RESUMO
Objective To dynamically monitor the changes of peripheral blood lymphocyte subsets of renal transplant recipients and investigate the relationship between lymphocyte subsets with infection and rejection.Methods The clinical data of allogenic kidney transplantation recipients and living relative donors in the Department of Kidney Transplantation of the First Affiliated Hospital of Zhengzhou University were prospectively collected from June 2015 to December 2016.The data of lymphocyte subsets and other related indexes were obtained from renal transplant recipients and relatives of the same period.Results Sixty-four cases of living-relative donors and 351 cases of renal transplant recipients were enrolled in this study,and the recipients were divided into 3 groups:infection group (67 cases),acute rejection group (46 cases),and stable group (238 cases),according to the diagnostic criteria.There was significant difference in the concentration distribution of lymphocytes between the stable group and the control group (P<0.05).The stable frequency distribution range of the stable group was as follows (cells/μL):Lym (1 000-1 500),T (<1 500),CD4+ (<1 000),CD8+ (<1 000),B (<300),NK (100-300),CD4+/CD8+ (0.5-1.0).The number of Lym,T,CD4+,CD8+,NK and B cells in the preoperative patients was less than that in the healthy population (P<0.05);The number of Lym,T,CD4+, CD8+,B and NK cells was gradually decreased in the postoperative infection group,which was less than that in the stable group (P<0.05).After treatment the indicators gradually restored to the level in the stable group level;the number of T,CD4+,CD8+,B cells was highly correlated with infection.The number of T and CD4+ cells,and CD4+/CD8+ ratio were significantly increased in acute rejection group as compared with the stable group,and gradually decreased after the rejection was reversed.The number of T,CD4+,CD8+ cells was highly correlated with rejection.Lymphocyte subsets had a predictive effect on infection and rejection of recipients,and CD4+ cell count and CD4+/CD8+ ratio were independent risk factors.Conclusion The monitoring of lymphocyte subsets has an important clinical value in the evaluation of immune status and individual treatment of renal recipients.