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Academic literature on the topic 'Vaccination – Genetic aspects'
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Journal articles on the topic "Vaccination – Genetic aspects"
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Bondarev, V. P., V. A. Shevtsov, I. N. Indikova, E. E. Evreinova, and D. V. Gorenkov. "Rotavirus Epidemiology and Vaccination Tactics." BIOpreparations. Prevention, Diagnosis, Treatment 19, no. 2 (June 16, 2019): 81–87. http://dx.doi.org/10.30895/2221-996x-2019-19-2-81-87.
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Rotavirus infection is a widespread cause of severe gastroenteritis in children in low-income countries. Specific prophylaxis in young children has become the most important means of combating severe rotavirus gastroenteritis. The review presents current data on the molecular biology and genetic diversity of rotaviruses, interaction of viral proteins with host cell receptors, molecular aspects of infectivity and pathogenesis of rotavirus infection, and the development of immunity. It addresses a new approach to the epidemiology of rotavirus infection which regards it as a manageable infection, it illustrates the specificity of the epidemic process based on data gained from extensive experience in vaccination, and summarises relevant information on the introduction of rotavirus vaccines into the international healthcare practice. The paper summarises risks associated with the use of vaccines based on the analysis of WHO statistics, scientific publications on the epidemiology of rotavirus infection, and the results of vaccination. It analyses approaches of the competent authorities of some countries to the tactics of vaccination against rotavirus infection and the WHO stance on the use of existing vaccines for the prevention of rotavirus infection. A conclusion was made that it is necessary to further improve the tactics of vaccine prevention of rotavirus infection in Russia, to study the incidence of idiopathic intussusception, and to conduct further studies aimed at characterisation of existing and newly emerging genotypes of rotavirus.
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PIKUŁA, ANNA, and KRZYSZTOF ŚMIETANKA. "Selected aspects of infectious bursal disease – the current state of knowledge." Medycyna Weterynaryjna 74, no. 10 (2023): 6138–2023. http://dx.doi.org/10.21521/mw.6138.
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Infectious bursal disease (IBD) is a highly infectious and contagious immunosuppressive viral disease of chickens with a worldwide economic significance to the poultry industry. Over fifty years have passed since the first confirmed occurrence of the disease, and the virus has spread all over world and evolved into multiple genetic, antigenic and pathotypic variants, becoming a serious threat to the poultry industry. The primary tool in IBD eradication is the maintenance of strict biosecurity in poultry farms and implementation of vaccination programmes which should take into account the current epidemiological knowledge about the IBDV strains circulating in the field. This review article presents the current state of knowledge about the infectious bursal disease virus (IBDV) with special regard to the molecular biology of the virus, immunological aspects, as well as current and future prevention strategies.
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Teale, Alan. "Biotechnology: a key element in the CGIAR's livestock research programme." Outlook on Agriculture 26, no. 4 (December 1997): 217–25. http://dx.doi.org/10.1177/003072709702600403.
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The unique potential of biotechnology to provide new solutions to old problems constraining the contribution of livestock to farming systems in the developing world is emphasized in this paper. An overview of biotechnological aspects of livestock research within the CGIAR, including a description of the research approaches being adopted at the International Livestock Research Institute, is provided. The products of the research are then identified, and their potential applications in disease diagnosis and vaccination, as well as in the fields of animal breeding and genetic improvement, are described.
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HELGESSON, GERT, and STEFAN ERIKSSON. "Four Themes in Recent Swedish Bioethics Debates." Cambridge Quarterly of Healthcare Ethics 20, no. 3 (May 20, 2011): 409–17. http://dx.doi.org/10.1017/s0963180111000090.
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A wide variety of bioethical themes have recently been debated and researched in Sweden, including genetic screening, HPV vaccination strategies, end-of-life care, injustices and priority setting in healthcare, dual-use research, and the never-ending story of scientific fraud. Also, there are some new events related to Swedish biobanking that might be of general interest. Here we will concentrate on four themes: end-of-life care, dual-use research, scientific fraud, and biobanking.
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Mehra, Narinder K., and Gurvinder Kaur. "MHC-based vaccination approaches: progress and perspectives." Expert Reviews in Molecular Medicine 5, no. 7 (February 24, 2003): 1–17. http://dx.doi.org/10.1017/s1462399403005957.
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The major histocompatibility complex (MHC) harbours genes whose primary function in regulating immune responsiveness to infection is to present foreign antigens to cytotoxic T lymphocytes (CTLs) and T helper cells. In the case of infection by human immunodeficiency virus (HIV), defining the optimal HIV epitopes that are recognised by CTLs is important for vaccine design, and this in turn will depend on the characteristics of the predominant infecting virus. Moreover, the particular MHC human leukocyte antigens (HLAs) expressed by a geographical population is important since these are likely to determine which HIV epitopes are immunodominant in the anti-HIV immune response. Consideration of these aspects has lead to the dawn of a new era of MHC-based vaccine design, in which the CTL epitopes are selected on the basis of the frequency of restricting MHC alleles. This article reviews data on the distribution patterns of molecular subtypes of HLA class I and class II extended haplotypes, discussing distribution among Asian Indians but with reference to global distributions. These data provide a genetic basis for the possible predisposition and fast progression of HIV infections in the Indian population. Since there is selective predominance of different HLA alleles and haplotypes in different populations, a dedicated screening effort is required at the global level to develop MHC-based vaccines against infectious diseases. It is hoped that this might lead to the development of multivalent, poly-epitope, subtype-specific HIV vaccines that are specific for the target geographical location.
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Tusup, Marina, Lars E. French, Mara De Matos, David Gatfield, Thomas Kundig, and Steve Pascolo. "Design of in vitro Transcribed mRNA Vectors for Research and Therapy." CHIMIA International Journal for Chemistry 73, no. 5 (May 29, 2019): 391–94. http://dx.doi.org/10.2533/chimia.2019.391.
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The use of in vitro transcribed messenger RNA (ivt mRNA) for vaccination, gene therapy and cell reprograming has become increasingly popular in research and medicine. This method can be used in vitro (transfected in cells) or administered naked or formulated (lipoplexes, polyplexes, and lipopolyplexes that deliver the RNA to specific organs, such as immune structures, the lung or liver) and is designed to be an immunostimulatory or immunosilent agent. This vector contains several functional regions (Cap, 5' untranslated region, open reading frame, 3' untranslated region and poly-A tail) that can all be optimised to generate a highly efficacious ivt mRNA. In this study, we review these aspects and report on the effect of the ivt mRNA purification method on the functionality of this synthetic transient genetic vector.
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Ambinder, Alexander J., Pareen J. Shenoy, Neha Malik, Alison Maggioncalda, Loretta J. Nastoupil, and Christopher R. Flowers. "Exploring Risk Factors for Follicular Lymphoma." Advances in Hematology 2012 (2012): 1–13. http://dx.doi.org/10.1155/2012/626035.
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Follicular lymphoma (FL) is an indolent malignancy of germinal center B cells with varied incidence across racial groups and geographic regions. Improvements in the classification of non-Hodgkin lymphoma subtypes provide an opportunity to explore associations between environmental exposures and FL incidence. Our paper found that aspects of Western lifestyle including sedentary lifestyle, obesity, and diets high in meat and milk are associated with an increased risk of FL. Diets rich in fruits and vegetables, polyunsaturated fatty acids, vitamin D, and certain antioxidants are inversely associated with FL risk. A medical history of Sjogren's syndrome, influenza vaccination, and heart disease may be associated with FL incidence. Associations between FL and exposure to pesticides, industrial solvents, hair dyes, and alcohol/tobacco were inconsistent. Genetic risk factors include variants at the 6p21.32 region of the MHC II locus, polymorphisms of the DNA repair geneXRCC3, and UV exposure in individuals with certain polymorphisms of the vitamin D receptor. Increasing our understanding of risk factors for FL must involve integrating epidemiological studies of genetics and exposures to allow for the examination of risk factors and interactions between genes and environment.
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Eckmann, Lars, and Frances D. Gillin. "Microbes and Microbial Toxins: Paradigms for Microbial- Mucosal Interactions I. Pathophysiological aspects of enteric infections with the lumen-dwelling protozoan pathogenGiardia lamblia." American Journal of Physiology-Gastrointestinal and Liver Physiology 280, no. 1 (January 1, 2001): G1—G6. http://dx.doi.org/10.1152/ajpgi.2001.280.1.g1.
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Giardia lamblia is one of the most important causes of waterborne diarrheal disease worldwide, and giardiasis is the most common protozoan infection of the human small intestine. Symptomatic infection is characterized by diarrhea, abdominal pain, and malabsorption, leading to malnutrition and weight loss, particularly in children. The pathogen resides strictly in the lumen of the small intestine, and infection is typically not accompanied by significant mucosal inflammation. Clinical and experimental studies indicate that B cell-dependent host defenses, particularly IgA, are important for controlling and clearing Giardia infection, although B cell-independent mechanisms also contribute to this outcome. In contrast to antigiardial host defenses, much less is known about the pathophysiological mechanisms underlying the clinical symptoms of giardiasis, partly because of the current lack of suitable model systems. In addition to being an important human enteric pathogen, Giardia is an interesting model organism for gaining basic insights into genetic innovations that led to evolution of eukaryotic cells, since it belongs to the earliest diverging eukaryotic lineage known. The completion of the giardial genome project will increase understanding of the basic biology of the protozoan and will help us to better understand host pathogen-interactions as a basis for developing new vaccination and therapeutic strategies.
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Eckert, Johannes, and Peter Deplazes. "Biological, Epidemiological, and Clinical Aspects of Echinococcosis, a Zoonosis of Increasing Concern." Clinical Microbiology Reviews 17, no. 1 (January 2004): 107–35. http://dx.doi.org/10.1128/cmr.17.1.107-135.2004.
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SUMMARY Echinococcosis in humans is a zoonotic infection caused by larval stages (metacestodes) of cestode species of the genus Echinococcus. Cystic echinococcosis (CE) is caused by Echinococcus granulosus, alveolar echinococcosis (AE) is caused by E. multilocularis, and polycystic forms are caused by either E. vogeli or E. oligarthrus. In untreated cases, AE has a high mortality rate. Although control is essentially feasible, CE remains a considerable health problem in many regions of the northern and southern hemispheres. AE is restricted to the northern hemisphere regions of North America and Eurasia. Recent studies have shown that E. multilocularis, the causative agent of AE, is more widely distributed than previously thought. There are also some hints of an increasing significance of polycystic forms of the disease, which are restricted to Central and South America. Various aspects of human echinococcosis are discussed in this review, including data on the infectivity of genetic variants of E. granulosus to humans, the increasing invasion of cities in Europe and Japan by red foxes, the main definitive hosts of E. multilocularis, and the first demonstration of urban cycles of the parasite. Examples of emergence or reemergence of CE are presented, and the question of potential spreading of E. multilocularis is critically assessed. Furthermore, information is presented on new and improved tools for diagnosing the infection in final hosts (dogs, foxes, and cats) by coproantigen or DNA detection and the application of molecular techniques to epidemiological studies. In the clinical field, the available methods for diagnosing human CE and AE are described and the treatment options are summarized. The development of new chemotherapeutic options for all forms of human echinococcosis remains an urgent requirement. A new option for the control of E. granulosus in the intermediate host population (mainly sheep and cattle) is vaccination. Attempts are made to reduce the prevalence of E. multilocualaris in fox populations by regular baiting with an anthelmintic (praziquantel). Recent data have shown that this control option may be used in restricted areas, for example in cities, with the aim of reducing the infection risk for humans.
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Sang, Helen. "DISEASE RESISTANCE AND OTHER APPLICATIONS OF TRANSGENESIS IN THE CHICKEN." Reproduction, Fertility and Development 25, no. 1 (2013): 320. http://dx.doi.org/10.1071/rdv25n1ab345.
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Genetic modification of the chicken in terms of gene addition is now robust and efficient. Transgenes can be introduced by injection of lentiviral vectors into chick embryos or by transfection of transposon vectors into embryos or primordial germ cells in vitro. Lentiviral vectors are limited in the size of transgene they can incorporate but we have generated several different transgenic lines using HIV-derived vectors and have observed high levels of transgene expression and tissue-specific expression using regulatory sequences from several genes. M. McGrew (The Roslin Institute) has established primordial germ cell lines and effective methods for transfection with piggyBac and Tol2 transposon vectors. The primordial cells are injected into chick embryos where they populate the developing gonads and contribute to the germline in mature birds. The availability of primordial germ cell lines will also form the basis of using artificial site-specific nucleases for gene knockout and potentially gene targeting in the chicken. These technologies facilitate the application of transgenesis in the chicken for basic research and for potential applications in poultry breeding. The chick embryo is an invaluable model for studying vertebrate development as the embryos can be accessed in ovo or in culture at the earlier stages of development. Embryos can be transfected with transgenes by electroporation and manipulated to study many aspects of development. We are developing transgenic chickens in which fluorescent protein reporters are expressed either ubiquitously or in targeted cell types. These form the basis of novel tools for increasing the value of the chick embryo in studying development. We provide fertile eggs from these lines to other research groups and are investigating the development of macrophages using a macrophage-targeted reporter. The potential for the use of genetic modification to be used in poultry breeding can now be explored. Commercial poultry production is challenged by several major pathogens including avian influenza. Flocks can be protected by good biosecurity measures and/or vaccination but vaccination is not always effective. It may be possible to add novel genes to the chicken genome targeting avian influenza virus replication. We are developing this approach (with L. Tiley, Cambridge University) and have generated transgenic chickens that do not transmit avian influenza when directly infected with H5N1 virus.
Dissertations / Theses on the topic "Vaccination – Genetic aspects"
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Baynam, Gareth. "Genetic influences on vaccine response in children." University of Western Australia. School of Paediatrics and Child Health, 2008. http://theses.library.uwa.edu.au/adt-WU2008.0259.
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Vaccination is one of the most efficacious public health interventions1 and has been increasingly used to combat non-infectious diseases. Mechanisms underlying vaccine responses overlap with those regulating immune responses in health and disease. Therefore, an understanding of mechanisms underpinning these responses will have broad implications. Variation in immune response genes contributes to impaired vaccine responses2-4. Understanding the contribution of genetic variants to vaccine responses is likely to be particularly important in early life given the generalized functional immaturity of the immune system in infants and the highly variable kinetics of its maturation over the first few years of life5-7. However, studies of genetic influences on early childhood vaccine responses are scarce. Since a number of genes from several pathways are likely to be important, a targeted approach is necessary. This thesis explored the effects and interactions of genes associated with atopy, as atopy, or the genetic risk for it, has been associated with modulation of early childhood vaccine responses. This thesis aimed to: 1) investigate genetic variants associated with atopy on early childhood vaccine responses; 2) examine interactions between these genetic variants and non-genetic factors; 3) approach developmental genetic influences on genetic effects and their interactions; and 4) extend findings on vaccine responses to other immunological phenotypes and disease outcomes.
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Hollister, Kristin N. "Elucidating the role of BCL6 in helper T cell activation, proliferation, and differentiation." Thesis, 2014. http://hdl.handle.net/1805/5930.
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Indiana University-Purdue University Indianapolis (IUPUI)The transcriptional repressor BCL6 has been shown to be essential for the differentiation of germinal center (GC) B cells and follicular T helper (TFH) cells. The interaction of TFH and GC B cells is necessary for the development of high affinity antibodies specific for an invading pathogen. Germline BCL6-deficient mouse models limit our ability to study BCL6 function in T cells due to the strong inflammatory responses seen in these mice. To overcome this, our lab has developed a new BCL6 conditional knockout (cKO) mouse using the cre/lox system, wherein the zinc finger region of the BCL6 gene is flanked by loxP sites. Mating to a CD4-Cre mouse allowed us to study the effects of BCL6 loss specifically in T cells, without the confounding effects seen in germline knockout models. Using this cKO model, we have reaffirmed the necessity of BCL6 for TFH differentiation, including its role in sustained CXCR5 surface expression, a signature marker for TFH cells. This model also allowed us to recognize the role of BCL6 in promoting the expression of PD-1, another key surface marker for TFH cells. Without BCL6, CD4+ T cells cannot express PD-1 at the high levels seen on TFH cells. Our discovery of DNMT3b as a target for BCL6 suggests BCL6-deficient T cells have increased DNA methyltransferase activity at the PD-1 promoter. This data establishes a novel pathway for explaining how BCL6, a transcriptional repressor, can activate genes. Experiments with the BCL6 cKO model have also established a role for BCL6 in naïve CD4+ T cell activation. Furthermore, we did not observe increased differentiation of other helper T cell subsets, in contrast to what has been reported elsewhere with germline BCL6-deficient models. Unexpectedly, we found decreased T helper type 2 (Th2) cells, whereas mouse models with a germline mutation of BCL6 have increased Th2 cells. These results indicate that BCL6 activity in non-T cells is critical for controlling T cell differentiation. Finally, using an HIV-1 gp120 immunization model, we have, for the first time, shown BCL6-dependent GCs to be limiting for antibody development and affinity maturation in a prime-boost vaccine scheme.
Books on the topic "Vaccination – Genetic aspects"
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Kampourakis, Kostas, and Kevin McCain. Uncertainty. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780190871666.001.0001.
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Scientific knowledge is the most solid and robust kind of knowledge that humans have because of its inherent self-correcting character. Nevertheless, anti-evolutionists, climate denialists, and anti-vaxxers, among others, question some of the best-established scientific findings, making claims unsupported by empirical evidence. A common aspect of these claims is reference to the uncertainties of science concerning evolution, climate change, vaccination, and so on. This is inaccurate: whereas the broad picture is clear, there will always exist uncertainties about the details of the respective phenomena. This book shows that uncertainty is an inherent feature of science that does not devalue it. In contrast, uncertainty advances science because it motivates further research. This is the first book on this topic that draws on philosophy of science to explain what uncertainty in science is and how it makes science advance. It contrasts evolution, climate change, and vaccination, where the uncertainties are exaggerated, and genetic testing and forensic science, where the uncertainties are usually overlooked. The goal is to discuss the scientific, psychological, and philosophical aspects of uncertainty in order to explain what it really is, what kinds of problems it actually poses, and why in the end it makes science advance. Contrary to public representations of scientific findings and conclusions that produce an intuitive but distorted view of science as certain, people need to understand and learn to live with uncertainty in science. This book is intended for anyone who wants to get a clear view of the nature of science.