期刊
ALZHEIMERS RESEARCH & THERAPY
卷 13, 期 1, 页码 -出版社
BMC
DOI: 10.1186/s13195-020-00754-8
关键词
Alzheimer's disease; Polygenic risk score; Plasma phosphorylated tau 181
资金
- Swedish Research Council [2018-02532, 2017-00915]
- Alzheimer Drug Discovery Foundation (ADDF), USA [RDAPB-201809-2016615]
- Swedish Alzheimer Foundation [AF-930627, AF-742881]
- Swedish Brain Foundation [FO2020-0240, FO2017-0243]
- European Union Joint Program for Neurodegenerative Disorders [JPND2019-466-236]
- European Research Council [681712]
- Swedish State Support for Clinical Research [ALFGBG-720931, ALFGBG-715986]
- UK Dementia Research Institute at UCL
- BrightFocus Foundation [A2020812F]
- Swedish Dementia Foundation
- Gamla Tjanarinnor Foundation
- Aina (Ann) Wallstroms and Mary-Ann Sjobloms Foundation
- Agneta PrytzFolkes & Gosta Folkes Foundation [2020-00124]
- Gun and Bertil Stohnes Foundation
- Anna Lisa and Brother Bjornsson's Foundation
- European Union's Horizon 2020 Research and Innovation Program under the Marie Sklodowska-Curie action grant [752310]
- Instituto de Salud Carlos III [PI19/00155]
- Spanish Ministry of Science, Innovation and Universities (Juan de la Cierva Programme grant) [IJC2018-037478-I]
- Paulo Foundation
- Orion Research Foundation
- Magnus Bergvalls Foundation
- Hjalmar Svenssons Research Foundation
- van Geest Endowment Fund
- National Institute for Health Research (NIHR) Biomedical Research Centre at South London and Maudsley NHS Foundation Trust
- King's College London
- Gothenburg University Library
The study revealed that polygenic risk for AD, including APOE, was associated with plasma p-tau181 regardless of diagnostic or A beta pathology status, while polygenic risk for AD beyond APOE was only linked to plasma p-tau181 in individuals with MCI and A beta positivity.
BackgroundRecent studies suggest that plasma phosphorylated tau181 (p-tau181) is a highly specific biomarker for Alzheimer's disease (AD)-related tau pathology. It has great potential for the diagnostic and prognostic evaluation of AD, since it identifies AD with the same accuracy as tau PET and CSF p-tau181 and predicts the development of AD dementia in cognitively unimpaired (CU) individuals and in those with mild cognitive impairment (MCI). Plasma p-tau181 may also be used as a biomarker in studies exploring disease pathogenesis, such as genetic or environmental risk factors for AD-type tau pathology. The aim of the present study was to investigate the relation between polygenic risk scores (PRSs) for AD and plasma p-tau181.MethodsData from the Alzheimer's Disease Neuroimaging Initiative (ADNI) was used to examine the relation between AD PRSs, constructed based on findings in recent genome-wide association studies, and plasma p-tau181, using linear regression models. Analyses were performed in the total sample (n=818), after stratification on diagnostic status (CU (n=236), MCI (n=434), AD dementia (n=148)), and after stratification on A beta pathology status (A beta positives (n=322), A beta negatives (n=409)).ResultsAssociations between plasma p-tau181 and APOE PRSs (p=3e(-18)-7e(-15)) and non-APOE PRSs (p=3e(-4)-0.03) were seen in the total sample. The APOE PRSs were associated with plasma p-tau181 in all diagnostic groups (CU, MCI, and AD dementia), while the non-APOE PRSs were associated only in the MCI group. The APOE PRSs showed similar results in amyloid-beta (A beta)-positive and negative individuals (p=5e(-5)-1e(-3)), while the non-APOE PRSs were associated with plasma p-tau181 in A beta positives only (p=0.02).ConclusionsPolygenic risk for AD including APOE was found to associate with plasma p-tau181 independent of diagnostic and A beta pathology status, while polygenic risk for AD beyond APOE was associated with plasma p-tau181 only in MCI and A beta -positive individuals. These results extend the knowledge about the relation between genetic risk for AD and p-tau181, and further support the usefulness of plasma p-tau181 as a biomarker of AD.
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