*Contributed equally to this work.
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The interplay of lipopolysaccharide-binding protein and cytokines in periodontal health and disease
Article first published online: 26 JUN 2009
DOI: 10.1111/j.1600-051X.2009.01436.x
© 2009 John Wiley & Sons A/S
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How to Cite
Ren, L., Jiang, Z. Q., Fu, Y., Leung, W. K. and Jin, L. (2009), The interplay of lipopolysaccharide-binding protein and cytokines in periodontal health and disease. Journal of Clinical Periodontology, 36: 619–626. doi: 10.1111/j.1600-051X.2009.01436.x
Publication History
- Issue published online: 10 JUL 2009
- Article first published online: 26 JUN 2009
- Accepted for publication 2 May 2009
- Abstract
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Keywords:
- human gingival fibroblasts;
- interleukin-10;
- interleukin-1β;
- lipopolysaccharide;
- lipopolysaccharide-binding protein;
- periodontal pockets
Abstract
Aim: Periodontal pathogenesis is characterized by Gram-negative bacteria activation of series of pro- and anti-inflammatory cytokines from host cells through the pathway of lipopolysaccharide (LPS), LPS-binding protein (LBP) and CD14. The present study investigated the expression profiles of interleukin (IL)-1β and IL-10 in periodontal health and disease, and examined the effects of Escherichia coli LPS and LBP interaction on the expression of IL-1β and IL-10 by human gingival fibroblasts (HGF).
Material and Methods: Gingival biopsies were collected from 44 subjects with chronic periodontitis and 15 periodontally healthy subjects. The expression of IL-1β and IL-10 was detected by immunohistochemistry. The mRNA expression of IL-1β and IL-10 in HGF was detected by RT-PCR with or without recombinant human LBP (rhLBP), while the peptides were analysed by an enzyme-linked immunosorbent assay.
Results: IL-1β was detected in both oral sulcular epithelia of healthy controls and periodontal pocket epithelia of patients. IL-10 was mainly expressed in the intercellular spaces of connective tissues. IL-1β displayed a reverse pattern of expression levels with reference to IL-10, and a negative correlation existed between LBP and the ratio of IL-1β/IL-10. rhLBP suppressed E. coli LPS-induced IL-1β expression by HGF.
Conclusion: An appropriate interplay of LBP and cytokines may have a beneficial effect on innate host defence, thereby contributing to periodontal homeostasis.