PMID- 18799798 OWN - NLM STAT- MEDLINE DCOM- 20081216 LR - 20161124 IS - 1521-0111 (Electronic) IS - 0026-895X (Linking) VI - 74 IP - 6 DP - 2008 Dec TI - Overexpression of heme oxygenase-1 protects dopaminergic neurons against 1-methyl-4-phenylpyridinium-induced neurotoxicity. PG - 1564-75 LID - 10.1124/mol.108.048611 [doi] AB - Heme oxygenase-1 (HO-1) is up-regulated in response to oxidative stress and catalyzes the degradation of pro-oxidant heme to carbon monoxide (CO), iron, and bilirubin. Intense HO-1 immunostaining in the Parkinsonian brain is demonstrated, indicating that HO-1 may be involved in the pathogenesis of Parkinsonism. We here locally injected adenovirus containing human HO-1 gene (Ad-HO-1) into rat substantia nigra concomitantly with 1-methyl-4-phenylpyridinium (MPP(+)). Seven days after injection of MPP(+) and Ad-HO-1, the brain was isolated for immunostaining and for measurement of dopamine content and inflammatory cytokines. It was found that overexpression of HO-1 significantly increased the survival rate of dopaminergic neurons; reduced the production of tumor necrosis factor alpha (TNF-alpha) and interleukin-1beta (IL-1beta) in substantia nigra; antagonized the reduction of striatal dopamine content induced by MPP(+); and also up-regulated brain-derived neurotrophic factor (BDNF) and glial cell line-derived neurotrophic factor (GDNF) expression in substantia nigra. Apomorphine-induced rotation after MPP(+) treatment was also inhibited by Ad-HO-1. On the other hand, inhibition of HO enzymatic activity by zinc protoporphyrin-IX facilitated the MPP(+)-induced rotatory behavior and enhanced the reduction of dopamine content. HO-1 overexpression also protected dopaminergic neurons against MPP(+)-induced neurotoxicity in midbrain neuron-glia cocultures. Overexpression of HO-1 increased the expression of BDNF and GDNF in astrocytes and BDNF in neurons. Our results indicate that HO-1 induction exerts neuroprotection both in vitro and in vivo. Pharmacological or genetic approaches targeting HO-1 may represent a promising and novel therapeutic strategy in treating Parkinsonism. FAU - Hung, Shih-Ya AU - Hung SY AD - Pharmacological Institute, College of Medicine, National Taiwan University, Taipei, Taiwan. FAU - Liou, Houng-Chi AU - Liou HC FAU - Kang, Kai-Hsiang AU - Kang KH FAU - Wu, Ruey-Meei AU - Wu RM FAU - Wen, Chun-Chiang AU - Wen CC FAU - Fu, Wen-Mei AU - Fu WM LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20080917 PL - United States TA - Mol Pharmacol JT - Molecular pharmacology JID - 0035623 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Glial Cell Line-Derived Neurotrophic Factor) RN - 0 (Interleukin-1beta) RN - 0 (RNA, Messenger) RN - 0 (Tumor Necrosis Factor-alpha) RN - EC 1.14.14.18 (Heme Oxygenase-1) RN - R865A5OY8J (1-Methyl-4-phenylpyridinium) RN - VTD58H1Z2X (Dopamine) SB - IM MH - *1-Methyl-4-phenylpyridinium MH - Adenoviridae/genetics MH - Animals MH - Brain-Derived Neurotrophic Factor/biosynthesis/genetics MH - Cell Death MH - Cells, Cultured MH - Coculture Techniques MH - Dopamine/*metabolism MH - Enzyme Induction MH - Glial Cell Line-Derived Neurotrophic Factor/biosynthesis/genetics MH - Heme Oxygenase-1/*biosynthesis/genetics MH - Humans MH - Interleukin-1beta/metabolism MH - Neuroglia/pathology MH - Neurons/*pathology MH - Parkinson Disease, Secondary/chemically induced/enzymology/*pathology MH - RNA, Messenger/biosynthesis MH - Rats MH - Rats, Wistar MH - Tumor Necrosis Factor-alpha/metabolism EDAT- 2008/09/19 09:00 MHDA- 2008/12/17 09:00 CRDT- 2008/09/19 09:00 PHST- 2008/09/19 09:00 [pubmed] PHST- 2008/12/17 09:00 [medline] PHST- 2008/09/19 09:00 [entrez] AID - mol.108.048611 [pii] AID - 10.1124/mol.108.048611 [doi] PST - ppublish SO - Mol Pharmacol. 2008 Dec;74(6):1564-75. doi: 10.1124/mol.108.048611. Epub 2008 Sep 17.