Abstract
Soluble CD14 (sCD14) mediates the response to lipopolysaccharide (LPS) in cells lacking membrane-bound CD14. We determined sCD14 concentrations in the sera of 38 periodontitis patients and 25 healthy controls by enzyme-linked immunosorbent assay. The sCD14 levels in the sera of patients with periodontitis were significantly higher than those of healthy subjects and decreased after treatment. Enhanced levels of sCD14 in serum may contribute to the host response to LPS in periodontitis. Furthermore, we showed in vitro that addition of LPS enhanced the release of sCD14 by monoblastic U937 cells treated with 1alpha,25-dihydroxyvitamin D3. Thus, increased sCD14 levels in periodontitis patients may be due to chronic exposure to LPS.
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