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Scand J Gastroenterol. 2005 Mar;40(3):348-53.

Polymorphisms of the glutathione S-transferases mu-1 (GSTM1) and theta-1 (GSTT1) and the risk of advanced alcoholic liver disease.

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  • 1Services of Gastroenterology, Universidad Complutense de Madrid, Spain. jladero.hcsc@salud.madrid.org

Abstract

OBJECTIVE:

The aim of this study was to determine whether null genotypes for glutathione transferase mu-1 (GSTM1) and theta-1 (GSTT1) influence the risk of development of advanced alcoholic liver disease.

MATERIAL AND METHODS:

GSTM1 and GSTT1 genotypes were identified on DNA through multiple analysis with polymerase chain reaction in 153 subjects diagnosed with advanced alcoholic liver disease and in 241 healthy controls.

RESULTS:

The frequency of the GSTM1 null genotype was not different between patients and controls (36.6% versus 41.1%, non-significant). The GSTT1 null genotype was more frequently found in patients than in controls (32% versus 22%, odds ratio 1.67, 95% CI 1.03-2.71, p =0.027). Moreover, patients were more likely to be simultaneous carriers of both GSTM1 and GSTT1 null genotypes (odds ratio 4.30, 95% CI 1.89-9.97, p =0.0003).

CONCLUSIONS:

The GSTT1 null genotype is more frequent among patients with advanced alcoholic liver disease than in controls. The coincidence of this genotype with the GSTM1 null genotype is four times more likely in patients. We suggest that polymorphisms affecting the activity of the glutathione S-transferase isoforms M1 and T1 may be associated with the risk of developing chronic severe ethanol liver damage.

PMID:
15932176
[PubMed - indexed for MEDLINE]
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