胃癌患者血清NO、细胞因子和红细胞免疫功能的测定及其意义

目的　研究胃癌发病的免疫学机制。方法　应用形态学方法测定胃癌患者RBC C3bRR、RBC ICR及NTER ;用ELISA法测定血清TNF α、IL 6和IL 8含量 ;用生化方法测定血清NO含量。结果　胃癌患者血清NO含量 ,RBC C3bRR和NTER明显降低 (P均 <0 .0 5) ,术后较术前明显升高 (P均 <0 .0 5) ,但仍低于对照组 (P均 <0 .0 5)。血清TNF α、IL 6、IL 8含量及RBC ICR明显增高 (P均 <0 .0 5) ,术后血清IL 6、IL 8含量及RBC ICR较术前明显降低(P均 <0 .0 5) ,但仍高于对照组 (P均 <0 .0 5)。胃癌患者TNF α、IL 6、IL 8间呈正相关 ,RBC C3bRR与血清IL 6、IL 8含量呈负相关。结论　多项免疫指标的联合检测对揭示胃癌的发病机理、疗效观察和预后判断均有重要的临床意义     

血清和支气管肺泡灌洗液中癌胚抗原及透明质酸测定对肺癌的诊断意义

应用放免法测定了７４例肺癌和７６例良性肺病患者血清（Ｓ）和支气管肺泡灌洗液（ＢＡＬＦ）中癌胚抗原（ＣＥＡ）及透明质酸（ＨＡ），同时测定了５８例健康人Ｓ－ＨＡ。结果显示：肺癌患者Ｓ－ＣＥＡ极显著高于良性肺病患者（Ｐ＜０．００１），肺癌患者Ｓ－ＨＡ极显著高于健康人和良性肺病患者（Ｐ均＜０．００１）。肺癌患侧ＢＡＬＦ－ＣＥＡ和ＢＡＬＦ－ＨＡ极显著高于肺癌健侧、良性肺病患侧和健侧（Ｐ＜０．００１或Ｐ＜０．００２）。根据各项指标在肺癌时的阳性率，选用Ｓ－ＣＥＡ、ＢＡＬＦ－ＣＥＡ和ＢＡＬＦ－ＨＡ作为诊断指标，当３项阳性时对肺癌诊断的敏感性为５３％，特异性为９７％、阳性预示值为９５％，用性预示值为７６％，准确性为７２％。     

THE STUDY OF MICROSATELLITES ALTERATION IN DIAGNOSES OF BLADDER CANCER

Objective To investigate the possibility of microsatellite alteration （MA） in diagnosis of bladder cancer of Chinese people, and find the better panel which will be used in clinic. Methods A total of 6 and 10 microsatellite markers were chosen, PCR-SSLP silver staining assay was performed in 31 and 32 bladder cancers tissue, exfoliate cells in urine and 10, 15 non-bladder cancers exfoliate cells in urine, respectively. Results MA （＋） was found in 28 out of 31, 30 out of 32 bladder cancers, and the sensitivity was 90. 3%, 93.7% respectively. The MA of urine sediment of 25 non-bladder cancers was negative, and the specificity was 100%. The cytology was carried out among 19 out of 31, 20 out of 32 bladder cancers at the same time, 2 cases （10.3%） and 3 cases （15%） were found cancer positive, and the sensitivity is significantly lower than that by the analysis of MA in exfoliated cells. Conclusion MA was not associated with grade and stage of the bladder cancer. MA assay is a sensitive and effective method for the early detection of bladder cancer and post-operation surveillance.     

siRNA AGAINST SURVIVIN SUPPRESSES THE PROLIFERATION OF PANCREATIC CANCER CELL PC-2 AND INDUCES ITS APOPTOSIS

Survivinis a member of the inhibitor of apop-tosis family,whichinhibits cell apoptosis and regu-lates cell division.Survivin is expressed in embry-onic tissues as well as in the majority of humancancers,but is not expressed in most nor mal adulttissues.The highly cancer-specific expression ofSurvivin,coupled withits i mportance in inhibitingcell apoptosis and in regulating cell division,makesit a useful diagnostic marker and ideal target forcancer treat ment[1].RNAi is a process of post trans…     

THE CLINICAL SIGNIFICANCE OF PERCENT FREE PSA IN DIFFERENTIATING PROSTATE CANCER AND BENIGN PROSTATE HYPERPLASIA

rostatecancer (Pca)isoneofthecommonestmalignanttumorsofmaleinEuropeandAmerica .ThemorbidityofPcainourcountryismuchlowerthaninothercountries,butrecentlyitwasincreasedtotwofold[1] .Althoughtheprostatespecificantigen(PSA)isthemostusefultumormarkeravailableforthediagnosisofPca ,nevertheless ,lackssufficientsensitivityandspecificity .Peoplenow putforwardtheconceptofpercentfreePSA (fPSA)andhasbe comethenewdirectionofinvestigation .However ,therestillhavesomeproblemunclearatpresent,es peciallyt…     

胃癌中内分泌细胞及其意义

应用免疫组化ABC法对48例胃癌进行胃泌素、生长抑素、胰高血糖素标记。结果胃泌素阳性14例（29．2％），生长抑素阳性9例（18．7％），两者均阳性者6例（12．5％）。未分化腺癌中内分泌细胞阳性率较高分化腺癌高。胃泌素阳性组其浆膜浸润率13／14例（92．9％），淋巴结转移率11／14例（78．5％），明显高于阴性组（P<0.01）。生长抑素阳性组浆膜浸润率6／9例（66．7％），淋巴结转移率4／9例（44．4％），与阴性组相比均无明显差异（P＞0．05），提示胃泌素有促进癌细胞生长的作用，癌细胞生长愈活跃，其侵袭能力愈强，转移率愈高。     

SCC-Ag、CEA在肺癌患者血清中的表达及临床意义

目的　探讨肺癌患者治疗前后血清鳞状细胞癌抗原 (SCC Ag)和癌胚抗原 (CEA)的表达及临床意义。方法　利用全自动快速粒子酶免疫分析系统 (IMX) ,检测 134例肺癌患者治疗前后血清SCC Ag和CEA的水平 ,分析SCC Ag和CEA检测值与肺癌临床病理特征之间的关系。结果　肺癌患者治疗前血清SCC Ag、CEA升高与肿瘤病理学类型和临床分期呈正相关 (P <0 .0 5 ) ,联合检测可以提高肺癌诊断的阳性率。结论　血清SCC Ag、CEA检测可用于肺癌的辅助诊断以及对病期和预后的判断。     

雌、孕激素受体和rasP~(21)蛋白的表达在乳腺癌预后中的意义

用酶联亲合组化法和ABC免疫组化法对93例乳腺癌石蜡标本中雌激素受体(ER)、孕激素受体(PR)和ras P~(21)蛋白进行了检测和对比研究。经果表明:ER、PR阳性率分别为64.52％和60.22％,经随访5年累积无瘤生存率阳性组高于阴性组(P<0.05);P~(21)蛋白的阳性表达率为52.69％,多出现在分化差的Ⅱ、Ⅲ级具有浸润性的乳腺癌组织中,随乳腺癌组织学分级的增加而增强,与ER水平呈负相关,5年累积无瘤生存率阴性组高于阳性组(P<0.05)。认为P~(21)蛋白表达的强弱同ER、PR一样反映了乳腺癌的生物学特性及预后。     

胃癌细胞株SGC-7901及MGC-803中SURVIVIN基因转录与表达的鉴定

目的　探讨胃腺癌细胞株SGC 790 1及MGC 80 3中survivin基因转录与表达情况 ,为胃癌与survivin基因的相关研究提供帮助。方法　①利用反转录聚合酶链反应 (RT PCR)及DNA序列测定技术检测两种细胞株中survivin基因mRNA转录情况。②采用免疫组织化学染色鉴定两种细胞株survivin基因有无蛋白表达及其表达程度。结果　从提取的胃癌细胞总RNA中扩增出 6 12bp的DNA片段 ,与预期的扩增片段大小相符 ;序列测定显示两细胞株的DNA扩增片段序列与基因库survivin基因mRNA序列完全一致 ;免疫组织化学染色显示两细胞株中均有survivin蛋白表达产物。结论　中国人胃腺癌细胞株SGC 790 1及MGC 80 3中均存在survivin基因的mRNA转录及蛋白的高表达     

A STUDY OF ADHESIVE MOLECULE CD_(44S)CD_(44V) VARIANT EXPRESSION IN GASTRIC CARCINOMA WITH RT-PCR

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