Cited by 210Cytomegalovirus and herpesvirus researchDementia and Cognitive Impairment ResearchHerpesvirus Infections and Treatments

The Influence of Latent Viral Infection on Rate of Cognitive Decline over 4 Years

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Aiello, Allison E., Haan, Mary N., Blythe, Lynn, Moore, Kari, Gonzalez, Jeffrey M., Jagust, William·2006·Journal of the American Geriatrics Society

Abstract

OBJECTIVES: To examine whether cytomegalovirus (CMV) and herpes simplex virus type‐1 (HSV‐1) are associated with cognitive decline over a 4‐year period and to assess whether C‐reactive protein (CRP) modifies these relationships. DESIGN: Prospective cohort study over a 4‐year period. SETTING: Community‐dwelling elderly population. PARTICIPANTS: The sample was a subset (1,204/1,789) of participants in the Sacramento Area Latino Study on Aging (SALSA) aged 60 to 100. MEASUREMENTS: Participants were screened annually over a 4‐year period for cognitive function and episodic memory. Cognitive function was assessed using the modified Mini‐Mental State Examination, and episodic memory was assessed using a word list‐learning test of delayed recall. Baseline serum samples were assayed for levels of immunoglobulin G antibodies to CMV and HSV‐1 and for levels of CRP. RESULTS: There was a significantly higher rate of cognitive decline over the 4‐year period in subjects with the highest CMV antibody levels at baseline than in individuals with the lowest levels (β=−0.053, standard error =0.018; P =.003), after controlling for age, sex, education, income, and chronic health conditions. There was no association between HSV‐1 antibody levels and cognitive decline. CRP did not modify the relationship between viral antibody levels and cognitive decline. CONCLUSION: This is the first study to show that individuals with higher levels of antibody to CMV experience a more‐rapid rate of cognitive decline than those with lower levels. Understanding the mechanisms by which CMV influences cognition may aid development of intervention strategies targeting infection, viral reactivation, and immune response over the life course.

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Crossref · 10.1111/j.1532-5415.2006.00796.x

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  • In older participants of Latin American descent in the SALSA study, those with the highest CMV antibody levels had more cognitive decline relative to the lowest levels.

    “Similarly, in older participants of Latin American descent in the SALSA study in the United States [55], those with the highest CMV antibody levels had more cognitive decline relative to the lowest levels.”
  • Mechanisms underlying viral pathogenesis in these conditions may include a direct viral effect or indirect mechanisms, such as inflammation, epigenetic changes, and hypercoagulable changes, that may impact brain structure and function in healthy or cognitively impaired individuals.

    “Mechanisms underlying viral pathogenesis in these conditions may include a direct viral effect or indirect mechanisms, such as inflammation, epigenetic changes, and hypercoagulable changes, that may impact on brain structure and function in healthy or in cognitively impaired individuals [6, 11–15].”
  • The interaction between viral presence and AD may also operate through a specific mechanism within the core pathogenesis, hastening amyloid overproduction.

    “This interaction may also operate through a specific mechanism within the core pathogenesis, hastening amyloid overproduction [10, 12].”
  • According to the viral hypothesis of AD, the interaction between viral presence and AD may be non-specifically associated with up-regulation of inflammatory responses and oxidative stress.

    “According to the ‘viral hypothesis of AD’, this interaction may be non-specifically associated with up-regulation of inflammatory responses and oxidative stress, which are secondary, but relevant components of the amyloid cascade.”

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Authors
Aiello, A. E., Haan, M. N., Blythe, L., Moore, K., Gonzalez, J. M., & Jagust, W.
Affiliations
University of Michigan (US)
Corresponding author
Aiello, Allison E.
Venue
Journal of the American Geriatrics Society
Publisher
Wiley
Published
2006-07
Volume
54
Issue
7
Pages
1046-1054
ISSN
  • 0002-8614 (ISSN-L)
  • 1532-5415
OpenAlex
W1946070691
Cited by
210
References
81
Citations by year
2026: 7 · 2025: 9 · 2024: 10 · 2023: 11 · 2022: 14 · 2021: 14 · 2020: 8 · 2019: 10 · 2018: 11 · 2017: 7 · 2016: 10 · 2015: 16 · 2014: 11 · 2013: 14 · 2012: 12
FWCI
6.51
Type
journal article
Language
en
Open access
Locations
  • Journal of the American Geriatrics Society (publishedVersion)
  • PubMed (publishedVersion)
  • Deep Blue (University of Michigan) (submittedVersion)
Funders
  • National Institutes of Health (DK20572)
  • National Institute on Aging (AG-12975, R01AG012975, R03AG033751)
  • National Institute of Diabetes and Digestive and Kidney Diseases (DK-60753, P60DK020572, NIH5P60, R01DK060753)
Topics
  • Health Sciences › Medicine › Epidemiology › Cytomegalovirus and herpesvirus research
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Health Sciences › Medicine › Epidemiology › Herpesvirus Infections and Treatments
Keywords
cytomegalovirus, herpes simplex virus type 1, viral latency, cognitive decline, C-reactive protein, immunoglobulin G antibodies, episodic memory, older adults, aging, viral reactivation, immune response
MeSH terms
Aged, Aged, 80 and over, Antibodies, Viral, C-Reactive Protein, California, Cognition Disorders, Cytomegalovirus Infections, Dose-Response Relationship, Immunologic, Female, Herpes Simplex, Humans, Immunoglobulin G, Male, Middle Aged, Prospective Studies, Time Factors, Effect Modifier, Epidemiologic, Mexican Americans, Herpesvirus 1, Human

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