目的观察DPC4蛋白表达与胰腺癌患者预后的关系。方法对山西省人民医院2007年1月至2012年12月81例胰腺癌术后患者,采用免疫组织化学方法检测DPC4蛋白表达情况,并采用Kaplan-Meier法进行生存分析。结果81例胰腺患者中DPC4蛋白阳性表达率...目的观察DPC4蛋白表达与胰腺癌患者预后的关系。方法对山西省人民医院2007年1月至2012年12月81例胰腺癌术后患者,采用免疫组织化学方法检测DPC4蛋白表达情况,并采用Kaplan-Meier法进行生存分析。结果81例胰腺患者中DPC4蛋白阳性表达率为53%(43/81)。DPC4阳性组胰腺癌患者术后中位生存期长于DPC4阴性组(40个月比33个月,P=0.029),DPC4阳性组患者生存风险比是DPC4阴性组的1.826倍(HR=1.826,95% CI 1.063-3.134)。结论DPC4蛋白阳性表达的胰腺癌患者术后预后好于DPC4阴性者。展开更多
Objective.To d etermine whether the non-expression of DPC4protein only occurs late in the dev el-opment of colorectal carcinoma.Methods.In this study,we examined the ex pression of DPC4protein in formalin-fixed archiv...Objective.To d etermine whether the non-expression of DPC4protein only occurs late in the dev el-opment of colorectal carcinoma.Methods.In this study,we examined the ex pression of DPC4protein in formalin-fixed archival specimens from102colorec tal neoplasm with immunohistochemical analysis.Those specimens were classi-fie d into5stages:stageⅠ;stageⅡ(intramucosal carcinoma ,8cases);stageⅢ(primary invasive carcinoma without infiltration of the l ymph nodes,11cases);stageⅣ(primary invasive carcinoma with infiltration of the lymph nodes,25cases);and stageⅤ(carcinoma metastasized to dis-ta nt tissue,22cases).Results.The frequency of non-expression of DPC4prote ins were5.5%in stage I,12.5%in stage II;9% in stage III;36%in stage IV;32%in stag e V.The frequency of negative expression of DPC4protein were analyzed by÷ 2 test for stage II and III versus stage IV and V and there was statistically significant difference.At same time ,there was statistically signifi-cant differencefor adenoma versus carcinoma .Conclusions.The frequency of non-expression of DPC4protein increases as the stage of colorectal carcinoma advances and the non-expressio n of DPC4protein is likely to be a late event in the sequential pathogenesis o f colorectal carcinoma.The non-expression DPC4protein in colorectal neoplasm may sug-gest its malignant characteristic,which will help us to increase the insight on colorectal carcinoma.展开更多
Objective To clarify the relationship between loss of expression of DPC4 proteins and pathogenesis of biliary tract carcinoma. Methods 71 primary biliary tract carcinomas (BTCa), including 38 common bile duct (CBD) ca...Objective To clarify the relationship between loss of expression of DPC4 proteins and pathogenesis of biliary tract carcinoma. Methods 71 primary biliary tract carcinomas (BTCa), including 38 common bile duct (CBD) carcinomas, 18 gallbladder carcinomas, and 15 hilar bile ducts (HBD) carcinomas were examined by immunohistochemical staining. In addition, the CBD carcinomas were divided into two groups, a tumor group with metastasis (M+ group, 27 cases) and a tumor group without metastasis (M- group, 11 cases). Results The frequency of loss expression of DPC4 protein was 32.8% in BTCa, 47.3 % in CBD carcinoma ,11% in gallbladder carcinoma and 13% in HBD carcinoma. A comparison of the frequency of loss expression of DPC4 showed significantly statistical difference in the CBD carcinoma versus gallbladder carcinoma and HBD carcinoma (P < 0.01). The frequency of loss expression of DPC4 was 48.1 % in the M* group and 45.4% in the M" group. There was no significantly statistical difference between them (P>0.05). Conclusion There is a close relationship between the pathogenesis of BTCa and inactivation of DPC4 with different frequencies of DPC4 gene alteration in various locations of the biliary tract, but inactivation of DPC4 is not related with tumor metastasis in BTCa.展开更多
文摘目的观察DPC4蛋白表达与胰腺癌患者预后的关系。方法对山西省人民医院2007年1月至2012年12月81例胰腺癌术后患者,采用免疫组织化学方法检测DPC4蛋白表达情况,并采用Kaplan-Meier法进行生存分析。结果81例胰腺患者中DPC4蛋白阳性表达率为53%(43/81)。DPC4阳性组胰腺癌患者术后中位生存期长于DPC4阴性组(40个月比33个月,P=0.029),DPC4阳性组患者生存风险比是DPC4阴性组的1.826倍(HR=1.826,95% CI 1.063-3.134)。结论DPC4蛋白阳性表达的胰腺癌患者术后预后好于DPC4阴性者。
文摘Objective.To d etermine whether the non-expression of DPC4protein only occurs late in the dev el-opment of colorectal carcinoma.Methods.In this study,we examined the ex pression of DPC4protein in formalin-fixed archival specimens from102colorec tal neoplasm with immunohistochemical analysis.Those specimens were classi-fie d into5stages:stageⅠ;stageⅡ(intramucosal carcinoma ,8cases);stageⅢ(primary invasive carcinoma without infiltration of the l ymph nodes,11cases);stageⅣ(primary invasive carcinoma with infiltration of the lymph nodes,25cases);and stageⅤ(carcinoma metastasized to dis-ta nt tissue,22cases).Results.The frequency of non-expression of DPC4prote ins were5.5%in stage I,12.5%in stage II;9% in stage III;36%in stage IV;32%in stag e V.The frequency of negative expression of DPC4protein were analyzed by÷ 2 test for stage II and III versus stage IV and V and there was statistically significant difference.At same time ,there was statistically signifi-cant differencefor adenoma versus carcinoma .Conclusions.The frequency of non-expression of DPC4protein increases as the stage of colorectal carcinoma advances and the non-expressio n of DPC4protein is likely to be a late event in the sequential pathogenesis o f colorectal carcinoma.The non-expression DPC4protein in colorectal neoplasm may sug-gest its malignant characteristic,which will help us to increase the insight on colorectal carcinoma.
文摘Objective To clarify the relationship between loss of expression of DPC4 proteins and pathogenesis of biliary tract carcinoma. Methods 71 primary biliary tract carcinomas (BTCa), including 38 common bile duct (CBD) carcinomas, 18 gallbladder carcinomas, and 15 hilar bile ducts (HBD) carcinomas were examined by immunohistochemical staining. In addition, the CBD carcinomas were divided into two groups, a tumor group with metastasis (M+ group, 27 cases) and a tumor group without metastasis (M- group, 11 cases). Results The frequency of loss expression of DPC4 protein was 32.8% in BTCa, 47.3 % in CBD carcinoma ,11% in gallbladder carcinoma and 13% in HBD carcinoma. A comparison of the frequency of loss expression of DPC4 showed significantly statistical difference in the CBD carcinoma versus gallbladder carcinoma and HBD carcinoma (P < 0.01). The frequency of loss expression of DPC4 was 48.1 % in the M* group and 45.4% in the M" group. There was no significantly statistical difference between them (P>0.05). Conclusion There is a close relationship between the pathogenesis of BTCa and inactivation of DPC4 with different frequencies of DPC4 gene alteration in various locations of the biliary tract, but inactivation of DPC4 is not related with tumor metastasis in BTCa.