重型乙型肝炎血清可溶性白细胞介素2受体及外周血T淋巴细胞亚群的相关性

对２１例重型乙型肝炎患者白细胞介素２受体（ｓＩＬ－２Ｒ）及Ｔ淋巴细胞亚群检测发现，急性及亚急性重型、慢性重型肝炎患者的ｓＩＬ－２Ｒ均显著增高，与正常对照比较，Ｐ＜０００１。急性、亚急性重型及慢性重型乙型肝炎患者的ＣＤ＋４明显降低，ＣＤ＋８则显著升高，与对照组比较，Ｐ均＜００１。检测证实ｓＩＬ－２Ｒ增高与活化的ＣＤ＋８具有相关性，表明活化的ＣＤ＋８细胞主要是细胞毒性Ｔ细胞（ＣＴＬ），其在急性和亚急性重型肝炎发病中可能起重要作用。ＣＤ＋４、ＣＤ＋８细胞在急性和慢性重型乙肝中表达的不同，提示二者发病机制不同。     

外周血CD3^＋CD56^＋T细胞在恶性肿瘤患者中的表现及临床意义

目的 了解ＣＤ３＾＋ＣＤ５６＾＋Ｔ细胞与ＣＤ３＾－ＣＤ５６＾＋、ＣＤ３＾＋ＣＤ５６＾－的关系及其在参与恶性肿瘤患者抗肿瘤免疫中的作用。方法 采用流式细胞术对１００例恶性肿瘤患者（５５例实体瘤患者和４５例非实体瘤患者）及４６例健康对照组外周血中的ＣＤ３＾＋ＣＤ５６＾＋、ＣＤ３＾－ＣＤ５６＾＋、ＣＤ３＾＋ＣＤ５６＾－３类淋巴细胞进行标记分析。结果 在实体瘤和非实体瘤患者组中：ＣＤ３＾＋ＣＤ５６＾＋Ｔ细胞均有高表达,２组患者与健康对照组比较均有显著性差异（Ｐ〈０．０１）。ＣＤ３＾＋ＣＤ５６＾－Ｔ细胞在实体瘤组的表达都显著低于非实体瘤组和健康对照组,２组间比较均有显著性差异（Ｐ〈０．００１）;而ＣＤ３＾－ＣＤ５６＾＋ＮＫ细胞在２患者组中的表达与健康对照组比较均无显著性差异（Ｐ〉０．０５）。结论 ＣＤ３＾＋ＣＤ５６＾＋Ｔ     

慢性肝病患者外周血淋巴细胞亚群的变化

本文采用流式细胞仪对５１例慢性肝病患者外周血淋巴细胞亚群进行了测定。结果发现慢性活动性肝为（ＣＡＨ）、慢性迁延性肝炎（ＣＰＨ）和肝炎后肝硬化（ＨＣ）患者与正常对照相比，ＮＫ数量明显增加（Ｐ〈０．０１），Ｄ４＾＋和ＣＤ３＾＋数量均明显降低（Ｐ〈０．０１），ＣＡＨ的ＣＤ８＾＋数量明显增加（Ｐ〈０．０１），且ＣＤ４＾＋／ＣＤ８＾＋比值明显下降（Ｐ〈０．０１），ＨＣ的ＣＤ４＾＋／ＣＤ８＾＋比值下降（Ｐ〈０     

病毒性肝炎患者血清IL—6和T细胞亚中的关系

采用ＭＴＴ比色法和抗体致敏的红细胞花环试验（间接法）检测了９１例病毒性肝炎患者血清ＩＬ－６和Ｔ细胞亚群。结果显示，病毒性肝炎患者血清ＩＬ－６活性均明显高于正常对照组（Ｐ〈０．０１）；以重型肝炎为最高；且与肝细胞损害程度呈正比（Ｐ〈０．０１）；ＣＤ４＾＋细胞、ＣＤ４＾＋／ＣＤ８＾＋均明显降低，与血清ＩＬ－６呈负相关；ＣＤ８＾＋细胞明显增高，与血清ＩＬ－６呈正相关（Ｐ〈０．０１）。表明，血清ＩＬ－６与     

不同胃病患者外周血T淋巴细胞亚群的测定结果

应用流式细胞仪（ＦＣＭ）检测外周血Ｔ淋巴细胞亚群ＣＤ３＾＋，ＣＤ４＾＋、ＣＤ８＾＋及ＣＤ４＾＋／ＣＤ８＾＋比值。健康人（志愿献血者）２０例，消化性溃疡３０例，萎缩性胃炎３０例，慢性浅表性胃炎３０例。结果表明：消化性溃疡、萎缩性胃炎患者Ｔ淋巴细胞亚群ＣＤ３＾＋、ＣＤ４＾＋均值明显低于健康人（Ｐ〈０．０１）。消化性溃疡患者ＣＤ＾８＋明显高于健康人（Ｐ〈０．０５），浅表性胃炎患者与健康人比Ｔ细胞亚群无明     

急性脑梗塞患者血浆内皮素与血小板内钙含量和聚集关系的探讨

本文用放射免疫分析测定了１６例急性脑梗塞病人的血浆内皮素，用比浊法测定了血小板聚集，用Ｆｕｒａ－２／ＡＭ荧光技术测定了血小板内游离Ｃａ＾２＋含量。急性脑梗塞病人血浆内皮素明显升高（Ｐ〈０．０１），血小板聚集率增设增高（Ｐ〈０．０１），血小板内Ｃａ２＾＋含量增高（Ｐ〈０．０１），且观察到ＡＤＰ诱导的血小板聚集与血小板内Ｃａ＾２＋含量之间呈正相关（ｒ＝０．７８，Ｐ〈０．０１），而血浆内皮素与血小反聚集     

绞股蓝总皂甙抗大鼠海马结构缺血再灌注损伤的实验研究

探讨大鼠海马结构缺轿再灌注损伤机理及绞股蓝总皂甙抗缺血再灌注损伤的作用，结果：ＩＲ组海马组织中ＭＤＡ含量高于组（Ｐ〈０．０１），而ＳＯＤ含量低于ＳＯＣ组（Ｐ〈０．０１），差异非常显著：ＩＲ＋ＧＰ组海马组织中ＭＤＡ含量明显低于ＩＲ组（Ｐ〈０．０１），而ＳＯＣ含量明显高于ＩＲ组（Ｐ〈０．０１），ＩＲ组海马组织Ｎａ＾＋－Ｋ＾＋－ＡＴＰａｓｅ，Ｃａ＾２＋－ＡＴＰａｓｅ的活性明显低于ＳＯＣ组（Ｐ〈０．０１）     

癫痫患者免疫状态的探讨

本文观察了７０例癫痫（ＥＰ）患者的免疫状态，首次检测了Ｂ淋巴细胞亚群，ｓＩＬ－２Ｒ及ＴＮＦ，对各项免疫学指标进行了对比研究，发现ＩｇＡ，ＩｇＭ含量明显降低，ＣＩＣ含量明显增高（Ｐ＜０．０１），Ｃ３明显降低（Ｐ＜０．０５），显示患者体液免疫功能低下；淋巴细胞亚群测定发现ＣＤ３＾＋，ＣＤ４＾＋明显降低，ＣＤ８＾＋明显增高，ＣＤ４＾＋／ＣＤ８＾＋比值明显低于对照组（Ｐ＜０．０１），表明细胞免疫功能低下；     

重型乙型肝炎患者外周血中IL—2的初步研究

以放射免疫分析法、微量细胞培养法检测３１例重型乙型肝炎患进自清和用ＰＨＡ－Ｐ、ｒＩＬ－２刺激外周血ＰＢＭＣ的培养上清中ＩＬ－２、ｓＩＬ－２Ｒ含量，以间接免疫荧光法检测培养后ＰＢＭＣ中Ｔａｃ＋细胞数，结果，重型乙型肝炎患者血清、培养上清中ｓＩＬ－２Ｒ含量和Ｔａｃ＋细胞数显著高于慢性活动型肝炎、急性黄疸疸型肝炎及献血员对照组，而血清、上清中ＩＬ－２含但与急性肝炎接近，但显著高于慢性活动性肝炎患者（Ｐ＜     

九代清源口服液增强反复呼吸道感染患儿免疫功能的临床实验研究

目的：探讨九代清源口服液在增强反复呼吸道感染患儿免疫功能中的作用。方法：将１００例ＲＲＩ患儿随机分为２组,即常规治疗组和九代清源口服液辅助治疗组（简称九代组）,分别于治疗前、治疗后抽取静脉血检测Ｔ淋巴细胞亚群（ＳＰ法）、ＮＫ细胞活性（ＭＴＴ法）、ｓＩＬ－２Ｒ（ＥＬＩＳＡ法）、ＩｇＧ、ＩｇＡ、ＩｇＭ（透比浊法）。结果：ＲＢＩ患儿治疗前ＣＤ３＾＋、ＣＤ４＾＋、ＣＤ４＾＋／ＣＤ８＾＋、ＮＫ细胞活性及ＩｇＧ、ＩｇＡ显著降低,ＣＤ８＾＋、ＩｇＭ和ｓＩＬ－６Ｒ显著升高常规治疗指标明显好转,与正常对照组比较,仍有显著差异（Ｐ〈０．０５）;九代组治疗后有所恢复,但与正常对照组比较均无显著性差异（Ｐ〉０．０５）。结论：九代清源口服液具有较强的免疫调节作用,可明显增强ＲＲＩ患儿的细胞和体液免疫功能。     

CD4 T lymphocyte activation in acute severe asthma.

The expression of activation molecules on peripheral-blood CD4 and CD8 T lymphocytes and the serum concentrations of two products of activated T lymphocytes [interferon-gamma (IFN-gamma) and soluble interleukin-2 receptor (sIL-2R)] were measured in patients with acute severe asthma (ASA) and controls. Significantly higher percentages of CD4+ cells from patients with ASA expressed IL-2R, HLA-DR and VLA-1 as compared to controls (p less than 0.01). In contrast, CD8+ cells from both asthmatics and controls did not express IL-2R and VLA-1, and their expression of HLA-DR in asthmatics was not increased. Serum concentrations of IFN-gamma and sIL-2R were significantly elevated in patients with ASA as compared to control groups (p less than 0.01). Concentrations decreased as the patients improved clinically following therapy. Significant correlations were observed between the improvements in airways obstruction and (1) the decreases in the percentages of peripheral-blood IL-2R+ T lymphocytes and (2) the decreases in serum concentrations of sIL-2R. These observations suggest that CD4 T lymphocyte activation is important in the pathogenesis of ASA.     

全身性红斑狼疮患者T淋巴细胞亚群和sIL-2R变化的观察

观察全身性红斑狼疮（SLE）患者的TI林巴细胞亚群,NK细胞及可溶性白介素2受体（sIL-2R)的变化。以了解患者细胞免疫门节紊乱的发病机制。采用流式细胞术对60例活动性SLE患者和30名对照组进行CD3 ,CD4 ,CD8 ,NK,CD4 /CD45Ra等细胞表面标志的检测;采用ELISA法检测,sIL-2R,结果表明,SLE患者外周血中CD8＋细胞增加,而细胞CD4＋,CD4＋／CD45Ra 细胞和NK细胞均减少,CD3＋细胞无明显变化,sIL-2R水平明显增高,本文的结果提示,活动性SLE患者发病与细胞免疫调节紊乱有关。     

反复呼吸道感染儿sIL－2R和T细胞亚群的测定

本文采用双抗体夹心ＥＬＩＳＡ法分别测定了２１例反复呼吸道感染儿，３０例正常儿童，１０例新生儿脐血的血清可溶性白细胞介素２受体（ｓＩＬ＝２Ｒ）水平。结果患儿组ｓＩＬ－２Ｒ为７１６．６０±３０．１０Ｕ／ｍｌ；正常儿童组为３８４．４７±８８．０３Ｕ／ｍｌ（ｐ＜０．０１）；新生儿脐血为４４６．２０±５５．６８Ｕ／ｍｌ，与正常儿童比较Ｐ＞０．０５。同时采用间接免疫荧光技术测定了患儿Ｔ细胞亚群水平，结果ＣＤ８细胞数升高，ＣＤ３细胞和ＣＤ４细胞数、ＣＤ４／ＣＤ８比值下降，与正常儿童比较有显著性差别。提示反复呼吸道感染儿有细胞免疫功能降低及免疫调节紊乱。     

反复呼吸道感染儿sIL－2R和T细胞亚群的测定

本文采用双抗体夹心ＥＬＩＳＡ法分别测定了２１例反复呼吸道感染儿，３０例正常儿童，１０例新生儿脐血的血清可溶性白细胞介素２受体（ｓＩＬ＝２Ｒ）水平。结果患儿组ｓＩＬ－２Ｒ为７１６．６０±３０．１０Ｕ／ｍｌ；正常儿童组为３８４．４７±８８．０３Ｕ／ｍｌ（ｐ＜０．０１）；新生儿脐血为４４６．２０±５５．６８Ｕ／ｍｌ，与正常儿童比较Ｐ＞０．０５。同时采用间接免疫荧光技术测定了患儿Ｔ细胞亚群水平，结果ＣＤ８细胞数升高，ＣＤ３细胞和ＣＤ４细胞数、ＣＤ４／ＣＤ８比值下降，与正常儿童比较有显著性差别。提示反复呼吸道感染儿有细胞免疫功能降低及免疫调节紊乱。     

Soluble and cellular markers of immune activation in patients with systemic sclerosis

The peripheral blood lymphocyte pattern, the lymphocyte responses in vitro, as well as the soluble markers of immune activation were studied in 24 patients with systemic sclerosis (SSc patients). The proportions of total T cells (CD3), their CD4 subset, as well as B lymphocytes were within the normal range. The relative proportion of CD8 lymphocytes, however, was significantly reduced. Patients with SSc had a slightly lower percentage of CD4/4B4+ cells, whereas their proportion of CD4/2H4+ cells was elevated as compared to healthy controls. The proportion of lymphocytes expressing the interleukin-2 receptor (IL-2R) was significantly higher in SSc patients. The proliferative responses of peripheral blood mononuclear cells to PHA stimulation were reduced in the patient group, while expression of IL-2R on lymphocytes after such in vitro stimulation was comparable to that of controls. Expression of IL-2R on patient but not control lymphocytes was increased after in vitro exposure to laminin. Such exposure failed to induce IL-2 production or cell proliferative responses. Soluble plasma IL-2R level (sIL-2R) and soluble CD8 (sCD8) molecule levels in SSc patients were significantly elevated. These results indicate the presence of an ongoing lymphocyte activation in this disease process.     

CD4+/CD8+ ratio of liver-derived lymphocytes is related to viraemia and not to hepatitis C virus genotypes in chronic hepatitis C.

The pathogenic mechanisms that lead to chronic hepatitis C are unknown. As hepatitis C virus (HCV) has been shown to induce T cell response, we assessed whether a particular T lymphocyte subset could be preferentially detected in the liver of patients with chronic hepatitis C in relation to viraemia or HCV genotypes. The immunophenotypes of liver-derived lymphocytes were analysed in 26 patients by flow cytometry and immunohistochemistry. Viraemia was quantified by branched DNA assay. Using this assay, HCV RNA was not detectable in six patients. HCV RNA was detected in 20 patients, and titres ranged from 8 to 137 x 10(6) Eq/ml. Genotyping was performed using a line probe assay. Type 1a, 1b, 2a, 3a and 4a were found to infect 2, 10, 2, 7 and 3 patients, respectively. The CD4+/CD8+ ratio of liver-derived lymphocytes was significantly higher (P < 0.01) in patients with detectable viraemia than in patients without detectable viraemia. In contrast, neither the percentage of gamma/delta T lymphocytes nor that of CD2+CD57+ cells was different in the groups. When comparing the CD4+/CD8+ ratio, the percentage of gamma/delta T lymphocytes or CD2+CD57+ cells according to genotype, the differences were not significant. These results suggest that the CD4+/CD8+ ratio of liver-derived lymphocytes is related to viraemia but not to HCV genotypes in patients with chronic hepatitis C, and that T lymphocytes may be involved in the pathogenesis of liver lesions in chronic hepatitis C.     

Immunoregulatory CD4+ CD45R+ suppressor/inducer T lymphocyte subsets and impaired cell-mediated immunity in patients with Down''s syndrome.

The monoclonal antibodies 2H4 and 4B4 allow CD4+ and CD8+ T lymphocytes to be subdivided into CD45R+ and CDW29+ functional subpopulations. The CD4+ CD45R+ lymphocytes are designated as suppressor/inducer and CD4+ CDW29+ as helper/inducer subsets. Peripheral blood lymphocytes from 19 patients with Down's syndrome and 19 age- and sex-matched normal controls were analysed for the CD45R+ and CDW29+ subsets from the CD4+ and CD8+ T lymphocytes. The percentage of CD4+ CD45R+ cells (suppressor inducer) was markedly increased and of CD4+ CDW29+ cells (helper/inducer) decreased in all patients with Down's syndrome. In contract, the percentage of CD8+ CD45R+ and CD8+ CDW29+ subsets showed no major differences between patients with Down's syndrome and normal controls. Moreover, an alteration in the CD4+ and CD45R+ and CD4+ CDW29+ T cell subsets was accompanied by a markedly reduced proliferative response to phytohaemagglutinin and concanavalin A stimulation of the CD4+ T lymphocytes. Thus, a deficiency exists in patients with Down's syndrome in the CD4+ CDW29+ helper/inducer T cell subset which may contribute to their impaired cell-mediated immunity.     

呼吸道合胞病毒下呼吸道感染对机体细胞免疫的影响

为研究呼吸道合胞病毒（ＲＳＶ）急性下呼吸道感染（ＡＬＲＩ）的细胞免疫变化，对２５例病儿外周血白细胞介素２（ＩＬ－２）和可溶性白细胞介素２受体（ｓＩＬ－２Ｒ）水平、Ｔ细胞白细胞介素２受体（ＩＬ－２Ｒ）表达率和Ｔ细胞亚群百分率进行检测。结果显示，急性期病儿外周血ＩＬ－２水平明显低于恢复期和正常对照组，Ｔ细胞ＩＬ－２Ｒ表达率亦明显降低，而ｓＩＬ－２Ｒ水平却显著增高。急性期病儿ＩＬ－２水平与Ｔ细胞ＩＬ－２Ｒ表达率和ＣＤ＋４细胞百分率呈正相关，与ｓＩＬ－２Ｒ水平和ＣＤ＋８细胞百分率呈负相关；ｓＩＬ－２Ｒ水平与Ｔ细胞ＩＬ－２Ｒ表达率呈负相关，与临床严重程度呈正相关。上述各项免疫指标异常均提示ＲＳＶ感染时机体存在细胞免疫功能紊乱。     

Gammadelta T cells and interleukin-6 levels could provide information regarding the progression of human renal allograft

We have determined the percentage of alphabeta and gammadelta T cells by flow cytometry as well as serum interleukin-6 (IL-6) and soluble interleukin-6 receptor (sIL-6R) levels by enzyme-linked immunosorbent assay in kidney allograft recipients with acute, chronic or stable graft evolution. The percentage of CD4 and CD8 T cells in transplanted patients was lower than in the control group (P < 0.001) with the exception of CD8 gammadelta T cells from patients with stable evolution (P > 0.05). The serum levels of IL-6 and sIL-6R in acute and chronic rejection were higher than in the controls (P < 0.05). No differences in IL-6 levels were observed between the stable evolution and the control groups (P > 0.05). The levels of sIL-6R were higher in stable evolution patients than in the controls (P < 0.05) and no differences were observed between the chronic and stable evolution patients (P > 0.05). IL-6 decreased in patients with a favourable evolution, increased in those with an increased renal dysfunction and was maintained when the renal dysfunction was not modified. These results suggest that gammadelta T cells could participate in renal allograft maintenance and that IL-6 but not sIL-6R serum levels may provide a prognostic marker for measuring the evolution of kidney allograft.