Cited by 488Oral microbiology and periodontitis researchGut microbiota and healthDental Health and Care Utilization

Oral Microbiome Metabolism: From “Who Are They?” to “What Are They Doing?”

Takahashi, N.·2015·Journal of Dental Research

Abstract

Recent advances in molecular biology have facilitated analyses of the oral microbiome (“Who are they?”); however, its functions (e.g., metabolic activities) are poorly understood (“What are they doing?”). This review aims to summarize our current understanding of the metabolism of the oral microbiome. Saccharolytic bacteria—including Streptococcus, Actinomyces, and Lactobacillus species—degrade carbohydrates into organic acids via the Embden-Meyerhof-Parnas pathway and several of its branch pathways, resulting in dental caries, while alkalization and acid neutralization via the arginine deiminase system, urease, and so on, counteract acidification. Proteolytic/amino acid–degrading bacteria, including Prevotella and Porphyromonas species, break down proteins and peptides into amino acids and degrade them further via specific pathways to produce short-chain fatty acids, ammonia, sulfur compounds, and indole/skatole, which act as virulent and modifying factors in periodontitis and oral malodor. Furthermore, it is suggested that ethanol-derived acetaldehyde can cause oral cancer, while nitrate-derived nitrite can aid caries prevention and systemic health. Microbial metabolic activity is influenced by the oral environment; however, it can also modify the oral environment, enhance the pathogenicity of bacteria, and induce microbial selection to create more pathogenic microbiome. Taking a metabolomic approach to analyzing the oral microbiome is crucial to improving our understanding of the functions of the oral microbiome.

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Crossref · 10.1177/0022034515606045

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Authors
Takahashi, N.
Affiliations
Tohoku University (JP)
Corresponding author
Takahashi, N.
Venue
Journal of Dental Research
Published
2015-09-16
Volume
94
Issue
12
Pages
1628-1637
ISSN
  • 0022-0345 (ISSN-L)
  • 1544-0591
OpenAlex
W2177799539
Cited by
488
References
65
Citations by year
2026: 45 · 2025: 65 · 2024: 49 · 2023: 49 · 2022: 55 · 2021: 50 · 2020: 43 · 2019: 48 · 2018: 27 · 2017: 38 · 2016: 16 · 2015: 2
FWCI
4.77
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Dental Research (publishedVersion)
  • PubMed (publishedVersion)
Funders
Japan Society for the Promotion of Science (26293439)
Topics
  • Health Sciences › Dentistry › Periodontics › Oral microbiology and periodontitis research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
  • Health Sciences › Dentistry › Periodontics › Dental Health and Care Utilization
Keywords
oral microbiota, microbial metabolism, dental caries, periodontitis, halitosis, arginine deiminase system, urease, short-chain fatty acids, acetaldehyde, nitrite, Streptococcus, Lactobacillus, Porphyromonas, Prevotella, glycolysis, microbial metabolomics
MeSH terms
Bacteria, Dental Caries, Dental Plaque, Humans, Mouth, Oral Health, Periodontal Diseases, Microbiota

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