SEX AND SPECIES DIFFERENCES IN GLUTATHIONE S-TRANSFERASE ACTIVITIES

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Abstract
Glutathione S-transferases (GSTs) are one of the important enzymes in terms of not only drug metabolism but also physiological functions. The marked sex difference in GST activity has been found in rat and mouse liver cytosol, and such differences in rat liver are suggested to be primarily due to the differences in the subunit composition of GSTs in both sexes. In addition, GST activities of rat liver cytosol are known to be largely influenced by treatment with inducers such as phenobarbital and 3-methylcholanthrene and various hormones. GSTs are widely distributed in mammalian species, and multiplicity of GST has been demonstrated so far. The present review also describes multiple forms of GST from the viewpoint of enzymology and immunology.