PMID- 15153095 OWN - NLM STAT- MEDLINE DCOM- 20040706 LR - 20181113 IS - 0014-2956 (Print) IS - 1432-1033 (Electronic) IS - 0014-2956 (Linking) VI - 271 IP - 11 DP - 2004 Jun TI - Oxidative neuronal injury. The dark side of ERK1/2. PG - 2060-6 AB - The extracellular signal regulated protein kinases (ERK1/2) are essential for normal development and functional plasticity of the central nervous system. However, a growing number of recent studies in models of cerebral ischemia, brain trauma and neurodegenerative diseases implicate a detrimental role for ERK1/2 signaling during oxidative neuronal injury. Neurons undergoing oxidative stress-related injuries typically display a biphasic or sustained pattern of ERK1/2 activation. A variety of potential targets of reactive oxygen species and reactive nitrogen species could contribute to ERK1/2 activation. These include cell surface receptors, G proteins, upstream kinases, protein phosphatases and proteasome components, each of which could be direct or indirect targets of reactive oxygen or nitrogen species, thereby modulating the duration and magnitude of ERK1/2 activation. Neuronal oxidative stress also appears to influence the subcellular trafficking and/or localization of activated ERK1/2. Differences in compartmentalization of phosphorylated ERK1/2 have been observed in diseased or injured human neurons and in their respective animal and cell culture model systems. We propose that differential accessibility of ERK1/2 to downstream targets, which is dictated by the persistent activation of ERK1/2 within distinct subcellular compartments, underlies the neurotoxic responses that are driven by this kinase. FAU - Chu, Charleen T AU - Chu CT AD - Department of Pathology, Division of Neuropathology, University of Pittsburgh School of Medicine, Room A-516 UPMC Presbyterian, 200 Lothrop Street, Pittsburgh, PA 15213, USA. chu@np.awing.upmc.edu FAU - Levinthal, David J AU - Levinthal DJ FAU - Kulich, Scott M AU - Kulich SM FAU - Chalovich, Elisabeth M AU - Chalovich EM FAU - DeFranco, Donald B AU - DeFranco DB LA - eng GR - F30 NS 43824/NS/NINDS NIH HHS/United States GR - F30 NS043824/NS/NINDS NIH HHS/United States GR - R01 NS040817/NS/NINDS NIH HHS/United States GR - R01 NS 38319/NS/NINDS NIH HHS/United States GR - R01 NS038319/NS/NINDS NIH HHS/United States GR - R01 NS 40817/NS/NINDS NIH HHS/United States PT - Journal Article PT - Research Support, U.S. Gov't, P.H.S. PT - Review PL - England TA - Eur J Biochem JT - European journal of biochemistry JID - 0107600 RN - 0 (Enzyme Inhibitors) RN - 0 (Neuroprotective Agents) RN - EC 2.7.11.24 (Mitogen-Activated Protein Kinase 1) RN - EC 2.7.11.24 (Mitogen-Activated Protein Kinase 3) RN - EC 2.7.11.24 (Mitogen-Activated Protein Kinases) SB - IM MH - Animals MH - Brain Ischemia/enzymology MH - Cell Death MH - Cell Nucleus/enzymology MH - Central Nervous System Diseases/enzymology/pathology MH - Enzyme Inhibitors/pharmacology MH - *MAP Kinase Signaling System MH - Mitogen-Activated Protein Kinase 1/analysis/antagonists & inhibitors/*physiology MH - Mitogen-Activated Protein Kinase 3 MH - Mitogen-Activated Protein Kinases/analysis/antagonists & inhibitors/*physiology MH - Neurodegenerative Diseases/enzymology MH - Neurons/cytology/*enzymology MH - Neuroprotective Agents/pharmacology MH - Oxidation-Reduction MH - *Oxidative Stress PMC - PMC1899467 MID - NIHMS20816 EDAT- 2004/05/22 05:00 MHDA- 2004/07/09 05:00 PMCR- 2007/06/26 CRDT- 2004/05/22 05:00 PHST- 2004/05/22 05:00 [pubmed] PHST- 2004/07/09 05:00 [medline] PHST- 2004/05/22 05:00 [entrez] PHST- 2007/06/26 00:00 [pmc-release] AID - EJB4132 [pii] AID - 10.1111/j.1432-1033.2004.04132.x [doi] PST - ppublish SO - Eur J Biochem. 2004 Jun;271(11):2060-6. doi: 10.1111/j.1432-1033.2004.04132.x.