Objective:To investigate the expression pattern of 14 innate immunity related microRNAs ( miRNAs) in brucellosis patients.Methods:By using Real time PCR assay, expression levels of 14 miRNAs in serum samples from brucellosis patients and healthy volunteers were analyzed.Results: Of the 14 miRNAs tested, 13 showed decreased expression in brucellosis patients.And significant Ct differences over one were observed for nine of the miRNAs.In them,five miRNAs,including miR-122,miR-145a,miR-155,miR-301a and miR-146a levels significantly decreased in brucellosis patients (P<0.01).Conclusion:Decreased serum levels of miR-122,miR-145a,miR-155,miR-301a and miR-146a are confirmed and may serve as novel biomarkers for human brucellosis diagno-sis.

Objective:To investigate the expression pattern of microRNA-146a in Brucella patients and its correlation with antibody titers.Methods: By using real time PCR assay, expression levels of microRNA-146a in sera samples from 20 brucellosis patients and 20 healthy volunteers were analyzed.The correlation between expression level of microRNA-146a and serum antibody titers were analyzed with SPSS17.0.Results: A quantification curve of microRNA-146a was constructed with synthesized standard.Expression levels of microRNA-146a among brucellosis patients were significantly lower than those in 20 healthy volunteers (P<0.001).For brucellosis patients,the expression level of microRNA-146a was negatively related with antibody titers (P<0.05). Conclusion:Expression of miRNA-146a in brucellosis patients was significantly inhibited and negatively related with antibody titer.