Hepatitis C Virus-Host Interactions and Therapeutics: Current Insights and Future Perspectives


Book Description

The burden of hepatitis C virus (HCV) infection on the public health care system continues to remain significant despite the remarkable progress made in HCV therapeutics in the recent past. There are now almost a dozen oral interferon-free direct-acting antivirals available for the treatment of hepatitis C virus infection. Despite advances in the treatment of HCV, therapeutic gaps remain that are yet to be fully explored. Researchers and scientists still strive to understand virus-host interactions to map the disease’s progression along with extrahepatic manifestations and virus invasion strategies impacting the host’s immune system. This book briefly discusses the biology of HCV infection, virus-host interactions, molecular epidemiology of the infection, and the full spectrum of immune responses to hepatitis C. It also provides in-depth information about HCV, clinical diagnostics, and therapeutic knowledge to all stakeholders involved in HCV screening, diagnosis, treatment, and management. Topics covered in the chapters include 1) HCV-host interactions leading to asymptomatic acute infection, 2) the progression of acute HCV infection to chronic disease and subsequent extrahepatic comorbidities, 3) Innate and adaptive immune responses in HCV infections, 4) Consensus-based Approaches for Hepatitis C Screening and Diagnosis, 5) advances in hepatitis C therapy and global management of HCV, and 6) the outcomes of Oral Interferon-free Direct-acting Antivirals as Combination Therapies to Cure Hepatitis C. This book is a valuable addition to undergraduate and postgraduate hepatology students and physicians, clinicians, hepatologists, and health care officials involved in HCV clinical diagnosis and therapeutics.




Eliminating the Public Health Problem of Hepatitis B and C in the United States


Book Description

Hepatitis B and C cause most cases of hepatitis in the United States and the world. The two diseases account for about a million deaths a year and 78 percent of world's hepatocellular carcinoma and more than half of all fatal cirrhosis. In 2013 viral hepatitis, of which hepatitis B virus (HBV) and hepatitis C virus (HCV) are the most common types, surpassed HIV and AIDS to become the seventh leading cause of death worldwide. The world now has the tools to prevent hepatitis B and cure hepatitis C. Perfect vaccination could eradicate HBV, but it would take two generations at least. In the meantime, there is no cure for the millions of people already infected. Conversely, there is no vaccine for HCV, but new direct-acting antivirals can cure 95 percent of chronic infections, though these drugs are unlikely to reach all chronically-infected people anytime soon. This report, the first of two, examines the feasibility of hepatitis B and C elimination in the United States and identifies critical success factors. The phase two report will outline a strategy for meeting the elimination goals discussed in this report.




Vaccines against RNA Viruses


Book Description

RNA viruses cause animal, human, and zoonotic diseases that affect millions of individuals, as is being exemplified by the devastating ongoing epidemic of the recently identified SARS-Cov-2. For years vaccines have had an enormous impact on overcoming the global burden of diseases. Nowadays, a vast number of different approaches, from purified inactivated and live attenuated viruses, nucleic acid (DNA or RNA) based candidates, virus-like particles, subunit elements, and recombinant viruses are been employed to combat viruses. However, for many of them efficient vaccines are not yet available. This will probably change dramatically with the current Covid-19 pandemic, as a vast variety of vaccinology approaches are being tested against it, with hundreds of candidates under development, dozens of them already in clinical trials, a fact that is breaking records in vaccine development and implementation. This is becoming possible thanks to the enormous work carried out during years to have the bases for a quick response, even against unknown pathogens, in an impressive short time. Here, results obtained with different vaccine´s methodological approaches against human (HIV, HCV, HRV) animal (PRRSV, PEDV, FMDV, VHSV) and zoonotic (RVF, WNV), RNA viruses are presented by field experts.




Polymicrobial Diseases


Book Description

Polymicrobial diseases, those involving more than one etiologic agent, are more common than is generally realized and include respiratory diseases, gastroenteritis, conjunctivitis, keratitis, hepatitis, periodontal diseases, multiple sclerosis, genital infections, intra -- abdominal infections, and pertussis.




Advanced Concepts in Human Immunology: Prospects for Disease Control


Book Description

This book highlights information derived primarily from clinical samples, with particular reference to theoretical and scientific aspects of the human immune system. This text will focus on topics that range from host-pathogen interactions in infectious disease to host immune response in cancer, allergic diseases, neuroinflammatory diseases, and autoimmune disorders. The reader will also have a well-rounded understanding of the behavior of the immune system with particular emphasis on the role of immunoproteomics in immunotherapy, neuroprotective immunity for neurodegenerative and neuroinfectious disease, leukemia-associated dendritic cell induction of adaptive immunity dysregulation, and the role of immune checkpoint inhibitors in cancer, infection, as well as neuroinflammation. Taken together, the contents of this book are intended for both clinicians and researchers in academia and industry.




Viral Pathogenesis


Book Description

Viral Pathogenesis: From Basics to Systems Biology, Third Edition, has been thoroughly updated to cover topical advances in the evolving field of viral pathogenesis, while also providing the requisite classic foundational information for which it is recognized. The book provides key coverage of the newfound ability to profile molecular events on a system-wide scale, which has led to a deeper understanding of virus-host interactions, host signaling and molecular-interaction networks, and the role of host genetics in determining disease outcome. In addition, the content has been augmented with short chapters on seminal breakthroughs and profiles of their progenitors, as well as short commentaries on important or controversial issues in the field. Thus, the reader will be given a view of virology research with perspectives on issues such as biomedical ethics, public health policy, and human health. In summary, the third edition will give the student a sense of the exciting new perspectives on viral pathogenesis that have been provided by recent developments in genomics, computation, modeling, and systems biology. - Covers all aspects of viral infection, including viral entry, replication, and release, as well as innate and adaptive immunity and viral pathogenesis - Provides a fresh perspective on the approaches used to understand how viruses cause disease - Features molecular profiling techniques, whole genome sequencing, and innovative computational methods - Highlights the use of contemporary approaches and the insights they provide to the field




Advances in Hepatology


Book Description

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.




Chronic Hepatitis C Virus


Book Description

Chronic Hepatitis C Virus: Lessons from the Past, Promise for the Future documents the monumental advances that have been made in our understanding of chronic HCV during the past decade. The first section reviews the natural history of chronic HCV, how this virus can affect other organs in addition to the liver, and whether treating chronic HCV alters the natural history of this disease. Section 2 reviews the advances that have been made in the treatment of chronic HCV during the past decade with interferon based therapy. Separate chapters on response guided therapy and how to manage the adverse events associated with these medications provide the physician with the concepts required to more effectively treat chronic HCV now and in the future. As the genetics of virologic response have recently been elucidated, a chapter is devoted to helping the clinician understand how genes that modulate disease processes and their treatment are identified and utilized in clinical care. Section 3 deals with the future of HCV treatment and specific inhibitors of HCV. Specific chapters explain how targets for drugs are identified and how drugs are then developed and tested; how mutations of HCV develop and how anti-viral agents will affect this process; the most up to date data regarding the treatment of chronic HCV with peginterferon, ribavirin and anti-viral agents; and the potential to treat chronic HCV with just oral anti-viral agents and without peginterferon and ribavirin in the future. The final section of this book covers issues related to liver transplantation in patients with chronic HCV. Separate chapters review the natural history of chronic HCV in liver transplant recipients and the impact of utilizing HCV positive donors. The volume concludes with chapters that cover the treatment of chronic HCV both prior to and after liver transplantation with potent anti-viral agents. Chronic Hepatitis C Virus: Lessons from the Past, Promise for the Future is a valuable resource for all physicians caring for patients with chronic HCV.




Current Progress and Challenges in the Development of a Hepatitis C Virus Vaccine


Book Description

More than 70 million people worldwide are infected with hepatitis C virus, a major cause of liver cirrhosis, liver failure and hepatocellular carcinoma world-wide. In the last decade, this cancer has emerged as the second leading cause of cancer death and the global burden is increasing by two million new infections per year, mainly due to injection drug use. An effective vaccine will be the most effective means to contain the spread of this virus worldwide. The articles in this Research Topic describe the progress that has been made towards a preventive vaccine and the challenges that still need to be overcome to ultimately achieve this goal.