ArticleAlzheimer's & dementia : the journal of the Alzheimer's Association2025
The association of diabetes with Alzheimer's disease biomarkers and vascular burden across European aging and memory clinic cohorts.
Article in Alzheimer's & dementia : the journal of the Alzheimer's Association, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed.
- The association of diabetes with Alzheimer's disease biomarkers and vascular burden across European aging and memory clinic cohorts.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025Article
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38 authors.
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Abstract
introductionIt remains unclear whether diabetes mellitus (DM) is associated with Alzheimer's disease (AD) pathology and associated vascular burden.
methodsWe included cognitively normal (CN), mild cognitive impairment (MCI), and dementia individuals. We assessed associations between DM and AD biomarkers (amyloid beta [Aβ], phosphorylated tau-181 [p-tau181], total tau [t-tau], and medial temporal atrophy [MTA]) and vascular burden (white matter hyperintensities, microbleeds) by logistic regression. Secondary analyses assessed associations between DM and profiles of Aβ combined with p-tau181/t-tau/MTA/white matter hyperintensity/microbleeds.
resultsWe included 5550 participants (65.8+-8.7 years, 8.7% DM). DM was associated with lower odds of abnormal AD biomarkers: Aβ in MCI (odds ratio [OR] = 0.70, 95% confidence interval [CI]: 0.51-0.95, p = 0.02) and dementia (OR = 0.44, 0.26-0.78, p = 0.003), and p-tau181 in dementia (OR = 0.64, 0.41-1.00, p = 0.045). Secondary analyses indicated associations of DM with abnormal t-tau (OR = 1.57, 1.00-2.46, p = 0.048) and MTA (OR = 1.96, 1.05-3.68, p = 0.04) only in CN individuals with normal Aβ. DISCUSSION: In cognitively impaired individuals, DM was associated with lower odds of Aβ pathology, whereas DM was associated with neurodegeneration markers in CN individuals without Aβ pathology. HIGHLIGHTS: Diabetes mellitus (DM) was associated with lower odds of amyloid beta (Aβ) and phosphorylated tau (p-tau) pathology across clinical populations. DM was associated with total tau and medial temporal atrophy in cognitively normal individuals without Aβ pathology. DM may be associated with dementia through neurodegenerative pathways other than Alzheimer's disease.
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