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Neuroprotective Effects of San-Huang-Xie-Xin-Tang in the MPP(+)/MPTP Models of Parkinson's Disease In Vitro and In Vivo.

Abstract
San-Huang-Xie-Xin-Tang (SHXT), composed of Coptidis rhizoma, Scutellariae radix, and Rhei rhizoma, is a traditional Chinese medicine used for complementary and alternative therapy of cardiovascular and neurodegenerative diseases via its anti-inflammatory and antioxidative effects. The aim of this study is to investigate the protective effects of SHXT in the 1-methyl-4-phenylpyridinium (MPP(+))/1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) models of Parkinson's disease. Rat primary mesencephalic neurons and mouse Parkinson disease model were used in this study. Oxidative stress was induced by MPP(+) in vitro and MPTP in vivo. In MPP(+)-treated mesencephalic neuron cultures, SHXT significantly increased the numbers of TH-positive neurons. SHXT reduced apoptotic signals (cytochrome and caspase) and apoptotic death. MPP(+)-induced gp91(phox) activation and ROS production were attenuated by SHXT. In addition, SHXT increased the levels of GSH and SOD in MPP(+)-treated neurons. In MPTP animal model, SHXT markedly increased TH-positive neurons in the substantia nigra pars compacta (SNpc) and improved motor activity of mice. In conclusion, the present results reveal the evidence that SHXT possesses beneficial protection against MPTP-induced neurotoxicity in this model of Parkinson's disease via its antioxidative and antiapoptotic effects. SHXT might be a potentially alternative and complementary medicine for neuroprotection.
AuthorsYi-Ching Lo, Yu-Tzu Shih, Yu-Ting Tseng, Hung-Te Hsu
JournalEvidence-based complementary and alternative medicine : eCAM (Evid Based Complement Alternat Med) Vol. 2012 Pg. 501032 ( 2012) ISSN: 1741-4288 [Electronic] United States
PMID22474505 (Publication Type: Journal Article)

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