Evidence map›Paper›PMID 34009373›Full record

ArticleToxicological sciences : an official journal of the Society of Toxicology2021

Firsthand and Secondhand Exposure Levels of Maltol-Flavored Electronic Nicotine Delivery System Vapors Disrupt Amino Acid Metabolism.

Zachery R Jarrell, Matthew Ryan Smith, Xiaojia He, Michael Orr, Dean P Jones, Young-Mi Go

Open access · greenAbstract read
In one paragraph

Article in Toxicological sciences : an official journal of the Society of Toxicology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
1.2field-weighted citation impact, top 24% 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

13 citing papers in PubMed, 20 citations in OpenAlex.

  1. Article
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  4. Environmental basis for early onset breast cancer.Reproductive toxicology (Elmsford, N.Y.) · 2025
    Article
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  11. Article
  12. Metabolomics of VToxicology and applied pharmacology · 2023
    Article
  13. Laboratory Determination of Gravimetric Correction Factors for Real-time Area Measurements of Electronic Cigarette Aerosols.Aerosol science and technology : the journal of the American Association for Aerosol Research · 2022
    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

6 authors at 1 institution in 1 country.

Zachery R JarrellDivision of Pulmonary, Allergy, Critical Care and Sleep Medicine, Emory University, Atlanta, Georgia 30322.
Matthew Ryan SmithDivision of Pulmonary, Allergy, Critical Care and Sleep Medicine, Emory University, Atlanta, Georgia 30322.
Xiaojia HeDivision of Pulmonary, Allergy, Critical Care and Sleep Medicine, Emory University, Atlanta, Georgia 30322.
Michael OrrDivision of Pulmonary, Allergy, Critical Care and Sleep Medicine, Emory University, Atlanta, Georgia 30322.
Dean P JonesDivision of Pulmonary, Allergy, Critical Care and Sleep Medicine, Emory University, Atlanta, Georgia 30322.
Young-Mi GoDivision of Pulmonary, Allergy, Critical Care and Sleep Medicine, Emory University, Atlanta, Georgia 30322.ORCID 0000-0003-3353-0844
Emory University · US

Funding

Pilot Project ProgramP30ES019776 · NIEHS · EMORY UNIVERSITY · PI William Michael Caudle · 2013 to 2026
$22.6M
Graduate and Postdoctoral Training in ToxicologyT32ES012870 · NIEHS · EMORY UNIVERSITY · PI Carmen Joseph Marsit · 2004 to 2026
$9.1M
Cytoplasmic-nuclear redox signaling: Disruption by dietary cadmium levelsR01ES023485 · NIEHS · EMORY UNIVERSITY · PI GO KANG, YOUNG-MI, JONES, DEAN PAUL · 2014 to 2018
$1.8M
Orbitrap Elite/H-ESI BundleS10OD018006 · OD · EMORY UNIVERSITY · PI JONES, DEAN PAUL · 2014 to 2014
$600k
Vanadium in lung mitochondria oxidative stressR21ES031824 · NIEHS · EMORY UNIVERSITY · PI GO KANG, YOUNG-MI, JONES, DEAN PAUL · 2020 to 2021
$429k
NIEHS NIH HHS P30 ES019776NIEHS NIH HHS R01 ES023485NIEHS NIH HHS R21 ES031824NIEHS NIH HHS T32 ES012870NIH HHS S10 OD018006
6 · The paper itself

Abstract

Electronic nicotine delivery system (ENDS) use has become a popular, generally regarded as safe, alternative to tobacco use. The e-liquids used for ENDS vapor generation commonly contain flavoring agents, such as maltol, which have been subjected to little investigation of their effects on lung health from ENDS usage. In the present study, we examined the impacts of firsthand (3.9 mM) and secondhand (3.9 µM) exposure levels to maltol-flavored ENDS vapors on lung metabolism. Human lung bronchial epithelial cells were exposed to ENDS vapors using a robotic system for controlled generation and delivery of exposures, and the effects on metabolism were evaluated using high-resolution metabolomics. The results show that maltol in e-liquids impacts lung airway epithelial cell metabolism at both firsthand and secondhand exposure levels. The effects of maltol were most notably seen in amino acid metabolism while oxidative stress was observed with exposure to all ENDS vapors including e-liquids alone and maltol-contained e-liquids. Many effects of firsthand exposure were also observed with secondhand exposure, suggesting need for systematic investigation of both firsthand and secondhand effects of flavored ENDS vapors on lung metabolism and risk of lung disease.

Indexed as

Electronic Nicotine Delivery SystemsAmino AcidsFlavoring AgentsHumansLungPyronesAmino AcidsFlavoring AgentsmaltolPyronese-cigaretteflavoranthigh-resolution metabolomicslung metabolism

Identifiers

PMID34009373
PMCPMC8285022
OpenAlexW3163700464

What OpenQuestion holds

Textmetadata
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.