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Abstract Title:

Naringin Exhibits Neuroprotection Against Rotenone-Induced Neurotoxicity in Experimental Rodents.

Abstract Source:

Neuromolecular Med. 2020 Jan 8. Epub 2020 Jan 8. PMID: 31916219

Abstract Author(s):

Debapriya Garabadu, Nidhi Agrawal

Article Affiliation:

Debapriya Garabadu

Abstract:

Parkinson's disease (PD) is a neurodegenerative disease that is accompanied with the loss of dopaminergic neurons in the substantia nigra pars compacta which subsequently leads to a reduction in the dopamine level in the striatum. The flavonoids are gaining critical attention in the management of PD due to the toxic effects of the synthetic drugs. Naringin, a potent flavonoid, exerts neuroprotective activity against experimental animal models of PD. It also exhibits protective activity against rotenone-induced neurotoxicity in cell line studies. Therefore, the present study was designed to evaluate the therapeutic potential of naringin against rotenone-induced animal model of PD. The rotenone was injected through intracerebroventricular route into substantia nigra pars compacta (SNpc) to induce PD-like manifestations in the male rats. The behavioral deficits of the animals due to dopaminergic toxicity were evaluated in actophotometer, OFT, bar catalepsy, narrow beam walk, rota-rod, grip strength and foot print analysis. Naringin-attenuated rotenone-induced behavioral abnormalities in the experimental rats. Further, naringin reduced the rotenone-induced dopaminergic toxicity in striatum and SNpc the animals. At the sub-cellular level, naringin attenuated the rotenone-induced decrease in the mitochondrial function, integrity and bioenergetics in the SNpc of the animals. Furthermore, naringin reduced the rotenone-induced mitochondria-dependent apoptosis in the rat SNpc. However, Trigonelline significantly abolished the therapeutic effects of naringin on behavioral, biochemical and molecular observations in rotenone-induced PD-like animals. These observations indicate that naringin may exert neuroprotective activity against rotenone-induced toxicity in the animals possibly through Nrf2-mediated pathway. Thus, it can be presumed that naringin could be an alternative option in the management of PD.

Study Type : Animal Study

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