title: Unsaturated fatty acids stimulate the formation of lipoxygenase and cyclooxygenase products in rat spleen lymphocytes.
abstract: Rat spleen lymphocytes prelabelled with [14C] arachidonate were suspended in fresh medium in the presence or absence of exogenous non-radioactive fatty acids added in ethanol. It was found that fatty acids stimulate thromboxane B2, PGE2, HHT and HETE formation. The effect is specific for unsaturated fatty acids. It occurs at 50 micron concentrations and is apparent after 20 minutes incubation. Unsaturated fatty acids may serve an important role in the regulation of prostaglandin and hydroxy fatty acid metabolism in vivo. This may indicate a mechanism for the action of fatty acids on the immune response.
mesh_terms: D000818:Animals; D016718:Arachidonic Acid; D001095:Arachidonic Acids / Q000378:metabolism; D015232:Dinoprostone; D005231:Fatty Acids, Unsaturated / Q000494:pharmacology*; D066298:In Vitro Techniques; D008084:Lipoxygenase / Q000378:metabolism*; D008214:Lymphocytes / Q000187:drug effects* / Q000378:metabolism; D011451:Prostaglandin-Endoperoxide Synthases / Q000378:metabolism*; D011458:Prostaglandins E / Q000096:biosynthesis; D051381:Rats; D011919:Rats, Inbred Strains; D013154:Spleen / Q000187:drug effects / Q000378:metabolism; D013929:Thromboxane B2 / Q000096:biosynthesis
chemical_list: D001095:Arachidonic Acids; D005231:Fatty Acids, Unsaturated; D011458:Prostaglandins E; D016718:Arachidonic Acid; D013929:Thromboxane B2; D008084:Lipoxygenase; D011451:Prostaglandin-Endoperoxide Synthases; D015232:Dinoprostone