Abstract WP253: CaMKII Inhibition Protects Against Purkinje Cell Damage Following Global Cerebral Ischemia
2018
Introduction: Ischemic damage triggers glutamate excitotoxicity, resulting in neuronal cell death. Previous research has demonstrated that NMDA receptor activity triggers downstream calcium-dependent signaling pathways, specifically Ca2+/calmodulin-dependent protein kinase II (CaMKII). We hypothesize that Death Associated Protein Kinase I (DAPKI) and receptor interacting protein (RIP) are downstream of CaMKII, contributing to necroptosis. Focal and global ischemia studies have shown that inhibiting CaMKII is protective against hippocampal damage, but there is little known about cerebellar cell death mechanisms. The aim of this study is to examine the neuroprotective potential of inhibiting CaMKII in Purkinje cells using a global ischemia model. Methods: C57BL/6 male adult mice were subjected to 8 minutes of cardiac arrest and cardiopulmonary resuscitation (CA/CPR). Mice were randomized to tat-CN19o or control peptide (tat-SCR), administered 30 minutes after CA/CPR, and cerebellar injury analyzed 7 days af...
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