Abstract
The glutathione S-transferase activity in liver and kidney cytosol was significantly decreased in short term diabetes induced with streptozotocin, whereas no decrease in the transferase was observed in phenobarbital-treated diabetic rats. Toxicity of chloroform was potentiated in streptozotocin- or phenobarbital-treated rats. The decrease in liver cytosolic and microsomal glutathione S-transferase activity was observed in long term diabetic rats, and only microsomal transferase activity was restored by insulin treatment. There was no release of glutathione S-transferases into the serum in the diabetic rats, and the transferases were not inhibited by streptozotocin in vitro. These results showed that glutathione S-transferase activity decreased during diabetes, and this decrease may contribute to altering drug metabolism and toxicity in diabetes.
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