肿瘤相关抗原CA15-3在胃癌组织中的表达及其意义

应用免疫组织化学SP法检测胃癌组织及同一患者相应正常胃粘膜组织中CA15-3的表达情况。结果显示:20例胃癌组织中阳性表达者15例,而正常胃粘膜均为阴性。这表明CA15-3的表达与胃癌之间存在明显的相关性,CA15-3阳性表达可能是胃癌变细胞的标志之一。CA15-3阳性表达及胞浆阳性定位与与胃癌进展,浸润深度,淋巴结转移无关,但与胃癌分化程度呈负相关。     

子宫内膜癌PTEN蛋白表达及其临床意义

目的：探讨抑癌基因第10染色体同源丢失性磷酸酶一张力蛋白基因（PTEN）蛋白表达与子宫内膜癌的发生、发展的关系。方法：采用免疫组织化学S-P法检测PTEN蛋白在56例子宫内膜癌及30例正常子宫内膜组织的表达。结果：56例子宫内膜癌中PTEN蛋白表达缺失率为57．1％，明显高于正常子宫内膜中的完全表达（P〈0．05）。PTEN蛋白在低分化组的表达缺失率明显高于中高分化组（P〈0．05）。结论：抑癌基因PTEN蛋白表达缺失在子宫内膜癌的发生、发展、浸润等过程中有一定作用。     

乳腺癌组织中c-erbB-2、p53和nm23蛋白表达及相互关系和意义

目的　探讨c erbB 2、p53和nm2 3蛋白在乳腺癌组织中的表达与乳腺癌临床病理参数、雌激素受体 (ER)、孕激素受体 (PR)的关系。方法　应用免疫组化ABC法对 5 5例乳腺癌组织中的c erbB 2、p53和nm2 3蛋白表达进行检测。结果　 5 5例乳腺癌中c erbB 2、p53及nm2 3的阳性率分别为 49 1 % (2 7/5 5 )、47 3 % (2 6 /5 5 )和 49 1 % (2 7/5 5 ) ,c erbB 2和p53蛋白在乳腺癌中的阳性率与肿瘤病理分级及淋巴结转移有显著意义 (P <0 0 5 ) ,与雌孕激素受体状况呈负相关 (P <0 0 1 )。nm2 3蛋白在乳腺癌中的阳性率与肿瘤病理分级、淋巴结转移有密切的关系 (p <0 0 5 ) ,与雌孕激素受体状呈正相关 (p <0 0 1 )。 70 9% (3 9/5 5 )肿瘤有上述蛋白的异常表达 ,其中 49 1 % (2 7/5 5 )的肿瘤同时有多个蛋白异常表达。结论　肿瘤的多因素分析比单因素分析更有价值 ,癌基因c erbB 2、nm2 3和抑癌基因p53蛋白的表达异常及协同作用在乳腺癌的发生发展中起重要使用     

Inducible nitric oxide synthase expression is related to angiogenesis,bcl-2 and cell proliferation in hepatocellular carcinoma

In this study, we examined the expression of inducible nitric oxide synthase (iNOS) and vascular endothelial growth factor (VEGF) by immunohistochemical staining in 76 tissue sections collected from hepatocellular carcinoma (HCC) patients undergoing hepatectomy. Microvascular density (MVD) was determined by counting endothelial cells immunostained using anti-CD34 antibody. We performed DNA-flow cytometric analyses to elucidate the impact of iNOS and VEGF expression on the cell cycle of HCC. Most of the HCC cells that invaded stroma were markedly immunostained by iNOS antibody. The iNOS stain intensity of the liver tissue close to the tumor edge was stronger than that of HCC tissue, and the strongest was the hepatocytes closer to the tumor tissue. However, iNOS expression in 10 normal hepatic samples was undetectable. VEGF positive expression ratio was 84.8% in iNOS positive expression cases, and the ratio was 35.3% in negative cases. There was significant correlation (P=0.000) between iNOS and VEGF expression. Moreover, iNOS expression was significantly associated with bcl-2 and MVD, but without p53 expression. DNA-flow cytometric analyses showed that combined expression of iNOS and VEGF had significant impact on the cell cycle in HCC. PI (Proliferating Index) and SPF (S-phase fraction) in the combined positive expression of iNOS and VEGF group was significantly higher than that in the combined negative group. The present findings suggested that iNOS expression was significantly associated with angiogenesis, bcl-2 and cell proliferation of HCC. Project supported in part by the National Ninth-Five-Years Project Fund (No. 96909121), China     

食管癌三维适形后程加速超分割放射治疗的疗效分析

目的评价三维适形后程加速超分割放射治疗食管癌的疗效及放疗反应、并发症。方法2002年2月至2004年5月,71例食管鳞癌随机分成两组,三维适形后程加速超分割组36例,食管病变上下外约4cm,前后、左右外约0.5~1cm作为PTV1,每次2GY,每周5次,DT40GY后,病变上下外约2cm,前后、左右外约0.5~1cm作为PTV2,每日2次,每次1.5GY,间隔4~6小时,总疗程6周,总剂量67GY/38次。非三维适形后程加速超分割组35例,时间、剂量、分割方式同适形组。所有病例均采用8MV-X外照射。结果1、2、3年的生存率和原发肿瘤的局控率,与非适形后程加速超分割比较,适形组明显提高,分别为88.9%、75%、63.9%比68.6%、51.4%、40%和86.1%、72.2%、58.3%比65.7%、48.5%、34.3%。适形组的急性放射反应明显低于非适形后程加速超分割组,两组有显著差别。结论本研究的初步结果表明食管癌适形后程加速超分割放射治疗的疗效优于非适形后程加速超分割组。     

结直肠癌营养风险筛查研究进展

营养风险是指现存的或潜在的与营养因素相关的导致患者出现不良临床结局的风险。结直肠癌是常见的恶性肿瘤,在我国发病率逐年升高,由于生理病理原因,以及治疗方法使其更易存在营养风险。现将营养风险及其筛查常用工具进行简单综述,并重点综述结直肠癌营养风险筛查2002（NRS 2002）的应用现状,以期指导临床实践。     

Protein Thiols and Butryrylcholinestrase in Saliva of Oral Cancer Patients

Oral squamous cell carcinoma is one of the most common malignancies recognized. Biomarkers which can predict presence of cancer and its progression can help in better management of these disorders. Over production of lipid peroxidation byproducts and disturbances in antioxidant defense system have been implicated in the pathogenesis of several diseases including oral cancer. Studies have shown a correlation of butyrylcholinesterase (BChE), with tumourigenesis, cell proliferation and cell differentiation. Earlier we have observed a significant elevation in plasma BChE and protein thiols in oral cancer patients which correlated well with stages of cancer. As it was not clear whether the above markers will be altered in saliva of oral cancer patients this study was undertaken. Institutional Ethics Committee gave permission to carry out this study. Total of 55 subjects comprising healthy controls (n = 30) and biopsy proven oral cancer patients (n = 25) consented to participate in this study. Salivary samples from cases were taken before any definitive treatment. Protein thiols and BChE were estimated in salivary samples using validated assay methods. Oral cancer patients had a significant increase in pre-treatment salivary BChE levels (p ≤ 0.001) and a significant decrease (p ≤ 0.001) in salivary thiols as compared to respective values in controls. Salivary protein thiols and BChE may have a role in pathophysiology of oral cancer. Saliva can be used as a potential non-invasive screening tool in oral cancer patients.     

大肠癌组织中CD105和Ki-67的表达及其临床病理学意义

目的探讨大肠癌组织中CD105和Ki-67的表达及其意义。方法采用免疫组织化学PV-9000法检测50例大肠癌组织和10例正常大肠黏膜组织中CD105和Ki-67的表达,检测肿瘤内微血管密度（MVD）以及计算增殖指数（PI）。结果Ki-67和CD105在大肠癌组织中呈高表达（51．34±24．44,16．44±6．33）,与正常黏膜组织中的表达（21．10±8.66,4．00±1．25）相比较,差异有极显著的统计学意义（P〈0．01）。Ki-67的表达与大肠癌的分化程度、临床分期和淋巴结的转移有关,有显著统计学意义（P〈0．05）。MVD与大肠癌的分化程度、临床分期有关（P〈0．05）,但与淋巴结转移无关（P〉0．05）。Ki-67在大肠癌高微血管密度组的表达（68.28±16．91）明显高于低微血管密度组（30．59±13．90）,差异非常显著（P〈0．01）,Ki钾的表达与MYD呈正相关（r=0．28,P〈0.01））。结论CD105和Ki-67在大肠腺癌的发生发展中起着重要作用,并且同时检测两者的表达对大肠腺癌的抗血管治疗和判断其预后有一定应用价值。     

Clinical outcomes of fertility-sparing treatments in young patients with epithelial ovarian carcinoma

Objective  

To assess the clinical outcomes of fertility-sparing treatments in young patients with epithelial ovarian carcinoma (EOC).     

Evaluation of serum mucoproteins in patients suffering from liver cancers

Mucoproteins are normal and essential constituents of different types of cells, tissues, and organs in our body. Interestingly, an increase in the serum mucoprotein has been described in several malignant disorders in various studies. To study this in the cases of hepatocellular carcinoma thirty five patients suffering from histologically or cytologically confirmed hepatocellular carcinoma were tested for serum mucoprotein in the Department of Biochemistry and the Department of Pathology of North Bengal Medical College for a period of one and a half years against matched healthy controls. The serum mucoprotein was found to be increased significantly in the cases suffering from hepatocellular carcinoma (p<0.001). So, the present study suggests a strong correlation between the mucoprotein level and carcinomatous changes in the hepatocellular tissues.