Evidence map›Paper›PMID 22345648›Full record

ArticleJournal of immunology (Baltimore, Md. : 1950)2012

Suppression of the NF-κB pathway by diesel exhaust particles impairs human antimycobacterial immunity.

Srijata Sarkar, Youngmia Song, Somak Sarkar, Howard M Kipen, Robert J Laumbach, Junfeng Zhang, Pamela A Ohman Strickland, Carol R Gardner, Stephan Schwander

Abstract read
In one paragraph

Article in Journal of immunology (Baltimore, Md. : 1950), 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 50 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
50citing papers in PubMed, 2 pooled it
5.2field-weighted citation impact, top 4% 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

50 citing papers in PubMed, 2 syntheses or guidelines pooled it, 81 citations in OpenAlex.

  1. Pooled it
  2. Effects of Air Pollution on Lung Innate Lymphoid Cells: Review of In Vitro and In Vivo Experimental Studies.International journal of environmental research and public health · 2019
    Pooled it
  3. Article
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  8. Exposure to Urban Air Pollution Particulate Matter Modifies Th1/Th2American journal of respiratory cell and molecular biology · 2025
    Article
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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

9 authors at 1 institution in 1 country.

Srijata SarkarDepartment of Environmental and Occupational Health, University of Medicine and Dentistry of New Jersey-School of Public Health, Piscataway, NJ 08854, USA.
Youngmia Song
Somak Sarkar
Howard M Kipen
Robert J Laumbach
Junfeng Zhang
Pamela A Ohman Strickland
Carol R Gardner
Stephan Schwander
Environmental and Occupational Health Sciences Institute · US

Funding

Translational Research Support CoreP30ES005022 · NIEHS · UNIV OF MED/DENT NJ-R W JOHNSON MED SCH · PI HELMUT ZARBL · 1988 to 2026
$47.4M
Air Pollution Particle Effects on Human Antimycobacterial ImmunityR01ES020382 · NIEHS · UNIV OF MED/DENT NJ-SCH OF PUBLIC HEALTH · PI STEPHAN K SCHWANDER · 2012 to 2026
$5.3M
Scientific CoreU19ES019536 · NIEHS · UNIVERSITY OF SOUTHERN CALIFORNIA · PI CHUNG, KIAN FAN · 2010 to 2014
$4.6M
Mechanisms of Responses to Diesel Exhaust and StressK08ES013520 · NIEHS · UNIV OF MED/DENT NJ-R W JOHNSON MED SCH · PI LAUMBACH, ROBERT JOHN · 2005 to 2009
$711k
Diesel Exhaust Particle Effects on Human Immunity to Mycobacterium tuberculosisR21ES016928 · NIEHS · UNIV OF MED/DENT NJ-SCH OF PUBLIC HEALTH · PI SCHWANDER, STEPHAN K · 2008 to 2010
$439k
NIEHS NIH HHS 5R21ES16928-2NIEHS NIH HHS K08 ES013520NIEHS NIH HHS P30 ES005022NIEHS NIH HHS P30ES005022NIEHS NIH HHS R01 ES020382NIEHS NIH HHS R21 ES016928NIEHS NIH HHS U19 ES019536NIEHS NIH HHS U19ES019536
6 · The paper itself

Abstract

Epidemiological studies suggest that chronic exposure to air pollution increases susceptibility to respiratory infections, including tuberculosis in humans. A possible link between particulate air pollutant exposure and antimycobacterial immunity has not been explored in human primary immune cells. We hypothesized that exposure to diesel exhaust particles (DEP), a major component of urban fine particulate matter, suppresses antimycobacterial human immune effector cell functions by modulating TLR-signaling pathways and NF-κB activation. We show that DEP and H37Ra, an avirulent laboratory strain of Mycobacterium tuberculosis, were both taken up by the same peripheral human blood monocytes. To examine the effects of DEP on M. tuberculosis-induced production of cytokines, PBMC were stimulated with DEP and M. tuberculosis or purified protein derivative. The production of M. tuberculosis and purified protein derivative-induced IFN-γ, TNF-α, IL-1β, and IL-6 was reduced in a DEP dose-dependent manner. In contrast, the production of anti-inflammatory IL-10 remained unchanged. Furthermore, DEP stimulation prior to M. tuberculosis infection altered the expression of TLR3, -4, -7, and -10 mRNAs and of a subset of M. tuberculosis-induced host genes including inhibition of expression of many NF-κB (e.g., CSF3, IFNG, IFNA, IFNB, IL1A, IL6, and NFKBIA) and IFN regulatory factor (e.g., IFNG, IFNA1, IFNB1, and CXCL10) pathway target genes. We propose that DEP downregulate M. tuberculosis-induced host gene expression via MyD88-dependent (IL6, IL1A, and PTGS2) as well as MyD88-independent (IFNA, IFNB) pathways. Prestimulation of PBMC with DEP suppressed the expression of proinflammatory mediators upon M. tuberculosis infection, inducing a hyporesponsive cellular state. Therefore, DEP alters crucial components of antimycobacterial host immune responses, providing a possible mechanism by which air pollutants alter antimicrobial immunity.

Indexed as

NF-kappa BAdultApoptosisCell SurvivalFemaleGene Expression RegulationHumansMaleMicroscopy, Electron, TransmissionMiddle AgedMonocytesMycobacterium tuberculosisParticulate MatterReal-Time Polymerase Chain ReactionReverse Transcriptase Polymerase Chain ReactionSignal TransductionNF-kappa BParticulate MatterVehicle Emissions

Identifiers

PMID22345648
PMCPMC3293992
OpenAlexW2122790942

What OpenQuestion holds

Textmetadata
LicenceTDM
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.