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Association between diabetes and causes of dementia: Evidence from a clinicopathological study

Authors :
Maria Niures Pimentel dos Santos Matioli
Claudia Kimie Suemoto
Roberta Diehl Rodriguez
Daniela Souza Farias
Magnólia Moreira da Silva
Renata Elaine Paraizo Leite
Renata Eloah Lucena Ferretti-Rebustini
Carlos Augusto Pasqualucci
Wilson Jacob Filho
Lea Tenenholz Grinberg
Ricardo Nitrini
Source :
Dementia & Neuropsychologia, Vol 11, Iss 4, Pp 406-412
Publisher :
Associação Neurologia Cognitiva e do Comportamento.

Abstract

ABSTRACT. Background: Diabetes mellitus is a risk factor for dementia, especially for vascular dementia (VaD), but there is no consensus on diabetes as a risk factor for Alzheimer's disease (AD) and other causes of dementia. Objective: To explore the association between diabetes and the neuropathological etiology of dementia in a large autopsy study. Methods: Data were collected from the participants of the Brain Bank of the Brazilian Aging Brain Study Group between 2004 and 2015. Diagnosis of diabetes was reported by the deceased's next-of-kin. Clinical dementia was established when CDR ≥ 1 and IQCODE > 3.41. Dementia etiology was determined by neuropathological examination using immunohistochemistry. The association of diabetes with odds of dementia was investigated using multivariate logistic regression. Results: We included 1,037 subjects and diabetes was present in 279 participants (27%). The prevalence of dementia diagnosis was similar in diabetics (29%) and non-diabetics (27%). We found no association between diabetes and dementia (OR = 1.22; 95%CI = 0.81-1.82; p = 0.34) on the multivariate analysis. AD was the main cause of dementia in both groups, while VaD was the second-most-frequent cause in diabetics. Other mixed dementia was the second-most-common cause of dementia and more frequent among non-diabetics (p = 0.03). Conclusion: Diabetes was not associated with dementia in this large clinicopathological study.

Details

Language :
English
ISSN :
19805764
Volume :
11
Issue :
4
Database :
Directory of Open Access Journals
Journal :
Dementia & Neuropsychologia
Publication Type :
Academic Journal
Accession number :
edsdoj.763b9c29e9c44037858ee22a0611c60a
Document Type :
article
Full Text :
https://doi.org/10.1590/1980-57642016dn11-040010