Variation in circulating biomarkers of inflammation, oxidative stress, and endotoxemia across disease categories (HF Class I, II, III, IV, LVAD, and HT). (A) CRP. (B) IL-6. (C) TNF-α. (D) ET-1. (E) Adiponectin. (F) LPS. (G) sCD14. (H) Isoprostane. All p-values for linear trend across HF Class I – IV < 0.01 and all p-values for any difference across all patient categories < 0.001. Light bars: unadjusted. Dark bars: Adjusted for age, sex, and race/ethnicity. CRP, C-reactive protein; ET-1, endothelin-1; HF, heart failure; HT, heart transplantation; IL-6, interleukin-6; LPS, lipopolysaccharide; LVAD, left ventricular assist device; sCD14, soluble CD14; TNF-α, tumor necrosis factor-α.