[The expression and clinical significance of IL-17AR on peripheral blood B cells of patients with systemic lupus erythematosus].

OBJECTIVE

To investigate the expressions of Interleukin-17A receptor (IL-17AR) on the peripheral blood B lymphocytes of SLE patients and to analyze the correlations between IL-17AR and clinical parameters.

METHODS

Expression of IL-17AR on peripheral blood CD19(+);B lymphocytes were analyzed in 60 SLE patients and 33 healthy controls by flow cytometry. The difference of IL-17AR expression levels in two groups were compared. Furthermore, the correlation between IL-17AR expressions and clinical some measures, such as ESR, CRP, complement 3(C3), complement 4(C4), the amount of serum IgG, anti double strands DNA antibody, anti nuclear antibody, SLEDAI score and urine protein excretion were analyzed.

RESULTS

Compared with healthy subjects, the proportions of B cells expressing IL-17AR were higher among SLE patients. In SLE patients, groups with mouth ulcer, serositis, renal lesions or immunologic abnormality were higher than the negative groups separately. The positive correlations were observed between IL-17AR expression levels and clinical measure of the SLEDAI, CRP and serum triglyceride level. The negative correlation was observed between IL-17AR expression levels and clinical measure of the serum indirect bilirubin level, serum albumin level.

CONCLUSIONS

Interleukin-17A receptor expression increased on peripheral blood B cells of SLE patients, and correlate with clinical measures.