RBP4 and rheumatoid arthritis: In the present study, we measured RBP4 concentrations, surrogate markers of enhanced early atherogenesis comprising E-selectin, vascular cell adhesion molecule-1 (VCAM-1), intercellular adhesion molecule-1 (ICAM-1) and monocyte chemoattractant protein-1 (MCP-1), and common carotid artery intima-media thickness and carotid artery plaque by ultrasound in both black and white patients with RA.