or inhibitor of enzyme action. (05 Mar 2000) |
| folate antagonist | <pharmacology> One of a group of substances which blocks the formation of nucleotides that require the presence of folate (one of the B vitamins) before they can be made. The substance does this by blocking key steps in the reaction sequence. These substances are often used to treat cancer because fast-growing cancerous cells usually need to use the blocked reactions more than normal cells. (09 Oct 1997) |
| folic acid antagonist | <pharmacology> A chemical which inhibits a cells capacity to use folic acid and so prevent cell division, for example methotrexate. See: chemotherapy. (12 Nov 1997) |
| antagonistic muscle |
(physiology) a muscle that opposes the action of another; "the biceps and triceps are antagonistic muscles"
Ãâó: wordnet.princeton.edu/perl/webwn
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| antagonist |
adversary: someone who offers opposition a muscle that relaxes while another contracts; "when bending the elbow the triceps are the antagonist" a drug that neutralizes or counteracts the effects of another drug
Ãâó: wordnet.princeton.edu/perl/webwn
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| antagonistic reflexes |
reflex movements occurring not in the muscle which has been stretched but in its antagonist.
Ãâó: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| antagonist |
The antagonist is the character (or group of characters) of a story who represents the opposition against which the heroes and/or protagonists must contend. In the classic style of story wherein the action consists of a hero fighting a villain, the two can be regarded as protagonist and antagonist, respectively. However, authors have often created more complex situations. ...
Ãâó: en.wikipedia.org/wiki/Antagonist
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| antagonist |
In medicine, a substance that stops the action or effect of another substance. For example, a drug that blocks the stimulating effect of estrogen on a tumor cell is called an estrogen receptor antagonist.
Ãâó: www.stjude.org/glossary
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| antagonist | a drug that neutralizes or counteracts the effects of another drug |
|---|---|
| antagonist | a muscle that relaxes while another contracts |
| antagonist | someone who offers opposition |
| antagonist | incapable of harmonious association |
| antagonist | used especially of drugs or muscles that counteract or neutralize each other's effect |
| antagonist | arousing animosity or hostility |
| antagonist | characterized by antagonism or antipathy |
| antagonist | indicating opposition or resistance |
| antagonist | a muscle that opposes the action of another |
| antagonist | in an antagonistic manner |
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