Cytokine levels in plasma and gingival crevicular fluid in chronic periodontitis.
PURPOSE: To evaluate the Th1/Th2/Th17 cytokine levels in plasma and gingival crevicular fluid (GCF) from chronic periodontitis patients and healthy controls. METHODS: The concentration of interleukin-2 (IL-2), IL-4, IL-6, IL-10, IL-17, TNF, and IFN-gamma were determined using a flow cytometric multiplex immunoassay (CBA), and was compared between the periodontitis group and the healthy group. Spearman rho coefficient was used to correlate cytokines in GCF in the periodontitis group and the healthy group, respectively. RESULTS: Comparisons of two groups of Th1/Th2/Th17 cytokine levels in plasma and GCF showed no statistically significant differences (P > 0.05), except Th17 (IL-17) level in plasma that was higher in the periodontitis group than the healthy group (P < 0.05). A stronger correlation between IL-17/IL-4 and IL-17/IL-10 was observed in periodontitis patients than in healthy controls.
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