Effect of metformin on gut microbiota imbalance in patients with T2DM, and the value of probiotic supplementation

Effect of Metformin on Gut Microbiota Imbalance in T2DM Patients and the Value of Probiotic Supplementation

ABSTRACT

PURPOSE: This study aimed to investigate the impact of metformin on gut microbiota imbalance in patients with type 2 diabetes mellitus (T2DM) and the potential benefits of probiotic supplementation.

METHODS: 84 newly diagnosed T2DM patients were randomly assigned to probiotics, metformin, or control groups. Blood glucose control, islet function, gut microbiota, and inflammatory factors were compared among the three groups.

RESULTS: After 3 months of treatment, both the probiotics and metformin groups showed significant reductions in fasting plasma glucose (FPG), 2-hour postprandial plasma glucose (2-h PG), and glycosylated hemoglobin A1c (HbA1c) compared to the control group. The metformin group exhibited lower FPG, 2-h PG, and HbA1c than the control group, while the probiotic group showed even lower levels than the metformin group. Additionally, fasting insulin (FINS) and islet β cell (HOMA-β) function increased, while insulin-resistant islet β cells (HOMA-IR) decreased in both treatment groups compared to the control group. The number of beneficial gut bacteria increased, and inflammatory factor levels decreased in both probiotic and metformin groups.

CONCLUSION: Metformin treatment for T2DM contributes to improving gut microbiota imbalance.

PMID: 38970270 | DOI: 10.15586/aei.v52i4.1101

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