Mostafalou_2012_Toxicol.Ind.Health_28_840

Several studies show that organophosphate pesticides exert several effects on glucose homeostasis The current study investigates the influence of subchronic exposure to malathion MT on hepatic gluconeogenesis in relation to acetyl cholinesterase AChE inhibition oxidative stress and inflammatory response in the rat MT was administered by gavage at doses of 25 50 and 100 mg/kg for 32 days Fasting hyperglycemia was seen in line with an increased activity of hepatic phosphoenolpyruvate carboxykinase glucose 6-phosphatase and tumor necrosis factor alpha In addition to the impaired glucose tolerance and inhibition of AChE in a dose-dependent manner there were significant increases in hepatic lipid peroxidation carbonyl groups and 8-deoxyguanosine as the biomarkers of reactive oxygen species-mediated damage to lipid protein and DNA respectively Altered quality of the liver in glucose production especially gluconeogenesis could be a compensatory mechanism against MT toxicity or even result in tissue damage MT-induced insulin resistance in the liver occurs through oxidative and inflammatory signaling pathways.