Value of dynamic monitoring of absolute value and function of peripheral blood lymphocyte subsets in predicting the risk of early viral infection after kidney transplantation
10.3969/j.issn.1674-7445.2022.01.013
- VernacularTitle:外周血淋巴细胞亚群绝对值和功能的动态监测在肾移植术后早期病毒感染风险预测中的价值
- Author:
Qianqian ZHANG
1
;
Yalong XIE
;
Feng WANG
;
Ying LUO
;
Song CHEN
;
Weijie ZHANG
;
Sheng CHANG
Author Information
1. Institute of Organ Transplantation, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Key Laboratory of Organ Transplantation of Ministry of Education, Key Laboratory of Organ Transplantation of National Health Commission of China, Key Laboratory of Organ Transplantation of Chinese Academy of Medical Sciences, Wuhan 430030, China
- Publication Type:Research Article
- Keywords:
Kidney transplantation;
Immune monitoring;
Lymphocyte subset;
Flow cytometry;
Peripheral blood mononuclear cell;
Interferon-γ;
Individualized treatment;
CD4+T cell;
CD8+T cell;
Natural killer cell
- From:
Organ Transplantation
2022;13(1):80-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the predictive and diagnostic value of absolute value and function of different lymphocyte subsets in evaluating the risk of early viral infection after kidney transplantation. Methods Ninety-five kidney transplant recipients were enrolled in this prospective observational cohort study, and divided into the stable group (n=77) and infection group (n=18) according to postoperative immune status. Peripheral blood samples were collected for flow cytometry before operation, and 2 weeks, 1 month, 2 months and 6 months after operation. The dynamic changes of the absolute values of CD4+T cells, CD8+T cells and natural killer (NK) cells were compared between two groups. The function of lymphocyte subsets in two groups was evaluated by detecting the proportion of interferon (IFN)-γ+CD4+T cells, IFN-γ+CD8+T cells and IFN-γ+NK cells. The value of the absolute values and function of lymphocyte subsets in predicting and diagnosing viral infection in the early stage after kidney transplantation was evaluated. Results During viral infection, the absolute values of CD4+T cells, CD8+T cells and NK cells in the infection group were at a relatively low level. At 2 months after operation, the absolute values of CD4+T cells and NK cells in the infection group were lower than those in the stable group. At 6 months after operation, the absolute values of CD4+T cells and CD8+T cells in the infection group were significantly lower compared with those in the stable group (all P < 0.05). During viral infection, the proportion of IFN-γ+CD4+T cells, IFN-γ+CD8+T cells and IFN-γ+NK cells in the infection group were all at a relatively low level, especially that of IFN-γ+CD8+T cells decreased most significantly. At postoperative 2 months, the proportion of IFN-γ+CD8+T cells and IFN-γ+NK cells in the infection group was significantly higher than those in the stable group. At 6 months after operation, the proportion of IFN-γ+CD4+T cells and IFN-γ+CD8+T cells in the infection group was significantly higher than those in the stable group (all P < 0.05). Logistic regression analysis showed that the increasing proportion of IFN-γ+CD8+T cells and IFN-γ+NK cells was correlated with the increasing risk of viral infection at 2 months after operation (both P < 0.05). The receiver operating characteristic (ROC) curve demonstrated that the diagnostic value of absolute values of lymphocyte subsets combined with IFN-γ secretion function for viral infection in the immunocompromised recipients was significantly higher than that of absolute values of lymphocyte subsets alone (P < 0.05). Conclusions Dynamic monitoring of the changes of absolute values and function of lymphocyte subsets provides critical reference value for the prediction, diagnosis and medication guidance of viral infection.
