Download or read book Interaction of Trypanosoma cruzi with Host Cells written by Wanderley De Souza and published by Frontiers E-books. This book was released on 2014-12-10 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: Trypanosoma cruzi is a pathogenic protozoan of the Trypanosomatidade Family, which is the etiological agent of Chagas’ disease. Chagas’ disease stands out for being endemic among countries in Latin America, affecting about 15 million people. Recently, Chagas has become remarkable in European countries as well due to cases of transmission via infected blood transfusion. An important factor that has exacerbated the epidemiological picture in Brazil, Colombia and Venezuela is infection after the oral intake of contaminated foods such as sugar cane, açai and bacaba juices. Trypanosoma cruzi is an intracellular protozoan that exhibits a complex life cycle, involving multiple developmental stages found in both vertebrate and invertebrate hosts. In vertebrate hosts, the trypomastigote form invades a large variety of nucleated cells using multiple mechanisms. The invasion process involves several steps: (a) attraction of the protozoan to interact with the host cell surface; (b) parasite-host cell recognition; (c) adhesion of the parasite to the host cell surface; (d) cell signalling events that culminate in the internalization of the parasite through endocytic processes; (e) biogenesis of a large vacuole where the parasite is initially located, and is also known as parasitophorous vacuole (PV); (f) participation of endocytic pathway components in the internalization process; (g) participation of cytoskeleton components in the internalization process; (h) transformation of the trypomastigote into the amastigote form within the PV; (i) lysis of the membrane of the PV; (j) multiplication of amastigotes within the host cell in direct contact with cell structures and organelles; (k) transformation of amastigotes into trypomastigotes, and (l) rupture of the host cell releasing trypomastigotes into the extracellular space. The kinetics of the interaction process and even the fate of the parasite within the cell vary according to the nature of the host cell and its state of immunological activation.
Download or read book Interaction of Trypanosoma Cruzi with Host Cells written by and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Trypanosoma cruzi is a pathogenic protozoan of the Trypanosomatidade Family, which is the etiological agent of Chagas' disease. Chagas' disease stands out for being endemic among countries in Latin America, affecting about 15 million people. Recently, Chagas has become remarkable in European countries as well due to cases of transmission via infected blood transfusion. An important factor that has exacerbated the epidemiological picture in Brazil, Colombia and Venezuela is infection after the oral intake of contaminated foods such as sugar cane, açai and bacaba juices. Trypanosoma cruzi is an intracellular protozoan that exhibits a complex life cycle, involving multiple developmental stages found in both vertebrate and invertebrate hosts. In vertebrate hosts, the trypomastigote form invades a large variety of nucleated cells using multiple mechanisms. The invasion process involves several steps: (a) attraction of the protozoan to interact with the host cell surface; (b) parasite-host cell recognition; (c) adhesion of the parasite to the host cell surface; (d) cell signalling events that culminate in the internalization of the parasite through endocytic processes; (e) biogenesis of a large vacuole where the parasite is initially located, and is also known as parasitophorous vacuole (PV); (f) participation of endocytic pathway components in the internalization process; (g) participation of cytoskeleton components in the internalization process; (h) transformation of the trypomastigote into the amastigote form within the PV; (i) lysis of the membrane of the PV; (j) multiplication of amastigotes within the host cell in direct contact with cell structures and organelles; (k) transformation of amastigotes into trypomastigotes, and (l) rupture of the host cell releasing trypomastigotes into the extracellular space. The kinetics of the interaction process and even the fate of the parasite within the cell vary according to the nature of the host cell and its state of immunological activation.
Download or read book American Trypanosomiasis written by Jenny Telleria and published by Elsevier. This book was released on 2010-09-03 with total page 870 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chagas disease causes severe socioeconomic impact and a high medical cost in Latin America. WHO and the World Bank consider Chagas disease as the fourth most transmittable disease to have a major impact on public health in Latin America: 120 million persons are potentially exposed, 16 to 18 million of whom are presently infected, causing 45,000 to 50,000 deaths per year. It has been calculated that approximately 2.4 million potential working years are lost because of incapacity and mortality due to the disease, for an annual cost estimated at 20 billion Euros. American Trypanosomiasis provides a comprehensive overview of Chagas disease and discusses the latest discoveries concerning the three elements that compose the transmission chain of the disease: The host: human and mammalian reservoirs The insect vectors: domestic and sylvatic vectors The causative parasite: Trypanosoma cruzi Informs and updates on all the latest developments in the field Contributions from leading authorities and industry experts
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 Biology of Trypanosoma cruzi written by Wanderley De Souza and published by BoD – Books on Demand. This book was released on 2019-12-18 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: Trypanosoma cruzi, an important zoonotic protozoan that causes Chagas disease, affects at least 8 million people in Latin America. Chagas disease is an important life-long infection in humans that can be divided into distinct clinical stages: the acute phase, where patient symptoms can vary from asymptomatic to severe; the indeterminate form, which is usually asymptomatic; and the chronic phase, where cardiomyopathy and/or digestive megasyndromes appear. In addition to its medical importance, T. cruzi is an interesting biological model for studying processes such as: (1) cell differentiation, where a non-infective stage transforms into an infective one; (2) cell invasion, where the infective stages are able to penetrate into a mammalian host cell, where they multiply several times and thus amplify the infection; and (3) evasion from the immune system, using several mechanisms. This book, with 13 chapters, has been organized in four major sections: 1. "Basic Biology," 2. "Biochemistry and Molecular Biology," 3. "Parasite"Host Cell Interaction," and 4 "Chemotherapy." The chapters include basic biological information on the protozoan lifecycle, including new information on parasite genomics and proteomics. In addition, they analyze the interaction with host cells as well the immune response and evasion, ending with information on experimental chemotherapy against Chagas disease.
Download or read book Host parasite interactions at the cellular tissue and organism level written by Xuexian Yang and published by Frontiers Media SA. This book was released on 2024-05-31 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: Protozoan and helminth parasites infect animals and humans and cause debilitating pathologies that cause a variety of morbidities and deaths worldwide. The ability of parasites to establish infection and cause disease in mammalian hosts is a result of a series of intricate mechanisms evolved by parasitic species to confront and evade the host's defensive responses, along with the ability to use the host’s metabolic and catabolic processes and host cellular organelles to their benefit. For instance, parasites may have predilection sites in the host that are not accessible to immune effector molecules and mechanisms, may acquire host-derived "masking" molecules, can vary their surface molecules, and can produce molecules that block or misguide the host immune responses. The host's interactions with the parasite, on the other hand, are critical for the initiation and induction of host signaling events that are critical in mounting formidable defensive immune responses against the invading parasite. Therefore, the ability of a parasite to successfully establish infection and cause disease largely depends on its interaction with the host and the ability of the host to mount successful and effective resistance. Thus, studying host-parasite interactions and cross-talks is critical for understanding parasite infection and adaptation mechanisms within the host, as well as for developing strategies for effective prevention and control of parasitic infections in humans and animals. The topic will cover a wide spectrum of parasitic protozoa and helminths and provide an opportunity to share new molecular and translational advances in parasitic infections and diseases.
Download or read book Host Parasite Molecular and Cellular Interactions in the Establishment and Maintenance of Protozoan Infections written by Martin M. Edreira and published by Frontiers Media SA. This book was released on 2022-06-07 with total page 223 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Early Events During Host Cell Parasite Interactions written by Patricia Sampaio Tavares Veras and published by Frontiers Media SA. This book was released on 2021-07-14 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Transcription and Splicing written by B. D. Hames and published by Oxford University Press, USA. This book was released on 1988 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gives a co-ordinated review of our present knowledge of eukaryotic RNA synthesis.
Download or read book Chagas Disease written by Veeranoot Nissapatorn and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Host Parasite Cellular and Molecular Interactions in Protozoal Infections written by K.-P. Chang and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tropical diseases such as leishmaniasis, malaria. trypanosomiasis, toxoplasmosis and amebiasis continue to plague the world, resulting in considerable morbidity and mortality, especially in the third world countries. These diseases are caused by a group of protozoa which have, over the years, undergone evolutionary adaptation to live often intracellularly in a parasitic way of life. So well-adapted have they become that they recognize the right hosts or cells to parasitize, yet at the same time they escape recognition and destruction by the host immune system. The mechanisms of such recognition and the escape of recognition are governed largely by host-parasite surface membrane interactions at the cellular and molecular level. Unique molecules produced by unusual pathways of these parasites have also been discovered and found to play important roles in their survival in the host. Understanding these mechanisms and pathways is essential not only to formulate a rational strategy for chemo- and immuno-prophylaxis and -therapy but also to unravel the mystery of biological evolution in symbiosis and parasitism. In the advent of our knowledge on the molecular biology and biochemistry of parasite membrane and other molecules, it is opportune to examine and discuss their possible roles in host-parasite recognition and interaction in a comparative approach. To highlight the recent advances of this area in various host-parasite systems, a NATO advanced Research Workshop was held from September 27 to October 1, 1986 at Hotel Villa del Mare, Acquafredda di Maratea, Italy.
Download or read book Chagas Disease written by Rubem Menna-Barreto and published by Intechopen. This book was released on 2022-07 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Even 110 years after its discovery, Chagas disease is still an important public health problem, especially in Latin America where it is endemic. The limited effect of current treatments in the chronic phase of the disease, as well as the lack of information about disease progression, are crucial challenges that justify the intense research on this illness. The interaction between the etiological agent Trypanosoma cruzi and its invertebrate and vertebrate hosts involves the regulation of the parasite virulence and host immune responses. T. cruzi presents mechanisms to evade host defenses, including resistance to oxidative species and vesicles secretion, among many others. In this context, a better understanding of the biochemical and molecular features of the parasite's success inside its hosts could contribute to the development of novel anti-T. cruzi strategies such as prototypes of drugs and vaccines. This book discusses Chagas disease and its etiological agent, including information on relevant clinical aspects such as diagnosis, treatment, biomarkers, and so on. It also presents information about cellular, molecular, and biochemical characteristics of the parasite-host interactions.
Download or read book A Conservation Assessment of the Terrestrial Ecoregions of Latin America and the Caribbean written by Eric Dinerstein and published by World Bank Publications. This book was released on 1995 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: Approach; Major ecosystem types, major habitat types, and ecoregions of LAC; Conservation status of terretrial ecoregions of LAC; Biological distinctiveness of territorial ecoregions of LAC at different biogeographic scales results; Integrating biological distinctiveness and conservation status; Conservation assessment of mangrove ecosystems.
Download or read book Chagas Disease written by Jaime Marcelo Altcheh and published by Springer Nature. This book was released on 2019-09-09 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chagas disease is a potentially life threatening condition that was historically mainly endemic to Latin America. Over the last decade, however, the disease has spread to and is increasingly prevalent in other continents such as North America and Europe, with an estimated 7 million people infected worldwide. It is primarily transmitted by insect vectors that carry the parasite Trypanosoma cruzi, the disease agent. In areas where there is vector control and in non-endemic countries, it is mainly transmitted via congenital infection. Cardiac and gastrointestinal complications are common in untreated individuals. This book offers a comprehensive overview of Chagas disease, including its vectorial and congenital transmission, and molecular diagnosis, which is essential for screening, and developing and providing timely, effective anti-trypanosomal treatment. Written by experts working with infected patients on a daily basis, it discusses the pathogenesis of congenital, cardiac, gastrointestinal and oral Chagas disease, as well as its treatment and the pharmacological aspects of drug development in this area. Chapter "Chagas Disease Treatment Efficacy Biomarkers: Myths and Realities" is available open access under a via link.springer.com.
Download or read book Molecular Mechanisms of Pathogenesis in Chagas Disease written by John M. Kelly and published by Springer Science & Business Media. This book was released on 2003-08-31 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chagas' disease, which results from infection with the single cell parasite Trypanosoma cruzi, is a debilitating condition that is a major problem in many parts of Latin America. Rapid technical progress is now facilitating dissection of the molecular mechanisms of disease pathogenesis, a process that will ultimately provide new strategies to alleviate the enormous public health burden associated with the infection. In this book, international experts review the buoyant status of Chagas' disease research as we enter the "post-genome" era and speculate on how the new findings will impact on drug and vaccine development. The chapters outline how progress is being made on several fronts ranging from parasite population genetics to human immunology. Researchers, physicians and students with an interest in any aspect of molecular parasitology should find this book to be a valuable reference
Download or read book Immune Evasion Strategies in Protozoan Host Interactions written by Alexandre Morrot and published by Frontiers Media SA. This book was released on 2020-12-29 with total page 503 pages. Available in PDF, EPUB and Kindle. Book excerpt: This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact.
Download or read book Membrane Recycling written by Geralyn M. Collins and published by Financial Times/Prentice Hall. This book was released on 1982 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:
