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ID 30401
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Author
Ogulener, Nuran
Larabal, Eda
Baysal, Firuz
Dikmen, Atilla
Abstract

The possible role of nitric oxide (NO) and vasoactive intestinal polypeptide on isoprenaline-induced relaxation of the mouse longitudinal gastric fundal strips precontracted with 5.4 x 10(-7) M carbachol was investigated. Isoprenaline (5 x 10(-7) M, 10(-6) M and 5 x 10(-6) M) produced a concentration-dependent relaxations. NG-nitro L-arginine (10(-4) M) partly inhibited isoprenaline-induced relaxation. The inhibitory action of NG-nitro L-arginine was reversed by 4 x 10(-4) M L-arginine but not by 4 x 10(-4) M D-arginine. NG-nitro L-arginine (10(-4) M) did not affect the relaxation caused by sodium nitroprusside (10(-6) M). Vasoactive intestinal polypeptide antibody 7913 (1:160 dilution) partly inhibited isoprenaline-induced relaxation. This inhibition was greater on the response to the higher isoprenaline concentration (5 x 10(-6) M) than to the lower concentration (10(-6) M). The combination of vasoactive intestinal polypeptide antibody and NG-nitro L-arginine significantly enhanced the inhibition on 10(-6) M isoprenaline action. These results suggest that nitric oxide and vasoactive intestinal polypeptide may partly contribute to the relaxation induced by isoprenaline in the mouse gastric fundus precontracted with carbachol.

Keywords
isoprenaline
N<sub>G<sub>-nitro L-arginine(L-NOARG)
L-arginine(L-ARG)
D-arginine(D-ARG)
vasoactive intestinal polypeptide (VIP) antibody 7913
isolated mouse gastric fundus
Amo Type
Article
Published Date
1995-10
Publication Title
Acta Medica Okayama
Volume
volume49
Issue
issue5
Publisher
Okayama University Medical School
Start Page
231
End Page
236
ISSN
0386-300X
NCID
AA00508441
Content Type
Journal Article
language
英語
File Version
publisher
Refereed
True
PubMed ID
Web of Sience KeyUT