May glutathione S-transferase M1 positive genotype afford protection against primary open-angle glaucoma?
OBJECTIVE
To find out whether the polymorphism at GSTM1, GSTT1 and GSTP1 loci is associated with increased susceptibility to glaucoma.


METHODS
We genotyped 153 primary open angle patients and 159 healthy controls. Genomic DNA from peripheral blood was examined using polymerase chain reaction and defined for the genetic polymorphisms of glutathione S-transferase.


RESULTS
The frequency of the GSTM1 null genotype individuals among the glaucoma patients was significanlty higher than in controls (54.9 vs 40.9%) with odds ratio of 1.64 (95% CI: 1.10-2.59). The frequency of the GSTT1 and GSTP1 in both groups were not statistically different.


CONCLUSIONS
The present study suggests that the GSTM1 null genotype may be a genetic risk factor for development of primary open angle glaucoma. Further associations studies in other polymorphic genes for xenobiotic-metabolizing enzymes are needed to elucidate the environmental-genetic interaction in the underlying cause of primary open angle glaucoma.
Yildirim
Ozlem
O
Department of Ophthalmology, Mersin Universitesi Tip Fakültesi, Mersin, Turkey. dryildirimoz@hotmail.com
Ateş
Nurcan Aras
NA
Tamer
Lülüfer
L
Oz
Ozay
O
Yilmaz
Ayça
A
Atik
Uĝur
U
Camdeviren
Handan
H
D000328:Adult; D000368:Aged; D017931:DNA Primers / Q000737:chemistry; D005260:Female; D005838:Genotype; D005902:Glaucoma, Open-Angle / Q000201:enzymology* / Q000235:genetics*; D051549:Glutathione S-Transferase pi; D005982:Glutathione Transferase / Q000235:genetics*; D006801:Humans; D007429:Intraocular Pressure; D007527:Isoenzymes / Q000235:genetics; D008297:Male; D008875:Middle Aged; D016133:Polymerase Chain Reaction; D011110:Polymorphism, Genetic; D012307:Risk Factors
D017931:DNA Primers; D051549:Glutathione S-Transferase pi; D005982:Glutathione Transferase; D007527:Isoenzymes; C413545:glutathione S-transferase T1; C496556:GSTP1 protein, human