Referenced in: none

Automatically associated channels: TRP , TRPM , TRPM7

Title: Influence of lactuside B on the expression of AQP4 and TRPM7 mRNAs in the cerebral cortex after cerebral ischemia injury.

Authors: H-Q Zhan, P-F Li, S-Y Li, F-L Yan, J Yang, R-L Liu, H-F Zhang

Journal, date & volume: Eur Rev Med Pharmacol Sci, 2014 , 18, 1151-7

PubMed link: http://www.ncbi.nlm.nih.gov/pubmed/24817288

Abstract
This study aimed to determine the effect of Lactuside B isolated from Pterocypsela alata on the expression of AQP4 and TRPM7 mRNAs after cerebral ischemic injury.Brain ischemia injury was established by occluding the MCA (middle cerebral artery) for 2 h, followed by reperfusion in rats. The neurologic deficit scores were used to determine the success of the model. All drugs were intraperitoneally administered once a day (5 ml/kg). Eight animals from each group were investigated for the Na+ level, and the others were examined for AQP4 and TRPM7 mRNA changes.Compared with the model group, the neurologic deficit scores and Na+ levels decreased in the lactuside B groups (p < 0.05 vs. p < 0.01). All lactuside B groups had significantly decreased AQP4 and TRPM7 mRNA expression compared with the model group (p < 0.05 vs. < 0.01). Dose dependence was observed between low and medium doses.Lactuside B protected against cerebral edema and nerve cell damage caused by cerebral ischemic injury by decreasing the expression of AQP4 and TRPM7 mRNAs in the cerebral cortex of rats.