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Assessment of vascular invasion in gastric cancer: A comparative study

World Journal of Gastroenterology 2013年第24期19卷 3761-3769页

作者： Letícia Trivellato Gresta Ismael Alves Rodrigues-Júnior Lúcia Porto Fonseca de Castro Geovanni Dantas Cassali Mnica Maria Demas lva-res Cabral Department of Anatomic Pathology and Medicine University Federal of Minas GeraisBelo Horizonte 30130-100 Brazil Institute of Biological sciences University Federal of Minas GeraisBelo Horizonte 31270-901 Brazil

AIM: To evaluate and compare detection of lymphatic and blood vessel invasion (LVI and BVI) by hematox-ylin-eosin (HE) and immunohistochemistry (IHC) in gastric cancer specimens, and to correlate with lymph node status. METHODs: IHC using D2-40 (a lymphatic endothelial marker) and CD34 (a pan-endothelial marker) was performed to study LVI and BVI in surgical specimens froma consecutive series of 95 primary gastric cancer cases. The results of the IHC study were compared with the detection by HE using McNemar test and kappa index. The morphologic features of the tumors and the presence of LVI and BVI were related to the presence of lymph node metastasis. A χ2 test was performed to obtain associations between LVI and BVI and other prognostic factors for gastric cancer. REsULTs: The detection rate of LVI was considerably higher than that of BVI. The IHC study identified eight false-positive cases and 13 false-negative cases for LVI, and 24 false-positive cases and 10 false-negative cases for BVI. The average Kappa value determined was moderate for LVI (k=0.50) and low for BVI (k=0.20). Both LVI and BVI were statistically associated with the presence of lymph node metastasis (HE: P=0.001, P=0.013, and IHC: P=0.001, P=0.019). The mor-phologic features associated with LVI were location of the tumor in the distal third of the stomach (P=0.039), Borrmann's macroscopic type (P=0.001), organ inva-sion (P=0.03) and the depth of tumor invasion (P=0.001). The presence of BVI was related only to the depth of tumor invasion (P=0.003). CONCLUsION: The immunohistochemical identification of lymphatic and blood vessels is useful for increasing the accuracy of the diagnosis of vessel invasion and for predicting lymph node metastasis.

关键词： Gastric cancer Tumour-node-metastesis staging Lymph node metastasis Predictive factor Lymphatic vessel invasion Blood vessel invasion Immunohistochemistry CD34 D2-40

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Terahertz structured light:nonparaxial Airy imaging using silicon diffractive optics

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Light(science & Applications) 2022年第12期11卷 2909-2921页

作者： Rusne Ivaskeviciute-Povilauskiene Paulius Kizevicius Ernestas Nacius Domas Jokubauskis Kestutis Ikamas Alvydas Lisauskas Natalia Alexeeva Ieva Matulaitiene Vytautas Jukna sergej Orlov Linas Minkevicius Gintaras Valusis Department of Optoelectronics Center for Physical Sciences and TechnologySauletekio av.3Vilnius 10257Lithuania Department of Fundamental Research Center for Physical Sciences and TechnologySaulėtekio av.3Vilnius 10257Lithuania Institute of Applied Electrodynamics&Telecommunications Vilnius UniversitySaulėtekio av.3Vilnius 10257Lithuania CENTERA Labs. Institute of High Pressure Physics PASul.Sokolowska 29/37Warsaw 01-142Poland Department of Organic Chemistry Center for Physical Sciences and TechnologySaulėtekio av.3Vilnius 10257Lithuania Institute of Photonics and Nanotechnology Department of PhysicsVilnius UniversitySaulėtekio av.3Vilnius 10257Lithuania

structured light–electromagnetic waves with a strong spatial inhomogeneity of amplitude,phase,and polarization–has occupied far-reaching positions in both optical research and ***(THz)waves,due to recent innovations in photonics and nanotechnology,became so robust that it was not only implemented in a wide variety of applications such as communications,spectroscopic analysis,and non-destructive imaging,but also served as a low-cost and easily implementable experimental platform for novel concept *** this work,we show that structured nonparaxial THz light in the form of Airy,Bessel,and Gaussian beams can be generated in a compact way using exclusively silicon diffractive optics prepared by femtosecond laser ablation *** accelerating nature of the generated structured light is demonstrated via THz imaging of objects partially obscured by an opaque beam *** conventional paraxial approaches,when a combination of a lens and a cubic phase(or amplitude)mask creates a nondiffracting Airy beam,we demonstrate simultaneous lensless nonparaxial THz Airy beam generation and its application in imaging *** of single objects,imaging with a controllable placed obstacle,and imaging of stacked graphene layers are presented,revealing hence potential of the approach to inspect quality of 2D *** nonparaxial THz illumination is investigated both theoretically and experimentally with appropriate extensive *** structured THz illumination consistently outperforms the conventional one in resolution and contrast,thus opening new frontiers of structured light applications in imaging and inverse scattering problems,as it enables sophisticated estimates of optical properties of the investigated structures.

关键词： polarization axial optics

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利咽雾化液抗炎抑菌作用的实验观察

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中国中西医结合耳鼻咽喉科杂志 2005年第1期13卷 13-16页

作者：张虎张建基张子和程璐郑洪玲山东省章丘市人民医院 250200 山东省济南市儿童医院

目的观察利咽雾化液抗炎抑菌作用效果,验证其安全性。方法给健康小鼠灌胃相当于临床人用量的102倍的药量,验证其安全性;采用二甲苯引起小鼠耳廓肿胀、角叉菜胶引起大鼠足趾肿胀的炎症模型,观察其抗炎作用;采用杯碟法测定利咽雾化液对... 详细信息

目的观察利咽雾化液抗炎抑菌作用效果,验证其安全性。方法给健康小鼠灌胃相当于临床人用量的102倍的药量,验证其安全性;采用二甲苯引起小鼠耳廓肿胀、角叉菜胶引起大鼠足趾肿胀的炎症模型,观察其抗炎作用;采用杯碟法测定利咽雾化液对临床分离的46株临床常见的革兰氏阴性菌和革兰氏阳性菌的体外抗菌作用。结果利咽雾化液对动物无明显毒性,LD50大于144g/kg;对二甲苯引起的小鼠耳廓肿胀及角叉菜胶引起的大鼠足趾肿胀有较好的抗炎作用,体外抑菌实验可见利咽雾化液对临床常见的革兰氏阴性菌和革兰氏阳性菌均具有一定的抑制作用。结论利咽雾化液具有较好的抗炎、抑菌作用,且安全性高。

关键词：利咽雾化液抗炎小鼠常见耳廓肿胀足趾角叉菜胶动物抑菌作用

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