CXCL8 and rheumatoid arthritis: The research questions to be answered in the present in vitro study were (i) if anti-inflammatory drugs used in the therapy of RA patients can modulate the release of IL-8 and IL-1β by professional and non-professional immune cells being of relevance in the oral cavity and (ii) how the interaction of microorganisms with these cells is being influenced by anti-inflammatory drugs.