Association of rs7903146 polymorphism in the TCF7L2 gene with diabetic nephropathy and decreased estimated GFR in an Arab population in southwest Iran
BackgroundTranscription factor 7-like 2 (TCF7L2) acts as a downstream effector in the Wnt signaling pathway. It plays important roles in the proliferation and differentiation of islet betacell, insulin secretion and kidney development.
ObjectivesThis study aimed to demonstrate whether rs7903146 variant is associated with diabetic nephropathy (DN) and measures of kidney function in a diabetic and healthy Arab population in southwest of Iran.
MethodsThis study is comprised of 132 diabetic subjects (T2DM) and 66 healthy participants. The diabetic subgroups were composed of patients with DN (n=56) and early onset of diabetes (n=71). The rs7903146 polymorphism was genotyped using the polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) method in all the participants. Blood glucose, HbA1c, blood urea nitrogen (BUN), creatinine and urinary albumin were evaluated by a biochemistry analyzer and enzyme-linked immunosorbent assay (ELISA) was employed for cystatin C measurement.
ResultsThe frequency of genotypes was significantly different between all the diabetic cases and control subjects (P
ConclusionsThe results confirmed that the TCF7L2 gene rs7903146 variants are significantly associated with T2DM in Arab population of Iran. The TT genotype of this SNP is also predisposed to the risk of developing DN especially in subjects with early onset diabetes. Patients with TT genotype were also at risk of decreased GFR.
Journal of nephropathology, Volume:7 Issue:4, 2018
273 - 280
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