Serum retinol-binding protein 4 is associated with insulin resistance in patients with early and untreated rheumatoid arthritis

Retinol-binding protein 4 (RBP4), systemic inflammation and insulin resistance (IR) are linked, yet the determinants of RBP4 and its impact on IR in rheumatoid arthritis (RA) are incompletely understood. The aim of this study was to explore the prevalence of IR in RA and investigate whether the serum levels of RBP4 were associated with IR in patients with RA.In this study, 403 individuals with newly diagnosed and untreated RA were consecutively...