Abstract
The purpose of this study was to examine the acute and sub-acute effects of diazinon onhistopathological parameters of liver tissue and blood level of hepatic enzymes of male commonfrog (Rana ridibunda). Frogs were assigned to 9 groups (n=8, meaning 8 frogs in each group):control and treatment groups with 30, 60, 90 and 120 μg/L diazinon in water for one day or oneweek. Hepatic enzymes containing alanine transaminase (ALT), aspartate aminotransferase(AST), and alkaline phosphatase (ALP) were measured using biochemical kit. All ALP valueswere significantly different between the control group and one-day and one-week diazinonexposed groups. Hepatocyte changes were observed only for diazinon concentrations greaterthan 60 μl after one week. The most important characteristics of the affected cells werehyperplasia and chromatin formation. Results show that sub-lethal concentrations of diazinonhave an increasing effect on the blood level of hepatic enzymes, which probably indicated thedetoxification response of liver on the basis of diazinon sub-lethal effect model.
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