Cited by 489Dementia and Cognitive Impairment ResearchDiabetes Management and ResearchNeurological Disease Mechanisms and Treatments

Hippocampal damage and memory impairments as possible early brain complications of type 2 diabetes

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Gold, S. M., Dziobek, I., Sweat, V., Tirsi, A., Rogers, K., Bruehl, H., Tsui, W., Richardson, S. +2 more·2007·Diabetologia

Abstract

Aims/hypothesis There is evidence that type 2 diabetes mellitus is associated with cognitive impairment. Most studies investigating this association have evaluated elderly individuals, after many years of diabetes, who generally have poor glycaemic control and significant vascular disease. The aim of the current study was to investigate the early cognitive consequences and associated brain correlates of type 2 diabetes.Materials and methods With regard to cognition and brain measures, we compared 23 age-, sex- and education-matched control subjects with 23 mostly middle-aged individuals with relatively well-controlled diabetes of less than 10 years from the time of diagnosis.Results We found deficits in hippocampal-based memory performance and preservation of other cognitive domains. Relative to control subjects, individuals with diabetes had reductions in brain volumes that were restricted to the hippocampus. There was an inverse relationship between glycaemic control and hippocampal volume; in multivariate regression analysis, HbA(1c) was the only significant predictor of hippocampal volume, accounting for 33% of the observed variance. Other variables commonly associated with type 2 diabetes, such as elevated BMI, hypertension or dyslipidaemia, did not independently contribute to the variance in hippocampal volume.Conclusions/interpretation These results suggest that the medial temporal lobe may be the first brain site affected by type 2 diabetes and that individuals in poorer metabolic control may be affected to a greater extent.

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  1. Delis DC, Kramer JH, Kaplan E, Ober BA (1987) California verbal learning test-research edition. The Psychological Corporation, New York

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Authors
Gold, S. M., Dziobek, I., Sweat, V., Tirsi, A., Rogers, K., Bruehl, H., Tsui, W., Richardson, S., Javier, E., & Convit, A.
Affiliations
  • New York University (US)
  • Max Planck Society (DE)
  • Nathan Kline Institute for Psychiatric Research (US)
Corresponding author
Convit, A.
Venue
Diabetologia
Published
2007-02-14
Volume
50
Issue
4
Pages
711-719
ISSN
  • 0012-186X (ISSN-L)
  • 1432-0428
OpenAlex
W2030265072
Cited by
489
References
51
Citations by year
2026: 9 · 2025: 10 · 2024: 16 · 2023: 25 · 2022: 28 · 2021: 25 · 2020: 26 · 2019: 29 · 2018: 22 · 2017: 30 · 2016: 24 · 2015: 33 · 2014: 43 · 2013: 29 · 2012: 36
FWCI
15.30
Type
journal article
Language
en
Open access
Locations
  • Diabetologia (publishedVersion)
  • PubMed (publishedVersion)
  • Max Planck Institute for Plasma Physics (submittedVersion)
  • MPG.PuRe (Max Planck Society) (submittedVersion)
Funders
  • York University
  • National Institutes of Health
  • National Institute on Aging (P30 AG 08051, P30AG008051)
  • National Institute of Diabetes and Digestive and Kidney Diseases (R01DK064087, DK 064087)
  • National Center for Research Resources (RR 00096, M01 RR 00096, M01RR000096, DK064087)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes Management and Research
  • Life Sciences › Neuroscience › Neurology › Neurological Disease Mechanisms and Treatments
Keywords
type 2 diabetes, hippocampal volume, memory impairment, cognitive impairment, glycemic control, HbA1c, medial temporal lobe, brain volume, middle-aged adults
MeSH terms
Aged, Brain, Brain Diseases, Cognition, Diabetes Mellitus, Type 2, Female, Hippocampus, Humans, Magnetic Resonance Imaging, Male, Memory Disorders, Middle Aged, Neuropsychological Tests, Diabetes Complications

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