CRP and periodontitis: Therefore, in patients suffering from CVD as AAA, the concentrations of immunoglobulin G (IgG) against periodontal bacteria (Nakagawa et al., 1994; Albandar et al., 2001; Dye et al., 2009; Pussinen et al., 2011), LPS (Ebersole et al., 2010) and C-reactive protein (CRP) might be relevant periodontitis-related blood biomarkers to characterize sequelae linked to periodontitis.