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Converting lateral scanning into axial focusing to speed up three-dimensional microscopy

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Light(Science & Applications) 2020年第1期9卷 429-440页

作者： Tonmoy Chakraborty Bingying Chen Stephan Daetwyler Bo-Jui Chang Oliver Vanderpoorten Etai Sapoznik Clemens F.Kaminski Tuomas P.J.Knowles Kevin m.Dean reto Fiolka Department of Cell Biology UT Southwestern Medical CenterDallasTXUSA Department of Physics and Astronomy University of New MexicoAlbuquerqueNMUSA Department of Chemical Engineering and Biotechnology University of CambridgeCambridge CB30ASUK Department of Chemistry University of CambridgeLensfield RoadCambridge CB21EWUK Lyda Hill Department of Bioinformatics UT Southwestern Medical CenterDallasTXUSA

In optical microscopy,the slow axial scanning rate of the objective or the sample has traditionally limited the speed of volumetric ***,by conjugating either a movable mirror to the image plane in a remote-focusing geometry or an electrically tuneable lens(ETL)to the back focal plane,rapid axial scanning has been ***,mechanical actuation of a mirror limits the axial scanning rate(usually only 10–100 Hz for piezoelectric or voice coil-based actuators),while ETLs introduce spherical and higher-order aberrations that prevent high-resolution *** an effort to overcome these limitations,we introduce a novel optical design that transforms a lateral-scan motion into a spherical aberration-free axial scan that can be used for high-resolution *** a galvanometric mirror,we scan a laser beam laterally in a remote-focusing arm,which is then back-reflected from different heights of a mirror in the image *** characterize the optical performance of this remote-focusing technique and use it to accelerate axially swept light-sheet microscopy by an order of magnitude,allowing the quantification of rapid vesicular dynamics in three *** also demonstrate resonant remote focusing at 12 kHz with a two-photon raster-scanning microscope,which allows rapid imaging of brain tissues and zebrafish cardiac dynamics with diffraction-limited resolution.

关键词： mirror axial image

Green Tea(Camellia sinensis):Hypocholesterolemic Effects in Humans and Anti-Inflammatory Effects in Animals

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Food and Nutrition Sciences 2014年第22期5卷 2185-2194页

作者： márcia reto Cristina Almeida Joao Rocha Bruno Sepodes maria-Eduardo Figueira Research Institute for medicines(imed.ULisboa) Faculty of PharmacyUniversity of LisbonLisbonPortugal

In its essence, tea is an infusion of Camellia sinensis leaves and it is the most widely consumed beverage in the world, aside water. Animal and epidemiological studies have associated green tea consumption with several health benefits, which include hypocholesterolemic effect and anti-in-flammatory activity. In this study catechins levels of green tea and its effect on the lipid profile of humans were evaluated as well as the protective effects against H2O2-mediated damage in human fibroblasts and anti-inflammatory activity of (–)-epigallocatechingallate (EGCG). The daily consumption of 1200 mL of green tea for 30 days by 15 human volunteers promoted the decrease of cholesterol and LDL levels after 15 days, but this effect was not persistent after 30 days. No changes were observed in lipid profile after the consumption of green tea capsules. EGCG, a major green tea catechin, demonstrated an anti-inflammatory action in rats and an antioxidant effect in cultured human fibroblasts.

关键词： Green Tea Infusions Hypocholesterolemic Effect Anti-Inflammatory Activity Antioxidant Activity

microparticles released by Listeria monocytogenes-infected macrophages are required for dendritic cell-elicited protective immunity

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Cellular & molecular Immunology 2012年第6期9卷 489-496页

作者： Yi Zhang Ruihua Zhang Huafeng Zhang Jing Liu Zhuoshun Yang Pingwei Xu Wenqian Cai Geming Lu miao Cui reto A Schwendener Huang-Zhong Shi Huabao Xiong Bo Huang Department of Biochemistryand molecular Biology Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina Immunology Institute Mount Sinai School of MedicineNewYorkNYUSA Laboratory of Liposome Research Institute of Molecular Cancer ResearchUniversity of ZurichZurichSwitzerland Department of Respiratory Diseases Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina

Interplay between macrophages and dendritic cells in the processing and presentation of bacterial antigens for T-cell immune responses remains poorly understood. Using a Listeria monocytogenes （Lm） infection model, we demonstrate that dendritic cells （DCs） require the support of macrophages to elicit protective immunity against Lm infection. DCs themselves were inefficient at taking up Lm but capable of taking up microparticles （mPs） released by Lm-infected macrophages. These mPs transferred Lm antigens to DCs, allowing DCs to present Lm antigen to effector T cells. mP-mediated Lm antigen transfer required m HC class I participation, since m HC class I deficiency in macrophages resulted in a significant reduction of T-cell activation. moreover, the vaccination of mice with mPs from Lm-infected macrophages produced strong protective immunity against Lm infection. We here identify an intrinsic antigen transfer program between macrophages and DCs during Lm infection, and emphasize that macrophages also play an essential role in DC-elicited Lm-specific T-cell responses.

关键词： dendritic cell Listeria monocytogenes microparticles macrophage protective immunity

马克斯·普朗克创新与竞争研究所就欧盟委员会“关于构建欧洲数据经济征求意见书”的立场声明

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电子知识产权 2017年第7期 92-100页

作者： Josef Drexl reto m.Hilty Jure Globocnik Franziska Greiner Daria Kim Heiko Richter Peter R.Slowinski Gintar? Surblyt? Axel Walz Klaus Wiedemann 刘维张嘉莹马克斯.普朗克创新与竞争研究所上海交通大学凯原法学院上海大学法学院

马克斯·普朗克创新与竞争研究所是一家在马克斯·普朗克学会之下设立的研究机构,自五十一年前设立以来,一直致力于在既已确立的科学原理基础之上对知识产权和竞争法的分析与发展进行研究.马克斯·普朗克创新与竞争研究所承担着该领域... 详细信息

马克斯·普朗克创新与竞争研究所是一家在马克斯·普朗克学会之下设立的研究机构,自五十一年前设立以来,一直致力于在既已确立的科学原理基础之上对知识产权和竞争法的分析与发展进行研究.马克斯·普朗克创新与竞争研究所承担着该领域内基础问题的研究.基于其卓著的研究贡献,马克斯·普朗克创新与竞争研究所发起并引领着德国、欧洲以及国际层面重要的立法及理论研究。

关键词：普朗克马克斯竞争法研究所欧盟委员会创新欧洲意见书