An inverse correlation between IGF-1 levels and asymmetric dimethylarginine (ADMA), an endogenous endothelial nitric oxide synthase inhibitor that impairs nitric oxide production and secretion promoting endothelial dysfunction, was found. No significant association was found between IGF-1 and IGFBP-3 levels with angiopoietin-2, osteopontin, disease activity, systemic inflammation, metabolic syndrome features, or adipokines.
