We conducted this study to determine whether additional administration of a dipeptidyl peptidase-4 (DPP-4) inhibitor might provide further improvement of the glycemic control in Japanese type 2 diabetes patients showing relatively good glycemic control under treatment with a sodium glucose co-transporter 2 (SGLT2) inhibitor. Five SGLT2 inhibitor (luseogliflozin, dapagliflozin, tofogliflozin, empagliflozin and canagliflozin) preparations and five DPP-4 inhibitor (sitagliptin, vildagliptin, alogliptin, anagliptin and linagliptin) preparations were used. The results showed that monotherapy with SGLT2 inhibitor produced significant decreases of the body weight and BMI, hemoglobin A1c (HbA1c) also decreased, but not to a significant extent. However, decreases of the serum aspartate aminotransferase (AST), alanine aminotransferase (ALT), γ-glutamyltransferase (γ-GTP) and uric acid were observed in this group. On the other hand, in type 2 diabetes patients treated concomitantly with a DPP-4 inhibitor and SGLT2 inhibitor, significant decrease of the HbA1c was observed, indicating the favorable effect of the concomitant therapy. The body weight and BMI decreased. As for the serum lipid profile, elevation of the serum HDL-cholesterol (HDL-C) was observed. Furthermore, AST, ALT, γ-GTP and uric acid decreased in the combined treatment group. Then, the therapeutic responses to concurrent administration with SGLT2 inhibitor of each of the 5 individual DPP-4 inhibitors used in this study were analyzed. The results showed that concomitant administration of sitagliptin, a DPP-4 inhibitor, with the SGLT2 inhibitor yielded the best results in terms of the lowering of the HbA1c and improvement of the serum lipid profile.

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http://dx.doi.org/10.1055/a-0585-0145DOI Listing

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