PMID- 25082329 OWN - NLM STAT- MEDLINE DCOM- 20150708 LR - 20151119 IS - 1097-4547 (Electronic) IS - 0360-4012 (Linking) VI - 93 IP - 1 DP - 2015 Jan TI - Postconditioning mitigates cell death following oxygen and glucose deprivation in PC12 cells and forebrain reperfusion injury in rats. PG - 140-8 LID - 10.1002/jnr.23460 [doi] AB - Postconditioning mitigates ischemia-induced cellular damage via a modified reperfusion procedure. Mitochondrial permeability transition (MPT) is an important pathophysiological change in reperfusion injury. This study explores the role of MPT modulation underlying hypoxic postconditioning (HPoC) in PC12 cells and studies the neuroprotective effects of ischemic postconditioning (IPoC) on rats. Oxygen-glucose deprivation (OGD) was performed for 10 hr on PC12 cells. HPoC was induced by three cycles of 10-min reoxygenation/10-min rehypoxia after OGD. The MPT inhibitor N-methyl-4-isoleucine cyclosporine (NIM811) and the MPT inducer carboxyatractyloside (CATR) were administered to selective groups before OGD. Cellular death was evaluated by flow cytometry and Western blot analysis. JC-1 fluorescence signal was used to estimate the mitochondrial membrane potential ( big up tri, openPsim ). Transient global cerebral ischemia (tGCI) was induced via the two-vessel occlusion and hypotension method in male Sprague Dawley rats. IPoC was induced by three cycles of 10-sec reperfusion/10-sec reocclusion after index ischemia. HPoC and NIM811 administration attenuated cell death, cytochrome c release, and caspase-3 activity and maintained big up tri, openPsim of PC12 cells after OGD. The addition of CATR negated the protection conferred by HPoC. IPoC reduced neuronal degeneration and cytochrome c release and cleaved caspase-9 expression of hippocampal CA1 neurons in rats after tGCI. HPoC protected PC12 cells against OGD by modulating the MPT. IPoC attenuated degeneration of hippocampal neurons after cerebral ischemia. CI - (c) 2014 Wiley Periodicals, Inc. FAU - Lin, Han-Chen AU - Lin HC AD - Department of Anatomy and Cell Biology, Medical College, National Taiwan University, Taipei, Taiwan. FAU - Narasimhan, Purnima AU - Narasimhan P FAU - Liu, Shin-Yun AU - Liu SY FAU - Chan, Pak H AU - Chan PH FAU - Lai, I-Rue AU - Lai IR LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140731 PL - United States TA - J Neurosci Res JT - Journal of neuroscience research JID - 7600111 RN - 0 (Fluoresceins) RN - 0 (Formazans) RN - 0 (Tetrazolium Salts) RN - 0 (fluoro jade) RN - 23305-68-2 (MTT formazan) RN - 9007-43-6 (Cytochromes c) RN - EC 3.4.22.- (Caspase 3) RN - IY9XDZ35W2 (Glucose) RN - S88TT14065 (Oxygen) SB - IM MH - Animals MH - Caspase 3/metabolism MH - Cell Death/drug effects MH - Cytochromes c/metabolism MH - Disease Models, Animal MH - Flow Cytometry MH - Fluoresceins MH - Formazans MH - Glucose/*metabolism MH - Hippocampus/pathology MH - *Ischemic Postconditioning MH - Male MH - Membrane Potential, Mitochondrial MH - Oxygen/*metabolism MH - PC12 Cells MH - Rats MH - Reperfusion Injury/*pathology MH - Tetrazolium Salts OTO - NOTNLM OT - hippocampus OT - hypoxia OT - mitochondrial permeability transition OT - neuronal ischemia OT - oxygen-glucose deprivation OT - postconditioning EDAT- 2014/08/02 06:00 MHDA- 2015/07/15 06:00 CRDT- 2014/08/02 06:00 PHST- 2014/03/11 00:00 [received] PHST- 2014/06/10 00:00 [revised] PHST- 2014/07/05 00:00 [accepted] PHST- 2014/08/02 06:00 [entrez] PHST- 2014/08/02 06:00 [pubmed] PHST- 2015/07/15 06:00 [medline] AID - 10.1002/jnr.23460 [doi] PST - ppublish SO - J Neurosci Res. 2015 Jan;93(1):140-8. doi: 10.1002/jnr.23460. Epub 2014 Jul 31.