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- W2340394209 abstract "Environmental exposure to the oxidant-producing herbicide, paraquat (PQ) (1,1'-dimethyl-4,4'-bipyridinium dichloride) has long been implicated as a risk factor in Parkinson's disease (PD). PQ-induced oxidative stress has been exploited as a model to screen putative neuroprotective compounds employing Drosophila. In the present study, we investigated the prophylactic efficacy of Bacopa monnieri (BM) against PQ-induced oxidative stress, mitochondrial dysfunctions and lethality. Exposure of adult male flies (Oregon K) to PQ alone (40 mM in 5% sucrose) resulted in 50% mortality at 48 h. Prophylaxis (7 days) with BM extract (0.1%) offered significant protection (40%) against PQ-induced mortality. Further, oxidative impairments and mitochondrial dysfunctions were monitored among Drosophila exposed to PQ (20, 40 mM) for 24 h. Significant induction of oxidative stress was observed in terms of enhanced malondialdehyde and hydroperoxide levels, and elevated activities of antioxidant enzymes (catalase and SOD). Mitochondrial dysfunctions included of significant reduction in the activities of succinate dehydrogenase (23%), complex I-III (26%), and complex II-III (30%) enzymes. Interestingly, prophylaxis with BM extract prevented the oxidative stress induction by PQ and restored the activity of ETC complexes, suggesting clearly its specific effect on the mitochondria. While the precise mechanism of action of BM needs further investigations, it may be related to its ability to enhance antioxidant defences and thus mitigate PQ-induced oxidative stress in Drosophila." @default.
- W2340394209 created "2016-06-24" @default.
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- W2340394209 date "2010-04-01" @default.
- W2340394209 modified "2023-09-23" @default.
- W2340394209 title "Prophylactic treatment with Bacopa monnieri leaf powder mitigates paraquat-induced oxidative perturbations and lethality in Drosophila melanogaster." @default.
- W2340394209 cites W2295933928 @default.
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