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Impact of Gingivitis on Circulating Neutrophil Reactivity and Gingival Crevicular Fluid Inflammatory Proteins

Author

Listed:
  • Helen M. Roberts

    (School of Dentistry, Institute of Clinical Science, University of Birmingham and Birmingham Community Healthcare Foundation Trust, 5 Mill Pool Way, Edgbaston, Birmingham B5 7ET, UK)

  • Zehra Yonel

    (School of Dentistry, Institute of Clinical Science, University of Birmingham and Birmingham Community Healthcare Foundation Trust, 5 Mill Pool Way, Edgbaston, Birmingham B5 7ET, UK)

  • Alpdogan Kantarci

    (Forsyth Institute, 245 First Street, Cambridge, MA 02142, USA)

  • Melissa M. Grant

    (School of Dentistry, Institute of Clinical Science, University of Birmingham and Birmingham Community Healthcare Foundation Trust, 5 Mill Pool Way, Edgbaston, Birmingham B5 7ET, UK)

  • Iain L. C. Chapple

    (School of Dentistry, Institute of Clinical Science, University of Birmingham and Birmingham Community Healthcare Foundation Trust, 5 Mill Pool Way, Edgbaston, Birmingham B5 7ET, UK)

Abstract

Gingivitis is an extremely common oral inflammatory condition and can be induced in humans using an acute 21-day experimental gingivitis model. Neutrophils are known to be highly prevalent in the gingival crevice during gingival inflammation; however, the effect of gingivitis and the associated biofilm on peripheral blood neutrophils (PBN) is not well characterised. Thus, the aim of this study was to examine the impact of inflammation induced by experimental gingivitis and its resolution upon the function of PBN. Fifteen systemically healthy volunteers undertook a split-mouth 21-day experimental gingivitis study followed by a resolution phase of 14 days. PBN function, including reactive oxygen species (ROS) production, neutrophil extracellular trap (NET) release, directional chemotactic accuracy and expression of host mediators in gingival crevicular fluid (GCF), were measured at baseline (day 0), on day 21 and on day 35. NET formation and ROS production were significantly elevated at day 21. Chemotactic speed was also elevated in response to bacterial peptide fMLP at day 21. At day 35, ROS production in response to an Fcgamma stimulant, opsonised Staphylococcus aureus , remained elevated. The data presented suggest a lasting biological impact of the experimental gingivitis on PBN function even after clinical symptoms have abated.

Suggested Citation

  • Helen M. Roberts & Zehra Yonel & Alpdogan Kantarci & Melissa M. Grant & Iain L. C. Chapple, 2022. "Impact of Gingivitis on Circulating Neutrophil Reactivity and Gingival Crevicular Fluid Inflammatory Proteins," IJERPH, MDPI, vol. 19(10), pages 1-13, May.
    • Handle: RePEc:gam:jijerp:v:19:y:2022:i:10:p:6339-:d:822049
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