Abstract
Rotenone is involved in the degeneration of dopaminergic neurons, and curcumin may prevent or effectively slow the progression of Parkinson’s disease (PD). Previous research has shown that the naturally occurring phenolic compound curcumin can reduce inflammation and oxidation, making it a potential therapeutic agent for neurodegenerative diseases. The present study involves investigation of rotenone-induced histological changes in the brain area, hippocampus using Nissl staining after 35 day of subcutaneous injection of rotenone in adult male rats. We sought to determine whether curcumin could protect against rotenone-induced dopaminergic neurotoxicity in a rat model by in vivo electrical recording from Substantia nigra pars compacta (SNc). Curcumin treatment significantly improved electrical activity of neurons in the SNc of rotenone-induced PD model rats. The pattern of histological alterations corresponds with electrophysiological manifestations.
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Study Concept and Design: L.D., K.S.,V.S. Acquisition of Data: L.D., K.S.. Analysis and Interpretation of the Data: L.D., K.S., Drafting of the Manuscript: L.D., K.S., L.H., L.M., V.S., S.B.
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The experimental protocol corresponded to the conditions of the European Communities Council Directive (2010/63/ UE) and it was approved by the Ethics committee of the Yerevan State Medical University after Mkhitar Heratsi (Approval code-N4 IRB APROVAL, November 15, 2018).
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Darbinyan, L.V., Simonyan, K.V., Hambardzumyan, L.E. et al. Protective effect of curcumin against rotenone-induced substantia nigra pars compacta neuronal dysfunction. Metab Brain Dis 37, 1111–1118 (2022). https://doi.org/10.1007/s11011-022-00941-6
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DOI: https://doi.org/10.1007/s11011-022-00941-6