Comparative studies with 15(R)-15-methylprostaglandin E2 (arbaprostil) in rat femoral arterial preparations in vivo and in vitro.
GENERAL PHARMACOLOGY 1993;
24:1177-85. [PMID:
8270177 DOI:
10.1016/0306-3623(93)90366-6]
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Abstract
1. The vasodilator responses to 15(R)-15-methylprostaglandin E2 (arbaprostil), prostaglandin (PG) E2 and acetylcholine (ACh) administered into the femoral artery intra-arterial (i.a.) of anesthetized rats were attenuated by i.a. infusion of methylene blue, while that to nicardipine remained unaffected in the same dose-range of methylene blue. 2. The vasocontractor responses to arbaprostil and PGE2 in isolated femoral arterial strips were significantly potentiated by removal of the endothelium and the presence of NG-monomethyl L-arginine, while that to U-46619 remained unaffected under the same condition. 3. The present result indicates that the endothelium-dependent mechanism may play an important role in the vascular response to arbaprostil, like PGE2 and ACh.
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