Structural differences in the ability of lysophospholipids to inhibit endothelium-dependent hyperpolarization by acetylcholine in rat mesenteric arteries.

Abstract:

:The effects of different lysophospholipids on endothelium-dependent hyperpolarization by acetylcholine were examined in rat mesenteric arteries. Lysophosphatidylcholine with 14 or longer carbon acyl chain significantly inhibited the hyperpolarization, while that with 12 or lesser carbon acyl chain was without effect. Lysophosphatidylcholine with unsaturated acyl chain also showed a potent inhibition. Lysophosphatidylinositol and lyso-platelet activating factor, but not phosphatidylcholine, lysophosphatidic acid, lysophosphatidylethanolamine or lysophosphatidylserine, suppressed the hyperpolarization. These results suggest that the length of the carbon acyl chain and the size of the polar head group may be crucial for the effects of lysophospholipids on endothelium-dependent hyperpolarization. Accumulation of these lysophospholipids may play an important role in endothelial dysfunction associated with atherosclerosis.

authors

Fukao M,Hattori Y,Kanno M,Sakuma I,Kitabatake A

doi

10.1006/bbrc.1996.1532

subject

Has Abstract

pub_date

1996-10-14 00:00:00

pages

479-83

issue

2

eissn

0006-291X

issn

1090-2104

pii

S0006-291X(96)91532-6

journal_volume

227

pub_type

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