Evidence map›Paper›PMID 34018192›Full record

ArticleJournal of periodontal research2021

Heat-not-burn tobacco (IQOS), oral fibroblasts and keratinocytes: cytotoxicity, morphological analysis, apoptosis and cellular cycle. An in vitro study.

Stefano Pagano, Paolo Negri, Maddalena Coniglio, Stefano Bruscoli, Alessandro Di Michele, Maria Cristina Marchetti, Chiara Valenti, Angela Gambelunghe, Luca Fanasca, Monia Billi and 2 more

Open access · hybridAbstract read
In one paragraph

Article in Journal of periodontal research, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
2.9field-weighted citation impact, top 8% 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

19 citing papers in PubMed, 41 citations in OpenAlex.

  1. Advancing infection therapy: the role of novel menthol-based antimicrobials.Journal of enzyme inhibition and medicinal chemistry · 2026
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  19. Association between Smoking during Pregnancy and Short Root Anomaly in Offspring.International journal of environmental research and public health · 2021
    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

12 authors at 2 institutions in 1 country.

Stefano PaganoDepartment of Medicine and Surgery, Odontostomatological University Centre: Chair Prof. Stefano Cianetti, University of Perugia, Perugia, Italy.
Paolo NegriDepartment of Medicine and Surgery, Odontostomatological University Centre: Chair Prof. Stefano Cianetti, University of Perugia, Perugia, Italy.
Maddalena ConiglioDepartment of Medicine and Surgery, Odontostomatological University Centre: Chair Prof. Stefano Cianetti, University of Perugia, Perugia, Italy.
Stefano BruscoliDepartment of Medicine and Surgery, Section of Pharmacology, University of Perugia, Perugia, Italy.
Alessandro Di MicheleDepartment of Physics and Geology, University of Perugia, Perugia, Italy.
Maria Cristina MarchettiDepartment of Medicine and Surgery, Section of Pharmacology, University of Perugia, Perugia, Italy.
Chiara ValentiDepartment of Medicine and Surgery, Odontostomatological University Centre: Chair Prof. Stefano Cianetti, University of Perugia, Perugia, Italy.
Angela GambelungheDepartment of Medicine and Surgery, Section of Occupational Medicine, Respiratory Diseases and Toxicology, University of Perugia, Perugia, Italy.
Luca FanascaDepartment of Molecular Medicine Biotechnology, University of Naples Federico II, Naples, Italy.
Monia BilliDepartment of Medicine and Surgery, Section of General Pathology, University of Perugia, Perugia, Italy.
Stefano CianettiDepartment of Medicine and Surgery, Odontostomatological University Centre: Chair Prof. Stefano Cianetti, University of Perugia, Perugia, Italy.
Lorella MarinucciDepartment of Medicine and Surgery, Section of Biosciences and Medical Embryology, University of Perugia, Perugia, Italy.ORCID https://orcid.org/0000-0003-0997-3426
University of Perugia · ITUniversity of Naples Federico II · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesThe aim of this work is to investigate the biological effects of IQOS smoking on human gingival fibroblasts and human keratinocytes analysing cell viability, morphology, migration, apoptosis and cell cycle.

backgroundElectronic cigarettes and tobacco heating systems have been marketed to reduce smoking damages caused by combustion.

methodsHuman gingival fibroblasts and human keratinocytes viability was determined by a colorimetric assay measuring mitochondrial dehydrogenase activity (MTT assay); after an in vitro exposure of 24 h, cell morphology was analysed with scanning electron microscope and cell migration was tested by Scratch assay, a method to mimic the migration of the cells during wound healing in vivo. Apoptosis and cell cycle were analysed with flow cytometry, and the expression of related genes (p53, Bcl2, p16 and p21) was indagated using real-time polymerase chain reaction.

resultsIQOS extracts increased both cell viability (23%-41% with fibroblasts and 30%-79% with keratinocytes) and migration. No morphological alterations were observed. IQOS extracts did not induced an increase in cell death, but rose the number of S- and G2/M-phase cells. IQOS extracts also significantly increased p53 expression by fibroblasts (undiluted and 6.25% dilution, 2- and 3.6-fold higher, respectively) and reduced both Bcl2 (about two- and fivefold, respectively) and p21 expressions (about twofold with both extracts), while on keratinocytes both undiluted and 6.25% dilution extracts increased Bcl2 expression (about four- and threefold higher, respectively) and reduced p53 expression (about two- and fivefold, respectively).

conclusionIQOS smoke seemed to induce proliferation as highlighted by a viability assay, and migration and cell cycle analysis. The increased cell proliferation induced by IQOS devices must be carefully investigated for its possible clinical effects on oral cell populations.

Indexed as

Electronic Nicotine Delivery SystemsTobacco ProductsApoptosisCell CycleFibroblastsHot TemperatureHumansKeratinocytesapoptosiscytotoxicityfibroblastkeratinocytesmoking devices

Identifiers

PMID34018192
PMCPMC8518503
OpenAlexW3162499153

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.