Download or read book Diversity of Antigenic Secretion in Apicomplexan Parasites and Its Role in Plasmodium Falciparum Malaria written by KARELL. PELLE and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Apicomplexan parasites are responsible for some of the most devastating human and veterinarian diseases and are parasites of great economic importance. Apicomplexa include Plasmodium, Toxoplasma and Babesia species. The pathogenic mechanisms developed by Apicomplexa parasites, in particular those that reside in a parasitophorous vacuole, involve considerable changes to the host cell, including the expression of variable surface proteins required for immune evasion. In Plasmodium falciparum infections, host cell remodeling is responsible for disease symptomology and severity in the human host. This work represents a multi-faceted study of antigenic secretion and the role of secreted antigens in pathogenesis. We study in detail the mechanisms of antigen secretion in Apicomplexa parasites. By use of comparative genomics, we find Plasmodium Export Element (PEXEL)-like motifs in a subset of Cryptosporidium and Babesia secreted proteins. However, in Babesia the motif functions as a spherical body targeting sequence, suggesting that secretory mechanisms in Apicomplexa are adapted to the parasite's intracellular lifestyle. To elucidate the relationship and function of exported antigens, we first focused on P. falciparum to determine gene co-expression modules. We found that in vivo, export modules are composed of constitutively or variably expressed genes, the latter group associated with patient clinical phenotypes. We then focused on a novel gene family called "phist" and show, using transcriptional expression profiling, its role in P. falciparum cytoadherence. In total, we demonstrate that antigen secretion is an evolutionary mechanism in Apicomplexa parasites and that variant expression of the genes encoding these antigens may allow parasites to adapt to environmental stresses.
Download or read book Antigenic Diversity in the Malaria Parasite Plasmodium Falciparum written by Adel Ebrahimzadeh and published by . This book was released on 1997 with total page 341 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Antigenic Diversity in Plasmodium Falciparum written by Vicki M. Marshall and published by . This book was released on 1995 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Multi scale Immune Selection and the Maintenance of Structured Antigenic Diversity in the Malaria Parasite Plasmodium Falciparum written by Thomas Mitchell Holding and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Handbook of the Protists written by John M. Archibald and published by Springer. This book was released on 2017-08-16 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Published in a modern, user-friendly format this fully revised and updated edition of The Handbook of Protoctista (1990) is the resource for those interested in the biology, diversity and evolution of eukaryotic microorganisms and their descendants, exclusive of animals, plants and fungi. With chapters written by leading researchers in the field, the content reflects the present state of knowledge of the cell and genome biology, evolutionary relationships and ecological/medical/economic importance each major group of protists, organized according to current protist systematics as informed by molecular phylogenetics and genomics.
Download or read book Molecular Mechanisms of Parasite Invasion written by Barbara A. Burleigh and published by Springer Science & Business Media. This book was released on 2008-12-05 with total page 255 pages. Available in PDF, EPUB and Kindle. Book excerpt: All of the parasitic organisms highlighted in this new book represent medically important human pathogens that contribute significantly to the global burden of disease. As such there is intense interest in understanding the molecular basis of infection by these pathogens—not only with regard to their clinical relevance but also the fascinating biology they reveal. For most of the parasites discussed here the ability to penetrate biological barriers and/or to establish intracellular residence is critical to survival of the pathogen in the mammalian hosts. For other parasites, a tissue invasive phenotype is a key virulence determinant. In the ensuing 18 chapters, select members of this diverse set of protozoan parasites, as well as some examples of the extremely reduced fungal parasites classified as Microsporidia, are discussed within the context of the fascinating molecular strategies employed by these organisms to migrate across biological barriers and to establish residence within target host cells.
Download or read book Apicomplexan Parasites written by Katja Becker and published by John Wiley & Sons. This book was released on 2011-01-19 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt: This handbook is the first dealing with the discovery of drugs directed against apicomplexan parasites. Amongst others, this group of endoparasites includes the causative agents of Malaria, Toxoplasmosis, and Babesiosis, the latter occurring mainly in animals. Written by renowned scientific experts from academia and industry, the book focuses on currentdrug development approaches for all apicomplexan diseases making it appealing to a large audience, ranging from research labs in academia to the human and veterinarian pharmaceutical industry. This work is the second volume of the new book series 'Drug Discovery in Infectious Diseases', edited by Prof. Dr Paul M. Selzer.
Download or read book The Malaria Genome Projects written by Irwin W. Sherman and published by World Scientific. This book was released on 2012 with total page 389 pages. Available in PDF, EPUB and Kindle. Book excerpt: The year 2012 marks the tenth anniversary of the announcement of the genome sequence of the human malaria parasite Plasmodium falciparum and that of its mosquito vector Anopheles. The genome sequences were a result of the Plasmodium falciparum Genome Project. This book covers in detail the biology of malaria parasites and the mosquitoes that transmit the disease, how the Genome Project came into being, the people who created it, and the cadre of scientists who are attempting to see the promise of the Project realized. The promise was: a more complete understanding of the genes of the parasite (and its vector) would provide a rational basis for the development of antimalarial drugs and vaccines, allow a better understanding of the regulation of the complex life cycle in the red blood and liver cells of the human, identify the genes the parasite uses to thwart the host immune response and the ways in which the parasite evades cure by drug treatments, as well as leading to more effective measures of control transmission. The hope was that cracking the genetic code of Plasmodium and Anopheles would reveal the biochemical Achilles heel of the parasite and its vector, leading to the development of novel drugs and better methods of control, and by finding the targets of protective immunity could result in the manufacture of effective vaccines. Through a historic approach, this book will allow for those new to the field, or those with insufficient background in the sciences, to have an easier entry point. Even scientists already working in the field may better appreciate how discoveries made in the past can impact the direction of future research.
Download or read book Encyclopedia of Malaria written by and published by Springer. This book was released on 2018-07-12 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Encyclopedia of Malaria represents a vast databank of information about the study of malaria. It provides an overview of the historical, rapid and significant developments that have occurred in malaria research, including the 2002 genome sequencing of Plasmodium falciparum and its mosquito vector, Anopheles gambiae. This work provides a concise source of up-to-date research findings in the form of definitions and essays and present comprehensive coverage of topics from history to findings to diagnosis and treatment, written by recognized malaria researchers with practical experience. It appeals to a diverse audience, including malaria researchers, teachers, investigators and public health professionals.
Download or read book Molecular Evolution of the Major Histocompatibility Complex written by Jan Klein and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt: From molecules to populations and back In biology, the most vigorous organisms often ensue from a union of two disparate, pure lines. In science, too, laws of hybrid vigor seem to operate at the interface between two disciplines, an interface that often proves to be fertile ground for germinating concepts and new outlooks. The fringes of research into the major histocompatibility complex (Mhc) have provided such an interface several times in the past and the encounters have invigorated fields such as transplantation biology, cellular immunology, and immunogenetics. In the last few years, a new interface has been emerging between Mhc and evolutionary genetics, and particularly the branch of evolutionary genetics dealing with molecular evolution. Mhc research relies upon molecular evolutionary genetics, with its grand superstructure of mathematical formulations, to come to grips with the events leading to and maintaining the Mhc polymorphism. Without the armament of rigorous statistical procedures developed by evolutionary geneticists, the intricate relationships among Mhc genes cannot be resolved. It will undoubtedly be a molecular geneticist who is the final arbiter in the dispute concerning the nature of the selection pressure molding the Mhc genes. And it is doubtful whether the true function of Mhc can ever be comprehended without the vantage point afforded by the elucidation of its evolutionary history.
Download or read book World Malaria Report 2015 written by World Health Organization and published by World Health Organization. This book was released on 2016-01-30 with total page 283 pages. Available in PDF, EPUB and Kindle. Book excerpt: The World Malaria Report 2015assesses global malaria disease trends and changes in the coverage and financing of malaria control programs between 2000 and 2015. It also summarizes progress towards international targets, and provides regional and country profiles that summarize trends in each WHO region and each country with malaria. The report is produced with the help of WHO regional and country offices, ministries of health in endemic countries, and a broad range of other partners. The data presented are assembled from the 96 countries and territories with ongoing malaria transmission, and a further five countries that have recently eliminated malaria. Most data are those reported for 2014 and 2015, although in some cases projections have been made into 2015, to assess progress towards targets for 2015.
Download or read book Malaria written by Irwin W. Sherman and published by Amer Society for Microbiology. This book was released on 1998-01 with total page 575 pages. Available in PDF, EPUB and Kindle. Book excerpt: Every 30 seconds a death is caused by Malaria. This book brings together recent advances in our understanding of the basic biology, genetics and pathogenesis of malaria, to facilitate the rapid generation of new insights and interventions. Each chapter is written by a leading expert(s), and serves as both a useful introduction to the area and a helpful set of references. Malaria: Parasite Biology, Pathogenesis and Protection is a useful entry point for graduate and medical students, scientists and individuals engaged in a subspecialty of Malaria research, as well as those who are simply interested in getting a grasp on the present status of this ever burgeoning public health problem.
Download or read book Rodent Malaria written by R. Killick-Kendrick and published by Elsevier. This book was released on 2012-12-02 with total page 435 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rodent Malaria reviews significant findings concerning malaria parasites of rodents, including their taxonomy, zoogeography, and evolution, along with life cycles and morphology; genetics and biochemistry; and concomitant infections. This volume is organized into eight chapters and begins by sketching out the history of the discovery of rodent as well as aspects of parasitology, immunology, and chemotherapy. These concepts are investigated two decades following Ignace Vincke's major discovery and Meir Yoeli's successful establishment of the method of cyclical transmission of the parasite. The following chapters focus on the taxonomy and systematics of the subgenus Vinckeia, with reference to the concepts of species and subspecies of animals and the degree to which they apply to malaria parasites, in particular to those of rodents. The discussion then shifts to how the rodent malaria parasites provide a unique insight into the subcellular organization of Plasmodium species, the use of rodent malaria as an experimental model to study immunological responses, and infectious agents that interact with malaria parasites. The book concludes with a chapter on malaria chemotherapy, with emphasis on the value of rodent malaria in antimalarial drug screening and the use of antimalarial drugs as biological probes. This book will be of interest to protozoologists and physicians as well as those from other disciplines including biochemistry, immunology, pharmacology, cell biology, and genetics.
Download or read book Current Topics in Malaria written by Alfonso J. Rodriguez-Morales and published by . This book was released on 2016-11-30 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Biology and Identification of the Coccidia Apicomplexa of Carnivores of the World written by Donald W. Duszynski and published by Academic Press. This book was released on 2018-06-29 with total page 315 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fundamental concept of The Biology and Identification of the Coccidia (Apicomplexa) of Carnivores of the World is to provide an up-to-date reference guide to the identification, taxonomy, and known biology of apicomplexan intestinal and tissue parasites of carnivores including, but not limited to, geographic distribution, prevalence, sporulation, prepatent and patent periods, site(s) of infection in the definitive and (if known) intermediate hosts, endogenous development, cross-transmission, pathology, phylogeny, and (if known) their treatments. These data will allow easy parasite recognition with a summation of virtually everything now known about the biology of each parasite species covered. The last (very modest) and only treatise published on this subject was in 1981 so this book fills a fundamental gap in our knowledge of what is now known, and what is not, about the coccidian parasites that infect and sometimes kill carnivores and/or their prey that can harbor intermediate stages, including many domestic and game animals. Offers line drawings and photomicrographs of many parasite species that will allow easy diagnosis and identification by both laypersons and professionals (veterinarians, wildlife biologists, etc.) Presents a complete historical rendition of all known publications on carnivore coccidia for all carnivore families and evaluates the scientific and scholarly merit of each apicomplexan species relative to the current body of knowledge Provides a complete species analysis and their known biology of all coccidia described from each carnivore lineage and species Reviews the most current taxonomy of carnivores and their phylogenetic relationships to help assess host-specificity patterns that may be apparent Evaluates what little cross-transmission work is available to help understand the complexities of those coccidians that use two hosts (e.g., Sarcocystis, Besnoitia, and others) Provides known treatments for the various parasite genera/species
Download or read book Malaria Parasites written by Andrew P. Waters and published by Caister Academic Press Limited. This book was released on 2004 with total page 578 pages. Available in PDF, EPUB and Kindle. Book excerpt: The completion of the Plasmodium falciparum genome sequence in late 2002 heralded a new era in malaria research. The search began in earnest for new drugs and vaccines to combat malaria, a disease which afflicts up to 500 million people worldwide and is responsible for the deaths of more than one million people each year. The new genomic data is aiding a greater understanding of the living parasite and its interaction with the insect vector and human host. In this book internationally renowned experts provide up-to-date reviews of the most important aspects of post-genomic malaria research. Topics covered include: the P. falciparum genome and model parasites, bioinformatics and genome databases, microsatellite analysis, analysis of chromosome structure, cell cycle to RNA polymerase I and II mediated gene expression, role of the nuclear genome, the parasite surface and cell biology, and much more. The book is essential to all researchers working in this highly topical field and is recommended reading for scientists in other areas of biology and medicine.
Download or read book Diagnostic Medical Parasitology written by Lynne Shore Garcia and published by John Wiley & Sons. This book was released on 2020-08-06 with total page 1388 pages. Available in PDF, EPUB and Kindle. Book excerpt: Diagnostic Medical Parasitology covers all aspects of human medical parasitology and provides detailed, comprehensive, relevant diagnostic methods in one volume. The new edition incorporates newly recognized parasites, discusses new and improved diagnostic methods, and covers relevant regulatory requirements and has expanded sections detailing artifact material and histological diagnosis, supplemented with color images throughout the text.
