Biochemical and Molecular Studies of Different Parameters as Markers for Nephropathy in Type 1 Diabetic Patients

Abstract

Albuminuria is the most characteristic marker of diabetic nephropathy (DN), which is a diabetic complication associated with DN progression. However, renal functions decreased by about one-third of diabetic patients before the occurrence of albuminuria. We study the role of telomere length (TL) of blood leukocytes, some inflammatory markers in the progression of DN in patients with type 1 diabetes (T1D). Volunteers were selected and distributed into four groups: group 1 included 20 healthy subjects as control, group 2: 20 T1D patients with albumin excretion rate (AER) < 30 mg/gm creatinine, group 3: 15 T1D patients with (300 > AER > 30 mg/gm creatinine), group 4: 15 T1D patients with (AER > 300 mg/gm creatinine) and group 5 (DN group), which is a collective group between group 3 and group 4. Glycated haemoglobin (HbA1c), serum urea, creatinine, malondialdehyde (MDA), 8-OHdG, and TL in leukocytes were measured. Results showed a significant increase in HbA1c, creatinine, urea, 8-OHdG, transforming growth factor β1 (TGF-β1), MDA and decrease in TL in G2, G3, G4, and G5 compared with control with a p-value < 0.05.