Previous Article | Next Article ![]()
Infect. Immun., Nov 1996, 4450-4455, Vol 64, No. 11
Y Jiang, TR Russell, DT Graves, H Cheng, SH Nong and SM Levitz
Chemokines are a family of low-molecular-weight proinflammatory cytokines
that stimulate recruitment of leukocytes. The chemokines interleukin-8
(IL-8) and monocyte chemoattractant protein 1 (MCP-1) are relatively
specific chemoattractants for neutrophils and monocytes, respectively.
Chemokine expression contributes to the presence of different leukocyte
populations observed in normal and pathologic states. In the present
studies, peripheral blood mononuclear cells (PBMC) were stimulated by
microbes (Candida albicans, Streptococcus mutans, Porphyromonas gingivalis,
and Actinobacillus actinomycetemcomitans) selected based upon their
importance as oral pathogens. IL-8 and MCP-1 gene expression and protein
release were determined by Northern blot (RNA blot) analysis and
enzyme-linked immunosorbent assay. C. albicans, P. gingivalis, and A.
actinomycetemcomitans induced high levels of production of both MCP-1 and
IL-8. S. mutans was a strong inducer of MCP-1, but it did not stimulate
significant production of IL-8. C. albicans, S. mutans, and A.
actinomycetemcomitans were 500 to 5,000 times more potent than P.
gingivalis in terms of MCP-1 production. In general, the microbe-to- PBMC
ratios required for maximum gene expression of MCP-1 were lower than those
for IL-8. However, for actual protein release of MCP-1 versus IL-8,
differences in the effects of various microbe concentrations were observed
only for A. actinomycetemcomitans. These results demonstrate that different
oral pathogens induce specific dose- dependent patterns of chemokine gene
expression and release. Such patterns may help explain the immunopathology
of oral infections, particularly with regard to inflammatory leukocyte
recruitment.
Copyright © 1996, American Society for Microbiology
Monocyte chemoattractant protein 1 and interleukin-8 production in mononuclear cells stimulated by oral microorganisms
The Evans Memorial Department of Clinical Research and the Department of Medicine, Boston University Medical Center Hospital and Boston City Hospital, Massachusetts 02118, USA.
This article has been cited by other articles:
Copyright © 2010 by the American Society for Microbiology. For an alternate route to Journals.ASM.org, visit: http://intl-journals.asm.org | More Info»