Written by Ramezan Ali Ataee, Mahboobeh Sadat Kahani, Gholam Hossein Alishiri, and Zyenab Ahamadi
Parent Category: Year 2016, Volume 8
Category: Volume 8, Issue 2, February 2016
Introduction: Direct detection of microbial super antigens in synovial fluid of patients with rheumatoid arthritis may be able to guide to the design of cost-effective therapies. The purpose of this study was to assess the existence of Staphylococcal enterotoxin A (superantigen A) in the synovial fluid of patients with RA by the PCR and ELISA methods.
Methods: This experimental study was conducted on the synovial fluid of 103 RA patients from Baqiyatallah University of Medical Sciences’ Rheumatology Clinic in Tehran, Iran in 2011-2014. Bacterial cultures, polymerase chain reaction with specific primer pairs and enzyme-linked immunosorbent assay (ELISA) methods were used. The PCR products were subjected to sequence as a confirmatory molecular method results. The data were descriptively analyzed by SPSS Version 19.
Results: The bacteriological study result indicated that, in four cases (3.8%) of the patients, bacterial strains were isolated. The result of PCR molecular method for staphylococcal enterotoxin A gene showed that, 42 of the patients (40.7%) tested positive for the ent A gene. The results of ELISA were positive for staphylococcal enterotoxin A (superantigen A) in 51 cases (49.51%) of the patients’ synovial fluids. The results indicated that the possibility of detecting superantigen A in the SF of RA patients, but the origin of the enterotoxin A gene remained unknown.
Conclusions: The findings of this study may be able to alter the actual theory on the pathogenesis, diagnosis, and treatment of RA patients. In addition, the results have shown the probability of an endogenous origin for the involved superantigen A in RA patients’ synovial fluids.
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Keywords: rheumatoid arthritis, staphylococcal enterotoxin A, ELISA, PCR, synovial fluid
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