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Mechanisms Of Action And Efficacy Of Hcv Direct Acting Antiviral Agents And The Host Targeting Agent Cyclosporin A
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Book Synopsis Mechanisms of Action and Efficacy of HCV Direct-acting Antiviral Agents and the Host-targeting Agent Cyclosporin A by : Dandan Liu
Download or read book Mechanisms of Action and Efficacy of HCV Direct-acting Antiviral Agents and the Host-targeting Agent Cyclosporin A written by Dandan Liu and published by . This book was released on 2016 with total page 159 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Resistance to Direct-Acting Antiviral Agents in Treatment of Hepatitis C Virus Infections by : Mostafa K.
Download or read book Resistance to Direct-Acting Antiviral Agents in Treatment of Hepatitis C Virus Infections written by Mostafa K. and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Compounds targeting nonstructural (NS) proteins of hepatitis C virus (HCV) demonstrate clinical promise, suggesting that NS3/NS4a, NS5A, or NS5B inhibitors are potential components in direct-acting antiviral (DAA) combination therapies. In vitro studies revealed dramatic inhibition of viral replication or alteration in subcellular localization of NS proteins. DAAs bind either to catalytic sites (NS3 and NS5B) or to domain-1 of NS5A. Although >90% of the patients clear HCV RNA from their sera, a significant portion of cirrhotic patients suffer from resistance or virological relapse. Mutations in specific residues (Q80K) in NS3 (M28, A30, L31, and Y93 in genotypes 1a and 1b or L28, L30, M31, and Y93 in genotype 4) in NS5A and A282T in NS5B are associated with resistance to DAA [resistance-associated variants (RAVs)]. Current knowledge on the NS functions, mode of action of DAAs, and impacts of RAVs on treatment response are discussed. Not only mutations affecting the binding of DAAs to target proteins but also substitutions affecting the replication fitness of mutant quasispecies are major determinants of treatment failures. These resistance-associated substitutions (RASs) are now considered the major viral mutants that influence the virological outcome after DAA treatment.
Book Synopsis Probing Viral Replication of HCV and XMRV by : Tanyaradzwa P. Ndongwe
Download or read book Probing Viral Replication of HCV and XMRV written by Tanyaradzwa P. Ndongwe and published by . This book was released on 2015 with total page 187 pages. Available in PDF, EPUB and Kindle. Book excerpt: The studies described in this thesis focus on RNA viruses XMRV and HCV. In Chapter II we focused on Xenotropic Murine leukemia-Related Virus (XMRV). We characterized the biochemical activity and kinetics of the XMRV reverse transcriptase and discovered key mechanistic differences between XMRV, Moloney murine leukemia virus (MoMLV), and human immunodeficiency virus (HIV-1) reverse transcriptase (RT) enzymes. In Chapter III and IV we focused on Hepatitis C Virus (HCV), the causative agent of hepatitis C infection. We studied the role of an antiviral host factor Mov10 in the viral replication of HCV. We demonstrate that Mov10 overexpression in human hepatoma cells restricts HCV RNA production in a fully infectious virus cell culture system, leading to decreased virus production over time. Additionally, overexpression of Mov10 in producer cells decreases the infectivity of the produced virus. Confocal microscopy shows HCV infection results in redistribution of endogenous Mov10 to circular structures surrounding lipid droplets, proximal to viral proteins core and NS5A. Finally, we demonstrate that the RNA-binding function of Mov10 is responsible for its antiviral effect. Decreasing Mov10 protein expression levels decreased HCV replication and infection levels. Our data reveal a complex balance between Mov10 and HCV. In Chapter IV we studied several aspects of HCV. (i) We discovered two novel small molecule inhibitors of the HCV helicase that have antiviral function. (ii) We discovered that Dcp2 is a novel HCV host restriction factor that can block HCV replication, and (iii) we provide insights into the mechanism(s) of action of approved and clinically advanced direct-acting antiviral agents (DAAs).
Book Synopsis Host-Targeting Antivirals for Treatment of Hepatitis C by : Kyoko Tsukiyama-Kohara
Download or read book Host-Targeting Antivirals for Treatment of Hepatitis C written by Kyoko Tsukiyama-Kohara and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Treatment of chronic hepatitis C virus (HCV) infection has been revolutionized during last years with the development of highly potent direct-acting antivirals (DAAs) specifically targeting HCV proteins. DAAs are the current standard of care for patients with chronic hepatitis C, leading to high cure rates. However, some hurdles exist including the high cost of these therapies restricting access to patients, their inability to protect against the risk of developing hepatocellular carcinoma in patients with advanced fibrosis, and emergence of resistant variants resulting in treatment failure. New therapeutic options should be essential to overcome DAAs limitations and improve survival. By targeting host-cell factors involved in HCV life cycle, host-targeting antivirals (HTAs) offer opportunity for promising anti-HCV therapy with low mutational rate and may act in a synergistic manner with DAAs to prevent viral resistance and reduce viral replication. Moreover, HTAs could be effective in difficult-to-cure patients by acting through complementary mechanisms. In this chapter, we will focus on the latest and most relevant studies regarding the host-cell factors required in HCV infection and explored as targets of antiviral therapy, we will also discuss the HTAs evaluated in preclinical and clinical development and their potential role as alternative or complementary therapeutic strategies.
Book Synopsis Virus as Populations by : Esteban Domingo
Download or read book Virus as Populations written by Esteban Domingo and published by Academic Press. This book was released on 2019-11-06 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt: Virus as Composition, Complexity, Quasispecies, Dynamics, and Biological Implications, Second Edition, explains the fundamental concepts surrounding viruses as complex populations during replication in infected hosts. Fundamental phenomena in virus behavior, such as adaptation to changing environments, capacity to produce disease, and the probability to be transmitted or respond to treatment all depend on virus population numbers. Concepts such as quasispecies dynamics, mutations rates, viral fitness, the effect of bottleneck events, population numbers in virus transmission and disease emergence, and new antiviral strategies are included. The book's main concepts are framed by recent observations on general virus diversity derived from metagenomic studies and current views on the origin and role of viruses in the evolution of the biosphere. Features current views on key steps in the origin of life and origins of viruses Includes examples relating ancestral features of viruses with their current adaptive capacity Explains complex phenomena in an organized and coherent fashion that is easy to comprehend and enjoyable to read Considers quasispecies as a framework to understand virus adaptability and disease processes
Book Synopsis Recent Advances in Animal Virology by : Yashpal Singh Malik
Download or read book Recent Advances in Animal Virology written by Yashpal Singh Malik and published by Springer Nature. This book was released on 2019-11-14 with total page 471 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses the prominence and implication of the viral diseases that are a major threat to animals around the globe. A number of these diseases have also shown links with human populations, which has implications for public health. This book offers detailed and up-to-date information on viral diseases in livestock and poultry that were and/or are still a problem. Including cutting-edge developments, it also highlights several landmark contributions in the field of virology from India. Additionally, the book features tables and figures showing important clinical data and recommendations, with references for further information. It also explores the economic impact of viral diseases for farmers and the livestock industry, providing several examples. Further, it presents the latest information on viral diseases in global context, with a focus on state-of-art, molecular tools for the development of diagnostics, prophylactics and therapeutics. Lastly, the book also describes the challenges posed by the emerging and transboundary viral infections and our preparedness to counter them.
Book Synopsis Kucers' The Use of Antibiotics by : M. Lindsay Grayson
Download or read book Kucers' The Use of Antibiotics written by M. Lindsay Grayson and published by CRC Press. This book was released on 2017-10-02 with total page 5390 pages. Available in PDF, EPUB and Kindle. Book excerpt: Kucers’ The Use of Antibiotics is the definitive, internationally-authored reference, providing everything that the infectious diseases specialist and prescriber needs to know about antimicrobials in this vast and rapidly developing field. The much-expanded Seventh Edition comprises 4800 pages in 3 volumes in order to cover all new and existing therapies, and emerging drugs not yet fully licensed. Concentrating on the treatment of infectious diseases, the content is divided into four sections - antibiotics, anti-fungal drugs, anti-parasitic drugs, and anti-viral drugs - and is highly structured for ease of reference. Each chapter is organized in a consistent format, covering susceptibility, formulations and dosing (adult and pediatric), pharmacokinetics and pharmacodynamics, toxicity, and drug distribution, with detailed discussion regarding clinical uses - a feature unique to this title. Compiled by an expanded team of internationally renowned and respected editors, with expert contributors representing Europe, Africa, Asia, Australia, South America, the US, and Canada, the Seventh Edition adopts a truly global approach. It remains invaluable for anyone using antimicrobial agents in their clinical practice and provides, in a systematic and concise manner, all the information required when prescribing an antimicrobial to treat infection.
Book Synopsis Advances in Hepatology by : Luis Rodrigo
Download or read book Advances in Hepatology written by Luis Rodrigo and published by BoD – Books on Demand. This book was released on 2021-07-28 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses clinical advances in hepatology, with a focus on metabolic diseases and chronic hepatitis C. The development of direct-acting antiviral (DAA) agents for the treatment of hepatitis C virus (HCV) infection in 2010 has completely transformed the management of this disease. This transformative nature of DAA therapy underpins the goal of the World Health Organization (WHO) to eliminate HCV infection as a public health threat by 2030. The advantages of using these therapies include high efficacy (sustained virological response rate >95%) with minimal side effects, good tolerability, easy drug administration (once-daily oral dosing) and short duration of treatment (8-12 weeks). The commercialization of second-generation DAA agents due to their high effectiveness, few side-effects and pangenotypic action. This transformative nature of DAA therapy underpins the goal of the WHO to eliminate HCV infection as a public health threat by 2030.
Book Synopsis Liver Disease in Children by : Frederick J. Suchy
Download or read book Liver Disease in Children written by Frederick J. Suchy and published by Cambridge University Press. This book was released on 2021-03-18 with total page 875 pages. Available in PDF, EPUB and Kindle. Book excerpt: Liver disease in children is increasing in prevalence, placing a huge burden on healthcare systems and often requiring long-term management. Offering an integrative approach to the science and clinical practice of pediatric hepatology, this is the definitive reference text for improved diagnosis and treatment strategies. In the new edition of this authoritative text, chapters have been thoroughly revised in line with major advances in the field, such as recognizing the increased frequency of fatty liver disease, and how genetic testing has the potential to establish earlier diagnoses for a variety of diseases. Disorders covered include cholestasis, metabolic disorders and hepatitis, with their presentation across the spectrum of infancy, childhood and adolescence discussed. The indications and surgical aspects of liver transplant are explained and post-transplant care is described in detail. This is a valuable resource for pediatricians, hepatologists, gastroenterologists and all clinicians involved in the care of children with liver diseases.
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.
Book Synopsis HCV: The Journey from Discovery to a Cure by : Michael J. Sofia
Download or read book HCV: The Journey from Discovery to a Cure written by Michael J. Sofia and published by Springer Nature. This book was released on 2020-02-07 with total page 493 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hepatitis C is a liver disease caused by the hepatitis C virus (HCV) and infects approximately 75 million individuals worldwide. It is also one of the major causes of liver cancer and liver transplants. The elucidation of the HCV genome, and the development of a whole cell system to study the virus spurred the search for novel direct acting antiviral drugs to cure this disease. This global effort culminated in the development of direct acting antiviral drugs that led to cure rates approaching 100% in all patient populations after only 8-12 weeks of therapy. These efforts resulted in one of the greatest achievements in public health and provides the potential for eliminating HCV as a major disease worldwide. This volume is aimed at a broad audience of academic and industrial scientists interested in the discovery and development of drugs to treat viral diseases and those interested in reading about one of the most unique accomplishments in biomedical research. The volume will provide a one of a kind reference work that highlights the many efforts, from the discovery of the HCV virus, to the invention of breakthrough medicines and their use in the real world to cure patients. It is the companion book to the volume "HCV: The Journey from Discovery to a Cure - Volume I".
Book Synopsis Red Book Atlas of Pediatric Infectious Diseases by : American Academy of Pediatrics
Download or read book Red Book Atlas of Pediatric Infectious Diseases written by American Academy of Pediatrics and published by . This book was released on 2007 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on key content from Red Book: 2006 Report of the Committee on Infectious Diseases, 27th Edition, the new Red Bookr Atlas is a useful quick reference tool for the clinical diagnosis and treatment of more than 75 of the most commonly seen pediatric infectious diseases. Includes more than 500 full-color images adjacent to concise diagnostic and treatment guidelines. Essential information on each condition is presented in the precise sequence needed in the clinical setting: Clinical manifestations, Etiology, Epidemiology, Incubation period, Diagnostic tests, Treatment
Download or read book OZONE written by Velio Bocci and published by Springer Science & Business Media. This book was released on 2010-10-05 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: Oxygen-Ozone therapy is a complementary approach less known than homeopathy and acupuncture because it has come of age only three decades ago. This book clarifies that, in the often nebulous field of natural medicine, the biological bases of ozone therapy are totally in line with classical biochemistry, physiological and pharmacological knowledge. Ozone is an oxidizing molecule, a sort of super active oxygen, which, by reacting with blood components generates a number of chemical messengers responsible for activating crucial biological functions such as oxygen delivery, immune activation, release of hormones and induction of antioxidant enzymes, which is an exceptional property for correcting the chronic oxidative stress present in atherosclerosis, diabetes and cancer. Moreover, by inducing nitric oxide synthase, ozone therapy may mobilize endogenous stem cells, which will promote regeneration of ischemic tissues. The description of these phenomena offers the first comprehensive picture for understanding how ozone works and why. When properly used as a real drug within therapeutic range, ozone therapy does not only does not procure adverse effects but yields a feeling of wellness. Half the book describes the value of ozone treatment in several diseases, particularly cutanious infection and vascular diseases where ozone really behaves as a “wonder drug”. The book has been written for clinical researchers, physicians and ozone therapists, but also for the layman or the patient interested in this therapy.
Book Synopsis Molecular Virology of Human Pathogenic Viruses by : Wang-Shick Ryu
Download or read book Molecular Virology of Human Pathogenic Viruses written by Wang-Shick Ryu and published by Academic Press. This book was released on 2016-03-30 with total page 441 pages. Available in PDF, EPUB and Kindle. Book excerpt: Molecular Virology of Human Pathogenic Viruses presents robust coverage of the key principles of molecular virology while emphasizing virus family structure and providing key context points for topical advances in the field. The book is organized in a logical manner to aid in student discoverability and comprehension and is based on the author’s more than 20 years of teaching experience. Each chapter will describe the viral life cycle covering the order of classification, virion and genome structure, viral proteins, life cycle, and the effect on host and an emphasis on virus-host interaction is conveyed throughout the text. Molecular Virology of Human Pathogenic Viruses provides essential information for students and professionals in virology, molecular biology, microbiology, infectious disease, and immunology and contains outstanding features such as study questions and recommended journal articles with perspectives at the end of each chapter to assist students with scientific inquiries and in reading primary literature. Presents viruses within their family structure Contains recommended journal articles with perspectives to put primary literature in context Includes integrated recommended reading references within each chapter Provides access to online ancillary package inclusive of annotated PowerPoint images, instructor’s manual, study guide, and test bank
Book Synopsis Successful Strategies for the Discovery of Antiviral Drugs by : Manoj C. Desai
Download or read book Successful Strategies for the Discovery of Antiviral Drugs written by Manoj C. Desai and published by Royal Society of Chemistry. This book was released on 2013-06-17 with total page 551 pages. Available in PDF, EPUB and Kindle. Book excerpt: The antiviral therapeutic area continues to rapidly generate meaningful new chemical entities; for example, for HIV alone more than 25 drugs have been approved, and in the next few years many individual drugs and single tablet regimens will be approved for the treatment of hepatitis C virus infection. The increasing success in the antiviral area could be due to targeting drugs at "non-self" genomes and to the patient population that is tolerant of manageable side effects and adaptable to inconvenient dosing. Aimed at medicinal chemists and emerging drug discovery scientists, the book is organized according to the various strategies deployed for the discovery and optimization of initial lead compounds. This book focuses on capturing tactical aspects of problem solving in antiviral drug design, an approach that holds special appeal for those engaged in antiviral drug development, but also appeals to the broader medicinal chemistry community based on its focus on tactical aspects of drug design.
Book Synopsis Antiviral Drug Discovery and Development by : Xinyong Liu
Download or read book Antiviral Drug Discovery and Development written by Xinyong Liu and published by Springer Nature. This book was released on 2021-07-13 with total page 357 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book summarizes state-of-the-art antiviral drug design and discovery approaches starting from natural products to de novo design, and provides a timely update on recently approved antiviral drugs and compounds in advanced clinical development. Special attention is paid to viral infections with a high impact on the world population or highly relevant from the public health perspective (HIV, hepatitis C, influenza virus, etc.). In these chapters, limitations associated with adverse effects and emergence of drug resistance are discussed in detail. In addition to classical antiviral strategies, chapters will be dedicated to discuss the non-classical drug development strategies to block viral infection, for instance, allosteric inhibitors, covalent antiviral agents, or antiviral compounds targeting protein–protein interactions. Finally, current prospects for producing broad-spectrum antiviral inhibitors will be also addressed. The book is distinctive in providing the most recent update in the rapidly evolving field of antiviral therapeutics. Authoritative reviews are written by international scientists well known for their contributions in their topics of research, which makes this book suitable for researchers not only within the antiviral research community but also attractive to a broad audience in the drug discovery field. This book covers molecular structures and biochemical mechanisms mediating the antiviral effects, while discussing various ligand design strategies, which include traditional medicinal chemistry, computational chemistry, and chemical biology approaches. The book provides a comprehensive review of antiviral drug discovery and development approaches, particularly focusing on current innovations and future trends.
Book Synopsis Acute Exacerbation of Chronic Hepatitis B by : Qin Ning
Download or read book Acute Exacerbation of Chronic Hepatitis B written by Qin Ning and published by Springer. This book was released on 2019-05-21 with total page 513 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book assembles recent achievements in both basic research and clinical management in the field of hepatology, virology and immunology. It provides up-to-date information for clinicians who can apply the relevant knowledge to their daily clinical practice and for researchers who are interested in clinically orientated studies. The updated and detailed technology, state-of–the-art treatment strategies provided in this book serve as references for clinicians and resident physicians in the daily management of ACLF. The rationality and strategies for basic research as well as patient management in this book can also be a valuable reference for other fatal and end stage liver diseases than HBV induced ACLF. This Volume 2 has 6 chapters and focuses on its diagnosis and management.
