Evidence map›Paper›PMID 19718433›Full record

ArticlePloS one2009

Impact of cigarette smoke exposure on innate immunity: a Caenorhabditis elegans model.

Rebecca M Green, Fabienne Gally, Jonathon G Keeney, Scott Alper, Bifeng Gao, Min Han, Richard J Martin, Andrew R Weinberger, Stephanie R Case, Maisha N Minor and 1 more

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 2 pooled it
1.0field-weighted citation impact, top 28% 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, 2 syntheses or guidelines pooled it, 37 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Article
  5. Review
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  7. Why new biology must be uncovered to advance therapeutic strategies for chronic obstructive pulmonary disease.American journal of physiology. Lung cellular and molecular physiology · 2021
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  8. Cigarette smoke extract modulatesAmerican journal of physiology. Lung cellular and molecular physiology · 2020
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  9. Article
  10. Air Pollution Alters Caenorhabditis elegans Development and Lifespan: Responses to Traffic-Related Nanoparticulate Matter.The journals of gerontology. Series A, Biological sciences and medical sciences · 2019
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  13. Global Proteomics RevealedFrontiers in cellular and infection microbiology · 2017
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  17. Review
  18. FABP5 deficiency enhances susceptibility to H1N1 influenza A virus-induced lung inflammation.American journal of physiology. Lung cellular and molecular physiology · 2013
    Article
  19. Article
  20. 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

11 authors at 3 institutions in 1 country.

Rebecca M GreenDepartment of Medicine, National Jewish Health, Denver, Colorado, United States of America.
Fabienne Gally
Jonathon G Keeney
Scott Alper
Bifeng Gao
Min Han
Richard J Martin
Andrew R Weinberger
Stephanie R Case
Maisha N Minor
Hong Wei Chu
University of Colorado Denver · USNational Jewish Health · USUniversity of Colorado Boulder · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundCigarette smoking is the major cause of chronic obstructive pulmonary disease (COPD) and lung cancer. Respiratory bacterial infections have been shown to be involved in the development of COPD along with impaired airway innate immunity. METHODOLOGY/PRINCIPAL

findingsTo address the in vivo impact of cigarette smoke (CS) exclusively on host innate defense mechanisms, we took advantage of Caenorhabditis elegans (C. elegans), which has an innate immune system but lacks adaptive immune function. Pseudomonas aeruginosa (PA) clearance from intestines of C. elegans was dampened by CS. Microarray analysis identified 6 candidate genes with a 2-fold or greater reduction after CS exposure, that have a human orthologue, and that may participate in innate immunity. To confirm a role of CS-down-regulated genes in the innate immune response to PA, RNA interference (RNAi) by feeding was carried out in C. elegans to inhibit the gene of interest, followed by PA infection to determine if the gene affected innate immunity. Inhibition of lbp-7, which encodes a lipid binding protein, resulted in increased levels of intestinal PA. Primary human bronchial epithelial cells were shown to express mRNA of human Fatty Acid Binding Protein 5 (FABP-5), the human orthologue of lpb-7. Interestingly, FABP-5 mRNA levels from human smokers with COPD were significantly lower (p = 0.036) than those from smokers without COPD. Furthermore, FABP-5 mRNA levels were up-regulated (7-fold) after bacterial (i.e., Mycoplasma pneumoniae) infection in primary human bronchial epithelial cell culture (air-liquid interface culture).

conclusionsOur results suggest that the C. elegans model offers a novel in vivo approach to specifically study innate immune deficiencies resulting from exposure to cigarette smoke, and that results from the nematode may provide insight into human airway epithelial cell biology and cigarette smoke exposure.

Indexed as

Immunity, InnateModels, AnimalNicotianaSmokeAnimalsCaenorhabditis elegansCotinineNicotinePseudomonas aeruginosaRNA InterferenceCotinineNicotineSmoke

Identifiers

PMID19718433
PMCPMC2729919
OpenAlexW2017866996

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.