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Traffic-related air pollution and dementia incidence in the Adult Changes in Thought Study.
Blanco, Magali N; Shaffer, Rachel M; Li, Ge; Adar, Sara D; Carone, Marco; Szpiro, Adam A; Kaufman, Joel D; Larson, Timothy V; Hajat, Anjum; Larson, Eric B; Crane, Paul K; Sheppard, Lianne.
Afiliación
  • Blanco MN; Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA, USA. Electronic address: magali@uw.edu.
  • Shaffer RM; Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA, USA.
  • Li G; VA Northwest Network Mental Illness Research, Education, and Clinical Center, Virginia Puget Sound Health Care System, Seattle, WA, USA; Geriatric Research, Education, and Clinical Center, Virginia Puget Sound Health Care System, Seattle, WA, USA; Department of Psychiatry and Behavioral Sciences, Un
  • Adar SD; Department of Epidemiology, University of Michigan, Ann Arbor, MI, USA.
  • Carone M; Department of Biostatistics, University of Washington, Seattle, WA, USA.
  • Szpiro AA; Department of Biostatistics, University of Washington, Seattle, WA, USA.
  • Kaufman JD; Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA, USA; Department of Epidemiology, University of Washington, Seattle, WA, USA; Department of Medicine, University of Washington, Seattle, WA, USA.
  • Larson TV; Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA, USA; Department of Civil & Environmental Engineering, University of Washington, Seattle, WA, USA.
  • Hajat A; Department of Epidemiology, University of Washington, Seattle, WA, USA.
  • Larson EB; Department of Medicine, University of Washington, Seattle, WA, USA.
  • Crane PK; Department of Medicine, University of Washington, Seattle, WA, USA.
  • Sheppard L; Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA, USA; Department of Biostatistics, University of Washington, Seattle, WA, USA.
Environ Int ; 183: 108418, 2024 Jan.
Article en En | MEDLINE | ID: mdl-38185046
ABSTRACT

BACKGROUND:

While epidemiologic evidence links higher levels of exposure to fine particulate matter (PM2.5) to decreased cognitive function, fewer studies have investigated links with traffic-related air pollution (TRAP), and none have examined ultrafine particles (UFP, ≤100 nm) and late-life dementia incidence.

OBJECTIVE:

To evaluate associations between TRAP exposures (UFP, black carbon [BC], and nitrogen dioxide [NO2]) and late-life dementia incidence.

METHODS:

We ascertained dementia incidence in the Seattle-based Adult Changes in Thought (ACT) prospective cohort study (beginning in 1994) and assessed ten-year average TRAP exposures for each participant based on prediction models derived from an extensive mobile monitoring campaign. We applied Cox proportional hazards models to investigate TRAP exposure and dementia incidence using age as the time axis and further adjusting for sex, self-reported race, calendar year, education, socioeconomic status, PM2.5, and APOE genotype. We ran sensitivity analyses where we did not adjust for PM2.5 and other sensitivity and secondary analyses where we adjusted for multiple pollutants, applied alternative exposure models (including total and size-specific UFP), modified the adjustment covariates, used calendar year as the time axis, assessed different exposure periods, dementia subtypes, and others.

RESULTS:

We identified 1,041 incident all-cause dementia cases in 4,283 participants over 37,102 person-years of follow-up. We did not find evidence of a greater hazard of late-life dementia incidence with elevated levels of long-term TRAP exposures. The estimated hazard ratio of all-cause dementia was 0.98 (95 % CI 0.92-1.05) for every 2000 pt/cm3 increment in UFP, 0.95 (0.89-1.01) for every 100 ng/m3 increment in BC, and 0.96 (0.91-1.02) for every 2 ppb increment in NO2. These findings were consistent across sensitivity and secondary analyses.

DISCUSSION:

We did not find evidence of a greater hazard of late-life dementia risk with elevated long-term TRAP exposures in this population-based prospective cohort study.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Demencia / Contaminantes Atmosféricos / Contaminación del Aire Tipo de estudio: Incidence_studies / Observational_studies / Prognostic_studies / Risk_factors_studies Límite: Adult / Humans Idioma: En Revista: Environ Int Año: 2024 Tipo del documento: Article Pais de publicación: Países Bajos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Demencia / Contaminantes Atmosféricos / Contaminación del Aire Tipo de estudio: Incidence_studies / Observational_studies / Prognostic_studies / Risk_factors_studies Límite: Adult / Humans Idioma: En Revista: Environ Int Año: 2024 Tipo del documento: Article Pais de publicación: Países Bajos