Nicotine effects on PGE2 and IL-1β release by LPS-treated human monocytes

Jeffrey B Payne, G. K. Johnson, Richard A Reinhardt, J. K. Dyer, C. A. Maze, David G Dunning

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96 Scopus citations

Abstract

Cigarette smoking is a major risk factor in the development and further progression of periodontitis. However, little is known regarding the pathogenesis of smoking-related periodontal diseases. The purpose of this study was to examine the effects of nicotine, alone and in combination with Iipopolysaccharide (LPS), on monocyte secretion of bone-resorbing factors, PGE2 and IL-1β. Peripheral blood monocytes (PBM) were isolated by counterflow centrifugal elutriation from 15 healthy, non-smoking donors. PBM were incubated for 24 h in RPMI 1640 containing nicotine (0, 50 ng/ml, 1 μg/ml, 10 μg/ml and 100 μg/ml) with or without 10 μg/ml Porphyromonas gingivalis LPS or Escherichia coli LPS. Culture supernatants were assayed for PGE2 and IL-1β by ELISA. None of the nicotine preparations resulted in significant PBM secretion of PGE2 and IL-1β above that of unstimulated cultures. However, PGE2 release was potentiated 1.7-fold by the combination of P. gingivalis LPS and 10 μg/ml nicotine relative to P. gingivalis LPS alone (p<0.05, one-way ANOVA). Prostaglandin E2 release also was potentiated 3.5-fold by P. gingivalis LPS and 100 μg/ml nicotine relative to P. gingivalis LPS alone (p<0.00001, one-way ANOVA) and 3.1-fold by E. coli LPS and 100 μg/ml nicotine relative to E. coli LPS alone (p<0.00001, one-way ANOVA). IL-1β secretion was lower for either LPS plus 100 μg/ml nicotine relative to LPS alone, although not significantly. These data demonstrate upregulation of LPS-mediated monocyte secretion of PGE2 by nicotine and suggest a potential role for nicotine in periodontal disease pathogenesis.

Original languageEnglish (US)
Pages (from-to)99-104
Number of pages6
JournalJournal of Periodontal Research
Volume31
Issue number2
DOIs
StatePublished - Feb 1996

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Keywords

  • (IL-1β)
  • Interleukin-1β
  • Lipopolysaccharide (LPS)
  • Monocytes
  • Nicotine
  • Prostaglandin E
  • Smoking, smokeless tobacco

ASJC Scopus subject areas

  • Periodontics

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