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Article type: Research Article
Authors: Wang, Qinga | Zhou, Wenjunb | Zhang, Jiec; * | for Alzheimer’s Disease Neuroimaging Initiative1
Affiliations: [a] Wenzhou Seventh People’s Hospital, Zhejiang, China | [b] Department of Pathology, Hangzhou Normal University, Zhejiang, China | [c] Independent Researcher, Hangzhou, Zhejiang, China
Correspondence: [*] Correspondence to: Jie Zhang, 25 Xuezheng Road, Xiasha District, Hangzhou, Zhejiang, China. E-mail: [email protected].
Note: [1] Data used in preparation of this article were obtained from the Alzheimer’s Disease Neuroimaging Initiative (ADNI) database (http://adni.loni.usc.edu). As such, the investigators within the ADNI contributed to the design and implementation of ADNI and/or provided data but did not participate in analysis or writing of this report. A complete listing of ADNI investigators can be found at: http://adni.loni.usc.edu/wp-content/uploads/how_to_apply/ADNI_Acknowledgement_List.pdf
Abstract: Background:Although a growing body of evidence shows an important role of apolipoproteins in the pathogenesis of Alzheimer’s disease (AD), the association of apolipoprotein C-III (APOC-III) with cognitive decline is not clear. Objective:To examine whether higher cerebrospinal fluid (CSF) and plasma APOC-III levels were associated with better cognitive performance over time in the early stage of AD. Methods:Baseline CSF and plasma APOC-III levels were analyzed in relation to cross-sectionally and longitudinally cognitive performance over a 12-year period. Data were extracted from the Alzheimer’s Disease Neuroimaging Initiative database, and 234 subjects (89 subjects with normal cognition (NC) and 145 subjects with mild cognitive impairment (MCI)) with CSF APOC-III measurements and 454 subjects (58 subjects with NC and 396 subjects with MCI) with plasma APOC-III measurements were included. Results:In the cross-sectional study, we did not find a significant relationship between CSF APOC-III and cognitive performance in pooled individuals with MCI and NC. However, longitudinal analysis found that higher baseline CSF APOC-III was significantly associated with slower cognitive decline over a 12-year period in individuals with MCI, but not the healthy controls, after controlling for several covariates and Alzheimer biomarkers. Plasma APOC-III levels showed a mild correlation with CSF APOC-III levels, but were not associated with longitudinal cognitive changes in the pooled sample or in diagnosis-stratified analyses. Conclusions:Higher CSF APOC-III levels are significantly associated with slower cognitive decline over a 12-year period among individuals with MCI.
Keywords: Alzheimer’s disease, apolipoprotein C-III, cognitive decline, mild cognitive impairment
DOI: 10.3233/JAD-181096
Journal: Journal of Alzheimer's Disease, vol. 67, no. 3, pp. 961-969, 2019
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