γ-aminobutyric acid-mediated neurotransmission in cerebellar–hypothalamic circuit attenuates gastric mucosal injury induced by ischemia-reperfusion
Article first published online: 23 DEC 2012
© 2012 Blackwell Publishing Ltd
Neurogastroenterology & Motility
Volume 25, Issue 4, pages 313–e249, April 2013
How to Cite
Du, D. S., Zhu, T., Ren, S. T., Xie, G. L., Li, S. B., Chu, D. C., Liu, X. T., Liu, M., Ma, X. B., Zhou, M. H., Zhu, D. N., Deng, Z. X. and Wang, J. (2013), γ-aminobutyric acid-mediated neurotransmission in cerebellar–hypothalamic circuit attenuates gastric mucosal injury induced by ischemia-reperfusion. Neurogastroenterology & Motility, 25: 313–e249. doi: 10.1111/nmo.12062
- Issue published online: 22 MAR 2013
- Article first published online: 23 DEC 2012
- Received: 9 April 2012 Accepted for publication: 15 November 2012
- apoptosis and proliferation;
- Bcl-2 and Bax;
- cerebellar fastigial nucleus;
- gastric ischemia-reperfusion injury
Background Excessive greater splanchnic nerve (GSN) activation contributes to the progression of gastric ischemia-reperfusion (GI-R) injury. This study was designed to investigate the protective mechanism of cerebellar fastigial nucleus (FN) stimulation against GI-R injury.
Methods The GI-R injury model was induced in rats by clamping the celiac artery for 30 min, and then reperfusion for 30 min, 1, 3, 6, or 24 h, respectively.
Key Results Microinjection of l-Glu (3, 6, 12 μg) into the FN dose-dependently attenuated GI-R injury and GSN activity. In addition, there was an enhancement of gastric mucosal blood flow in GI-R rats. Pretreatment with the glutamic acid decarboxylase antagonist into the FN, the GABAA receptor antagonist into the lateral hypothalamic area or lesion of superior cerebellar peduncle all reversed the protective effects of the FN stimulation. Furthermore, the FN stimulation reduced the TUNEL-positive gastric mucosal cell and Bax-positive gastric mucosal cell in GI-R rats.
Conclusions & Inferences These results indicate that the protective effects of the FN stimulation against GI-R injury may be mediated by attenuation of the excessive GSN activation, gastric mucosal cell apoptosis, and Bax expression in GI-R rats.