Download or read book The SigB PrfA Co regulon in the Foodborne Pathogen Listeria Monocytogenes written by Juliane Ollinger and published by . This book was released on 2008 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The SigmaB PrfA Co regulon in the Foodborne Pathogen Listeria Monocytogenes written by Juliane Ollinger and published by . This book was released on 2008 with total page 127 pages. Available in PDF, EPUB and Kindle. Book excerpt: Overall the results presented here show that sigmaB and PrfA function in a coordinated transcriptional regulatory network in response to environmental conditions. Fine-tuning of virulence gene transcription appears to critically contribute to optimal intracellular survival of L. monocytogenes . The results presented here also showed that neither wild type PrfA nor PrfA* negatively affect gene transcription in L. monocytogenes, establishing an exclusive activator function for PrfA.
Download or read book Gram positive Pathogens written by Vincent A. Fischetti and published by . This book was released on 2000 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is the only single volume to deal with all aspects of gram–positive pathogens. It addresses the mechanisms of gram–positive bacterial pathogenicity, including the current knowledge on gram–positive structure and mechanisms of antibiotic resistance. Emphasizing streptococci, staphylococci, listeria, and spore–forming pathogens, Gram–Positive Pathogens includes chapters written by many of the leading researchers in these areas. The chapters systematically dissect these organisms biologically, genetically, and immunologically in an attempt to understand the strategies used by these bacteria to cause human disease.
Download or read book Foodborne Pathogens written by Joshua B. Gurtler and published by Springer. This book was released on 2017-06-14 with total page 653 pages. Available in PDF, EPUB and Kindle. Book excerpt: Foodborne illnesses continue to be a major public health concern. All members of a particular bacterial genera (e.g., Salmonella, Campylobacter) or species (e.g., Listeria monocytogenes, Cronobacter sakazakii) are often treated by public health and regulatory agencies as being equally pathogenic; however, this is not necessarily true and is an overly conservative approach to ensuring the safety of foods. Even within species, virulence factors vary to the point that some isolates may be highly virulent, whereas others may rarely, if ever, cause disease in humans. Hence, many food safety scientists have concluded that a more appropriate characterization of bacterial isolates for public health purposes could be by virotyping, i.e., typing food-associated bacteria on the basis of their virulence factors. The book is divided into two sections. Section I, “Foodborne Pathogens and Virulence Factors,” hones in on specific virulence factors of foodborne pathogens and the role they play in regulatory requirements, recalls, and foodborne illness. The oft-held paradigm that all pathogenic strains are equally virulent is untrue. Thus, we will examine variability in virulence between strains such as Listeria, Salmonella, Campylobacter, Cronobacter, etc. This section also examines known factors capable of inducing greater virulence in foodborne pathogens. Section II, “Foodborne Pathogens, Host Susceptibility, and Infectious Dose” , covers the ability of a pathogen to invade a human host based on numerous extraneous factors relative to the host and the environment. Some of these factors include host age, immune status, genetic makeup, infectious dose, food composition and probiotics. Readers of this book will come away with a better understanding of foodborne bacterial pathogen virulence factors and pathogenicity, and host factors that predict the severity of disease in humans.
Download or read book Game Changer Next Generation Sequencing and Its Impact on Food Microbiology written by Jennifer Ronholm and published by Frontiers Media SA. This book was released on 2018-04-26 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in next-generation sequencing technologies (NGS) are revolutionizing the field of food microbiology. Microbial whole genome sequencing (WGS) can provide identification, characterization, and subtyping of pathogens for epidemiological investigations at a level of precision previously not possible. This allows for connections and source attribution to be inferred between related isolates that may be overlooked by traditional techniques. The archiving and global sharing of genome sequences allow for retrospective analysis of virulence genes, antimicrobial resistance markers, mobile genetic elements and other novel genes. The advent of high-throughput 16S rRNA amplicon sequencing, in combination with the advantages offered by massively parallel second-generation sequencing for metagenomics, enable intensive studies on the microbiomes of food products and the impact of foods on the human microbiome. These studies may one day lead to the development of reliable culture-independent methods for food monitoring and surveillance. Similarly, RNA-seq has provided insights into the transcriptomes and hence the behaviour of bacterial pathogens in food, food processing environments, and in interaction with the host at a resolution previously not achieved through the use of microarrays and/or RT-PCR. The vast un-tapped potential applications of NGS along with its rapidly declining costs, give this technology the ability to contribute significantly to consumer protection, global trade facilitation, and increased food safety and security. Despite the rapid advances, challenges remain. How will NGS data be incorporated into our existing global food safety infrastructure? How will massive NGS data be stored and shared globally? What bioinformatics solutions will be used to analyse and optimise these large data sets? This Research Topic discusses recent advances in the field of food microbiology made possible through the use of NGS.
Download or read book Industrial and Host Associated Stress Responses in Food Microbes Implications for Food Technology and Food Safety written by Lorena Ruiz and published by Frontiers Media SA. This book was released on 2017-10-19 with total page 295 pages. Available in PDF, EPUB and Kindle. Book excerpt: Throughout the food processing chain and after ingestion by the host, food associated bacteria have to cope with a range of stress factors such as thermal and/or non-thermal inactivation treatments, refrigeration temperatures, freeze-drying, high osmolarity, acid pH in the stomach or presence of bile salts in the intestine, that threaten bacterial survival. The accompanying plethora of microbial response and adaptation phenomena elicited by these stresses has important implications for food technology and safety. Indeed, while resistance development of pathogenic and spoilage microorganisms may impose health risks for the consumer and impart great economic losses to food industries, reduced survival of probiotic bacteria may strongly compromise their claimed health benefit attributes. As a result, substantial research efforts have been devoted in the last decades to unravel the mechanisms underlying stress response and resistance development in food associated microorganisms in order to better predict and improve (i) the inactivation of foodborne pathogens and spoilage microorganisms on the one hand and (ii) the robustness and performance of beneficial microorganisms on the other. Moreover, the recent implementation of system-wide omics and (single-)cell biology approaches is greatly boosting our insights into the modes of action underlying microbial inactivation and survival. This Research Topic aims to provide an avenue for dissemination of recent advances within the field of microbial stress response and adaptation, with a particular focus not only on food spoilage and pathogenic microorganisms but also on beneficial microbes in foods.
Download or read book Molecular Food Microbiology written by Dongyou Liu and published by CRC Press. This book was released on 2021-04-11 with total page 525 pages. Available in PDF, EPUB and Kindle. Book excerpt: The elucidation of DNA double helix in 1953 and the publication of DNA cloning protocol in 1973 have put wings under the sail of molecular biology, which has since quietly revolutionized many fields of biological science, including food microbiology. Exploiting the power and versatility of molecular technologies, molecular food microbiology extends and greatly improves on phenotypically based food microbiology, leading to the development of better diagnostics for foodborne infections and intoxications, and contributing to the design of more effective therapeutics and prophylaxes against foodborne diseases. Forming part of the Food Microbiology series, Molecular Food Microbiology provides a state of art coverage on molecular techniques applicable to food microbiology. While the introductory chapter contains an overview on the principles of current DNA, RNA and protein techniques and discusses their utility in helping solve practical problems that food microbiology is facing now and in the future, the remaining chapters present detailed moleuclar analyses of selective foodborne viruses, bacteria, fungi and parasites. Key Features: Contains a state of art overview on moleuclar techniques applicable to food microbiology research and development Presents in-depth molecular analysis of selective foodborne viruses, bacteria, fungi and parasites Highlights the utility of molecular tecniques for accurate diagnosis and effective control of foodborne diseases Includes expert contributions from international scientists involved in molecular food microbiology research Represents a highly informative textbook for students majoring in food, medical, and veterinary microbiology Offers a contemporary reference for scholars and educators wishing to keep abreast with the latest developments in molecular food microbiology With contributions from international scientists involved in molecular food microbiology research, this book constitutes an informative textbook for undergraduates and postgraduates majoring in food, medical, and veterinary microbiology; represents an indispensable guide for food, medical, and veterinary scientists engaged in molecular food microbiology research and development; and offers a contemporary update for scholars and educators trying to keep in touch with the latest developments in molecular food microbiology.
Download or read book Stress Response in Pathogenic Bacteria written by Stephen P. Kidd and published by CABI. This book was released on 2011 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: The ability of pathogenic bacteria to adapt to various chemical, biochemical and physical conditions within the human host and their ability to respond to stresses generated in these environments is a central feature of infectious diseases and the outcome of bacterial infection. This book covers the key aspects of this rapidly developing field, including the generation of stresses by the host immune system, bacterial response to reactive chemicals, and adaptation to environmental conditions of anatomical niches such as the gut, mouth and urogenital tract. It also addresses the increasing importance of different metal ions in the pathogenesis and survival of specific bacteria. With chapters by active research experts in the field, the book provides a comprehensive outline of the current understanding of this field, the latest developments and where future research is likely to be directed.
Download or read book Actin based Motility written by Marie-France Carlier and published by Springer Science & Business Media. This book was released on 2010-09-23 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the discovery of actin by Straub in the 1950’s and the pioneering work of Oosawa on actin self-assembly in helical laments in the 1960’s, many books and conference proceedings have been published. As one of the most essential p- teins in life, essential for movement in organisms rangingfrom bacteria to higher eukaryotes, it is no surprise that actin has fascinated generations of scientists from many different elds. Actin can be considered as a “living treasure” of biology; the kinetics and thermodynamics of self-assembly, the dissipative nature of actin po- merization, the molecular interactions of monomeric and polymerized actin with regulators, the mechanical properties of actin gels, and more recently the force p- ducing motile and morphogenetic processes organized by the actin nanomachine in response to signaling, are all milestones in actin research. Discoveries that directly derive from and provide deeper insight into the fundamental properties of actin are constantly being made, making actin an ever appealing research molecule. At the same time, the explosion in new technologies and techniques in biological sciences has served to attract researchers from an expanding number of disciplines, to study actin. This book presents the latest developments of these new multiscale approaches of force and movement powered by self-assembly processes, with the hope to opening our perspectives on the many areas of actin-based motility research.
Download or read book Foodborne Bacterial Pathogens written by Michael Doyle and published by CRC Press. This book was released on 1989-02-24 with total page 818 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bacteria are estimated to cause some 24 million cases of diarrheal disease annually in the US. These papers have wide importance providing background information and recent research findings and giving a comprehensive, current understanding of bacterial pathogens associated with foods and their role
Download or read book Nutritional and Health Aspects of Food in Nordic Countries written by Veslemøy Andersen and published by Academic Press. This book was released on 2018-09-18 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nutritional and Health Aspects of Food in Nordic Countries provides an analysis of traditional and ethnic foods from the Nordic countries, including Norway (and Svalbard), Sweden, Finland, Iceland, and Denmark (including Greenland and the Faroe Islands). The book addresses the history of use, origin, composition and preparation, ingredient origin, nutritional aspects, and the effects on health for various foods and food products in each of these countries. In addition, readers will find local and international regulations and suggestions on how to harmonize regulations to promote global availability of these foods. Provides insight into the varieties of food and food products available in the Nordic countries Presents nutritional and health claims that are either based on opinion and/or experience, on scientific evidence, or on both Contains a framework to determine whether these northern European foods meet local and international regulatory requirements Offers strategies to remedy those foods that do not meet local and international regulatory requirements
Download or read book Advances in Applied Microbiology written by Geoffrey M. Gadd and published by Academic Press. This book was released on 2020-09-16 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Applied Microbiology, Volume 113, continues the comprehensive reach of this widely read and authoritative review source in microbiology. Users will find invaluable references and information on a variety of areas relating to the topic, with this release focusing on Gaps in the Assortment of Rapid Assays for Microorganisms of Interest to the Dairy Industry, Metal reduction and corrosion by bacterial biofilms, The microbiology of red brines, Clostridium thermocellum: a microbial platform for high-value chemical production from lignocellulose, and The zincophore system in pathogenic yeasts. Contains contributions from leading authorities in the field Informs and updates on all the latest developments in the field of microbiology Includes discussions on the role of specific molecules in pathogen life stages, interactions, and much more
Download or read book Virulence Mechanisms of Bacterial Pathogens written by Indira T. Kudva and published by John Wiley & Sons. This book was released on 2020-07-10 with total page 871 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ground-breaking overview of an enduring topic Despite the use of antibiotics, bacterial diseases continue to be a critical issue in public health, and bacterial pathogenesis remains a tantalizing problem for research microbiologists. This new edition of Virulence Mechanisms of Bacterial Pathogens broadly covers the knowledge base surrounding this topic and presents recently unraveled bacterial virulence strategies and cutting-edge therapies. A team of editors, led by USDA scientist Indira Kudva, compiled perspectives from experts to explain the wide variety of mechanisms through which bacterial pathogens cause disease: the host interface, host cell enslavement, and bacterial communication, secretion, defenses, and persistence. A collection of reviews on targeted therapies rounds out the seven sections of this unique book. The new edition provides insights into some of the most recent advances in the area of bacterial pathogenesis, including how metabolism shapes the host-pathogen interface interactions across species and genera mechanisms of the secretion systems evasion, survival, and persistence mechanisms new therapies targeting various adaptive and virulence mechanisms of bacterial pathogens Written to promote discussion, extrapolation, exploration, and multidimensional thinking, Virulence Mechanisms of Bacterial Pathogens serves as a textbook for graduate courses on bacterial pathogenesis and a resource for specialists in bacterial pathogenicity, such as molecular biologists, physician scientists, infectious disease clinicians, dental scientists, veterinarians, molecular biologists, industry researchers, and technicians.
Download or read book Listeria Listeriosis and Food Safety written by Elliot T. Ryser and published by CRC Press. This book was released on 2007-03-27 with total page 894 pages. Available in PDF, EPUB and Kindle. Book excerpt: Completely revised, the new edition of this bestseller incorporates recent findings to present readers with a complete and current overview of foodborne listeriosis, including information on listeriosis in animals and humans, pathogenesis, methods of detection, and subtyping. Two new chapters deal with risk assessment, cost of outbreaks, regulatory control in various countries, and future directions for research. The text covers many high-risk foods including fermented and unfermented dairy products, meat, poultry, fish, seafood, and products of plant origin. This authoritative resource has proven in to be a critical tool for those involved with preventing and curbing outbreaks of this dangerous pathogen.
Download or read book Risk Assessment of Listeria Monocytogenes in Ready to eat Foods written by World Health Organization and published by . This book was released on 2004 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cases of listeriosis appear to be predominantly associated with ready-to-eat products. FAO and WHO have undertaken a risk assessment of Listeria monocytogenes in ready-to-eat foods, prepared and reviewed by an international team of scientists. Input was received from several international fora including expert consultations and Codex Alimentarius committee meetings as well as via public and peer review. This interpretative summary provides an overview of how the risk assessment was undertaken and the results. In particular, it provides information relevant to risk managers addressing problems posed by this pathogen in ready-to-eat foods. It includes answers to the specific risk management questions posed by the Codex Committee on Food Hygiene and outlines the issues to be considered when implementing control measures, including the establishment of microbiological criteria.
Download or read book Nanomaterials for Food Applications written by and published by Elsevier. This book was released on 2018-11-16 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanomaterials for Food Applications highlights recent developments in nanotechnologies, covering the different food areas where these novel products or technologies can be applied. The book covers five major themes, showing how nanotechnology is used in food, the use of ingredients in nanoform to improve bioavailability or nanoencapsulation technologies, nanotechnologies for food processing, nanosensors for food quality and safety, nanotechnologies for food packaging, and methods to evaluate potential risks and regulatory issues. This is an important research reference that will be of great value to academic and industrial readers, as topics of importance, both at a research level and for commercial applications, are covered. Regulatory agencies will also be interested in the latest developments covered in the book as they will help set the foundation for further regulations. Demonstrates how nanotechnology can improve food quality and safety Shows how nanotechnology is used to create more effective food processing techniques Discusses the regulatory issues surrounding the use of nanomaterials in food to ensure they are used safely and responsibly
Download or read book Emerging foodborne pathogens written by Yasmine Motarjemi and published by CRC Press. This book was released on 2006-06-09 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt: Developments such as the increasing globalization of the food industry, constant innovations in technologies and products, and changes in the susceptibility of populations to disease have all highlighted the problem of emerging pathogens, either newly discovered through more sensitive analytical methods, linked for the first time to disease in humans, or newly associated with a particular food. Designed for microbiologists and quality assurance professionals and for government and academic food safety scientists, this timely reference discusses ways of identifying emerging pathogens and includes chapters on individual pathogens, their epidemiology, methods of detection, and means of control.
