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Saudi Journal of Kidney Diseases and Transplantation
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ORIGINAL ARTICLE Table of Contents   
Year : 2020  |  Volume : 31  |  Issue : 4  |  Page : 787-795
Heat Shock Protein 70 Gene Polymorphism in Egyptian Patients with Type 2 Diabetes Mellitus, with and without Nephropathy

1 Department of Internal Medicine and Nephrology, Cairo University, Cairo, Egypt
2 Department of Biochemistry, Cairo University, Cairo, Egypt

Correspondence Address:
Osama Mohamady Elshahed
Department of Internal Medicine and Nephrology, Cairo University, Cairo
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/1319-2442.292312

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Heat-shock proteins (HSPs) are a group of proteins that function to protect cells and tissues against different types of damage. The aim of this work was to study the relationship between the genetic variation in HSP70 genes and the risk for development of nephropathy in Egyptian patients with Type 2 diabetes mellitus (DM). This study was carried out on 90 patients divided into three groups: 30 patients of Type 2 DM with nephropathy (Group I), 30 patients of Type 2 DM without nephropathy (Group II) with duration of diabetes > 10 years in both patient groups, and 30 healthy persons, who served as controls (Group III). All the studied patients were submitted to full history taking, complete clinical examination, and laboratory investigations including fasting blood glucose, glycated hemoglobin, renal function tests, and urinary albumin- to-creatinine ratio. HSP70-1 -110 AC, +190 G/C, HSP70-2 +1267 A/G, and shock protein70- hom +2437 T/C gene polymorphism were determined using the polymerase chain reaction- restriction fragment length polymorphism technique (PCR-RFLP). The results of the present study showed a highly statistically significant difference between Group I and Group II regarding family history, systolic and diastolic blood pressure, and duration of diabetes. There was a significant difference in the distribution of C allele of HSP70-1 -110A/C and +190 G/C and G allele of HSP70-2+1267A/G with more frequent detection in nephropathy group versus other groups, while there was no significant difference in genotype and allele distributions among the three studied groups for the HSP70-hom. It can be concluded that the C allele distribution of (HSP70-1 -110 A/C and HSP70+190 C/G) and the G allele distribution of HSP70-2 +1267A/G are associated with the susceptibility to renal complications in Egyptian patients with Type 2 DM.

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