Attenuation of rotenone-induced mitochondrial oxidative damage and neurotoxicty in drosophila melanogaster supplemented with creatine

Hosamani, R. and Ramesh, S. R. and Muralidhara (2010) Attenuation of rotenone-induced mitochondrial oxidative damage and neurotoxicty in drosophila melanogaster supplemented with creatine. Neurochemical Research, 35 (9). pp. 1402-1412. ISSN 0364-3190

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Abstract

Creatine (Cr), an ergogenic nutritional supplement is demonstrated to possess bioenergetic, anti-excitotoxic and antioxidant properties. This study investigated the neuroprotective effects of Cr against rotenone induced oxidative stress, mortality and neurotoxicty in Drosophila melanogaster. We found significant diminution in the endogenous levels of oxidative markers in whole body homogenates of flies exposed to Cr (2-10 mM). Cr supplementation resulted in reduced mortality in flies exposed to rotenone (500 mu M) and better performance in a negative geotaxis assay. Further Cr (10 mM) markedly offset rotenone induced mitochondrial oxidative stress, completely restored the GSH levels, nitric oxide levels, activity of Mn-SOD and dopamine depletion. In an oxidative stress bioassay, flies given Cr prophylaxis exhibited marked resistance to paraquat exposure. These data allow us to hypothesize that the neuroprotective action of Cr in Drosophila may be related to its direct antioxidant activity and ability to abrogate rotenone induced mitochondrial oxidative stress.

Item Type:	Article
Subjects:	B Life Science > Zoology
Divisions:	Department of > Zoology
Depositing User:	LA manjunath user
Date Deposited:	08 Jul 2019 11:44
Last Modified:	11 Dec 2019 10:39
URI:	http://eprints.uni-mysore.ac.in/id/eprint/4925

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