Evidence map›Paper›PMID 28596276›Full record

ArticleTobacco control2018

Comparing the cytotoxicity of electronic cigarette fluids, aerosols and solvents.

Rachel Z Behar, Yuhuan Wang, Prue Talbot

Open access · greenAbstract readComparative Study
In one paragraph

Article in Tobacco control, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 71 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
71citing papers in PubMed, 3 pooled it
5.5field-weighted citation impact, top 3% 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

71 citing papers in PubMed, 3 syntheses or guidelines pooled it, 128 citations in OpenAlex.

  1. Pulmonary effects of e-liquid flavors: a systematic review.Journal of toxicology and environmental health. Part B, Critical reviews · 2022
    Pooled it
  2. Pooled it
  3. Pooled it
  4. Article
  5. Human Primary Mesenchymal Stem Cells Fail to Recover Full Osteogenic Differentiation Potential Following Washout of Electronic Cigarette Aerosol Extracts.Nicotine & tobacco research : official journal of the Society for Research on Nicotine and Tobacco · 2026
    Article
  6. Article
  7. Review
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  9. The effects of flavored vaped e-liquids on cultured human macrophages derived from the central and peripheral nervous systems.Toxicology in vitro : an international journal published in association with BIBRA · 2025
    Article
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  13. Review
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  20. AnCurrent research in toxicology · 2024
    Article

11 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

3 authors at 1 institution in 1 country.

Rachel Z BeharCell Molecular and Developmental Biology Graduate Program, University of California, Riverside, California, USA.
Yuhuan WangDepartment of Cell Biology and Neuroscience, University of California, Riverside, California, USA.
Prue TalbotDepartment of Cell Biology and Neuroscience, University of California, Riverside, California, USA.
University of California, Riverside · US

Funding

Do Electronic Cigarettes Reduce Harm?R21DA037365 · NIDA · UNIVERSITY OF CALIFORNIA RIVERSIDE · PI TALBOT, PRUDENCE · 2014 to 2015
$408k
Electronic cigarettes: do they present health hazards?F31HL116121 · NHLBI · UNIVERSITY OF CALIFORNIA RIVERSIDE · PI BEHAR, RACHEL ZARINA · 2013 to 2016
$108k
NHLBI NIH HHS F31 HL116121NIDA NIH HHS R21 DA037365
6 · The paper itself

Abstract

backgroundAs thousands of electronic cigarette (e-cigarette) refill fluids continue to be formulated and distributed, there is a growing need to understand the cytotoxicity of the flavouring chemicals and solvents used in these products to ensure they are safe. The purpose of this study was to compare the cytotoxicity of e-cigarette refill fluids/solvents and their corresponding aerosols using in vitro cultured cells.

methodsE-cigarette refill fluids and do-it-yourself products were screened in liquid and aerosol form for cytotoxicity using the MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assay. The sensitivity of human pulmonary fibroblasts, lung epithelial cells (A549) and human embryonic stem cells to liquids and aerosols was compared. Aerosols were produced using Johnson Creek's Vea cartomizer style e-cigarette.

resultsA hierarchy of potency was established for the aerosolised products. Our data show that (1) e-cigarette aerosols can produce cytotoxic effects in cultured cells, (2) four patterns of cytotoxicity were found when comparing refill fluids and their corresponding aerosols, (3) fluids accurately predicted aerosol cytotoxicity 74% of the time, (4) stem cells were often more sensitive to aerosols than differentiated cells and (5) 91% of the aerosols made from refill fluids containing only glycerin were cytotoxic, even when produced at a low voltage.

conclusionsOur data show that various flavours/brands of e-cigarette refill fluids and their aerosols are cytotoxic and demonstrate the need for further evaluation of e-cigarette products to better understand their potential health effects.

Indexed as

Electronic Nicotine Delivery SystemsAerosolsCells, CulturedCell SurvivalDose-Response Relationship, DrugEmbryonic Stem CellsEpithelial CellsFibroblastsFlavoring AgentsHumansSolventsAerosolsFlavoring AgentsSolventsaerosolcytotoxicityelectronic cigarettesflavorsrefill fluidvegetable glycerin

Identifiers

PMID28596276
PMCPMC6397802
OpenAlexW2623563991

What OpenQuestion holds

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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.