BACKGROUND:The stimulatory G protein α subunit(Gsα)plays important roles in diverse cell processes including tu morigenesis. Activating mutations in Gsα gene(GNAS) have been reported to be associated with poor prog...BACKGROUND:The stimulatory G protein α subunit(Gsα)plays important roles in diverse cell processes including tu morigenesis. Activating mutations in Gsα gene(GNAS) have been reported to be associated with poor prognosis in various human carcinomas. Furthermore, Gsα signaling is crucial in promoting liver regeneration by interacting with growth factor signaling, indicating that Gsα might play a promoting role in cancer development. However, little is known about the correlation between Gsα levels and clinicopathological pa rameters in intrahepatic cholangiocarcinoma(ICC). METHODS:We performed immunoblotting to examine the expression levels of Gsα and Ki67 proteins in tumor tissues and the corresponding adjacent tissues. A total of 74 pair of specimens resected from 74 ICC patients were examined. The association between Gsα levels and clinicopathological find ings and prognosis of the patients was evaluated.RESULTS:Western blotting demonstrated that the expression of Gsα was significantly higher in ICC tissues compared with that in their corresponding adjacent tissues. Gsα protein was highly expressed in about half of ICC tissues(48.6%, 36/74)while only 28.4%(21/74) of tumor adjacent tissues showed Gsα high expression(P=0.011). High Gsα expression in ICC was significantly associated with the numbers of tumor nodules(P=0.037) and lymph node metastases(P=0.010)Moreover, the level of Gsα was significantly and positivelycorrelated with Ki67 expression(P<0.001). In addition, the recurrence-free survival rate and overall survival rate in the Gsα high group were significantly lower than those in the Gsα low group(P=0.004 and P=0.005, respectively).CONCLUSIONS:High Gsα expression is correlated with poor prognosis in ICC patients. Gsα might serve as a potential prognostic indicator of ICC.展开更多
目的:探讨鸟苷酸结合蛋白α亚基(guanine nucleotide binding protein alpha subunit,Gsα)表达与腹膜假黏液瘤(pseudomyxoma peritonei,PMP)主要临床病理特征及预后的相关性。方法:收集首都医科大学附属北京世纪坛医院65例PMP患者病理...目的:探讨鸟苷酸结合蛋白α亚基(guanine nucleotide binding protein alpha subunit,Gsα)表达与腹膜假黏液瘤(pseudomyxoma peritonei,PMP)主要临床病理特征及预后的相关性。方法:收集首都医科大学附属北京世纪坛医院65例PMP患者病理标本,行常规组织病理学和定量免疫组织化学检测Gsα蛋白表达,研究Gsα蛋白表达与主要临床病理特征及预后的相关性。结果:65例PMP肿瘤行定量免疫组织化学分析,Gsα高表达者35例(53.8%),低表达者30例(46.2%)。单因素分析显示,Gsα高表达与下列5个临床病理指标呈正相关:术前肿瘤标志物(χ^(2)=3.68,P=0.087)、术中腹水量(χ^(2)=3.69,P=0.055)、腹膜癌指数评分(peritoneal cancer index,PCI)(χ^(2)=3.12,P=0.077)、肿瘤细胞减灭程度评分(completeness of cytoreduction,CC)(χ^(2)=2.72,P=0.099)、组织病理分级(χ^(2)=5.85,P=0.016)。多因素分析显示,Gsα蛋白高表达仅与组织病理分级呈独立正相关:高级别或高级别伴印戒细胞的组织病理类型(OR=3.47,95%CI:1.1~15.6,P=0.029)。Cox多因素分析显示,年龄(HR=8.08,95%CI:2.42~26.97,P=0.001)、既往手术(HR=0.24,95%CI:0.07~0.81,P=0.022)、组织病理分级(HR=3.92,95%CI:1.12~13.70,P=0.032);Gsα蛋白表达(HR=3.25,95%CI:1.01~10.5,P=0.048)为独立预后因素。结论:Gsα蛋白高表达与高级别或高级别伴印戒细胞的组织病理类型呈正相关,提示PMP预后不良。展开更多
为探索GS1 Digital Link技术在产品物流中的应用潜力,分析研究了GS1系统和GS1 Digital Link的基本结构、编码特点以及技术优势,充分利用GS1 Digital Link技术可以为产品从源头到零售整个物流过程提供相关对象的Web地址编码的特点,以鲜...为探索GS1 Digital Link技术在产品物流中的应用潜力,分析研究了GS1系统和GS1 Digital Link的基本结构、编码特点以及技术优势,充分利用GS1 Digital Link技术可以为产品从源头到零售整个物流过程提供相关对象的Web地址编码的特点,以鲜活大闸蟹物流过程为例,构建了基于GS1 Digital Link的鲜活大闸蟹Web编码,为实现产品营销与追溯提供了标准化、动态化、多样化的编码数据支撑。展开更多
基金supported by grants from the National Natural Science Foundation of China(81472303)Applied and Fundamental Research Project of Sichuan Province(2017JY0029)Science and Technology Supporting Project of Sichuan Province(2017SZ0003)
文摘BACKGROUND:The stimulatory G protein α subunit(Gsα)plays important roles in diverse cell processes including tu morigenesis. Activating mutations in Gsα gene(GNAS) have been reported to be associated with poor prognosis in various human carcinomas. Furthermore, Gsα signaling is crucial in promoting liver regeneration by interacting with growth factor signaling, indicating that Gsα might play a promoting role in cancer development. However, little is known about the correlation between Gsα levels and clinicopathological pa rameters in intrahepatic cholangiocarcinoma(ICC). METHODS:We performed immunoblotting to examine the expression levels of Gsα and Ki67 proteins in tumor tissues and the corresponding adjacent tissues. A total of 74 pair of specimens resected from 74 ICC patients were examined. The association between Gsα levels and clinicopathological find ings and prognosis of the patients was evaluated.RESULTS:Western blotting demonstrated that the expression of Gsα was significantly higher in ICC tissues compared with that in their corresponding adjacent tissues. Gsα protein was highly expressed in about half of ICC tissues(48.6%, 36/74)while only 28.4%(21/74) of tumor adjacent tissues showed Gsα high expression(P=0.011). High Gsα expression in ICC was significantly associated with the numbers of tumor nodules(P=0.037) and lymph node metastases(P=0.010)Moreover, the level of Gsα was significantly and positivelycorrelated with Ki67 expression(P<0.001). In addition, the recurrence-free survival rate and overall survival rate in the Gsα high group were significantly lower than those in the Gsα low group(P=0.004 and P=0.005, respectively).CONCLUSIONS:High Gsα expression is correlated with poor prognosis in ICC patients. Gsα might serve as a potential prognostic indicator of ICC.
文摘目的:探讨鸟苷酸结合蛋白α亚基(guanine nucleotide binding protein alpha subunit,Gsα)表达与腹膜假黏液瘤(pseudomyxoma peritonei,PMP)主要临床病理特征及预后的相关性。方法:收集首都医科大学附属北京世纪坛医院65例PMP患者病理标本,行常规组织病理学和定量免疫组织化学检测Gsα蛋白表达,研究Gsα蛋白表达与主要临床病理特征及预后的相关性。结果:65例PMP肿瘤行定量免疫组织化学分析,Gsα高表达者35例(53.8%),低表达者30例(46.2%)。单因素分析显示,Gsα高表达与下列5个临床病理指标呈正相关:术前肿瘤标志物(χ^(2)=3.68,P=0.087)、术中腹水量(χ^(2)=3.69,P=0.055)、腹膜癌指数评分(peritoneal cancer index,PCI)(χ^(2)=3.12,P=0.077)、肿瘤细胞减灭程度评分(completeness of cytoreduction,CC)(χ^(2)=2.72,P=0.099)、组织病理分级(χ^(2)=5.85,P=0.016)。多因素分析显示,Gsα蛋白高表达仅与组织病理分级呈独立正相关:高级别或高级别伴印戒细胞的组织病理类型(OR=3.47,95%CI:1.1~15.6,P=0.029)。Cox多因素分析显示,年龄(HR=8.08,95%CI:2.42~26.97,P=0.001)、既往手术(HR=0.24,95%CI:0.07~0.81,P=0.022)、组织病理分级(HR=3.92,95%CI:1.12~13.70,P=0.032);Gsα蛋白表达(HR=3.25,95%CI:1.01~10.5,P=0.048)为独立预后因素。结论:Gsα蛋白高表达与高级别或高级别伴印戒细胞的组织病理类型呈正相关,提示PMP预后不良。
文摘为探索GS1 Digital Link技术在产品物流中的应用潜力,分析研究了GS1系统和GS1 Digital Link的基本结构、编码特点以及技术优势,充分利用GS1 Digital Link技术可以为产品从源头到零售整个物流过程提供相关对象的Web地址编码的特点,以鲜活大闸蟹物流过程为例,构建了基于GS1 Digital Link的鲜活大闸蟹Web编码,为实现产品营销与追溯提供了标准化、动态化、多样化的编码数据支撑。
