Format

Send to

Choose Destination
Jpn J Pharmacol. 2000 Apr;82(4):338-42.

Effects of sphingosine 1-phosphate, a naturally occurring biologically active lysophospholipid, on the rat cardiovascular system.

Author information

1
Department of Pharmacology, Yamanashi Medical University Nakakoma-gun, Japan.

Abstract

Recent studies have indicated that sphingosine 1-phosphate (Sph-1-P) is released into the blood flow from activated platelets upon stimulation to exhibit a wide spectrum of biological functions. The purpose of the present study was to assess the acute cardiovascular effects of circulating Sph-1-P in the in vivo rat model. Intravenous administration of Sph-1-P decreased the heart rate, ventricular contraction and blood pressure, while it hardly affected the atrioventricular and intraventricular conduction. Sph-1-P did not affect the adenylate cyclase activities of the membrane preparations made from the right atrium and left ventricle. These results suggest that functional receptors like lysophospholipid receptor Edg-1, which can inhibit adenylate cyclase via Gi protein, are lacking in the rat heart. Moreover, these observations will provide a clue to better understand the various types of Sph-1-P-related pathophysiological processes.

PMID:
10875754
DOI:
10.1254/jjp.82.338
[Indexed for MEDLINE]
Free full text

Supplemental Content

Full text links

Icon for J-STAGE, Japan Science and Technology Information Aggregator, Electronic
Loading ...
Support Center