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<p>Metformin, a cornerstone in the pharmacologic management of type 2 diabetes mellitus (T2DM), continues to be one of the most widely utilized antidiabetic agents globally. Beyond its primary role in glycemic control, metformin has demonstrated a variety of pleiotropic effects in both clinical and experimental settings. Among these, its cardiovascular protective properties have attracted considerable attention. The purpose of this study was to investigate the benefits of metformin in acute myocardial infarction (AMI) prevention in patients with T2DM. This retrospective cohort study utilized data from Taiwan’s National Health Insurance Research Database, spanning the years 2000 to 2013. A total of 9186 patients with T2DM who were prescribed metformin were identified as the exposed group, while an equal number of patients with T2DM who had not received metformin served as the comparison (non-exposed) group. AMI was defined as the primary outcome of interest. To investigate the relationship between metformin use and AMI risk in patients with T2DM, hazard ratios (HRs) and corresponding 95% confidence intervals (CIs) were estimated using a Cox proportional hazards model. The analysis included 9186 metformin users and an equal number of non-users, we identified 282 and 339 AMI cases, respectively, for incidence rates of 3.36 and 4.15 per 1000 person years, respectively. Adjusted HR (95% CI) for metformin treatment and incident AMI was 0.76 (0.41–0.96). This negative association was consistently observed in both sexes [adjusted HR (95% CI) was 0.72 (0.56–0.97) for males adjusted HR (95% CI) was 0.87 (0.54–0.94) for females]. In summary, metformin treatment reduced the risk of AMI in patients with T2DM. These findings suggest that metformin may serve a dual role in both managing hyperglycemia and reducing cardiovascular risk.</p>

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Effects of metformin treatment on the risk of acute myocardial infarction

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年7月29日

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  • Chao-Chien Chang,
  • Yu-Ching Chou,
  • Tsan Yang,
  • Jin-Yin Chang,
  • Chien-An Sun

摘要

Metformin, a cornerstone in the pharmacologic management of type 2 diabetes mellitus (T2DM), continues to be one of the most widely utilized antidiabetic agents globally. Beyond its primary role in glycemic control, metformin has demonstrated a variety of pleiotropic effects in both clinical and experimental settings. Among these, its cardiovascular protective properties have attracted considerable attention. The purpose of this study was to investigate the benefits of metformin in acute myocardial infarction (AMI) prevention in patients with T2DM. This retrospective cohort study utilized data from Taiwan’s National Health Insurance Research Database, spanning the years 2000 to 2013. A total of 9186 patients with T2DM who were prescribed metformin were identified as the exposed group, while an equal number of patients with T2DM who had not received metformin served as the comparison (non-exposed) group. AMI was defined as the primary outcome of interest. To investigate the relationship between metformin use and AMI risk in patients with T2DM, hazard ratios (HRs) and corresponding 95% confidence intervals (CIs) were estimated using a Cox proportional hazards model. The analysis included 9186 metformin users and an equal number of non-users, we identified 282 and 339 AMI cases, respectively, for incidence rates of 3.36 and 4.15 per 1000 person years, respectively. Adjusted HR (95% CI) for metformin treatment and incident AMI was 0.76 (0.41–0.96). This negative association was consistently observed in both sexes [adjusted HR (95% CI) was 0.72 (0.56–0.97) for males adjusted HR (95% CI) was 0.87 (0.54–0.94) for females]. In summary, metformin treatment reduced the risk of AMI in patients with T2DM. These findings suggest that metformin may serve a dual role in both managing hyperglycemia and reducing cardiovascular risk.