Evidence map›Paper›PMID 25217021›Full record

ArticleApplied and environmental microbiology2014

Effects of Nicotine on Streptococcus gordonii Growth, Biofilm Formation, and Cell Aggregation.

R Huang, M Li, M Ye, K Yang, X Xu, R L Gregory

Open access · bronzeAbstract read
In one paragraph

Article in Applied and environmental microbiology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed
4.4field-weighted citation impact, top 5% 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

34 citing papers in PubMed, 69 citations in OpenAlex.

  1. Article
  2. Review
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  6. Article
  7. Observational
  8. Article
  9. Article
  10. Review
  11. Microbiology of the American Smokeless Tobacco.Applied microbiology and biotechnology · 2021
    Review
  12. Review
  13. Article
  14. Article
  15. Review
  16. Article
  17. Article
  18. Article
  19. Article
  20. Smoking and periodontal microorganisms.The Japanese dental science review · 2019
    Review
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 2 institutions in 2 countries.

R HuangDepartment of Oral Biology and Tobacco Cessation and Biobehavioral Group, School of Dentistry, Indiana University, Indianapolis, Indiana, USA State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.
M LiDepartment of Oral Biology and Tobacco Cessation and Biobehavioral Group, School of Dentistry, Indiana University, Indianapolis, Indiana, USA State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.
M YeDepartment of Microbiology and Immunology, School of Medicine, Indiana University, Indianapolis, Indiana, USA.
K YangDepartment of Electrical and Computer Engineering, Indiana University-Purdue University, Indianapolis, Indiana, USA.
X XuState Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.
R L GregoryDepartment of Oral Biology and Tobacco Cessation and Biobehavioral Group, School of Dentistry, Indiana University, Indianapolis, Indiana, USA Department of Pathology and Laboratory Medicine, School of Medicine, Indiana University, Indianapolis, Indiana, USA rgregory@iu.edu.
Indiana University – Purdue University Indianapolis · USSichuan University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Streptococcus gordonii is a commensal species of human oral flora. It initiates dental biofilm formation and provides binding sites for later colonizers to attach to and generate mature biofilm. Smoking is the second highest risk factor for periodontal disease, and cigarette smoke extract has been reported to facilitate Porphyromonas gingivalis-S. gordonii dual-species biofilm formation. Our hypothesis is that nicotine, one of the most important and active components of tobacco, stimulates S. gordonii multiplication and aggregation. In the present study, S. gordonii planktonic cell growth (kinetic absorbance and CFU), biofilm formation (crystal violet stain and confocal laser scanning microscopy [CLSM]), aggregation with/without sucrose, and 11 genes that encode binding proteins or regulators of gene expression were investigated. Results demonstrated planktonic cell growth was stimulated by 1 to 4 mg/ml nicotine treatment. Biofilm formation was increased at 0.5 to 4 mg/ml nicotine. CLSM indicated bacterial cell mass was increased by 2 and 4 mg/ml nicotine, but biofilm extracellular polysaccharide was not significantly affected by nicotine. Cell aggregation was upregulated by 4, 8, and 16 mg/ml nicotine with sucrose and by 16 mg/ml nicotine without sucrose. Quantitative reverse transcriptase PCR indicated S. gordonii abpA, scaA, ccpA, and srtA were upregulated in planktonic cells by 2 mg/ml nicotine. In conclusion, nicotine stimulates S. gordonii planktonic cell growth, biofilm formation, aggregation, and gene expression of binding proteins. Those effects may promote later pathogen attachment to tooth surfaces, the accumulation of tooth calculus, and the development of periodontal disease in cigarette smokers.

Indexed as

Adhesins, BacterialBacterial AdhesionBiofilmsColony Count, MicrobialGene ExpressionGene Expression ProfilingMicroscopy, ConfocalNicotianaNicotineReal-Time Polymerase Chain ReactionReverse Transcriptase Polymerase Chain ReactionSpectrophotometryStaining and LabelingStreptococcus gordoniiAdhesins, BacterialNicotine

Identifiers

PMID25217021
PMCPMC4249166
OpenAlexW2073406375

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.