恶性淋巴瘤患者脑脊液可溶性白细胞介素2受体水平的动态观察及其临床意义

用双抗体夹心ＥＬＩＳＡ方法动态监测４６例恶性淋巴瘤（ＭＬ）患者脑脊液（ＣＳＦ）中可溶性白细胞介素２受体（ｓＩＬ－２Ｒ）水平变化。发现ＭＬ患者脑脊液中ｓＩＬ－２Ｒ比正常人显著升高（Ｐ＜０．００１），且６例有中枢神经系统（ＣＮＳ）浸润者ｓＩＬ－２Ｒ与无ＣＮＳ浸润者相比有显著性差异（Ｐ＜０．０１）；而治疗达ＣＲ或ＰＲ后ｓＩＬ－２Ｒ显著降低（Ｐ＜０．０５），与正常人者相比Ｐ＞０．０５，脑脊液ｓＩＬ－２Ｒ水平与血清中ｓＩＬ－２Ｒ水平无显著相关性。认为动态监测ＭＬ患者脑脊液ｓＩＬ－２Ｒ水平有助于估价病变严重程度、ＣＮＳ有无浸润及疗效评定     

恶性淋巴瘤患者脑脊液可溶性白细胞介素2受体水平的动态观？…

用双抗体夹心ＥＬＩＳＡ方法动态监测４６例恶性淋巴瘤（ＭＬ）患者脑脊液（ＣＳＦ）中可溶性白细胞介素２受体（ｓＩＬ－２Ｒ）水平变化。发现ＭＬ患者脑脊液中ｓＩＬ－２Ｒ比正常人显著升高（Ｐ〈０．００１），且６例有中枢神经系统（ＣＮＳ）浸润者ｓＩＬ－２Ｒ与无ＣＮＳ浸润者相比有显著性差异（Ｐ〈０．０１）；而治疗达ＣＲ或ＰＲ后ｓＩＬ－２Ｒ显著降低（Ｐ〈０．０５），与正常人者相比Ｐ〉０．０５，脑脊液ｓＩＬ－２Ｒ水     

急性白血病患者外周血几种细胞因子水平的测定及其意义

目的了解ＩＬ－２等细胞因子在白血病发病机制中的作用。方法测定了５１例急性白血病患者ＰＢＭＮＣ培养上清中ＩＬ－２、ＩＬ－６水平及血清ｓＩＬ－２Ｒ、ＴＮＦα水平。结果（１）急性白血病患者ＰＢＭＮＣ培养上清的ＩＬ－２水平显著低于正常（Ｐ＜０．０１）及ＣＲ组（Ｐ＜０．０５）;而ＩＬ－６水平显著高于正常及ＣＲ组（Ｐ＜０．０１）。（２）急性白血病患者血清ｓＩＬ－２Ｒ及ＴＮＦα水平显著高于正常及ＣＲ组（Ｐ＜０．０１）。（３）急性白血病患者血清ｓＩＬ－２Ｒ水平与其外周血幼稚细胞比例呈正相关（ｒ＝０．４１０,Ｐ＜０．０５）;在Ｍ５患者中血清ｓＩＬ－２Ｒ与ＴＮＦα水平正相关（ｒ＝０．８７４,Ｐ＜０．０１）。结论急性白血病患者存在着细胞因子网络的失调,并在急性白血病的发生、发展中起一定的作用。     

食管癌患者放疗前后血清可溶性白细胞介素－2受体水平测定

作者用双抗体夹心酶联免疫吸附试验（ＥＬＩＳＡ法）检测了５７例食管癌患者放疗前后血清可溶性白细胞介素－２受体（ｓＩＬ－２Ｒ）水平，并与２０例正常对照组进行比较。结果显示：食管癌患者放疗前血清ｓＩＬ－２Ｒ水平显著高于正常对照（Ｐ＜０．００１），且升高水平与食管病变长度呈正相关；放疗后血清ｓＩＬ－２Ｒ水平较放疗前显著降低（Ｐ＜０．００１）。与正常对照组比较，差异无显著性意义（Ｐ＞０．０５），而放疗前后血清ＳＩＬ－２Ｒ水平降低程度在完全缓解和部分缓解病人之间，差异无显著性意义（Ｐ＞０．０５）。食管癌患者放疗前血清ｓＩＬ－２Ｒ水平升高，可能与患者表现的免疫功能低下有一定关系；而放疗后水平下降，可能是由于放射治疗降低了免疫细胞对ｓＩＬ－２Ｒ的释放所致。结果表明，食管癌患者血清ｓＩＬ－２Ｒ水平与其肿瘤的消长密切相关，血清ｓＩＬ－２Ｒ有可能作为疗效和判断预后的一个重要监测指标。     

胃癌患者血清sIL－2R测定的临床价值

应用双抗加心法对７８例胃癌患者血清可溶性白介素２受体（ｓＩＬ－２Ｒ）进行临床研究。结果发现：胃癌患者ｓＩＬ－２Ｒ水平明显高于胃良性疾病患者和正常人（Ｐ＜０．０１）；Ⅲ、Ⅳ期高于Ⅰ、Ⅱ期（Ｐ＜０．０５）；手术切除后（根治或姑息）ｓＩＬ－２Ｒ显著下降（Ｐ＜０．０１）；手术后复发和转移患者血清ｓＩＬ－２Ｒ升高（Ｐ＜０．０１）；如果患者血清ｓＩＬ－２Ｒ高于１０００Ｕ／ｍｌ，生存期短。提示胃癌患者ｓＩＬ－２Ｒ水平高低与肿瘤分期、手术方式、复发转移和预后有关，监测胃癌患者血清ｓＩＬ－２Ｒ水平对临床病情和预后有重大意义。     

原发性肝癌患者血清可溶性白介素2受体检测及其临床意义

应用夹心酶联免疫吸附法（ＥＬＩＳＡ）检测４５例原发性肝癌（ＰＨＣ）患者及４２例健康成人的血清可溶性白介素２受体（ｓＴＬ－２Ｒ）水平，结果显示ＰＨＣ患者ｓＩＬ－２Ｒ水平较健康成人明显增高（Ｐ＜０．０１），其升高幅度与肿瘤体积大小有关（Ｐ＜０．０５），而与ＡＦＰ及ＨＢｓＡｇ阳性与否无关（Ｐ＞０．０５）。故ＰＨＣ者测定血清ｓＩＬ－２Ｒ不仅能了解肿瘤患者的机体免疫功能状态，且在一定程度上能对疾病的严重程度、疗效及判断预后作出评估。     

NK和sIL-2R在肺癌化疗中的临床价值

为了评价肺癌患者化疗后血清ＮＫ细胞活性及ｓＩＬ－２Ｒ水平变化的临床价值，作者采用ＬＤＨ释放法和双抗体夹心ＥＬＩＳＡ法检测４７例肺癌病人和４１例正常对照者的血清ＮＫ细胞活性和ｓＩＬ－２Ｒ水平。结果显示，与正常人相比，肺癌病人血清ｓＩＬ－２Ｒ水平增高（Ｐ＜０．０１），ＮＫ细胞活性降低（Ｐ＜０．０５），且化疗后有效病人血清ｓＩＬ－２Ｒ水平明显低于化疗前（Ｐ＜０．０１）。结果提示血清ＮＫ细胞活性和ｓＩＬ－２Ｒ水平可以作为判断肺癌疗效和预后的指标。     

保尔佳对原发性肝癌患者sIL-2R、IL-6、TNFα的影响及促进肝癌细胞凋亡的初步研究

对２０例原发性肝癌患者（大剂量组１０例、小剂量组１０例）临床应用保尔佳１周，用ＥＬＩＳＡ法检测治疗组用药前后外周血及用药后门静脉血的ｓＩＬ－２Ｒ，ＩＬ－６，ＴＮＦα的水平变化及用末端转移酶标记法（ＴＵＮＥＬ法）检测治疗组肝癌细胞的凋亡情况，与未治疗组、正常对照组相比。结果表明，治疗组外周血ｓＩＬ－２Ｒ水平明显下降（大剂量组Ｐ＜０．０１、小剂量组Ｐ＜０．０５），ＩＬ－６水平明显上升（大剂量组Ｐ＜０．０１、小剂量组Ｐ＜０．０５），ＴＮＦα水平有所下降（大剂量组Ｐ＜０．０５、小剂量组Ｐ＞０．０５），治疗组门静脉血与外周血ｓＩＬ－２Ｒ、ＩＬ－６、ＴＮＦα两者间无明显差异（Ｐ＞０．０５）。ＴＵＮＥＬ法检测显示保尔佳能促进肝癌细胞的凋亡（Ｐ＜０．０１，大、小剂量组间Ｐ＞０．０５）。且保尔佳对肝癌患者的血常规、肝功能等无不良影响。保尔佳是一种具有增强机体免疫功能、促进肿瘤细胞凋亡且无明显毒副作用的新型抗癌药物。     

恶性肿瘤病人血清SIL－2R与红细胞免疫功能测定及临床意义

本文对９１例恶性实体瘤病人的血清ＳＩＬ－２Ｒ、ＲＢＣ－Ｃ３ｂＲＲ、ＲＢＣ－ＩＣＲ进行测定，结果显示：恶性肿瘤病人血清ＳＩＬ－２Ｒ增高，ＲＢＣ－ＩＣＲ增多，而ＲＢＣ－Ｃ３ｂＲＲ降低（Ｐ＜０．００１）；不同类型恶性肿瘤病人之间，血清ＳＩＬ－２Ｒ、ＲＢＣ－Ｃ３ｂＲＲ及ＲＢＣ－ＩＣＲ相比无显著差异性（Ｐ＜０．０５）；血清ＳＩＬ－２Ｒ水平与ＲＢＣ－Ｃ３ｂＲＲ呈负相关（ｒ＝－０．５１，Ｐ＜０．０５），与ＲＢＣ－ＩＣＲ呈正相关（ｒ＝０．４８，Ｐ＜０．０５）。这表明：恶性肿瘤病人血清ＳＩＬ－２Ｒ升高，红细胞免疫功能低下，其两者的变化可能与恶性肿瘤的发生、发展有密切关系，值得临床进一步研究。     

恶性肿瘤患者血清sIL－2R临床意义的评估

用ＥＬＩＳＡ法测定３６５例肿瘤患者（包括胃癌、肝癌、胰腺癌、结肠癌、乳腺癌、卵巢癌、肺癌、恶性淋巴瘤、白血病）和２３０例相关脏器的良性疾病患者以及５１名健康人的血清ｓＩＬ－２Ｒ浓度，发现恶性肿瘤患者血清ｓＩＬ－２Ｒ水平明显高于良性疾病患者和健康人对照组（Ｐ＜０．００１），伴转移患者的ｓＩＬ－２Ｒ升高更明显，与不伴转移者相比，差异显著（Ｐ＜０．００１）。作为免疫活性标志，血清ｓＩＬ－２Ｒ可以作为评估肿瘤发生和检测复发的辅助手段。     

喉癌患者血清可溶性白细胞介素2受体（sIL－2R）的表达及其意义

应用双抗体夹心ＥＬＩＳＡ方法测定了３０例喉癌患者血清可溶性白细胞介素２受体（ＳＩＬ－ＺＲ）水平。结果表明：喉癌患者血清ＳＩＬ－ＺＲ水平明显高于正常人（Ｐ＜０．０１）；与临床分期有关，病期越晚，ｓＩＬ－２Ｒ水平越高；ｓＩＬ－２Ｒ水平超过１０００Ｕ／ｍｌ者，多预后不良；９例术后２～８月再次采血检验，６例无癌生存者ｓＩＬ－２Ｒ水平明显下降（Ｐ＜０．０１），３例复发的患者血清ｓＩＬ－２Ｒ升高。提示：喉癌患者血清ｓＩＬ－２Ｒ的测定对预后判断和疗效观察有重要意义。     

头颈癌患者T细胞亚群与白细胞介素2及其受体的动态研究

研究对35例头颈癌患者手术前后外周血T细胞亚群、IL－2及sIL－2R表达水平进行了检测，并对其中20例患者进行动态观察。结果显示：头颈癌患者CD；及sIL－2R表达显著增高，比值及IL－2水平明显低于正常人；手术后及sIL－2R表达显菩下降，比位与IL－2水平明显回升；动态观察复发者，比值及IL－2水平再显下降，及sIL－2R表达又见回升。表明：T细胞亚群与IL-2／sIL－2R的检测能反应机体抗肿瘤免疫水平，对监视病情发展、疗效观察及预后判断具有一定的临床价值，动态观察有助于监视肿瘤的复发与转移。     

Serum level of a soluble receptor for interleukin-2 as a prognostic factor in patients with gastric cancer

Increased levels of a soluble receptor for interleukin-2 (sIL-2R) have been found in the serum from patients with a variety of malignancies. Levels of sIL-2R have not previously been examined in a large group of patients with gastric cancer as a possible indicator of prognosis. Serum levels of sIL-2R were measured preoperatively by an enzyme-linked immunosorbent assay in 121 patients with gastric cancer. The preoperative levels of sIL-2R in patients with gastric cancer were significantly higher than those in normal controls. An elevated level of sIL-2R was significantly correlated with certain clinicopathologic features, which included depth of invasion, lymph node metastasis, lymphatic vessel invasion, blood vessel invasion and clinical stage. The postoperative survival time of patients with elevated levels of sIL-2R was significantly shorter than that of patients with normal levels. Furthermore, a multivariate analysis using Cox's proportional hazards model showed that the combination of levels of carcinoembryonic antigen and sIL-2R was an independent indicator of prognosis. Thus, the serum level of sIL-2R might be a useful prognostic indicator in patients with gastric cancer.     

血清CEA和sIL－2R检测对上皮来源恶性肿瘤诊断的研究

测定了１４０例恶性肿瘤患者血清癌胚抗原（ＣＥＡ）值和可溶性白细胞介素２受体（ｓＩＬ－２Ｒ）水平。结果表明：恶性肿瘤患者ＣＥＡ值和ｓＩＬ－２Ｒ水平均明显高于正常人（Ｐ＜０．００１）。提示：检测血清中ＣＥＡ值和ｓＩＬ－２Ｒ水平，对恶性肿瘤的辅助诊断具有重要的价值。     

肺癌化疗前后血清可溶性白介素－2受体水平测定的临床意义

目的评价肺癌患者化疗前后血清可溶性白介素－２受体（ｓＩＬ－２Ｒ）水平变化的临床意义。方法采用双抗体夹心酶联免疫吸附测定方法检测５４例肺癌患者化疗前后ｓＩＬ－２Ｒ水平．并与５０例正常对照作比较。结果肺癌患者ｓＩＬ－２Ｒ水平（１８７．８８±４４．６６ｕ／ｍｌ）显著高于正常对照组（１０６．８５±１８．７２ｕ／ｍｌ）（Ｐ＜０．０５），且化疗后有效（完全缓解和部分缓解）患者ｓＩＬ－２Ｒ水平（１０３．６３±３７．９３Ｕ／ｍｌ）显著低于化疗前者（１９２．３２±７６．９６ｕ／ｍｌ）（Ｐ＜０．０５）。结论血清。ｓＩＬ－２Ｒ检测可以作为疗效和判断预后的一个监测指标。     

可溶性白介素－2受体水平和红细胞C_3b受体活性与恶性肿瘤病情相关性的研究

为探讨血清可溶性白细胞介素—２受体（ＳＩＬ—２Ｒ）水平和红细胞Ｃ３ｂ受体活性与恶性肿瘤病情严重程度的关系，本文检测了１０８例恶性肿瘤病人血清ＳＩＬ—２Ｒ水平，红细胞Ｃ３ｂ受体花环率（Ｅ—Ｃ３ｂＲＲ）和肿瘤红细胞花环率（ＴＥＲＲ）的变化。结果显示，恶性肿瘤病人ＳＩＬ—２Ｒ明显增高，（Ｅ—Ｃ３ｂＲＲ）和ＴＥＲＲ明显降低，与对照组比较差异有显著性（Ｐ＜０．００１）；有淋巴结转移和病死者ＳＩＬ—２Ｒ增高和Ｅ—Ｃ３ｂＲＲ，ＴＥＲＲ降低较无转移和存活者更明显（Ｐ＜０．００１）；手术前ＳＩＬ—２Ｒ增高、Ｅ—Ｃ３ｂＲＲ和ＴＥＲＲ降低较手术后更明显（Ｐ＜０．００１，０．０１）。恶性肿瘤病人ＳＩＬ—２Ｒ水平与Ｅ—Ｃ３ｂＲＲ和ＴＥＲＲ呈负相关（Ｐ＜０．００１）。提示血清ＳＩＬ—２Ｒ水平增高和红细胞ｃ３ｂ受活性降低恶性肿瘤病情严重程度，淋巴结转移和预后有密切关系。     

胃癌病人血清sIL－2R水平与红细胞免疫功能的相关性研究

作者采用双抗体夹心ＥＬＩＳＡ法和红细胞Ｃ３ｂ酵母多糖法检测４７例胃癌病人血清可溶性白细胞介素２受体（ｓＩＬ－２Ｒ）水平与红细胞免疫功能的变化，并与正常对照组４０例相比较，结果显示：胃癌病人血清ｓＩＬ－２Ｒ水平增高（Ｐ＜０．０１），红细胞免疫功能低下（Ｐ＜０．０１）；血清ｓＩＬ－２Ｒ水平与ＲＢＣＣ３ｂＲ呈负相关（ｒ＝－０．６７，Ｐ＜０．０１）。提示：胃癌病人有免疫功能的紊乱，血清ｓＩＬ－２Ｒ水平的增高和红细胞免疫功能的低下可能与胃癌的发生发展有关。     

IL-6 trans-signaling in formation and progression of malignant ascites in ovarian cancer

Classic signaling by the proinflammatory cytokine interleukin 6 (IL-6) involves its binding to target cells that express the membrane-bound IL-6 receptor α. However, an alternate signaling pathway exists in which soluble IL-6 receptor (sIL-6Rα) can bind IL-6 and activate target cells that lack mIL-6Rα, such as endothelial cells. This alternate pathway, also termed trans-signaling, serves as the major IL-6 signaling pathway in various pathologic proinflammatory conditions including cancer. Here we report that sIL-6Rα is elevated in malignant ascites from ovarian cancer patients, where it is associated with poor prognosis. IL-6 trans-signaling on endothelial cells prevented chemotherapy-induced apoptosis, induced endothelial hyperpermeability, and increased transendothelial migration of ovarian cancer cells. Selective blockade of the MAPK pathway with ERK inhibitor PD98059 reduced IL-6/sIL-6Rα-mediated endothelial hyperpermeability. ERK activation by the IL-6/sIL-6Rα complex increased endothelial integrity via Src kinase activation and Y685 phosphorylation of VE-cadherin. Selective targeting of IL-6 trans-signaling in vivo reduced ascites formation and enhanced the taxane sensitivity of intraperitoneal human ovarian tumor xenografts in mice. Collectively, our results show that increased levels of sIL-6Rα found in ovarian cancer ascites drive IL-6 trans-signaling on endothelial cells, thereby contributing to cancer progression. Selective blockade of IL-6 trans-signaling may offer a promising therapeutic strategy to improve the management of patients with advanced ovarian cancer.     

Serum soluble interleukin-2 receptor level as a prognostic indicator in gastric cancer.

T lymphocytes, activated by interleukin 2 during an anti-tumour response, release soluble interleukin 2 receptors (sIL-2R) into the bloodstream. We analysed the prognostic value of the serum sIL-2R level in gastric cancer. Serum concentration of sIL-2R in 96 gastric cancer patients and 100 healthy control subjects'' was measured by enzyme-linked immunosorbent assay. All survivors were followed for more than 50 months. Serum sIL-2R level was considered with respect to prognosis, clinicopathological factors, other tumour markers and peripheral blood cell count. Stage III and IV patients had significantly higher sIL-2R levels than lower stage patients and control subjects. Stage III and IV gastric cancer patients were divided into ''high'' and ''low'' slL-2R groups based upon the control subjects'' serum sIL-2R mean value plus one standard deviation. The high group had a significantly worse prognosis than the low group, although clinicopathological features and treatments were similar. Multivariate analysis demonstrated that the serum sIL-2R level is an independent indicator. The sIL-2R level did not correlate with carbohydrate antigen 19-9, however it did correlate with carcinoembryonic antigen (r = 0.22) and with numbers of peripheral blood monocytes (r = 0.54). In conclusion, serum sIL-2R may predict the outcome of gastric cancer patients with stage III or IV disease.