Data/hora: 16/06/2024 10:38:11

Provedor de dados: 	17	
País: 	United Kingdom	
Título: 	Striatal neuroinflammation promotes parkinsonism in rats	
Autores: 	Dong-Young Choi; Randy Hunter; Mei Liu; Wayne Cass; Jignesh Pandya; Patrick Sullivan; Eun-Joo Shin; Hyoung-Chun Kim; Don Gash; Guoying Bing.	
Data: 	2008-06-12	
Ano: 	2008	
Palavras-chave: 	Neuroscience.	
Resumo: 	The specific role of neuroinflammation in the pathogenesis of Parkinson&amp;#x27;s disease remains to be fully elucidated. By infusing lipopolysaccharide (LPS) into the striatum, we investigated the effect of neuroinflammation on the dopamine nigrostriatal pathway. Here, we report that LPS-induced neuroinflammation in the striatum causes progressive degeneration of the dopamine nigrostriatal system, which is accompanied by motor impairments resembling parkinsonism. Our results indicate that neurodegeneration is associated with defects in the mitochondrial respiratory chain related to extensive S-nitrosylation/nitration of mitochondrial proteins. Mitochondrial injury was prevented by treatment of L-N^6^-(l-iminoethyl)-lysine, an inducible nitric oxide synthase (iNOS) inhibitor, suggesting that iNOS-derived NO is responsible for mitochondrial dysfunction. Furthermore, the nigral dopamine neurons exhibited intracytoplasmic [alpha]-synuclein and ubiquitin accumulation. These results demonstrate that degeneration of nigral dopamine neurons by neuroinflammation is associated with mitochondrial malfunction induced by NO-mediated S-nitrosylation/nitration of mitochondrial proteins.	
Tipo: 	Manuscript	
Identificador: 	http://precedings.nature.com/documents/1970/version/1

oai:nature.com:10101/npre.2008.1970.1

http://hdl.handle.net/10101/npre.2008.1970.1	
Fonte: 	Nature Precedings	
Fonte: 	Creative Commons Attribution 3.0 License