| prostaglandin |
a type of "tissue" hormone actively involved in many processes of human pregnancy. Tissue hormones are produced in the tissue in which they work (unlike circulating hormones produced in glands). In pregnancy, prostaglandins have a role preparing the uterus and cervix for delivery in the last days and weeks of pregnancy. Prostaglandins are also involved in headaches, arthritis, and menstrual cramping. ...
Ãâó: www.abcbirth.com/lGlossary.html
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| prostaglandin |
Any of a class of physiologically active substances present in many tissues, with effects such as vasodilation, vasoconstriction, stimulation of intestinal or bronchial smooth muscle, uterine stimulation, and antagonism to hormones influencing lipid metabolism. Prostaglandins are prostanoic acids with side chains of varying degrees of unsaturation and varying degrees of oxidation. Often abbreviated PGA, PGB, PGC, PGD, etc. with numeric subscripts, according to structure.
Ãâó: www.endovasc.com/glossary/glossary.html
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| prostaglandin |
Any of various oxygenated unsaturated cyclic fatty acids of animals that have a variety of hormonelike actions (as in controlling blood pressure or smooth muscle contraction). Top
Ãâó: www.tnurology.com/uro.htm
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| prostaglandin inhibitor |
A substance that inhibits the production of prostaglandins. Nonsteroidal and steroid anti-inflammatory agents are two major categories that inhibit prostaglandins.
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| prostaglandin endoperoxide synthase |
[EC 1.14.99] an enzyme of the oxidoreductase class that has both cyclooxygenase and peroxidase activities, which together catalyze the first three reactions in the synthesis of prostaglandins and thromboxanes from arachidonic acid. Its cyclooxygenase activity catalyzes the first two reactions, each of which adds a molecule of oxygen to arachidonic acid, to form the intermediate PGG2; its peroxidase activity catalyzes the conversion of PGG2 to the intermediate PGH2, from which are formed the prostaglandins and thromboxanes. See illustration at prostaglandin.
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
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