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Abstract Title:

Baicalein inhibitsα-synuclein oligomer formation and prevents progression of α-synuclein accumulation in a rotenone mouse model of Parkinson's disease.

Abstract Source:

Biochim Biophys Acta. 2016 Oct ;1862(10):1883-90. Epub 2016 Jul 15. PMID: 27425033

Abstract Author(s):

Qi Hu, Vladimir N Uversky, Mengyang Huang, Huicong Kang, Feng Xu, Xiaoyan Liu, Lifei Lian, Qiming Liang, Hong Jiang, Anding Liu, Cuntai Zhang, Francisco Pan-Montojo, Suiqiang Zhu

Article Affiliation:

Qi Hu

Abstract:

Parkinson's disease (PD) is a progressive neurodegenerative disease.α-Synuclein (α-syn) oligomers play a critical role in the progression of PD. Baicalein, a typical flavonoid compound, can inhibit the formation of the α-syn oligomers, and disaggregate existing α-syn oligomers in vitro. However, whether baicalein could inhibit or disaggregate α-syn oligomers invivo has not been investigated. Therefore, this study was designed to investigate the inhibitory effects of baicalein on α-syn oligomers in vivo and to explore the possible mechanisms of such inhibition. A chronic PD mouse model was created by continuous intragastric administration of rotenone (5mg/kg, 12weeks). Baicalein (100mg/kg) was intraperitoneally injected from 7week to 12week. Our result showed that the amount of α-syn, changes in the levels of the striatal neurotransmitters, and the behavioral changes found in the chronic PD mouse model were prevented after the baicalein injections. Although baicalein did not decrease α-syn mRNA expression, α-syn oligomers were significantly decreased in the ileum, thoracic spinal cord, and midbrain. Furthermore, transmission electron microscopy analysis showed that baicalein could prevent α-syn monomers from the oligomer formation in vitro. Taken together, these results suggest that baicalein could prevent the progression of α-syn accumulation in PD mouse model partly by inhibiting formation of the α-syn oligomers.

Study Type : Animal Study

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Sayer Ji
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