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- W2094799995 abstract "Polygalae radix, the root of Polygala tenuifolia Willd, has commonly been used for the treatment of amnesia and anxiety in traditional Korean medicine. The aim of this study was to investigate its neuroprotective effects and possible mechanisms of action in models of Parkinson's disease. This study utilized a 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay, a reactive oxygen species (ROS) assay, a nitric oxide (NO) production assay, and a caspase-3 activity test as measures of cell viability in PC12 cells damaged by 6-hydroxydopamine (6-OHDA). The protective effects of PRE against 1-methyl-4-phenylpyridium (MPP+)-induced neurotoxicity were assessed in rat primary dopaminergic neurons and in a mouse PD model in which PRE was administered (100 mg/kg/day, 3 days, p.o.) before acute 1-mehtyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) toxicity. Finally, TH immunohistochemistry tests were conducted in the substantia nigra pars compacta (SNpc) and striatum (ST). PRE significantly inhibited 6-OHDA-induced cell damage at doses of 0.05–1 μg/ml with a maximal effect at 0.1 μg/ml. Caspase-3 activity and the production of ROS and NO were alleviated at 0.1 μg/ml. Also at this dose, PRE protected mesencephalic dopaminergic neurons from MPP+-induced toxicity. In an in vivo mouse model of PD, PRE protected dopaminergic neurons and fibers from MPTP-induced toxicity in the SNpc and ST. These results demonstrate that PRE has protective effects on dopaminergic neurons via its anti-oxidant and anti-apoptotic activity." @default.
- W2094799995 created "2016-06-24" @default.
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- W2094799995 date "2011-03-01" @default.
- W2094799995 modified "2023-10-17" @default.
- W2094799995 title "Polygalae radix inhibits toxin-induced neuronal death in the Parkinson's disease models" @default.
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- W2094799995 doi "https://doi.org/10.1016/j.jep.2010.12.030" @default.
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