During the establishment and development of rheumatoid arthritis, many inflammatory mediators play a key role in bone destruction and inflammation of the synovial membrane, including tumor necrosis factor (TNF-α), interleukin-1β, interleukin-6, nitric oxide (NO), prostaglandins, reactive oxygen species (ROS), platelet-activating factor, leukotrienes, enzymes (lipoxygenases, cyclooxygenases (COX-1 and COX-2), and phospholipases) [5, 6]. This evidence concerns the gene PTGS2 and rheumatoid arthritis.