人前列腺癌细胞PC-3M亚系u-PAR基因表达的分析

目的 为研究与人前列腺癌细胞(PC-3M)侵袭能力相关的靶分子。方法 采用有限稀释法分离单克隆细胞株，并应用单层细胞侵袭等实验鉴定各亚系的体外侵袭能力；借助RT-PCR和免疫组化的方法，分别在转录和翻译水平检测5株侵袭能力不同的PC-3M亚系尿激酶型纤溶酶原激活物受体(u-PAR)的表达。结果 高侵袭亚系u-PAR基因mRNA的表达和蛋白质水平均明显高于低侵袭亚系。结论 PC-3M亚系u-PAR的高表达与其较强的侵袭能力密切相关，而u-PAR可能是抑制高侵袭亚系侵袭效应的一个重要靶分子。     

全盆四野加速超分割放射治疗Ⅲb期子宫颈鳞癌的临床研究

探讨全盆四野加速超分割放射治疗晚期子宫颈癌的临床价值。方法:于1998年1月至1999年10月分别采用全盆二野常规分割标准方案(CF组,18例)和全盆四野加速超分割方案(AHF组,17例),治疗Ⅲb期子宫颈鳞癌,对放射不良反应和治疗效果进行临床比较研究。结果:1)AHF组全疗程平均40.1天完成,CF组平均57.3天完成,AHF组疗程显著短于CF组(P<0.01);2)AHF组2、3年生存率分别为88.2%、82.4%,CF组分别为83.3%、72.2%,前者有提高生存率的趋势,但差异无统计学意义(P>0.05);3)AHF组3年局部控制率(94.1%)高于CF组(77.8%),AHF组有提高肿瘤局部控制率的趋势,但两组差异无统计学意义(P>0.05);4)近期放疗反应两组第一位均为直肠反应,其次是膀胱反应,差异无统计学意义(P>0.05);远期放疗反应第一位为照射野皮下纤维化,AHF组发生率(5.9%)显著低于CF组(72.2%)(P<0.01),两组直肠、膀胱反应发生率差异均无统计学意义(P>0.05)。结论:当采用60Co体外照射时,全盆四野加速超分割方案与常规分割标准方案比较,有提高ⅢΒ期子宫颈鳞癌生存率及局部控制率的趋势,具有总疗程明显缩短,不增加近期放疗不良反应,可显著减少远期照射野皮下纤维化的发生等优点,值得推广。     

Mouse mammary tumor virus-like gene sequences in breast tumors of Australian and Vietnamese women.

PURPOSE: There is considerable evidence that the presence of mouse mammary tumor virus (MMTV)-like gene sequences in human breast cancer is highly associated with human breast carcinoma. Previous studies have found MMTV-like gene sequences in 38% of breast cancer tissue from United States women. The prevalence of these sequences in Australian and Vietnamese women has never been reported. EXPERIMENTAL DESIGN: Using PCR and primers that amplify MMTV-like gene sequences, we tested cancerous and benign breast tissue from Caucasian-Australian, Vietnamese-Australian, and Vietnamese women. RESULTS: MMTV-like gene sequences were amplified in 19 of 45 (42.2%) archival breast cancer biopsy tissues from Caucasian-Australian women, but only 1 of 120 (0.8%) and 0 of 41 breast cancer biopsy tissues from Vietnamese and Vietnamese-Australian women, respectively. The same sequences were found in only 2 of 111 (1.8%) and 0 of 60 normal (benign) breast tissue samples from Australian and Vietnamese women, respectively. CONCLUSIONS: MMTV-like gene sequences are found in only some human populations and are rarely found in normal human breast tissue from all populations, suggesting they are not present in the normal human genome and have been acquired.     

HPLC法测定清热除湿合剂中黄芩苷的含量

目的:建立HPLC法测定清热除湿合剂中黄芩苷的含量。方法:用Supelcosil LC-18-DB(4.6mm×150 mm,5 μm)色谱柱,流动相:甲醇-水-磷酸溶液(48:52:0.2),流速1.0ml·min-1,检测波长280 nm。结果:黄芩苷在0.237～9.472μg范围内与峰面积线性关系良好,回归方程为A=1.332×104 1.456×105C(r=0.999 9,n=7),平均加样回收率为100.48%,RSD为1.06%。结论:本法测定简便,结果准确,重现性和分离度好,可用于清热除湿合剂的质量控制。     

前列腺癌的诊断(附159例分析)

回顾性分析18年间159例前列腺癌的诊断结果，其发病率近9年明显增高。发病率与年龄是正相关。直肠指诊（DRE）诊断阳性率为72．96％（116／159），经腹B超69．23％（18／26），CT90．32％（28／31），ACP45．71％（32／70），PSA85．92％（61／71），穿刺活检89．32％（92／103）。作者建议：DRE、PSA可作为60岁以上男性排尿困难患者的常规检查，期望早期检出前列腺癌。     

血管内皮生长因子及其受体对喉癌细胞生长的影响

为探讨血管内皮生长因子（ＶＥＧＦ）在喉癌中的作用及可能的作用方式，用抗ＶＥＧＦ抗体及其受体ｆｌｔ抗体通过微波处理暴露抗原后，进行标准化的ＥｌｉｔｅＡＢＣ染色；将不同浓度的抗ＶＥＧＦ及抗ｆｌｔ抗体分别加入ＨＥＰ－２细胞的培养液中，培养５ｄ后测ＨＥＰ－２细胞的活性（ＭＴＴ法）。结果：免疫组化染色显示ＶＥＧＦ及其受体ｆｌｔ主要在喉癌细胞和血管内皮细胞表达；不同浓度的ＶＥＧＦ抗体及抗ｆｌｔ抗体对ＨＥＰ－２     

中耳粘连手术治疗的疗效观察

中耳粘连是耳外科治疗的难题之一.为总结20年来手术治疗的体会和教训,对105例(129耳)的治疗情况进行了回顾性分析.对中耳粘连进行了分类,表明选择正确的手术方式有助于听力的改善;亦表明异物作为隔离物是不可取的;要进一步提高手术疗效尚有待进一步的探讨.     

筛窦开放后鼻甲外移开窗的临床及CT观察

OBJECTIVE: To assess the effect of middle turbinate (MT) and ethmoidal internal wall(EIW) moved externally after microsurgery. METHODS: Twenty-four cases (45 sides) were followed-up endoscopically for (16.3 +/- 9.3) months. Thirteen cases (24 sides) were observed by CT scans. Three cadaver heads were measured for anatomical analysis. RESULTS: Forty-one (91%) of 45 sides obtained better olfactory function after operation. Twenty-two (91%) of 24 sides were found to have better CT changes in sinus ventilation as compared with preoperative CT scans. The gap between the MT and EIW to the orbital wall was (12.0 +/- 1.0) mm, while that between the ethmoidal bulla and processus uncinatus was only (2.3 +/- 0.6) mm as revealed in the autopsy. CONCLUSION: MT and EIW moderately moved suitably to externally had no bad effect on sinus ventilation, and it improved olfaction.