An analog of arachidonic acid in which the 5,6 double bond has been replaced with an acetylene group.
Biochem./physiol. Wirkung
Inhibits 5-lipoxygenase of guinea pig leukocytes with an IC50 of 10 μM. In extracts of rat basophilic leukemia cells preincubated with 5,6-dehydro AA, the Ki for the conversion of arachidonic acid to 5-HPETE is 15 μM.
8Z,11Z,14Z-Eicosatriene-5-ynoic acid and its tritium-labelled analogue, [5,6-3H]arachidonic acid, have been synthesized on the basis of acetylenic compounds. [5,6-3H]Arachidonic acid has been used as substrate for the enzymatic synthesis of [5,6-3H]PGE2 and [5,6-3H]PGF2 alpha.
European journal of pharmacology, 519(3), 285-289 (2005-09-02)
Enteric neural activity modulates active transepithelial ion transport in the intestine. We investigated the neural circuits mediating neurogenic secretion in mucosal explants from porcine ileum. Transmural electrical stimulation increased short-circuit current, a measure of active ion transport, by 35+/-2 microA/cm2.
[5,6-3H]arachidonic acid has been prepared by catalytic reduction of eicosa-cis-8,11,14-trien-5-ynoic acid (IV) over Lindlar catalyst. When either [5,6-3H]arachidonic acid or [5,6-3H]PGH2 is converted into PGI2 by swine aortic microsomes, the tritium at C-6 is lost to the medium. Thus, the
Journal of immunology (Baltimore, Md. : 1950), 133(2), 938-945 (1984-08-01)
The quantitative relationships between the secretion of a granule-associated mediator, beta-hexosaminidase, and the oxidative metabolism of arachidonic acid by the 5-lipoxygenase pathway were analyzed for a homogeneous population of T cell-dependent, bone marrow-derived, murine mast cells. The mast cells were
Strong suppression by mononuclear leukocytes from human newborns on maternal leukocytes: mediation by prostaglandins.
S A Johnsen et al.
Clinical immunology and immunopathology, 23(3), 606-615 (1982-06-01)
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