老年肿瘤患者T淋巴细胞亚群和NK细胞数量的观察

老年肿瘤患者Ｔ淋巴细胞亚群和ＮＫ细胞数量的观察高秀子一、资料与方法１．研究对象：选自我院１９９３年至１９９７年经病理组织学（６５例）、Ｂ超（３例）、ＣＴ（８例）证实为肿瘤的老年患者７６例，其中肺癌１６例，结直肠癌１４例，胃癌１０例，肾癌、乳腺癌各８例...     

黄芪注射液对免疫功能低下患者的NK细胞活性、T淋巴细胞亚群的影响

近4年来我们对免疫功能低下的患者用黄芪注射液治疗,治疗前、后作自然杀伤细胞(NK细胞)活性及T淋巴细胞亚群的检测。结果表明黄芪注射液明显提高NK细胞活性及T淋巴细胞亚群CD 3水平,并恢复至正常水平。1　资料与方法1.1　研究对象正常组:21例,年龄15～51岁,平均48岁,黄芪组:29例,其中急慢性心肌炎10例,心肌病9例,高血压病及冠心病10例,年龄18～50岁,平均50岁。1.2　方法1.2.1　检验方法:NK细胞活性试验采用125I-UDR释放法,效靶比例为100∶1,自然释放率<10%,NK细胞活性=试验释放率-自然释放率。T淋巴细胞亚群采用武汉生物制品所的试剂…     

流式细胞仪检测急性病毒性心肌炎T淋巴细胞亚群及NK细胞的意义

目的观察急性病毒性心肌炎T淋巴细胞亚群及自然杀伤（NK）细胞的意义，探讨其发病机制。方法采用流式细胞术对急性病毒性心肌炎病人（观察组）进行CD3、CD4、CD8和NK细胞淋巴细胞亚群检测，并设正常人群作对照组。结果观察组CD8和NK明显高于对照组（P〈0．01），CD4和Th／Tc比值明显低于对照组（P〈0．01），观察组CD3的变化不明显（P〉0．05）。结论急性病毒性心肌炎病人淋巴细胞亚群中CD4、CD8和NK细胞亚群异常增殖；而且Th／Tc比例失衡，揭示细胞免疫功能紊乱与急性病毒性心肌炎有关。     

重症手足口病患儿T淋巴细胞亚群、NK细胞及细胞因子水平变化

目的 分析重症手足口病患儿外周血T淋巴细胞亚群、NK细胞及细胞因子水平变化及临床指导意义.方法 分析2018年1月—2020年4月在我院诊治的97例手足口病患儿资料,按病情分为重症组(25例),轻症组(72例);纳入同期50例健康体检儿童为对照组.检测T淋巴细胞亚群(CD3+T细胞、CD4+T细胞、CD8+T细胞)、NK细胞及细胞因子(TNF-α、IL-23、IL-22、IL-17)水平.对比上述指标在对照组、轻症组、重症组之间,重症组不同感染类型(Cox A16型、EV 71型、其他型)组间,重症组急性期组与恢复期组间及重症组预后不良组和预后良好组间的差异.分析4项细胞因子预测患儿预后的效能.结果 CD3+T细胞、CD4+T细胞、NK细胞水平从高到低均依次为对照组、轻症组、重症组,CD8+T细胞水平从低到高依次为对照组、轻症组、重症组;血清TNF-α、IL-23、IL-22、IL-17水平从低到高均依次为对照组、轻症组、重症组.组间上述指标比较差异均具有统计学意义(P均<0.05).重症组不同感染类型组间T淋巴细胞亚群、NK细胞和细胞因子水平比较,差异均无统计学意义(P均>0.05).与恢复期组相比,急性期组CD3+T细胞、CD4+T细胞、NK细胞水平更低,CD8+T细胞、TNF-α、IL-23、IL-22、IL-17水平更高,差异均具有统计学意义(P均<0.05).与预后良好组相比,预后不良组CD3+T细胞、CD4+T细胞、NK细胞水平更低,CD8+T细胞、TNF-α、IL-23、IL-22、IL-17水平更高,差异均具有统计学意义(P均<0.05).4项细胞因子联合预测不良预后敏感度为83.33％,准确度为71.43％.结论 检测外周血T淋巴细胞亚群、NK细胞和细胞因子水平有助于手足口病病情判断,可对重症手足口病患儿进行预后预测.     

慢性HBV感染者外周血T淋巴细胞亚群和NK细胞活性变化

探讨慢性HBV感染者外周血T淋巴细胞亚群及NK细胞活性变化情况。应用流式细胞法检测所有研T淋巴细胞亚群和NK细胞。慢性乙肝、肝炎肝硬化和慢性重型乙肝组患者CD3 、CD4 百分率及CD4 ／CD8 比值与正常组比较均有所下降,且慢性重型乙肝组患者CD4 百分率和CD4 ／CD8 比值与正常组比较差异有显著性。各临床类型慢性HBV感染者NK细胞百分率均降低,与正常对照组比较有统计学意义。慢性HBV感染者细胞免疫功能低下。检测T淋巴细胞亚群及NK细胞活性变化对判断病变程度、指导临床治疗具有一定参考价值。     

ITP血小板特异性抗体和T淋巴细胞亚群及NK细胞变化的意义探讨

目的：检测特发性血小板减少性紫癜（ITP）患者抗血小板膜糖蛋白（GPⅡb／Ⅲa、GPⅠb／Ⅸ）特异性抗体表达、T淋巴细胞亚群及NK细胞的变化,探讨相关因素在ITP发病机制中的作用。方法：应用改良血小板抗原单克隆抗体固相化检测技术（MAIPA）、流式细胞术分别检测52例ITP和24例正常对照组抗血小板膜糖蛋白（GPⅡb／Ⅲa、GPⅠb／Ⅸ）特异性抗体表达、T淋巴细胞亚群及NK细胞变化。结果：ITP组的血小板计数明显低于正常对照组（P〈0．05）;抗GPⅡb／Ⅲa及GPⅠb／Ⅸ抗体A值均高于正常对照组（P〈0．05）;相关分析表明ITP组血小板计数与两种特异性抗体水平均呈负相关关系;在T淋巴细胞亚群变化中,ITP组CD3^＋T淋巴细胞百分比、CD4^＋T淋巴细胞百分比及CD4^＋／CD8^＋的比值均明显低于正常对照组（P〈0．05）,CD8^＋T淋巴细胞百分比则显著高于正常对照组（P〈0．05）;NK细胞百分比明显低于正常对照组（P〈0．05）。结论：血小板特异性抗体及T淋巴细胞亚群的变化可较好地反映ITP这一病理过程,对提高诊断水平及指导临床有一定的实用价值。     

热疗对NSCLC化疗患者T淋巴细胞亚群及NK细胞的影响

目的探讨热疗辅助治疗非小细胞肺癌（NSCLC）的临床效果及机制。方法将58例NSCLC患者随机分为观察组和对照组各29例,分别予热疗联合化疗及单纯化疗。采用流式细胞仪检测两组治疗前后T淋巴细胞亚群和NK细胞。结果两组治疗后CD3＋、CD4＋、CD4＋／CD3＋、NK细胞均高于治疗前,CD;低于治疗前（P〈0．05）;观察组治疗后CD3＋、CD4＋、CD4＋／CD8＋、NK细胞均高于对照组治疗后,CD8＋低于对照组治疗后（P〈0．05）。观察组有效者CD3＋、CD4＋、CD4＋／CD8＋、NK细胞均高于对照组有效者,CD8＋低于对照组有效者（P〈0．05）。结论NSCLC患者普遍存在T淋巴细胞亚群及NK细胞功能低下,化疗可有效改善T淋巴细胞亚群及NK细胞功能,同时配合热疗可以更好的发挥两者的协同和相加作用,最大程度的提高患者的细胞免疫功能,增强疗效。     

乙型肝炎患者免疫促进剂治疗前后T淋巴细胞亚群及NK细胞的变化

对62例慢乙肝患者T淋巴细胞亚群及NK细胞检测,并观察分别经iRNA、猪苓多糖及LAK细胞治疗前后的细胞数量变化。结果发现治疗前CD_4~ 细胞降低,CD_8~ 细胞增高,CD_4~ /CD_8~ 比值下降。治疗后CD_4~ 细胞及NK细胞增高,CD_4~ /CD_8~ 比值上升。其中以LAK细胞治疗效果显著,与HBVM转阴呈正相关,说明提高机体免疫功能对清除病毒有一定作用。     

检测慢性乙肝患者外周血T细胞亚群,NK细胞活性及sIL—2R的临床意义

我们对67例慢性乙肝患者进行外周血T淋巴细胞亚群、NK细胞活性与白细胞介素2受体(sIL—2R)检测,以探讨其与慢性乙肝病情演变及预后的关系。1 资料与方法1.1 一般资料 67例慢性乙肝患者,男41例,女26例,年龄20～57岁,平均42.3岁;病程2.5～15年,平均8.4年。慢迁肝(CPH)32例,慢活肝(CAH)25例,重肝(CFH)10例。67例均符合1990年第六届全国肝病会议(上海)制定的诊断标准。其中38例用促肝细胞生长素(100mg加入0.9％生理盐水静滴,1次/d)治疗3个月。另设     

Graves病患者外周血T细胞亚群和NK细胞活性的变化

我们以单克隆抗体技术检测了Graves病(GD)患者治疗前外周血T细胞亚群,以~(51)Cr释放法动态观察了患者在治疗不同时期NK细胞活性的变化,并探讨了GD与NK细胞功能的关系以及抗甲状腺药物对其的影响作用。     

慢性乙型肝炎外周血中T细胞亚群和NK细胞的变化及临床意义

目的观察慢性乙型肝炎患者外周血中T细胞亚群及NK细胞含量的变化,进一步了解慢性乙型肝炎患者的免疫功能状况。方法收集48例慢性乙型肝炎患者作为实验组,其中HBe Ag阳性20例,阴性28例,选择26名健康人群作为正常对照组,采用流式细胞仪检测两组血清中CD3+T细胞、CD4+T细胞、CD8+T细胞和NK细胞的含量。结果与正常对照组比较,慢性乙型肝炎患者外周血中CD3+T细胞、CD4+T细胞和NK细胞的含量明显降低,而CD8+T细胞含量升高,差异具有统计学意义(P0.05),而HBe Ag阳性和阴性的慢性乙型肝炎患者之间的差异无统计学意义(P0.05)。结论慢性乙型肝炎患者免疫功能低下,这对患者免疫功能的判断、疾病进展、治疗及预后有一定的指导意义。     

乙型肝炎肝硬化患者外周血T淋巴细胞亚群和NK细胞的变化及临床意义

目的：探讨乙肝肝硬化患者外周血中T淋巴细胞亚群及NK细胞含量的变化,了解乙肝肝硬化患者的免疫功能状况。方法乙肝肝硬化患者81例,并按Child-Pugh分为A、B、C三级,26例健康者作为健康对照,采用流式细胞仪检测血清中CD3＋ T淋巴细胞、CD4^＋ T淋巴细胞、CD8^＋ T淋巴细胞和NK细胞的含量。结果 Child-Pugh B级和C级的乙肝肝硬化患者外周血中CD3^＋ T淋巴细胞、CD4^＋ T淋巴细胞和NK 细胞的含量明显降低,而CD8^＋ T淋巴细胞含量升高,与健康对照组比较,差异有统计学意义（P＜0．05）,而Child-Pugh A级的乙肝肝硬化患者T淋巴细胞亚群变化不明显（P＞0．05）。结论乙肝肝硬化患者的机体免疫功能低下,并且随着其肝功能下降及Child-Pugh 分级的增加而显著,对判断乙肝肝硬化患者的病情及预后具有重要的临床价值。     

自身免疫性肝炎患者肝内调节性T细胞的数量变化及其意义

目的 研究自身免疫性肝炎(AIH)患者外周血及肝内CD4+ CD25+调节性T细胞（Treg细胞）数量和功能变化.方法 应用流式细胞技术,比较正常人（25例）、慢性乙型肝炎(CHB)患者（18例）和AIH患者（25例）外周血中Treg细胞的变化;应用免疫组织化学染色方法进行Foxp3染色,比较CHB患者（15例）和AI...     

Induction of CD4+CD8+ double positive T cells and increase in CD5+ B cells in efferent lymph in sheep infected with Trypanosoma evansi

The effects of Trypanosoma evansi on efferent lymphocyte phenotypes draining from a lymph node primed with Pasteurella haemolytica vaccine were studied in sheep. The prefemoral efferent lymphatic ducts of the infected sheep along with those of two uninfected sheep were surgically cannulated. Lymph was collected and lymphocytes recovered from it analysed by two-colour indirect immunofluorescence staining and cytofluoremetry in a fluorescence activated cell analyser (FACSCAN). The study showed the appearance and persistence of T. evansi in the efferent lymph for a long period of time and the appearance of CD4⁺CD8⁺ (double positive, DP) T lymphocytes in the efferent lymph of infected animals. The infection also resulted in increases in CD5⁺ B cells in the prefemoral efferent lymph. In addition, there were decreases in the output of conventional B cells, CD5⁺ and CD4⁺ T cell subsets but large increases in CD8⁺ cells followed by terminal depletion of all cell subsets. In contrast, inoculation of sheep with pasteurella vaccine antigen alone produced little alterations in the proportions, but large increases in the numbers of all T cell subsets except that of CD8⁺ cells which also showed little variation; and there was a concurrent increase in the numbers and proportions of efferent B cells. In addition, the abnormal expression of DP and CD5⁺ B cells did not occur in the uninfected vaccinated sheep. It is concluded that these abnormal changes in the kinetics of efferent lymphocyte phenotypes are likely to play a role in the genesis of the generalized immunosuppression seen in trypanosome-infected hosts.     

Comparative studies of cardia carcinoma and infracardial gastric carcinoma

In a part retrospective, part prospective study, 354 carcinomas of the cardia were compared with 1259 infracardial gastric carcinomas with regard to the age and sex of the patients, macroscopic classification, microscopic classifications, depth of invasion, and survival rates. Mortality rates are generally higher in cardia carcinoma than in stomach carcinoma. The difference is due to the significantly poorer survival of cardia carcinoma patients in stage I, while mortality rates in stages II, III, and IV of both types are approximately similar. Highly significant differences were also found with regard to sex ratio, incidence of macro- and microscopic subtypes, and invasive growth. The typical cardia carcinoma occurs preferentially in men, is mostly well-delineated, and is manifested as an ulcerated or polypoid, well-differentiated tumor of expansive growth, corresponding to Laurén's intestinal type. These results confirm the concepts of McPeak and Warren, MacDonald, and Siewert et al., that the carcinoma located in the cardia must be seen as a separate entity of gastric carcinoma.     

Primary CD56+ T/NK cell lymphoma of the colon

Primary T/natural killer (NK) cell lymphoma of the colon is extremely rare. Despite the advances in histological and immunophenotypic studies, the diagnosis of primary T/NK cell lymphoma of the colon can be delayed because the early symptoms and colonoscopic findings may be very similar to those of inflammatory bowel diseases such an Crohn's colitis, and most physicians have little available information on this group of neoplasms. Moreover, florid nonspecific inflammatory infiltrates would not allow characterization of the tumor cells in such an inflammatory background. Herein, we describe a patient who initially presented with features that were clinically and colonoscopically similar to Crohn's colitis. Three months later, he had cecal bleeding and perforation, and primary T/NK cell lymphoma of the colon was diagnosed through immunophenotypic and genotypic studies of surgical specimens. Received: March 5, 2001 / Accepted: August 24, 2001 Reprint requests to: D.K. Lee     

Clinical significance of regulatory T cells in patients with myelodysplastic syndrome

Objective: Foxp3⁺ regulatory T cells (Tregs) play a central role in maintaining immune tolerance. Their expansion in malignant diseases leads to the suppression of host anti‐tumour responses. In this study, we evaluated the clinical significance of Tregs in patients with myelodysplastic syndrome (MDS). Patients and Methods: We analysed the number of CD4⁺ CD25⁺ Foxp3⁺ Tregs using three‐colour flow cytometry in the peripheral blood of 26 patients with MDS classified according to the World Health Organization classification method into four cases of refractory anaemia and refractory anaemia with ringed sideroblasts (RA/RARS), 15 cases of refractory cytopenia with multilineage dysplasia (RCMD), three cases of refractory anaemia with excess blast‐1 (RAEB‐1) and four cases of refractory anaemia with excess blast‐2 (RAEB‐2). Eighteen healthy volunteers were included as the control group. Results: The mean absolute numbers of Tregs in the RA/RARS group (0.06 × 10⁹/L; 95% CI, 0.02–0.10 × 10⁹/L) and RAEB group (0.06 × 10⁹/L; 95% CI, 0.02–0.10 × 10⁹/L) were significantly higher than that of the control group (0.03 × 10⁹/L; 95% CI, 0.02–0.03 × 10⁹/L) (P < 0.05). However, in the RCMD group, there was no significant difference in the mean absolute number of Tregs (0.03 × 10⁹/L; 95% CI, 0.02–0.04 × 10⁹/L) compared with the control group. Regarding the mean level of the CD8/Foxp3 ratio, there were significant decreases in the RA/RARS group (2.8; 95% CI, 0.7–4.9; P < 0.01), RCMD group (3.4; 95% CI, 2.0–4.4; P < 0.001) and RAEB group (2.1; 95% CI, 1.7–2.5; P < 0.001) compared with the control group (6.1; 95% CI, 5.1–7.0). Conclusions: The expansion of natural CD4⁺ Tregs may contribute to the suppression of CD8 through the Th1‐mediated immune response in MDS. The low CD8/Foxp3 ratio is a characteristic feature in MDS. To determine whether the expansion of CD4⁺ Tregs contributes to the progression of MDS subtypes into more aggressive subtypes, more MDS cases and further follow‐up are required.     

NK cell dysfunction with down‐regulated CD16 and up‐regulated CD56 molecules in patients with esophageal squamous cell carcinoma

NK cells can be divided into two subsets, CD56^dim and CD56^bright NK cells, based on their expression of CD56 and CD16. In the present study, we analyzed NK cell dysfunction in patients with esophageal squamous cell carcinoma (ESCC), with a particular focus on the expression of CD16 and CD56 molecules. Expression of CD16 and CD56, and the distribution of CD56^dim or CD56^bright NK cells gated on CD56(+)CD3(–) NK cells were compared between ESCC patients (n= 40) and healthy donors (n= 38). Purified NK cells were evaluated for Cetuximab‐mediated antibody‐dependent cellular cytotoxicity (ADCC) against epidermal growth factor receptor (EGFR)‐expressing ESCC cell lines. Although there were no significant differences in the distribution of CD56^dim and CD56^bright NK cells between ESCC patients and healthy donors, down‐regulated CD16 and up‐regulated CD56 were significantly observed on NK cells of ESCC patients, paralleling the impairment of Cetuximab‐mediated ADCC, in comparison with healthy donors. After patients received curative resections of ESCC, the down‐regulated CD16 and up‐regulated CD56 were significantly restored to the levels of healthy donors. Moreover, TGF‐beta1 partially contributed to down‐regulation of CD16 on NK cells. Down‐regulated CD16 and up‐regulated CD56 molecules on NK cells were observed in ESCC patients, resulting in NK cell dysfunction.     

Differentially enhanced cytokine gene expression in CD4+ and CD8+ T cells in mesenteric lymph nodes in rats infected with Nippostrongylus brasiliensis

Autoinfective strongyloidiasis is potentially fatal, yet the majority of infected individuals harbour asymptomatic and chronic infections. The role of humoral responses in modulating autoinfection was assessed by examining antibody isotype responses to filariform larval antigens amongst chronically infected ex-Far East Prisoners of War (exFEPOWs) with longstanding (> 30 years) infection. Serum immunoglobulin (Ig)G1, IgG4, IgE and IgA responses to whole Strongyloides stercoralis L3 extracts and their constituent antigenic components were characterized by ELISA and quantitative immunoblotting. Comparison of two groups of S. stercoralis infected exFEPOWs with and without detectable larvae in stool demonstrated novel trends. Significantly enhanced recognition of six immunodominant antigenic components by IgA was associated with undetectable larval output, as was enhanced IgE recognition of several components. Additionally, IgE and IgG4 exhibited parallel antigen recognition patterns. These findings are consistent with roles for IgA in modulating larval output, for IgE in regulating autoinfection, and for IgG4 in blocking IgE-mediated responses in human strongyloidiasis.     

70岁以上食管癌和贲门癌患者的开胸手术分析

目的 探讨高龄食管癌和贲门癌患者的外科手术选择及围手术期处理方法 . 方法 回顾性分析1088例食管癌和贲门癌患者的临床资料,分为70岁以下(41～69岁)、70～74岁、75～79岁、80岁以上(80～90岁)4组.统计4组患者术后并发症、住院时间及预后,并对手术选择和围手术期治疗措施进行分析. 结果 70岁以上食管癌和贲门癌患者术后肺部感染、心律失常、精神症状和切口不愈的发生率明显上升,术后住院时间明显延长;80岁以上的高龄患者术后肺部感染发生率和术后住院时间较其他年龄段明显上升.全组痊愈1084例,死亡4例. 结论 在高龄食管癌和贲门癌患者中,了解开胸术后并发症发生状况,加强对肺部感染的预防和治疗是决定手术成败的关键.