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Common polymorphisms in antioxidant genes are associated with diabetic nephropathy in Type 2 diabetes patients
Jasna Klen1, Katja Goričar2, Andrej Janež3
1General Hospital Trbovlje, Rudarska cesta 9, 1420 Trbovlje, Slovenia.
Aim:
To investigate if antioxidative genes' polymorphisms influence the risk for Type 2 diabetes (T2D) complications.
Materials & Methods:
In total, 181 T2D patients were genotyped for SOD2, CAT, GPX1, GSTP1, GSTM1*0, GSTT1*0, GCLC and GCLM.
Results:
After adjustment for duration of T2D, CAT rs1001179 and GSTP1 rs1138272 showed strongest association with risk for end-stage kidney failure (p = 0.005 and p = 0.049, respectively). In patients without end-stage kidney failure CAT rs1001179 influenced urea levels (p = 0.003), while GSTP1 rs1695 and GSTP1 haplotypes influenced the risk of moderately increased albuminuria (p = 0.024 and p = 0.014, respectively).
Conclusion:
Common CAT and GSTP1 polymorphisms could be used to identify T2D patients at an increased risk for developing end-stage kidney failure.
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