Protective effects of Corchorus olitorius and Butea monosperma against Arsenic induced aberrant methylation and mitochondrial DNA damage in wistar rat model

[Display omitted] •Arsenic exposure through food causes genotoxic effects in vivo.•Sub chronic exposure to Arsenic causes pre-cancerous changes.•C. olitorious &B. monosperma have significant nephro & hepato protective potential.•Protective effect of both plants species is evident in molecular level.•Potent use as readily available food supplement to minimize Arsenic toxicity. Millions of people around the world are chronically exposed to Arsenic (As) through food and drinking water. Studies revealed that Arsenic is genotoxic and causes damage to DNA. In this study, we evaluated Corchorus olitorius and Butea monosperma for their alleviative properties against Arsenic induced genotoxicity in vivo using Wistar Rat model. Arsenic exposed rats were given C. olitorius leaf powder and B. monosperma flower powder as supplementation with normal food. Methylation status of p53 promoter was measured using Methylation Sensitive Restriction Endonuclease PCR (MSRE-PCR) assay and mitochondrial DNA (mtDNA) copy number as well as occurrence of a common deletion in mtDNA in liver and kidney tissue was determined through quantitative realtime PCR (qPCR). Arsenic exposed rats after supplementation showed relatively less severe effects of toxicity evident by significantly higher amount of (p