Evidence map›Paper›PMID 33971107›Full record

ArticleEnvironmental health perspectives2021

The Effects of Chronic Exposure to Ambient Traffic-Related Air Pollution on Alzheimer's Disease Phenotypes in Wildtype and Genetically Predisposed Male and Female Rats.

Kelley T Patten, Anthony E Valenzuela, Christopher Wallis, Elizabeth L Berg, Jill L Silverman, Keith J Bein, Anthony S Wexler, Pamela J Lein

Open access · diamondAbstract read
In one paragraph

Article in Environmental health perspectives, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 56 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
56citing papers in PubMed, 1 pooled it
5.7field-weighted citation impact, top 3% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

56 citing papers in PubMed, 1 synthesis or guideline pooled it, 84 citations in OpenAlex.

  1. Air Pollution and Brain Tumors in Children. A Systematic Review.Current environmental health reports · 2026
    Pooled it
  2. Urban PMMolecular neurobiology · 2026
    Article
  3. PMiScience · 2026
    Review
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  20. Estimating the Effects of Hypothetical AmbientEnvironmental health perspectives · 2025
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 2 institutions in 1 country.

Kelley T PattenDepartment of Molecular Biosciences, University of California Davis (UC Davis) School of Veterinary Medicine, Davis, California, USA.
Anthony E ValenzuelaDepartment of Molecular Biosciences, University of California Davis (UC Davis) School of Veterinary Medicine, Davis, California, USA.
Christopher WallisAir Quality Research Center, UC Davis, Davis, California, USA.
Elizabeth L BergDepartment of Psychiatry and Behavioral Sciences, UC Davis School of Medicine, Sacramento, California, USA.
Jill L SilvermanDepartment of Psychiatry and Behavioral Sciences, UC Davis School of Medicine, Sacramento, California, USA.
Keith J BeinAir Quality Research Center, UC Davis, Davis, California, USA.
Anthony S WexlerAir Quality Research Center, UC Davis, Davis, California, USA.
Pamela J LeinDepartment of Molecular Biosciences, University of California Davis (UC Davis) School of Veterinary Medicine, Davis, California, USA.
University of California, Davis · USQuality Research · US

Funding

UC Davis Alzheimer's Disease Core CenterP30AG010129 · NIA · UNIVERSITY OF CALIFORNIA DAVIS · PI DECARLI, CHARLES · 1991 to 2020
$28.3M
UC Davis Environmental Health Sciences Core CenterP30ES023513 · NIEHS · UNIVERSITY OF CALIFORNIA AT DAVIS · PI Ameer Taha · 2015 to 2026
$26.0M
Research Project: Pathologic Significance of Maternal AutoantibodiesP50HD103526 · NICHD · UNIVERSITY OF CALIFORNIA AT DAVIS · PI LEONARD J. ABBEDUTO, Melissa Dawn Bauman · 2020 to 2026
$9.7M
ENVIRONMENTAL TOXICOLOGYT32ES007059 · NIEHS · UNIVERSITY OF CALIFORNIA DAVIS · PI Laura S Van Winkle · 1985 to 2026
$7.9M
Learning, Memory, and Plasticity (LaMP) Training ProgramT32MH112507 · NIMH · UNIVERSITY OF CALIFORNIA AT DAVIS · PI Karen Zito · 2017 to 2026
$2.4M
Does air pollution increase risk of AD in a genetically susceptible animal model?R21ES026515 · NIEHS · UNIVERSITY OF CALIFORNIA AT DAVIS · PI LEIN, PAMELA J · 2016 to 2017
$432k
Functional Outcomes of Interactions between an ASD-Relevant Gene and Air PollutionR21ES025570 · NIEHS · UNIVERSITY OF CALIFORNIA AT DAVIS · PI SILVERMAN, JILL LYNN · 2015 to 2016
$431k
Acquisition of a Cytoviva hyperspectral microscopy systemS10OD021789 · OD · UNIVERSITY OF CALIFORNIA AT DAVIS · PI VAN WINKLE, LAURA S · 2017 to 2017
$226k
NIA NIH HHS P30 AG010129NICHD NIH HHS P50 HD103526NIEHS NIH HHS P30 ES023513NIEHS NIH HHS R21 ES025570NIEHS NIH HHS R21 ES026515NIEHS NIH HHS T32 ES007059NIH HHS S10 OD021789NIMH NIH HHS T32 MH112507
6 · The paper itself

Abstract

backgroundEpidemiological data link traffic-related air pollution (TRAP) to increased risk of Alzheimer's disease (AD). Preclinical data corroborating this association are largely from studies of male animals exposed acutely or subchronically to high levels of isolated fractions of TRAP. What remains unclear is whether chronic exposure to ambient TRAP modifies AD risk and the influence of sex on this interaction.

objectivesThis study sought to assess effects of chronic exposure to ambient TRAP on the time to onset and severity of AD phenotypes in a preclinical model and to determine whether sex or genetic susceptibility influences outcomes.

methodsMale and female TgF344-AD rats that express human AD risk genes and wildtype littermates were housed in a vivarium adjacent to a heavily trafficked tunnel in Northern California and exposed for up to 14 months to filtered air (FA) or TRAP drawn from the tunnel and delivered to animals unchanged in real time. Refractive particles in the brain and AD phenotypes were quantified in 3-, 6-, 10-, and 15-month-old animals using hyperspectral imaging, behavioral testing, and neuropathologic measures.

resultsParticulate matter (PM) concentrations in TRAP exposure chambers fluctuated with traffic flow but remained below 24-h PM with aerodynamic diameter less than or equal to 2.5 micrometers ( DISCUSSION: These data demonstrate that chronic exposure to ambient TRAP promoted AD phenotypes in wildtype and genetically susceptible rats. TRAP effects varied according to age, sex, and genotype, suggesting that AD progression depends on complex interactions between environment and genetics. These findings suggest current

Indexed as

Air PollutionAlzheimer DiseaseTraffic-Related PollutionAnimalsFemaleGenetic Predisposition to DiseaseMalePhenotypeRats

Identifiers

PMID33971107
PMCPMC8110309
OpenAlexW3162054665

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.