Influence of Bacterial Profiles in Cytokine and Clinical Features of Endodontic Disease.

Abstract

INTRODUCTION:

We verified the association between selected bacterial profiles and levels of cytokines, chemokines, and the expression of signs and symptoms of primary endodontic infection with apical periodontitis.

METHODS:

Samples were collected from 21 root canals, and macrophages were stimulated for 24 hours. Tumor necrosis factor alpha (TNF-α), interleukin (IL)-6, IL-10, IL-12p70, interferon gamma, and chemokine (C-C motif) ligand 2 (CCL2) were measured using cytometric bead array. We investigated the overlapping networks between cytokines and chemokines with regression analysis. Checkerboard DNA-DNA hybridization was used to assess 40 target bacteria species. Using factor analysis, bacterial species aggregated in 2 factors. The association of bacteria species-based factors on cytokine and chemokine levels and clinical features was estimated with regression analysis.

RESULTS:

A negative relationship between IL-10 (anti-inflammatory cytokine) and CCL2, TNF-α, and IFN-γ (proinflammatory cytokines) (all P < .05) was observed. CCL2 was positively correlated with TNF-α (P < .01). Thirty-eight bacteria species were detected in primary endodontic infection with apical periodontitis. The first bacteria species-based factor was associated with the size of the radiolucent area (coefficient = 15.42) and tenderness to percussion/pain on palpation (coefficient = 20.79). The second factor was associated with CCL2 levels (coefficient = 1.28).

CONCLUSIONS:

Different bacterial profiles can be differentially related to the expression of inflammatory proteins and the experience of clinical features.

• Authors: Frederico C Martinho, Fabio R M Leite, Rodrigo Arruda-Vasconcelos, Lidiane M Louzada, Richard P Darveau, Brenda P F A Gomes
• Journal: Journal of endodontics (J Endod) Vol. 47 Issue 8 Pg. 1265-1271 (Aug 2021) ISSN: 1878-3554 [Electronic] United States
• PMID: 34015415 (Publication Type: Journal Article)
• Copyright: Copyright © 2021 American Association of Endodontists. Published by Elsevier Inc. All rights reserved.

Chemical References

• Chemokine CCL2
• Cytokines
• Interleukin-6
• Tumor Necrosis Factor-alpha

Topics

• Bacteria
• Chemokine CCL2
• Cytokines
• Humans
• Interleukin-6
• Periapical Periodontitis
• Tumor Necrosis Factor-alpha