BACKGROUND Intraductal papillary neoplasm of the bile duct(IPNB)is a rare distinct subtype of precursor lesions of biliary carcinoma.IPNB is considered to originate from luminal biliary epithelial cells,typically disp...BACKGROUND Intraductal papillary neoplasm of the bile duct(IPNB)is a rare distinct subtype of precursor lesions of biliary carcinoma.IPNB is considered to originate from luminal biliary epithelial cells,typically displays mucin-hypersecretion or a papillary growth pattern,and results in cystic dilatation[1].IPNB develops anywhere in the intrahepatic and extrahepatic biliary tracts,and can occur in various pathological stages from low-grade dysplasia to invasive carcinoma.IPNBs have similar phenotypic changes in the occurrence and development of all subtypes,and the prognosis is significantly better than that of traditional(nonpapillary)cholangiocarcinoma.AIM To evaluate the clinicopathological features of IPNB to provide evidence-based guidance for treatment.METHODS Invasive IPNB,invasive intraductal papillary mucinous neoplasm of the pancreas(IPMN),and traditional cholangiocarcinoma data for affected individuals from 1975 to 2016 were obtained from the Surveillance,Epidemiology,and End Results(SEER)database.Annual percentage changes(APCs)in the incidence and incidence-based(IB)mortality were calculated.We identified the independent predictors of overall survival(OS)and cancer-specific survival(CSS)in indivi duals with invasive IPNB.RESULTS The incidence and IB mortality of invasive IPNB showed sustained decreases,with an APC of-4.5%(95%CI:-5.1%to-3.8%)and-3.3%(95%CI:-4.1%to-2.6%)(P<0.001),respectively.Similar decreases in incidence and IB mortality were seen for invasive IPMN but not for traditional cholangiocarcinoma.Both OS and CSS for invasive IPNB were better than for invasive IPMN and traditional cholangiocarcinoma.A total of 1635 individuals with invasive IPNB were included in our prognosis analysis.The most common tumor sites were the pancreaticobiliary ampulla(47.9%)and perihilar tract(36.7%),but the mucin-related subtype of invasive IPNB was the main type,intrahepatically(approximately 90%).In the univariate and multivariate Cox regression analysis,age,tumor site,grade and stage,subtype,surgery,and chemotherapy were associated with OS and CSS(P<0.05).CONCLUSION Incidence and IB mortality of invasive IPNB trended steadily downward.The heterogeneity of IPNB comprises site and the tumor’s mucin-producing status.展开更多
AIM:To analyze the expression profiles of long noncoding RNAs(lncRNAs)in hepatocellular carcinoma.METHODS:Hepatocellular carcinoma(HCC)tissues and matched adjacent non-tumor(NT)liver tissues were collected from 29 pat...AIM:To analyze the expression profiles of long noncoding RNAs(lncRNAs)in hepatocellular carcinoma.METHODS:Hepatocellular carcinoma(HCC)tissues and matched adjacent non-tumor(NT)liver tissues were collected from 29 patients with HCC,immediately after liver resection,between March 2011 and July2013.The diagnosis of HCC was made based on histological examination.Differentially expressed lncRNAs between HCC and NT tissues were revealed through microarray-based lncRNAs expression profiling.Further,quantification of selected lncRNAs was performed using quantitative real-time reverse transcription polymerase chain reaction(qRT-PCR).RESULTS:Six hundred and fifty-nine lncRNAs were differentially expressed between HCC and NT tissues,of which five[TCONS_00018278,AK093543,D16366,ENST00000501583,NR_002819(MALAT1)]were selected for validation.Four of them were significantly downregulated in HCC tissues compared with NT tissues(P=0.012,0.045,0.000 and 0.000,respectively),and the expression level of MALAT1 showed no significant difference(P=0.114).CONCLUSION:This study identified a set of lncRNAs differentially expressed in HCC tissues and provided useful information for exploring potential therapeutic targets and diagnostic biomarkers of this cancer.展开更多
基金Supported by the National Natural Science Foundation of China,No. 81860431 and 82060447the Jiangxi Natural Science Foundation,No. 20181BBG70025
文摘BACKGROUND Intraductal papillary neoplasm of the bile duct(IPNB)is a rare distinct subtype of precursor lesions of biliary carcinoma.IPNB is considered to originate from luminal biliary epithelial cells,typically displays mucin-hypersecretion or a papillary growth pattern,and results in cystic dilatation[1].IPNB develops anywhere in the intrahepatic and extrahepatic biliary tracts,and can occur in various pathological stages from low-grade dysplasia to invasive carcinoma.IPNBs have similar phenotypic changes in the occurrence and development of all subtypes,and the prognosis is significantly better than that of traditional(nonpapillary)cholangiocarcinoma.AIM To evaluate the clinicopathological features of IPNB to provide evidence-based guidance for treatment.METHODS Invasive IPNB,invasive intraductal papillary mucinous neoplasm of the pancreas(IPMN),and traditional cholangiocarcinoma data for affected individuals from 1975 to 2016 were obtained from the Surveillance,Epidemiology,and End Results(SEER)database.Annual percentage changes(APCs)in the incidence and incidence-based(IB)mortality were calculated.We identified the independent predictors of overall survival(OS)and cancer-specific survival(CSS)in indivi duals with invasive IPNB.RESULTS The incidence and IB mortality of invasive IPNB showed sustained decreases,with an APC of-4.5%(95%CI:-5.1%to-3.8%)and-3.3%(95%CI:-4.1%to-2.6%)(P<0.001),respectively.Similar decreases in incidence and IB mortality were seen for invasive IPMN but not for traditional cholangiocarcinoma.Both OS and CSS for invasive IPNB were better than for invasive IPMN and traditional cholangiocarcinoma.A total of 1635 individuals with invasive IPNB were included in our prognosis analysis.The most common tumor sites were the pancreaticobiliary ampulla(47.9%)and perihilar tract(36.7%),but the mucin-related subtype of invasive IPNB was the main type,intrahepatically(approximately 90%).In the univariate and multivariate Cox regression analysis,age,tumor site,grade and stage,subtype,surgery,and chemotherapy were associated with OS and CSS(P<0.05).CONCLUSION Incidence and IB mortality of invasive IPNB trended steadily downward.The heterogeneity of IPNB comprises site and the tumor’s mucin-producing status.
基金Supported by Grants from the China Medical Board of New York,No.11-045National Key Technology Research and Development Program of China,No.BAI06B01
文摘AIM:To analyze the expression profiles of long noncoding RNAs(lncRNAs)in hepatocellular carcinoma.METHODS:Hepatocellular carcinoma(HCC)tissues and matched adjacent non-tumor(NT)liver tissues were collected from 29 patients with HCC,immediately after liver resection,between March 2011 and July2013.The diagnosis of HCC was made based on histological examination.Differentially expressed lncRNAs between HCC and NT tissues were revealed through microarray-based lncRNAs expression profiling.Further,quantification of selected lncRNAs was performed using quantitative real-time reverse transcription polymerase chain reaction(qRT-PCR).RESULTS:Six hundred and fifty-nine lncRNAs were differentially expressed between HCC and NT tissues,of which five[TCONS_00018278,AK093543,D16366,ENST00000501583,NR_002819(MALAT1)]were selected for validation.Four of them were significantly downregulated in HCC tissues compared with NT tissues(P=0.012,0.045,0.000 and 0.000,respectively),and the expression level of MALAT1 showed no significant difference(P=0.114).CONCLUSION:This study identified a set of lncRNAs differentially expressed in HCC tissues and provided useful information for exploring potential therapeutic targets and diagnostic biomarkers of this cancer.
