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Published on: October 26, 2010
Edaravone guards dopamine neurons in a rotenone model for Parkinson's disease
Nian Xiong1, Jing Xiong, Ghanshyam Khare
1Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei, China.
Abstract:
3-methyl-1-phenyl-2-pyrazolin-5-one (edaravone), an effective free radical scavenger, provides neuroprotection in stroke models and patients. In this study, we investigated its neuroprotective effects in a chronic rotenone rat model for Parkinson's disease. Here we showed that a five-week treatment with edaravone abolished rotenone's activity to induce catalepsy, damage mitochondria and degenerate dopamine neurons in the midbrain of rotenone-treated rats. This abolishment was attributable at least partly to edaravone's inhibition of rotenone-induced reactive oxygen species production or apoptotic promoter Bax expression and its up-regulation of the vesicular monoamine transporter 2 (VMAT2) expression. Collectively, edaravone may provide novel clinical therapeutics for PD.
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