The effects of metformin in type 1 diabetes mellitus

BMC Endocrine Disorders - Tập 18 - Trang 1-6 - 2018
Selvihan Beysel1,2, Ilknur Ozturk Unsal3, Muhammed Kizilgul4, Mustafa Caliskan5, Bekir Ucan3, Erman Cakal3
1Department of Endocrinology and Metabolism, Eskisehir State Hospital, Eskisehir, Turkey
2Department of Medical Biology, Baskent University, Ankara, Turkey
3Department of Endocrinology and Metabolism, Ankara Diskapi Teaching and Research Hospital, Ankara, Turkey
4Department of Endocrinology and Metabolism, Kilis State Hospital, Kilis, Turkey
5Department of Endocrinology and Metabolism, Duzce Ataturk State Hospital, Duzce, Turkey

Tóm tắt

This retrospective study investigated the effect of adding metformin to pharmacologic insulin dosing in type 1 diabetics on insulin therapy 1 year after treatment compared with patients on insulin therapy alone. Twenty-nine adults with type 1 diabetes who had metformin added to their insulin therapy for 12 months were compared with 29 adults with type 1 diabetes who remained on insulin-alone therapy. Fifty-eight patients with C peptide negative-type 1 diabetics (26 females, mean age: 29.01 ± 7.03 years, BMI: 24.18 ± 3.16 kg/m2) were analyzed. Age, sex, body weight, insulin dose requirement, plasma glucose (PG), blood pressure (BP), and lipids did not differ between groups before treatment (p > 0.05). Metabolic syndrome (44.8 vs 41.4%, p > 0.05) did not differ between the metformin-insulin and insulin alone groups before treatment. Metabolic syndrome was more decreased in the metformin-insulin group than in the insulin alone group after treatment (−8.9 ± 1.3 vs. 2.5 ± 0.6%, p = 0.028). Insulin dose requirement was lower in the metformin-insulin group than in the insulin alone group (−0.03 vs. 0.11 IU/kg/d, p = 0.006). Fasting PG (−26.9 ± 54.2 vs. 0.7 ± 29.5 mg/dL, p = 0.022) and postprandial PG (−43.1 ± 61.8 mg/dL vs. −3.1 ± 40.1 mg/dL, p = 0.010) was more decreased in the metformin-insulin group than in the insulin alone group. Body weight, lipids, and HbA1c did not differ between the groups (p > 0.05). Metformin decreased glucose concentrations, reduced metabolic syndrome, as well as insulin dose requirement more than insulin therapy alone, 1 year after treatment. These results were independent of blood lipid improvement or weight loss, although on average weight remained decreased with metformin-insulin therapy, whereas the average weight increased with insulin therapy alone.

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