Cited by 123Dementia and Cognitive Impairment ResearchAlzheimer's disease research and treatmentsDiabetes Treatment and Management

Emerging links between type 2 diabetes and Alzheimer's disease

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Sridhar, Gumpeny R·2015·World Journal of Diabetes

Abstract

Type 2 diabetes mellitus and Alzheimer's disease are both associated with increasing age, and each increases the risk of development of the other. Epidemiological, clinical, biochemical and imaging studies have shown that elevated glucose levels and diabetes are associated with cognitive dysfunction, the most prevalent cause of which is Alzheimer's disease. Cross sectional studies have clearly shown such an association, whereas longitudinal studies are equivocal, reflecting the many complex ways in which the two interact. Despite the dichotomy, common risk and etiological factors (obesity, dyslipidemia, insulin resistance, and sedentary habits) are recognized; correction of these by lifestyle changes and pharmacological agents can be expected to prevent or retard the progression of both diseases. Common pathogenic factors in both conditions span a broad sweep including chronic hyperglycemia per se, hyperinsulinemia, insulin resistance, acute hypoglycemic episodes, especially in the elderly, microvascular disease, fibrillar deposits (in brain in Alzheimer's disease and in pancreas in type 2 diabetes), altered insulin processing, inflammation, obesity, dyslipidemia, altered levels of insulin like growth factor and occurrence of variant forms of the protein butyrylcholinesterase. Of interest not only do lifestyle measures have a protective effect against the development of cognitive impairment due to Alzheimer's disease, but so do some of the pharmacological agents used in the treatment of diabetes such as insulin (especially when delivered intranasally), metformin, peroxisome proliferator-activated receptors γ agonists, glucagon-like peptide-1 receptor agonists and dipeptidyl peptidase-4 inhibitors. Diabetes must be recognized as a risk for development of Alzheimer's disease; clinicians must ensure preventive care be given to control and postpone both conditions, and to identify cognitive impairment early to manage it appropriately.

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Authors
Sridhar, G. R.
Corresponding author
Sridhar, Gumpeny R
Venue
World Journal of Diabetes
Published
2015
Volume
6
Issue
5
Pages
744
ISSN
1948-9358 (ISSN-L)
OpenAlex
W563315964
Cited by
123
References
65
Citations by year
2026: 3 · 2025: 8 · 2024: 5 · 2023: 8 · 2022: 19 · 2021: 7 · 2020: 14 · 2019: 14 · 2018: 11 · 2017: 12 · 2016: 13 · 2015: 8
FWCI
2.02
Type
journal article
Language
en
Open access
Licence
cc-by-nc
Locations
  • World Journal of Diabetes (publishedVersion, cc-by-nc)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes Treatment and Management
Keywords
type 2 diabetes, Alzheimer's disease, cognitive impairment, hyperglycemia, insulin resistance, hyperinsulinemia, obesity, dyslipidemia, sedentary lifestyle, insulin-like growth factor, butyrylcholinesterase, insulin therapy, metformin, PPARγ agonists, GLP-1 receptor agonists, DPP-4 inhibitors, dementia prevention

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