Effect of metformin on the clinical outcomes of stroke in patients with diabetes: a systematic review and meta-analysis

Objectives Stroke is a major cause of death and disability globally, especially among diabetic patients. In this study, we aim to scrutinise the effects of metformin on the clinical outcomes of stroke in diabetic patients.Design This study followed the Preferred Reporting Items for Systematic Review...

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Main Authors: Jianming Zhu, Jun Wen, Zhihua Huang, Jianyi Liu, Fuqun Luo, Yizhi Guo, Yandeng Li
Format: Article
Language:English
Published: BMJ Publishing Group 2025-01-01
Series:BMJ Open
Online Access:https://bmjopen.bmj.com/content/15/1/e092214.full
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author Jianming Zhu
Jun Wen
Zhihua Huang
Jianyi Liu
Fuqun Luo
Yizhi Guo
Yandeng Li
author_facet Jianming Zhu
Jun Wen
Zhihua Huang
Jianyi Liu
Fuqun Luo
Yizhi Guo
Yandeng Li
author_sort Jianming Zhu
collection DOAJ
description Objectives Stroke is a major cause of death and disability globally, especially among diabetic patients. In this study, we aim to scrutinise the effects of metformin on the clinical outcomes of stroke in diabetic patients.Design This study followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines.Data sources PubMed, Embase and Web of Science databases were searched between their inception and 5 December 2023.Eligibility criteria for selecting studies Studies investigating the effect of metformin on the clinical outcomes of stroke in patients with diabetes were included.Data extraction and synthesis The effect of metformin on the clinical outcomes of stroke in patients with diabetes was identified using combined ORs and 95% CIs.Results A total of 11 studies involving 18 525 participants were included in this review. Pooled analysis has demonstrated that prestroke metformin use could reduce the probability of poor course after stroke by 34% in diabetes mellitus (DM) patients (OR=0.66, 95% CI: 0.61 to 0.72) and reduce the probability of death by 43% (OR=0.57, 95% CI: 0.51 to 0.64).Conclusions Prestroke metformin use is beneficial for the improvement of clinical outcomes in patients who had a stroke with DM, although the potential bias should be carefully considered.PROSPERO registration number CRD42024496056.
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spelling doaj-art-b6e75dbe30c04aa4af8b5adc45dc155f2025-01-17T23:15:09ZengBMJ Publishing GroupBMJ Open2044-60552025-01-0115110.1136/bmjopen-2024-092214Effect of metformin on the clinical outcomes of stroke in patients with diabetes: a systematic review and meta-analysisJianming Zhu0Jun Wen1Zhihua Huang2Jianyi Liu3Fuqun Luo4Yizhi Guo5Yandeng Li61 Changde Hospital, Xiangya School of Medicine, Central South University (The First People`s Hospital of Changde City), Changde, Hunan, China1 Changde Hospital, Xiangya School of Medicine, Central South University (The First People`s Hospital of Changde City), Changde, Hunan, China1 Changde Hospital, Xiangya School of Medicine, Central South University (The First People`s Hospital of Changde City), Changde, Hunan, China1 Changde Hospital, Xiangya School of Medicine, Central South University (The First People`s Hospital of Changde City), Changde, Hunan, China1 Changde Hospital, Xiangya School of Medicine, Central South University (The First People`s Hospital of Changde City), Changde, Hunan, China1 Changde Hospital, Xiangya School of Medicine, Central South University (The First People`s Hospital of Changde City), Changde, Hunan, China2 Department of Neurology, Changde Hospital, Xiangya School of Medicine, Central South University (The First People`s Hospital of Changde City), Changde, Hunan, ChinaObjectives Stroke is a major cause of death and disability globally, especially among diabetic patients. In this study, we aim to scrutinise the effects of metformin on the clinical outcomes of stroke in diabetic patients.Design This study followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines.Data sources PubMed, Embase and Web of Science databases were searched between their inception and 5 December 2023.Eligibility criteria for selecting studies Studies investigating the effect of metformin on the clinical outcomes of stroke in patients with diabetes were included.Data extraction and synthesis The effect of metformin on the clinical outcomes of stroke in patients with diabetes was identified using combined ORs and 95% CIs.Results A total of 11 studies involving 18 525 participants were included in this review. Pooled analysis has demonstrated that prestroke metformin use could reduce the probability of poor course after stroke by 34% in diabetes mellitus (DM) patients (OR=0.66, 95% CI: 0.61 to 0.72) and reduce the probability of death by 43% (OR=0.57, 95% CI: 0.51 to 0.64).Conclusions Prestroke metformin use is beneficial for the improvement of clinical outcomes in patients who had a stroke with DM, although the potential bias should be carefully considered.PROSPERO registration number CRD42024496056.https://bmjopen.bmj.com/content/15/1/e092214.full
spellingShingle Jianming Zhu
Jun Wen
Zhihua Huang
Jianyi Liu
Fuqun Luo
Yizhi Guo
Yandeng Li
Effect of metformin on the clinical outcomes of stroke in patients with diabetes: a systematic review and meta-analysis
BMJ Open
title Effect of metformin on the clinical outcomes of stroke in patients with diabetes: a systematic review and meta-analysis
title_full Effect of metformin on the clinical outcomes of stroke in patients with diabetes: a systematic review and meta-analysis
title_fullStr Effect of metformin on the clinical outcomes of stroke in patients with diabetes: a systematic review and meta-analysis
title_full_unstemmed Effect of metformin on the clinical outcomes of stroke in patients with diabetes: a systematic review and meta-analysis
title_short Effect of metformin on the clinical outcomes of stroke in patients with diabetes: a systematic review and meta-analysis
title_sort effect of metformin on the clinical outcomes of stroke in patients with diabetes a systematic review and meta analysis
url https://bmjopen.bmj.com/content/15/1/e092214.full
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