CXCL8 and irritable bowel syndrome: In IBD patients with active disease (n = 51), S-Nampt positively correlated with IL-6 (ρ = 0.52, p = 0.0001), IL-8 (ρ = 0.39, p = 0.005), and TNFα (ρ = 0.33, p = 0.018).