Evidence map›Paper›PMID 31725203›Full record

ArticleMicrobiologyOpen2020

Combining culture and culture-independent methods reveals new microbial composition of halitosis patients' tongue biofilm.

Sara Bernardi, Lamprini Karygianni, Andreas Filippi, Annette Carola Anderson, Andrea Zürcher, Elmar Hellwig, Kirstin Vach, Guido Macchiarelli, Ali Al-Ahmad

Open access · goldAbstract read
In one paragraph

Article in MicrobiologyOpen, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
5.3field-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

27 citing papers in PubMed, 42 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Unveiling the complexity of early childhood caries:Journal of oral microbiology · 2024
    Review
  5. Article
  6. Article
  7. Article
  8. Site-tropism of streptococci in the oral microbiome.Molecular oral microbiology · 2022
    Article
  9. Article
  10. Article
  11. The effects of cigarette smoking on the salivary and tongue microbiome.Clinical and experimental dental research · 2022
    Article
  12. Review
  13. Microbiome of Unilateral Chronic Rhinosinusitis: A Controlled Paired Analysis.International journal of environmental research and public health · 2021
    Article
  14. Article
  15. Article
  16. Structural Equation Modeling of Tongue Function and Tongue Hygiene in Acute Stroke Patients.International journal of environmental research and public health · 2021
    Article
  17. Article
  18. Article
  19. Review
  20. Dietary Factors Affecting the Prevalence and Impact of Periodontal Disease.Clinical, cosmetic and investigational dentistry · 2021
    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

9 authors at 4 institutions in 3 countries.

Sara BernardiDepartment of Life, Health and Environmental Sciences, University of L'Aquila, L'Aquila, Italy.ORCID 0000-0001-6130-8533
Lamprini KarygianniClinic for Preventive Dentistry, Periodontology and Cariology, University of Zurich, Zurich, Switzerland.ORCID 0000-0002-7893-0393
Andreas FilippiDepartment of Oral Surgery, Center of Dental Traumatology, University Center for Dental Medicine Basel UZB, Basel, Switzerland.
Annette Carola AndersonDepartment of Operative Dentistry and Periodontology, Center for Dental Medicine, Faculty of Medicine, University of Freiburg, Freiburg, Germany.ORCID 0000-0002-4489-1939
Andrea ZürcherDepartment of Oral Surgery, Center of Dental Traumatology, University Center for Dental Medicine Basel UZB, Basel, Switzerland.
Elmar HellwigDepartment of Operative Dentistry and Periodontology, Center for Dental Medicine, Faculty of Medicine, University of Freiburg, Freiburg, Germany.
Kirstin VachInstitute for Medical Biometry and Statistics, University of Freiburg, Freiburg, Germany.ORCID 0000-0001-9278-2203
Guido MacchiarelliDepartment of Life, Health and Environmental Sciences, University of L'Aquila, L'Aquila, Italy.ORCID 0000-0002-9182-0586
Ali Al-AhmadDepartment of Operative Dentistry and Periodontology, Center for Dental Medicine, Faculty of Medicine, University of Freiburg, Freiburg, Germany.
University of Freiburg · DEUniversity of Basel · CHUniversity of L'Aquila · ITUniversity of Zurich · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundOral malodor is a very discomforting condition deriving from the presence of volatile sulfur compounds in the expired air. In halitosis of intraoral etiology, the volatile sulfur compounds are metabolic products of the oral microorganisms within the biofilm coating the tongue dorsum as well as other tissues in the oral cavity. The aim of this study was to characterize and compare the microbial composition of tongue biofilm in volunteers suffering from halitosis and healthy volunteers by means of both the culture method and culture-independent cloning technique.

resultsA high bacterial variety (more than 80 different species) was detected using the combination of both methods. A distinct bacterial composition was revealed in the halitosis-associated biofilms compared with the health-associated biofilms. Actinomyces graevenitzii was shown to be significantly associated with the halitosis condition. The culture method identified 47 species, included Veillonella rogosae, never isolated from the tongue biofilm of halitosis patients so far. In the healthy condition, the culture-dependent method showed that the most frequent species were Streptococcus parasanguinis among the aerobes and Veillonella spp. among the anaerobes. The culture-independent cloning method detected more than 50 species. Streptococci, in particular S. mitis/oralis, S. pseudopneumoniae, and S. infantis as well as Prevotella spp., were found most frequently in halitosis patients. Streptococcus salivarius and Rothia mucilaginosa were found more frequently in the healthy condition.

conclusionsThe combination of the culture-dependent and culture-independent cloning techniques allowed for a widespread analysis of the tongue biofilm in halitosis patients. The results can support further pharmacological research for new antimicrobial agents and halitosis therapy strategies.

Indexed as

MicrobiotaAdultAgedBacterial Typing TechniquesBiodiversityBiofilmsFemaleHalitosisHumansMaleMicrobiological TechniquesMiddle AgedMouthPolymerase Chain ReactionRNA, Ribosomal, 16STongueRNA, Ribosomal, 16Sculture-independent cloning techniquehalitosismicrobial culturetongue biofilm

Identifiers

PMID31725203
PMCPMC7002105
OpenAlexW2988631592

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.