Abstract
Trimethyltin chloride (TMT) is widespread in the environment and is harmful to both humans and animals. In order to investigate the toxicity mechanism of TMT exposure on chicken liver, We established an in vivo experimental model by giving chickens oral administration of different concentrations of TMT dilution solution and vitro experiments of treating leghorn male hepatoma (LMH) cells for 12 h. The results showed that Albumin (ALB), total protein (TP) and alanine aminotransferase (ALT) in the blood of TMT-treated chickens, as well as ALT and aspartate aminotransferase (AST) in the liver, were dose-dependently increased, and different degrees of necrosis of hepatocytes were observed in histology. Meanwhile, TMT exposure led to a significant decrease in glutathione (GSH) content in chicken liver tissues and LMH cells, what's more a significant increase in malondialdehyde (MDA) content in cell supernatants. The expression of apoptosis-related genes Caspase8, Caspase3 and Caspase9 were increased in chicken liver tissues and LMH cells after treated by TMT, and an increased in the percentage of late apoptosis in LMH cells. This suggests that TMT can cause oxidative stress and apoptosis in chicken livers and cells, resulting in liver injury.
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