eicosanoid(redirected from Icosanoid)
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Related to Icosanoid: prostaglandin
Any of a group of substances that are derived from arachidonic acid, including leukotrienes, prostaglandins, and thromboxanes.
eicosanoidA 20-carbon cyclic fatty acid derived from arachidonic acid that is synthesised from membrane phospholipids. Eicosanoids and other arachidonic acid metabolites (e.g., HETE, HPETE, leukotrienes, prostaglandins and thromboxanes) are site-specific, increase during shock and after injury, and have diverse functions, including bronchoconstriction, bronchodilation, vasodilation and vasoconstriction.
eicosanoidPhysiology A 20-carbon cyclic fatty acid which with its arachidonic acid metabolites–eg, HETE, HPETE, leukotrienes, PGs, and thromboxanes, are site-specific, ↑ during shock and after injury, have diverse functions–eg, bronchoconstriction, bronchodilation, vasodilation, vasoconstriction. See Arachidonic acid, Bad eicosanoid, Good eicosanoid, Zone-favorable diet.
Any of several autocrine or paracrine cytokines formed from the metabolism of arachidonic acid. They include prostaglandins, thromboxanes, and leukotrienes.