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Liver glutathione S-transferase polymorphism in Japanese and its pharmacogenetic importance

✍ Scribed by Shoji Harada; Masato Abei; Naomi Tanaka; Dharam P. Agarwal; H. Werner Goedde

Publisher
Springer
Year
1987
Tongue
English
Weight
918 KB
Volume
75
Category
Article
ISSN
0340-6717

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✦ Synopsis

A total of 168 autopsy liver extracts from Japanese individuals were examined for the glutathione S-transferase (GST) isozymes by means of starch gel electrophoresis. The gene frequencies of GST1*1, GST1*2, and GST1*0 in Japanese were 0.252, 0.057, and 0.691, respectively. GST1*3 was detected as a rare variant allele. The incidence of GST1 0 in 41 liver biopsy samples from patients suffering from various liver diseases was investigated using polyacrylamide gel isoelectric focusing. The GST1 0 phenotype was found more frequently in livers with hepatitis and carcinoma than in control livers. The isozymes coded by different GST loci were partially purified and characterized to study their biochemical properties. The apparent Km values with 1-chloro-2,4-dinitrobenzene (CDNB) as substrate for the isozymes at the GST1, GST2, GST3, and GST4 loci were 604, 1345, 776, and 591 microM, respectively.

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