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Attenuation of stress-induced gastrointestinal motility disorder by gentiopicroside, from Gentiana macrophylla Pall.

Abstract：

AIM:The current study was designed to explore the mechanism of the prokinetic activity of Gentiopicroside (Ge), from Gentiana macrophylla Pall which is widely used to strengthen gastric motility in clinic. METHODS:Gastrointestinal motility disorder rats were induced by stress stimulation and the rats were treated with Ge. The functions of gastric emptying and intestinal propelling were measured after blood was obtained to assay the levels of plasmatic motilin (MTL), vasoactive intestinal peptide (VIP), somatostatin (SST), gastrin (GAS), neurotensin (NT) and substance of P (SP). The expressions of MTL receptor (MTLR), VIP receptor 2 (VIPR2) and SST receptor 2 (SSTR2) were measured also. In addition, an isolated guinea pig ileum was applied to evaluate the influences of Ge on M-R, H1-R, 5-HT4-R and D-R in vitro. RESULTS:Ge increased gastric emptying and intestinal propelling obviously. It also decreased the level of SST and increased GAS in plasma significantly. Moreover, it promoted the expressions of MTLR in gastric antrum, duodenum, jejunum and ileum, and restrained the expression of VIPR2 in duodenum. Piboserod and loratadine had no obvious restrain to Ge' exciting ileum effect and Ge also didn't affect dopamine paralyzing ileum. However, Ge failed to improve the hypofunction of guinea pigs ileums pre-treated with atropine sulfate. CONCLUSION:The mechanisms of Ge' prokinetic effect were associated with modulating the levels of SST and GAS in plasma, raising the expressions of MTLR in gastric antrum, duodenum, ileum and jejunum, reducing the expression of VIPR2 in duodenum and activating M-R.

journal_name

Fitoterapia

journal_title

Fitoterapia

authors

Ruan M,Yu B,Xu L,Zhang L,Long J,Shen X

doi

10.1016/j.fitote.2015.04.015

subject

Has Abstract

pub_date

2015-06-01 00:00:00

pages

265-76

eissn

0367-326X

issn

1873-6971

pii

S0367-326X(15)00105-7

journal_volume

103

pub_type

杂志文章

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