Evidence map›Paper›PMID 25244293›Full record

ArticlePloS one2014

Electronic cigarette liquid increases inflammation and virus infection in primary human airway epithelial cells.

Qun Wu, Di Jiang, Maisha Minor, Hong Wei Chu

2 registry-linked trialsAbstract read
In one paragraph

Article in PloS one, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 2 registered trials, which are not on this map. Cited by 138 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
138citing papers in PubMed, 3 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.

NCT02635620 completednot on this mapstarted 2015, after this paper: background citation

Changes in Lung Function Parameters, Bronchial Reactivity, State of Health and Smoking Behaviour Associated With Changing From Conventional Smoking to Electronic Cigarettes

TypeobservationalSponsorLudwig-Maximilians - University of MunichRan2015 to 2018Enrolled80ConditionsExposure to Electronic Cigarettes
NCT02739438 unknown statusnot on this mapstarted 2017, after this paper: background citation

The Study of ELEctronic Cigarette Toxicity in a Human Model in Vivo Model of Inflammation and Vascular Dysfunction (SELECT)

TypeobservationalSponsorQueen's University, BelfastRan2017 to 2019Enrolled30ConditionsAcute Lung InjuryArmsElectronic cigarette use, Cigarette use, Control group
3 · Its place in the literature

Who cites it

138 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  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. Pooled it
  3. Overview of Electronic Nicotine Delivery Systems: A Systematic Review.American journal of preventive medicine · 2017
    Pooled it
  4. Review
  5. Review
  6. Article
  7. E-cigarette use and Barrett's esophagus: evaluating a new risk in the era of vaping.Esophagus : official journal of the Japan Esophageal Society · 2026
    Article
  8. Article
  9. The triple-hit hypothesis: exploring pulmonary e-cigarette, PMEuropean respiratory review : an official journal of the European Respiratory Society · 2026
    Review
  10. Vaping-related lung disease: a narrative review.Journal of thoracic disease · 2026
    Review
  11. Review
  12. Review
  13. NAM journal · 2025
    Article
  14. Review
  15. Review
  16. Review
  17. The Toxicological Effects of e-Cigarette Use in the Upper Airway: A Scoping Review.Otolaryngology--head and neck surgery : official journal of American Academy of Otolaryngology-Head and Neck Surgery · 2024
    Article
  18. Article
  19. Electronic cigarette vapor disrupts key metabolic pathways in human lung epithelial cells.Saudi pharmaceutical journal : SPJ : the official publication of the Saudi Pharmaceutical Society · 2024
    Article
  20. Electronic cigarette exposure disrupts airway epithelial barrier function and exacerbates viral infection.American journal of physiology. Lung cellular and molecular physiology · 2023
    Article

78 more citing papers are in PubMed but not listed here.

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

4 authors.

Qun WuDepartment of Medicine, National Jewish Health, Denver, Colorado, United States of America.
Di JiangDepartment of Medicine, National Jewish Health, Denver, Colorado, United States of America.
Maisha MinorDepartment of Medicine, National Jewish Health, Denver, Colorado, United States of America.
Hong Wei ChuDepartment of Medicine, National Jewish Health, Denver, Colorado, United States of America.

Funding

SPLUNC1 protein in host defense against Mycoplasma pneumoniae infectionR01HL088264 · NHLBI · NATIONAL JEWISH HEALTH · PI CHU, HONG W · 2009 to 2012
$1.8M
NHLBI NIH HHS R01 HL088264
6 · The paper itself

Abstract

BACKGROUND/

objectiveThe use of electronic cigarettes (e-cigarettes) is rapidly increasing in the United States, especially among young people since e-cigarettes have been perceived as a safer alternative to conventional tobacco cigarettes. However, the scientific evidence regarding the human health effects of e-cigarettes on the lung is extremely limited. The major goal of our current study is to determine if e-cigarette use alters human young subject airway epithelial functions such as inflammatory response and innate immune defense against respiratory viral (i.e., human rhinovirus, HRV) infection. METHODOLOGY/MAIN

resultsWe examined the effects of e-cigarette liquid (e-liquid) on pro-inflammatory cytokine (e.g., IL-6) production, HRV infection and host defense molecules (e.g., short palate, lung, and nasal epithelium clone 1, SPLUNC1) in primary human airway epithelial cells from young healthy non-smokers. Additionally, we examined the role of SPLUNC1 in lung defense against HRV infection using a SPLUNC1 knockout mouse model. We found that nicotine-free e-liquid promoted IL-6 production and HRV infection. Addition of nicotine into e-liquid further amplified the effects of nicotine-free e-liquid. Moreover, SPLUNC1 deficiency in mice significantly increased lung HRV loads. E-liquid inhibited SPLUNC1 expression in primary human airway epithelial cells. These findings strongly suggest the deleterious health effects of e-cigarettes in the airways of young people. Our data will guide future studies to evaluate the impact of e-cigarettes on lung health in human populations, and help inform the public about potential health risks of e-cigarettes.

Indexed as

AnimalsBronchiElectronic Nicotine Delivery SystemsEpithelial CellsHumansInflammationInterleukin-6MiceMice, KnockoutVirus DiseasesInterleukin-6

Identifiers

PMID25244293
PMCPMC4171526

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

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.