Human monocytes were isolated from PBMCs from eight healthy individuals and cultured with S. parasanguinis (SP, 1.25 × 106 bacterial cells/mL) or LTA from Streptococcus pyogenes or cocaine (1 μM) for 48 h. Levels of MCP-4 (A), MDC (B), MIP-3α (C), and TARC (D) were evaluated in the cell culture supernatants. Paired one-way ANOVA tests were used to determine statistical significance; * P < 0.05, ** P < 0.01, *** P < 0.001, and **** P < 0.0001.