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 871 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 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 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 Biochemical Cellular and Immunologic Aspects During Early Interaction Between Trypanosoma Cruzi and Host Cell written by Rosa Lidia Solís-Oviedo and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The close parasite-host relationship involves different aspects such as the biochemical, physiological, morphological, and immunological adaptations. Studies on parasite-host interaction have provided a myriad of information about its biology and have established the building blocks for the development of new drug therapies to control the parasite. Several mechanisms for the parasite invasion have been proposed through in vivo or in vitro experimental data. Since the first histological studies until the studies on the function/structure of the involved molecules, this complex interaction has been roughly depicted. However, new recent strategies as genetic and proteomic approaches have tuned knowledge on how the host reacts to the parasite and how the parasite avoids these host's reactions in order to survive.
Download or read book Molecular Interactions Between Trypanosoma Cruzi and Murine Host Cells written by Cheryl D. Davis and published by . This book was released on 1988 with total page 192 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 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 Trypanosoma Cruzi Study on Parasite Culture Conditions and Non phagocytic Host Cell Interaction written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 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 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 Triatominae The Biology of Chagas Disease Vectors written by Alessandra Guarneri and published by Springer Nature. This book was released on 2021-07-06 with total page 642 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book aims to present updated knowledge on various aspects of the natural history, biology, and impact of triatomines to all interested readers. Each chapter will be written by authorities in the respective field, covering topics such as behavior, neurophysiology, immunology, ecology, and evolution. The contents will consider scientific, as well as innovative perspectives, on the problems related to the role of triatomine bugs as parasite vectors affecting millions in the Latin American region.
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 The Biology of Trypanosomes written by Leslie Hudson and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 189 pages. Available in PDF, EPUB and Kindle. Book excerpt: African and South American trypanosomiases are notable features of clinical and veterinary practice in their respective endemic areas and, as such, are of considerable economic importance. Scientifically, however, their importance ex tends beyond their clinical significance, as the trypano somes are intriguing and easily manipulated models for the study of the control of gene expression, membrane chemistry, proliferation and differentiation. It is clear from the scientific press that the rate of advance has "hotted" up in these areas of trypanosome research over the past 5 years and so a single-topic volume within the scope of the present series seemed timely. As ever, the final admix ture of review topics was a compromise between what was appropriate and what was available - fortunately with the former in vast excess. I should like to highlight two omissions, made for en tirely different reasons. The first is a detailed treatment of the molecular biology of the variant surface glycopro teins of the African trypanosomes (in particular Trypano soma brucei and T. equiperdum). This topic has been the subject of several reviews, for example, BORST and CROSS (1982)1 and TURNER (1982)2, and so was excluded from the present volume. The second omission is a review of the first-class work on genetic recombination from the group of Dr. Leo Jenni at the Schweizerisches Tropeninsti tut, Basel. This group has used isoenzyme markers to show that T.
