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Changes in the levels of blocking antibody and regulatory T cells after active immunotherapy inpatients with recurrent spontaneous abortion |
ZHENG Jing1, ZHUO Yue2, LIU Yanni3 |
1 Department of Clinical Medicine Laboratory,Binzhou Medical University Hospital,Binzhou 256603,P.R.China; 2 Bincheng District Centers for Disease Control and Prevention; 3 Department of Obstetrics and Gynecology, Binzhou Medical University Hospital |
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Abstract Objective To investigate the pregnancy outcome by active immunotherapy for recurrent spontaneous abortions(RSA) and the changes of blocking antibody (BA) and the levels of CD4+CD25+T cells and CD4+CD25highTreg cells in peripheral blood after immunotherapy.Methods Detection of BA by micro lymphocytic toxicity test (MLCT),300 negative patients randomly selected were treated by active immunotherapy of lymphocytes, and the pregnancy outcomes were followed. Blocking efficiency and the levels of CD4+CD25+T cells and CD4+CD25highTreg cells in peripheral blood were detected by flow cytometry in 100 cases randomly selected.Results Of the 300 patients receiving active immunotherapy,265 were pregnant,and 35 were still in the immunotherapy.In the patients with pregnancy,10 cases had an early abortion,165 had successful delivery and 90 were still pregnant, and the success rate of the active immunotherapy was 96.2%. The level of BA was significantly higher after active immunotherapy (37.73±2.42%) than that before immunotherapy (7.25±0.39%) in 100 patients.The blocking efficiencies of CD3,CD4 and CD25 were higher than that before immunotherapy,and CD3 and CD25 increased very significantly (P<0.01).The ratios of CD4+CD25+T cells and CD4+CD25highTreg cells were significantly higher than that before active immunotherapy,and the difference was statistically significant(P<0.01,P<0.05).Conclusion The occurrence of RSA may be related to the decreases of blocking antibody,CD4+CD25+T cells and CD4+CD25highTreg cells in the peripheral blood of the patients.Lymphocyte active immunotherapy can significantly improve the levels of blocking antibody and the ratios of CD4+CD25+T cells and CD4+CD25highTreg cells in peripheral blood. It is a safe and effective way to treat RSA.
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Received: 13 April 2018
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