Investigating GSTT1 and GSTM1 null genotype as the risk factor of diabetes type 2 retinopathy

Journal of Diabetes & Metabolic Disorders

Mohammad Afkhami-Ardekani¹  Mojtaba Darbouy²  Mohammad Hasan Sheikhha¹  Alamdar Dadbinpour² 

[1] Yazd Diabetes Research Center, Shahid Sadoughi University of Medical Sciences, Jomhori Boulevard, Yazd, Iran;Department of Molecular Genetics, Fars Science and Research Branch, Islamic Azad University (IAU), Shiraz, Iran

关键词: Retinopathy;    Diabetes type 2;    Glutathion S-transferase;   

Others  :  806785
DOI  :  10.1186/2251-6581-12-48

 received in 2013-05-24, accepted in 2013-08-12,  发布年份 2013

【 摘 要 】

Background

Diabetes is one of the multifactorial disorders with genetics and environmental factors playing important role in its cause. In diabetes, the defects in cellular metabolism results in increasing free radicals. These radicals react with other vital cellular molecules which are responsible in diabetes side effects. Human glutathione S-transferases (GST) are a family of enzymes that catalyses conjugation of electrophilic substances with glutathione. In this research the deletion of two of the most important genes of this family; GSTT1 and GSTM1 genes was investigated as the risk factor for diabetes mellitus type II and one of its most important complications; retinopathy.

Material and methods

In this study deletion of GSTT1 and GSTM1 genes in 57 diabetics’ patients with retinopathy and 58 diabetic peoples without retinopathy was examined. DNA was extracted from peripheral blood and then multiplex PCR was performed following agarose gel electrophoresis to detect GSTT1 and GSTM1 null genotypes. Data were analyzed with SPSS v16 software.

Results

The results indicated that there was significant relationship between GSTM1 null genotype with retinopathy side effect of diabetes type 2. While there was no significant relationship between GSTT1 null genotypes with retinopathy in diabetes type 2.

Conclusion

Significant correlation between GSTM1 null genotype and retinopathy in this and other studies could indicate this fact that impair cellular metabolism result in increase free radicals and oxidative pressure. Therefore, GST null genotypes may result in decrease antioxidant capacity which causes side effects of diabetes. Considering the performance of different classes of GST null genotypes additional studies are required to confirm this study.

【 授权许可】

   
2013 Dadbinpour et al.; licensee BioMed Central Ltd.

【 图 表 】

Figure 1.

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