A Comparative Study to Evaluate the Renoprotective Effect of Antidiabetic Drugs in Patients With Type 2 Diabetes Mellitus.
Pichholiya Meenu M, Abhinav Raj R, Singh Sakshi S, Yadav Arvind K AK et al.
Type 2 diabetes mellitus (T2DM) is a metabolic condition that often leads to long-term microvascular and macrovascular complications. Among its most frequent and severe complications is diabetic nephropathy, which stands as a primary contributor to chronic kidney disease and end-stage renal disease on a global scale. Literature search studies have exhibited both renoprotective and non-renoprotective effects of different antidiabetic drugs, and to our knowledge, no study comparing the renoprotective effect of antidiabetic drugs was found, so this study was designed to assess the impact of these drugs on kidney function in patients with T2DM. A prospective observational study was carried out on 100 patients with T2DM at a tertiary care hospital after approval from the institutional ethics committee. Informed consent was obtained from all patients. Patients aged ≥18 years receiving antidiabetic therapy were included in the study. Data, including demographic details, ongoing antidiabetic treatment, and clinical parameters, were recorded and analyzed according to the prescribed drug therapy. Glycemic control was assessed using HbA1c levels, while renal function was evaluated using renal parameters at baseline and during follow-up visits. The data was analyzed using IBM SPSS Statistics for Windows, Version 20 (Released 2011; IBM Corp., Armonk, New York, United States). A student's t-test and ANOVA were applied as appropriate, and a p-value < 0.05 was considered statistically significant. Patients receiving metformin and gliptin therapy showed a statistically significant reduction (p < 0.05) in HbA1c levels and mean serum urea during the study period. Serum creatinine levels were found to be slightly higher than the normal range in all the groups except metformin-based combination therapy with sulfonylureas and metformin-based combination therapy with sulfonylureas plus voglibose at the first visit. The values dropped down gradually in subsequent visits in all the groups except in the insulin group and the metformin-with-voglibose group, but were not statistically significant. A significant reduction was observed in the group taking metformin with sodium-glucose cotransporter 2 (SGLT2) inhibitors and gliptins. Renal function tests, such as serum urea and serum creatinine levels, showed significant changes during all three subsequent follow-ups. Proper use of antidiabetic drugs, particularly oral combination therapy, not only improves blood sugar control but also helps in protecting kidney function in diabetic patients. Future investigations with large sample sizes and longer observation periods are warranted to substantiate these findings.