Ets-1、MMP-1及TIMP-1在膀胱移行细胞癌中的表达

目的研究Ets-1、基质金属蛋白酶1(MMP-1)及基质金属蛋白酶1抑制物(TIMP-1)在膀胱移行细胞癌(BTCC)中的表达及意义。方法用免疫组化方法检测40例BTCC组织和12例正常膀胱黏膜组织中Ets-1、MMP-1及TIMP-1的表达;分析Ets-1与BTCC临床病理特征间的关系;研究BTCC中MMP-1、TIMP-1表达与Ets-1表达的相关性。结果①Ets-1在BTCC中高度表达,阳性率为82.5%(P<0.01),且随BTCC临床分期和病理分级的升高而增加,肿瘤复发组高于无复发组,肿瘤转移组高于无转移组(P<0.05)。②MMP-1阳性表达率膀胱癌组(85.0%)明显高于对照组(58.3%)(p<0.05);TIMP-1阳性表达率对照组(83.3%)明显高于膀胱癌组(47.5%)(P<0.05)。③MMP-1与Ets-1表达呈正相关(Rs为0.824,P<0.01),而TIMP-1与Ets-1表达呈负相关(Rs为-0.821,P<0.01)。结论①Ets-1在BTCC中高度表达,并随BTCC分期分级升高而增加;Ets-1与BTCC转移及复发密切相关。②BTCC中Ets-1上调MMP-1表达,而下调TIMP-1表达,从而参与BTCC侵袭与转移。     

Predictors of long-term survival in patients with gallbladder cancer

The aim of this study was to examine the predictors of long-term survival (>24 months) in patients with gall bladder cancer. A retrospective review of 117 cases of gall bladder cancer resected between 1989 and 2000. The resections included 80 simple cholecystectomies and 37 extended procedures. Patients with survival >24 months (n=44) were compared with those having survival <24 months (n=73) for 17 prognostic factors. Overall median survival was 16 months with a 5-year survival of 27%. T status (P=.000) and adjuvant chemoradiotherapy (P=.001) were independent predictors of long-term survival. Survival advantage was seen in T3N+ve disease (P=.007) with extended procedures. Complete (R0) resection was attained in 30 patients with a 5-year survival advantage of 30% as compared with incomplete (R1) resection (P=.0002). Adjuvant chemoradiotherapy improved survival in simple cholecystectomy group (P=.0008) but no advantage was seen after extended procedures. Stage III (P=.001) and node-positive disease (P=.0005) had significant benefit with adjuvant therapy. Poor differentiation and vascular invasion were associated with poor long-term survival. R0 resection was associated with prolonged survival. Extended procedures improved survival in patients with T3N+ve disease. Addition of chemoradiotherapy made significant improvement in long-term survival in stage III and node-positive lesions and in patients undergoing simple cholecystectomy. R0 resection predicted long-term survival in gall bladder cancer. T3 N+ve disease had better survival after extended procedures. Adjuvant chemoradiotherapy improved survival in stage III and node-positive disease. Poor differentiation and vascular invasion were adverse predictors of survival.     

PTEN及Bcl-2蛋白在膀胱移行细胞癌中的表达及其意义

目的：探讨PTEN及Bcl-2蛋白在膀胱移行细胞癌的表达规律及其临床意义。方法：应用免疫组织化学链亲和素-生物素-霉复合物（SP）方法检测43例膀胱移行细胞癌和7例正常黏膜组织中PTEN及Bcl-2蛋白的表达．分析二者的表达与膀胱癌病理参数的关系。结果：（1）G1、G2、G3肿瘤PTEN表达阳性率分别为85．7％、80．4％、73．3％，浸润性肿瘤和表浅性肿瘤表达阳性率分别为70．4％和93．8％，说明PTEN表达阳性率与肿瘤病理分级、临床分期有关。（2）G。、G2、G3肿瘤Bcl-2表达阳性率分别为14．2％、57．14％、66．67％，浸润性肿瘤和表浅性肿瘤表达阳性率分别为59．3％和43．8％，说明Bcl-2表达阳性率与肿瘤病理分级、临床分期有关。（3）随着肿瘤恶性程度的增高和临床分期进展，PTEN蛋白阳性率呈下降，Bcl-2表达呈增高趋势，二者表达呈负相关关系。结论：PTEN的抑癌作用可能与Bcl-2有关．二者的异常表达在膀胱移行细胞癌的发生、发展过程中起重要作用。二者同时检测有助于判断预后。     

Primary malignant melanoma of the bladder

Primary malignant melanomma of bladder is extremely rare: 18 cases are reported to date. An 82 year-old man underwent trans-urethral resection of bladder for a bleeding tumor of the posterior wall. Histological diagnosis was melanoma of the bladder. There was no history of previous or regressed cutaneous malignant melanoma. Margins of the bladder lesion contained atypical melanocytes similar to those commonly seen in the periphery of primary mucous membrane lesions. Clinical studies and radiological examinations were negative for other primary site of melanoma. The patient had a bladder recurrence that was consistent with primary tumor and died of widespread disease 9 months after diagnosis.     

Gastrointestinal stromal tumor in ileal neobladder

Abstract  Gastrointestinal stromal tumor (GIST) is a recently described mesenchymal tumor that can develop in any portion of the gastrointestinal tract. The occurrence of a GIST in the urinary tract is rare, but GIST can present as tumor of the urinary tract or invade the urinary tract. This is the first reported case of GIST in the ileal neobladder, which presented as a submucosal tumor. The patient underwent an open exploration and partial resection of the neobladder pouch.     

负载膀胱癌冻融抗原对树突状细胞分泌IL-12的影响

目的 探讨负载膀胱癌冻融抗原对树突状细胞（DCs）分泌IL-12的影响。方法 反复冻融法获得膀胱癌细胞株BIU-87细胞抗原；联合应用重组人的GM-CSF、IL-4和TNF-α体外诱导健康志愿者DCs并负载膀胱癌肿瘤抗原；用ELISA法检测第3、6和9天培养细胞的上清液，评价DCs分泌IL-12 p70的能力。结果 联合应用重组人的GM-CSF、IL-4和TNF-α可在体外诱导出DCs；经ELISA方法检测，不同时期的DCs分泌IL-12的量不同，而且负载抗原DCs较未负载抗原DCs有更强的分泌能力（P〈0．05）。结论 IL-12 p70的分泌量受DCs的成熟状态及某些刺激信号的影响，膀胱癌冻融抗原是其刺激信号之一。