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Early administration of dapagliflozin preserves pancreatic beta-cell mass through a legacy effect in type 2 diabetic mice.

AIMS/INTRODUCTION: The preservation of pancreatic β-cell mass is an essential factor in the onset and development of type 2 diabetes mellitus. Recently, sodium-glucose co-transporter 2 inhibitors have been launched as anti-hyperglycemic agents, and their organ-protective effects are attracting attention. They are also reported to have favorable effects on the preservation of pancreatic β-cell mass, but the appropriate timing for the administration of sodium-glucose co-transporter 2 inhibitors is obscure.

MATERIALS AND METHODS: In this study, we administered a sodium-glucose co-transporter 2 inhibitor, dapagliflozin, to an animal model of type 2 diabetes mellitus, db/db mice, and investigated the adequate timing and duration for its administration. We also conducted microarray analysis using pancreatic islets from db/db mice.

RESULTS: We found that dapagliflozin preserved pancreatic β-cell mass depending on the duration of administration and markedly improved blood glucose levels. If the duration was the same, the earlier administration of dapagliflozin was more effective in preserving pancreatic β-cell mass, increasing serum insulin levels, and improving blood glucose levels. From microarray analysis, we discovered that the expression of Agr2, Tff2, and Gkn3 was significantly upregulated following the early administration of dapagliflozin. This upregulated gene expression might provide a legacy effect for the preservation of pancreatic β-cell mass.

CONCLUSIONS: We expect that the early administration of dapagliflozin would provide a long-lasting effect in preserving pancreatic β-cell mass. This article is protected by copyright. All rights reserved.

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