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  • Title: Discordance in the reduction rate between glycated albumin and glycated hemoglobin levels in type 2 diabetes patients receiving SGLT2 inhibitors.
    Author: Shimizu N, Ogawa A, Hayashi A, Shichiri M.
    Journal: J Diabetes Complications; 2022 Jul; 36(7):108225. PubMed ID: 35690574.
    Abstract:
    AIMS: Although the difference in HbA1c reduction between sodium-glucose cotransporter 2 (SGLT2) inhibitors and other oral glucose-lowering agents is relatively small, SGLT2 inhibitors exhibit beneficial cardiorenal protection. This study was based on the hypothesis that changes of HbA1c in patients treated with SGLT2 inhibitors may not accurately reflect an improved glycemic profile. METHODS: Two studies were conducted: 1) a retrospective cohort study of 3039 patients administered with either an SGLT2 or a dipeptidyl peptidase-4 (DPP4) inhibitor for 12 months comparing the changes in glycated albumin (GA) and HbA1c levels and 2) a pilot study of 10 patients whose glycemic dynamics were evaluated using flash glucose monitoring at baseline and 2 months after treatment with an SGLT2 inhibitor. RESULTS: SGLT2 inhibitors reduced GA more markedly than HbA1c in both studies. DPP4 inhibitors decreased both GA and HbA1c to a comparable degree. The mean glucose levels and glycemic standard deviation were significantly reduced after treatment with an SGLT2 inhibitor, in concordance with GA decline, although the lowering of HbA1c was marginal. CONCLUSIONS: Changes in HbA1c levels underestimated the glucose-lowering effect and the diminished glycemic fluctuation induced by SGLT2 inhibitors. Thus, the distinct biomarker roles of GA and HbA1c should be reevaluated.
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