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Subject Area

Ophthalmology

Article Type

Original Study

Abstract

Objective The aim of the study was to measure the levels of vitamin D-binding protein (VDBP) and microalbumin in the urine of diabetic children (type 1) and to analyze the correlation of VDBP with other parameters. Background Elevated urinary vitamin D-binding protein (UVDBP) level in patients with diabetes indicates that renal tubular damage may be involved in early stages of the development of diabetic nephropathy (DN). Patients and methods A total of 20 type 1 diabetic patients and 20 healthy controls were subjected to full history taken, thorough clinical examination, and laboratory investigation, which included complete blood count, blood glucose profile, glycosylated hemoglobin, parameters of kidney function, liver function, measurement of microalbuminurea, and VDBP in urine by enzyme-linked immunosorbent assay. Results UVDBP level showed significant increases in type 1 diabetic patients with microalbuminuria and macroalbuminuria (mean: 562.990 ± 194.771) when compared with control group (mean: 172. 480 ± 41.856; P = 0.001). There was a positive correlation between UVDBP as a marker of DN and fasting blood glucose, 2-h postprandial blood glucose (2-h PP), glycosylated hemoglobin, duration of the disease, and albumin/creatinine ratio, but no significant correlation between UVDBP as a marker of DN and other laboratory data. Conclusion Our finding indicates that UVDBP level is a potential biomarker for early detection of DN.

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