Evidence map›Paper›PMID 27372639›Full record

ArticleJournal of Alzheimer's disease : JAD2016

Fine Particulate Matter, Residential Proximity to Major Roads, and Markers of Small Vessel Disease in a Memory Study Population.

Elissa H Wilker, Sergi Martinez-Ramirez, Itai Kloog, Joel Schwartz, Elizabeth Mostofsky, Petros Koutrakis, Murray A Mittleman, Anand Viswanathan

Abstract read
In one paragraph

Article in Journal of Alzheimer's disease : JAD, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed, 4 pooled it
–field-weighted citation impact
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

29 citing papers in PubMed, 4 syntheses or guidelines pooled it.

  1. Pooled it
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  3. Pooled it
  4. Air Pollution and Dementia: A Systematic Review.Journal of Alzheimer's disease : JAD · 2019
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  20. Brain Fog: Does Air Pollution Make Us Less Productive?Environmental health perspectives · 2019
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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.

Elissa H WilkerCardiovascular Division, Beth Israel Deaconess Medical Center, Boston, MA, USA.
Sergi Martinez-RamirezHemorrhagic Stroke Research Group, Department of Neurology, Massachusetts General Hospital, Boston, MA, USA.
Itai KloogDepartment of Geography and Environmental Development, Ben Gurion University of the Negev, Beer Sheva, Israel.
Joel SchwartzDepartment of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, USA.
Elizabeth MostofskyCardiovascular Division, Beth Israel Deaconess Medical Center, Boston, MA, USA.
Petros KoutrakisDepartment of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA.
Murray A MittlemanCardiovascular Division, Beth Israel Deaconess Medical Center, Boston, MA, USA.
Anand ViswanathanHemorrhagic Stroke Research Group, Department of Neurology, Massachusetts General Hospital, Boston, MA, USA.

Funding

Translational Research Support CoreP30ES000002 · NIEHS · HARVARD UNIVERSITY (SCH OF PUBLIC HLTH) · PI Marc G Weisskopf · 1985 to 2026
$44.6M
THE ROLE OF ADVANCED CAA IN ALZHEIMER'S DEMENTIAP50AG005134 · NIA · MASSACHUSETTS GENERAL HOSPITAL · PI HYMAN, BRADLEY T. · 1985 to 2018
$42.1M
Harvard Clinical and Translational Science Center (UL1)UL1TR000170 · NCATS · HARVARD MEDICAL SCHOOL · PI NADLER, LEE MARSHALL · 2012 to 2013
$31.4M
Harvard Clinical and Translational Science CenterKL2TR001100 · NCATS · HARVARD MEDICAL SCHOOL · PI NADLER, LEE MARSHALL · 2013 to 2017
$8.5M
Traffic pollution, brain structure and cognitive functionR00ES022243 · NIEHS · BETH ISRAEL DEACONESS MEDICAL CENTER · PI WILKER, ELISSA · 2016 to 2018
$747k
Traffic pollution, brain structure and cognitive function: the role of subclinicaK99ES022243 · NIEHS · BETH ISRAEL DEACONESS MEDICAL CENTER · PI WILKER, ELISSA · 2013 to 2014
$180k
NCATS NIH HHS KL2 TR001100NCATS NIH HHS UL1 TR000170NIA NIH HHS P50 AG005134NIEHS NIH HHS K99 ES022243NIEHS NIH HHS P30 ES000002NIEHS NIH HHS R00 ES022243
6 · The paper itself

Abstract

backgroundLong-term exposure to ambient air pollution has been associated with impaired cognitive function and vascular disease in older adults, but little is known about these associations among people with concerns about memory loss.

objectiveTo examine associations between exposures to fine particulate matter and residential proximity to major roads and markers of small vessel disease.

methodsFrom 2004-2010, 236 participants in the Massachusetts Alzheimer's Disease Research Center Longitudinal Cohort participated in neuroimaging studies. Residential proximity to major roads and estimated 2003 residential annual average of fine particulate air pollution (PM2.5) were linked to measures of brain parenchymal fraction (BPF), white matter hyperintensities (WMH), and cerebral microbleeds. Associations were modeled using linear and logistic regression and adjusted for clinical and lifestyle factors.

resultsIn this population (median age [interquartile range] = 74 [12], 57% female) living in a region with median 2003 PM2.5 annual average below the current Environmental Protection Agency (EPA) standard, there were no associations between living closer to a major roadway or for a 2μg/m3 increment in PM2.5 and smaller BPF, greater WMH volume, or a higher odds of microbleeds. However, a 2μg/m3 increment in PM2.5 was associated with -0.19 (95% Confidence Interval (CI): -0.37, -0.005) lower natural log-transformed WMH volume. Other associations had wide confidence intervals.

conclusionsIn this population, where median 2003 estimated PM2.5 levels were below the current EPA standard, we observed no pattern of association between residential proximity to major roads or 2003 average PM2.5 and greater burden of small vessel disease or neurodegeneration.

Indexed as

Air PollutionEnvironmental ExposureHousingMotor VehiclesParticulate MatterAgedAir PollutantsBrainCerebrovascular DisordersFemaleGeography, MedicalHumansLinear ModelsLogistic ModelsLongitudinal StudiesMagnetic Resonance ImagingAir PollutantsParticulate MatterAir pollutionmicrobleedssmall vessel diseasewhite matter hyperintensities

Identifiers

PMID27372639
PMCPMC4992433

What OpenQuestion holds

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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.