淋巴结细针穿刺标本的流式细胞术分析

Objective Comparative evaluation of flow cytometric immunophenotyping in the diagnosis and differentiation of lymphadenopathy,lymphoma and reactive lymphoid hyperplasia. Methods Ninty-nine fine-needle aspiration specimens from patients with tentative clinical lymphoprofierative disorders were consecutively analyzed by both cytology and flow cytometry with histology results as the gold standard. The three color antibodies including CD3,CD3,CD4,CD5,CD10,CD19,CD20,CD23,CD45,K,λ,FMC7 and CD34 were used for cell composition evaluation and cells with abnormal phenotype. Lymphoma cases were classified according to new WHO classification and subtypes were categorized by immunophenotypic analysis. The results from flow cytometry and cytology were compared. Results By cytological study, 40 of 99 cases were diagnosed with lymphoma, 29 cases were diagnosed with metastatic carcinoma, and 30 cases were diagnosed with reactive lymphoid hyperplasia, necrosis or tuberculosis. Among them, 2 non-Hodgkin lymphoma(NHL) cases were misdiagnosed as reactive lymphoid hyperplasia by cytology. Biopsy was performed in 18 cases of NHL including 16 B-NHL and 2 T-NHL By flow cytometry study, 35 of 99 eases were diagnosed with lymphoma, including 4 cases of lymphoblast lymphoma, 1 case of T-cell lymphoma, and 30 eases of other B-NHL For those 30 cases of B-NHL, 28 cases showed monoclonal light chain expression, and k: λ orλ: k atios exceed 3: 1, and B-cell proportion was (73. 2±27. 2)%. Twenty-six cases could be sub-classified by immunophenotyped. Among 16 histologically confirmed B-NHL cases, only 2 cases diagnosed with follicular lymphoma showed discrepancy with flow cytometry results. In all cases diagnosed with reactive lymphoid hyperplasia and metastasis carcinoma , no abnormal lymphocytes can be found, and k: λ or k: λ ratios were less than 3: 1. Conclusions Fine-needle aspiration analysis with flow eytometrie immunophenotyping can be helpful in diagnosis and differential diagnosis as well as sub-classification of NHL     

淋巴结细针穿刺标本的流式细胞术分析

Objective Comparative evaluation of flow cytometric immunophenotyping in the diagnosis and differentiation of lymphadenopathy,lymphoma and reactive lymphoid hyperplasia. Methods Ninty-nine fine-needle aspiration specimens from patients with tentative clinical lymphoprofierative disorders were consecutively analyzed by both cytology and flow cytometry with histology results as the gold standard. The three color antibodies including CD3,CD3,CD4,CD5,CD10,CD19,CD20,CD23,CD45,K,λ,FMC7 and CD34 were used for cell composition evaluation and cells with abnormal phenotype. Lymphoma cases were classified according to new WHO classification and subtypes were categorized by immunophenotypic analysis. The results from flow cytometry and cytology were compared. Results By cytological study, 40 of 99 cases were diagnosed with lymphoma, 29 cases were diagnosed with metastatic carcinoma, and 30 cases were diagnosed with reactive lymphoid hyperplasia, necrosis or tuberculosis. Among them, 2 non-Hodgkin lymphoma(NHL) cases were misdiagnosed as reactive lymphoid hyperplasia by cytology. Biopsy was performed in 18 cases of NHL including 16 B-NHL and 2 T-NHL By flow cytometry study, 35 of 99 eases were diagnosed with lymphoma, including 4 cases of lymphoblast lymphoma, 1 case of T-cell lymphoma, and 30 eases of other B-NHL For those 30 cases of B-NHL, 28 cases showed monoclonal light chain expression, and k: λ orλ: k atios exceed 3: 1, and B-cell proportion was (73. 2±27. 2)%. Twenty-six cases could be sub-classified by immunophenotyped. Among 16 histologically confirmed B-NHL cases, only 2 cases diagnosed with follicular lymphoma showed discrepancy with flow cytometry results. In all cases diagnosed with reactive lymphoid hyperplasia and metastasis carcinoma , no abnormal lymphocytes can be found, and k: λ or k: λ ratios were less than 3: 1. Conclusions Fine-needle aspiration analysis with flow eytometrie immunophenotyping can be helpful in diagnosis and differential diagnosis as well as sub-classification of NHL     

淋巴结细针穿刺标本的流式细胞术分析

Objective Comparative evaluation of flow cytometric immunophenotyping in the diagnosis and differentiation of lymphadenopathy,lymphoma and reactive lymphoid hyperplasia. Methods Ninty-nine fine-needle aspiration specimens from patients with tentative clinical lymphoprofierative disorders were consecutively analyzed by both cytology and flow cytometry with histology results as the gold standard. The three color antibodies including CD3,CD3,CD4,CD5,CD10,CD19,CD20,CD23,CD45,K,λ,FMC7 and CD34 were used for cell composition evaluation and cells with abnormal phenotype. Lymphoma cases were classified according to new WHO classification and subtypes were categorized by immunophenotypic analysis. The results from flow cytometry and cytology were compared. Results By cytological study, 40 of 99 cases were diagnosed with lymphoma, 29 cases were diagnosed with metastatic carcinoma, and 30 cases were diagnosed with reactive lymphoid hyperplasia, necrosis or tuberculosis. Among them, 2 non-Hodgkin lymphoma(NHL) cases were misdiagnosed as reactive lymphoid hyperplasia by cytology. Biopsy was performed in 18 cases of NHL including 16 B-NHL and 2 T-NHL By flow cytometry study, 35 of 99 eases were diagnosed with lymphoma, including 4 cases of lymphoblast lymphoma, 1 case of T-cell lymphoma, and 30 eases of other B-NHL For those 30 cases of B-NHL, 28 cases showed monoclonal light chain expression, and k: λ orλ: k atios exceed 3: 1, and B-cell proportion was (73. 2±27. 2)%. Twenty-six cases could be sub-classified by immunophenotyped. Among 16 histologically confirmed B-NHL cases, only 2 cases diagnosed with follicular lymphoma showed discrepancy with flow cytometry results. In all cases diagnosed with reactive lymphoid hyperplasia and metastasis carcinoma , no abnormal lymphocytes can be found, and k: λ or k: λ ratios were less than 3: 1. Conclusions Fine-needle aspiration analysis with flow eytometrie immunophenotyping can be helpful in diagnosis and differential diagnosis as well as sub-classification of NHL     

淋巴结细针穿刺标本的流式细胞术分析

Objective Comparative evaluation of flow cytometric immunophenotyping in the diagnosis and differentiation of lymphadenopathy,lymphoma and reactive lymphoid hyperplasia. Methods Ninty-nine fine-needle aspiration specimens from patients with tentative clinical lymphoprofierative disorders were consecutively analyzed by both cytology and flow cytometry with histology results as the gold standard. The three color antibodies including CD3,CD3,CD4,CD5,CD10,CD19,CD20,CD23,CD45,K,λ,FMC7 and CD34 were used for cell composition evaluation and cells with abnormal phenotype. Lymphoma cases were classified according to new WHO classification and subtypes were categorized by immunophenotypic analysis. The results from flow cytometry and cytology were compared. Results By cytological study, 40 of 99 cases were diagnosed with lymphoma, 29 cases were diagnosed with metastatic carcinoma, and 30 cases were diagnosed with reactive lymphoid hyperplasia, necrosis or tuberculosis. Among them, 2 non-Hodgkin lymphoma(NHL) cases were misdiagnosed as reactive lymphoid hyperplasia by cytology. Biopsy was performed in 18 cases of NHL including 16 B-NHL and 2 T-NHL By flow cytometry study, 35 of 99 eases were diagnosed with lymphoma, including 4 cases of lymphoblast lymphoma, 1 case of T-cell lymphoma, and 30 eases of other B-NHL For those 30 cases of B-NHL, 28 cases showed monoclonal light chain expression, and k: λ orλ: k atios exceed 3: 1, and B-cell proportion was (73. 2±27. 2)%. Twenty-six cases could be sub-classified by immunophenotyped. Among 16 histologically confirmed B-NHL cases, only 2 cases diagnosed with follicular lymphoma showed discrepancy with flow cytometry results. In all cases diagnosed with reactive lymphoid hyperplasia and metastasis carcinoma , no abnormal lymphocytes can be found, and k: λ or k: λ ratios were less than 3: 1. Conclusions Fine-needle aspiration analysis with flow eytometrie immunophenotyping can be helpful in diagnosis and differential diagnosis as well as sub-classification of NHL     

淋巴结细针穿刺标本的流式细胞术分析

Objective Comparative evaluation of flow cytometric immunophenotyping in the diagnosis and differentiation of lymphadenopathy,lymphoma and reactive lymphoid hyperplasia. Methods Ninty-nine fine-needle aspiration specimens from patients with tentative clinical lymphoprofierative disorders were consecutively analyzed by both cytology and flow cytometry with histology results as the gold standard. The three color antibodies including CD3,CD3,CD4,CD5,CD10,CD19,CD20,CD23,CD45,K,λ,FMC7 and CD34 were used for cell composition evaluation and cells with abnormal phenotype. Lymphoma cases were classified according to new WHO classification and subtypes were categorized by immunophenotypic analysis. The results from flow cytometry and cytology were compared. Results By cytological study, 40 of 99 cases were diagnosed with lymphoma, 29 cases were diagnosed with metastatic carcinoma, and 30 cases were diagnosed with reactive lymphoid hyperplasia, necrosis or tuberculosis. Among them, 2 non-Hodgkin lymphoma(NHL) cases were misdiagnosed as reactive lymphoid hyperplasia by cytology. Biopsy was performed in 18 cases of NHL including 16 B-NHL and 2 T-NHL By flow cytometry study, 35 of 99 eases were diagnosed with lymphoma, including 4 cases of lymphoblast lymphoma, 1 case of T-cell lymphoma, and 30 eases of other B-NHL For those 30 cases of B-NHL, 28 cases showed monoclonal light chain expression, and k: λ orλ: k atios exceed 3: 1, and B-cell proportion was (73. 2±27. 2)%. Twenty-six cases could be sub-classified by immunophenotyped. Among 16 histologically confirmed B-NHL cases, only 2 cases diagnosed with follicular lymphoma showed discrepancy with flow cytometry results. In all cases diagnosed with reactive lymphoid hyperplasia and metastasis carcinoma , no abnormal lymphocytes can be found, and k: λ or k: λ ratios were less than 3: 1. Conclusions Fine-needle aspiration analysis with flow eytometrie immunophenotyping can be helpful in diagnosis and differential diagnosis as well as sub-classification of NHL     

淋巴结细针穿刺标本的流式细胞术分析

Objective Comparative evaluation of flow cytometric immunophenotyping in the diagnosis and differentiation of lymphadenopathy,lymphoma and reactive lymphoid hyperplasia. Methods Ninty-nine fine-needle aspiration specimens from patients with tentative clinical lymphoprofierative disorders were consecutively analyzed by both cytology and flow cytometry with histology results as the gold standard. The three color antibodies including CD3,CD3,CD4,CD5,CD10,CD19,CD20,CD23,CD45,K,λ,FMC7 and CD34 were used for cell composition evaluation and cells with abnormal phenotype. Lymphoma cases were classified according to new WHO classification and subtypes were categorized by immunophenotypic analysis. The results from flow cytometry and cytology were compared. Results By cytological study, 40 of 99 cases were diagnosed with lymphoma, 29 cases were diagnosed with metastatic carcinoma, and 30 cases were diagnosed with reactive lymphoid hyperplasia, necrosis or tuberculosis. Among them, 2 non-Hodgkin lymphoma(NHL) cases were misdiagnosed as reactive lymphoid hyperplasia by cytology. Biopsy was performed in 18 cases of NHL including 16 B-NHL and 2 T-NHL By flow cytometry study, 35 of 99 eases were diagnosed with lymphoma, including 4 cases of lymphoblast lymphoma, 1 case of T-cell lymphoma, and 30 eases of other B-NHL For those 30 cases of B-NHL, 28 cases showed monoclonal light chain expression, and k: λ orλ: k atios exceed 3: 1, and B-cell proportion was (73. 2±27. 2)%. Twenty-six cases could be sub-classified by immunophenotyped. Among 16 histologically confirmed B-NHL cases, only 2 cases diagnosed with follicular lymphoma showed discrepancy with flow cytometry results. In all cases diagnosed with reactive lymphoid hyperplasia and metastasis carcinoma , no abnormal lymphocytes can be found, and k: λ or k: λ ratios were less than 3: 1. Conclusions Fine-needle aspiration analysis with flow eytometrie immunophenotyping can be helpful in diagnosis and differential diagnosis as well as sub-classification of NHL     

淋巴结细针穿刺标本的流式细胞术分析

Objective Comparative evaluation of flow cytometric immunophenotyping in the diagnosis and differentiation of lymphadenopathy,lymphoma and reactive lymphoid hyperplasia. Methods Ninty-nine fine-needle aspiration specimens from patients with tentative clinical lymphoprofierative disorders were consecutively analyzed by both cytology and flow cytometry with histology results as the gold standard. The three color antibodies including CD3,CD3,CD4,CD5,CD10,CD19,CD20,CD23,CD45,K,λ,FMC7 and CD34 were used for cell composition evaluation and cells with abnormal phenotype. Lymphoma cases were classified according to new WHO classification and subtypes were categorized by immunophenotypic analysis. The results from flow cytometry and cytology were compared. Results By cytological study, 40 of 99 cases were diagnosed with lymphoma, 29 cases were diagnosed with metastatic carcinoma, and 30 cases were diagnosed with reactive lymphoid hyperplasia, necrosis or tuberculosis. Among them, 2 non-Hodgkin lymphoma(NHL) cases were misdiagnosed as reactive lymphoid hyperplasia by cytology. Biopsy was performed in 18 cases of NHL including 16 B-NHL and 2 T-NHL By flow cytometry study, 35 of 99 eases were diagnosed with lymphoma, including 4 cases of lymphoblast lymphoma, 1 case of T-cell lymphoma, and 30 eases of other B-NHL For those 30 cases of B-NHL, 28 cases showed monoclonal light chain expression, and k: λ orλ: k atios exceed 3: 1, and B-cell proportion was (73. 2±27. 2)%. Twenty-six cases could be sub-classified by immunophenotyped. Among 16 histologically confirmed B-NHL cases, only 2 cases diagnosed with follicular lymphoma showed discrepancy with flow cytometry results. In all cases diagnosed with reactive lymphoid hyperplasia and metastasis carcinoma , no abnormal lymphocytes can be found, and k: λ or k: λ ratios were less than 3: 1. Conclusions Fine-needle aspiration analysis with flow eytometrie immunophenotyping can be helpful in diagnosis and differential diagnosis as well as sub-classification of NHL     

淋巴结细针穿刺标本的流式细胞术分析

Objective Comparative evaluation of flow cytometric immunophenotyping in the diagnosis and differentiation of lymphadenopathy,lymphoma and reactive lymphoid hyperplasia. Methods Ninty-nine fine-needle aspiration specimens from patients with tentative clinical lymphoprofierative disorders were consecutively analyzed by both cytology and flow cytometry with histology results as the gold standard. The three color antibodies including CD3,CD3,CD4,CD5,CD10,CD19,CD20,CD23,CD45,K,λ,FMC7 and CD34 were used for cell composition evaluation and cells with abnormal phenotype. Lymphoma cases were classified according to new WHO classification and subtypes were categorized by immunophenotypic analysis. The results from flow cytometry and cytology were compared. Results By cytological study, 40 of 99 cases were diagnosed with lymphoma, 29 cases were diagnosed with metastatic carcinoma, and 30 cases were diagnosed with reactive lymphoid hyperplasia, necrosis or tuberculosis. Among them, 2 non-Hodgkin lymphoma(NHL) cases were misdiagnosed as reactive lymphoid hyperplasia by cytology. Biopsy was performed in 18 cases of NHL including 16 B-NHL and 2 T-NHL By flow cytometry study, 35 of 99 eases were diagnosed with lymphoma, including 4 cases of lymphoblast lymphoma, 1 case of T-cell lymphoma, and 30 eases of other B-NHL For those 30 cases of B-NHL, 28 cases showed monoclonal light chain expression, and k: λ orλ: k atios exceed 3: 1, and B-cell proportion was (73. 2±27. 2)%. Twenty-six cases could be sub-classified by immunophenotyped. Among 16 histologically confirmed B-NHL cases, only 2 cases diagnosed with follicular lymphoma showed discrepancy with flow cytometry results. In all cases diagnosed with reactive lymphoid hyperplasia and metastasis carcinoma , no abnormal lymphocytes can be found, and k: λ or k: λ ratios were less than 3: 1. Conclusions Fine-needle aspiration analysis with flow eytometrie immunophenotyping can be helpful in diagnosis and differential diagnosis as well as sub-classification of NHL     

淋巴结细针穿刺标本的流式细胞术分析

Objective Comparative evaluation of flow cytometric immunophenotyping in the diagnosis and differentiation of lymphadenopathy,lymphoma and reactive lymphoid hyperplasia. Methods Ninty-nine fine-needle aspiration specimens from patients with tentative clinical lymphoprofierative disorders were consecutively analyzed by both cytology and flow cytometry with histology results as the gold standard. The three color antibodies including CD3,CD3,CD4,CD5,CD10,CD19,CD20,CD23,CD45,K,λ,FMC7 and CD34 were used for cell composition evaluation and cells with abnormal phenotype. Lymphoma cases were classified according to new WHO classification and subtypes were categorized by immunophenotypic analysis. The results from flow cytometry and cytology were compared. Results By cytological study, 40 of 99 cases were diagnosed with lymphoma, 29 cases were diagnosed with metastatic carcinoma, and 30 cases were diagnosed with reactive lymphoid hyperplasia, necrosis or tuberculosis. Among them, 2 non-Hodgkin lymphoma(NHL) cases were misdiagnosed as reactive lymphoid hyperplasia by cytology. Biopsy was performed in 18 cases of NHL including 16 B-NHL and 2 T-NHL By flow cytometry study, 35 of 99 eases were diagnosed with lymphoma, including 4 cases of lymphoblast lymphoma, 1 case of T-cell lymphoma, and 30 eases of other B-NHL For those 30 cases of B-NHL, 28 cases showed monoclonal light chain expression, and k: λ orλ: k atios exceed 3: 1, and B-cell proportion was (73. 2±27. 2)%. Twenty-six cases could be sub-classified by immunophenotyped. Among 16 histologically confirmed B-NHL cases, only 2 cases diagnosed with follicular lymphoma showed discrepancy with flow cytometry results. In all cases diagnosed with reactive lymphoid hyperplasia and metastasis carcinoma , no abnormal lymphocytes can be found, and k: λ or k: λ ratios were less than 3: 1. Conclusions Fine-needle aspiration analysis with flow eytometrie immunophenotyping can be helpful in diagnosis and differential diagnosis as well as sub-classification of NHL     

淋巴结细针穿刺标本的流式细胞术分析

Objective Comparative evaluation of flow cytometric immunophenotyping in the diagnosis and differentiation of lymphadenopathy,lymphoma and reactive lymphoid hyperplasia. Methods Ninty-nine fine-needle aspiration specimens from patients with tentative clinical lymphoprofierative disorders were consecutively analyzed by both cytology and flow cytometry with histology results as the gold standard. The three color antibodies including CD3,CD3,CD4,CD5,CD10,CD19,CD20,CD23,CD45,K,λ,FMC7 and CD34 were used for cell composition evaluation and cells with abnormal phenotype. Lymphoma cases were classified according to new WHO classification and subtypes were categorized by immunophenotypic analysis. The results from flow cytometry and cytology were compared. Results By cytological study, 40 of 99 cases were diagnosed with lymphoma, 29 cases were diagnosed with metastatic carcinoma, and 30 cases were diagnosed with reactive lymphoid hyperplasia, necrosis or tuberculosis. Among them, 2 non-Hodgkin lymphoma(NHL) cases were misdiagnosed as reactive lymphoid hyperplasia by cytology. Biopsy was performed in 18 cases of NHL including 16 B-NHL and 2 T-NHL By flow cytometry study, 35 of 99 eases were diagnosed with lymphoma, including 4 cases of lymphoblast lymphoma, 1 case of T-cell lymphoma, and 30 eases of other B-NHL For those 30 cases of B-NHL, 28 cases showed monoclonal light chain expression, and k: λ orλ: k atios exceed 3: 1, and B-cell proportion was (73. 2±27. 2)%. Twenty-six cases could be sub-classified by immunophenotyped. Among 16 histologically confirmed B-NHL cases, only 2 cases diagnosed with follicular lymphoma showed discrepancy with flow cytometry results. In all cases diagnosed with reactive lymphoid hyperplasia and metastasis carcinoma , no abnormal lymphocytes can be found, and k: λ or k: λ ratios were less than 3: 1. Conclusions Fine-needle aspiration analysis with flow eytometrie immunophenotyping can be helpful in diagnosis and differential diagnosis as well as sub-classification of NHL     

自动图像分析系统与快速流式细胞术在白细胞减少性疾病诊治中的价值

目的探讨自动图像分析系统与快速流式细胞术在白细胞减少性疾病诊治中的价值。方法分别采用自动图像分析系统、快速流式细胞术和显微镜镜检法对白细胞计数为(0.5~2.0)×10^9/L的181例患者进行白细胞分类计数。以显微镜镜检法为参考方法,比较上述方法白细胞分类计数的时间、精密度以及原始细胞检测相关性、敏感性与特异性。结果显微镜镜检法、快速流式细胞术、自动图像分析系统预分类和自动图像分析系统预分类+人工审核白细胞分类计数中位时间分别为864 s、277 s、190 s、364 s;快速流式细胞术中性粒细胞、淋巴细胞、单核细胞和原始细胞分类计数结果的离散度优于其他3种方法。快速流式细胞术、自动图像分析系统预分类、自动图像分析系统预分类+人工审核检测原始细胞的敏感性和特异性分别为94.90%和98.80%、54.08%和74.69%、79.59%和100.00%,与显微镜镜检法的r值分别为0.937、0.507、0.990。结论自动图像分析系统+人工审核与快速流式细胞术可快速、准确地检测出低值白细胞样本中的原始细胞,对患者疾病的诊断、治疗及预后判断具有重要价值。     

碧迪FACS CantoⅡ流式细胞仪性能评价及实验室应用

目的 评估碧迪FACS CantoⅡ(BD FACS CantoⅡ)流式细胞仪的性能及实验室应用。方法 依据中华人民共和国医药行业新版标准《YY/T0588-2017流式细胞仪》^[1]对BD FACS CantoⅡ流式细胞仪进行性能评价,评价内容包括:荧光检出限、荧光线性、前向角散射光(forward scatter resolution,FSC)检出限、仪器分辨率、FSC分辨率、侧向角散射光(side scattering resolution,SSC)分辨率、倍体分析线性、表面标志物检测的准确度、表面标志物检测的重复性、携带污染率和仪器稳定性。完成性能评价后,分别用BD FACS CantoⅡ流式细胞仪及其配套的BD六色淋巴细胞亚群试剂盒和BD FACS Calibur流式细胞仪及其配套的BD四色淋巴细胞亚群试剂盒分别检测20份全血标本,比较两台仪器在标本前处理、上机检测、分析结果所用时间和结果比较的差异。结果 该流式细胞仪对异硫氰酸荧光素(fluorescein isothiocyanate,FITC)通道荧光检出限为40.18等量可溶性荧光分子数(molecules equiva-lent soluble fluorochrome,MESF),对藻红蛋白(P-phycoerythrin,PE)通道荧光检出限为23.77 MESF,两者的决定系数(R square,r)均为0.999 9; FSC最小可检测0.22 μm微球; 仪器分辨率FSC,FITC和PE荧光通道的变异系数(coeffivirnt of cariation,CV)分别为2.3%,2.4%和2.4%; FSC/SSC散点图可明显区分外周血中红细胞和血小板,同时能区分白细胞中的淋巴细胞、中性粒细胞、单核细胞; 倍体分析线性中G₂/M期(四倍体细胞峰)与G₀/G₁期(二倍体细胞峰)的平均荧光强度比值为1.98; 表面标志物检测值的平均值均在质控品说明书给定的靶值参考范围内; 表面标志物检测重复性CV分别为CD3:2.75%,CD4:1.86%,CD8:5.14%,CD16/CD56:7.33%和CD19:11.26%; 携带污染率最大为0.05%; 该仪器开机8 h检测FSC及各荧光通道峰值荧光道数偏差值(B)分别为-0.40%,-0.55%,1.57%,1.88%,1.66%,7.44%,7.23%,6.63%和6.21%; BD FACS Canto Ⅱ流式细胞仪及其配套试剂盒较BD FACS Calibur流式细胞仪及其配套试剂盒在总体检测速度上有显著提高; 两台仪器所得的检测结果差异无统计学意义(P>0.05),且前者检测结果的离散程度小于后者。结论 BD FACS Canto Ⅱ流式细胞仪各项性能均符合行业标准,仪器各项技术指标达标,可有效保障实验室检测结果的准确性,能为临床诊疗提供可靠支持。     

A new approach for diagnosing chronic myelomonocytic leukemia using structural parameters of Sysmex XNTM analyzers in routine laboratory practice

According to WHO recommendations, diagnosis of chronic myelomonocytic leukemia (CMML) beforehand requires microscopic examination of peripheral blood to identify dysplasia and/or blasts when monocytes are greater or equal to 1.0?×?10⁹/L and 10% of leucocytes. We analyzed parameters derived from Sysmex^TM XN analyzers to improve the management of microscopic examination for monocytosis. We analyzed results of the complete blood count and the positioning and dispersion parameters of polymorphonuclear neutrophils and monocytes in 61 patients presenting with CMML and 635 control patients presenting with a reactive monocytosis. We used logistic regression and multivariate analysis to define a score for smear review. Three parameters were selected: neutrophil/monocyte ratio, structural neutrophil dispersion (Ne-WX) and monocyte absolute value. We established an equation in which the threshold of 0.160 guided microscopic examination in the search for CMML abnormalities with a sensitivity of 0.967 and a specificity of 0.978 in the learning cohort (696 samples) and 0.923 and 0.936 in the validation cohort (1809 samples) respectively. We created a score for microscopic smear examination of patients presenting with a monocytosis greater or equal to 1.0?×?10⁹/L and 10% of leucocytes, improving efficiency in laboratory routine practice.     

外周血白细胞计数与缺血性脑卒中的关系及临床意义

目的探讨外周血白细胞计数及分类计数中,白细胞计数总数、中性粒细胞及单核细胞升高与缺血性脑卒中的关系及临床意义。方法用全自动血细胞分析仪,对阜阳市人民医院神经内科住院经CT、核磁检查确诊的365例缺血性脑卒中患者外周血进行白细胞计数和分类计数,了解白细胞计教总数、中性粒细胞及单核细胞升高情况,对其升高百分率进行分析。结果结果显示：365例缺血性脑卒中患者白细胞计数总数、分类计数中,中性粒细胞、单核细胞均有不同程度升高。白细胞升高范围：10．1—27．2×10^9／L,占26．6％;中性粒细胞升高范围：70．1％-93％,占67．8％;单核细胞升高范围：8．1％-46．5％;占49．8％。缺血性脑卒中患者,外周血白细胞计数总数、中性粗细胞及单核细胞升高,男女性别无统计学意义（P〉0．05）。结论外周血白细胞计数总数、中性粒细胞和单核细胞升高疑似与缺血性脑卒中发病及引起其发痛原因的重要因素动脉粥样硬化（AS）有一定关系。     

不同流式细胞分析系统对外周血淋巴细胞亚群分析结果的影响

目的 探讨部分临床实验室FCM淋巴细胞亚群分析参考范围应用的合理性及不同生产厂家的流式细胞仪和试剂组合对淋巴细胞亚群分析结果的影响.方法 根据国内临床实验室常用的3个流式细胞仪型号(Beckman Coulter Epics XL、Beckman Coulter Cytomics FC500、BD FACS Calibur),分别选取3家北京地区临床流式细胞室(A、B、c室),按照各室的实际检测方案分别测定50份健康人静脉血标本,以验证各室淋巴细胞亚群分析参考范围是否合理.调查3家实验室室内全血质控品使用情况,并将商品化全血质控品分发各室,按照各自的实际实验方案在20个工作日内与常规标本平行处理、检测和分析.针对不同生产厂家的试剂,在同一流式细胞仪(型号为Beckman Coulter Epics XL)上用a、b、c、d 4种不同的试剂组合对20份患者标本进行检测,其中试剂组合a为美国Beckman Coulter公司同厂配套试剂和仪器,试剂组合b、c、d的检测结果分别与试剂组合a比较,计算b、c、d试剂组合偏倚>10%的概率.采用相同试剂和溶血素(美国Beckman Coulter公司)对24份患者标本进行前处理,分别在2台不同厂家和型号的流式细胞仪(型号为Beckman Coulter Epics XL和BD FACS Calibur)上检测,比较相同试剂处理标本后不同仪器对淋巴细胞亚群分析结果的影响.采用同厂配套试剂和仪器,比较Beckman Coulter Epics XL和BD FACS Calibur两个流式细胞检测系统对20份患者标本检测结果的影响.结果 A室的自然杀伤(NK)细胞及CD+4 T淋巴细胞/CD+8 T淋巴细胞(T4/T8),B、c两室的T4均有大于10%的结果落在相应的参考范围之外,超出相应参考范围的概率分别为16%(9/50)、24%(12/50)、22%(11/50)、12%(6/50).3家实验室20个工作日内的室内质控均在参考范围内.与试剂组合a比较,试剂组合b、c的所有项目偏倚均较大,其中偏倚>10%的概率最低为试剂组合b的T8,为70%(14/20);最高为试剂组合b、c的T淋巴细胞(T3)、T4,均达到100%(20/20).试剂组合d的T3、T8和B淋巴细胞(B)偏倚较大,偏倚>10%的概率分别为35%(7/20)、85%(17/20)、75%(15/20).不同生产厂家的试剂、仪器处理和分析标本的结果,与采用同一生产厂家的试剂、仪器处理和分析的结果相比,T3、T4、T8、B、NK均存在较大偏倚,偏倚>10%的概率分别为71%(17/24)、80%(19/24)、38%(9/24)、33%(8/24)、92%(22/24).Beckman Coulter Epics XL和BD FACS Calibur两个流式细胞检测系统相比较,T8、NK和B的偏倚均较大,偏倚>10%的概率分别为55%(11/20)、70%(14/20)、55%(11/20).结论 流式细胞实验室需要建立自己的参考范围并定期验证,以便合理进行调整.建议定期采用全血质控品,并累计质控数据.各实验室应选择同厂配套试剂处理标本.

Abstract：

Objective To investigate the appropriate setting up of normal reference ranges of lymphocyte subsets in some flow cytometry laboratories and to study the effects of different flow cytometers and various reagents by different manufacturers on the analysis of peripheral blood lymphocyte subsets. Methods Three FCM labs (named A, B and C) in Beijing region were selected representing 3 commonly used flow cytometers (Beckman Coulter Epics XL, Beckman Coulter Cytomics FC500, BD FACS Calibur). 50 samples from healthy donors were distributed to 3 labs and tested according to individual lab's standard operating procedure to verify whether the normal reference ranges of peripheral blood lymphocyte subsets established were appropriate. The application of internal quality control was also investigated. Commercial blood quality control reagents were given to the 3 FCM labs and tested within 20 working days paralleled with routine samples. In addition, 20 patients' samples were prepared using 4 different combinations of reagents ( a , b , c and d). The results from combination a, which used the Beckman Coulter reagents and instrument, were compared to the results from combination b, c and d, which used reagents from different manufacturers. Then the prepared samples were tested on Beckman Coulter Epics XL to evaluate the effects of different combinations of reagents on the results of peripheral blood lymphocyte subsets analyzed by the same instrument. Furthermore, 24 patients' samples prepared by same reagents from Beckman Coulter company were tested on both Beckman Coulter Epics XL and BD FACS Calibur respectively to assess the effects of different instruments on peripheral blood lymphocyte subsets. 20 patients' samples prepared by same reagents and instruments were analyzed by Beckman Coulter Epics XL analytic system and BD FACS Calibur analytic system respectively to assess the effects of the two analytic systems on the lymphocyte subsets. Results Over 10% of the results for NK and T4/T8 in lab A as well as T4 in labs B and C fell outside of their normal reference ranges. The probabilities exceeding corresponding normal reference ranges were 16% ( 9/50 ), 24% ( 12/50 ), 22% (11/50) and 12% ( 6/50 ), respectively. The results using internal blood quality control in 3 FCM labs within 20 working days were all within the reference ranges of the quality control provided by the kit. The biases from b and c reagent combinations were substantial compared with that of reagent a combination. Among the biases from b and c reagent combinations, the lowest probability of bias exceeding 10% was T8 of combination b, which had probability of 70% (14/20). The highest probabilities of hias exceeding 10% were T3 and T4 of b and c reagent combinations, which reached 100% (20/20) . Furthermore, the biases of T3, T8 and B of d reagent combination compared with that of reagent a combination were also substantial. The probabilities of bias exceeding 10% were 35% (7/20) ,85% (17/20) and 75% (15/20), respectively. Comparing the results of samples prepared and analyzed by reagents and instruments from different manufacturers to that of samples prepared and analyzed by the same company's reagents and instruments showed that there were great discrepancies in T3, T4 , T8 , B and NK. The probabilities of bias exceeding 10% were 71% ( 17/24), 80% (19/24) ,38% (9/24), 33% (8/24) and 92% (22/24), respectively. The biases of T8, NK and B were substantial when compared the results from Beckman Coulter Epics XL analytic systems and BD FACS Calibur analytic systems. The probabilities of bias exceeding 10% were 55% (11/20 ), 70% ( 14/20 ) and 55% (11/20), respectively. Conclusions FCM labs should set up their own normal reference range for peripheral blood lymphocyte subsets. The normal reference range should be verified periodically. It is important to apply internal blood quality control regularly and accumulate the quality control results. The reagents and instrument for preparing peripheral blood samples should be from the same manufacturers.     

Use of white cell counts to select units of whole blood for granulocyte preparation

Multiple variables that are easily determined, including donor white cell count, were studied for possible value in selecting single units of whole blood for isolation of granulocytes. Whole blood units selected on the basis of total white cell count were shown to have a 78 percent greater granulocyte content than randomly selected units (3.0 X 10(9) granulocytes/unit vs. 1.7 X 10(9) granulocytes/unit, p less than .001). White cell counts determined on 5-hour-old segments of whole blood were demonstrated to have a high coefficient of correlation with white cell counts determined on freshly drawn EDTA specimens (r = 0.918) and fresh segments of whole blood (r = 0.926). We conclude that yields of granulocytes from single units of whole blood stored for up to 5 hours at room temperature can be increased by selecting units with high total white cell counts performed on blood unit segments.     

Fluctuations in the peripheral blood leukocyte and platelet counts in leukocytapheresis in healthy volunteers.

Leukocytapheresis (LCP) for the treatment of patients with diseases that involve an abnormal autoimmune reaction aims to improve the condition of the patient's pathology and to correct imbalances in immunological regulation mechanisms by removing the responsible leukocytes from the peripheral blood. To clarify the mechanism of therapeutic effect, LCP was conducted in healthy volunteers to investigate changes in peripheral blood leukocyte and platelet counts over time during the treatment. The subjects were 10 healthy male volunteers. LCP was performed once in each volunteer for 3,000 ml of blood volume. The peripheral blood counts decreased significantly, reaching a minimum of 20.0% of the baseline number of leukocytes, 10.1% of the baseline number of neutrophils, and 40.3% of the baseline number of lymphocytes. The number of removed leukocytes was about 6.6 x 10(9) cells, including about 3.5 x 10(9) neutrophils, as well as about 5.0 x 10(11) platelets. After the completion of LCP, the peripheral leukocyte levels increased transiently (overshoot), and at 2 h after the completion of the treatment, they reached 193.4% of the baseline value. Since LCP is capable of reducing the peripheral blood leukocyte count over a short period of time, its impact on peripheral blood is great. In addition, in view of the overshoot phenomenon and the appearance of immature granulocytes, the LCP may affect not only the peripheral blood, but also the bone marrow pool, the marginal pool, and the leukocytes present in the tissues.     

365例COVID-19患者血常规分析

目的探讨新型冠状病毒肺炎(COVID-19)患者外周血细胞的变化规律,为治疗和防范提供指导意义。方法对365例COVID-19患者在住院当天、住院3~7 d、住院14~21 d的白细胞、淋巴细胞等指标分别检测,对3个不同时间的检测结果进行比较,观察COVID-19患者随病程进展血细胞的动态改变。结果365例COVID-19患者在住院3~7 d时白细胞计数最低,均值为4.78×10^9/L,中性粒细胞百分比均值为67.77%,与住院当天和住院14~21 d比较,差异均有统计学意义(P<0.05),与正常对照比较,差异也均有统计学意义(P<0.01);COVID-19患者住院3~7 d的淋巴细胞计数均值为1.07×10^9/L,百分比均值为22.75%,与住院当天和住院14~21 d比较,差异均有统计学意义(P<0.05),与正常对照比较,差异也均有统计学意义(P<0.01)。结论365例COVID-19患者在住院3~7 d白细胞计数最低,而淋巴细胞计数的降低更为明显。经过综合治疗14~21 d后,白细胞和淋巴细胞计数较住院3~7 d及住院当天均有上升,但仍未恢复至正常水平。     

Leukocyte CD11b and CD62l expression in response to interstitial inflammation in CAPD patients.

OBJECTIVE: Very little is known about the kinetics of leukocyte recruitment and the modulation of adhesion molecules on leukocytes in the interstitium at the site of inflammation outside the peritoneal cavity in patients on peritoneal dialysis. These issues were addressed in the present study. PATIENTS AND METHODS:Two skin blisters were raised in 10 patients on peritoneal dialysis and in 19 healthy subjects. After 12 hours, blister exudates were collected and the blisters were thereafter challenged with buffer or autologous serum in order to establish an intermediate and an intense cutaneous inflammation. Leukocyte count, leukocyte CD11b/CD62L expression, monocyte chemotactic protein-1 (MCP-1), and interleukin-8 (IL-8) were determined in blood and at the three sites of interstitial inflammation by immunostaining, flow cytometry, and ELISA. RESULTS: In monocytes and granulocytes, expression of CD11b increased and CD62L decreased significantly during the transmigration process from the peripheral blood into the three sites of interstitial inflammation. In the nonstimulated blister, expression of CD11b on both monocytes and granulocytes was similar in patients and healthy subjects. At the site of intermediate inflammation, expression of CD11b on both monocytes and granulocytes was significantly higher in healthy subjects compared to patients (p < 0.05 and p < 0.001 respectively). At the site of intense inflammation, expression of CD11b on granulocytes was significantly lower (p < 0.001), and CD62L significantly higher (p < 0.001) in patients. Interstitial concentrations of MCP-1 and IL-8 at the sites of intermediate inflammation were significantly higher in healthy subjects compared to patients (p < 0.05 and p < 0.05 respectively). However, at the site of intense inflammation, similar concentrations of MCP-1 and IL-8 were observed. Furthermore, there were no significant correlations between concentrations of MCP-1 and IL-8 in blister exudates and expression of CD11b on monocytes and granulocytes at the sites of interstitial inflammation. CONCLUSION:The ability of monocytes and granulocytes to modulate the expression of adhesion molecule in response to interstitial inflammation was significantly impaired in patients on peritoneal dialysis. Furthermore, these data suggest that the expression of CD11b on leukocytes is not dependent on concentrations of IL-8 and MCP-1 in interstitium in this patient group.     

3种方法检测非离心尿标本红细胞结果比较

目的评价H-800尿干化学分析仪、UF-100全自动尿液流式细胞仪及显微镜镜检对非离心尿液红细胞检测结果的一致性。方法收集436例住院患者晨尿,分别用H-800尿干化学分析仪、UF-100尿有形成分分析仪和显微镜检测非离心尿液中的红细胞。结果尿液红细胞检测以显微镜检查为标准,UF-100尿液分析仪检测尿液红细胞阳性率(44%)高于镜检阳性率(36%),二者阳性符合率为85%,阳性率比较差异有统计学意义(P<0.05);H-800尿干化学分析仪检测尿液红细胞阳性率(37%)高于镜检阳性率(36%),二者阳性符合率为94%,阳性率比较差异无统计学意义(P>0.05)。结论 3种方法检测非离心尿红细胞结果一致性较好,直接采用非离心尿进行镜检具有较高临床价值。