PMID- 12354300 OWN - NLM STAT- MEDLINE DCOM- 20021022 LR - 20220410 IS - 0022-3042 (Print) IS - 0022-3042 (Linking) VI - 82 IP - 6 DP - 2002 Sep TI - Proteomic identification of oxidatively modified proteins in Alzheimer's disease brain. Part II: dihydropyrimidinase-related protein 2, alpha-enolase and heat shock cognate 71. PG - 1524-32 AB - Alzheimer's disease (AD) is a neurodegenerative disorder in which oxidative stress has been implicated as an important event in the progression of the pathology. In particular, it has been shown that protein modification by reactive oxygen species (ROS) occurs to a greater extent in AD than in control brain, suggesting a possible role for oxidation-related decrease in protein function in the process of neurodegeneration. Oxidative damage to proteins, assessed by measuring the protein carbonyl content, is involved in several events such as loss in specific protein function, abnormal protein clearance, depletion of the cellular redox-balance and interference with the cell cycle, and, ultimately, neuronal death. The present investigation represents a further step in understanding the relationship between oxidative modification of protein and neuronal death in AD. Previously, we used our proteomics approach, which successfully substitutes for labor-intensive immunochemical analysis, to detect proteins and identified creatine kinase, glutamine synthase and ubiquitin carboxy-terminal hydrolase L-1 as specifically oxidized proteins in AD brain. In this report we again applied our proteomics approach to identify new targets of protein oxidation in AD inferior parietal lobe (IPL). The dihydropyrimidinase related protein 2 (DRP-2), which is involved in the axonal growth and guidance, showed significantly increased level in protein carbonyls in AD brain, suggesting a role for impaired mechanism of neural network formation in AD. Additionally, the cytosolic enzyme alpha-enolase was identified as a target of protein oxidation and is involved the glycolytic pathway in the pathological events of AD. Finally, the heat shock cognate 71 (HSC-71) revealed increased, but not significant, oxidation in AD brain. These results are discussed with reference to potential involvement of these oxidatively modified proteins in neurodegeneration in AD brain. FAU - Castegna, Alessandra AU - Castegna A AD - Department of Chemistry, Center of Membrane Sciences, University of Kentucky, Lexington, Kentucky 40506, USA. FAU - Aksenov, Michael AU - Aksenov M FAU - Thongboonkerd, Visith AU - Thongboonkerd V FAU - Klein, Jon B AU - Klein JB FAU - Pierce, William M AU - Pierce WM FAU - Booze, Rosemarie AU - Booze R FAU - Markesbery, William R AU - Markesbery WR FAU - Butterfield, D Allan AU - Butterfield DA LA - eng GR - 5 P50 AG-05144/AG/NIA NIH HHS/United States GR - AG-05119/AG/NIA NIH HHS/United States GR - AG-10836/AG/NIA NIH HHS/United States GR - AG-12423/AG/NIA NIH HHS/United States GR - R01 HL66358-01/HL/NHLBI NIH HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. PT - Research Support, U.S. Gov't, P.H.S. PL - England TA - J Neurochem JT - Journal of neurochemistry JID - 2985190R RN - 0 (HSC70 Heat-Shock Proteins) RN - 0 (HSP70 Heat-Shock Proteins) RN - 0 (HSPA8 protein, human) RN - 0 (Heat-Shock Proteins) RN - 0 (Intercellular Signaling Peptides and Proteins) RN - 0 (Nerve Tissue Proteins) RN - 0 (Proteins) RN - 0 (Proteome) RN - 0 (collapsin response mediator protein-2) RN - EC 4.2.1.11 (Phosphopyruvate Hydratase) SB - IM MH - Aged MH - Aged, 80 and over MH - Brain/*metabolism MH - Brain Chemistry MH - Electrophoresis, Gel, Two-Dimensional MH - Female MH - HSC70 Heat-Shock Proteins MH - *HSP70 Heat-Shock Proteins MH - Heat-Shock Proteins/analysis/*metabolism MH - Humans MH - Intercellular Signaling Peptides and Proteins MH - Male MH - Mass Spectrometry MH - Nerve Tissue Proteins MH - Oxidation-Reduction MH - Parietal Lobe/metabolism MH - Phosphopyruvate Hydratase/analysis/*metabolism MH - Proteins/analysis/*metabolism MH - Proteome EDAT- 2002/10/02 04:00 MHDA- 2002/10/31 04:00 CRDT- 2002/10/02 04:00 PHST- 2002/10/02 04:00 [pubmed] PHST- 2002/10/31 04:00 [medline] PHST- 2002/10/02 04:00 [entrez] AID - 1103 [pii] AID - 10.1046/j.1471-4159.2002.01103.x [doi] PST - ppublish SO - J Neurochem. 2002 Sep;82(6):1524-32. doi: 10.1046/j.1471-4159.2002.01103.x.