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Hepatic angiotensin-converting enzyme 2 expression in metabolic dysfunction-associated steatotic liver disease and in patients with fatal COVID-19

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World Journal of Gastroenterology 2024年第31期30卷 3705-3716页

作者： Angus K Jacobs Steven D Morley Kay Samuel Katie Morgan Lyndsey Boswell Timothy J Kendall David A Dorward jonathan A Fallowfield Peter C Hayes John N Plevris Hepatology Laboratory University of EdinburghEdinburgh EH164SBUnited Kingdom Scottish National Blood Transfusion Service Jack Copland CentreEdinburgh EH144BEUnited Kingdom Institute for Regeneration and Repair University of EdinburghEdinburgh EH164UUUnited Kingdom Edinburgh Pathology University of EdinburghEdinburgh EH164SBUnited Kingdom

BACKGROUND Metabolic dysfunction-associated steatotic liver disease(MASLD),characterised by hepatic lipid accumulation,causes inflammation and oxidative stress accompanied by cell damage and *** injury(LI)is also frequently reported in patients hospitalised with coronavirus disease 2019(COVID-19),while preexisting MASLD increases the risk of LI and the development of COVID-19-associated *** of injury at the cellular level remain unclear,but it may be significant that severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)which causes COVID-19,uses angiotensin-converting expression enzyme 2(ACE2),a key regulator of the‘anti-inflammatory’arm of the renin-angiotensin system,for viral attachment and host cell *** To determine if hepatic ACE2 levels are altered during progression of MASLD and in patients who died with severe *** ACE2 protein levels and localisation,and histological fibrosis and lipid droplet accumulation as markers of MASLD were determined in formalin-fixed liver tissue sections across the MASLD pathological spectrum(isolated hepatocellular steatosis,metabolic dysfunction-associated steatohepatitis(MASH)+/-fibrosis,end-stage cirrhosis)and in post-mortem tissues from patients who had died with severe COVID-19,using ACE2 immunohistochemistry and haematoxylin and eosin and picrosirius red staining of total collagen and lipid droplet areas,followed by quantification using machine learning-based image pixel *** ACE2 staining is primarily intracellular and concentrated in the cytoplasm of centrilobular hepatocytes and apical membranes of bile duct ***,ACE2 protein levels are elevated in non-fibrotic MASH compared to healthy controls but not in the progression to MASH with fibrosis and in ***2 protein levels and histological fibrosis are not associated,but ACE2 and liver lipid droplet content are significantly correlated across the MASLD *** A

关键词： Metabolic dysfunction-associated steatotic liver disease Angiotensin-converting enzyme 2 Immunohistochemistry COVID-19 COVID-19-associated cholangiopathy

剑桥国际英语教程(第3版)学生用书 [3版]

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Nanofiber matrix formulations for the delivery of Exendin-4 for tendon regeneration: In vitro and in vivo assessment

2007年

作者： jack c. richards，jonathan hull，susan proctor[]

本书按照主题分类，单元练习分为话题性和功能性两类；每2个单元之后有一个复习单元；书的后一部分还有针对各个单元的交际活动和自学听力练习。

ISBN: (纸本)7560062431

本书按照主题分类，单元练习分为话题性和功能性两类；每2个单元之后有一个复习单元；书的后一部分还有针对各个单元的交际活动和自学听力练习。

关键词：英语英语

来源：畅想之星图书光盘版（南... 畅想之星图书光盘版（南... 评论

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Bioactive Materials 2023年第7期25卷 42-60页

作者： Sama Abdulmalik jack Gallo jonathan Nip Sara Katebifar Michael Arul Amir Lebaschi Lucas N.Munch Jenna M.Bartly Shilpa Choudhary Ivo Kalajzic Yeshavanth Kumar Banasavadi-Siddegowdae Syam P.Nukavarapu Sangamesh G.Kumbar Department of Orthopedic Surgery University of Connecticut HealthFarmingtonCTUSA Department of Biomedical Engineering University of ConnecticutStorrsCTUSA Department of Materials Science and Engineering University of ConnecticutStorrsCTUSA Department of Physiology and Neurobiology University of ConnecticutStorrsCTUSA Department of Immunology Center on AgingUniversity of Connecticut HealthFarmingtonCTUSA Department of Reconstructive Sciences University of Connecticut HealthFarmingtonCTUSA Surgical Neurology Branch National Institute of Neurological Disorders and StrokeNational Institutes of HealthBethesdaMDUSA

Tendon and ligament injuries are the most common musculoskeletal injuries,which not only impact the quality of life but result in a massive economic *** interventions for tendon/ligament injuries utilize biological and/or engineered grafts to reconstruct damaged tissue,but these have *** matrices confer superior physicochemical properties over biological grafts but lack desirable bioactivity to promote tissue *** incorporating drugs can enhance bioactivity,large matrix surface areas and hydrophobicity can lead to uncontrolled burst release and/or incomplete release due to *** overcome these limitations,we evaluated the delivery of a peptide growth factor(exendin-4;Ex-4)using an enhanced nanofiber matrix in a tendon injury *** overcome drug surface binding due to matrix hydrophobicity of poly(caprolactone)(PCL)-which would be expected to enhance cell-material interactions-we blended PCL and cellulose acetate(CA)and electrospun nanofiber matrices with fiber diameters ranging from 600 to 1000 *** avoid burst release and protect the drug,we encapsulated Ex-4 in the open lumen of halloysite nanotubes(HNTs),sealed the HNT tube endings with a polymer blend,and mixed Ex-4-loaded HNTs into the polymer mixture before *** reduced burst release from~75%to~40%,but did not alter matrix morphology,fiber diameter,or tensile *** evaluated the bioactivity of the Ex-4 nanofiber formulation by culturing human mesenchymal stem cells(hMSCs)on matrix surfaces for 21 days and measuring tenogenic differentiation,compared with nanofiber matrices in basal media ***,we observed that Ex-4 nanofiber matrices accelerated the hMSC proliferation rate and elevated levels of sulfated glycosaminoglycan,tendon-related genes(Scx,Mkx,and Tnmd),and ECM-related genes(Col-Ⅰ,Col-Ⅲ,and Dcn),compared to *** then assessed the safety and efficacy of Ex-4 nanofiber matrices in a full-thickness rat Achilles tendon

关键词： Nanofiber matrix formulation Protein delivery Soft tissue regeneration Halloysite nanotubes

Treatment of dysplastic Barrett's Oesophagus in lower volume centres after structured training

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World Journal of Gastrointestinal Endoscopy 2015年第1期7卷 66-72页

作者： Georgina Chadwick jack Faulkner Robert Ley-Greaves Panagiotis Vlavianos Rob Goldin jonathan Hoare Department of Gastroenterology St Marys HospitalW2 1NY LondonUnited Kingdom Department of Histopathology St Marys HospitalW2 1NY LondonUnited Kingdom

AIM: To investigate whether dysplastic Barrett's Oesophagus can be safely and effectively treated endoscopically in low volume centres after structured training. METHODS: After attending a structured training program in Amsterdam on the endoscopic treatment of dysplastic Barrett's Oesophagus, treatment of these patients was initiated at St Marys Hospital. This is a retrospective case series conducted at a United Kingdom teaching Hospital, of patients referred for endoscopic treatment of Barrett's oesophagus with high grade dysplasia or early cancer, who were diagnosed between January 2008 and February 2012. Data was collected on treatment provided(radiofrequency ablation and endoscopic resection), and success of treatment both at the end of treatment and at follow up. Rates of immediate and long term complications were assessed. RESULTS: Thirty-two patients were referred to St Marys with high grade dysplasia or intramucosal cancer within a segment of Barrett's Oesophagus. Twentyseven met the study inclusion criteria, 16 of these had a visible nodule at initial endoscopy. Treatment was given over a median of 5 mo, and patients received a median of 3 treatment sessions over this time. At the end of treatment dysplasia was successfully eradicated in 96% and intestinal metaplasia in 88%, on per protocol analysis. Patients were followed up for a median of 18 mo. At which time complete eradication of dysplasia was maintained in 86%. Complications were rare: 2 patients suffered from post-procedural bleeding, 4 cases were complicated by oesophageal stenosis. Recurrence of cancer was seen in 1 case. CONCLUSION: With structured training good outcomes can be achieved in low volume centres treating dysplastic Barrett's Oesophagus.

关键词： Barrett's Oesophagus Oesophageal cancer Endoscopic treatment Radiofrequency ablation Endoscopic resection

New interchange English for international ***'s edition:教师用书-第2版 2

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2005年

作者： jack C. Richards jonathan Hull Susan Proctor

本教材是目前国际上最有影响的综合性英语教材之一，专为非英语国家的学习者而设计，针对初级到高中级水平。本教材采用“交际教学法”，强调在实际交流中培养综合技能，尤其是语言的流利性、灵活性与精确性。既可作为主教材，也可作为... 详细信息

ISBN: (纸本)7560022162

本教材是目前国际上最有影响的综合性英语教材之一，专为非英语国家的学习者而设计，针对初级到高中级水平。本教材采用“交际教学法”，强调在实际交流中培养综合技能，尤其是语言的流利性、灵活性与精确性。既可作为主教材，也可作为视听说教材。

关键词：英语

New interchange English for international ***'s book-第2版 2

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2004年

作者： jack C. Richards jonathan Hull Susan Proctor

Target Tracking and Classification Using Compressive Measurements of MWIR and LWIR Coded Aperture Cameras

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Journal of Signal and Information Processing 2019年第3期10卷 73-95页

作者： Chiman Kwan Bryan Chou jonathan Yang Akshay Rangamani Trac Tran jack Zhang Ralph Etienne-Cummings Applied Research LLC Rockville Maryland USA Google Inc. Mountain View California USA Department of Electrical and Computer Engineering the Johns Hopkins University Baltimore USA Department of Electrical Engineering Massachusetts Institute of Technology Cambridge Massachusetts USA

Pixel-wise Code Exposure (PCE) camera is one type of compressive sensing camera that has low power consumption and high compression ratio. Moreover, a PCE camera can control individual pixel exposure time that can enable high dynamic range. Conventional approaches of using PCE camera involve a time consuming and lossy process to reconstruct the original frames and then use those frames for target tracking and classification. In this paper, we present a deep learning approach that directly performs target tracking and classification in the compressive measurement domain without any frame reconstruction. Our approach has two parts: tracking and classification. The tracking has been done using YOLO (You Only Look Once) and the classification is achieved using Residual Network (ResNet). Extensive experiments using mid-wave infrared (MWIR) and long-wave infrared (LWIR) videos demonstrated the efficacy of our proposed approach.

关键词： Target Tracking Classification Compressive Sensing MWIR LWIR YOLO ResNet Infrared Videos

New interchange English for international communication

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2005年

作者： (美) jack C.Richards jonathan Hull Susan Proctor

本教材主要使用美国英语，但涉及许多国家、地区和文化，它强调在实际交流活动中培养语言，主要活动有主题讨论、语法结构、语言功能、词汇扩展和语言训练。

ISBN: (纸本)7560022049

关键词：英语

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Interchange

1990年

作者： richards jack C.