Erythromycin inhibits rabbit pyloric smooth muscle through neuronal motilin receptors.
Erythromycin inhibits rabbit pyloric smooth muscle through neuronal motilin receptors.
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红霉素通过神经元胃动素受体抑制兔幽门平滑肌。
DOI:
10.1053/gast.1996.v111.pm8780573
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发表时间:
1996
期刊:
影响因子:
29.4
通讯作者:
Ryan,JP
中科院分区:
文献类型:
--
作者:
Parkman,HP;Pagano,AP;Ryan,JP
BACKGROUND & AIMSErythromycin's effect in accelerating gastric emptying is attributed primarily to increased antral contractility. The aim of this study was to characterize erythromycin's effect on pyloric muscle.METHODSRabbit pyloric muscle strips were studied in vitro.RESULTSPyloric muscle strips developed spontaneous phasic contractions with a frequency of 1.9 +/- 0.1 contractions per minute. Erythromycin and motilin had dose-dependent inhibitory effects on pyloric muscle. At the maximal effective dose (50 mumol/L), erythromycin caused cessation of spontaneous contractions for 1.8 +/- 0.2 minutes, decreasing the initial 2-minute motility index to 35% +/- 9% (P < 0.01) of basal. In the presence of tetrodotoxin, both erythromycin and motilin increased pyloric contractility. Motilin tachyphylaxis both in the presence or absence of tetrodotoxin abolished the effects of erythromycin. The inhibitory effect of erythromycin was decreased by NG-nitro-L-arginine methyl ester and the vasoactive intestinal peptide antagonist [4-Chloro-D-Phe6, Leu17]vasoactive intestinal peptide.CONCLUSIONSThese studies suggest that motilin receptors are present on both pyloric muscle and inhibitory neurons to pyloric muscle, that the primary effect of erythromycin on the pylorus is mediated by activating motilin receptors on inhibitory motor neurons, and that both nitric oxide and vasoactive intestinal peptide may mediate the inhibitory effect of erythromycin. (Gastroenterology 1996 Sep;111(3):682-90)
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影响因子:
29.4
作者:
S. Bruley des Varannes;Véronique Parys;A. Ropert;J. Chayvialle;C. Rozé;J. Galmiche
通讯作者:
J. Galmiche
影响因子:
--
作者:
C. Prather;Michael Camilleri;G. Thomforde;Lee A. Forstrom;A. Zinsmeister
通讯作者:
A. Zinsmeister
影响因子:
64.8
作者:
J. Alumets;J. Fahrenkrug;R. Håkanson;O. S. D. Muckadell;F. Sundler;R. Uddman
通讯作者:
R. Uddman
DOI:
10.1152/ajpgi.1990.259.1.g125
发表时间:
1990
期刊:
The American journal of physiology
影响因子:
--
作者:
Vogalis,F;Sanders,KM
通讯作者:
Sanders,KM