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Expression of CXCR7, CXCL11 and CXCL12 biological axis in the peripheral blood of patients with lupus nephritis |
ZU Beibei1 MA Qianqian2 RAO Yongmei2 LI Meirong2 LIU Lin2 ZHANG Li3▲#br# |
1.Xuzhou Institute of Medical Science, Jiangsu Province, Xuzhou 221009, China;
2.Department of Rheumatology, Xuzhou Central Hospital, Jiangsu Province, Xuzhou 221009, China;
3.Department of Nephrology, Xuzhou Central Hospital, Jiangsu Province, Xuzhou 221009, China |
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Abstract Objective To investigate the expression level and significance of CXC chemokine receptor 7 (CXCR7) and CXC-type chemokine ligand (CXCL) 11 and CXCL12 in peripheral blood of lupus nephritis (LN). Methods Forty patients with systemic lupus erythematosus (SLE) treated in the Department of Rheumatology, Xuzhou Central Hospital(“our hospital” for short) from October 2018 to October 2020 were selected as the study subjects. SLE patients were divided into the LN group (n 24 cases) and the non-LN group (16 cases). Twenty healthy subjects in the control group were examined in our hospital during the same period. Flow cytometry was used to detect the expression of CD3+CXCR7+T lymphocytes and CD19+CXCR7+B lymphocytes in peripheral blood of the three groups. The concentrations of CXCL11 and CXCL12 in serum were detected by enzyme-linked immunosorbent assay. Results The expression percentage of CD3+CXCR7+T lymphocyte and CD19+CXCR7+B lymphocyte in peripheral blood and the expression levels of CXCL11 and CXCL12 in serum of LN group were higher than those of non-LN group and healthy control group, the differences were statistically significant (P < 0.05). The expression levels of CD3+CXCR7+T lymphocytes, CD19+CXCR7+B lymphocytes, CXCL11 and CXCL12 in the non-LN group were higher than those of healthy control group, the differences were statistically significant(P < 0.05). The expression levels of CD19+CXCR7+ lymphocytes, CD3+CXCR7+ lymphocytes, CXCL11, and CXCL12 in peripheral blood of patients with LN were positively correlated with the quantification of 24 h urinary protein (P < 0.001). Conclusion The high expression levels of CXCR7, CXCL11, and CXCL12 are related to the pathogenesis of LN patients. The CXCR7/CXCL11/CXCL12 may play an important role in the pathogenesis of LN.
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