Download or read book Associations Between Responses to the Rhoptry Associated Membrane Antigen of Plasmodium Falciparum and Immunity to Malaria Infection written by and published by . This book was released on 2004 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rhoptry proteins participate in the invasion of red blood cells by merozoites during the malaria parasite's asexual-stage cycle. Interference with the rhoptry protein function has been shown to prevent invasion, and three rhoptry proteins have been suggested as potential components of a vaccine against malaria. Rhoptry associated membrane antigen (RAMA) is a 170-kDa protein of Plasmodium falciparum which is processed to a 60-kDa mature form in the rhoptries. p60/RAMA is discharged from rhoptries of free merozoites and binds to the red-cell membrane before being internalized to form part of the parasitophorous vacuole of the newly developing ring. We examined the range of anti-RAMA responses in individuals living in an area of endemicity for malaria and determined its association with clinical immunity. RAMA is immunogenic during infections, and at least three epitopes within RAMA are recognized by hyperimmune sera in immunoblots. Sera from individuals living in a region of Vietnam where malaria is endemic possessed strong antibody responses toward two C-terminal regions of RAMA. Cytophilic antibody isotypes (immunoglobulin G1 [IgG1] and IgG3) predominated in humoral responses to both C-terminal epitopes. Acute episodes of P. falciparum infection result in significant boosting of levels of antibody to an epitope at the extreme C terminus of RAMA that harbors the red-cell-binding domain. Immunity to P. falciparum infection was linked to elevated levels of IgG3 responses to this functional domain of RAMA, suggesting that the region may contain a protective epitope useful for inclusion in a multiepitope vaccine against malaria.
Download or read book Progress in Malaria Research written by Lee O. Koning and published by Nova Publishers. This book was released on 2007 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: Malaria is an infectious disease that is widespread in tropical and subtropical regions. It infects between 300 and 500 million people every year and causes between one and three million deaths annually, mostly among young children in Sub-Saharan Africa. Malaria is not just a disease commonly associated with poverty, but is also a cause of poverty and a major hindrance to economic development. Malaria is one of the most common infectious diseases and an enormous public health problem. The disease is caused by protozoan parasites of the genus Plasmodium. The most serious forms of the disease are caused by Plasmodium falciparum and Plasmodium vivax, but other related species (Plasmodium ovale and Plasmodium malariae) can also infect humans. This group of human-pathogenic Plasmodium species are usually referred to as malaria parasites. This book presents leading-edge new research in this field.
Download or read book Index Medicus written by and published by . This book was released on 2004 with total page 1876 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vols. for 1963- include as pt. 2 of the Jan. issue: Medical subject headings.
Download or read book Advances in Malaria Research written by Deepak Gaur and published by John Wiley & Sons. This book was released on 2016-11-30 with total page 615 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thoroughly reviews our current understanding of malarial biology Explores the subject with insights from post-genomic technologies Looks broadly at the disease, vectors of infection, and treatment and prevention strategies A timely publication with chapters written by global researchers leaders
Download or read book International Review of Cell and Molecular Biology written by Kwang W. Jeon and published by Academic Press. This book was released on 2011-09-02 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt: International Review of Cell & Molecular Biology presents current advances and comprehensive reviews in cell biology – both plant and animal. Authored by some of the foremost scientists in the field, each volume provides up-to-date information and directions for future research. Articles in this volume include Transgenic Mouse Models in Angiogenesis and Lymphangiogenesis,Morphogenesis in Giant-celled Algae,Plasmodium in the Post-Genomic Era: New Insight into the Molecular Cell Biology of Malaria Parasites, Role of Nuclear Lamins in Nuclear Organization, Cellular Signalling and Inherited Diseases, New Insights into the Mechanisms of Macroautophagy in Mammalian Cells. Covers the latest on transgenic mouse models in angiogenesis and lymphangiogenesis Includes information on morphogenesis in giant-celled algae Provides new insights into the mechanisms of macroautophagy in mammalian cells
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 Malaria written by Institute of Medicine and published by National Academies Press. This book was released on 1991-02-01 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: Malaria is making a dramatic comeback in the world. The disease is the foremost health challenge in Africa south of the Sahara, and people traveling to malarious areas are at increased risk of malaria-related sickness and death. This book examines the prospects for bringing malaria under control, with specific recommendations for U.S. policy, directions for research and program funding, and appropriate roles for federal and international agencies and the medical and public health communities. The volume reports on the current status of malaria research, prevention, and control efforts worldwide. The authors present study results and commentary on the: Nature, clinical manifestations, diagnosis, and epidemiology of malaria. Biology of the malaria parasite and its vector. Prospects for developing malaria vaccines and improved treatments. Economic, social, and behavioral factors in malaria control.
Download or read book Immunity to Malaria and Vaccine Strategies written by Kevin N. Couper and published by Frontiers Media SA. This book was released on 2019-10-10 with total page 487 pages. Available in PDF, EPUB and Kindle. Book excerpt: Malaria, caused by infection with protozoan parasites belonging to the genus Plasmodium, is a highly prevalent and lethal infectious disease, responsible for 435,000 deaths in 2017. Optimism that malaria was gradually being controlled and eliminated has been tempered by recent evidence that malaria control measures are beginning to stall and that Plasmodium parasites are developing resistance to front-line anti-malarial drugs. An important milestone has been the recent development of a malaria vaccine (Mosquirix) for use in humans, the very first against a parasitic infection. Unfortunately, this vaccine has modest and short-lived efficacy, with vaccinated individuals possibly being at increased risk of severe malarial disease when protection wanes. Thus, to define new ways to combat malaria, there remains an urgent requirement to identify the immune mechanisms that promote resistance to malarial disease and to understand why these so often fail. The review and primary research articles in this Research Topic illustrate the breadth of research performed worldwide aimed to understand the biology of the Plasmodium parasite, the roles of the various cell types that act within the immune response against the parasite, and the parasitological and immunological basis of severe malarial disease. The articles in section 1 exemplify the different vaccination strategies being developed and tested by the research community in the fight against malaria. The articles in section 2 review important overarching aspects of malaria immunology and the use of models to study human malaria. The articles in section 3 describe the ways through which the Plasmodium parasite is initially recognised by the immune system during infection, how the parasite can directly impact this critical event to restrict anti-Plasmodial immunity, and resolve the roles of key innate cell populations, such as dendritic cells, in coordinating malarial immunity. The articles in sections 4-6 outline the roles T and B cell populations play during malaria, highlighting the activation, diversification and regulation of the crucial cell types during malaria, and discuss some of the reasons adaptive immunity to malaria is often considered so poor compared with other diseases. The articles in section 7 provide up to date information on the pathogenesis of cerebral malaria, bridging our understanding of the syndrome in humans with information learned from animal models. Overall, the articles in this research, many of which are published by leaders in the malaria field, emphasize the imagination and technical advances being employed by researchers against malaria. We acknowledge the initiation and support of this Research Topic by the International Union of Immunological Societies (IUIS). We hereby state publicly that the IUIS has had no editorial input in articles included in this Research Topic, thus ensuring that all aspects of this Research Topic are evaluated objectively, unbiased by any specific policy or opinion of the IUIS.
Download or read book World Malaria Report 2018 written by World Health Organization and published by World Health Organization. This book was released on 2019-02-12 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: This year s report shows that after an unprecedented period of success in global malaria control progress has stalled. Data from 2015?2017 highlight that no significant progress in reducing global malaria cases was made in this period. There were an estimated 219 million cases and 435 000 related deaths in 2017. The World malaria report 2018 draws on data from 90 countries and areas with ongoing malaria transmission. The information is supplemented by data from national household surveys and databases held by other organizations.
Download or read book Human Antibody Responses to Plasmodium Falciparum Merozoite Rhoptry Associated Protein 1 RAP1 written by Peter Nkong Fonjungo and published by . This book was released on 1999 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Complement Activation in Malaria Immunity and Pathogenesis written by José A. Stoute and published by Springer. This book was released on 2018-07-03 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plasmodium falciparum malaria is responsible for the deaths of nearly 500,000 people each year. Much attention has been paid to antibody and cellular mechanisms of immunity against this pathogen. By contrast, the role that the complement system plays in immunity and pathogenesis in this infection is not very well recognized or understood. Based on the work of a number of research groups, we know that complement plays an important role in these processes. In this book, some of the leading scientists in the field discuss the mechanisms of complement activation during malaria infection as well as the role of complement in the pathogenesis of key syndromes such as severe malarial anemia, cerebral malaria, and placental malaria. In addition, they review recently-identified complement evasion strategies of P. falciparum merozoites, and how these mechanisms may translate into paradoxical enhancement of infection rather than protection. Finally, they also discuss the role of the mosquito complement system on immunity against the parasite.
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 Cumulated Index Medicus written by and published by . This book was released on 2000 with total page 1836 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Characterization of Plasmodium Falciparum Membrane Associated Antigens and Immune Responses written by Raphael Mbadiwe Oguariri and published by . This book was released on 2003 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Malaria Immunology written by Peter Perlmann and published by Karger Medical and Scientific Publishers. This book was released on 2002-01-01 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt: Despite extensive efforts to control it, malaria is still one of the most devastating infectious diseases worldwide. This book, now in its second edition, provides a broad and up-to-date overview of the rapidly expanding field of malaria immunology and its importance in the control of this disease. The first section deals with the malaria parasite and its interactions with both the vertebrate host and the mosquitoes which transmit the disease. In the second part, the mechanisms of immunity and their regulation by environmental and genetic factors are discussed. Finally, this volume contains several chapters on malaria vaccine development, describing the application of the most recent vaccine technologies as well as ongoing and planned vaccine trials. Authored by well-recognized experts, this volume not only demonstrates the rapid progress being made in the search for vaccines against malaria, but also broadens our understanding of immunity to infection in general. It is therefore highly recommended reading for all scientists and professionals in the fields of immunology, infection and vaccine development.
Download or read book Human Antibody Responses to Plasmodium Falciparum Merozoite Rhoptry Associated Protein 1 RAP1 written by Peter Nkong Fonjungo and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analysis of Immune Responses Related to Protection Against P Falciparum Pre erythrocytic Stages written by Blanca-liliana Perlaza and published by . This book was released on 2000 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: Malaria is one of the most evasive infectious diseases in the world. The development of a vaccine against the human malaria parasite Plasrnodium falciparum requires first, the identification of the parasitic antigens involved in protection, and second, the use of appropriate animal models to study protective immune mechanisms and to optimize immunization protocols intended to induce them. A subset of P. falciparum preerythrocytic antigens (LSA l, LSA3, SALSA and STARP) have been identified and characterized. Among them, LSA3 displayed promising antigenic, immunogenic and protective efficacy in différent animal models. The current thesis describes the immune responses induced by these antigens, particularly the immunogenicity and protective potential of LSA3 in mice and Aotus monkeys. Aotus lemurinus griseirnembra is a small New World monkey. We confirmed that the species A./.griseimembra is susceptible to infection by P. falciparum sporozoites and we were able to maintain the parasite by cyclical passages through Aotns and mosquitoes. When Aotus lemurinus were immunized with either, a mixture of lipopeptides from 4 P. falciparum preerythrocytic antigens or LSA3 recombinant proteins, the monkeys were able to induce high cellular and humoral immune responses, indicating that it is a suitable animal model for evaluating immunogenicity of pre-erythrocytic antigens. Finally, for the first time we report evidence of protection against challenge with P. falciparum sporozoites in Aotus monkeys.Taking advantage of the recent advances in peptide synthesis, we used 17 Long Synthetic Peptides (LSP) covering all the LSA3 protein to confirm the antigenicity of LSA3 antigen in individuals highly exposed to natural P. falciparum infections. In addition, these LSP were found to be strongly immunogenic in mice, eliciting T-helper, CTL responses and specific antibody production. On the other hands, LSA3-DNA-based immunization in mice induced high immune responses against different regions of the molecule and preferentially generated responses Th 1-type. Moreover, this immunization protocol was able to induce protection against the challenge with P. yoelii sporozoites. These findings confirm previous results about the vaccine potential of LSA3 and allow to validate Aolus monkeys as model for preerythrocytic malaria vaccines research. They open the way to a great number of future studies on P. falciparum pre-erythrocytic stages.
