Projects per year
Abstract
INTRODUCTION: The apolipoprotein E (APOE) genotype is the strongest genetic risk factor for late-onset Alzheimer's disease. However, its effect on lipid metabolic pathways, and their mediating effect on disease risk, is poorly understood.
METHODS: We performed lipidomic analysis on three independent cohorts (the Australian Imaging, Biomarkers and Lifestyle [AIBL] flagship study, n = 1087; the Alzheimer's Disease Neuroimaging Initiative [ADNI] 1 study, n = 819; and the Busselton Health Study [BHS], n = 4384), and we defined associations between APOE ε2 and ε4 and 569 plasma/serum lipid species. Mediation analysis defined the proportion of the treatment effect of the APOE genotype mediated by plasma/serum lipid species.
RESULTS: A total of 237 and 104 lipid species were associated with APOE ε2 and ε4, respectively. Of these 68 (ε2) and 24 (ε4) were associated with prevalent Alzheimer's disease. Individual lipid species or lipidomic models of APOE genotypes mediated up to 30% and 10% of APOE ε2 and ε4 treatment effect, respectively.
DISCUSSION: Plasma lipid species mediate the treatment effect of APOE genotypes on Alzheimer's disease and as such represent a potential therapeutic target.
Original language | English |
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Pages (from-to) | 2151-2166 |
Number of pages | 16 |
Journal | Alzheimer's & dementia : the journal of the Alzheimer's Association |
Volume | 18 |
Issue number | 11 |
Early online date | 25 Jan 2022 |
DOIs | |
Publication status | Published - Nov 2022 |
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Dive into the research topics of 'APOE ε2 resilience for Alzheimer's disease is mediated by plasma lipid species: Analysis of three independent cohort studies'. Together they form a unique fingerprint.Projects
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The Busselton Family Heart Study
Moses, E. (Investigator 01), Meikle, P. (Investigator 02), Blangero, J. (Investigator 03), Melton, P. (Investigator 04), Hung, J. (Investigator 05), Beilby, J. (Investigator 06), Cadby, G. (Investigator 07), Dubé, M. P. (Investigator 08), Van Bockxmeer, F. (Investigator 09) & Watts, G. (Investigator 10)
NHMRC National Health and Medical Research Council
1/01/16 → 9/10/20
Project: Research