ROLE OF CCR5 -2150 A>G AND Δ32 POLYMORPHISMS IN RHEUMATOID ARTHRITIS: A CASE-CONTROL STUDY IN A SICILIAN POPULATION
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Rheumatoid arthritis (RA) is an inflammatory joint disorder whose progression leads to destruction of cartilage and bone. Chemokines, molecules able to induce chemotaxis in inflammation, are involved RA pathogenesis. Aim of this study was to determine whether -2150 A>G and delta32 (432) polymorphisms in the chemokine receptor (CCR5) confer susceptibility to rheumatoid arthritis. Polymorphisms were assessed in 70 seropositive RA patients and 200 healthy individuals of Messina and province. About -2150 A>G polymorphism, a significant increase in AG genotype frequency was observed in controls than in patients, despite a not significant difference in allelic frequencies. Conversely, allelic and genotypic frequencies related to A32 polymorphism were significantly higher in controls group than in patients. Furthermore, in the patient group no individuals with A32/432 genotype were found. These results suggest that CCR5 polymorphisms seem to play an important role in susceptibility to exerting a protective role in the disease..
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