1. Low Prevalence and Clinical Effect of Vascular Risk Factors in Early-Onset Alzheimer's Disease.
- Author
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Yaohua Chen, Sillaire, Adeline Rollin, Dallongeville, Jean, Skrobala, Emilie, Wallon, David, Dubois, Bruno, Hannequin, Didier, Pasquier, Florence, Chen, Yaohua, Pasquierthe, Florence, and Lille YOD study group
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ALZHEIMER'S disease , *VASCULAR diseases , *APOLIPOPROTEIN E , *GENOTYPES , *ALCOHOL drinking , *DISEASE risk factors , *AGE factors in disease , *ANIMAL experimentation , *APOLIPOPROTEINS , *CARDIOVASCULAR diseases , *COMPARATIVE studies , *LONGITUDINAL method , *RESEARCH methodology , *MEDICAL cooperation , *MULTIVARIATE analysis , *RESEARCH , *COMORBIDITY , *LOGISTIC regression analysis , *EVALUATION research , *DISEASE prevalence - Abstract
Background: Determinants of early-onset Alzheimer's disease (EOAD) are not well known. In late-onset AD, vascular risk factors (VRFs) are associated with earlier clinical manifestation.Objective: The objective of this study was to assess the putative association between VRFs and EOAD.Methods: We studied participants with dementia meeting criteria for EOAD (recruited into the French CoMAJ prospective cohort study from 1 June 2009 to 28 February 2014) and age-, gender-matched controls (ratio 1:3, drawn randomly from the French MONA-LISA population-based survey between 2005 and 2007). Demographic data, VRFs, comorbidities, treatments, and APOE genotypes were compared in multivariable logistic regression analyses.Results: We studied 102 participants with dementia (mean±standard deviation age: 59.5±3.8; women: 59.8%) and 306 controls. Compared with controls, EOAD participants had spent less time in formal education (9.9±2.9 versus 11.7±3.8 y; p < 0.0001), were less likely to be regular alcohol consumers (p < 0.0001), had a lower body mass index (-2 kg/m2; p < 0.0004), and a lower mean systolic blood pressure (-6.2 mmHg; p = 0.0036). The prevalence of APOE ɛ4 allele was higher in participants with dementia than in controls (50% versus 29.4%; p = 0.0002), as was the prevalence of depression (48% versus 32%; p < 0.001). Similar results were observed in multivariable analysis. Compared with EOAD participants lacking VRFs, EOAD participants with at least one VRF had a higher prevalence of depression (29.6% versus 53.3%, respectively; p = 0.03).Conclusion: The prevalence of VRFs is not elevated in EOAD patients (in contrast to older AD patients). Extensive genetic testing should be considered more frequently in the context of EOAD. [ABSTRACT FROM AUTHOR]- Published
- 2017
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