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Article Publish Status: FREE
Abstract Title:

6-Shogaol, an active compound of ginger, protects dopaminergic neurons in Parkinson's disease models via anti-neuroinflammation.

Abstract Source:

Acta Pharmacol Sin. 2013 Sep ;34(9):1131-9. Epub 2013 Jul 1. PMID: 23811724

Abstract Author(s):

Gunhyuk Park, Hyo Geun Kim, Mi Sun Ju, Sang Keun Ha, Yongkon Park, Sun Yeou Kim, Myung Sook Oh

Article Affiliation:

Gunhyuk Park

Abstract:

AIM: 6-Shogaol [1-(4-hydroxy-methoxyphenyl)-4-decen-one], a pungent compound isolated from ginger, has shown various neurobiological and anti-inflammatory effects. The aim of this study was to examine the effects of 6-shogaol on neuroinflammatory-induced damage of dopaminergic (DA) neurons in Parkinson's disease (PD) models.

METHODS: Cultured rat mesencephalic cells were treated with 6-shogaol (0.001 and 0.01μmol/L) for 1 h, then with MPP(+)(10 μmol/L) for another 23 h. The levels of TNF-α and NO in medium were analyzed spectrophotometrically. C57/BL mice were administered 6-shogaol (10 mg·kg(-1)·d(-1), po) for 3 d, and then MPTP (30 mg/kg, ip) for 5 d. Seven days after the last MPTP injection, behavioral testings were performed. The levels of tyrosine hydroxylase (TH) and macrophage antigen (MAC)-1 were determined with immunohistochemistry. The expression of iNOS and COX-2 was measured using RT PCR.

RESULTS: In MPP(+)-treated rat mesencephalic cultures, 6-shogaol significantly increased the number of TH-IR neurons and suppressed TNF-α and NO levels. In C57/BL mice, treatment with 6-shogaol reversed MPTP-induced changes in motor coordination and bradykinesia. Furthermore, 6-shogaol reversed MPTP-induced reductions in TH-positive cell number in the substantia nigra pars compacta (SNpc) and TH-IR fiber intensity in stratum (ST).Moreover, 6-shogaol significantly inhibited the MPTP-induced microglial activation and increases in the levels of TNF-α, NO, iNOS, and COX-2 in both SNpc and ST.

CONCLUSION: 6-Shogaol exerts neuroprotective effects on DA neurons in in vitro and in vivo PD models.

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