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ORIGINAL ARTICLE
Minerva Endocrinology 2022 December;47(4):379-87
DOI: 10.23736/S2724-6507.22.03691-0
Copyright © 2022 EDIZIONI MINERVA MEDICA
language: English
Predicting the response to SGLT-2 inhibitors as add-on therapy to multiple day injection insulin with glycated albumin: a pilot study
Stefano IULIANO 1, Emanuela A. GRECO 2, Maria MIRABELLI 2, Eusebio CHIEFARI 2, Patrizia CAROLEO 3, Luigi PUCCIO 3, Stefania GIULIANO 2, Daniela P. FOTI 1, Antonio BRUNETTI 2 ✉, Antonio AVERSA 1
1 Department of Experimental and Clinical Medicine, The Magna Græcia University of Catanzaro, Catanzaro, Italy; 2 Department of Health Sciences, The Magna Græcia University of Catanzaro, Catanzaro, Italy; 3 Pugliese-Ciaccio Hospital, Catanzaro, Italy
BACKGROUND: Achieving optimal glycemic targets is the main therapeutic goal in patients with type 2 diabetes (T2D) mellitus. HbA1c is the reference biomarker for monitoring glycemic control; however, in specific conditions affecting erythrocyte turnover or in patients on multiple daily injection (MDI) insulin regimens, the determination of glycated albumin (GA) may be preferable. Sodium-glucose cotransporter-2 (SGLT-2) inhibitors represent a novel class of antidiabetic drugs that lower plasma glucose concentrations quickly, with insulin-independent mechanisms. Herein, we explored the role of GA in predicting the short-term response to SGLT-2 inhibitors as add-on to MDI insulin.
METHODS: Sixteen patients with long-standing, poorly controlled T2D on MDI insulin starting an SGLT-2 inhibitor were subjected to plasma GA and HbA1c measurements at 30 days intervals for up to 3 months in order to examine the temporal changes of these glycemic biomarkers.
RESULTS: At the end of the study, grossly coincident with the life span of erythrocytes, a significant decrease in median HbA1c was observed, (from 8.7 [range: 8.2-9.3%] at baseline to 7.2 [range: 7.0-7.9%]), with the advantage of less insulin dose requirements. However, significant, and incremental reductions in median GA determinations could be already evident after 30 days (-3.5 [range: -7.5, -2.5%]) and 60 days (-6.4 [range: -10.5, -4.7%]) from the start of SGLT-2 inhibitor treatment and persisted for up to 3 months (-8.6 [range: -12.1, 6.1%]). The decrements of HbA1c observed at the 3-month visit were highly correlated with the concurrent absolute reductions of plasma GA (ρ=0.550, P=0.027), whereas a borderline significance could be demonstrated with reference to reductions in plasma GA at 30 and 60 days.
CONCLUSIONS: Although limited by the small number of participants, these preliminary findings suggest that GA, rather than HbA1c, could represent a useful and reliable biomarker in T2D to monitor the early glucose-lowering effects of antidiabetic drugs with rapid onset of action, such as SGLT-2 inhibitors and MDI insulin.
KEY WORDS: Sodium-glucose transporter 2 inhibitors; Glycated serum albumin; Glycemic control; Diabetes mellitus, type 2