کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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6197143 | 1602607 | 2013 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Association study of sorbitol dehydrogenase â888G>C polymorphism with type 2 diabetic retinopathy in Caucasian-Brazilians Association study of sorbitol dehydrogenase â888G>C polymorphism with type 2 diabetic retinopathy in Caucasian-Brazilians](/preview/png/6197143.png)
Diabetic retinopathy (DR) is a common chronic complication of diabetes and remains the leading cause of blindness in working-aged people. Hyperglycemia increases glucose flux through the polyol pathway, in which aldose reductase converts glucose into intracellular sorbitol, which is subsequently converted to fructose by sorbitol dehydrogenase (SDH). The accelerated polyol pathway triggers a cascade of events leading to retinal vascular endothelial dysfunction and the eventual development of DR. Polymorphisms in the gene encoding aldose reductase have been consistently associated with DR. However, only two studies have analyzed the relationship between polymorphisms in the gene encoding SDH (SORD) and DR. In this case-control study, we investigated whether the â888G > C polymorphism (rs3759890) in the SORD gene is associated with the presence or severity of DR in 446 Caucasian-Brazilians with type 2 diabetes (241 subjects with and 205 subjects without DR). The â888G > C polymorphism was also examined in 105 healthy Caucasian blood donors, and the genotyping of this polymorphism was carried out by real-time PCR. The genotype and allele frequencies of the â888G > C polymorphism in patients with type 2 diabetes were similar to those of blood donors (G allele frequency = 0.16 in both groups of subjects). Similarly, the genotype and allele frequencies in patients with DR or the proliferative form of DR were similar to those of patients without this complication (P > 0.05 for all comparisons). Thus, our findings suggest that the â888G > C polymorphism in the SORD gene is not involved in the pathogenesis of DR in type 2 diabetes.
Journal: Experimental Eye Research - Volume 115, October 2013, Pages 140-143