共查询到19条相似文献,搜索用时 109 毫秒
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目的 探讨良性和恶性腹水中可溶性白介素Ⅱ受体 (SIL 2R)与肿瘤坏死因子 (TNF)水平及其临床意义。方法 采用双抗体夹心ELISA法检测 30例良性、2 4例恶性腹水病人的腹水中SIL 2R与INF表达。结果 良性腹水中SIL 2R与TNF含量分别为 12 10 2 0± 2 6 3 72U/ml、79 32± 2 2 39ng/L ;恶性腹水中SIL 2R与TNF含量分别为 6 10 36± 189 2 3U/ml、2 0 0 1± 2 2 2 5ng/L ;良性腹水组SIL 2R与TNF浓度均明显高于恶性腹水组 ,两组间差异有显著意义 (P <0 0 1) ;联合检测两者诊断恶性腹水的敏感度、特异度、准确度分别为 92 %、83%、90 %。结论 检测腹水中SIL 2R与TNF含量有助于良、恶性腹水的鉴别诊断。 相似文献
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应用酶联免疫吸附法(ELISA)测定了68例Graves病(GD)患者和20例健康对照者血清白介素6(IL-6)和可溶性白介素6受体(sIL-6R)含量。结果表明:(1)GD患者未治疗组、部分缓解组和缓解组血清IL-6水平分别高于健康对照组;(2)GD患者未治疗组、部分缓解组血清sIL-6R水平分别高于缓解组和健康对照组;(3)血清IL-6与sIL-6R之间无相关关系。提示血清IL-6和sIL-6R参与GD的发病过程,对其检测具有监测GD病情的价值。 相似文献
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目的 研究肾病综合征患可溶性白介素2受体(SIL-2R)变化及临床意义。方法 36例肾病综合征患及20例健康志愿血、尿标本,用ELISA法检测其SIL-2R浓度。结果 肾病综合征发作期(252±109u/ml,167±80u/ml,n=22)血清及尿液SIL-2R浓度明显高于肾病综合征缓解期(120±26u/ml,101±46u/ml,n=14)及健康对照(113±110u/ml,84±18u/ml,n=20,P<0.01);肾病综合征缓解期和健康对照无明显差别(P>0.05)。血清SIL-2R浓度和血肌酐浓度呈正相关(r=0.44,P<0.01);尿液SIL-2R浓度和尿蛋白是呈正相关(r=0.48,P<0.01)。结论 SIL-2R浓度升高可作为肾病综合征活动及(或)肾功能恶化的指标。 相似文献
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肺癌患者血清可溶性白细胞介素-6受体和一氧化氮检测的临床意义 总被引:2,自引:0,他引:2
目的:评价可溶性白细胞介素-6受体(sIL-6R)与一氧化氮(NO)水平对肺癌诊断和病情评估的临床价值。方法:用双抗体夹心酶联免疫吸附 试验(ELISA)检测了20例正常对照和60例肺癌患者发病不同阶段,及化疗前、后血清中sIL-6R水平,及光度法检测NO水平。结果:肺癌患者血清中sIL-6R水平高于正常对照组,IV期肺癌组血清中sIL-6R水平又高于I期肺癌组。化疗后,肺癌患者血清中的sIL-6R水平明显下降,不但低于化疗前水平,更低于对照组水平。肺癌患者血清中NO水平也低于正常对照组。结论:肺癌患者NO水平下降,提示肺癌局部抗肿瘤功能可能存在缺陷。肺癌患者体内存在sIL-6R的高表达,随着肺癌病情进展sIL-6R表达增多,sIL-6R的测定有助于临床肺癌发病的辅助诊断,并且对肺癌分期和预后判断有一定的临床意义。经直线相关性分析未发现血清sIL-6R水平与NO间有明显相关性。 相似文献
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目的:研究早期自然流产妇女血清中可溶性肿瘤坏死因子受体(sTNFR)I和Ⅱ的水平。方法:应用双抗体夹ABC-ELISA法检测孕3月内20例正常妊娠,20例第一次自然流产(spontaneous abortion,SA)和15例反复自然流产(recurrent spontanous abortion,RSA)妇女血清中的sTNFR I与sTNFRⅡ。结果:SA与对照组比较,sTNFR I显著增高(P<0.05),sTNFR I与sTNFRⅡ在RSA中的水平较SA均有显著增高(P<0.01),结论:sTNFR可能与自然流产的发生发展有关,其水平(尤其是sTNFR I)的升高就妊娠而言可能具有自我保护和自我稳定的生理意义。 相似文献
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用ELISA方法检测了42例甲型肝炎(HA)、21例戊型肝炎(HE)、55例乙型肝炎(HB)、15例丙型肝炎(HC)、5例了型肝炎(HD)患者血清中sIL-2R水平,同时设100例健康对照组。并对各组病例进行了急性期、恢复期及慢性化(指HB、HC、HD)血清中sIL-2R水平动态观察。结果显示,健康对照组为214.6±97.3U/ml,各类急性、慢性肝炎血清中sIL-2R水平明显高于对照组(P<0.05)。恢复期病例sIL-2R水平,接近对照组。提示血清中sIL-2R水平的高低可作为疾病慢性化与否的一项辅助指标。说明sIL-2R水平的变化与肝损伤程度是一致的。 相似文献
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目的 研究肾病综合征患者可溶性白介素2受体(SIL—2R)变化及临床意义。方法36例肾病综合征患者及20例健康志愿者血、尿标本,用ELISA法检测其SIL-2R浓度。结果 肾病综合征发作期(252 ± 109u/ml,167 ± 80u/ml,n=22)血清及尿液SIL-2R浓度明显高于肾病综合征缓解期(12±26u/ml,101±46u/ml.n=14)及健康对照者(113±110u/ml,84±18u/ml,n=20,P< 0.01);肾病综合征缓解期和健康对照者无明显差中国差别(P>0.05)。血清 SIL-2R浓度和血肌酐浓度呈正相关(r=0.44,P<0.01)尿液SIL-2R浓度和尿蛋白是呈正相关(r=0.48,P< 0.01)。结论 SIL-2R浓度升高可作为肾病综合征活动及(或)肾功能恶化的指标。 相似文献
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目的观察高强度聚焦超声热疗前后造血系统恶性肿瘤患者血清可溶性白介素-2受体的变化及意义。方法采用双抗夹心ELISA法测定32例造血系统恶性肿瘤患者热疗前后血清可溶性白介素-2受体水平。结果热疗后患者血清可溶性白介素-2受体水平[(61.56±21.83)pmol/L]较治疗前[(100.75±39.12)pmol/L]显著降低(P<0.05)。结论高强度聚焦超声热疗后,造血系统恶性肿瘤患者血清可溶性白介素-2受体水平降低,可能表明造血系统恶性肿瘤患者免疫功能的改善。 相似文献
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乳腺癌组织中胰岛素样生长因子结合蛋白-2的表达及其与雌激素受体、孕激素受体相关性的研究 总被引:2,自引:1,他引:2
目的:研究胰岛素样生长因子结合蛋白-2(IGFBP-2)在乳腺癌组织中的表达,探讨其与乳腺癌临床病理学特征的关系及与雌激素受体(ER)、孕激素受体(PR)的相关性.方法:用免疫组织化学SP法检测42例乳腺癌患者肿瘤组织中IGFBP-2和ER、PR的表达水平.结果:在不同大小原发灶、年龄和类型乳腺癌组织中IGFBP-2的表达率无显著差异(P>0.05) ;IGFBP-2在有淋巴结转移乳腺癌中的表达显著高于无淋巴结转移乳腺癌(P<0.05).IGFBP-2与ER在乳腺癌中的表达呈中度正相关(P<0.01,rs=0.486);与PR在乳腺癌中表达无明显相关性 (P>0.05,rs=0.271).结论:IGFBP-2的表达在乳腺癌的发展和侵袭转移可能起重要作用,并与ER在乳腺癌中的表达呈正相关,提示IGFBP-2的高表达可能是乳腺癌预后不良的指标之一,对乳腺癌的临床治疗有一定的指导作用. 相似文献
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Background: We previously presented evidence showing that cyclo-oxygenase 2 (COX-2) plays an important role in mammary carcinogenesis and angiogenesis in human breast cancer. The present study aims to compare COX-2 mRNA expression with hormone receptor status, S-phase fraction, telomerase activity, and DNA ploidy in human breast cancer.Methods: Total cellular RNA was extracted from frozen breast tissue samples according to standard methodology. The mRNA copy numbers for COX-2 were determined in 18 infiltrating carcinomas using quantitative RT-PCR and TaqMan methodology. The oestrogen receptor (ER) and progesterone receptor (PgR) status was determined using the ligand-binding technique (ER+?=?>3?fmol/mg, PgR+?=?>5fmol/mg). We also determined DNA ploidy status (diploid or aneuploid), S-phase fraction (<6%?=?low, 6-10%?=?intermediate, > 10%?=?high), and telomerase activity (total protein generated by TRAP assay).Results: The median COX-2 mRNA copy number per ug of RNA was 126 713 (range?=?15717-2022050). COX-2 expression was significantly associated with PgR positivity (p?=?0.013). The association between COX-2 and DNA diploidy failed to reach a statistical significance (p?=?0.085). No significant association was detected between COX-2 and S-phase fraction, ER status, or telomerase activity.Conclusions: COX-2 mRNA expression is associated with PgR positivity in human breast cancer. This observation is consistent with the hypothesis that COX-2 upregulates aromatase activity. 相似文献
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Yong HE ;Xiao-mei YUAN ;Ping LEI ;Sha WU ;Wei XING ;Xiao-li LAN ;Hui-fen ZHU ;Tao HUANG ;Guo-bing WANG ;Rui AN ;Yong-xue ZHANG ;Guan-xin SHEN 《中国药理学报》2009,(7):1053-1059
Aim: Somatostatin receptor subtype 2 (SSTR2) is the principal mediator of somatostatin's (SST) antiproliferative effects on normal and cancer cells. Therefore, we investigated whether the enhanced expression of SSTR2 could inhibit the proliferation of tumor cells, and, if so, the mechanisms that might be involved.
Methods: SSTR2 expression levels were determined by qRToPCR in several tumor cell lines. Then, a plasmid plRES2-EGFP-SSTR2 (pSlG) was constructed and stably transfected into MCF-7 cells (MCF-7/pSIG). After SSTR2 overexpression was identified by qRT-PCR, immunofluorescence staining and a receptor binding assay, the MCF-7/pSIG cells were analyzed by PI staining for apoptosis and cell cycle arrest was tested by flow cytometry for epidermal growth factor receptor (EGFR) expression. The EGF-stimulated proliferation of MCF-7 cells was assayed by MTT.
Results: The human breast cancer cell line MCF-7 expresses a lower level of SSTR2, thereby partly accounting for the decreased response to SST. The overexpression of SSTR2 in MCF-7 cells resulted in apoptosis, cytostasis and G1/S cell cycle arrest. Furthermore the expression of EGFR, together with EGF-stimulated proliferation, was markedly decreased in the MCF-7/pSlG cells.
Conclusion: Enhanced SSTR2 expression played an antiproliferative role in MCF-7 cells through inducing apoptosis and G1/S cell cycle arrest, and also by decreasing EGFR expression, thereby counteracting the growth-stimulating effect of EGF. Our data seem to indicate that developing a new therapeutic agent capable of upregulating SSTR expression could potentially be a way to block tumor progression. 相似文献
Methods: SSTR2 expression levels were determined by qRToPCR in several tumor cell lines. Then, a plasmid plRES2-EGFP-SSTR2 (pSlG) was constructed and stably transfected into MCF-7 cells (MCF-7/pSIG). After SSTR2 overexpression was identified by qRT-PCR, immunofluorescence staining and a receptor binding assay, the MCF-7/pSIG cells were analyzed by PI staining for apoptosis and cell cycle arrest was tested by flow cytometry for epidermal growth factor receptor (EGFR) expression. The EGF-stimulated proliferation of MCF-7 cells was assayed by MTT.
Results: The human breast cancer cell line MCF-7 expresses a lower level of SSTR2, thereby partly accounting for the decreased response to SST. The overexpression of SSTR2 in MCF-7 cells resulted in apoptosis, cytostasis and G1/S cell cycle arrest. Furthermore the expression of EGFR, together with EGF-stimulated proliferation, was markedly decreased in the MCF-7/pSlG cells.
Conclusion: Enhanced SSTR2 expression played an antiproliferative role in MCF-7 cells through inducing apoptosis and G1/S cell cycle arrest, and also by decreasing EGFR expression, thereby counteracting the growth-stimulating effect of EGF. Our data seem to indicate that developing a new therapeutic agent capable of upregulating SSTR expression could potentially be a way to block tumor progression. 相似文献
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目的 :探索白细胞介素 6 (interleukin 6 ,IL 6 )增强乳腺癌细胞表达乳腺癌抗原 (CA15 3)和癌胚抗原 (CEA)的作用。方法 :将含IL 6蛋白编码顺序1176bpcDNA插入Pci neo哺乳动物表达载体。将重组载体转染MCF 7乳腺癌细胞 ,采用ELASA方法测定细胞培养上清液内IL 6浓度 ,用MEIA(microp articalenzymeimmunoassay)方法测定上清液中肿瘤相关抗原CA15 3、CEA和CA12 5。结果 :含有外源IL 6基因的MCF 7细胞分泌IL 6浓度 (338.5±2 2 .6pg·10 -6细胞 )明显高于父本没有含外源基因的MCF 7细胞 (2 5 .4± 4 .6pg·10 -6细胞 )和仅含空载体Pci neo的MCF 7细胞 (19.6± 3.0pg·10 -6细胞 ) (P<0 .0 1)。细胞培养d 3后 ,带外源IL 6基因的MCF 7细胞培养上清液中CA15 3和CA12 5水平 (分别为 14 .9± 2 .3和 38.8± 5 .1μg·10 -6细胞 )明显高于父本 (分别为 6 .6± 1.5和 10 .0± 1.6 μg·10 -6细胞 )和空载体Pci neo的MCF 7细胞 (分别为 3.4±0 .7和 14 .6± 2 .2 μg·10 -6细胞 ,P <0 .0 5 )。而转染IL 6基因没有明显改变CEA表达 (P >0 .0 5 )。结论 :IL 6具有诱导肿瘤相关抗原的表达和增强肿瘤细胞的免疫原性的作用 ,提示IL 6可能增强机体对肿瘤的免疫反应性。 相似文献
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目的:观察支气管哮喘(简称哮喘)控制期、未控制期患者及正常对照人群中外周血单个核细胞Toll样受体2(TLR2)mRNA表达及血清白细胞介素4(IL-4)、IL-12水平,并探讨上述指标间有无相关性。方法根据全球哮喘防治创议(GINA)2006哮喘控制水平分级标准,选取门诊急诊哮喘控制期及未控制期患者各20例,选取体检健康者20名作为正常对照组。采用逆转录聚合酶链反应( RT-PCR)法检测各组对象外周血单个核细胞TLR2 mRNA表达。用酶联免疫吸附测定( ELISA)双抗体夹心法检测各组对象血清IL-4、IL-12水平。结果哮喘患者外周血单个核细胞 TLR2 mRNA 的表达水平高于正常对照组[(0.963±0.132)比(0.632±0.172)],差异有统计学意义(P<0.01)。哮喘控制期与未控制期患者外周血单个核细胞TLR2 mRNA的表达水平差异无统计学意义[(0.936±0.117)比(0.991±0.147)]( P>0.05)。哮喘患者外周血IL-4水平高于正常对照组[(34.0±8.2)ng/L比(9.8±2.7)ng/L],差异有统计学意义(t=13.87,P<0.01),未控制组患者外周血IL-4水平高于哮喘控制组[(42.5±5.4)ng/L比(29.4±4.2)ng/L](t =8.53,P<0.01)。哮喘患者外周血 IL-12水平低于正常对照组[(29.4±3.9)ng/L 比(55.8±6.1)ng/L](t=20.54,P<0.01),哮喘控制组与未控制组患者外周血IL-12水平差异无统计学意义[(28.7±4.5)ng/L比(30.1±3.0)ng/L](t=-1.16,P>0.05)。哮喘患者外周血单个核细胞TLR2 mRNA表达与外周血IL-4水平呈正相关(r=0.532,P<0.01),与外周血IL-12无明显相关(r=-0.05,P>0.05)。结论哮喘患者外周血单核细胞TLR2 mRNA的表达水平高于正常对照,外周血IL-4水平高于正常对照,未控制期外周血IL-4水平高于控制期,外周血IL-12水平低于正常对照。哮喘患者外周? 相似文献
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H. Ian Robins Donna S. Neuberg Al B. Benson III Kishan J. Pandya Douglass C. Tormey 《Investigational new drugs》1990,8(4):397-399
Summary The Eastern Cooperative Oncology Group conducted a phase II study of lonidamine in patients with metastatic breast cancer. The drug was given orally to a maximum daily dose of 340 mg/m2. Forty-two patients were entered on study. One partial response was observed; there were no life-threatening toxicities. The results of this study are compared to two similar phase II trials.Other participating institutions include: Fox Chase Cancer Center, Philadelphia, PA (CA-18281); Medical College of Ohio, Toledo, OH; Rush-Presbyterian-St. Luke's Medical Center, Chicago, IL (CA-25988), Evanston Hospital (CCOP), Evanston, IL. 相似文献