Investigation Of The Hepatitis C Virus Rna Polymerase Ns5b In Solution By Nuclear Magnetic Resonance And Its Interaction With Intrinsically Disordered Domain 2 Of The Ns5a Protein

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Investigation of the Hepatitis C Virus RNA Polymerase NS5B in Solution by Nuclear Magnetic Resonance and Its Interaction with Intrinsically Disordered Domain 2 of the NS5A Protein

Author : Luíza Mamigonian Bessa
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (124 download)

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Book Synopsis Investigation of the Hepatitis C Virus RNA Polymerase NS5B in Solution by Nuclear Magnetic Resonance and Its Interaction with Intrinsically Disordered Domain 2 of the NS5A Protein by : Luíza Mamigonian Bessa

Download or read book Investigation of the Hepatitis C Virus RNA Polymerase NS5B in Solution by Nuclear Magnetic Resonance and Its Interaction with Intrinsically Disordered Domain 2 of the NS5A Protein written by Luíza Mamigonian Bessa and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: NS5B is the hepatitis C virus (HCV) RNA-dependent RNA polymerase. This protein has been extensively studied by X-ray crystallography and shows an organization in three subdomains called fingers, palm and thumb. Whereas static crystallographic data are abundant, structural studies of this protein in solution are limited. Nuclear magnetic resonance (NMR) spectroscopy was used to study the 65 kDa NS5B in solution as well as its interaction with binding partners. It was characterized using selective isotopic labeling of isoleucine side-chain methyl groups, which gives rise to a simplified NMR spectrum with an improved signal-to-noise ratio. This characterization confirmed the presence of particular dynamics in the subdomains, especially in the thumb, as well as long-range effects that are transmitted through to other subdomains. Furthermore, this system was used to investigate the binding of the domain 2 of NS5A (NS5A-D2), a disordered domain of another HCV protein that has been shown to directly interact with NS5B in vitro. With paramagnetic relaxation enhancement experiments we showed that NS5A-D2 binds to NS5B via, at least, two binding sites on the thumb subdomain. As one of these sites was the binding site of allosteric inhibitor filibuvir, we characterized the binding of this small molecule to NS5B by NMR and found long-range effects of its binding throughout the polymerase. Finally, we studied the binding of a small RNA template strand to NS5B and found that both NS5A-D2 and filibuvir reduce but do not abolish the interaction between the polymerase and RNA. In sum, NMR spectroscopy was used to study dynamic properties of NS5B and its interactions with binding partners.

NMR Methods for Intrinsically Disordered Proteins

Author : Zsofia Burkart-Solyom
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (953 download)

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Book Synopsis NMR Methods for Intrinsically Disordered Proteins by : Zsofia Burkart-Solyom

Download or read book NMR Methods for Intrinsically Disordered Proteins written by Zsofia Burkart-Solyom and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Intrinsically disordered proteins are characterized by a lack of a stable, 3D structure and fulfill their biological role as such. NMR spectroscopy is the method of choice for their atomic resolution studies, as X-ray crystallography is not amenable to them due to their highly dynamic character.However, NMR spectroscopic studies of these proteins are challenging, because of the high extent of signal overlap in the spectra, resulting from the absence of a hydrogen-bonding network that would lead to structuring and higher signal dispersion. A further problem is experimental sensitivity as often measurement time is limited due to their predisposition for proteolytic degradation. In the fist part of this thesis intrinsically disordered proteins are introduced. The second part focuses on NMR spectroscopy of IDPs, BEST-TROSY-type NMR methods are presented and are shown to be well suited for large IDPs, especially for those with high extent of residual structure. 3D BEST-TROSY experiments are presented for assignment, a proline-edited version for aiding amino acid-type identification, and the HETex-BEST-TROSY experiment that allows rapid measurement of solvent exchange rates. In the third part of this thesis NMR methods are applied for study of the entire intrinsically disordered region (domains 2 and 3) of NS5A protein of hepatitis C virus. The residual secondary structure in this protein fragment is analyzed. Comparison of NMR data on three protein constructs of different lengths together with SAXS data allows identification of transient long range interactions between different regions of this protein. Furthermore, the binding modes of this protein fragment to Bin1 SH3 domain are analyzed. Finally, the preliminary results obtained on investigation of phosphorylation of NS5A of HCV by certain kinases, reported to be biologically relevant, are presented.

Flexible Viruses

Author : Vladimir Uversky
Publisher : John Wiley & Sons
ISBN 13 : 0470618310
Total Pages : 532 pages
Book Rating : 4.4/5 (76 download)

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Book Synopsis Flexible Viruses by : Vladimir Uversky

Download or read book Flexible Viruses written by Vladimir Uversky and published by John Wiley & Sons. This book was released on 2012-02-07 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides up-to-date information on experimental and computational characterization of the structural and functional properties of viral proteins, which are widely involved in regulatory and signaling processes. With chapters by leading research groups, it features current information on the structural and functional roles of intrinsic disorders in viral proteomes. It systematically addresses the measles, HIV, influenza, potato virus, forest virus, bovine virus, hepatitis, and rotavirus as well as viral genomics. After analyzing the unique features of each class of viral proteins, future directions for research and disease management are presented.

Fuzziness

Author : Monika Fuxreiter
Publisher : Springer Science & Business Media
ISBN 13 : 1461406595
Total Pages : 210 pages
Book Rating : 4.4/5 (614 download)

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Book Synopsis Fuzziness by : Monika Fuxreiter

Download or read book Fuzziness written by Monika Fuxreiter and published by Springer Science & Business Media. This book was released on 2012-03-07 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: Detailed characterization of fuzzy interactions will be of central importance for understanding the diverse biological functions of intrinsically disordered proteins in complex eukaryotic signaling networks. In this volume, Peter Tompa and Monika Fuxreiter have assembled a series of papers that address the issue of fuzziness in molecular interactions. These papers provide a broad overview of the phenomenon of fuzziness and provide compelling examples of the central role played by fuzzy interactions in regulation of cellular signaling processes and in viral infectivity. These contributions summarize the current state of knowledge in this new field and will undoubtedly stimulate future research that will further advance our understanding of fuzziness and its role in biomolecular interactions.

Pediatric Hepatology and Liver Transplantation

Author : Lorenzo D'Antiga
Publisher : Springer
ISBN 13 : 3319964003
Total Pages : 829 pages
Book Rating : 4.3/5 (199 download)

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Book Synopsis Pediatric Hepatology and Liver Transplantation by : Lorenzo D'Antiga

Download or read book Pediatric Hepatology and Liver Transplantation written by Lorenzo D'Antiga and published by Springer. This book was released on 2019-04-29 with total page 829 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is the first to provide balanced examination of both pediatric liver disease and liver transplantation – two topics that are inherently related, given that most chronic liver disorders eventually require organ replacement. The different forms of liver disease encountered in the pediatric age group are first discussed in a series of disease-specific chapters that have a reader-friendly, uniform structure covering pathophysiology, diagnostic and treatment algorithms, clinical cases, and transition to adult care. Key topics in the field of liver transplantation are then addressed. Examples include indications and contraindications, surgical techniques and complications, immunosuppression, in pediatric liver transplantation, acute and chronic rejection and allograft dysfunction, and CMV and EBV infection in transplant recipients, long-term graft injury and tolerance. A section on pediatric hepatology across the world includes chapters presenting the features and management of pediatric liver disease in South-America, Africa and Asia. A closing section considers what the future holds for pediatric liver disease and its management, including novel genetic testing, cell therapy and gene therapy. Pediatric Hepatology and Liver Transplantation will be of value for a range of practitioners, from residents making their first approach to pediatric liver disease through to specialists working in transplantation centers.

Dancing Protein Clouds: Intrinsically Disordered Proteins in the Norm and Pathology

Author : Vladimir Uversky
Publisher : Academic Press
ISBN 13 : 012816851X
Total Pages : 426 pages
Book Rating : 4.1/5 (281 download)

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Book Synopsis Dancing Protein Clouds: Intrinsically Disordered Proteins in the Norm and Pathology by : Vladimir Uversky

Download or read book Dancing Protein Clouds: Intrinsically Disordered Proteins in the Norm and Pathology written by Vladimir Uversky and published by Academic Press. This book was released on 2019-09-15 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Dancing protein clouds: Intrinsically disordered proteins in the norm and pathology" represents a set of selected studies on a variety of research topics related to intrinsically disordered proteins. Topics in this update include structural and functional characterization of several important intrinsically disordered proteins, such as 14-3-3 proteins and their partners, as well as proteins from muscle sarcomere; representation of intrinsic disorder-related concept of protein structure-function continuum; discussion of the role of intrinsic disorder in phenotypic switching; consideration of the role of intrinsically disordered proteins in the pathogenesis of neurodegenerative diseases and cancer; discussion of the roles of intrinsic disorder in functional amyloids; demonstration of the usefulness of the analysis of translational diffusion of unfolded and intrinsically disordered proteins; consideration of various computational tools for evaluation of functions of intrinsically disordered regions; and discussion of the role of shear stress in the amyloid formation of intrinsically disordered regions in the brain. Provides some recent studies on the intrinsically disordered proteins and their functions, as well as on the involvement of intrinsically disordered proteins in pthogenesis of various diseases Contains numerous illustrative materials (color figures, diagrams, and tables) to help the readers to delve in the information provided Includes contributions from recognized experts in the field

Virus Protein and Nucleoprotein Complexes

Author : J. Robin Harris
Publisher : Springer
ISBN 13 : 9811084564
Total Pages : 443 pages
Book Rating : 4.8/5 (11 download)

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Book Synopsis Virus Protein and Nucleoprotein Complexes by : J. Robin Harris

Download or read book Virus Protein and Nucleoprotein Complexes written by J. Robin Harris and published by Springer. This book was released on 2018-06-13 with total page 443 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Subcellular Biochemistry series has recently embarked upon an almost encyclopaedic coverage of topics relating to the structure and function of macromolecular complexes (Volumes 82, 83 and 87). The present multi-author text covers numerous aspects of current research into molecular virology, with emphasis upon viral protein and nucleoprotein structure and function. Structural data from cryo-electron microscopy and X-ray crystallography is displayed throughout the book. The 17 chapters in the book cover diverse interesting topics, all currently under investigation, contributed by authors who are active actively involved in present-day research. Whilst structural aspects predominate, there is much consideration of the structure-function relationship. In addition, the book correlates with and extends from Volume 68 of the series “Structure and Physics of Viruses: An Integrated Textbook”. This book is directed primarily at professionals that work in the broad field of Structural Biology and will be of particular interest to Structural Virologists. The editors, David Bhella and Robin Harris, have much experience in virology and protein structure, respectively. Dr Bhella is Director of the Scottish Macromolecular Imaging Centre. Professor Robin Harris is the long-standing Series Editor of the Subcellular Biochemistry series. He has edited and contributed to several books in the series.

New Frontiers in Organoselenium Compounds

Author : Eder João Lenardão
Publisher : Springer
ISBN 13 : 3319924052
Total Pages : 194 pages
Book Rating : 4.3/5 (199 download)

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Book Synopsis New Frontiers in Organoselenium Compounds by : Eder João Lenardão

Download or read book New Frontiers in Organoselenium Compounds written by Eder João Lenardão and published by Springer. This book was released on 2018-06-29 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents recent advances in and perspectives on the use of organoselenium compounds, primarily highlighting the new frontiers in the field of Green Chemistry, their therapeutic and biological relevance and new materials. Throughout its 200 pages, readers will find an updated and comprehensive review of new aspects of organoselenium chemistry and biochemistry. Fully referenced and written in an easy to read style, it offers readers a primary resource for including organoselenium derivatives in their projects. This book will be of interest to specialists, students and researchers involved in a broad range of fields, from synthetic green chemistry to medicinal chemistry and the chemistry of natural products. The connection between organoselenium compounds and green chemistry, despite having only recently emerged, is one of the subjects of this book. The first chapter highlights the use of Se-containing molecules as reagents and catalysts in new green protocols to access important organic transformations. The book provides a wealth of examples of bioactive Se-containing molecules, especially focusing on those with potential therapeutic uses. The second chapter focuses on the state of the art concerning the role of organoselenium compounds as antioxidants, GPx mimics, and derivatives endowed with different bioactive properties. “Organoselenium in nature” is the title of the third chapter, which equips readers with essential information on the main natural organoselenium compounds and where they are found. Selected aspects of the metabolism of selenium in plants and microorganisms are also discussed. In closing, the book includes a chapter dedicated to recent advances concerning the nonbonding interactions between organochalcogen compounds. This is currently a hot topic in selenium chemistry and biochemistry, and here readers will find key insights into the chalcogen bond and its role in the biological activity of organoselenium compounds.

ISCOMS - Book of Abstracts

Author :
Publisher : ISCOMS
ISBN 13 : 9036722969
Total Pages : 330 pages
Book Rating : 4.0/5 (367 download)

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Book Synopsis ISCOMS - Book of Abstracts by :

Download or read book ISCOMS - Book of Abstracts written by and published by ISCOMS. This book was released on 2005 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Protein Allostery in Drug Discovery

Author : Jian Zhang
Publisher : Springer Nature
ISBN 13 : 9811387192
Total Pages : 384 pages
Book Rating : 4.8/5 (113 download)

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Book Synopsis Protein Allostery in Drug Discovery by : Jian Zhang

Download or read book Protein Allostery in Drug Discovery written by Jian Zhang and published by Springer Nature. This book was released on 2019-11-09 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book focuses on protein allostery in drug discovery. Allosteric regulation, ʹthe second secret of lifeʹ, fine-tunes virtually most biological processes and controls physiological activities. Allostery can both cause human diseases and contribute to development of new therapeutics. Allosteric drugs exhibit unparalleled advantages compared to conventional orthosteric drugs, rendering the development of allosteric modulators as an appealing strategy to improve selectivity and pharmacodynamic properties in drug leads. The Series delineates the immense significance of protein allostery—as demonstrated by recent advances in the repertoires of the concept, its mechanistic mechanisms, and networks, characteristics of allosteric proteins, modulators, and sites, development of computational and experimental methods to predict allosteric sites, small-molecule allosteric modulators of protein kinases and G-protein coupled receptors, engineering allostery, and the underlying role of allostery in precise medicine. Comprehensive understanding of protein allostery is expected to guide the rational design of allosteric drugs for the treatment of human diseases. The book would be useful for scientists and students in the field of protein science and Pharmacology etc.

Mitochondrial Medicine

Author : Anna Gvozdjáková
Publisher : Springer Science & Business Media
ISBN 13 : 1402067143
Total Pages : 446 pages
Book Rating : 4.4/5 (2 download)

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Book Synopsis Mitochondrial Medicine by : Anna Gvozdjáková

Download or read book Mitochondrial Medicine written by Anna Gvozdjáková and published by Springer Science & Business Media. This book was released on 2008-02-01 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mitochondrial medicine deals with diseases that are related to mitochondrial dysfunction due to a number of causes from free radical damage to genetic mutation. This book is based on extensive data gathered over 30 years of clinical and experimental research. In it, internationally recognized authors share their experience in various fields of their expertise and guide readers through the disease process, from basic biochemical mechanisms to diagnosis to therapeutic aspects.

Novel Drug Delivery Technologies

Author : Ambikanandan Misra
Publisher : Springer Nature
ISBN 13 : 9811336423
Total Pages : 448 pages
Book Rating : 4.8/5 (113 download)

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Book Synopsis Novel Drug Delivery Technologies by : Ambikanandan Misra

Download or read book Novel Drug Delivery Technologies written by Ambikanandan Misra and published by Springer Nature. This book was released on 2020-02-12 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: The application of drug delivery is a valuable, cost-effective lifecycle management resource. By endowing drugs with new and innovative therapeutic benefits, drug delivery systems extend products’ profitable lifecycle, giving pharmaceutical companies competitive and financial advantages, and providing patients with improved medications. Formulation development is now being used to create new dosage forms for existing products, which not only reduces the time and expense involved in new drug development, but also helps with regard to patent protection and bypassing existing patents. Today’s culture demands convenience, a major factor determining adherence to drug therapy. Over the past few years, patient convenience-oriented research in the field of drug delivery has yielded a range of innovative drug-delivery options. As a result, various drug-delivery systems, including medicated chewing gums, oral dispersible tablets, medicated lozenges and lollipops, have now hit the market and are very popular. These dosage forms offer a highly convenient way to dose medications, not only for special population groups with swallowing difficulties, such as children and the elderly, but for the general populace as well. This book provides valuable insights into a number of formulation design approaches that are currently being used, or could be used, to provide new benefits from existing drug molecules.

Mandell, Douglas and Bennett’s Infectious Disease Essentials

Author : John E. Bennett
Publisher : Elsevier Health Sciences
ISBN 13 : 032344704X
Total Pages : 563 pages
Book Rating : 4.3/5 (234 download)

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Book Synopsis Mandell, Douglas and Bennett’s Infectious Disease Essentials by : John E. Bennett

Download or read book Mandell, Douglas and Bennett’s Infectious Disease Essentials written by John E. Bennett and published by Elsevier Health Sciences. This book was released on 2016-02-25 with total page 563 pages. Available in PDF, EPUB and Kindle. Book excerpt: Brought to you by the expert editor team from Principles and Practice of Infectious Diseases, this brand-new handbook provides a digestible summary of the 241 disease-oriented chapters contained within the parent text. Boasting an exceptionally templated design with relevant tables and illustrations, it distills the essential, up-to-date, practical information available in infectious disease. This high-yield manual-style reference will prove useful for a wide variety of practitioners looking for quick, practical, and current infectious disease information. Provides a digestible summary of the 241 disease-oriented chapters contained within Principles and Practice of Infectious Diseases, 8th Edition (ISBN: 978-1-4557-4801-3). Covers hot topics in infectious disease, such as Hepatitis B and C, Influenza, Measles, Papillomavirus, HIV, MERS, and C. difficile. Templated design includes relevant tables and illustrations. Ideal for the non-infectious disease specialist, including primary care physicians, physician assistants, nurse practitioners, students, residents, pharmacists, emergency physicians, and urgent care physicians. Short concise bulleted information Supported by table and illustrations where necessary Release annually with up to date content.

Antiviral Agents

Author : Catherine Adamson
Publisher : MDPI
ISBN 13 : 3039289535
Total Pages : 386 pages
Book Rating : 4.0/5 (392 download)

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Book Synopsis Antiviral Agents by : Catherine Adamson

Download or read book Antiviral Agents written by Catherine Adamson and published by MDPI. This book was released on 2021-01-21 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: Antiviral agents are used for the treatment of viral diseases. Antiviral drugs have been successfully developed and used clinically for a limited number of important human viral diseases notably caused by human immunodeficiency virus (HIV), hepatitis C virus (HCV), hepatitis B virus (HBV), herpes, and influenza viruses. Despite the successes of these antiviral drugs, issues with drug resistance and toxicity remain challenging. These challenges are driving research to identify new drug candidates and to investigate novel drug targets to develop new mechanistic drug classes. Antiviral agents are not available against many viruses that cause human disease and economic burdens; in particular, the development of antiviral agents against emerging, re-emerging, and neglected viruses is increasingly becoming a priority. This book includes six review articles that discuss new antiviral strategies. The reviews either discuss advances relating to a specific virus or new therapeutic targets and approaches. The book includes 15 original research articles reporting new antiviral agents against a variety of clinically and economically important viruses and studies into the prevalence or acquisition of drug resistance. Overall, this book is an exciting collection of new research and ideas relating to the development of antiviral agents.

Molecular Virology

Author : Susanne Modrow
Publisher : Springer
ISBN 13 : 9783642207174
Total Pages : 0 pages
Book Rating : 4.2/5 (71 download)

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Book Synopsis Molecular Virology by : Susanne Modrow

Download or read book Molecular Virology written by Susanne Modrow and published by Springer. This book was released on 2013-09-18 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book gives a comprehensive overview on the knowledge of virus infection relevant for humans and animals. For each virus family the molecular details of the virus particle and the viral replication cycle are described. In the case of virus types with relevance for human and/or animal health the data on molecular biology, genetics and virus-cell interaction are combined with those concerning, pathogenesis, epidemiology, clinics, prevention and therapy.

Human Antibody Therapeutics For Viral Disease

Author : Scott K. Dessain
Publisher : Springer Science & Business Media
ISBN 13 : 3540721460
Total Pages : 196 pages
Book Rating : 4.5/5 (47 download)

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Book Synopsis Human Antibody Therapeutics For Viral Disease by : Scott K. Dessain

Download or read book Human Antibody Therapeutics For Viral Disease written by Scott K. Dessain and published by Springer Science & Business Media. This book was released on 2007-11-21 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although the utility of human antibodies as medical therapeutics for cancer and immune diseases has been well-established, it is only beginning to be realized for the treatment of viral infectious diseases. Polyclonal immunoglobulins have long been used for some viral diseases, but they have limited potency and disease scope. Only a single humanized monoclonal antibody (pavilizumab) has been approved as a viral countermeasure.

Diagnosis of Liver Disease

Author : Etsuko Hashimoto
Publisher :
ISBN 13 : 9789811368073
Total Pages : pages
Book Rating : 4.3/5 (68 download)

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Book Synopsis Diagnosis of Liver Disease by : Etsuko Hashimoto

Download or read book Diagnosis of Liver Disease written by Etsuko Hashimoto and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This book guides practitioners in the assessment of patients with a liver problem. The emphasis is on the role of macro- and microscopic pathology in elucidating pathogenesis as well as identifying confounding features of image findings that may lead to a more elaborate differential diagnosis. If appropriate, the role of light and electron microscopic examination, along with the role of specific stains and molecular techniques, is illustrated. In addition, the concept of each liver disease is summarized briefly and its up-to-data is provided, and unresolved problems in diagnosis, treatment, and pathogenesis are clearly described. The approach in this book is a practical one with a focus on the evaluation of illustrative cases, simultaneously demonstrating cross-sectional images (ultrasonography, computed tomography, magnetic resonance imaging, and angiography), pathological findings, and peritoneoscopic images. The diagnosis and therapy are summed up in helpful tables, and association of clinical manifestations with image analysis and pathological findings is shown to be important in differential diagnosis and treatment. With the authors comprising internationally renowned experts, this book will serve as a useful source of information for medical students, physicians, internists, hepatologists, gastroenterologists, radiologists, and pathologists worldwide.