检验医学 ›› 2019, Vol. 34 ›› Issue (12): 1066-1071.DOI: 10.3969/j.issn.1673-8640.2019.12.002

• 临床应用研究?论著 • 上一篇    下一篇

重型β- 地中海贫血患儿异基因造血干细胞移植术后淋巴细胞亚群重建分析

陈诗杨1, 付笑迎1, 徐刚1, 林镇湖1, 罗美珠1, 麦惠容2, 陈运生1, 刘四喜2   

  1. 1.深圳市儿童医院检验科,广东 深圳 518038
    2.深圳市儿童医院血液肿瘤科,广东 深圳 518038
  • 收稿日期:2018-08-22 出版日期:2019-12-30 发布日期:2020-01-03
  • 作者简介:null

    作者简介:陈诗杨,女,1989年生,学士,主管技师,主要从事流式细胞学检验工作。

  • 基金资助:
    广东省医学科学技术研究基金项目(201711515315444);深圳市科技创新委员会基金项目(JCY20160429175623274);深圳市三名工程项目(SZSM201512033);深圳小儿血液肿瘤分子医学公共服务平台项目

Monitoring lymphocyte subsets after β-mediterranean anemia allogeneic hematopoetic stem cell transplantation in children

CHEN Shiyang1, FU Xiaoying1, XU Gang1, LIN Zhenhu1, LUO Meizhu1, MAI Huirong2, CHEN Yunsheng1, LIU Sixi2   

  1. 1. Department of Clinical Laboratory,Shenzhen Children's Hospital,Shenzhen 518038,Guangdong,China
    2. Department of Haematology and Oncology,Shenzhen Children's Hospital,Shenzhen 518038,Guangdong,China
  • Received:2018-08-22 Online:2019-12-30 Published:2020-01-03

摘要:

目的 动态监测重型β-地中海贫血患儿异基因造血干细胞移植(allo-HSCT)术前及术后第1、2、3、6和12个月淋巴细胞亚群比例的变化,探讨淋巴细胞的恢复情况及重建特点。方法 选取行allo-HSCT的27例重型β-地中海贫血患儿,其中人类白细胞抗原(HLA)全相合移植术20例, HLA不全相合移植术7例。采用流式细胞术(FCM)动态监测患者移植前及术后1年内CD3+T细胞、CD3+CD4+T细胞、CD3+CD8+T细胞、CD4+/CD8+比值、CD19+B细胞及CD16+CD56+自然杀伤(NK)细胞比例的变化。结果 与allo-HSCT术前比较,重型β-地中海贫血患儿术后CD16+CD56+NK细胞比例恢复最快,术后第1、2、3、6个月均高于术前(P<0.05),第12个月恢复至术前水平(P>0.05)。CD3+T细胞比例术后第1个月与术前比较差异无统计学意义(P>0.05),第2个月起降低且低于术前(P<0.01),第12个月仍低于术前(P<0.01)。CD3+CD8+T细胞比例术后第1个月明显高于术前(P<0.01),随后逐渐下降,至术后第12个月时仍高于术前(P<0.05)。CD3+CD4+T细胞比例术后明显低于术前(P<0.01),且呈缓慢回升趋势,至术后第12个月仍明显低于术前(P<0.01)。CD4+/CD8+比值长期倒置,虽然呈缓慢上升趋势,但仍明显低于术前(P<0.01)。CD19+B细胞比例术后第1个月明显低于术前(P<0.01),术后第2个月恢复至术前水平(P>0.05),术后第6个月和第12个月明显高于术前(P<0.01、P<0.05)。术前及术后同一时间点男性、女性患儿之间及HLA全相合移植与HLA不全相合移植之间各淋巴细胞亚群比例差异均无统计学意义(P>0.05)。结论 重型β-地中海贫血患儿allo-HSCT术后淋巴细胞亚群的免疫重建恢复顺序依次为CD16+CD56+NK细胞、CD3+CD8+T细胞、CD19+B细胞、CD3+T细胞、CD3+CD4+T细胞。

关键词: 淋巴细胞亚群, 异基因造血干细胞移植, 免疫功能重建, 儿童, 重型β-地中海贫血;

Abstract:

Objective To monitor the development of lymphocyte subsets on the 1st,2nd,3rd,6th and 12th months dynamically after allogeneic hematopoetic stem cell transplantation(allo-HSCT) in children with β-mediterranean anemia,and to observe the immune reconstitution and characteristic of lymphocyte subsets. Methods A total of 27 patients with severe β-mediterranean anemia who underwent allo-HSCT were enrolled. Among them,20 cases received human leukocyte antigen(HLA) matched transplantation,and 7 cases received HLA mismatched transplantation. By flow cytometry,the percentage changes of CD3+T cells,CD3+CD4+T cells,CD3+CD8+T cells,CD4+/CD8+ratio,CD19+B cells and CD16+CD56+ natural killer(NK) cells were monitored dynamically in 1 year. Results CD16+CD56+ NK cells showed the fastest recovery,the percentages on the 1st,2nd,3rd and 6th months were higher than those of pre-operation(P<0.05),and it returned to the percentages of pre-operation on the 12th month(P>0.05). The percentage of CD3+T cells had no statistical significance on the 1st month compared to pre-operation(P>0.05),but it started to decrease on the 2nd month(P<0.01),and on the 12th month it was still lower than that of pre-operation(P<0.01). The percentage of CD3+CD8+ T cells on the 1st month was higher than that of pre-operation(P<0.01),and then it started to decrease but still high on the 12th month(P<0.05). The percentage of CD3+CD4+T cells was lower than that of pre-operation(P<0.01),showing a trend of slow recovery,and was still lower than that of pre-operation,even on the 12th month(P<0.01). CD4+/CD8+ ratio inverted in the long term,but it was still lower than that of pre-operation although it continued to show increase(P<0.01). CD19+ B cells decreased on the 1st month(P<0.01)then recovered after the 2nd month(P>0.05),which were higher than those of pre-operation at the 6th and 12th months(P<0.01,P<0.05). The immune reconstitution had no statistical significance at each time point between male and female patients(P>0.05),and so did HLA matched transplantation and mismatched transplantation(P>0.05). Conclusions The recovery of lymphocyte subsets after β-mediterranean anemia allo-HSCT in children following the regulation:CD16+CD56+ NK cells, CD3+CD8+ T cells,CD19+ B cells,CD3+ T cells and CD3+CD4+ T cells.

Key words: Lymphocyte subset, Allogeneic hematopoetic stem cell transplantation, Immune reconstitution, Children, Severe β-mediterranean anemia;

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