arachidonic acid

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Related to Arachidonic acids: Carboxylic acids, Essential fatty acids, Linoleic acids

ar·a·chi·don·ic acid

An unsaturated fatty acid, C20H32O2, present in animal fats and synthesized by the body from linoleic acid, that is essential in human nutrition and is a precursor in the biosynthesis of some prostaglandins.

[From arachidic, of the groundnut, from New Latin Arachis, groundnut genus, from Greek arakis, arakid-, diminutive of arakos, a leguminous plant.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

arachidonic acid

(Biochemistry) a fatty acid occurring in animal cells: the metabolic precursor of several groups of biologically active substances, including prostaglandins
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References in periodicals archive ?
The results of this study show that platelet aggregation induced by arachidonic acids and plasma levels of COX-2 and TXA [sub]2 were elevated in elderly hypertensive patients.
The primary endpoint was platelet aggregation rate (PAR) induced by arachidonic acid at discharge, and the secondary endpoint was the rate of thrombotic events including brain infarction and myocardial infarction during follow-up.
Relative Incorporation of Linoleic and Arachidonic Acids in Phospholipids and Triglycerides of Different Rat Tissues.
Within the years, the conversion of C18:2 n-6 to 20:4 n-6 by sequential D6-desaturation-elongation-[DELTA]5-desaturation emerged as the major route of biosynthesis of arachidonic acid (Figure 2).
CYP can produce epoxy-modified arachidonic acids (EETs) and hydroxy-modified arachidonic acids (HETEs), while COX can produce prostaglandins and thromboxanes, and LOX can produce leukotrienes and hydroperoxides (HPETEs).
There was no significant difference in the content of most fatty acids between the two breeds, with the exception of arachidonic acid and cis-11,14,17-eicosatrienoic acid.
Long-chain unsaturated fatty acids like arachidonic acids have been shown to be receptor independent activators of NADPH oxidase.
The following stimuli were tested: PMA (1-10 [micro]g/mL), arachidonic acid (1.5-25.0 [micro]M), zymosan (ratio of hemocyte to zymosan particles of 1:2-1:25), E.
After 2 h of oxidation, FAOOH and FAOH isomers of linoleic and arachidonic acids account for <1% of the corresponding unoxidized PUFAs, which make up >85% of total plasma PUFAs.
Arachidonic acid preparations consisted of comparable purity of the 15-hydroperoxy and -hydroxy isomers.
The production potential of eicosapentaenoic and arachidonic acids by the red alga Porphyridium cruentum.