Evidence map›Paper›PMID 28249034›Full record

Trial reportPloS one2017

The salivary microbiome is altered in the presence of a high salivary glucose concentration.

J Max Goodson, Mor-Li Hartman, Ping Shi, Hatice Hasturk, Tina Yaskell, Jorel Vargas, Xiaoqing Song, Maryann Cugini, Roula Barake, Osama Alsmadi and 5 more

Open access · goldAbstract readClinical TrialComparative Study
In one paragraph

Trial report in PloS one, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 59 papers.

0numbers the graph read from it
0cells of the map it votes in
59citing papers in PubMed
9.0field-weighted citation impact, top 1% 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

59 citing papers in PubMed, 113 citations in OpenAlex.

  1. Timing of food intake impacts daily rhythms of human salivary microbiota: a randomized, crossover study.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2018
    Trial
  2. Observational
  3. Article
  4. Article
  5. Article
  6. Article
  7. Microbial dysbiosis in oral cavity determines obesity status in adolescents.Cellular and molecular life sciences : CMLS · 2025
    Article
  8. Article
  9. Article
  10. Diet type and the oral microbiome.Frontiers in nutrition · 2025
    Review
  11. Review
  12. Article
  13. Article
  14. Article
  15. The Relationship Between the Growth ofReports of biochemistry & molecular biology · 2024
    Article
  16. Review
  17. Article
  18. Microbiota of Saliva: A Non-invasive Diagnostic Tool.Indian journal of microbiology · 2024
    Review
  19. Review
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

15 authors at 3 institutions in 1 country.

J Max GoodsonDepartment of Applied Oral Sciences, the Forsyth Research Institute, Cambridge, Massachusetts, United States of America.ORCID http://orcid.org/0000-0003-4225-9160
Mor-Li HartmanDepartment of Applied Oral Sciences, the Forsyth Research Institute, Cambridge, Massachusetts, United States of America.
Ping ShiDepartment of Applied Oral Sciences, the Forsyth Research Institute, Cambridge, Massachusetts, United States of America.
Hatice HasturkDepartment of Applied Oral Sciences, the Forsyth Research Institute, Cambridge, Massachusetts, United States of America.
Tina YaskellDepartment of Applied Oral Sciences, the Forsyth Research Institute, Cambridge, Massachusetts, United States of America.
Jorel VargasDepartment of Applied Oral Sciences, the Forsyth Research Institute, Cambridge, Massachusetts, United States of America.
Xiaoqing SongDepartment of Applied Oral Sciences, the Forsyth Research Institute, Cambridge, Massachusetts, United States of America.
Maryann CuginiDepartment of Applied Oral Sciences, the Forsyth Research Institute, Cambridge, Massachusetts, United States of America.
Roula BarakeThe Dasman Diabetes Institute, Kuwait City, Kuwait.
Osama AlsmadiThe Dasman Diabetes Institute, Kuwait City, Kuwait.
Sabiha Al-MutawaMinistry of Health, Kuwait City, Kuwait.
Jitendra ArigaMinistry of Health, Kuwait City, Kuwait.
Pramod SoparkarDepartment of Applied Oral Sciences, the Forsyth Research Institute, Cambridge, Massachusetts, United States of America.
Jawad BehbehaniKuwait University, Faculty of Dentistry, Kuwait City, Kuwait.
Kazem BehbehaniThe Dasman Diabetes Institute, Kuwait City, Kuwait.
Dasman Diabetes Institute · KWMinistry of Health · KWKuwait University · KW

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundType II diabetes (T2D) has been associated with changes in oral bacterial diversity and frequency. It is not known whether these changes are part of the etiology of T2D, or one of its effects.

methodsWe measured the glucose concentration, bacterial counts, and relative frequencies of 42 bacterial species in whole saliva samples from 8,173 Kuwaiti adolescents (mean age 10.00 ± 0.67 years) using DNA probe analysis. In addition, clinical data related to obesity, dental caries, and gingivitis were collected. Data were compared between adolescents with high salivary glucose (HSG; glucose concentration ≥ 1.0 mg/d, n = 175) and those with low salivary glucose (LSG, glucose concentration < 0.1 mg/dL n = 2,537).

resultsHSG was associated with dental caries and gingivitis in the study population. The overall salivary bacterial load in saliva decreased with increasing salivary glucose concentration. Under HSG conditions, the bacterial count for 35 (83%) of 42 species was significantly reduced, and relative bacterial frequencies in 27 species (64%) were altered, as compared with LSG conditions. These alterations were stronger predictors of high salivary glucose than measures of oral disease, obesity, sleep or fitness.

conclusionsHSG was associated with a reduction in overall bacterial load and alterations to many relative bacterial frequencies in saliva when compared with LSG in samples from adolescents. We propose that hyperglycemia due to obesity and/or T2D results in HSG and subsequent acidification of the oral environment, leading to a generalized perturbation in the oral microbiome. This suggests a basis for the observation that hyperglycemia is associated with an increased risk of dental erosion, dental caries, and gingivitis. We conclude that HSG in adolescents may be predicted from salivary microbial diversity or frequency, and that the changes in the oral microbial composition seen in adolescents with developing metabolic disease may the consequence of hyperglycemia.

Indexed as

BacteriaDiabetes Mellitus, Type 2MicrobiotaSalivaAdolescentChildFemaleGlucoseHumansMaleGlucose

Identifiers

PMID28249034
PMCPMC5331956
OpenAlexW2592958412

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.