A Cross-sectional Study on Vitamin D Status in Patients with Diabetic Nephropathy

Abstract

Background: Vitamin D deficiency is documented to be more prevalent in Type 2 Diabetes Mellitus (T2DM) and is associated with diabetic nephropathy. Aim and Objective: To investigate the vitamin D status in T2DM patients with and without nephropathy in eastern part of southern India. Material and Methods: This cross-sectional study included 150 study subjects. Routine laboratory measurements were done using commercially available kits on Vitros 5, 1 FS auto analyzer from Ortho Clinical Diagnosis (OCD), United Kingdom, based on the principle of Reflectance Photometry. Serum 25-hydroxyvitamin D was measured by using chemiluminescence immunoassay methods. Results were analysed using IBM-SPSS version 20. Results: Vitamin D levels were observed to be lower in the diabetic nephropathy (18.44 ± 8.69 ng/mL) as compared to control (26.55 ± 7.88 ng/mL) and T2DM (19.64 ± 9.93 ng/mL) subjects and were correlated significantly with HbA1c and microalbumin. A markedly higher proportion of study subjects with vitamin D deficiency as well as insufficiency in T2DM and diabetic nephropathy group. Conclusion: Patients with type 2 diabetes and diabetic nephropathy had a low serum vitamin D level than healthy control. Vitamin D estimation in such patients may aid in the diagnosis and treatment as well as to prevent further complication.

Keywords

• type 2 diabetes mellitus
• 25-hydroxyvitamin d
• diabetic nephropathy
• microalbuminuria
• lipid profile