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Treatment of osteoarthritis by implantation of Mg- and WE43-cylinders - A preclinical study on bone and cartilage changes and their influence on pain sensation in rabbits

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Bioactive Materials 2024年第10期40卷 366-377页

作者： Nina Angrisani christin von der ahe Regine Willumeit-R¨omer Henning Windhagen Verena Scheper Michael Schwarze Bj¨orn Wiese Heike Helmholz Janin Reifenrath Hannover Medical School Clinic for Orthopaedic SurgeryLower Saxony Centre for Biomedical EngineeringImplant Research and Development(NIFE)HannoverLower SaxonyGermany Helmholtz-Zentrum Hereon Institute of Metallic BiomaterialsGeesthachtGermany Hannover Medical School Department of OtolaryngologyLower Saxony Centre for Biomedical EngineeringImplant Research and Development(NIFE)HannoverLower SaxonyGermany Hannover Medical School Clinic for Orthopaedic SurgeryLaboratory for Biomechanics and BiomaterialsHannoverLower SaxonyGermany

With its main features of cartilage degeneration, subchondral bone sclerosis and osteophyte formation, osteoarthritisrepresents a multifactorial disease with no effective treatment options. As biomechanical shift in thetrabecular network may be a driver for further cartilage degeneration, bone enhancement could possibly delayOA progression. Magnesium is known to be osteoconductive and already showed positive effects in OA *** aimed to use magnesium cylinders to enhance subchondral bone quality, condition of cartilage and painsensation compared to sole drilling in vivo. After eight weeks of implantation in rabbits, significant increase insubchondral bone volume and trabecular thickness with constant bone mineral density was found indicatingfavored biomechanics. As representative for pain, a higher number of CD271+ vessels were present in controlsamples without magnesium. However, this result could not be confirmed by sensitive, objective lamenessevaluation using a pressure sensing mat and no positive effect could be shown on either cartilage degenerationevaluated by OARSI score nor the presence of regenerative cells in CD271-stained samples. The presented resultsshow a relevant impact of implanted magnesium on key structures in OA pain with missing clinical relevanceregarding pain. Further studies with shifted focus should examine additional structures as joint capsule orosteophytes.

关键词： Magnesium Subchondral bone In vivo Gait analysis μ-computed tomography CD271

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Transgenic Poplar Plants for the Investigation of ABA-Dependent Salt and Drought Stress Adaptation in Trees

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American Journal of Plant Sciences 2016年第9期7卷 1337-1356页

作者： Domenica Hamisch David Kaufholdt Jennifer-christin Kuchernig Florian Bittner Ralf R. Mendel Robert Hänsch Jennifer Popko Institut für Pflanzenbiologie Technische Universitat Braunschweig Braunschweig Germany Albrecht-von-Haller-Institutfür Pflanzenwissenschaften Abteilung Biochemie der Pflanzen Georg-August-Universitat Gottingen Germany

Important functions of the plant hormone abscisic acid (ABA) in stress reactions, growth and photosynthetic processes are extensively studied in the model plant Arabidopsis thaliana. This paper investigates the importance of Moco-sulphurase ABA3 and aldehyde oxidase (AO) on ABA-biosynthesis in Populus × canescens. ABA3 is essential for activation of the molybdenum enzymes AO and xanthine dehydrogenase (XDH). AO itself catalyzes the last step in ABA-biosynthesis. Generation of transgenic poplar plants altered in ABA3 and AO-activity using RNAi knock down and overexpression was performed. Whereas RNAi-AO plants show a specific loss of AO activity, the RNAi-ABA3 plants has a strongly reduced activity of both molybdenum enzymes: AO and XDH. Constructs of AO and ABA3-promoters fused to β-glucuronidase provide the basis to investigate transcriptional regulation of ABA-biosynthetic processes under stress conditions. Application of high salt concentrations and different drought stress intensities does change the endogenous AO or XDH neither on the side of transcription nor on protein activity. On phytohormone level however, water loss leads to increased ABA-amounts regardless of whether transgenic or wildtype plants are studied. Salt application resulted in higher ABA-levels in all analyzed plant lines. The down regulation of AO in the two different RNAi-plant lines strongly prevented a wildtype-like increase of ABA-levels. Whereas the WT plants accumulated up to 6000 ng ABA g-1 FW-1 after 16 h of salt stress exposure, plants of the RNAi lines revealed a markedly lower increase of only up to 2000 ng ABA g-1 FW-1. Opposing to these observations, ABA-levels increased during drought without any influence by the RNAi-effect. These results revealed that although stresses did not result in a visible increased AO-activity, ABA-production was influenced by AO and ABA3 at least under salinity.

关键词： ABA Biosynthesis Drought Stress Populus × canescens Transgenic Poplar Salt Stress

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79&PARK住宅区

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城市环境设计 2019年第2期118卷 198-209页

作者： H?gni Laksáfoss Agata Wozniczka Agne Tamasauskaite Alberto Herzog Borko Nikolic christin Svensson Claudio Moretti Dominic Black Eva Seo-Andersen Frederik Wegener Gabrielle Nadeau Jacob Lykkefold Aaen Jaime Peiro Suso Jan Magasanik Jesper Boye Andersen Jonas Aars? Larsen Julian Andres Ocampo Salazar Karl Johan Nyqvist Karol Bogdan Borkowski Katarina Mácková Katrine Juul Kristoffer Negendahl Lucian Racovitan Maria Teresa Fernandez Rojo Max Gabriel Pinto Min Ter Lim Narisara Ladawal Schr?der Romea Muryn Ryohei Koike Sergiu Calacean Song He Taylor McNally-Anderson Terrence Chew Thomas Sebastian Krall Tiago Sá Tobias Vall? S?rensen Tore Banke Laurian Ghinitoiu 朱翰林

位于G?rdet国家公园边缘,Kullen有意识地塑造了一个尊重且适应环境的形式,并展现出与众不同的社区和壮丽的景色。为直接回应周围环境,建筑的西北和东南角高起至临近周边的高度;而距离公园最远、且本是视野最不好的东北角被拉高以使其拥... 详细信息

位于G?rdet国家公园边缘,Kullen有意识地塑造了一个尊重且适应环境的形式,并展现出与众不同的社区和壮丽的景色。为直接回应周围环境,建筑的西北和东南角高起至临近周边的高度;而距离公园最远、且本是视野最不好的东北角被拉高以使其拥有公园和港口最壮阔的景色。建筑西南角延伸至最远处的G?rdet国家公园;为了在建筑和自然之间创造一个人性化的柔和边缘,西南角被尽可能地压低,变成

关键词：住宅区

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深圳能源大厦

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建筑实践 2019年第6期 26-33页

作者： Bjarke Ingels Andreas Klok Pedersen Martin Voelkle He Song Andre Schmidt Alessio Zenaro Alina Tamosiunaite Alysen Hiller Ana Merino Andreas Geisler Johansen Annette Jensen Armor Rivas Balaj IIulian Brian Yang Baptiste Blot Buster Christiansen Cecilia Ho Christian Alvarez christin Svensson Claudia Hertrich Claudio Moretti Cory Mattheis Dave Brown Dennis Rasmussen Doug Stechschulte Eskild Nordbud Felicia Guldberg Fred Zhou Gaetan Brunet Gül Ertekin Henrik Kania Iris Van der Heide James Schrader Jan Magasanik Jan Borgstr?m Jeppe Ecklon Jelena Vucic Jo?o Albuquerque Jonas M?nster Karsten Hansen Malte Kloe Mikkel Marcker Stubgaard Michael Andersen Michal Kristof Min Ter Lim Oana Simionescu Nicklas A. Rasch Philip Sima Rasmus Pedersen Rune Hansen Rui Huang Sofia Gaspar Stanley Lung Sun Ming Lee Takuya Hosokai Todd Bennett Xi Chen Xing Xiong Xiao Lu Xu Li Yijie Dan Zoltan Kalaszi BIG

深圳能源公司办公楼项目总建筑面积为96000m2,旨在让人在深圳的文化、政治和商业中心感到亲切的同时,在城市主轴线上建造一座可持续的新公共地标。本项目的体量和高度由中心区城市总体规划决定。主体建筑由两座塔楼组成,北楼高220m,南楼... 详细信息

深圳能源公司办公楼项目总建筑面积为96000m2,旨在让人在深圳的文化、政治和商业中心感到亲切的同时,在城市主轴线上建造一座可持续的新公共地标。本项目的体量和高度由中心区城市总体规划决定。主体建筑由两座塔楼组成,北楼高220m,南楼高120m,两座塔楼与邻近建筑的塔楼一起在深圳的中心形成一个连续的弧形天际线。在建筑底部,两座塔楼通过一个34m长,包括大厅、会议中心、自助餐厅和展览空间功

关键词： Michael 建筑面积建筑实践

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