Cited by 66Oral microbiology and periodontitis researchGut microbiota and healthDental Health and Care Utilization

Nitrate and the origin of saliva influence composition and short chain fatty acid production of oral microcosms

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Koopman, Jessica E., Buijs, Mark J., Brandt, Bernd W., Keijser, Bart J. F., Crielaard, Wim, Zaura, Egija·2016·Microbial Ecology

Abstract

Nitrate is emerging as a possible health benefactor. Especially the microbial conversion of nitrate to nitrite in the oral cavity and the subsequent conversion to nitric oxide in the stomach are of interest in this regard. Yet, how nitrate influences the composition and biochemistry of the oral ecosystem is not fully understood. To investigate the effect of nitrate on oral ecology, we performed a 4-week experiment using the multiplaque artificial mouth (MAM) biofilm model. This model was inoculated with stimulated saliva of two healthy donors. Half of the microcosms (n = 4) received a constant supply of nitrate, while the other half functioned as control (n = 4). Additionally, all microcosms received a nitrate and sucrose pulse, each week, on separate days to measure nitrate reduction and acid formation. The bacterial composition of the microcosms was determined by 16S rDNA sequencing. The origin of the saliva (i.e., donor) showed to be the strongest determinant for the development of the microcosms. The supplementation of nitrate was related to a relatively high abundance of Neisseria in the microcosms of both donors, while Veillonella was highly abundant in the nitrate-supplemented microcosms of only one of the donors. The lactate concentration after sucrose addition was similarly high in all microcosms, irrespective of treatment or donor, while the concentration of butyrate was lower after nitrate addition in the nitrate-receiving microcosms. In conclusion, nitrate influences the composition and biochemistry of oral microcosms, although the result is strongly dependent on the inoculum.

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Authors
Koopman, J. E., Buijs, M. J., Brandt, B. W., Keijser, B. J. F., Crielaard, W., & Zaura, E.
Affiliations
  • Academic Center for Dentistry Amsterdam (NL)
  • Netherlands Organisation for Applied Scientific Research (NL)
Corresponding author
Zaura, Egija
Venue
Microbial Ecology
Published
2016-05-07
Volume
72
Issue
2
Pages
479-492
ISSN
  • 0095-3628 (ISSN-L)
  • 1432-184X
OpenAlex
W2347145403
Cited by
66
References
67
Citations by year
2026: 1 · 2025: 9 · 2024: 4 · 2023: 4 · 2022: 9 · 2021: 6 · 2020: 18 · 2019: 8 · 2018: 2 · 2017: 4 · 2016: 1
FWCI
7.46
Type
journal article
Language
en
Open access
Locations
  • Microbial Ecology (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • VU Research Portal (publishedVersion, other-oa)
  • UvA-DARE (University of Amsterdam) (submittedVersion, cc-by)
  • TNO Repository (submittedVersion)
  • Data Archiving and Networked Services (DANS) (submittedVersion, other-oa)
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
nitrate, oral microbiota, stimulated saliva, short-chain fatty acids, butyrate, nitrate reduction, nitrite, nitric oxide, Neisseria, Veillonella, dental plaque, sucrose challenge, lactate, donor influence, oral ecology
MeSH terms
Adult, Bacteria, Butyrates, Fatty Acids, Volatile, Female, Genes, Bacterial, Humans, Male, Neisseria, Nitrates, Nitrites, RNA, Ribosomal, 16S, Saliva, Sucrose, Veillonella, Sequence Analysis, DNA, Biomass, Genomics, Young Adult

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