多发性硬化患者外周血淋巴细胞CD56的表达

目的 探讨CD56^ 淋巴细胞在多发性硬化（MS）的变化。方法 流式细胞仪测定32例复发缓解型MS患者（复发发期23例,缓解期9例）及13例复发期MS患者予糖皮质激素治疗后外周血淋巴细胞CD56表达的阳性百分率。结果 复发期和缓解期MS患者CD56的表达均高于对照组,15例复发期MS患者CD56的阳性百分率与血脑屏障受损呈正相关,复发期MS患者CD56的水平与距发作时间、整个病程、EDSS伤残评分无关。缓解期MS CD56的水平与病程无关,激素对CD56的表达我影响。结论 CD56^ 淋巴细胞涉及MS的发病机制。     

青霉素过敏病人外周血淋巴细胞IL-4、IFN-γmRNA的表达

目的 :研究青霉素类过敏反应和细胞因子IL 4、IFN γ的关系。方法 :采用半定量逆转录聚合酶链反应 (RT PCR)检测 1 4例青霉素G(PG)过敏病人 (速发型、迟发型过敏病人 7例 )和 1 1例对照者外周血淋巴细胞经青霉素G刺激后IL 4、IFN γmRNA的表达。结果 :速发型青霉素过敏反应组有 4例 ,迟发型青霉素过敏反应组、正常对照组各有 1例外周血淋巴细胞中IL 4mRNA有表达 ;速发型过敏反应组有 6例 ,迟发型过敏反应组有 2例 ,正常对照组有 1例淋巴细胞内有IFN γmRNA表达。速发型过敏反应组IFN γ表达明显高于迟发型过敏反应组、正常对…     

慢性乙型肝炎患者外周血淋巴细胞Fas和FasL的表达及临床意义

Ｆａｓ和ＦａｓＬ是介导细胞凋亡的主要系统 ,我们应用逆转录 ＰＣＲ方法 ,对 37例慢性乙型肝炎患者外周血淋巴细胞Ｆａｓ和ＦａｓＬ的表达进行检测 ,初步探讨其在慢性乙型肝炎患者活化诱导的外周血淋巴细胞凋亡中的作用。对象与方法病例来源 :我院 1998～ 1999年 37例慢性乙型肝炎患者 ,男 2 6例 ,女 11例 ,年龄 16～ 6 0岁。诊断按1995年全国传染病与寄生虫病学术会议修订的病毒性肝炎标准〔1〕。活动期 :ＡＬＴ >10 0Ｕ/Ｌ ,乙肝标志物 :ＨＢｓＡｇ、ＨＢｅＡｇ、ＨＢｃＡｂ阳性 ,ＨＢＶＤＮＡ阳性。排除ＨＡＶ、ＨＣＶ、ＨＤＶ、ＨＥＶ…     

习惯性流产患者外周血淋巴细胞凋亡及临床意义

目的：检测习惯性流产患者免疫功能并探讨外周血淋巴细胞凋亡过程。方法：T淋巴细胞亚群采用间接免疫荧光法,免疫球蛋白采用免疫比浊法,细胞凋亡用吖啶橙－溴化乙锭染色法。结果：该组患者免疫功能低下,外周血淋巴细胞凋亡（PCD）率明显升高。结论;外周血淋巴细胞凋亡过度是该组患者免疫功能低下的一个重要原因。     

生长激素分泌过多患者外周血淋巴细胞CD2mRNA的表达

应用ＲＮＡ斑点杂交法，测定了１２例生长激素（ＧＨ）分泌过多患者及１０例正常人外周血淋巴细胞ＣＤ２ｍＲＮＡ的表达，发现患者ＣＤ２ｍＲＮＡ的表达较之正常人有显著下降，提示ＧＨ分泌过多对Ｔ淋巴细胞ＣＤ２ｍＲＮＡ的表达有显著影响。此结果为研究内分泌系统产生的肽类激素对免疫系统的影响提供了新资料。     

哮喘患者外周血淋巴细胞ICAM—1,β2整合素及CD44分子的表达

哮喘患者外周血淋巴细胞ＩＣＡＭ１、β２整合素及ＣＤ４４分子的表达张劭夫刘树芬张波（济南军区总医院呼吸科，济南２５００３１）中国图书分类号Ｒ５６２２５作者简介：张劭夫，男，４４岁，医学硕士，副主任医师，主要研究哮喘气道炎症目前认为哮喘本质上系慢性气...     

TRAIL及TRAIL受体在慢性乙型肝炎患者外周血淋巴细胞的表达

目的　探讨TRAIL(TNF relatedapoptosis inducingligand)及TRAIL受体 (TRAIL R)mRNA在慢性乙型肝炎患者外周血淋巴细胞 (peripheralbloodlymphocytes,PBL)中的表达。方法　分离 2 0例正常人、2 4例慢性乙型肝炎患者及 2 4例慢性重型乙型肝炎患者之PBL ,体外单独或与植物血凝素(PHA)共同培养 4 8h ,荧光素吖啶橙和溴乙啶染色PBL ,观察其凋亡细胞比例 ,采用逆转录 聚合酶链反应 (RT PCR)方法检测TRAIL、TRAIL RmRNA在PBL中的表达。结果　与正常对照组相比 ,活化诱导的淋巴细胞凋亡在慢性乙型肝炎患者明显增高 ,而在慢性重型肝炎患者则降低 ,差异有显著性 (P<0 .0 1)。PHA活化前 ,TRAILmRNA在上述 3组研究对象外周血淋巴细胞均不表达 ;PHA活化后 ,其表达明显上调 ,且慢性乙型肝炎组高于正常对照组 ,慢性重症肝炎组低于正常对照组 ,差异有显著性(P <0 .0 1)。 4个TRAIL R的mRNA在 3组研究对象外周血淋巴细胞均有表达 ,两两比较差异无显著性 (P >0 .0 5 )。经PHA活化后 ,TRAIL R2mRNA表达明显上调 (P <0 .0 1) ,TRAIL R3mRNA表达完全消失 ,TRAIL R1与 R4的mRNA表达无明显改变 (P >0 .0 5 )。结论　慢性乙型肝炎患者外周血淋巴细胞存在凋亡紊乱现象 ,TRAIL参与了乙型肝炎患者外周血淋巴细胞活化诱导细胞死亡 (     

慢性乙型肝炎患者外周血T淋巴细胞表面共刺激分子的表达变化及临床意义

目的 探讨T淋巴细胞表面共刺激分子在慢性乙型肝炎(CHB)患者外周血中的表达及其临床意义.方法 选取我院在2013年3月至2014年3月期间收治的126例CHB患者和90例健康对照者作为研究对象,利用流式细胞术和定量PCR检测CHB患者和健康对照者外周血中T淋巴细胞表面共刺激分子CD28、细胞毒性T淋巴细胞抗原(CTLA)-4、程序性死亡分子(PD)-1、T细胞免疫球蛋白粘蛋白分子(Tim)-3及T淋巴细胞亚群的表达变化,并进行比较分析.结果 CHB患者外周血CD3+、CD4+T细胞百分率及CD4+/CD8+比值均低于对照组,而CD8+T细胞百分率高于对照组,组间比较差异具有统计学意义(分别t=4.0868,7.4660,5.5207和3.8160,均P＜0.01);同时,HBV DNV阳性组患者外周血CD3+、CD4+T细胞百分率及CD4+/CD8+比值均低于HBV DNA阴性组,而CD8+T细胞百分率高于HBV DNA阴性组,组间比较差异具有统计学意义(分别t=5.1567,2.7884,2.9987和2.9087,均P＜0.01);此外,CHB患者外周血共刺激分子CD28+及CTLA-4+的表达量均低于正常对照组,而PD-1和Tim-3的表达量高于对照组,差异具有统计学意义(分别t=6.0546,5.0669和6.3006,8.2151,均P＜0.01);同时,HBV DNA阳性高拷贝组患者外周血共刺激分子CD28及CTLA-4的表达量均低于低拷贝组,而PD-1和Tim-3的表达量高于低拷贝组,组间比较差异具有统计学意义(分别t=3.1293,2.7459,2.8661,2.7960,均P＜0.01).结论 外周血T淋巴细胞亚群及其表面共刺激分子的表达水平对于指导CHB患者的临床治疗和判断预后具有一定的临床意义.     

带状疱疹患者外周血T淋巴细胞亚群分析

带状疱疹患者外周血Ｔ淋巴细胞亚群分析李大宁，余红上海第二医科大学附属新华医院皮肤科上海２０００９２带状疤疹是一种由水痘一带状疱疹病毒（ＶＺＶ）感染引起的疾病，机体对ＶＺＶ的特异性免疫目前认为主要是细胞免疫。本文采用流式细胞仪（ＦＣＭ）技术测定带状疤疹...     

Molecular genetic analysis of lymphoid tumors arising after organ transplantation.

A variety of gene analyses were performed on lymphoid tumors from transplant patients who received cyclosporine A for immunosuppression. Epstein-Barr virus DNA was detected in the tumors, and the structure of circular episomal virus DNA was used as a measure of cell clonality. This analysis was correlated with clonality determined by study of immunoglobulin gene rearrangement. Some of the tumors had DNA rearrangements near the c-myc gene. Analysis suggested the pathogenesis of the tumors and indicated four categories of lymphoproliferation, three neoplastic and one reactive.     

器官移植术后外周血巨细胞病毒及其抗原和DNA的检测

目的　探讨及时诊断器官移植受者术后活动性巨细胞病毒（ 简称ＣＭＶ） 感染。方法　采集３２ 例器官移植受者术后８９ 份血标本,同时用酶免疫组织化学作抗原血症和病毒分离培养作病毒血症的检测。再以原位杂交（ＩＳＨ） 和聚合酶链反应（ＰＣＲ） 作ＤＮＡ 血症的检测。结果　８９ 份血标本中,抗原血症阳性３５ 份（３９－３％ ）,病毒血症阳性２５ 份（２８－１ ％） ,ＤＮＡ 血症的位杂交检测阳性３７ 份（４１－６ ％） 及ＤＮＡ血症ＰＣＲ 检测阳性５１ 份（５７－３％ ）。结论　ＤＮＡ血症原位杂交和ＰＣＲ 技术及抗原血症的检测方法,具有检测率高且时间早的优点,能作为临床快速检测ＣＭＶ的方法。本结果与移植受者的临床症状相关,可作为监视器官移植受者术后ＣＭＶ感染和指导抗病毒治疗的依据     

The fate of human peripheral blood lymphocytes after transplantation into SCID mice

Human peripheral blood lymphocytes (hu-PBL) can be adoptively transferred by intraperitoneal injection into mice with severe combined immunodeficiency (SCID). The transplanted lymphocytes can produce immunoglobulin (Ig), respond to antigens, and survive for months in this chimeric model (hu-PBL SCED). However, whether the lymphocytes actually repopulate and reconstitute lymphoid structures and organs has been subject of some debate. To address this question and to characterize the hu-PBL SCID model better, we employed a novel technique for the identification of human cells in xenogeneic mice. We used fluorescence in situ hybridization (FISH) with a biotinylated DNA probe to all human centromeres. We demonstrated that FISH could be used to detect human cells when they accounted for less than 1 % of human/mouse cell mixtures; it could also be employed for the identification and localization of individual human cells in tissue sections. By using FISH, we studied 31 SCID mice injected with 1.5 × 10⁷ ?4 × 10⁷ hu-PBL via intravenous (i.v.) or intraperitoneal (i.p.) routes. In the 6 i.v -injected mice, we found that the human cells were removed from the circulation into the lung within 1 h. In 22 of 25 i.p -injected animals, 90–3716 μg/ml of human IgG was found in the sera at 3 to 13 weeks after transplantation (a.t.). Human cells colonized the peritoneal cavity and persisted for up to 13 weeks a.t. and, in the 12 mice studied, accounted for 4 % to 57 % of the cells in the peritoneal fluid. However, only rare, isolated human cells were found in the spleen, blood, bone marrow, lung or Peyer's patches. In 7 of 19 mice that received hu-PBL i.p. from Epstein-Barr virus-seropositive donors, we found masses of human cells usually beneath the peritoneal lining but sometimes infiltrating normal tissue. We conclude that FISH offers a simple means for accurate identification of human cells in the xenogeneic mouse. Although there is colonization of the peritoneal cavity in most mice, and development of lymphoid masses in some, there is no reconstitution of lymphoid structures and only minimal engraftment of lymphoid organs by human cells in conventionally-prepared hu-PBL SCID constructs.     

BAFF分子在部分肾移植受者外周血淋巴细胞异常高表达及其可能的生物学意义

目的：分析BAFF分子在肾移植受者外周血淋巴细胞的表达情况以及初步分析其异常表达的生物学意义。方法：以来院随访的肾移植受者为研究对象,采集患者外周血,以EDTA-Na2抗凝。采用单色和多色标记的免疫荧光分析法,分析BAFF分子在外周血淋巴细胞的表达情况,同时检测淋巴细胞CD3、CD4、CD8、CD134、CD25和CD127的表达。结果：共分析了86位肾移植受者。BAFF分子在受者外周血淋巴细胞的表达率分别介于0.18%至76.97%之间。以15%为界将所有数据分成两组（表达率〉15%组和表达率〈15%组）,对所获得的数据进行统计分析。在BAFF分子表达率〉15%组其BAFF分子表达的平均值为36.91%;BAFF^＋细胞群的增加与外周血CD4^＋/CD8^＋比值、与循环中CD4^＋CD25^＋CD127^-/low T细胞群等没有显著相关性;但是与循环中CD134^＋ T细胞群和CD4^＋CD134^＋ T细胞群的增加存在显著相关性（P〈0.01和P〈0.05）,具有统计学意义。而BAFF表达率〈15%组所检测的相关指标均没有统计学意义。结论：BAFF分子在部分肾移植受者外周血淋巴细胞的异常高表达可能与移植排斥反应相关。     

Filtering lymphocytes may decrease the need for immunosuppression in solid organ transplantation

Organ transplantation has become very important for patients with irreversible organ diseases. The transplanted organ is foreign to the host and, therefore, it induces a complex immune response of the patient. Therefore, Immunosuppressive agents are usually required to suppress both specific and nonspecific immunity and prevent allograft rejection in recipients who undergo organ transplantation. Of the late years, newer immunosuppressive agents with non-overlapping toxicities have been used in combinations in order to provide better patient and graft survival. However, these medications are associated with significant adverse effects that impact quality of life and sometimes long-term survival of the patient. Adverse effects can differ between the immunosuppressants, but many result from the overall state of immunosuppression. Strategies to manage immunosuppressant adverse effects often involve minimizing exposure to the drugs while balancing the risk for rejection. However, to prevent rejection of the transplanted organ, there may be unproven approaches other than immunosuppressive drugs. Filtering lymphocytes by a specific filter with respect to their size can be an alternative way. Our hypothesis was concerning of if such a filter could manage this and take the place of these drugs.     

Enhanced expression of L-selectin on peripheral blood lymphocytes from patients with IgA nephropathy

To investigate the homing characteristics of T and B lymphocytes which could explain the abnormal partition of IgA-producing cells in tonsils and bone marrow from patients with IgA nephropathy (IgAN), the expression of leucocyte adhesion molecules (CD11a, CD29, CD49d, CD62L, CD31) was assessed using flow cytometry on peripheral blood leucocytes from patients with biopsy-proven IgAN and controls. Higher proportions of T and B lymphocytes expressing higher amounts of L-selectin, as well as higher proportions of B cells expressing more CD31 were evidenced in IgAN patients. Conversely, serum levels of sCD62L were not different from controls, but significantly higher than serum levels in patients suffering from other renal diseases. We hypothesize that this over-expression of CD62L and CD31 may be involved in an enhanced efficiency of lymphoid cells homing to lymphoid tissues in this disease.