Objective： To investigate the expressions of plasminogen activator inhibitor type 1 （PAl-1）, C-erbB-2, VEGF and Ki-67 by immunohistostaining and then to evaluate the prognostic value of PAl-1 in node-negative breas...Objective： To investigate the expressions of plasminogen activator inhibitor type 1 （PAl-1）, C-erbB-2, VEGF and Ki-67 by immunohistostaining and then to evaluate the prognostic value of PAl-1 in node-negative breast cancer. Methods： The study included a retrospective series of 62 female patients with axillary lymph node-negative breast cancer. Expressions of PAl-1, C-erbB-2, VEGF and Ki-67 were determined by immunohistostaining on formalin-fixed paraffin-embedded tissue sections from these patients after a median follow-up of 69 months （range 22-117 months）. Correlations with well known clinicopathologic factors were assessed and multivariate survival analyses were performed. Results： High PAl-1 level was positively associated with high histologic grade of the tumors. Disease-free survival （DFS） was significantly shorter for the patients with moderate to intensive expression of PAl-1 than for those with negative （χ^2 = 25.46, P 〈 0.001; χ^2 = 23.07, P 〈 0.001） to mild expression （χ^2 = 19.75, P 〈 0.001; χ^2 = 17.40, P 〈 0.001）. Although on univariate analysis of the prognostic factors, tumor size, location of primary tumor and age as well as expressions of PAl-1, VEGF and Ki-67 were all significantly prognostic factors for DFS （P 〈 0.05）, PAl-1 was the only independent prognostic factor on multivariate analysis （P 〈 0.0001; hazard ratio [HR], 4.041; 95% confidence interval [CI], 1.928-8.468）. Conclusion： These results of the current study indicate that intermediate or high expression of PAl-1 represents a strong and independent unfavorable prognostic factor for the development of recurrence or metastases in axillary node-negative breast cancer.展开更多
We present candidate members of the Pal 5, GD-1, Cetus Polar and Orphan tidal stellar streams found in LAMOST DR3, SDSS DR9 and APOGEE catalogs. In LAMOST DR3, we find 20, 4 and 24 high confidence candidates of tidal ...We present candidate members of the Pal 5, GD-1, Cetus Polar and Orphan tidal stellar streams found in LAMOST DR3, SDSS DR9 and APOGEE catalogs. In LAMOST DR3, we find 20, 4 and 24 high confidence candidates of tidal streams GD-1, Cetus Polar and Orphan respectively. We also list 59, 118 and 10 high confidence candidates of tidal streams Cetus Polar, Orphan and Pal 5, respectively from the SDSS DR9 spectroscopic catalog. Furthermore, we find seven high confidence candidates of the Pal 5 tidal stream in the APOGEE data. Compared with SDSS, the new candidates from LAMOST DR3 are brighter, so that together, more of the color-magnitude diagram, including the giant branch, can be explored. Analysis of the SDSS data shows that there are three metallicity peaks associated with the Orphan stream which also exhibit some spatial separation. The LAMOST data confirm multiple metallicities in this stream. The metallicity, given by the higher resolution APOGEE instrument, of the Pal 5 tidal stream is [Fe/H] ,- -1.2, higher than that given earlier by SDSS spectra. Many previously unidentified stream members are tabulated here for the first time, along with existing members, allowing future researchers to further constrain the orbits of these objects as they move within the Galaxy＇s dark matter potential.展开更多
目的:研究降脂颗粒对小鼠非酒精性脂肪性肝炎(NASH)的肝纤维化的作用。方法:雄性C57BL/6小鼠24只,随机分为正常、蛋氨酸-胆碱缺乏(MCD)和降脂颗粒组。正常组小鼠予普通饲料,其余两组小鼠予MCD饲料,降脂颗粒组同时予降脂颗粒灌胃。6周后...目的:研究降脂颗粒对小鼠非酒精性脂肪性肝炎(NASH)的肝纤维化的作用。方法:雄性C57BL/6小鼠24只,随机分为正常、蛋氨酸-胆碱缺乏(MCD)和降脂颗粒组。正常组小鼠予普通饲料,其余两组小鼠予MCD饲料,降脂颗粒组同时予降脂颗粒灌胃。6周后,处死各组动物并取肝组织固定或冻存。观察各组小鼠肝组织天狼猩红染色结果,用ELISA方法检测血清纤溶酶原激活物抑制因子-1(PAI-1)含量,应用荧光定量RT-PCR和/或Western blot检测肝组织PAI-1、转化生长因子-β1(TGF-β1)、α-平滑肌肌动蛋白(α-SMA)及Ⅰ型胶原α1(COL1A1)表达水平。结果:MCD组的肝组织出现广泛肝细胞脂肪变性,及窦周胶原组织增加,而降脂颗粒组肝细胞周围无明显胶原沉积。MCD组小鼠血清PAI-1含量较正常组小鼠显著升高(P<0.001),与MCD组比较,降脂颗粒组PAI-1含量下调(P<0.05)。MCD组小鼠肝组织PAI-1、α-SMA、TGF-β1和COL1A1 m RNA水平均较正常组显著升高(P<0.01,P<0.001),在降脂颗粒组中这些促纤维化基因的表达下调(P<0.05)。与正常组比较,肝组织PAI-1和α-SMA蛋白表达水平在MCD组显著升高,与MCD组比较,在降脂颗粒组表达均显著下调。结论:降脂颗粒对MCD饮食诱导的小鼠NASH肝纤维化具有预防作用,其机制可能与调控NASH中肝纤维化相关因子的表达从而抑制星状细胞活化、胶原增生及促进细胞外基质降解相关。展开更多
基金Research Programme of the Shanghai Municipal Science and Technology Commission(No.06DZ19505)
文摘Objective： To investigate the expressions of plasminogen activator inhibitor type 1 （PAl-1）, C-erbB-2, VEGF and Ki-67 by immunohistostaining and then to evaluate the prognostic value of PAl-1 in node-negative breast cancer. Methods： The study included a retrospective series of 62 female patients with axillary lymph node-negative breast cancer. Expressions of PAl-1, C-erbB-2, VEGF and Ki-67 were determined by immunohistostaining on formalin-fixed paraffin-embedded tissue sections from these patients after a median follow-up of 69 months （range 22-117 months）. Correlations with well known clinicopathologic factors were assessed and multivariate survival analyses were performed. Results： High PAl-1 level was positively associated with high histologic grade of the tumors. Disease-free survival （DFS） was significantly shorter for the patients with moderate to intensive expression of PAl-1 than for those with negative （χ^2 = 25.46, P 〈 0.001; χ^2 = 23.07, P 〈 0.001） to mild expression （χ^2 = 19.75, P 〈 0.001; χ^2 = 17.40, P 〈 0.001）. Although on univariate analysis of the prognostic factors, tumor size, location of primary tumor and age as well as expressions of PAl-1, VEGF and Ki-67 were all significantly prognostic factors for DFS （P 〈 0.05）, PAl-1 was the only independent prognostic factor on multivariate analysis （P 〈 0.0001; hazard ratio [HR], 4.041; 95% confidence interval [CI], 1.928-8.468）. Conclusion： These results of the current study indicate that intermediate or high expression of PAl-1 represents a strong and independent unfavorable prognostic factor for the development of recurrence or metastases in axillary node-negative breast cancer.
基金supported by the National Natural Science Foundation of China(NSFC,Grant Nos.Y011161001,11403056,11673036 and 11333004)Support was provided by the US NSF LAMOST-PLUS grant.Y.Wu acknowledges the fund supplied by the Guangdong Provincial Engineering Technology Research Center for Data Science+1 种基金The Guo Shou Jing Telescope(the Large Sky Area Multi-Object Fiber Spectroscopic Telescope LAMOST) is a National Major Scientific Project built by the Chinese Academy of SciencesFunding for the project has been provided by the National Development and Reform Commission
文摘We present candidate members of the Pal 5, GD-1, Cetus Polar and Orphan tidal stellar streams found in LAMOST DR3, SDSS DR9 and APOGEE catalogs. In LAMOST DR3, we find 20, 4 and 24 high confidence candidates of tidal streams GD-1, Cetus Polar and Orphan respectively. We also list 59, 118 and 10 high confidence candidates of tidal streams Cetus Polar, Orphan and Pal 5, respectively from the SDSS DR9 spectroscopic catalog. Furthermore, we find seven high confidence candidates of the Pal 5 tidal stream in the APOGEE data. Compared with SDSS, the new candidates from LAMOST DR3 are brighter, so that together, more of the color-magnitude diagram, including the giant branch, can be explored. Analysis of the SDSS data shows that there are three metallicity peaks associated with the Orphan stream which also exhibit some spatial separation. The LAMOST data confirm multiple metallicities in this stream. The metallicity, given by the higher resolution APOGEE instrument, of the Pal 5 tidal stream is [Fe/H] ,- -1.2, higher than that given earlier by SDSS spectra. Many previously unidentified stream members are tabulated here for the first time, along with existing members, allowing future researchers to further constrain the orbits of these objects as they move within the Galaxy＇s dark matter potential.
文摘目的:研究降脂颗粒对小鼠非酒精性脂肪性肝炎(NASH)的肝纤维化的作用。方法:雄性C57BL/6小鼠24只,随机分为正常、蛋氨酸-胆碱缺乏(MCD)和降脂颗粒组。正常组小鼠予普通饲料,其余两组小鼠予MCD饲料,降脂颗粒组同时予降脂颗粒灌胃。6周后,处死各组动物并取肝组织固定或冻存。观察各组小鼠肝组织天狼猩红染色结果,用ELISA方法检测血清纤溶酶原激活物抑制因子-1(PAI-1)含量,应用荧光定量RT-PCR和/或Western blot检测肝组织PAI-1、转化生长因子-β1(TGF-β1)、α-平滑肌肌动蛋白(α-SMA)及Ⅰ型胶原α1(COL1A1)表达水平。结果:MCD组的肝组织出现广泛肝细胞脂肪变性,及窦周胶原组织增加,而降脂颗粒组肝细胞周围无明显胶原沉积。MCD组小鼠血清PAI-1含量较正常组小鼠显著升高(P<0.001),与MCD组比较,降脂颗粒组PAI-1含量下调(P<0.05)。MCD组小鼠肝组织PAI-1、α-SMA、TGF-β1和COL1A1 m RNA水平均较正常组显著升高(P<0.01,P<0.001),在降脂颗粒组中这些促纤维化基因的表达下调(P<0.05)。与正常组比较,肝组织PAI-1和α-SMA蛋白表达水平在MCD组显著升高,与MCD组比较,在降脂颗粒组表达均显著下调。结论:降脂颗粒对MCD饮食诱导的小鼠NASH肝纤维化具有预防作用,其机制可能与调控NASH中肝纤维化相关因子的表达从而抑制星状细胞活化、胶原增生及促进细胞外基质降解相关。
