Osteopontin is associated with increased arterial stiffness in rheumatoid arthritis.
Bazzichi L, Ghiadoni L, Rossi A, Bernardini M, Lanza M, De Feo F, Giacomelli C, Mencaroni I, Raimo K, Rossi M, et al. Mol Med. 2009 Nov-Dec; 15(11-12):402-6. Epub 2009 Jun 18.