Rheumatoid arthritis (RA) is a chronic inflammatory autoimmune disease that affects diarthrodial joints. RA affects ∼1% of the world’s population and is characterized by synovial hyperplasia, infiltration of large numbers of inflammatory cells into the joints, production of autoantibodies, systemic inflammation, and cardiovascular complications (McInnes and Schett, 2011; Arend and Firestein, 2012).
Interleukin-18 (IL-18), an important proinflammatory cytokine, has been reported to play a potential pathological role in rheumatoid arthritis (RA). Results from previous studies on the association between IL-18 polymorphisms and RA are conflicting. To clarify this, an updated meta-analysis of all available studies on IL-18 polymorphisms and RA was conducted. Eligible articles were identified by searching databases, including PubMed, Ovid, Cochrane Library, EMBASE, and China Knowledge Resource Integrated Database, for the period up to May 1, 2015.
In this study, we investigated the differential expression profiles of cyclooxygenase-2 (COX-2) mRNA and proteins in osteoarthritis (OA) and rheumatoid arthritis (RA) patients to elucidate the role of COX-2 expression in the pathogenesis and development of these diseases and to provide novel drug targets for treating arthritis. A total of 60 patients who received arthroscopic surgeries for treating OA (N = 30) or RA (N = 30) were examined. Fifteen normal synovial tissue samples were included as the control group.
The function of rare genotypes encoding defective variants of sialic acid acetylesterase (SIAE) in some autoimmune diseases, including rheumatoid arthritis (RA), is ambiguous. We determined whether mutations in the SIAE gene are responsible for RA in a Han Chinese population.DNA was prepared from the venous leukocytes of 444 RA patients and 647 normal controls. The coding regions and adjacent intron sequences of SIAE were amplified by polymerase chain reaction. The products were then subjected to sequencing analysis.
Using a meta-analysis framework, we investigated the association between the NLRP3 rs35829419 polymorphism and increased susceptibility to diverse diseases in humans. Relevant published studies were identified through a comprehensive and systematic electronic search, using the following scientific literature databases: Science Citation Index, the Cochrane Library, PubMed, Embase, CINAHL, Current Contents Index, Chinese Biomedical, the Chinese Journal Full-Text, and the Weipu Journal.
Matrix metalloproteinase-3 (MMP-3) can mediate the occurrence and development of rheumatoid arthritis (RA). The MMP3 promoter gene exhibits polymorphism with 5A/6A alleles. We investigated the correlation between the expression of MMP3 gene polymorphism and RA to provide an objective basis for prognosis evaluation. We enrolled 80 RA patients and 80 healthy subjects.
The pathogenesis of rheumatoid arthritis (RA) is characterized by inflammation. We aimed to examine the roles of double-stranded RNA-activated protein kinase (PKR) and high-mobility group box chromosomal protein 1 (HMGB1) in a rat model of RA. Male SD rats were divided into three groups: control, RA model, and intervention (RA model plus treatment). The model of RA was made by injecting Freund’s adjuvant into the posterior right limb of the rat and the intervention group received a PKR-specific inhibitor C16 after RA modeling.