Download or read book The Evolution and Emergence of RNA Viruses written by Edward C. Holmes and published by Oxford University Press. This book was released on 2009-06-25 with total page 267 pages. Available in PDF, EPUB and Kindle. Book excerpt: While the study of viral evolution has developed rapidly in the last 30 years, little attention has been directed toward linking the mechanisms of viral evolution to the epidemiological outcomes of these processes. This book intends to fill this gap by considering the patterns and processes of viral evolution at all its spatial and temporal scales.
Download or read book Origin and Evolution of Viruses written by Esteban Domingo and published by Elsevier. This book was released on 2008-06-23 with total page 573 pages. Available in PDF, EPUB and Kindle. Book excerpt: New viral diseases are emerging continuously. Viruses adapt to new environments at astounding rates. Genetic variability of viruses jeopardizes vaccine efficacy. For many viruses mutants resistant to antiviral agents or host immune responses arise readily, for example, with HIV and influenza. These variations are all of utmost importance for human and animal health as they have prevented us from controlling these epidemic pathogens. This book focuses on the mechanisms that viruses use to evolve, survive and cause disease in their hosts. Covering human, animal, plant and bacterial viruses, it provides both the basic foundations for the evolutionary dynamics of viruses and specific examples of emerging diseases. - NEW - methods to establish relationships among viruses and the mechanisms that affect virus evolution - UNIQUE - combines theoretical concepts in evolution with detailed analyses of the evolution of important virus groups - SPECIFIC - Bacterial, plant, animal and human viruses are compared regarding their interation with their hosts
Download or read book Plant Virus Evolution written by Marilyn J. Roossinck and published by Springer Science & Business Media. This book was released on 2008-02-23 with total page 227 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive look at the field of plant virus evolution. It is the first book ever published on the topic. Individual chapters, written by experts in the field, cover plant virus ecology, emerging viruses, plant viruses that integrate into the host genome, population biology, evolutionary mechanisms and appropriate methods for analysis. It covers RNA viruses, DNA viruses, pararetroviruses and viroids, and presents a number of thought-provoking ideas.
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 428 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
Download or read book Viruses written by Michael G. Cordingley and published by Harvard University Press. This book was released on 2017-06-19 with total page 385 pages. Available in PDF, EPUB and Kindle. Book excerpt: While viruses—the world’s most abundant biological entities—are not technically alive, they invade, replicate, and evolve within living cells. Michael Cordingley goes beyond our familiarity with infections to show how viruses spur evolutionary change in their hosts and shape global ecosystems, from ocean photosynthesis to drug-resistant bacteria.
Download or read book Evolution Genomic Adaptation of Emerging and Re emerging RNA viruses written by Kai Huang and published by Frontiers Media SA. This book was released on 2022-01-06 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Quasispecies and RNA Virus Evolution written by Esteban Domingo and published by . This book was released on 2001 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Viruses Essential Agents of Life written by Günther Witzany and published by Springer Science & Business Media. This book was released on 2012-11-13 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: A renaissance of virus research is taking centre stage in biology. Empirical data from the last decade indicate the important roles of viruses, both in the evolution of all life and as symbionts of host organisms. There is increasing evidence that all cellular life is colonized by exogenous and/or endogenous viruses in a non-lytic but persistent lifestyle. Viruses and viral parts form the most numerous genetic matter on this planet.
Download or read book Tropical Medicine Notebook written by Philippa C. Matthews and published by Oxford University Press. This book was released on 2017-07-13 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Tropical Medicine Notebook is a new concept in providing a concise overview of the key topics in tropical medicine, using short notes, diagrams, maps, and tables to present the material in an accessible, engaging, memorable, and interesting way. The format is generally a page per topic, with division of each page into subsections by boxes to make it easy to find the relevant information. Cross-referencing is provided to allow quick linking between relevant sections of the book. Providing the key information in bite-size chunks, the Tropical Medicine Notebook is a useful companion to more comprehensive texts. Divided into eight sections; the first five cover infections caused by bacteria, viruses, fungi, protozoa and helminths, followed by a further three which present the topics of vector biology, disease syndromes and envenomation. Where relevant, the section is prefaced by a classification system to provide a logical overview, helping with assimilation of information and highlighting important relationships between organisms. It is an ideal learning and revision guide for students or trainees in infection, microbiology, and tropical medicine, as well as being a useful reference resource for healthcare and laboratory staff across the wide range of disciplines to which infection may present.
Download or read book Embracing Randomness written by Katarina Marie Braun and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pathogenic RNA viruses emerging from zoonotic reservoirs are among the highest threats for global infectious disease control. Every single major epidemic or pandemic in the 21st century has resulted from an emerging or re-emerging zoonotic RNA virus. Severe Acute Respiratory Syndrome virus 1 (SARS-CoV) emerged in 2003, a novel pandemic H1N1 influenza virus in 2009, Middle East Respiratory Syndrome virus (MERS-CoV) in 2012 and 2015, Ebola in 2014, Zika virus in 2015, Yellow fever virus in 2016, and SARS-CoV-2 in 2019. It is clear the primary drivers of the emergence of these zoonotic RNA viruses are increasing globalization, habitat fragmentation, and encroachment of a continuously growing human population into wildlife habitats 1. It is notable that this increased interaction between humans and animals likely increases the risk of interspecies transmission among a large number of potential pathogens, yet RNA viruses are the dominant source of emerging human pathogens 2. The capacity for RNA viruses to rapidly adapt to new host environments and to respond to shifting selective pressures is not completely understood. Current dogma suggests this trait is tied to short generation times and high mutation rates resulting from error-prone viral replication. RNA virus mutability creates diverse viral populations which are more capable than homogenous populations of adapting to new hosts and host environments 3. However, the generation of viral variation is only the first step. Individual mutations that confer fitness benefits in particular environments must then increase in frequency and/or make their way out of individual hosts and into populations. This stage presents several obstacles that the virus must overcome and is therefore likely to be rate-limiting for the overall pace of viral evolution and host-switching. The first three chapters (chapters 2-4) of this dissertation focus on investigating the evolutionary processes by which zoonotic RNA viruses adapt to mammalian hosts. The results of this work call attention to several significant obstacles that zoonotic RNA viruses must overcome in order to successfully and efficiently emerge in and adapt to human hosts. I suggest these obstacles all derive from the effects of randomness on viral systems. The cumulative impact of these obstacles has critical implications in assessing the pandemic potential of viruses that have already caused human epidemics, like avian influenza viruses, and the adaptive potential of the current pandemic virus, SARS-CoV-2. The final two chapters (chapters 5-6) of this dissertation discuss our work combining principles of viral evolution with epidemiology and population health to investigate the early patterns of SARS-CoV-2 spread in the state of Wisconsin. Taken together, this work suggests the effects of randomness on viral populations within and between individual hosts are a previously underappreciated brake to the pace of viral adaptation and host-switching for influenza A virus (IAV) and SARS-CoV-2. Additionally, this work underscores the value of genomic epidemiology early in a pandemic to understand patterns of viral transmission in different populations and to assess the impact of public health guidelines and interventions on a rolling basis.
Download or read book Some RNA Viruses written by Yogendra Shah and published by BoD – Books on Demand. This book was released on 2021-01-14 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an overview of the globally concerning and emerging public health RNA viruses like SARS-CoV2, Ebola virus, FMD disease, and others. The main drive to publish this book was to present information on the molecular epidemiology pattern, transmission dynamics, host response factor, RNA viral infection, RNA virus evolution, molecular biology of RNA viruses, pathogenesis mechanism and phylogenetic analysis causing viral diseases among humans. This book will help to provide updated research information to the policymaker or planner for further diagnosis with genotyping tools, control, and prevention for further outbreaks of diseases from RNA viruses in tropical and subtropical countries.
Download or read book Virus Evolution written by Scott C. Weaver and published by Caister Academic Press Limited. This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The field of virus evolution has developed during the past three decades, from one considered by many to be esoteric and unimportant for human and agricultural health, to a major driver of our thinking about infectious diseases of plants and animals. The field has been spurred on during the past 30 years by emerging viral diseases such as HIV/AIDS, hantaviruses, SARS, MERS, and Ebola, along with discoveries of the quasispecies nature and potential for rapid evolution and diversification of RNA virus populations. Over time, the focus of research has expanded and developed to encompass a diverse mixture of approaches, from highly theoretical and mechanistic studies of the basic evolutionary mechanisms to detailed research on the molecular host range, as well as virulence changes responsible for emerging viral diseases. This timely book addresses a wide range of current questions and research approaches at the forefront of the field and highlights recent advances in the understanding of the history and mechanisms of virus evolution. Wherever possible, the book's contributors have integrated information from the study of plant, animal, and bacterial viruses. Every effort has been made to unify findings and to highlight the diversity in patterns and modes of virus evolution between systems in order to aid comparative analysis. The book will be essential reading for everyone working on virus evolution and emerging viral diseases. It is also recommended for anyone working in the area of viral pathogenesis. [Subject: Microbiology, Virology, Life Science]
Download or read book The Evolution of RNA Viruses written by Abayomi Olabode and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Highly Mutable Animal RNA Viruses Adaptation and Evolution written by Akio Adachi and published by Frontiers Media SA. This book was released on 2017-11-30 with total page 421 pages. Available in PDF, EPUB and Kindle. Book excerpt: Viruses are widely present in nature, and numerous viral species with a variety of unique characteristics have been identified so far. Even now, new emerging or re-emerging viruses are being found or re-found as novel viral classes or as quasi-species. Indeed, viruses are everywhere. Of note, viruses are pivotal as targets and tools of basic and applied sciences. On one hand, portions of the viruses are infectious for animals including humans, and cause various diseases in infected hosts by distinct mechanisms and at a different level of severity. While many of viruses are known to co-exist quietly with their hosts, pathogenic viruses certainly affect and threaten our society as well as individuals to provoke serious medical or economic attention. We should act against certain dreadful and highly infectious viruses as a global problem. Animal RNA viruses can readily mutate to adapt themselves in their hostile environments for their survival. Resultant viruses may sometimes show essentially altered phenotypes from the original parental strains. This fundamental and general property of animal RNA viruses represents major extensive issues of scientific, medical, and/or economic importance. In this Research Topic, we have focused on the high mutability of animal RNA viruses, and selected relevant articles on animal viruses of broad-ranges such as primate lentiviruses, influenza viruses, paramyxoviruses, flaviviruses, rabies virus, norovirus, picornaviruses, and picobirnavirus. Each article has taken up intriguing aspects of the subject viruses. We are sure that readers acquire important information on virus mutation, adaptation, diversification, and evolution, and hope that researchers in the field related to virology gain some solid hints from the reported articles for further virological and /or medical studies. Finally, we thank all the contributing researchers in this Research Topic, entitled “Highly Mutable Animal RNA Viruses: Adaptation and Evolution”, for their elegant and interesting works.
Download or read book The Adaptive Seascape written by David J. Merrell and published by U of Minnesota Press. This book was released on 1994 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on observational and experimental data, in natural populations of plants and animals studied in the field and in the laboratory, this perspective unravels the hidden and often poorly founded assumptions underlying some of the more troublesome controversies in evolutionary biology today
Download or read book Virus Structure written by and published by Elsevier. This book was released on 2003-10-02 with total page 610 pages. Available in PDF, EPUB and Kindle. Book excerpt: Virus Structure covers the full spectrum of modern structural virology. Its goal is to describe the means for defining moderate to high resolution structures and the basic principles that have emerged from these studies. Among the topics covered are Hybrid Vigor, Structural Folds of Viral Proteins, Virus Particle Dynamics, Viral Gemone Organization, Enveloped Viruses and Large Viruses. - Covers viral assembly using heterologous expression systems and cell extracts - Discusses molecular mechanisms in bacteriophage T7 procapsid assembly, maturation and DNA containment - Includes information on structural studies on antibody/virus complexes
Download or read book Origin of Group Identity written by Luis P. Villarreal and published by Springer Science & Business Media. This book was released on 2008-12-10 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt: A sense of belonging is basic to the human experience. But in this, humans are not unique. Essentially all life, from bacteria to humans, have ways by which it determines which members belong and which do not. This is a basic cooperative nature of life I call group membership which is examined in this book. However, cooperation of living things is not easily accounted for by current theory of evolutionary biology and yet even viruses display group membership. That viruses have this feature would likely seem coincidental or irrelevant to most scientist as having any possible relationship to human group identity. Surely such simple molecular-based relationships between viruses are unrelated to the complex cognitive and emotional nature of human group membership. Yet viruses clearly affect bacterial group membership, which are the most diverse and abundant cellular life form on Earth and from which all life has evolved. Viruses are the most ancient, numerous and adaptable biological entities we know. And we have long recognized them for the harm and disease they can cause, and they have been responsible for the greatest numbers of human deaths. However, with the sequencing of entire genomes and more recently with the shotgun sequencings of habitats, we have come to realize viruses are the black hole of biology; a giant force that has until recently been largely unseen and historically ignored by evolutionary biology. Viruses not only can cause acute disease, but also persist as stable unseen agents in their host.
