Cited by 1,150Oral microbiology and periodontitis researchPeriodontal Regeneration and TreatmentsDental Research and COVID-19

Immunomicrobial pathogenesis of periodontitis: keystones, pathobionts, and host response

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Hajishengallis, George·2014·Trends in Immunology

Abstract

Recent studies have uncovered novel mechanisms underlying the breakdown of periodontal host-microbe homeostasis, which can precipitate dysbiosis and periodontitis in susceptible hosts. Dysbiotic microbial communities of keystone pathogens and pathobionts are thought to exhibit synergistic virulence whereby not only can they endure the host response but can also thrive by exploiting tissue-destructive inflammation, which fuels a self-feeding cycle of escalating dysbiosis and inflammatory bone loss, potentially leading to tooth loss and systemic complications. Here, I discuss new paradigms in our understanding of periodontitis, which may shed light into other polymicrobial inflammatory disorders. In addition, I highlight gaps in knowledge required for an integrated picture of the interplay between microbes and innate and adaptive immune elements that initiate and propagate chronic periodontal inflammation.

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  • Crosstalk between complement and pattern recognition receptors in response to dysbiosis further reinforces the immunomicrobial nature of periodontitis, in which these factors permit dysbiosis via inflammatory destruction of periodontal tissues and the provision of proteinaceous metabolic by-products that further drive dysbiosis and tissue destruction.

    “Crosstalk between complement and pattern recognition receptors in response to dysbiosis further reinforces the immunomicrobial nature of periodontitis, in which these factors permit dysbiosis via inflammatory destruction of periodontal tissues and the provision of proteinaceous metabolic by‐products that further drive dysbiosis and tissue destruction.241”
  • Biofilm communities maintained at the dentogingival border stimulate immunologic responses at the gingiva, further driving dysbiosis and reinforcing inflammation.

    “Biofilm communities maintained at the dentogingival border stimulate immunologic responses at the gingiva, further driving dysbiosis and reinforcing inflammation.241”

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Authors
Hajishengallis, G.
Affiliations
University of Pennsylvania (US)
Corresponding author
Hajishengallis, George
Venue
Trends in Immunology
Publisher
Elsevier BV
Published
2014-01
Volume
35
Issue
1
Pages
3-11
ISSN
1471-4906 (ISSN-L)
OpenAlex
W2066151306
Cited by
1,150
References
83
Citations by year
2026: 100 · 2025: 101 · 2024: 127 · 2023: 124 · 2022: 100 · 2021: 114 · 2020: 88 · 2019: 91 · 2018: 74 · 2017: 73 · 2016: 61 · 2015: 59 · 2014: 35 · 2013: 1
FWCI
7.82
Type
journal article
Language
en
Open access
Locations
  • Trends in Immunology (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health
  • National Institute of Dental and Craniofacial Research (DE-015254, DE017138, R01DE015254, DE021580, DE021685, RC4DE021580, R01DE021685, R01DE017138)
Topics
  • Health Sciences › Dentistry › Periodontics › Oral microbiology and periodontitis research
  • Health Sciences › Medicine › Urology › Periodontal Regeneration and Treatments
  • Health Sciences › Dentistry › General Dentistry › Dental Research and COVID-19
Keywords
periodontitis, pathobionts, periodontal dysbiosis, host-microbe homeostasis, periodontal inflammation, alveolar bone loss, tooth loss, systemic complications, innate immunity, adaptive immunity
MeSH terms
Cell Communication, Disease Susceptibility, Humans, Inflammation, Periodontitis, Alveolar Bone Loss, Host-Pathogen Interactions

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