目的探讨涎腺腺样囊性癌微血管参数与肿瘤微血管模式之间的相关性。方法收集2005年1月至2015年7月我院涎腺腺样囊性癌患者(SACC组)148例,正常腮腺组织(对照组)50例,采用免疫组化染色方法检测两组受检者的转录活化因子-3(STAT3)、血管内...目的探讨涎腺腺样囊性癌微血管参数与肿瘤微血管模式之间的相关性。方法收集2005年1月至2015年7月我院涎腺腺样囊性癌患者(SACC组)148例,正常腮腺组织(对照组)50例,采用免疫组化染色方法检测两组受检者的转录活化因子-3(STAT3)、血管内皮生长因子(VEGF)m RNA及蛋白表达水平,分析其与微血管密度(MVD)之间的相关性。结果 SACC组患者的STAT3和VEGF阳性表达率分别为32.0%和40.0%,均明显高于对照组的19.0%和18.0%,差异均具有统计学意义(P<0.05);SACC组患者的STAT3、VEGF m RNA表达水平分别为(1.12±0.56)和(1.10±0.29),均明显高于对照组的(0.82±0.31)和(0.72±0.26),差异均具有统计学意义(P<0.05);SACC组患者的STAT3、VEGF蛋白表达(3.23±1.99、2.56±1.86)与对照组(1.96±0.86、1.99±0.86)比较差异具有统计学意义(P<0.05);STAT3及VEGF在SACC组中不同类型组织、有无淋巴结转移、TNM分期方面比较差异均具有统计学意义(P<0.05);STAT3与VEGF表达呈正相关(r=0.85);STAT3及VEGF蛋白表达水平与MVD差异表达具有相关性(r=0.63,0.85)。结论涎腺腺样囊性癌微血管参数STAT3与VEGF与肿瘤微血管模式MVD之间具有相关性,在调控涎腺腺样囊性癌的血管生成方面,有望作为治疗靶点。展开更多
This study focused on the evolution of growth front about AlN growth on nano-patterned sapphire substrate by metal-organic chemical vapor deposition.The substrate with concave cones was fabricated by nano-imprint lith...This study focused on the evolution of growth front about AlN growth on nano-patterned sapphire substrate by metal-organic chemical vapor deposition.The substrate with concave cones was fabricated by nano-imprint lithography and wet etching.Two samples with different epitaxy procedures were fabricated,manifesting as two-dimensional growth mode and three-dimensional growth mode,respectively.The results showed that growth temperature deeply influenced the growth modes and thus played a critical role in the coalescence of AlN.At a relatively high temperature,the AlN epilayer was progressively coalescence and the growth mode was two-dimensional.In this case,we found that the inclined semi-polar facets arising in the process of coalescence were{112^-1}type.But when decreasing the temperature,the{112^-2}semi-polar facets arose,leading to inverse pyramid morphology and obtaining the three-dimensional growth mode.The 3 D inverse pyramid AlN structure could be used for realizing 3 D semi-polar UV-LED or facet-controlled epitaxial lateral overgrowth of AlN.展开更多
Crystal morphology is known to be of great importance to the end-use properties of crystal products, and to affect down-stream processing such as filtration and drying. However, it has been previously regarded as too ...Crystal morphology is known to be of great importance to the end-use properties of crystal products, and to affect down-stream processing such as filtration and drying. However, it has been previously regarded as too challenging to achieve automatic closed-loop control. Previous work has focused on controlling the crystal size distribution, where the size of a crystal is often defined as the diameter of a sphere that has the same volume as the crystal. This paper reviews the new advances in morphological population balance models for modelling and simulating the crystal shape distribution （CShD）, measuring and estimating crystal facet growth kinetics, and two- and three-dimensional imaging for on-line characterisation of the crystal morphology and CShD. A framework is presented that integrates the various components to achieve the ultimate objective of model-based closed-loop control of the CShD. The knowledge gaps and challenges that require further research are also identified.展开更多
文摘目的探讨涎腺腺样囊性癌微血管参数与肿瘤微血管模式之间的相关性。方法收集2005年1月至2015年7月我院涎腺腺样囊性癌患者(SACC组)148例,正常腮腺组织(对照组)50例,采用免疫组化染色方法检测两组受检者的转录活化因子-3(STAT3)、血管内皮生长因子(VEGF)m RNA及蛋白表达水平,分析其与微血管密度(MVD)之间的相关性。结果 SACC组患者的STAT3和VEGF阳性表达率分别为32.0%和40.0%,均明显高于对照组的19.0%和18.0%,差异均具有统计学意义(P<0.05);SACC组患者的STAT3、VEGF m RNA表达水平分别为(1.12±0.56)和(1.10±0.29),均明显高于对照组的(0.82±0.31)和(0.72±0.26),差异均具有统计学意义(P<0.05);SACC组患者的STAT3、VEGF蛋白表达(3.23±1.99、2.56±1.86)与对照组(1.96±0.86、1.99±0.86)比较差异具有统计学意义(P<0.05);STAT3及VEGF在SACC组中不同类型组织、有无淋巴结转移、TNM分期方面比较差异均具有统计学意义(P<0.05);STAT3与VEGF表达呈正相关(r=0.85);STAT3及VEGF蛋白表达水平与MVD差异表达具有相关性(r=0.63,0.85)。结论涎腺腺样囊性癌微血管参数STAT3与VEGF与肿瘤微血管模式MVD之间具有相关性,在调控涎腺腺样囊性癌的血管生成方面,有望作为治疗靶点。
基金supported by the National Key R&D Program of China (No. 2016YFB0400800)the National Natural Sciences Foundation of China (Grant Nos. 61875187, 61527814, 61674147, U1505253)+1 种基金Beijing Nova Program Z181100006218 007Youth Innovation Promotion Association CAS 2017157
文摘This study focused on the evolution of growth front about AlN growth on nano-patterned sapphire substrate by metal-organic chemical vapor deposition.The substrate with concave cones was fabricated by nano-imprint lithography and wet etching.Two samples with different epitaxy procedures were fabricated,manifesting as two-dimensional growth mode and three-dimensional growth mode,respectively.The results showed that growth temperature deeply influenced the growth modes and thus played a critical role in the coalescence of AlN.At a relatively high temperature,the AlN epilayer was progressively coalescence and the growth mode was two-dimensional.In this case,we found that the inclined semi-polar facets arising in the process of coalescence were{112^-1}type.But when decreasing the temperature,the{112^-2}semi-polar facets arose,leading to inverse pyramid morphology and obtaining the three-dimensional growth mode.The 3 D inverse pyramid AlN structure could be used for realizing 3 D semi-polar UV-LED or facet-controlled epitaxial lateral overgrowth of AlN.
基金Financial support from the following projects and organisa- tions are acknowledged： the China One Thousand Talent Scheme, the National Natural Science Foundation of China （NNSFC） under its Major Research Scheme of Meso-scale Mechanism and Control in Multi-phase Reaction Processes （project reference： 91434126）, the Natural Science Foundation of Guangdong Province （project reference： 2014A030313228）, the UK Engineering and Physical Sciences Research Council （EPSRC） for the projects of Shape （EP/C009541） and StereoVision （EP/E045707）, and the Technology Strategy Board （TSB） for the project of High Value Manufacturing CGM （TP/BD059E）.
文摘Crystal morphology is known to be of great importance to the end-use properties of crystal products, and to affect down-stream processing such as filtration and drying. However, it has been previously regarded as too challenging to achieve automatic closed-loop control. Previous work has focused on controlling the crystal size distribution, where the size of a crystal is often defined as the diameter of a sphere that has the same volume as the crystal. This paper reviews the new advances in morphological population balance models for modelling and simulating the crystal shape distribution （CShD）, measuring and estimating crystal facet growth kinetics, and two- and three-dimensional imaging for on-line characterisation of the crystal morphology and CShD. A framework is presented that integrates the various components to achieve the ultimate objective of model-based closed-loop control of the CShD. The knowledge gaps and challenges that require further research are also identified.
