Cited by 225Treatment of Major DepressionDiabetes Treatment and ManagementMetabolism, Diabetes, and Cancer

Metformin may produce antidepressant effects through improvement of cognitive function among depressed patients with diabetes mellitus

Guo, Min, Mi, Jia, Jiang, Qiu‐Ming, Xu, Jin‐Mei, Tang, Ying‐Ying, Tian, Geng, Wang, Bin·2014·Clinical and Experimental Pharmacology and Physiology

Abstract

Summary: Diabetes mellitus and depressive disorders are both common chronic diseases that increase functional disability and social burden. Cognitive impairment is a potentially debilitating feature of depression. Previous evidence indicates that the antidiabetic drug metformin could be suitable for diabetic patients with cognitive impairment. However, there is no direct evidence from clinical studies that metformin treatment improves cognitive function in diabetic patients suffering from depression. In the present study, 58 participants diagnosed with depression and type 2 diabetes mellitus ( T 2 DM ) were recruited and divided into two groups, one treated with metformin and the other treated with placebo for 24 weeks. Cognitive function, depressive behaviour and diabetes improvement were evaluated. Chronic treatment with metformin for 24 weeks improved cognitive performance, as assessed by the W echsler M emory S cale– R evised, in depressed patients with T 2 DM . In addition, metformin significantly improved depressive performance and changed the glucose metabolism in depressed patients with diabetes. Depressive symptoms were negatively correlated with cognitive performance in metformin‐treated participants. Furthermore, associations were observed between the parameters of blood glucose metabolism and the depression phenotype. These findings suggest that chronic treatment with metformin has antidepressant behavioural effects and that improved cognitive function is involved in the therapeutic outcome of metformin. The results of the present study also raise the possibility that supplementary administration of antidiabetic medications may enhance the recovery of depression, comorbid with T 2 DM , through improvements in cognitive performance.

Integrity signals

Registry

Crossref · 10.1111/1440-1681.12265

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47 of 47 references verified0 citation errors · 0 not checkable

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  • In a 24-week interventional study testing metformin relative to placebo in individuals with major depressive disorder and comorbid type II diabetes mellitus (n = 58), metformin was superior to placebo in improving depressive symptoms.

    “The effect of metformin was superior to that of placebo in improving depressive symptoms in a sample of depressive patients with type II diabetes mellitus [122].”
  • Metformin improved memory performance, assessed by the Wechsler Memory Scale-Revised, which was significantly related to a decrease in depressive symptoms.

    “In addition, metformin improved memory performance (assessed by the Wechsler Memory Scale-Revised), which was significantly related to a decrease in depressive symptoms [122].”
  • In a clinical trial of 58 participants with depression and T2DM, metformin improved cognitive performance over 24 weeks.

    “In another clinical trial, 58 participants who had both depression and T2DM received either metformin or placebo for 24 weeks concluded that metformin improved cognitive performance (257).”

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Research works printed but not linked: 2

  1. American Psychiatric Association, 2000, Diagnostic and Statistical Manual of Mental Disorders–Fourth Edition
  2. Wechsler D, 1987, Wechsler Memory Scale‐Revised Manual

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Authors
Guo, M., Mi, J., Jiang, Q., Xu, J., Tang, Y., Tian, G., & Wang, B.
Affiliations
  • Harbin Medical University (CN)
  • Binzhou Medical University (CN)
  • Division of Endocrinology Aerospace Center Hospital Aerospace Clinical Medical College Peking University Beijing China
  • Department of Endocrinology Fourth Affiliated Hospital of Harbin Medical University Harbin China
Corresponding author
Guo, Min
Venue
Clinical and Experimental Pharmacology and Physiology
Publisher
Wiley
Published
2014-09
Volume
41
Issue
9
Pages
650-656
ISSN
  • 0305-1870 (ISSN-L)
  • 1440-1681
OpenAlex
W2069494503
Cited by
225
References
46
Citations by year
2026: 7 · 2025: 16 · 2024: 9 · 2023: 27 · 2022: 30 · 2021: 28 · 2020: 34 · 2019: 21 · 2018: 22 · 2017: 17 · 2016: 8 · 2015: 6
FWCI
7.58
Type
journal article
Language
en
Open access
closed
Locations
  • Clinical and Experimental Pharmacology and Physiology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Peking University
  • Science and Technology Support Plan for Youth Innovation of Colleges and Universities of Shandong Province of China
Topics
  • Health Sciences › Medicine › Pharmacology › Treatment of Major Depression
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes Treatment and Management
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolism, Diabetes, and Cancer
Keywords
metformin, antidepressant effects, depression, type 2 diabetes, cognitive impairment, cognitive function, glucose metabolism, depressive symptoms, comorbidities, antidiabetic drugs
MeSH terms
Adult, Antidepressive Agents, Cognition, Depression, Diabetes Mellitus, Type 2, Double-Blind Method, Female, Glycated Hemoglobin, Humans, Hypoglycemic Agents, Male, Metformin, Middle Aged, Psychiatric Status Rating Scales, Wechsler Scales

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