Renin-angiotensin system components enriched in RA vs OA patients
Components of the renin-angiotensin system (RAS), such as renin, angiotensin-converting enzyme (ACE), matrix metalloproteinase-13 (MMP-13) and vascular endothelial growth factor (VEGF), are more elevated in the synovial fluid of patients with rheumatoid arthritis (RA) than with osteoarthritis (OA), a recent study has shown.