CXCL8 and type 2 diabetes mellitus: IL-8 levels were found to be higher in the absence of F. nucleatum than in the presence of this bacterium in HC+CP individuals (mean 46.40 pg/mL vs. 10.80 pg/mL), and in unsatisfactorily controlled T2DM+CP patients (mean 30.86 pg/mL vs. 13.77 pg/mL).