PMID- 23339028 OWN - NLM STAT- MEDLINE DCOM- 20140414 LR - 20181202 IS - 1099-1573 (Electronic) IS - 0951-418X (Linking) VI - 27 IP - 10 DP - 2013 Oct TI - Inhibiting roles of berberine in gut movement of rodents are related to activation of the endogenous opioid system. PG - 1564-71 LID - 10.1002/ptr.4926 [doi] AB - Although Berberine (BER) is popular in treating gastrointestinal (GI) disorders, its mechanisms are not clear yet. In order to investigate the effects and possible mechanism of BER on GI motility in rodents, we first explored GI motility by recording the myoelectrical activity of jejunum and colon in rats, and upper GI transit with a charcoal marker in mice. Then, the plasma levels of gastrin, motilin, somatostatin and glucagon-like-peptide-1 (Glp-1) were measured by ELISA or radioimmunoassay (RIA). Furthermore, endogenous opioid-peptides (beta-endorphin, dynorphin-A, met-enkephalin) were detected by RIA after treatment with BER. Our results showed that BER concentration-dependently inhibited myoelectrical activity and GI transit, which can be antagonized by opioid-receptor antagonists to different extents. The elevated somatostatin and Glp-1, and decreased gastrin and motilin in plasma, which were caused by BER application, also could be antagonized by the opioid-receptor antagonists. Additionally, plasma level of beta-endorphin, but not dynorphin-A and met-enkephalin, was increased by applying BER. Taken together, these studies show that BER plays inhibiting roles on GI motility and up-regulating roles on somatostatin, Glp-1 and down-regulating roles on gastrin, motilin. The pharmacological mechanisms of BER on GI motility and plasma levels of GI hormones were discovered to be closely related to endogenous opioid system. CI - Copyright (c) 2013 John Wiley & Sons, Ltd. FAU - Feng, Yajing AU - Feng Y AD - Department of Pathophysiology, Institute of Digestive Disease, Tongji University School of Medicine, Shanghai, 200092, China. FAU - Li, Yongyu AU - Li Y FAU - Chen, Chunqiu AU - Chen C FAU - Lin, Xuhong AU - Lin X FAU - Yang, Yuehua AU - Yang Y FAU - Cai, Haidong AU - Cai H FAU - Lv, Zhongwei AU - Lv Z FAU - Cao, Minghua AU - Cao M FAU - Li, Kun AU - Li K FAU - Xu, Jing AU - Xu J FAU - Li, Sainan AU - Li S FAU - Jia, Yijun AU - Jia Y LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130121 PL - England TA - Phytother Res JT - Phytotherapy research : PTR JID - 8904486 RN - 0 (Gastrins) RN - 0 (Gastrointestinal Hormones) RN - 0 (Opioid Peptides) RN - 0I8Y3P32UF (Berberine) RN - 51110-01-1 (Somatostatin) RN - 52906-92-0 (Motilin) RN - 58569-55-4 (Enkephalin, Methionine) RN - 60617-12-1 (beta-Endorphin) RN - 74913-18-1 (Dynorphins) RN - 89750-14-1 (Glucagon-Like Peptide 1) SB - IM MH - Animals MH - Berberine/*pharmacology MH - Colon/drug effects/physiology MH - Dynorphins/physiology MH - Enkephalin, Methionine/physiology MH - Gastrins/physiology MH - Gastrointestinal Hormones/*physiology MH - Gastrointestinal Motility/*drug effects MH - Gastrointestinal Tract/*drug effects/physiology MH - Gastrointestinal Transit/drug effects/physiology MH - Glucagon-Like Peptide 1/physiology MH - Jejunum/drug effects/physiology MH - Male MH - Mice MH - Mice, Inbred BALB C MH - Motilin/physiology MH - Opioid Peptides/*physiology MH - Rats MH - Rats, Sprague-Dawley MH - Somatostatin/physiology MH - beta-Endorphin/physiology OTO - NOTNLM OT - Berberine OT - endogenous opioid system OT - gastrointestinal hormones OT - gastrointestinal motility EDAT- 2013/01/23 06:00 MHDA- 2014/04/15 06:00 CRDT- 2013/01/23 06:00 PHST- 2012/10/29 00:00 [received] PHST- 2012/12/06 00:00 [revised] PHST- 2012/12/19 00:00 [accepted] PHST- 2013/01/23 06:00 [entrez] PHST- 2013/01/23 06:00 [pubmed] PHST- 2014/04/15 06:00 [medline] AID - 10.1002/ptr.4926 [doi] PST - ppublish SO - Phytother Res. 2013 Oct;27(10):1564-71. doi: 10.1002/ptr.4926. Epub 2013 Jan 21.