Glutathione S-transferase T1 (GSTT1) and M1 (GSTM1) polymorphisms in a sample of the population in Northern Italy

Glutathione S-transferase T1 (GSTT1) and M1 (GSTM1) polymorphisms in a sample of the population... Glutathione S-transferase is a group of multifunctional enzymes important in the metabolism of xenobiotics. GSTT1 and GSTM1 are polymorphic in human populations. Since a relation between polymorphism and cancer susceptibility has been found, their distribution in human populations is of great interest. In the present study the distribution of GSTT1 and GSTM1 genotypes was studied in a total sample of 252 individuals of three localities of northwest Italy (Postua, Cavaglià, and Biella) by PCR test. The frequencies of GSTT1 and GSTM1 “null” genotypes were respectively 7.94 and 34.92%. There are no significant differences between the populations studied in the GSTT1 “null” genotypes. On the other hand, for GSTM1 the frequency of gene deletion in Postua (25.5%) differs significantly (P < 0.01; χ2 test) from that of Biella (46.32%), which on the other hand approaches the values indicated by most studies for Europeans (about 50%). The analysis of the frequencies of GSTT1 and GSTM1 polymorphisms among different age groups showed a lower frequency of negative genotypes in the older group, although not statistically confirmed. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Genetics Springer Journals

Glutathione S-transferase T1 (GSTT1) and M1 (GSTM1) polymorphisms in a sample of the population in Northern Italy

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Publisher
Nauka/Interperiodica
Copyright
Copyright © 2007 by Pleiades Publishing, Inc.
Subject
Biomedicine; Human Genetics; Animal Genetics and Genomics; Microbial Genetics and Genomics
ISSN
1022-7954
eISSN
1608-3369
D.O.I.
10.1134/S1022795407060129
Publisher site
See Article on Publisher Site

Abstract

Glutathione S-transferase is a group of multifunctional enzymes important in the metabolism of xenobiotics. GSTT1 and GSTM1 are polymorphic in human populations. Since a relation between polymorphism and cancer susceptibility has been found, their distribution in human populations is of great interest. In the present study the distribution of GSTT1 and GSTM1 genotypes was studied in a total sample of 252 individuals of three localities of northwest Italy (Postua, Cavaglià, and Biella) by PCR test. The frequencies of GSTT1 and GSTM1 “null” genotypes were respectively 7.94 and 34.92%. There are no significant differences between the populations studied in the GSTT1 “null” genotypes. On the other hand, for GSTM1 the frequency of gene deletion in Postua (25.5%) differs significantly (P < 0.01; χ2 test) from that of Biella (46.32%), which on the other hand approaches the values indicated by most studies for Europeans (about 50%). The analysis of the frequencies of GSTT1 and GSTM1 polymorphisms among different age groups showed a lower frequency of negative genotypes in the older group, although not statistically confirmed.

Journal

Russian Journal of GeneticsSpringer Journals

Published: Jun 28, 2007

References

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