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Synergistic effects of lipopolysaccharides from periodontopathic bacteria on pro‐inflammatory cytokine production in an ex vivo whole blood model
Author(s) -
Bodet C.,
Grenier D.
Publication year - 2010
Publication title -
molecular oral microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 77
eISSN - 2041-1014
pISSN - 2041-1006
DOI - 10.1111/j.2041-1014.2010.00566.x
Subject(s) - treponema denticola , tannerella forsythia , porphyromonas gingivalis , forsythia , periodontitis , tumor necrosis factor alpha , ex vivo , lipopolysaccharide , population , immunology , cytokine , microbiology and biotechnology , chronic periodontitis , interleukin , medicine , biology , in vivo , pathology , honeysuckle , alternative medicine , environmental health , traditional chinese medicine
Summary Porphyromonas gingivalis , Treponema denticola , and Tannerella forsythia have been strongly associated with chronic periodontitis. This disease is characterized by an accumulation of inflammatory cells in periodontal tissue and subgingival sites. The secretion of high levels of inflammatory cytokines by those cells is believed to contribute to periodontal tissue destruction. The aim of this study was to investigate the inflammatory response of whole blood from periodontitis patients following challenges with whole cells of P. gingivalis , T. denticola , and T. forsythia or their lipopolysaccharides (LPS), individually and in combination. Whole blood collected from seven periodontitis patients was stimulated with whole cells or LPS and the production of interleukin (IL)‐1β, IL‐6, IL‐8, and tumor necrosis factor alpha (TNF‐α) were quantified by enzyme‐linked immunosorbent assays. The mono and mixed challenges with whole bacterial cells or LPS induced the secretion of high amounts of IL‐1β, IL‐6, IL‐8, and TNF‐α by the mixed leukocyte population from periodontitis patients. In addition, P. gingivalis LPS, T. denticola LPS, and T. forsythia LPS acted in synergy to induce high levels of IL‐1β and TNF‐α. This study suggests that P. gingivalis , T. denticola , and T. forsythia may contribute to the immunodestructive host response characteristic of periodontitis through synergistic effects of their LPS on the inflammatory response induced by a mixed population of leukocytes.