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The overall goal of this study was to determine the role of Rac1 in POSH/MLK/JNK signaling and delayed neuronal cell death following cerebral ischemia. Temporal studies revealed that Rac1 GTPase activation was significantly elevated in hippocampus CA1 at 10 min to 72 h after cerebral ischemia reperfusion, with peak levels 30 min to 6 h after reperfusion. Total Rac1 protein levels were not significantly...
Previous work has demonstrated that ischemic preconditioning neuroprotection is associated with inhibition of JNK pathway activation. The present study was designed to examine the hypothesis that the suppression of JNK3 activation by preconditioning is mediated by NMDA receptors and crosstalk between ERK1/2 and JNK3. Preconditioning (3min ischemia) 2 days before global cerebral ischemia (8-min) markedly...
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