... Murat Toprak1, Mehmet Fethi Ceylan3 1. Yuzuncu Yil University, Medical Faculty, Department of Physical Medicine Rehabilitation and Rheumatology, Van, Turkey; 2. Yuzuncu Yil University, Medical ... stress; Rheumatoid arthritis; Anti-CCP antibody; Malondialdehyde; Myeloperoxidase; Synovial fluid Introduction Rheumatoid Arthritis (RA) is a chronic, inflam-matory, autoimmune, systemic disease, ... closely correlated to inflammatory disease activity (Disease Activity Score-DAS28) scores and the presence, development, and extent of joint erosions [1]. Anti-CCP antibodies are actively produced...