检验医学 ›› 2022, Vol. 37 ›› Issue (12): 1169-1173.DOI: 10.3969/j.issn.1673-8640.2022.12.013

• 临床应用研究·论著 • 上一篇    下一篇

高浓度胆红素对流式细胞术外周血淋巴细胞亚群检测的干扰和消除方法

薛燕1, 许俐1, 党利亨1, 王朝1, 崔亚琼1, 王萍1, 王宁1, 张新杰1, 刘洋2()   

  1. 1.天津市儿童医院(天津大学儿童医院) 天津市儿科研究所 天津市儿童出生缺陷防治重点实验室,天津 300134
    2.天津市儿童医院(天津大学儿童医院)新生儿内科,天津 300134
  • 收稿日期:2022-02-09 修回日期:2022-07-11 出版日期:2022-12-30 发布日期:2023-02-02
  • 通讯作者: 刘洋,E-mail:etyyly@163.com。
  • 作者简介:薛 燕,女,1991年生,硕士,实习研究员,主要从事流式细胞术检测工作。
  • 基金资助:
    天津市卫生健康科技项目(KJ20166);天津市科技计划项目(21JCYBJC00370)

Interference of high levels of bilirubin on lymphocyte subset determination in peripheral blood by flow cytometry and its elimination methods

XUE Yan1, XU Li1, DANG Liheng1, WANG Chao1, CUI Yaqiong1, WANG Ping1, WANG Ning1, ZHANG Xinjie1, LIU Yang2()   

  1. 1. Tianjin Key Laboratory of Birth Defects for Prevention and Treatment,Tianjin Pediatrics Research Institute,Tianjin Children's Hospital(Children's Hospital of Tianjin University),Tianjin 300134,China
    2. Department of Newborn Medicine,Tianjin Children's Hospital(Children's Hospital of Tianjin University),Tianjin 300134,China
  • Received:2022-02-09 Revised:2022-07-11 Online:2022-12-30 Published:2023-02-02
  • Contact: LIU Yang,E-mail:etyyly@163.com。

摘要:

目的 探讨高浓度胆红素对流式细胞术(FCM)外周血淋巴细胞亚群检测的干扰和消除方法。方法 选取51例血清总胆红素(TB)>200 μmol/L且进行淋巴细胞亚群检测的患儿,将直接胆红素(DBil)升高的6例患儿纳入高DBil组,将间接胆红素(IBil)升高的45例患儿纳入高IBil组。以6名健康体检儿童(对照组)无黄疸血液样本为对照样本,将高DBil血浆加入对照样本中,制备成干扰样本。采用配对差异实验分析胆红素对FCM检测淋巴细胞亚群的干扰,并评估胆红素干扰的剂量。评估洗涤-染色-裂解法和染色-裂解-洗涤法对胆红素干扰的消除作用。结果 采用FCM检测淋巴细胞亚群,高IBil组样本无影响,高DBil组样本均出现异硫氰酸荧光素(FITC)标记的CD3-与CD3+细胞群荧光表达分界不清。采用染色-裂解法处理干扰样本后,出现FITC标记的CD3-与CD3+细胞群荧光表达分界不清。DBil≤150 μmol/L对FCM检测无影响,DBil≥200 μmol/L对FCM检测的干扰较大。采用洗涤-染色-裂解法和染色-裂解-洗涤法处理均可消除DBil的干扰。经染色-裂解-洗涤法处理的干扰样本与对照样本比较,淋巴细胞亚群检测结果差异均无统计学意义(P>0.05),2种样本之间CD3+、CD3+CD8+、CD3+CD4+、CD3-CD16/56+、CD3-CD19+细胞百分比和CD4/CD8比值呈显著正相关(r值分别为0.977、0.994、0.95、0.941、0.996、0.965,P<0.05)。结论 高浓度DBil会干扰FITC的荧光信号,导致FCM检测FITC标记的CD3-与CD3+细胞群荧光表达分界不清。采用染色-裂解-洗涤法处理可最大程度地消除DBil的干扰。

关键词: 胆红素, 流式细胞术, 淋巴细胞亚群, 干扰, 消除方法

Abstract:

Objective To investigate the interference of high levels of bilirubin on lymphocyte subset determination in peripheral blood by flow cytometry(FCM) and its elimination methods. Methods Totally,51 patients with serum total bilirubin(TB) >200 μmol/L and undergoing lymphocyte subset determination were enrolled,which included 6 cases of elevated direct bilirubin(DBil)(DBil group) and 45 cases of elevated indirect bilirubin(IBil)(IBil group). The non-jaundiced samples from 6 healthy children(control samples)were collected,and plasmas with high DBil were added to the control samples to prepare for interference samples. Paired difference experiments were used to analyze the interference of bilirubin on lymphocyte subsets determined by FCM and to assess the dose of bilirubin interference. The effects of washing-staining-lysis method and staining-lysis-washing method on bilirubin interference elimination were assessed. Results In elevated IBil group,lymphocyte subset determination was not interfered. But in elevated DBil group,the fluorescence expressions of fluorescein isothiocyanate(FITC)-labeled CD3- cells and CD3+ cells were not clearly demarcated. For interference samples treated by staining-lysis method,the fluorescence expressions of FITC-labeled CD3- cells and CD3+ cells were also not clearly demarcated. When DBil≤150 μmol/L,no effect on FCM was found. When DBil≥200 μmol/L,the interference was greater. Such interference could be eliminated to the greatest extent by both washing-staining-lysis method and staining-lysis-washing method. Staining-lysis-washing method was more operable,and no significant difference was found in lymphocyte subsets between interference samples and control samples(P>0.05),and the percentages of CD3+,CD3+CD8+,CD3+CD4+,CD3-CD16/56+,CD3-CD19+ cells and CD4/CD8 ratios between the 2 samples were positively correlated(r=0.977,0.994,0.950,0.941,0.996 and 0.965,P<0.05). Conclusions High level of DBil can interfere with the fluorescence expressions of FITC-labeled CD3- cells and CD3+ cells in lymphocyte subset determination in peripheral blood by FCM. Staining-lysis-washing method can eliminate such interference to the greatest extent.

Key words: Bilirubin, Flow cytometry, Lymphocyte subset, Interference, Elimination method

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