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Beclobrinic Acid--A New Hypolipidemic Agent--Inhibits in Vitro Human Platelet Activation by Blocking Prostaglandin Synthesis

Beclobrinic Acid--A New Hypolipidemic Agent--Inhibits in Vitro Human Platelet Activation by Blocking Prostaglandin Synthesis

K Anwer, J Gabis, K Romstedt, C Gojer, Huzoor-Akbar

Life Sci. 1985 Jul 8;37(1):63-70.

PMID: 3925267

Abstract:

Effects and the mechanism of the antiplatelet actions of beclobrinic acid, free acid form of a new hypolipidemic agent beclobrate [(+)-2-[d-(P-chlorophenyl)p-tolyl)oxy)-2-methyl-butyrate), were examined using human platelets. Platelet-rich plasma (PRP) which has been prelabeled with (14C)-serotonin was incubated with beclobrinic acid (BBA) for one minute before the addition of various agonists. BBA (0.1-1.5 mM) inhibited platelet aggregation and serotonin secretion induced by ADP, epinephrine, arachidonic acid and collagen in a concentration dependent manner. BBA also inhibited arachidonic acid-induced production of malondialdehyde (MDA), a byproduct of prostaglandins, in a concentration dependent manner. However, up to 1.0 mM BBA did not inhibit platelet aggregation induced by U46619, a stable analog of prostaglandin H2. In other experiments BBA also blocked thrombin-induced release of (3H)-arachidonic acid from platelet phospholipids. These findings suggest that: (a) BBA inhibits platelet aggregation and serotonin secretion by inhibiting prostaglandin synthesis at two steps. First by interfering in the release of arachidonic acid from platelet phospholipids and second by inhibiting its conversion into prostaglandins; and (b) BBA does not inhibit the action of prostaglandins on human platelets.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP70155587	Pyruvic-2-13C acid (free acid)		70155-58-7	Price

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