34例急性白血病免疫表型与疗效关系

为提高急性白血病 (AL )疗效和生存期 ,探讨AL免疫表型与疗效关系 ,对 34例AL进行了免疫表型检测 ;采用单克隆抗体 (McAb )和流式细胞仪 (FCM )检测 ;在急性非淋巴细胞白血病中所检测的各种抗原的阳性表达率依次为CD33>CD13>CD11b >CD14,干 /祖细胞分化抗原CD34的表达率为 2 8% ,M3 不表达CD34和HLA DR。CD34+的完全缓解 (CR )率明显低于阴性组 ;免疫表型的检测和研究将有助于指导临床治疗及判断预后。     

Lasting Changes to Circulating Leukocytes in People with Mild SARS-CoV-2 Infections

Survivors of severe SARS-CoV-2 infections frequently suffer from a range of post-infection sequelae. Whether survivors of mild or asymptomatic infections can expect any long-term health consequences is not yet known. Herein we investigated lasting changes to soluble inflammatory factors and cellular immune phenotype and function in individuals who had recovered from mild SARS-CoV-2 infections (n = 22), compared to those that had recovered from other mild respiratory infections (n = 11). Individuals who had experienced mild SARS-CoV-2 infections had elevated levels of C-reactive protein 1–3 months after symptom onset, and changes in phenotype and function of circulating T-cells that were not apparent in individuals 6–9 months post-symptom onset. Markers of monocyte activation, and expression of adherence and chemokine receptors indicative of altered migratory capacity, were also higher at 1–3 months post-infection in individuals who had mild SARS-CoV-2, but these were no longer elevated by 6–9 months post-infection. Perhaps most surprisingly, significantly more T-cells could be activated by polyclonal stimulation in individuals who had recently experienced a mild SARS-CoV-2, infection compared to individuals with other recent respiratory infections. These data are indicative of prolonged immune activation and systemic inflammation that persists for at least three months after mild or asymptomatic SARS-CoV-2 infections.     

肾嫌色细胞癌和嗜酸细胞腺瘤的形态学、组织化学和免疫表型的比较研究

目的探讨肾嫌色细胞癌（ehromophobe renal cell carcinoma,CRCC）和嗜酸细胞腺瘤（oncocytoma）的临床病理学特征、诊断和鉴别诊断。方法对手术切除的13例肾嫌色细胞癌和6例肾嗜酸细胞腺瘤进行眼观、光镜和电镜观察,Hale胶体铁和免疫组化染色。结果嫌色细胞癌以实体结构为主,胞质半透明或嗜酸颗粒状,核皱缩,有核周空晕;其中6例（46％）为嫌色细胞癌嗜酸变型;电镜下见胞质内微泡和管泡状嵴线粒体;Hale胶体铁染色12／13阳性。嗜酸细胞腺瘤以巢状结构为主,胞质嗜酸颗粒状,核圆伴小核仁;1例（16．7％）出现核异型性;电镜下见胞质内层状嵴线粒体;Hale胶体铁染色阴性。免疫组化两者均表达E—cadhefin、EMA,不表达CD10、CK20、vimentin;CK7在10／13例嫌色细胞癌中呈强阳性表达,2／6例嗜酸细胞腺瘤呈灶性表达。结论肾嫌色细胞癌和嗜酸细胞腺瘤形态学各有特征,免疫表型相似,鉴别诊断基于生长方式和细胞学特征,Hale胶体铁染色和电镜检查是区分二者的有效手段。     

人牙髓干细胞培养及其细胞表型的分析研究

目的 :分离培养来源于人体牙髓组织的干细胞并对其细胞表型进行分析。方法 :采用胶原酶消化法获得人牙髓组织的单细胞悬液 ,14d后挑取细胞克隆传代培养 ,随机选取 2株细胞克隆扩大培养 ,以骨髓间充质干细胞为参照 ,利用免疫组化方法通过与外胚间充质干细胞的比较对其表型进行分析。结果 :人的牙髓干细胞呈集落状生长 ,有细胞克隆形成 ,细胞表达多种细胞表面标志。结论 :人牙髓组织中存在有呈克隆样生长的成体干细胞 ,细胞表型呈现多样性。     

Thymoma mimicking lymphoblastic lymphoma: A pitfall in fine-needle aspiration biopsy interpretation

Lymphocyte-rich thymoma often contains lymphoblasts, and lymphoblastic lymphoma often infiltrates the thymus gland. Although these two neoplasms are clinically distinct in most cases, their cytologic features may be similar on biopsy. We describe a fine-needle aspiration biopsy of a thymoma in a 50-yr-old man to increase awareness of this pitfall in cytologic interpretation. Diagn Cytopathol 1996;14:165–171. © 1996 Wiley-Liss, Inc.     

手足口病患儿血清淋巴细胞免疫分型的水平变化及临床意义

目的探讨手足口病患儿中血清淋巴细胞免疫分型水平变化,为诊断及治疗手足口病提供临床诊治意义遥方法选取四 川省宜宾市第一人民医院2013 年3 月~2015年3 月儿科手足口患儿150 例（分为重症组54 例,轻症组96 例）及行儿科保健健 康儿童105 例曰采用流式细胞仪进行血清淋巴细胞免疫分型的水平检测,并行组间比较遥结果重症患儿血清淋巴细胞免疫分 型水平较轻型低,轻型较健康儿童水平低,差异有统计学意义（约0.05）遥结论手足口病患儿免疫功能较正常健康儿童呈降低 趋势,其中重症患儿免疫功能更低,分析血清淋巴免疫细胞分型水平可作为手足口病患儿判断疾病病情变化及临床治疗观察的 一种方法遥     

阻塞性睡眠呼吸暂停低通气综合征对患者外周血淋巴细胞免疫表型及C反应蛋白的影响

目的:通过分析阻塞性睡眠呼吸暂停低通气综合征(OSAHS)患者外周血淋巴细胞免疫表型及C反应蛋白(CRP),探讨OSAHS对机体免疫功能及炎症反应的影响。方法:根据多导睡眠图检测结果,将60例OSAHS患者分为轻度OSAHS组20例,中度OSAHS组22例,重度OSAHS组18例,选取排除OSAHS诊断的健康体检者40名作为对照组。比较受试者的年龄、睡眠状况及睡眠中末梢血氧,抽取空腹血两份,分别采用流式细胞仪行淋巴细胞免疫表型分析,检查血CRP值。结果:OSAHS组最低血氧、平均血氧均较对照组明显下降,且在OSAHS严重程度间差异均有统计学意义(P<0.01)。OSAHS组患者外周血CD3+、CD4+/CD3+及CD4+/CD8+比值均较对照组下降(P<0.05~P<0.01),在OSAHS严重程度间差异均有统计学意义(P<0.01);OSAHS组CD8+/CD3+较对照组升高(P<0.05~P<0.01);OSAHS组CD16+CD56+较对照组升高(P<0.05);CD19+与对照组差异无统计学意义(P>0.05);重度OSAHS组外周血CRP均较对照组和轻度OSAHS组升高(P<0.01和P<0.05)。结论:OSAHS导致机体免疫功能下降,同时伴有炎症反应增强,并且与OSAHS严重程度有一定关系。     

Regulatory Τ‐cell Differentiation Between Maternal and Cord Blood Samples in Pregnancies with Spontaneous Vaginal Delivery and with Elective Cesarian Section

Citation Bili H, Fleva A, Pados G, Argyriou T, Tsolakidis D, Pavlitou A, Tarlatzis BC. Regulatory T‐cell differentiation between maternal and cord blood samples in pregnancies with spontaneous vaginal delivery and with elective cesarian section. Am J Reprod Immunol 2011; 65: 173–179 Problem The immunological mechanisms preventing fetal antigenic rejection during normal pregnancy and the extent to which the type of delivery influences lymphocyte reactions are elusive. Method of study Maternal peripheral blood and neonatal umbilical cord blood (CB) was collected upon labor after vaginal delivery or cesarian section. Leukocytes were analyzed with flow cytometry, focusing on regulatory and γ/δ T‐cells. Results In CB from neonates delivered by vaginal delivery, natural killer cells were increased. On the other hand, in maternal blood, γ/δ T‐cells were increased, and activated T‐cells (cluster of differentiation [CD]4+/25^dim/122+ cells) were decreased. Moreover, maternal blood presented increased levels of T regulatory cell subsets like CD4+/25^high/45RO+, CD4+/25^high/DR+, CD4+/25^high/CD38+ and CD4+/25^high/71+. In CB, CD19+, CD4+/25^high/45RA+ and CD4+/25^high/122+ cells were increased. Conclusion The effect of delivery type on lymphocyte immunophenotype was minimal. Mothers’ and neonates’ lymphocyte subsets differed significantly. Mothers’ phenotype comprised significantly of lymphocytes involved in tolerance (memory and activated regulatory T‐cells, γ/δ T‐cells).     

原发性中枢神经系统弥漫大B细胞性淋巴瘤16例临床病理分析

目的 探讨原发性中枢神经系统弥漫大B细胞淋巴瘤(diffuse large B-cell lymphomas,DLBCL)的临床病理特点和免疫分子亚型及与预后的相关性.方法 回顾性分析16例原发性中枢神经系统DLBCL的临床表现、影像特点,采用HE染色及EliVision法观察其病理组织学特点和免疫表型特征.结果 临床上主要表现为颅内压增高、肢体乏力、视力障碍和神经精神症状,可为单发或多发性病灶;影像学上,CT示肿块多呈稍低密度阴影,MRI示T1WI呈低或等信号,T2WI呈高或等信号,强化明显,病灶周围常见明显水肿带.组织学特点为瘤细胞细胞形态较单一,弥漫浸润,瘤细胞常围绕血管形成袖套状,伴片状坏死及出血.免疫分子分型示9例DLBCL为生发中心型,7例为非生发中心型.结论 原发性中枢神经系统DLBCL是高度侵袭性淋巴瘤,为2008年WHO淋巴造血系统肿瘤分类已新增加的DLBCL亚型,具有较独特的临床病理学特点及生物学行为.好发中老年人,临床表现和影像学缺乏特异性.病理组织形态特点为瘤细胞弥漫或结节分布,以瘤细胞常围绕血管袖套状浸润为其特征性结构,可有坏死、出血;分子亚型主要为生发中心型.