Evidence map›Paper›PMID 28432442›Full record

ArticleApplied microbiology and biotechnology2017

Smokeless tobacco products harbor diverse bacterial microbiota that differ across products and brands.

Eoghan M Smyth, Prachi Kulkarni, Emma Claye, Stephen Stanfill, Robert Tyx, Cynthia Maddox, Emmanuel F Mongodin, Amy R Sapkota

Abstract read
In one paragraph

Article in Applied microbiology and biotechnology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed
–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.

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

30 citing papers in PubMed.

  1. Article
  2. Viable, Multi-Drug-Resistant Bacteria Recovered from E-Liquids Used with Commercial Electronic Cigarettes.International journal of environmental research and public health · 2025
    Article
  3. Review
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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

8 authors.

Eoghan M SmythInstitute for Genome Sciences, University of Maryland School of Medicine, 801 West Baltimore St., Baltimore, MD, 21201, USA.
Prachi KulkarniMaryland Institute for Applied Environmental Health, University of Maryland School of Public Health, 4200 Valley Drive, Bldg no. 255, Room 2234P, College Park, MD, 20742, USA.
Emma ClayeMaryland Institute for Applied Environmental Health, University of Maryland School of Public Health, 4200 Valley Drive, Bldg no. 255, Room 2234P, College Park, MD, 20742, USA.
Stephen StanfillDivision of Laboratory Sciences, Centers for Disease Control and Prevention, 1600 Clifton Road, Atlanta, GA, 30329, USA.
Robert TyxDivision of Laboratory Sciences, Centers for Disease Control and Prevention, 1600 Clifton Road, Atlanta, GA, 30329, USA.
Cynthia MaddoxInstitute for Genome Sciences, University of Maryland School of Medicine, 801 West Baltimore St., Baltimore, MD, 21201, USA.
Emmanuel F MongodinInstitute for Genome Sciences, University of Maryland School of Medicine, 801 West Baltimore St., Baltimore, MD, 21201, USA.
Amy R SapkotaMaryland Institute for Applied Environmental Health, University of Maryland School of Public Health, 4200 Valley Drive, Bldg no. 255, Room 2234P, College Park, MD, 20742, USA. ars@umd.edu.

Funding

Rapid Response Characterization of New and Manipulated Tobacco ProductsP50CA180523 · NCI · UNIV OF MARYLAND, COLLEGE PARK · PI CLARK, PAMELA I · 2013 to 2017
$19.0M
NCI NIH HHS P50 CA180523
6 · The paper itself

Abstract

Smokeless tobacco products contain numerous chemical compounds, including known human carcinogens. Other smokeless tobacco constituents, including bacteria, may also contribute to adverse health effects among smokeless tobacco users. However, there is a lack of data regarding the microbial constituents of smokeless tobacco. Our goal was to characterize the bacterial microbiota of different smokeless tobacco products and evaluate differences across product types and brands. DNA was extracted from 15 brands of smokeless tobacco products (including dry snuff, moist snuff, snus, and Swedish snus) and 6 handmade products (e.g., toombak) using an enzymatic and mechanical lysis approach. Bacterial community profiling was performed using PCR amplification of the V1-V2 hypervariable region of the 16S rRNA gene, followed by 454 pyrosequencing of the resulting amplicons and sequence analysis using the QIIME package. Total viable counts were also determined to estimate the number of viable bacteria present in each product. Average total viable counts ranged from 0 to 9.35 × 10

Indexed as

BacillotaBacteriaCarcinogensComputer SimulationHigh-Throughput Nucleotide SequencingHumansMarketingMicrobial ViabilityMicrobiotaPolymerase Chain ReactionProteobacteriaRNA, Ribosomal, 16STobacco, SmokelessCarcinogensRNA, Ribosomal, 16S16S rRNABacteriaMicrobiotaSmokeless tobaccoSnuffSnus

Identifiers

PMID28432442
PMCPMC5520664

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.