Evidence map›Paper›PMID 32164736›Full record

ArticleRespiratory research2020

Cigarette smoke and electronic cigarettes differentially activate bronchial epithelial cells.

Christian Herr, Konstantinos Tsitouras, Julia Niederstraßer, Christina Backes, Christoph Beisswenger, Li Dong, Loïc Guillot, Andreas Keller, Robert Bals

Open access · goldAbstract read
In one paragraph

Article in Respiratory research, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed, 1 pooled it
4.3field-weighted citation impact, top 5% 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

29 citing papers in PubMed, 1 synthesis or guideline pooled it, 50 citations in OpenAlex.

  1. Lung Damage Caused by Heated Tobacco Products and Electronic Nicotine Delivery Systems: A Systematic Review.International journal of environmental research and public health · 2021
    Pooled it
  2. Article
  3. Article
  4. The respiratory epithelium in the era of vaping: insights fromEuropean respiratory review : an official journal of the European Respiratory Society · 2025
    Review
  5. Protocol for differentiating primary human small airway epithelial cells at the air-liquid interface.American journal of physiology. Lung cellular and molecular physiology · 2025
    Article
  6. Article
  7. Review
  8. Article
  9. Review
  10. Article
  11. Electronic cigarette exposure disrupts airway epithelial barrier function and exacerbates viral infection.American journal of physiology. Lung cellular and molecular physiology · 2023
    Article
  12. Article
  13. Article
  14. Review
  15. Article
  16. Article
  17. Article
  18. Predicting the pulmonary effects of long-term e-cigarette use: are the clouds clearing?European respiratory review : an official journal of the European Respiratory Society · 2022
    Review
  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

9 authors at 3 institutions in 3 countries.

Christian HerrDepartment of Internal Medicine V - Pulmonology, Allergology and Critical Care Medicine, Saarland University, D-66421, Homburg, Germany. christian.herr@uks.eu.ORCID http://orcid.org/0000-0001-9422-6569
Konstantinos TsitourasDepartment of Internal Medicine V - Pulmonology, Allergology and Critical Care Medicine, Saarland University, D-66421, Homburg, Germany.
Julia NiederstraßerDepartment of Internal Medicine V - Pulmonology, Allergology and Critical Care Medicine, Saarland University, D-66421, Homburg, Germany.
Christina BackesClinical Bioinformatics, Saarland University, University Hospital, 66123, Saarbrücken, Germany.
Christoph BeisswengerDepartment of Internal Medicine V - Pulmonology, Allergology and Critical Care Medicine, Saarland University, D-66421, Homburg, Germany.
Li DongDepartment of Clinical Laboratory, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai, 200065, China.
Loïc GuillotSorbonne Universités, UPMC Univ Paris 06, INSERM, Centre de Recherche Saint-Antoine (CRSA), 75012, Paris, France.
Andreas KellerClinical Bioinformatics, Saarland University, University Hospital, 66123, Saarbrücken, Germany.
Robert BalsDepartment of Internal Medicine V - Pulmonology, Allergology and Critical Care Medicine, Saarland University, D-66421, Homburg, Germany.
Saarland University · DEInserm · FRTongji University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe use of electronic cigarettes (ECIGs) is increasing, but the impact of ECIG-vapor on cellular processes like inflammation or host defense are less understood. The aim of the present study was to compare the acute effects of traditional cigarettes (TCIGs) and ECIG-exposure on host defense, inflammation, and cellular activation of cell lines and primary differentiated human airway epithelial cells (pHBE).

methodsWe exposed pHBEs and several cell lines to TCIG-smoke or ECIG-vapor. Epithelial host defense and barrier integrity were determined. The transcriptome of airway epithelial cells was compared by gene expression array analysis. Gene interaction networks were constructed and differential gene expression over all groups analyzed. The expression of several candidate genes was validated by qRT-PCR.

resultsBacterial killing, barrier integrity and the expression of antimicrobial peptides were not affected by ECIG-vapor compared to control samples. In contrast, TCIGs negatively affected host defense and reduced barrier integrity in a significant way. Furthermore ECIG-exposure significantly induced IL-8 secretion from Calu-3 cells but had no effect on NCI-H292 or primary cells. The gene expression based on array analysis distinguished TCIG-exposed cells from ECIG and room air-exposed samples.

conclusionThe transcriptome patterns of host defense and inflammatory genes are significantly distinct between ECIG-exposed and TCIG-treated cells. The overall effects of ECIGs on epithelial cells are less in comparison to TCIG, and ECIG-vapor does not affect host defense. Nevertheless, although acute exposure to ECIG-vapor induces inflammation, and the expression of S100 proteins, long term in vivo data is needed to evaluate the chronic effects of ECIG use.

Indexed as

Electronic Nicotine Delivery SystemsCell Line, TumorCells, CulturedCigarette SmokingHumansInflammation MediatorsRespiratory MucosaTobacco Smoke PollutionVapingInflammation MediatorsTobacco Smoke Pollution

Identifiers

PMID32164736
PMCPMC7068890
OpenAlexW3011214468

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.