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Herpes Simplex Virus, APOEɛ4, and Cognitive Decline in Old Age: Results from the Betula Cohort Study
Umeå Univ, Dept Community Med & Rehabil, Geriatr Med, Umeå, Sweden.
Umeå Univ, Dept Community Med & Rehabil, Geriatr Med, Umeå, Sweden.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Public Health and Caring Sciences, Geriatrics. Umeå Univ, Dept Community Med & Rehabil, Geriatr Med, Umeå, Sweden.ORCID iD: 0000-0003-3232-6227
Umeå Univ, Dept Clin Microbiol, Virol, Umeå, Sweden.
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2019 (English)In: Journal of Alzheimer's Disease, ISSN 1387-2877, E-ISSN 1875-8908, Vol. 67, no 1, p. 211-220Article in journal (Refereed) Published
Abstract [en]

Background: Herpes simplex virus (HSV) has been suggested to play a role in Alzheimer’s disease (AD) development.

Objective: The aim of the present study was to investigate the early AD-related symptom episodic memory decline in relation to HSV and carriage of allele 4 of the apolipoprotein E gene (APOE ɛ4) in a large population-based cohort with a long follow-up time.

Methods: The study included 3,413 persons, with longitudinal data available for 1,293 persons with a mean follow-up time of 11.6 years. The associations between HSV carriage, APOE ɛ4 carriage, and episodic memory was investigated at baseline, as well as in longitudinal analyses where individuals with and without HSV antibodies (HSV1/2 non-specific) were matched and episodic memory decline compared.

Results: Cross-sectional analyses revealed an age-dependent association of HSV carriage with lower episodic memory function, particularly among APOE ɛ4 carriers (p = 0.008). Longitudinal analyses showed an increased risk of episodic memory decline in HSV carriers (≥65 years: p < 0.001, all ages: non-significant), and a significant interaction between HSV and APOE ɛ4 for episodic memory decline (p < 0.001).

Conclusion: In this large population-based cohort study, both cross-sectional and longitudinal results support an association between HSV carriage and declining episodic memory function, especially among APOE ɛ4 carriers. The results strengthen the hypothesis that HSV is associated with AD development.

Place, publisher, year, edition, pages
IOS PRESS , 2019. Vol. 67, no 1, p. 211-220
Keywords [en]
Alzheimer's disease, APOE epsilon 4, apolipoprotein E4, cognitive impairment, cohort study, dementia, epidemiological study, episodic memory, herpes simplex virus
National Category
Geriatrics
Identifiers
URN: urn:nbn:se:uu:diva-377706DOI: 10.3233/JAD-171162ISI: 000457778000017PubMedID: 30636735OAI: oai:DiVA.org:uu-377706DiVA, id: diva2:1291565
Funder
Knut and Alice Wallenberg FoundationSwedish Research CouncilGun och Bertil Stohnes StiftelseMagnus Bergvall FoundationHans-Gabriel och Alice Trolle-Wachtmeisters stiftelse för medicinsk forskningThe Swedish Medical AssociationThe Kempe FoundationsAvailable from: 2019-02-25 Created: 2019-02-25 Last updated: 2019-02-25Bibliographically approved

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