Evidence map›Paper›PMID 31983527›Full record

ArticleThe Journal of allergy and clinical immunology2020

Exposure to diesel exhaust particles increases susceptibility to invasive pneumococcal disease.

Rebecca K Shears, Laura C Jacques, Georgia Naylor, Lisa Miyashita, Shadia Khandaker, Filipa Lebre, Ed C Lavelle, Jonathan Grigg, Neil French, Daniel R Neill and 1 more

Open access · hybridAbstract read
In one paragraph

Article in The Journal of allergy and clinical immunology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
2.9field-weighted citation impact, top 9% 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

21 citing papers in PubMed, 45 citations in OpenAlex.

  1. Article
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  5. Article
  6. Fine particulate matter manipulates immune response to exacerbate microbial pathogenesis in the respiratory tract.European respiratory review : an official journal of the European Respiratory Society · 2024
    Review
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  20. The Impact of Nanoparticles on Innate Immune Activation by Live Bacteria.International journal of molecular sciences · 2020
    Review
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

11 authors at 3 institutions in 2 countries.

Rebecca K ShearsBacterial Pathogenesis and Immunity Group, Institute of Infection and Global Health, University of Liverpool, Liverpool, United Kingdom.
Laura C JacquesBacterial Pathogenesis and Immunity Group, Institute of Infection and Global Health, University of Liverpool, Liverpool, United Kingdom.
Georgia NaylorBacterial Pathogenesis and Immunity Group, Institute of Infection and Global Health, University of Liverpool, Liverpool, United Kingdom.
Lisa MiyashitaCentre for Genomics and Child Health, Blizard Institute, Queen Mary University of London, London, United Kingdom.
Shadia KhandakerBacterial Pathogenesis and Immunity Group, Institute of Infection and Global Health, University of Liverpool, Liverpool, United Kingdom.
Filipa LebreAdjuvant Research Group, School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland.
Ed C LavelleAdjuvant Research Group, School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland.
Jonathan GriggCentre for Genomics and Child Health, Blizard Institute, Queen Mary University of London, London, United Kingdom.
Neil FrenchBacterial Pathogenesis and Immunity Group, Institute of Infection and Global Health, University of Liverpool, Liverpool, United Kingdom.
Daniel R NeillBacterial Pathogenesis and Immunity Group, Institute of Infection and Global Health, University of Liverpool, Liverpool, United Kingdom; Microbial Evolution, Genomics and Adaptation Group, Institute of Infection and Global Health, University of Liverpool, Liverpool, United Kingdom.
Aras KadiogluBacterial Pathogenesis and Immunity Group, Institute of Infection and Global Health, University of Liverpool, Liverpool, United Kingdom. Electronic address: A.Kadioglu@liverpool.ac.uk.
University of Liverpool · GBQueen Mary University of London · GBTrinity College Dublin · IE

Funding

Medical Research Council MR/P011284/1Wellcome TrustWellcome Trust 204457/Z/16/Z
6 · The paper itself

Abstract

backgroundThe World Health Organization estimates that air pollution is responsible for 7 million deaths per annum, with 7% of these attributable to pneumonia. Many of these fatalities have been linked to exposure to high levels of airborne particulates, such as diesel exhaust particles (DEPs).

objectivesWe sought to determine whether exposure to DEPs could promote the progression of asymptomatic nasopharyngeal carriage of Streptococcus pneumoniae to invasive pneumococcal disease.

methodsWe used mouse models and in vitro assays to provide a mechanistic understanding of the link between DEP exposure and pneumococcal disease risk, and we confirmed our findings by using induced sputum macrophages isolated from healthy human volunteers.

resultsWe demonstrate that inhaled exposure to DEPs disrupts asymptomatic nasopharyngeal carriage of S pneumoniae in mice, leading to dissemination to lungs and blood. Pneumococci are transported from the nasopharynx to the lungs following exposure to DEPs, leading to increased proinflammatory cytokine production, reduced phagocytic function of alveolar macrophages, and consequently, increased pneumococcal loads within the lungs and translocation into blood. These findings were confirmed by using DEP-exposed induced sputum macrophages isolated from healthy volunteers, demonstrating that impaired innate immune mechanisms following DEP exposure are also at play in humans.

conclusionLung inhaled DEPs increase susceptibility to pneumococcal disease by leading to loss of immunological control of pneumococcal colonisation, increased inflammation, tissue damage, and systemic bacterial dissemination.

Indexed as

AnimalsBacteremiaCarrier StateCells, CulturedDisease Models, AnimalDisease ProgressionDisease SusceptibilityHumansLungMacrophagesMiceMice, Inbred BALB CMice, Inbred C57BLNasopharynxParticulate MatterPhagocytosisParticulate MatterVehicle Emissionsparticulatespneumococcal diseasepneumococcuspneumoniapollutionStreptococcus pneumoniae

Identifiers

PMID31983527
PMCPMC7154500
OpenAlexW3003031591

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.