Primary liver cancer remains one of the most lethal malignancies worldwide. Due to differences in prevalence of etiological factors the incidence of primary liver can-cer varies among the world, with a peak in East-As...Primary liver cancer remains one of the most lethal malignancies worldwide. Due to differences in prevalence of etiological factors the incidence of primary liver can-cer varies among the world, with a peak in East-Asia. As this disease is still lethal in most of the cases, research has to be done to improve our understanding of the disease, offering insights for possible treatment options. For this purpose, animal models are widely used, especially mouse models. In this review, we describe the different types of mouse models used in liver cancer research, with emphasis on genetically engineered mice used in this field. We focus on hepatocellular carcinoma (HCC), as this is by far the most common type of primary liver cancer, accounting for 70%-85% of cases.展开更多
AIM: To study the distribution and stability of antisense oligodeoxynucleotide (ASODN) in Walker-256 cells and their distribution in liver, lung and kidney tissues after being infused alone or mixed with lipiodol via ...AIM: To study the distribution and stability of antisense oligodeoxynucleotide (ASODN) in Walker-256 cells and their distribution in liver, lung and kidney tissues after being infused alone or mixed with lipiodol via hepatic artery in a rat liver tumor model.METHODS: 5'-Isothiocyananate (FITC)-labeled vascular endothelial growth factor (VEGF) ASODN was added into Walker-256 cell culture media. Its distribution in cells was observed by fluorescence microscope at different time points. Walker-256 carcinosarcoma was transplanted into Wistar rat liver to establish a liver cancer model. 5'-FITC-labeled VEGF ASODN mixed with (mixed group, n = 6) or without (TAI group, n = 6)ultra-fluid lipiodol was administrated via hepatic artery.Frozen samples of liver, lung and kidney tissue were taken from rats after 1, 3 and 6 d, respectively. The distribution of ASODN was observed under fluorescent microscope.RESULTS: ASODN could enter cytoplasm within 2 h and nuclei within 6 h. Accumulation of ASODN reached the peak point in nuclei at 12 h, and then disappeared gradually. No fluorescence could be seen in cells at 48 h. In vivo experiment, on d 1 and 3 the fluorescence staining in liver was stronger in mixed group than in TAI group and more fluorescence could be detected in lung and kidney in TAI group than in mixed group. On d 6, no fluorescence could be detected in TAI group, but faint fluorescence could be seen in mixed group. ASODN could be seen in cancer cells and normal hepatic cells. In mixed group, ASODN was mainly distributed in liver tumor tissues.CONCLUSION: ASODN can transfect Walker-256 cells.ASODN mixed with lipiodol infusion via hepatic artery can be used in the treatment of HCC.展开更多
Objective： To screen and analyze key express sequence tags （ESTs） which were differentially displayed in every period of SD rats＇ primary hepatic carcinoma and reveal the molecular mechanism of carcinogenesis. Met...Objective： To screen and analyze key express sequence tags （ESTs） which were differentially displayed in every period of SD rats＇ primary hepatic carcinoma and reveal the molecular mechanism of carcinogenesis. Methods： Using diethylnitrosamine （DENA） as a cancerigenic agent, animal models with different phases of primary hepatic cancer were constructed in SD rats. Rats were respectively sacrificed at d 14, d 28, d 56, d 77, d 105 and d 112 after the rats received DENA by gavage, then the livers were harvested. One part of the livers was classified according to their pathological changes, while the other was reserved for molecular mechanism studies on hepatocarcinogenesis. The differentially expressed genes were isolated from both normal and morbid tissues by mRNA differential display technique （DDRT-PCR）. After the fragments were sequenced, bioinformatics were .used to analyze the results. Results： Twelve differentially expressed cDNA fragments were obtained. Nine fragments had the homology with known cDNA clones, especially EST-7 was similar to BN/SsNHsdMCW mitochondrion gene and the identity was 100% which suggested EST-7 may be the part of BN/SsNHsdMCW mitochondrion gene. In contrast, other three fragments （EST-1, EST-3 and EST-5） had extremely low identity to any genes registered in GENBANK databases. Conclusions： BN/SsNHsdMCW mitochondrion gene was expressed in different periods of hepatocarcinogenesis. Moreover, EST-I, EST-3 and EST-5 were suggested to contribute to the development of rat hepatocarcinogenesis, and thus may be candidates of new targets of oncogenes or cancer suppressor genes.展开更多
Objective:To discuss the value of lymph node mapping in rabbit liver cancer with nanocarbon and methylene blue injecta.Methods:Rabbit liver cancer model was established by transplanting VX2 cells with laparotomy in ce...Objective:To discuss the value of lymph node mapping in rabbit liver cancer with nanocarbon and methylene blue injecta.Methods:Rabbit liver cancer model was established by transplanting VX2 cells with laparotomy in celiac planting method.Twenty Japan white rabbits were divided into two groups randomly.Each group had 10 rabbits.Lymph node mapping in (wo groups rabbit liver cancer were observed.Two groups rabbit liver cancer and local lymph nodes were removed.The number and location of local lymph nodes were recorded,and then the samples were obtained from both groups.Results:The lymph nodes dyed time was(100.50±29.92) s in nanocarbon group,and(11.20+4.18) s in methylene blue group with statistical significance between two groups(P=0.000).In the comparison of lymph node fading time,nanocarbon group was(2.22±0.74) h,methylene blue group was(1.63+0.54) h,nanocarbon group was longer than the methylene blue group,but without statistical significance(P=0.058).The accuracy was 87.5% (35/40) in methylene blue group,while,the nanocarbon group was 87.2%(34/39),with statistical significance(P=1.000).Conclusions:Experimental results show that application of nanocarbon injection and methylene blue injection during resection of liver cancer and local lymph nodes in rabbit liver cancer model has obvious tracer function in liver cancer and lymphatic drainage. It can reduce the complexity and risk of the operation,and avoid the blindness in the process of traditional lymph node dissection surgery.Besides,they can effectively reduce the number of residual lymph nodes after operation.It can achieve the lymph node dissection more thoroughly, promptly,easily and safely.展开更多
目的分析2000—2019年我国肝癌发病与死亡趋势,为我国肝癌防治策略的制订提供科学依据。方法收集2000—2019年全球健康数据交换(the Global Health Data Exchange,GHDx)数据库中我国肝癌发病与死亡个案信息,运用JoinPoint回归模型以平...目的分析2000—2019年我国肝癌发病与死亡趋势,为我国肝癌防治策略的制订提供科学依据。方法收集2000—2019年全球健康数据交换(the Global Health Data Exchange,GHDx)数据库中我国肝癌发病与死亡个案信息,运用JoinPoint回归模型以平均年度变化百分比(average annual percent change,AAPC)和年度变化百分比(annual percent change,APC)分别描述全人群、不同性别及不同年龄肝癌发病与死亡的变化趋势。结果2000—2019年我国肝癌发病和死亡总例数分别为4322652例和4093855例,标化发病率和死亡率分别为11.31/10万和9.68/10万。2000—2019年我国肝癌的发病率呈下降趋势(AAPC=-2.11%),其中2000—2002年和2002—2005年均呈下降趋势,APC分别为-10.55%和-15.45%;2005—2010年和2010—2019年均呈上升趋势,APC分别为0.44%和3.39%;男性和女性人群的发病率均呈下降趋势(AAPC=-1.95%,-2.43%)。2000—2019我国肝癌的死亡率呈下降趋势(AAPC=-2.41%),其中2000—2005年呈下降趋势,APC为-13.52%,2005—2012年和2012—2019年均呈上升趋势,APC分别为0.18%和3.64%;男性和女性人群的死亡率均呈下降趋势(AAPC=-2.34%,-2.60%)。我国肝癌的年龄别发病率及死亡率随着年龄的增长呈不断上升的趋势(AAPC=5.94%,7.10%),其中男性年龄别发病率在10~40岁之间增长较快,80岁之后增长速度有所下降,女性则整体呈上升趋势;男性年龄别死亡率在5~10岁之间增长率较大,女性则随着年龄的增长整体呈上升趋势。结论2000—2019年我国肝癌发病率及死亡率整体呈下降趋势,男性的发病率和死亡率大于女性,且随年龄增长呈上升趋势,男性及老年人群是肝癌重点关注人群。展开更多
文摘Primary liver cancer remains one of the most lethal malignancies worldwide. Due to differences in prevalence of etiological factors the incidence of primary liver can-cer varies among the world, with a peak in East-Asia. As this disease is still lethal in most of the cases, research has to be done to improve our understanding of the disease, offering insights for possible treatment options. For this purpose, animal models are widely used, especially mouse models. In this review, we describe the different types of mouse models used in liver cancer research, with emphasis on genetically engineered mice used in this field. We focus on hepatocellular carcinoma (HCC), as this is by far the most common type of primary liver cancer, accounting for 70%-85% of cases.
文摘AIM: To study the distribution and stability of antisense oligodeoxynucleotide (ASODN) in Walker-256 cells and their distribution in liver, lung and kidney tissues after being infused alone or mixed with lipiodol via hepatic artery in a rat liver tumor model.METHODS: 5'-Isothiocyananate (FITC)-labeled vascular endothelial growth factor (VEGF) ASODN was added into Walker-256 cell culture media. Its distribution in cells was observed by fluorescence microscope at different time points. Walker-256 carcinosarcoma was transplanted into Wistar rat liver to establish a liver cancer model. 5'-FITC-labeled VEGF ASODN mixed with (mixed group, n = 6) or without (TAI group, n = 6)ultra-fluid lipiodol was administrated via hepatic artery.Frozen samples of liver, lung and kidney tissue were taken from rats after 1, 3 and 6 d, respectively. The distribution of ASODN was observed under fluorescent microscope.RESULTS: ASODN could enter cytoplasm within 2 h and nuclei within 6 h. Accumulation of ASODN reached the peak point in nuclei at 12 h, and then disappeared gradually. No fluorescence could be seen in cells at 48 h. In vivo experiment, on d 1 and 3 the fluorescence staining in liver was stronger in mixed group than in TAI group and more fluorescence could be detected in lung and kidney in TAI group than in mixed group. On d 6, no fluorescence could be detected in TAI group, but faint fluorescence could be seen in mixed group. ASODN could be seen in cancer cells and normal hepatic cells. In mixed group, ASODN was mainly distributed in liver tumor tissues.CONCLUSION: ASODN can transfect Walker-256 cells.ASODN mixed with lipiodol infusion via hepatic artery can be used in the treatment of HCC.
基金supported by the Key Program for Science and Technology Development of Henan Province [122102310174]the Zoology Key Subject of Henan Province
文摘Objective： To screen and analyze key express sequence tags （ESTs） which were differentially displayed in every period of SD rats＇ primary hepatic carcinoma and reveal the molecular mechanism of carcinogenesis. Methods： Using diethylnitrosamine （DENA） as a cancerigenic agent, animal models with different phases of primary hepatic cancer were constructed in SD rats. Rats were respectively sacrificed at d 14, d 28, d 56, d 77, d 105 and d 112 after the rats received DENA by gavage, then the livers were harvested. One part of the livers was classified according to their pathological changes, while the other was reserved for molecular mechanism studies on hepatocarcinogenesis. The differentially expressed genes were isolated from both normal and morbid tissues by mRNA differential display technique （DDRT-PCR）. After the fragments were sequenced, bioinformatics were .used to analyze the results. Results： Twelve differentially expressed cDNA fragments were obtained. Nine fragments had the homology with known cDNA clones, especially EST-7 was similar to BN/SsNHsdMCW mitochondrion gene and the identity was 100% which suggested EST-7 may be the part of BN/SsNHsdMCW mitochondrion gene. In contrast, other three fragments （EST-1, EST-3 and EST-5） had extremely low identity to any genes registered in GENBANK databases. Conclusions： BN/SsNHsdMCW mitochondrion gene was expressed in different periods of hepatocarcinogenesis. Moreover, EST-I, EST-3 and EST-5 were suggested to contribute to the development of rat hepatocarcinogenesis, and thus may be candidates of new targets of oncogenes or cancer suppressor genes.
文摘Objective:To discuss the value of lymph node mapping in rabbit liver cancer with nanocarbon and methylene blue injecta.Methods:Rabbit liver cancer model was established by transplanting VX2 cells with laparotomy in celiac planting method.Twenty Japan white rabbits were divided into two groups randomly.Each group had 10 rabbits.Lymph node mapping in (wo groups rabbit liver cancer were observed.Two groups rabbit liver cancer and local lymph nodes were removed.The number and location of local lymph nodes were recorded,and then the samples were obtained from both groups.Results:The lymph nodes dyed time was(100.50±29.92) s in nanocarbon group,and(11.20+4.18) s in methylene blue group with statistical significance between two groups(P=0.000).In the comparison of lymph node fading time,nanocarbon group was(2.22±0.74) h,methylene blue group was(1.63+0.54) h,nanocarbon group was longer than the methylene blue group,but without statistical significance(P=0.058).The accuracy was 87.5% (35/40) in methylene blue group,while,the nanocarbon group was 87.2%(34/39),with statistical significance(P=1.000).Conclusions:Experimental results show that application of nanocarbon injection and methylene blue injection during resection of liver cancer and local lymph nodes in rabbit liver cancer model has obvious tracer function in liver cancer and lymphatic drainage. It can reduce the complexity and risk of the operation,and avoid the blindness in the process of traditional lymph node dissection surgery.Besides,they can effectively reduce the number of residual lymph nodes after operation.It can achieve the lymph node dissection more thoroughly, promptly,easily and safely.
文摘目的分析2000—2019年我国肝癌发病与死亡趋势,为我国肝癌防治策略的制订提供科学依据。方法收集2000—2019年全球健康数据交换(the Global Health Data Exchange,GHDx)数据库中我国肝癌发病与死亡个案信息,运用JoinPoint回归模型以平均年度变化百分比(average annual percent change,AAPC)和年度变化百分比(annual percent change,APC)分别描述全人群、不同性别及不同年龄肝癌发病与死亡的变化趋势。结果2000—2019年我国肝癌发病和死亡总例数分别为4322652例和4093855例,标化发病率和死亡率分别为11.31/10万和9.68/10万。2000—2019年我国肝癌的发病率呈下降趋势(AAPC=-2.11%),其中2000—2002年和2002—2005年均呈下降趋势,APC分别为-10.55%和-15.45%;2005—2010年和2010—2019年均呈上升趋势,APC分别为0.44%和3.39%;男性和女性人群的发病率均呈下降趋势(AAPC=-1.95%,-2.43%)。2000—2019我国肝癌的死亡率呈下降趋势(AAPC=-2.41%),其中2000—2005年呈下降趋势,APC为-13.52%,2005—2012年和2012—2019年均呈上升趋势,APC分别为0.18%和3.64%;男性和女性人群的死亡率均呈下降趋势(AAPC=-2.34%,-2.60%)。我国肝癌的年龄别发病率及死亡率随着年龄的增长呈不断上升的趋势(AAPC=5.94%,7.10%),其中男性年龄别发病率在10~40岁之间增长较快,80岁之后增长速度有所下降,女性则整体呈上升趋势;男性年龄别死亡率在5~10岁之间增长率较大,女性则随着年龄的增长整体呈上升趋势。结论2000—2019年我国肝癌发病率及死亡率整体呈下降趋势,男性的发病率和死亡率大于女性,且随年龄增长呈上升趋势,男性及老年人群是肝癌重点关注人群。
