AN IMMUNOHISTOCHEMICAL STUDY ON EXPRESSION OF CD44v6 PROTEIN IN HUMAN GALLBLADDER CARCINOMA

ＣＤ4 4ｖ6 ｐｒｏｔｅｉｎｉｓａｃｅｌｌａｄｈｅｓｉｏｎｍｏｌｅｃｕｌｅｅｘ ｐｒｅｓｓｉｎｇｏｎｔｈｅｃｅｌｌｓｕｒｆａｃｅ .Ｒｅｃｅｎｔｌｙ ,ｍａｎｙｓｃｈｏｌａｒｓｎｏｔｉｃｅｄｔｈｅｒｅｌａｔｉｏｎｂｅｔｗｅｅｎＣＤ4 4ｖ6ｅｘｐｒｅｓｓｉｏｎａｎｄｎｅｏｐｌａｓｍｄｅｖｅｌｏｐｍｅｎｔａｓｗｅｌｌａｓｐｒｏｇｒｅｓｓ ,ｂｕｔｔｈｅｒｅ ｐｏｒｔｓａｂｏｕｔｔｈａｔａｒｅｓｃａｒｃｅｉｎＧＢＣ .ＩｎｏｒｄｅｒｔｏｓｔｕｄｙｔｈｅｃｌｉｎｉｃｓｉｇｎｉｆｉｃａｎｃｅｓｏｆＣＤ4 4ｖ6ｅｘｐｒｅｓ…     

RESEARCH OF NUTRITIONAL AND IMMUNE STATUS IN PATIENTS WITH GALLBLADDER CARCINOMA RADICAL CHOLECYSTECTOMY

RESEARCH OF NUTRITIONAL AND IMMUNE STATUS IN PATIENTS WITH GALLBLADDER CARCINOMA RADICAL CHOLECYSTECTOMY@何平 @石景森 @陈武科 @任宏 @张一力$西安工业学院校医院~~     

肺癌TNF-α的表达及其意义

目的 探讨TNF-α基因在肺癌组织中的表达及其临床意义。方法 应用免疫组化SP法检测40例肺癌组织中肿瘤坏死因子(Tumor necrosis factor,TNF-α)的表达,并与癌旁正常肺组织对照。结果 TNF-α阳性表达主要分布于癌细胞胞浆中,阳性率为47..5%(19/40),细胞核内无阳性表达;癌旁正常肺组织内无阳性表达(P＜0..05)。结论 TNF-α与肺癌的发生、发展有着密切关系。     

体外非接触共培养诱导骨髓间充质干细胞向肺泡上皮细胞的分化

目的 建立体外非接触共培养模型,诱导小鼠骨髓间充质干细胞(MSCs)向肺泡上皮细胞的分化.方法 分三组,每组6例.对照组:小鼠MSCs单独培养组;实验组A:正常肺组织单细胞悬液+MSCs;实验组B:损伤肺组织单细胞悬液+MSCs.共同培养8d,激光共聚焦和RT-PCR检测共培养体系下室中的SP-C和AQP5的表达情况.结果 对照组和实验组A都只检测到AQP5;而实验组B可同时检测到AQP5和SP-C.实验组B的AQP5 mRNA的表达量较对照组明显增多(P<0.01),而与实验组A比较,其AQP5 mRNA的表达量也有统计学差异(P<0.01).但是,实验组A与对照组比较则无明显统计学差异(P>0.05).结论 本实验室成功建立了体外非接触诱导小鼠MSCs分化为肺泡上皮细胞的实验模型.     

Identification of serum biomarkers for diagnosing stage I lung adenocarcinoma by MALDI-TOF mass spectrometry

Objectire To identify specific biomarkers that could improve early diagnsis of lung adenuearcinoma using matrix-assisted laser desorptian/ionization (MALDI) technology. Methods Serum samples were isolated from 17 patients with stage I lung adenuearcinoma and 17 age- and sex-matched healthy controls, and the serum proteomic profiles were obtained by matrix-assistcd laser desorption ionization time of flight (MALDI-TOF) mass spectrometry. Results Compared with healthy control group, two highly expressed potential biomarkers were identified with the relative molecular weights of 6 631.64 Da and 4 964. 21 Da. The two best novel protein peaks were automatically chosen for the system training and the development of the constructed model. The constructed model was then used to test an independent set of masked serum samples from 15 lung adenocarcinoma patients and 22 healthy individuals. The analysis yielded a sensitivity of 93.3 %, and a specificity of 95.5 %. Conclusion These results suggest that MALDI-TOF-MS ProteinChip technology is a quick, convenient, and high-output analyzing method that is capable of selecting several relatively potential biomarkers from the serum of lung adenocarcinoma patients and may have a clinical value in the future, and will provide clues to identifying new serologic btomarkers of lung adenocarcinoma.     

肺癌早期诊断的现状、困惑和希望

肺癌是目前世界范围内发病率和死亡率最高的恶性肿瘤.早期诊断是改善其预后的关键.由于肺癌在临床和病理学方面均表现出明显的异质性,故缺乏理想的早期诊断措施.本文介绍了肺癌早期诊断的现状、进展和存在的问题,探讨了今后研究的方向.     

~(99)Tc~m-HL91在肺部肿瘤诊断中的临床价值

目的　应用99Tcm HL91进行肺部肿瘤阳性显像 ,探讨其在肿瘤良恶性诊断中的临床应用价值。方法　对 42例高度怀疑肺部肿瘤的患者注射99Tcm HL91后行 2h、4h平面显像及 4hSPECT/CT断层融合显像 ,使用ROI技术计算肿块与对侧正常肺组织的比值 (T/N)。结果　恶性组在 2h、4h平面及 4h断层图像上T/N值分别为 1.50±0 .17、1.71± 0 .2 2、2 .72± 0 .75,良性病变组分别为 1.2 1± 0 .10、1.2 5± 0 .2 2、1.49± 0 .3 6,各组间均有显著性差异 (P均 <0 .0 1) ;恶性组 4h延迟平面像组较 2h组T/N比值明显增高 (P <0 .0 1) ,而良性组无明显增高 (P >0 .0 5) ;各病理类型各时相之间无显著性差异 (P <0 .0 5) ;以恶性组横断层T/N值 x -1s为诊断阈值 ,其诊断灵敏度、特异度、准确性分别为 84.85%、88.89%和 85.71% ;以良性组 x + 1s为诊断阈值 ,灵敏度、特异度及准确性分别为 90 .91%、88.89%和 95.2 4%。结论　99Tcm HL91作为一种肿瘤阳性显像剂 ,对肺部肿瘤的定性诊断具有较高价值     

Research on pharmacokinetics of high-dose tamoxifen in non-small cell lung cancer patients

Objective To study the pharmacokinetics of tamoxifen at a high dosage, which will offer a theoretical support for an appropriate clinical use of the medicine in non-small cell lung cancer （NSCLC） patients. Methods Three qualified NSCLC patients are selected and given tamoxifen （TAM） 160 mg per Os. Blood samples were collected at different times and then analyzed by high-performance liguid chromatography. The PK-GRAPH program was used to obtain the parameters. Results The concentration-time courses of the TAM 160 mg were fitted to one-compartment model. The pharmacokinetic parameters were estimated as follows： Tmax （6. 35±1. 24）h, Cmax （217. 39±7. 71）ng/mL, AUC （12 127.39±636.16）ng · h/mL and T1/2ke（34. 13±2.97）h. Conclusion TAM 160mg one day per Os cannot reach the effective maintenance concentration in vivo required for reversing MDR in vitro. Loading-maintenance dose strategy is recommended to study the pharmacodynamies of tamoxifen at a high dosage in NSCLC patients.     

DIAGNOSTIC VALUE OF SERUM PROGRP31-98 IN PATIENTS WITH SMALL-CELL LUNG CANCER

Small celllungcancer (SCLC )isasubtyperepresentingapproximately 15 %to 2 0 %ofallpri marylungcarcinomaoccurringinChina .Ingener al,SCLCishighlysensitivetochemotherapyandhasafrequenttendencytometastasizeatanearlystage .Thus ,itisveryimportanttomakeanearlydiagnosisforthetreatmentofSCLC patients .NSEhaslongtermbeenusedasSCLCearlydiagnosismarkerinclinic[1] .However ,therelativelyhighfalse positiveratehasforcedthedoctorstolookforthemorespecificandsensitivemarker[2 ] .SincePro gastrin relea…     

P~（53）蛋白在人脑星形胶质细胞瘤中的表达及意义

采用免疫组化法对５０例人脑星形胶质细胞瘤组织中Ｐ５３蛋白的表达，及其与肿瘤临床病理学特征和预后的关系作了分析，结果显示：本组５０例中２２例表达阳性，阳性率占４４％，Ｐ５３蛋白主要分布在细胞核内，正常脑组织Ｐ５３蛋白表达均为阴性，且肿瘤分化程度越差，预后不良者其阳性染色愈强烈，提示Ｐ５３基因及其蛋白与人脑星形胶质细胞瘤的发生、发展密切相关，可做为判定脑肿瘤恶性程度和预后的重要指标。