Dysregulation of blood lymphocyte subsets and natural killer cells in schistosomal liver cirrhosis and hepatocellular carcinoma

Immunological factors are important in the pathogenesis of a wide spectrum of hepatobiliary diseases. Using flow cytometry, we determined the changes in lymphocyte subsets and natural killer cells in 123 individuals (81 patients with liver disease and 42 healthy volunteers). The liver diseases included periportal fibrosis (PPF, 10 patients), liver cirrhosis (LC, 31 patients), and hepatocellular carcinoma (HCC, 40 patients). Schistosomiasis and viral hepatitis B and C were the putative etiological agents of liver diseases. Immunophenotyping by indirect immunofluorescence was conducted using monoclonal antibodies to CD3 (T-lymphocytes), CD4 (helper/inducer T-cells), CD8 (suppressor/cytotoxic T-cells), and CD57 (natural killer cells) cell surface markers. Immunophenotyping of PPF patients showed no significant changes in all markers compared with the healthy controls. However, there was a significant decrease ( P<0.01) in CD3 and CD4 T-cells, and a highly significant increase ( P<0.001) in CD57 T-cells in patients with LC or HCC. In addition, LC and HCC patients showed no significant change in CD8 T-cells compared with controls. In conclusion, the progression of liver diseases is associated with a dysregulation of cellular immune responses. T-lymphocytes and natural killer cells may play a role in the immunopathogenesis of liver cirrhosis and HCC.     

Effect of low dose radiation on subpopulations of lymphocytes and T cell subsets in mice

<正> The effect of radiation on lymphocyte subpopulations and T cell subsets of peripheral blood was studied in mice after X- and y-irradiation.lt was found that (1) there were neither marked changes in the percentage and absolute number of acid alpha-naphthol acetyl esterase "positive(ANAE + )cells of different granular patterns, nor significant lowering of the T11/Ts ratio after single whole body X-irradiation in the dose range of 25-250 mGy with a dose rate of 12.5mGy/min. At the same time no significant changes were found at different time intervals after irradiation. After continuous low level irradiation with 60Co γ-rays with a dose rate of 5.4 mGy/6h.d,the ANAE grauular pattern of lymphocytes showed no significant changes with cumulative doses of 32.4 -520 mGy. (3)There was no decrease in the "splenocyte Ts index in Kunming mice after low dose X-irradiation. The results suggest that the stimulatory effect of low dose radiation on the PFC reaction can not be explained on the basis of a decrease in num     

墨旱莲乙酸乙酯总提物对T淋巴细胞功能的调节

目的 观察墨旱莲乙酸乙酯总提物（EAEEP）对T淋巴细胞介导的细胞免疫的影响。方法 采用正常小鼠及腹腔注射环磷酰胺造成免疫功能低下小鼠模型,观察EAEEP对外周血CD4^ ,CD8^ T淋巴细胞亚群比例、迟发性超敏反应（DTH）、ComA刺激的淋巴细胞平殖反应的影响。结果 EAEEP显著抑制正常小鼠的细胞免疫功能（正常组CD4^ T淋巴细胞比例为40．13％,EAEEP大剂量组降至30．87％）,而对于免疫功能低下模型鼠可显著促进细胞免疫功能（使免疫抑制组CD4^ T淋巴细胞比例由34．87％升至40．80％）。结论 墨旱莲乙酸乙酯总提物对T淋巴细胞介导的细胞免疫具有一定的免疫调节作用。     

手术对淋巴细胞亚群细胞周期的影响

目的观察实验动物围手术期脾脏淋巴细胞亚群细胞周期改变,分析手术对机体免疫功能的影响及其意义。方法对Balb／c小鼠行截肢术,分别于术后第1、2、3、4d处死,分离脾脏淋巴细胞,单克隆荧光抗体标记,流式细胞检测各淋巴细胞亚群的细胞周期。结果术后第1天CD3+、CD4+细胞的(S＋G2)期明显增高,分别为43.5±3.4％和46.5±4.1％,维持至术后第4天。CD8+(S＋G2)期术后第2天62.7±5.7％较对照组41.3±1.9％明显升高。sIG(膜表面免疫球蛋白)术后第2天(S＋G2)期明显升高。结论手术及应激可影响小鼠机体免疫功能。     

慢性扁桃体炎病儿细胞免疫功能的变化

1目的　探讨慢性扁桃体炎病儿细胞免疫功能的变化及临床意义。2方法　采用碱性磷酸酶抗碱性磷酸酶法及红细胞酵母菌花环法 ,检测了 40例慢性扁桃体炎病儿及 30例健康儿童红细胞 C3b受体花环率 (E- C3bRR )、红细胞免疫复合物花环率 (E- ICR)、T淋巴细胞亚群和可溶性白细胞介素 2受体 (s IL - 2 R)的变化。3结果慢性扁桃体炎病儿外周血 T淋巴细胞亚群 CD4阳性细胞及 CD4/ CD8比值较对照组降低 (t=2 .10 ,3.70 ,P <0 .0 1,0 .0 5 ) ,CD8阳性细胞较对照组升高 (t=6 .83,P<0 .0 1) ;E- C3b RR,E- ICR较对照组降低 (t=10 .47,3.35 ,P<0 .0 1) ;血清中 s IL- 2 R水平较对照组升高 (t=9.11,P<0 .0 1) ;CD4/ CD8比值与 s IL- 2 R水平呈显著负相关 (r=- 0 .8436 ,P<0 .0 1)。4结论　慢性扁桃体炎病儿细胞免疫功能低下且紊乱。     

消炎痛对中晚期原发性肝癌病人NK细胞及T淋巴细胞亚群的影响

观察中晚期原发性肝癌病人在口服呋喃氟尿嘧啶的基础上加用消炎痛 (吲哚美辛 ) (治疗组 )和不加用消炎痛 (对照组 )外周血自然杀伤 (NK)细胞及T淋巴细胞亚群的变化。结果发现 :治疗组治疗后NK细胞活性较治疗前及较对照组治疗后显著提高 (P <0 .0 5 ,P <0 .0 1) ,而T淋巴细胞亚群的变化差异无显著性。提示消炎痛能增强中晚期原发性肝癌NK细胞的活性     

雷公藤多甙的抗炎和免疫抑制作用

目的探讨雷公藤多甙(T     

急性乙型肝炎病人血清免疫球蛋白E水平与T淋巴细胞亚群的检测

[目的 ]观察急性乙型肝炎病人血清总免疫球蛋白E水平与T淋巴细胞亚群的关系 .[方法 ]应用间接酶联免疫吸附法测定急性乙型肝炎病人和正常人血清总免疫球蛋白E水平 ,应用APAAP法检测T淋巴细胞亚群 .[结果 ]急性乙型肝炎病人血清总免疫球蛋白E含量高于正常人 ;而病人T淋巴细胞亚群中的CD4 /CD8比值较正常人明显降低     

阻塞性睡眠呼吸暂停综合征患者T淋巴细胞亚群的变化

目的：探讨阻塞性睡眠呼吸道暂停综合征（ＯＳＡＳ）患者的血Ｔ淋巴细胞亚群（Ｔ－ＬＳ）的变化。方法：将经多导睡眠图检查确诊的ＯＳＡＳ患者按睡眠呼吸紊乱指数（ＡＨＩ）≤３０次／ｈ分为Ａ组（４４例）,ＡＨＩ〉３０次／ｈ分为Ｂ组（４７例）。正常对照组为Ｃ组（１０例）。测定３组患者血Ｔ－ＬＳ。结果：Ａ,Ｂ两组的ＣＤ＾＋２,ＣＤ＾＋４,ＣＤ＾＋８ ,ＣＤ＾＋４／ＣＤ＾＋８比较差异无显著性（Ｐ〉０．０５）。Ａ组,     

烧伤患者外周血T淋巴细胞亚群变化动态观察

为探讨烧伤后机体细胞免疫紊乱的机制,动态观察了30例不同烧伤面积患者不同时间的T淋巴细胞亚群变化情况.结果发现:中度烧伤组CD3,CD8伤后变化不大,CD4及CD4/CD8比值至伤后第二周起明显低于正常对照组:重度烧伤组,伤后一周CD3,CD4及CD4/CD8比值即明显降低,至伤后三周CD8明显高于对照组,特重烧伤组,伤后一周即出现CD3,CD4及CD4/CD8比值明显降低,而CD8则明显升高.结论:(1)烧伤后T淋巴细胞亚群的改变是烧伤患者免疫功能低下的原因之一;(2)中度烧伤患者CD/CD8比值下降,主要是由CD4下降所致而重度及特重度烧伤患者CD4/CD8比值下降则是由CD4下降和CD8上升共同作用所致;(3)烧伤面积越大,细胞免疫功能下降越明显,其发生机理越复杂.