尿毒症患者透析前后外周血B细胞和T细胞及其亚群的研究

应用单克隆抗体技术检测了３５名正常人和３１例尿毒症患者外周血Ｂ细胞和Ｔ细胞亚群。结果显示：尿毒症患者外周血Ｂ细胞数显著地高于正常人（Ｐ〈０．００１）,ＣＤ３、ＣＤ４低于正常人（Ｐ〈０．０１）,ＣＤ４／ＣＤ８又非常显著地低于正常人（Ｐ〈０．００１）。因此认为,尿毒症患者为一种自身免疫调节异常的疾病。     

脐血T淋巴细胞亚群的研究

本文用３Ｈ—ＴｄＲ和ＡＰＡＡＰ法研究了脐血淋巴细胞转化功能（ＬＴ）、脐血血清的特性、混合淋巴细胞反应（ＭＬＣ）及Ｔ细胞亚群，结果表明脐血淋巴细胞对丝裂原的反应与正常成人外周血淋巴细胞无明显差异；脐血血清对ＰＨＡ和ＣｏｎＡ诱导的淋巴细胞转化有抑制作用；脐血之间、脐血与成人外周血之间的ＭＬＣ反应均较成人外周血之间的ＭＬＣ反应弱，且有显著性差异（Ｐ＜０．０５）。脐血细胞表型尚未成熟，脐血ＣＤ３＋细胞数减低，ＣＤ４＋和ＣＤ８＋细胞数及其比率近似于成人，细胞数之和大于ＣＤ３＋细胞数。     

复发性口腔溃疡与甲状腺激素水平关系

本文用放射免疫分析法对７０例各病期的复发性口腔溃疡（ＲＯＵ）患者和６０例正常人血清甲状腺激素含量进行了检测和分析，结果如下：（１）ＲＯＵ患者各期的血清ＦＴ４和ＦＴ３含量均低于正常人（Ｐ〈０．０５，Ｐ〈０．０１），溃疡期含量低，较初发期显著降低（Ｐ〈０．０１）；愈全期，间歇期较溃疡期逐渐回升（Ｐ〈０．０５，Ｐ〈０．０１），但间歇期含量仍低于初发期（Ｐ〈０．０１和Ｐ〈０．０５）；（２）ＲＯＵ患者初发期     

原发性肝癌患者手术治疗前后检测可溶性白细胞介素2受体和肿瘤坏？…

应用双抗体酶联夹心法和放射免疫分析法检测了３０名正常人和３３例原发性肝癌患者血清中ｓＩＬ－２Ｒ和ＴＮＦ含量，结果表明：原发性肝癌患者手术前ｓＩＬ－２Ｒ，ＴＮＦ非常显著地高于正常人（Ｐ〈０．００１，Ｐ〈０．０１）；术后２周，血清ｓＩｌ－２Ｒ与正常人比较有差异（Ｐ〈０．０１），而ＴＮＦ则无差异（Ｐ〉０．０５），ＡＦＰ含量高低与ｓＩｌ－２和ＴＮＦ含量无关（ｒ＝０．３８２６，０．３７２５；Ｐ〉０．０５）。     

哮喘患者支气管肺泡灌洗液中细胞分类及其T细胞亚群的改变

目的和方法：采用间接免疫荧光法和支气管肺泡灌洗液（ｂｒｏｎｃｈｉａｌａｌｖｅｏｌａｒｌａｖａｇｅｆｌｕｉｄ，ＢＡＬＦ）技术观察１２例过敏性哮喘患者和２３例健康人外周血和ＢＡＬＦ中的Ｔ淋巴细胞亚群变化：结果：与健康对照组比较，过敏性哮喘患者外周血的Ｔ淋巴细胞亚群无明显改变，但其ＢＡＬＦ中的ＣＤ４＋细胞显著增高（５４．９７±４１４）％ｖｓ（７９．７１±９．６３）％，Ｐ＜００５；ＣＤ４＋与ＣＤ８＋细胞的比值也显著增高（１６４±０．３２ｖｓ２．３２±０．８３，Ｐ＜００５）。此外，过敏性哮喘患者ＢＡＬＦ中肥大细胞和嗜酸细胞百分比（００９±０．０４）％和（３６２±１．０６）％明显高于健康对照组（００２±０．０１）％和（０．３９±０．３０）％，Ｐ＜００５和Ｐ＜００１。结论：ＣＤ４＋细胞在哮喘的气道炎症中发挥重要作用。     

食管癌患者五项细胞免疫学指标的测定及其意义

对３５例食管癌（ＥＣ）患者和３０例正常人（ＮＣ）的外周血自然杀伤（ＮＫ）细胞活性、Ｔ细胞亚群、血浆可溶性白细胞介素２受体（ｓＩＬ－２Ｒ）、肿瘤坏死因子α（ＴＮＦ－α）以及外周血诱生γ干扰素（ＩＦＮ－γ）的水平进行了检测。结果显示，ＥＣ患者ＮＫ细胞活性明显降低（Ｐ＜０．０１）；ＣＤ８＋细胞增多（Ｐ＜０．０６），ＣＤ４＋／ＣＤ８＋细胞比值降低（Ｐ＜０．０５）；ｓＩＬ－２Ｒ明显增高（Ｐ＜０．０１）；外周血诱生ＩＦＮ－γ降低（Ｐ＜０．０５）；血浆ＴＮＦ－α升高。表明，上述指标对判断、分析ＥＣ患者细胞免疫功能状况及病变程度有较大的意义。     

流行性出血热患者红细胞变形性的研究：附124例临床分析

观察１２４例流性出血热（ＥＨＦ）患者治疗前红细胞变形能力（ＲＣＤ）明显低于对照组（Ｐ〈０．０１）；治疗前明显低于治疗后（Ｐ〈０．０１）。ＲＣＤ于发热期开始下降，休克期及少尿期下降更显著（Ｐ〈０．０１）。进入多尿期开始上升，至恢复期已基本转为正常（Ｐ〉０．０５）。病情越重，ＲＣＤ下降越显著（Ｐ〈０．０１）。治愈者完全恢复正常，无效者未见明显改善。本病ＲＣＤ下降与ＥＨＦ病毒所致全身性微血管损伤有关。在     

胎儿胸腺细胞悬液腹腔移植防治内源性哮喘临床及免疫学…

报告用胎儿胸腺细胞悬液移植注射防治内源性哮喘患儿３４例，结果：治愈６７．６５％显效２６．４７％，有效２．９４％，与胸腺素组（治愈６０％，显效２２．８６％，有效１１．４３％）比较无显著性差异（Ｐ〉０．０５），与常规治疗组（治愈０％，显效２５％，有效４０．６３％）比较总有效率和治愈率均有非常显著性差异（Ｐ〈０．０１）。患儿ＣＤ３，ＣＤ８明显低于正常对照组（Ｐ〈０．０１），ＣＤ４经微升高（但Ｐ〉０．０５     

脑囊虫病患者外周血单个核细胞体外诱生IL—2,IFN—γ及 …

本文采用生物活性测定法检测了３１例脑囊虫病患者外周血单个核细胞（ＰＢＭＣ）体外诱生ＩＬ－２、ＩＦＮ－γ及ＴＮＦ－α活性，以３０例正常人作对照，探讨了脑囊虫病人在子的变化及在免疫调节中的作用。结果显示：脑囊虫病患者ＰＢＭＣ体外诱生的ＩＬ－２、ＩＦＮ－γ水平明显降低。与正常人相比差异显著（Ｐ〈０．０５，Ｐ〈０．０１），而患者ＰＢＭＣ体外诱生的ＴＮＦ－α水平明显高于正常对照组（Ｐ〈０．０１）；提示脑囊虫     

肺癌患者血清免疫抑制酸性蛋白及T细胞亚群联合检测的意义

本文对４４例肺癌术前患者血清免疫抑制酸性蛋白（ＩＡＰ）含量及外周血Ｔ淋巴细胞亚群进行了检测,与正常组比较。结果表明：肺癌患者血清ＩＡＰ含量显著增高（Ｐ＜００１）,Ｔ亚群ＣＤ３＋,ＣＤ４＋细胞均显著降低（Ｐ＜００１）,ＣＤ８＋细胞显著增高（Ｐ＜００５）,ＣＤ４＋／ＣＤ８＋细胞比值亦显著降低（Ｐ＜００１）;并发现患者血清ＩＡＰ含量的增高与其外周血Ｔ细胞亚群ＣＤ４＋／ＣＤ８＋细胞比值的降低呈明显负相关（ｒ＝ ０４２;Ｐ＜００１）。在患者中有肺外转移者血清ＩＡＰ含量明显高于未转移者（Ｐ＜００１）;其Ｔ细胞ＣＤ４＋／ＣＤ８＋比值亦明显低于未转移者（Ｐ＜００１）。提出联合检测对患者免疫水平评估和预后的判断更具有一定的意义。     

Homing-associated cell adhesion molecules and cell cycle status on the nucleated cells in the bone marrow, mobilized peripheral blood and cord blood

Homing-associated cell adhesion molecules (H-CAM) on the CD34+ cells play an important role for the engraftment process following hematopoietic stem cell transplantation (HSCT). However, it seems that not only CD34+ cells but also other nucleated cells (NCs) with H-CAM could be implicated in the engraftment process and the proliferation of hematopoietic stem cells. We investigated the differences of HCAM and cell cycle status on the NCs in cord blood (CB), bone marrow (BM), and mobilized peripheral blood (PB). The proportions of CXCR4+ cells within the NC populations were greater in CB than in PB or BM (p=0.0493), although the proportions of CXCR4+, CD44+, and CD49d+ cells within the CB CD34+ cell populations were same within BM or PB. A lower proportion of CD34+CD49d+ cells within the CD34+ cell populations was more noted in CB than in PB or BM (p=0.0085). There were no differences in cell cycle status between CB and BM or PB. Our results suggest that the migrating potential of CB would be enhanced with increased CXCR4 expression on the NCs, but the adhesion potential of CB CD34+ cells would be less than that of PB and BM. These findings may help explain why the lower cell dose is required and engraftment is delayed in cord blood stem cell transplantation.     

Comparison of CD34+ subsets and clonogenicity in human bone marrow, granulocyte colony-stimulating factor-mobilized peripheral blood, and cord blood

To compare the clonogenicity and distribution of CD34+ subsets in bone marrow (BM), granulocyte colony-stimulating factor (G-CSF) mobilized peripheral blood (PB) and cord blood (CB), we analyzed in vitro colony formation and CD34+ cells co-expressing differentiation molecules (CD38, HLA-DR), myeloid associated molecules (CD13, CD33), a T-cell associated molecule (CD3), and a B-cell associated molecule (CD19) from mononuclear cells (MNCs) in the three compartments. The proportions of CD34+CD38- cells (BM: 4.4+/-2.8%, PB: 5.3+/-2.1%, CB: 5.9+/-3.9%) and CD34+HLA-DR cells (BM: 4.7+/-3.4%, PB: 5.5+/-2.3%, CB: 6.1+/-3.7%) did not differ significantly among the compartments. In contrast, a significantly higher proportion of CD34 cells of PB and CB co-expressed CD13 (75.0+/-11.4%, 77.7+/-17.3%) and CD33 (67.1 +/-5.7%, 56.8+/-10.3%) compared with those of BM (43.0+/-6.3%, 27.6+/-5.1%) and a significantly higher number of granulocyte-macrophage colony-forming units (CFU-GM) and erythroid burst-forming units (BFU-E) were detected in MNCs derived from PB and CB compared with those from BM (p<0.01). The proportion of CD34+CD19+ cells was higher in BM (34.9+/-11.9%) than those in PB (5.6+/-3.0%) and CB (4.7=2.1%) (p<0.05). The proportion of CD34+CD3+ was comparable in all three compartments. In conclusion, our findings show that MNCs of mobilized PB and CB display similar phenotypic profiles of CD34+ subsets and clonogenicity, different from those of BM.     

Rhodamine 123 efflux in human subpopulations of hematopoietic stem cells: comparison between bone marrow, umbilical cord blood and mobilized peripheral blood CD34+ cells

Hematopoietic stem cells (HSC) can be identified by the expression of the CD34 molecule. CD34+ cells are found in bone marrow (BM), umbilical cord blood (UCB) and in mobilized peripheral blood (PB). CD34+ cells express P-glycoprotein (Pgp), a product of the multidrug resistance (MDR) gene. Pgp activity can be measured by the efflux of the dye Rhodamine 123 (Rho 123) and can be blocked by verapamil. Transport activity in HSC suggests that Pgp could have a functional role in stem cell differentiation. This study compared the number of CD34+ cells with Pgp activity measured by efflux of Rho 123 in the hematopoietic population obtained from different sources. Samples were analysed for their content of CD34+ cells, and BM had a significantly higher amount of CD34+ cells compared to UCB, mobilized PB and normal PB. When the frequency of Rholow cells was studied among the CD34+ population, an enrichment of cells with Pgp activity was observed. The frequency in BM was significantly lower than that in UCB and mobilized PB. The low retention of Rho 123 could be modified by verapamil, indicating that the measurements reflected dye efflux due to Pgp activity. Although UCB and mobilized PB had a lower number of CD34+ cells compared to BM, the total number of CD34+ cells with Pgp activity was similar in the three tissues. The different profiles may indicate the existence of subpopulations of stem cells or different stages of cellular differentiation detected by the extrusion of the dye Rho 123.     

发作期哮喘患者外周血T细胞亚群、B细胞和NK细胞的变化及临床意义

目的：探讨发作期哮喘患者外周血T细胞亚群、B细胞和NK细胞变化及临床意义。方法：采用直接免疫荧光法,用流式细胞术检测30例发作期哮喘患者和30例正常人对照的T细胞亚群、B细胞和NK细胞的变化。结果：与正常对照组比较,发作期哮喘患者CD4^＋T细胞、CD19^＋B细胞和CD4^＋／CD8^＋比值显著增高（P〈0．01）,CD8^＋T细胞显著下降（P〈0．01）和CD56^＋CD16^＋NK细胞下降（P〈0．05）。CD3^＋T细胞无明显变化。结论：发作期哮喘患者的免疫功能紊乱在哮喘发病中起着重要作用。     

Cell cycle-dependent change of the adhesive character of CD34+ progenitor cells and their VLA-4 expression]

We identified the cell cycle status of CD34+ cells of steady-state bone marrow (BM) and peripheral blood (PB) obtained from healthy volunteers, and those of BM and apheresis PB samples collected from donors who had been administered granulocyte colony-stimulating factor (G-CSF). Regardless of whether G-CSF treatment was undergone, more than 10% of CD34+ cells in the BM was in the S + G2/M phase. In contrast, less than 2% of CD34+ cells in the PB was cycling. After co-culturing BM CD34+ cells with a monolayer of the stromal cell line MS-5 for 1 hour, some cells adhered to the stroma. The percentage of cells in the S + G2/M phase among these adherent cells was higher than that among the non-adherent cells. Flow cytometric analysis revealed that CD34+ cells in mobilized PB expressed less VLA-4 than those in BM and that in in vitro-cultured non-adherent cells exhibited a lower level of VLA-4 expression than adherent cells. In addition, CD34+ cells in the G0/G1 phase expressed lower levels of VLA-4 than those in the S + G2/M phase. These findings suggested that the reduced expression of adhesion molecules such as VLA-4 by the progenitor cells in the G0/G1 phase of the cell cycle result in the release of progenitor cells from the hematopoietic microenvironment to peripheral blood.     

Comparative analysis of the morphological, cytochemical, immunophenotypical, and functional characteristics of normal human peripheral blood lineage(-)/CD16(+)/HLA-DR(+)/CD14(-/lo) cells, CD14(+) monocytes, and CD16(-) dendritic cells

Human peripheral blood (PB) CD14(lo)/HLA-DR(+) cells were initially described as a subset of mature monocytes. Recently, it has been suggested that these represent a part of a new subset of dendritic cells (DC), characterized by the coexpression of MDC-8/HLA-DR/CD16. The aim of the present paper was to analyze the morphological, cytochemical, phenotypical, and functional characteristics of PB CD16(+)/HLA-DR(+) cells compared to both PB CD14(+) monocytes and CD16(-) DC. In contrast to CD14(+) monocytes, purified CD16(+)/HLA-DR(+) cells displayed cytoplasmic veils and lacked cytoplasmic myeloperoxidase and alpha-naphthyl acetate esterase. Normal human PB CD16(+)/HLA-DR(+) cells also displayed phenotypic characteristics different from those of CD14(+) monocytes: they lacked the CD64 Fcgamma receptor, showed lower levels of CD32, and expressed higher amounts of CD16 compared to CD14(+) monocytes. They also displayed a different pattern of expression of other antigens, including CD14, HLA-DR, CD45RA, CD45RO, complement receptors and complement regulatory surface proteins, adhesion and costimulatory molecules, and cytokine receptors, among others. When compared to CD16(-) DC, CD16(+)/HLA-DR(+) cells showed reactivity for CD16, dim positivity for CD14, higher expression of both Ig- and complement-receptors and lower reactivity for HLA-DR, adhesion, and costimulatory molecules (with the exception of CD86). The CD16(+)/HLA-DR(+) cell subset displayed a higher Ig/complement-mediated phagocytic/oxidative activity than CD16(-) DC, although this activity was significantly lower than that of mature monocytes. Regarding cytokine production at the single cell level, LPS plus IFN-gamma-stimulated PB CD16(+)/HLA-DR(+) cells produced significant amounts of IL1beta, IL6, IL12, TNFalpha, and IL8; however, the percentage of cytokine-producing cells and the amount of cytokine/cell were lower in CD16(+)/HLA-DR(+) cells than in CD14(+) monocytes. In addition, upon comparing CD16(+)/HLA-DR(+) cells with CD33(+++)/CD16(-) DC, we found that the percentage of cytokine-producing cells and the amount of cytokine/cell were significantly different in both cell subsets. In summary, our results show that CD16(+)/HLA-DR(+) cells clearly display different morphologic, cytochemical, immunophenotypical, and functional characteristics compared to both mature monocytes and CD16(-) DC. Interestingly, these cells are more frequent than other DC in normal human adult PB and cord blood samples, while they are less represented in normal bone marrow.     

佛波醇酯加离子霉素诱导脐血和成人外周血CD4+CD25+ T细胞分泌IL-2的相关机制研究

目的：以佛波醇酯加离子霉素作为刺激剂,验证CD4+CD25+ 调节性T细胞本身并不存在分泌IL-2障碍；同时通过对脐血和成人外周 血的比较性研究，了解脐血CD4+CD25+ T细胞的成熟度。方法：以au toMACS从足月婴儿脐血（CB）和成人外周血（PB）分选CD4+CD25+和CD4+CD25-T细 胞，以PDB+ionomycin作为刺激剂，培养45 h后流式细胞术检测各组细胞表达CD69和CD25水 平，并以Luminex多重细胞因子检测技术检测培养上清中7种细胞因子的浓度。结果:经PDB+ionomycin刺激后，CB、PB的CD4+CD25+ 和CD4+CD25- T细胞均 发生增殖，但在培养 45 h 后CD4+CD25+ T细胞均出现细胞状态变差或死亡倾向。C B、PB 的CD4+CD25+ T细胞活化后CD25分子表达进一步上调，高于CD25-细胞活化后的CD25分 子密度。经PDB+ionomycin刺激后，PB CD4+CD25+和CD4+CD25- T细胞均分泌高水平 的IFN-γ、IL-2和TNF-α，但CD25+ 细胞分泌IL-5、IL-4和IL-10水平远远高于CD25-细 胞；CB CD4+CD25+和CD4+CD25- T细胞亦分泌高水平的IL-2和TNF-α，但IFN-γ水 平远远低于PB，基本不分泌IL-5、IL-4和IL-10。结论：CD4+CD25+ T细胞本身并不存在合成和分泌IL-2障碍，其可能具有与传统T细胞不同的T细胞受体信息转 导模式；脐血CD4+CD25+ T细胞功能尚未完全成熟。     

The use of fluorodeoxyuridine synchronization for cytogenetic investigation of acute lymphoblastic leukemia.

The role of fluorodeoxyuridine (FUdR) synchronization in cytogenetic analysis of acute lymphoblastic leukemia (ALL) was investigated using samples of bone marrow (BM) (10 patients) and peripheral blood (PB) (2 patients), prepared for chromosome analysis using both 24-hour unstimulated cultures (24-hr) and cultures synchronized with FUdR. The mitotic index (MI) in FUdR was lower than in 24-hr in 8 of 10 BM and 2 of 2 PB cultures. The quality of the metaphases was the same in both cultures. The FUdR had a lower percentage of abnormal cells than the 24-hr in the 7 BM samples with a normal/abnormal population and sufficient analyzable cells in each culture for comparison (p less than 0.05). PB FUdR cultures yielded only normal cells. We conclude that FUdR cultures are inferior to 24-hr cultures for chromosome analysis in ALL.