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| 1 | 转化生长因子-β_1对鼠肝细胞凋亡调控作用的研究显示文摘目的 :本研究旨在明确正常肝和肝硬化肝细胞中转化生长因子 β1(TGF β1)的作用及其与凋亡的关系。 方法 :通过 5 0 %四氯化碳 (CCl4)腹腔注射诱发BALB/c小鼠形成肝硬化模型 ;应用改良的胶原酶原位灌注法分离正常和肝硬化小鼠的肝细胞 ;利用 1.5 %的琼脂糖凝胶电泳观察DNA梯形条带 ,并应用DNA荧光染料Hoechst33342对正常肝细胞进行染色 ,以检测TGF β1诱导的凋亡。 结果 :以胶原酶原位二步灌流法分离肝细胞的活率为 95 .2 %。正常肝细胞予以TGF β1处理后 ,应用 1.5 %的琼脂糖凝胶电泳可以发现具有凋亡特征的梯形条带。硬化肝细胞则很少出现梯形条带。经TGF β1处理的正常肝细胞应用Hoechst染色发现 ,其凋亡率明显高于未处理组。 结论 :肝硬化肝细胞不能像正常肝细胞那样发生TGF β1诱导的凋亡 。 | 王春雷 黄志强 周宁新 Kevin Behrns | 2004 | 医学研究生学报2004,17,10: | 6 |
| 2 | TGF-β1诱导鼠肝细胞凋亡信号转导机制的研究显示文摘目的 本研究旨在明确TGF β1诱导鼠肝细胞凋亡与Caspase 3及Caspase 8的关系。方法 通过 5 0 %CCl4腹腔注射 ,用 8周时间诱发BALB/c小鼠形成肝硬化模型。应用改良的胶原酶原位灌注法分离小鼠的肝细胞。为检测TGF β1(5ng/ml)诱导凋亡 ,利用 1.5 %的琼脂糖凝胶电泳观察DNA梯形条带 ,应用DNA荧光染料Hoechst 33342对正常肝细胞进行染色 ,并在荧光显微镜下观察比较Caspase 3和Caspase 8在TGF β1诱导的凋亡中的作用。 结果 胶原酶原位二步灌流法分离肝细胞活率为 95 .2 %。正常肝细胞予以TGF β1处理后 ,应用 1.5 %的琼脂糖凝胶电泳可以发现具有凋亡特征的梯形条带。硬化肝细胞则很少出现梯形条带。经TGF β1处理的鼠正常肝细胞应用Hoechst染色发现 ,其凋亡率明显高于未处理组 ,分别为 5 8.76 %和 18.0 3% ,两组具有明显的差别。但凋亡可以被Caspase 3和Caspase 8抑制剂阻止。 结论 硬化肝细胞不能象正常肝细胞那样发生TGF β1诱导的凋亡 ,提示硬化肝细胞的抑制性生长调控机制已受损。TGF β1通过Caspase 3和Cas pase 8的活化诱导鼠肝细细胞产生凋亡。 | 王春雷 黄志强 周宁新 Kevin Behrns | 2004 | 消化外科2004,3,6: | 6 |
| 3 | c-Met signaling in the development of tumorigenesis and chemoresistance: Potential applications in pancreatic cancer显示文摘Pancreatic ductal adenocarcinoma is the 4th leading cause of cancer deaths in the United States.The majority of patients are candidates only for palliative chemotherapy,which has proven largely ineffective in halting tumor progression.One proposed mechanism of chemoresistance involves signaling via the mesenchymalepithelial transition factor protein(MET),a previously established pathway critical to cell proliferation and migration.Here,we review the literature to characterize the role of MET in the development of tumorigenesis,metastasis and chemoresistance,highlighting the potential of MET as a therapeutic target in pancreatic cancer.In this review,we characterize the role of c-Met in the development of tumorigenesis,metastasis and chemoresistance,highlighting the potential of c-Met as a therapeutic target in pancreatic cancer. | Daniel Delitto Eva Vertes-George Steven J Hughes Kevin E Behrns Jose G Trevino | 2014 | World Journal of Gastroenterology2014,20,26: | 6 |
| 4 | Role of autophagy in differential sensitivity of hepatocarcinoma cells to sorafenib显示文摘AIM: To investigate the role of sorafenib(SFN) in autophagy of hepatocellular carcinoma(HCC). We evaluated how SFN affects autophagy signaling pathway in human HCC cell lines. METHODS: Two different human HCC cell lines, Hep3 B and Huh7, were subjected to different concentrations of SFN. Cell viability and onset of apoptosis were determined with colorimetric assay and immunoblotting analysis, respectively. The changes in autophagy-related proteins, including LC3, ULK1, AMPK, and LKB, were determined with immunoblotting analysis in the presence or absence of SFN. To assess autophagic dynamics, autophagic flux was measured with chloroquine, a lysosomal inhibitor. The autophagic responsiveness between different HCC cell lines was compared under the autophagy enhancing conditions.RESULTS: Hep3 B cells were significantly more resistant to SFN than Huh7 cells. Immunoblotting analysis revealed a marked increase in SFN-mediated autophagy flux in Huh7 cells, which was, however, absent in Hep3 B cells. While both starvation and rapamycin enhanced autophagy in Huh7 cells, only rapamycin increased autophagy in Hep3 B cells. Immunoblotting analysis of autophagy initiation proteins showed that SFN substantially increased phosphorylation of AMPK and consequently autophagy in Huh7, but not in Hep3 B cells.CONCLUSION: The autophagic responsiveness to SFN is distinct between Hep3 B and Huh7 cells. Resistance of Hep3 B cells to SFN may be associated with altered autophagy signaling pathways. | Trevan D Fischer Jin-Hee Wang Adrian Vlada Jae-Sung Kim Kevin E Behrns | 2014 | World Journal of Hepatology2014,6,10: | 5 |
| 5 | TGF-β1诱导人肝癌细胞系凋亡信号转导机理的研究显示文摘目的探讨转化生长因子β1(TGF-β1)诱导人肝癌细胞系凋亡及其与p53基因及Smad4的关系。方法选用3种含有不同p53基因状态的人肝癌细胞系,均分为TGF-β1诱导组(实验组)和对照组;应用脱氧核糖核苷酸末端转移酶介导的dUTP缺口末端标记技术(TUNEL)对TGF-β1诱导的肝癌细胞的凋亡进行定量检测;另外,应用Lipofectamine2000把含有Smad4结合元件和荧光素酶基因的TGF-β1可诱导的荧光素酶报告质粒对细胞进行转染,再经TGF-β1作用,分别检测其相对荧光素酶活性。结果在应用TUNEL检测的3个细胞系中,TGF-β1能诱导HepG2细胞(野生型p53)凋亡,其细胞凋亡率实验组明显高于对照组(P<0.05);而Huh-7(突变型p53)和Hep3B细胞(缺失型p53)凋亡细胞较少,其细胞凋亡率实验组与对照组差异无统计学意义(P>0.05)。荧光素酶检测提示,HepG2细胞的Smad4表达活性实验组明显高于对照组(P<0.05);而Huh-7和Hep3B细胞的Smad4表达较低,实验组与对照组差异无统计学意义(P>0.05)。结论HepG2细胞系比Huh-7和Hep3B细胞系更易发生TGF-β1诱导的凋亡,Smad4是TGF-β1信号转导途径的主要调控因子之一。 | 王春雷 黄志强 万远廉 Kevin Behrns | 2005 | 中国普外基础与临床杂志2005,12,5: | 5 |
| 6 | TGF-β1诱导鼠肝细胞凋亡信号转导机制的研究显示文摘目的:本研究旨在明确转化生长因子β1(TGF-β1)诱导鼠肝细胞凋亡与caspase-3及caspase-8的关系。方法:通过50%CCl4腹腔注射,用8W时间诱发BALB/c小鼠形成肝硬化模型。应用改良的胶原酶原位灌注法分离小鼠的肝细胞。为检测TGFβ1(5ng/ml)诱导的凋亡,利用1.5%的琼脂糖凝胶电泳观察DNA梯形条带,应用DNA荧光染料Hoechst33342对正常肝细胞进行了染色,并在荧光显微镜下观察比较caspase3和caspase8在TGF-β1诱导的凋亡中的作用。结果:胶原酶原位二步灌流法分离肝细胞活率为95.2%。正常肝细胞予以TGFβ1处理后,应用1.5%的琼脂糖凝胶电泳可以发现具有凋亡特征的梯形条带。硬化肝细胞则很少出现梯形条带。经TGFβ1处理的鼠正常肝细胞应用Hoechst染色发现,其凋亡率明显高于未处理组,分别为58.76%和18.03%,两组具有明显的差别。但凋亡可以被caspase3和caspase8抑制剂阻止。结论:硬化肝细胞不能象正常肝细胞那样发生TGF-β1诱导的凋亡,提示硬化肝细胞的抑制性生长调控机制已受损。TGF-β1通过caspase-8和caspase-3的活化诱导鼠肝细胞产生凋亡。 | 王春雷 黄志强 周宁新 Kevin Behrns | 2005 | 军医进修学院学报2005,26,3: | 4 |
| 7 | Hepatic steatosis as a potential risk factor for major hepatic resection显示文摘 | Kevin E. Behrns Gregory G. Tsiotos Nelson E DeSouza M. K. Krishna Jurgen Ludwig David M. Nagomey | 1998 | Journal of Gastrointestinal Surgery1998,,3: | 2 |
| 8 | TGF-β1对人肝癌细胞系凋亡的调控作用研究显示文摘目的 本研究旨在明确人肝癌细胞系中TGF β1的作用及其与凋亡的关系。 方法 本研究选用了 3种含有不同 p5 3基因状态的人肝癌细胞系 ,应用TUNEL技术对TGF β1诱导的肝癌细胞的凋亡进行了定量检测。结果 TGF β1仅能诱导HepG2细胞 (野生型p5 3)凋亡 ,这提示凋亡与 p5 3基因的表达具有明确的联系。结论 HepG2细胞系比Huh 7和Hep3B系细胞更易发生TGF β1诱导的凋亡 ,TGF β1通过p5 | 王春雷 黄志强 周宁新 Kevin Behrns | 2004 | 肿瘤防治研究2004,31,9: | 2 |
| 9 | Critical role of autophage in ischemia/reperfusion injury to aged livers显示文摘 | Wang JH Behrns KE Leeuwenburgh C | 2012 | Autophagy2012,8,1: | 1 |
| 10 | Heat shock protein 90 inhibition abrogates hepatocellularcancer growth through cdc2 -mediated G2/M cell cycle arrest and apoptosis 显示文摘 | WATANABE G BEHRNS K E KIM J S | 2009 | Cancer Chemother Pharmacol2009,64,3: | 1 |
| 11 | Apoptosis: cell death by proteolytic scalpel显示文摘 | Behrns KE Schrum LW Que FG | 1999 | Surgery1999,126,3: | 1 |
| 12 | Prospective evaluation of gastric acid secretion and cobalamin absorption following gastric bypass for clinically severe obesity显示文摘 | Behrns KE Smith CD Sarr MG | | 0,,: | 1 |
| 13 | Surgical therapy of pancreatic pseudocysts显示文摘 | Behrns KE Ben-David K | 2005 | J Gastrointest Surg2005,12,12: | 1 |
| 14 | Surgical therapy of pancreatic pseudo-cysts显示文摘 | Behrns KE Ben-David K | 2008 | J Gastrointest Surg2008,12,12: | 1 |
| 15 | Early ERCPfor gallstone pancreatitis: for whom and when 显示文摘 | Behrns KE Ashley SW Hunter JG | 2008 | Gastrointest Surg2008,12,4: | 1 |
| 16 | Early ERCP for gallstone pancreatitis: for whom and when 显示文摘 | Behrns KE Ashley SW Hunter JG | 2008 | J Gastrointest Surg2008,12,4: | 1 |
| 17 | Radical pancreatoduodenectomy for misdiagnosed pancreatic mass显示文摘 | Smith CD Behrns KE van Heerden JA | 1994 | Br J Surg1994,81,4: | 1 |
| 18 | Outcomes of Lichtenstein hernioplasty for primary and recurrent inguinal hernia显示文摘 | Behrn MA Cruces KS | 2006 | World J Surg2006,30,12: | 1 |
| 19 | Esophageal perforation management using a multidisciplinary minimally invasive treatment algorithm 显示文摘 | Ben-David I4 Behrns K Hoehwald S | 2014 | JAm Coil Surg2014,218,4: | 1 |
| 20 | Early ERCP for gallstone panereatitis: for whom and when 显示文摘 | Behrns KE AsMey SW Hunter JG | 2008 | J Gastrointest Surg2008,12,4: | 1 |