1. The role of adenosine in up-regulation of p38 MAPK and ERK during limb ischemic preconditioning-induced brain ischemic tolerance.
- Author
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Yuan Q, Jia HX, Li SQ, Xiao-Zhang, Wu YJ, Feng L, Liu XL, Sun XC, and Li WB
- Subjects
- Animals, Brain Ischemia therapy, CA1 Region, Hippocampal drug effects, CA1 Region, Hippocampal metabolism, MAP Kinase Signaling System, Male, Purinergic P1 Receptor Antagonists pharmacology, Rats, Rats, Wistar, Receptor, Adenosine A1 metabolism, Transcriptional Activation, Up-Regulation drug effects, Xanthines pharmacology, Adenosine metabolism, Brain Ischemia metabolism, Extremities blood supply, Ischemic Preconditioning methods, p38 Mitogen-Activated Protein Kinases metabolism
- Abstract
Our previous studies have demonstrated that limb ischemic preconditioning (LIP) induced brain ischemic tolerance and up-regulated the expression of p38 MAPK and ERK in the hippocampal CA1 region in rats. The present study was undertaken to investigate the role of adenosine in brain protection and up-regulation of p38 MAPK and ERK induced by LIP. It was found that adenosine A1 receptor antagonist DPCPX dose-dependently inhibited the protective effect of LIP. The up-regulation of p38 MAPK and ERK induced by LIP could be blocked by DPCPX. Furthermore, we observed the effect of adenosine on the brain ischemia. The results showed that pre-administration of adenosine could partly mimic the neuroprotective effect on the brain, up-regulate the expression of p38 MAPK and ERK. Based on the above results, it can be concluded that adenosine participated in brain protection and up-regulation of the expression of p38 MAPK and ERK during the induction of brain ischemic tolerance after LIP., (Copyright © 2018. Published by Elsevier B.V.)
- Published
- 2019
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