Inhibitory Effect of Angiogenesis Inhibitor TNP—470 on Human ACHN Renal Cell Carcinoma

Angiogenesis,the formation of new bloodvessels,is necessary for the growth of tumors andtheir metastasis.TNP- 470 is a synthetic analogueof fumagillin and has stronger antiangiogenic　 ac-tivity and less side- effects than fumagillin.Thiscompound has been reported to suppress the prolif-eration and metastasis of various kinds of tu-mors[1] . Using nude mice xenografts of ACHN hu-man renal cell carcinoma ( RCC) ,the presentstudyattempted to examine the action of TNP- 470 ongrowth,metastasi…     

Clinical significance of technetium-99m methylene diphosphonate myocardial uptake: association with carcinoma of the prostate

Benign myocardial uptake of technetium-99m labelled phosphates, not related to cardiac or metabolic disorders, has been documented except in the case of^99mTc-methylene diphosphonate (MDP). The aim of this study was to assess the frequency of myocardial uptake and its possible association with malignant tumours in general and prostatic carcinoma in particular. We reviewed bone scintigrams performed with either^99mTc-hydroxydiphosphonate (HDP) or^99mTc-MDP over a period of more than 2 years for all patients with prostatic carcinoma and a matching group of patients suffering from other malignant and non-malignant disorders. A total of 965 scintigrams of 812 patients (males=559, females=253; age range 50–91 years, average age 69.2 years) were reviewed. Increased myocardial uptake was detected in 19 scintigrams (MDP=13, HDP=6) of 18 patients (17 males, one female). Most of the male patients with increased myocardial uptake had prostatic carcinoma (13/17) and were over 80 years of age (12/17). All patients were free of any cardiac or noncardiac disorder that might account for such uptake. When scintigraphy was repeated in the same patient, the uptake of^99mTc-HDP was more diffuse and of higher grade than that of^99mTc-MDP Benign myocardial uptake of^99mTc-MDP is more common than previously thought. Although uptake of radiophosphates is attributed to asymptomatic atherosclerotic changes associated with old age, a strong association with prostatic carcinoma exists which may indicate variations in the bone: soft tissue affinity of different MDP complexes.     

通过多元回归分析确定甲状腺癌的诊断程序

为制定甲状腺癌术前、术中诊断的严格程序, 减少其误诊误治。选择２７ 项观察指标, 采用Ｓｔａｔａ统计学软件, 对所有指标进行Ｌｏｇｉｓｔｉｃ逐步多元回归分析。单因素分析显示,１９ 项指标在甲状腺良恶疾病的表现中, 有显著性差异 （Ｐ＜ ０． ０５）; 多因素分析表明, ６ 项指标在判断甲状腺良恶性肿瘤作用中, 有显著意义（分析水平： α＝ ０．１）。最后据分析结果建立甲状腺癌的诊断程序。结果表明： ①术中明确诊断是非常重要的阶段。若发现肿块质地硬、与周围组织粘连、肿瘤数目多于一个, 以及肿块是混合性或实质性, 应考虑恶性可能; ②术前仔细体检及综合分析有关辅助检查结果, 将有助于明确诊断。尤其当肿块质地较硬且位于右侧甲状腺时, 须格外注意     

手术加皮下埋藏腹腔化疗泵联合化疗治疗晚期上皮性卵巢癌的疗效观察

目的：对晚期上皮性卵巢癌患者行手术及术中皮下埋藏腹腔化疗泵联合化疗，并对其疗效进行评价，以期对治疗提供帮助。方法：1995年8月～1997年8月收治的卵巢癌患者中24例行手术及术中皮下埋藏化疗泵，术后采用CAP方案联合化疗。顺铂50～70mg／m^2腹腔灌注，阿霉素40～60mg／m^2、环磷酰胺600～800mg／m^2静脉注射，平均4～5周为一疗程，总疗程6～12个。结果：Ⅲ期患者总有效率为77．8％；3年生存率50．0％，5年生存率25．0％。结论：彻底的手术加腹腔泵灌注腹腔化疗及静脉化疗是治疗晚期上皮性卵巢癌的有效途径，可提高患者的生活质量及生存率。     

胰腺癌CT临床分析(附31例报告)

对31例胰腺癌和其它胰腺病变术前CT误诊和漏诊病例进行回顾性分析。结果误诊25例，其误诊率为44．0％（11／25）。主要原因：一是CT表现不典型；二是对某些CT征象认识不足以及分析欠全面。漏诊6例，主要为胰头部直径≤3cm的小胰头癌。通过对误诊、漏诊原因的分析，作者认为，改进检查技术，如采用薄层连续动态CT扫描，结合临床资料对CT征象作全面分析及综合多种影像学方法优势，可减少误诊、温沙机率。     

维甲酸受体β在膀胱移行细胞癌中的表达及意义

目的检测维甲酸受体β（RARβ）在膀胱移行细胞癌中的表达，并探讨其意义。方法应用免疫组织化学方法对80例膀胱移行细胞癌组织标本中RARβ表达进行检测：男56例，女24例。病理分级Ⅰ级26例，Ⅱ级22例，Ⅲ级32例，临床分期T1 20例、T2 20例、T3 22例、T4 18例。复发性膀胱癌46例。10例正常膀胱组织作对照。结果10例正常膀胱黏膜组织中RARβ均为强阳性。80例膀胱移行细胞癌中RARβ阳性表达28例，阳性率为35．0％。RARβ表达与膀胱移行细胞癌病理分级、临床分期以及复发密切相关（P〈0．05）。结论RARβ在膀胱移行细胞癌组织中存在表达缺失，其表达缺失程度与肿瘤病理分级、临床分期及复发相关，可作为观察膀胱移行细胞癌复发指标之一。     

舒林酸抑制肝癌HepG2细胞增殖的实验研究

目的:观察舒林酸对肝癌HepG2细胞增殖的影响,探讨其作用机制。方法:采用MTT比色法观察舒林酸抑制肝癌HepG2细胞增殖;采用流式细胞仪检测舒林酸对HepG2细胞周期分布的影响,同时结合透射电子显微镜及DNA凝胶电泳观察舒林酸诱导肝癌HepG2细胞凋亡的作用。结果:舒林酸可抑制肝癌HepG2细胞的增殖,其作用具有时间和浓度依赖性(n=24),r24h=0·914,P=0·037;r48h=0·921,P=0·041;r72h=0·907,P=0·028;诱导其凋亡,作用24h,对照组凋亡率为(1·5±0·3)%,3×10-4组凋亡率为(8·6±1·3)%,9×10-4组凋亡率为(27·0±1·7)%,P值分别为0·018和0·000;作用48h,对照组凋亡率为(2·8±0·7)%,3×10-4组凋亡率为(13·2±2·3)%,9×10-4组凋亡率为(37·1±2·9)%,P值分别为0·012和0·000。舒林酸改变细胞周期分布,使G0/G1期细胞比例增高,S期比例降低。作用24h与对照比较,3×10-4处理组P=0·048,9×10-4处理组P=0·037,两组间比较P=0·041;作用48h与对照比,3×10-4处理组P=0·040,9×10-4处理组P=0·032,两组间比较P=0·044。结论:舒林酸可诱导肝癌HepG2细胞凋亡,改变细胞周期分布,从而抑制细胞增殖。     

吸烟、饮酒、体质量指数和食管鳞状细胞癌发病风险分析

目的探讨吸烟、饮酒、体重指数与食管鳞状细胞癌(esophageal squamous carcinoma,ESCC)发病风险的关系。方法采用流行病学调查的病例-对照研究方法,病例组4 229例均经组织病理学确诊,对照组4 133例均经内镜检查排除了早期ESCC和其他上消化道肿瘤,全部调查资料输入EXCEL表中,进行统计分析。结果吸烟、饮酒与ESCC发生无明显关联;经性别、诊断年龄、高低发区、家族史等因素调整后Logistic回归分析表明,低体重(I级BMI)人群ESCC发病风险高于正常体重者(II级BMI)(P<0.05,OR=4.87,95%CI=4.09～5.82);超重及肥胖(III+IV级BMI)人群ESCC的发病风险低于正常体重者(II级BMI)(P<0.05,OR=0.32,95%CI=0.28～0.37)。结论 ESCC的发生与吸烟、饮酒无关,与体重指数有关,低体重可能增加ESCC患病风险。     

肝细胞生长因子及受体、XIAP在卵巢癌组织中的表达及相关关系的探讨

目的探讨肝细胞生长因子及受体（HGF、c=Met）、XIAP基因在卵巢癌中的表达及相关关系。方法采用EnVision免疫组织化学法检测在30例卵巢癌组织中HGF、c-Met及XIAP的表达情况。结果HGF、c-Met、XIAP的表达与临床分期有关（P=0．000、P=0．001、P=0．008），HGF、C—Met、XIAP的表达与年龄、病理分型、淋巴转移均无明显相关性；HGF与XIAP呈正相关（r=0．853，P=0．000）。结论HGF、c—Met与XIAP在卵巢癌组织中呈高表达，HGF与XIAP呈正相关，可作为卵巢癌早期临床诊断的参考指标。     

Coexistence of Papillary and Nodular Carcinomas in the Urinary Bladder

Of 203 patients with transitional cell carcinoma of the urinarybladder which had been cystectomized and examined by step-sectioningduring the period between 1969 and 1986, 33 had coexistent papillary,papDlonodular and/or nodular carcinomas in the bladder. Of them,12 (36%) had a history of papillary carcinomas, 26 (79%) hadmultiple rumors and 22 (67%) had a concomitant carcinoma insitu, and/or mucosal dysplasia. Moreover, microscopic papillarystructures were identified in 32 out of the 33 (97%) cases withpapillonodular and/or nodular carcinomas, indicating some ofthe nodular invasive carcinomas in the bladder to have developedfrom papillary carcinomas.