Download or read book Studies on the Expression and Regulation of Enterotoxins and Colonization Factors in Enterotoxigenic Escherichia Coli ETEC written by Matilda Nicklasson and published by . This book was released on 2008 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Escherichia coli written by James M. Fleckenstein and published by Elsevier Inc. Chapters. This book was released on 2013-06-12 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: The enterotoxigenic Escherichia coli (ETEC) constitute a diverse pathotype which shares the ability to secrete and effectively deliver heat-labile (LT) and/or heat-stable (ST) enterotoxins to host epithelial receptors. Respectively, these toxins stimulate production of cAMP and cGMP within host cells, and both of these cyclic nucleotides activate the cystic fibrosis transmembrane conductance regulator (CFTR) resulting in net efflux of salt and water into the intestinal lumen. Although discovered now more than 40 years ago, new ETEC virulence factors and critical features of the molecular pathogenesis of these organisms continue to emerge. Presently, there is no broadly protective vaccine for ETEC. However recent findings may inform novel approaches to vaccine development for these important pathogens.

Download or read book Colonization factors of enterotoxigenic Escherichia coli written by Harleen M. S. Grewal and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Binding Mechanism of Enterotoxigenic Escherichia Coli ETEC to Swine Intestinal Epithelia written by Tsung-Jung Lin and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Colibacillosis (diarrhea in piglets caused by Escherichia coli) is the leading killer to piglets. Pathogenic E.coli responsible for this onset is referred as diarrheagenic E.coli. In six defined groups of diarrheagenic E.coli, enterotoxigenic E. coli (ETEC) is an important cause of post weaning diarrhea (PWD) in pigs. ETEC was first recognized by their ability to secrete two defined groups of enterotoxins: heat-stable toxin (STs) and heat-labile enterotoxin (LTs). F4 and F18 fimbriae, the most prevalent adhesins are commonly expressed on porcine ETEC to facilitate bacterial colonization. In addition to enterotoxins and fimbrial adhesins, functions of many other colonization factors are constantly identified. In 2009, EtpA, an exoprotein, was identified in human ETEC and confirmed to interact with a conserved region of flagella. This interaction appears critical for ETEC adherence to human intestinal epithelia. Our current study demonstrated that EtpA gene was ...

Download or read book Advances in Escherichia coli Research and Treatment 2012 Edition written by and published by ScholarlyEditions. This book was released on 2012-12-26 with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Escherichia coli Research and Treatment / 2012 Edition is a ScholarlyPaper™ that delivers timely, authoritative, and intensively focused information about Escherichia coli in a compact format. The editors have built Advances in Escherichia coli Research and Treatment / 2012 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Escherichia coli in this eBook to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Advances in Escherichia coli Research and Treatment / 2012 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.

Download or read book Genetic Approaches to Microbial Pathogenicity written by W. Goebel and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Disease Control Priorities Third Edition Volume 2 written by Robert Black and published by World Bank Publications. This book was released on 2016-04-11 with total page 419 pages. Available in PDF, EPUB and Kindle. Book excerpt: The evaluation of reproductive, maternal, newborn, and child health (RMNCH) by the Disease Control Priorities, Third Edition (DCP3) focuses on maternal conditions, childhood illness, and malnutrition. Specifically, the chapters address acute illness and undernutrition in children, principally under age 5. It also covers maternal mortality, morbidity, stillbirth, and influences to pregnancy and pre-pregnancy. Volume 3 focuses on developments since the publication of DCP2 and will also include the transition to older childhood, in particular, the overlap and commonality with the child development volume. The DCP3 evaluation of these conditions produced three key findings: 1. There is significant difficulty in measuring the burden of key conditions such as unintended pregnancy, unsafe abortion, nonsexually transmitted infections, infertility, and violence against women. 2. Investments in the continuum of care can have significant returns for improved and equitable access, health, poverty, and health systems. 3. There is a large difference in how RMNCH conditions affect different income groups; investments in RMNCH can lessen the disparity in terms of both health and financial risk.

Download or read book The Impact of Food Bioactives on Health written by Kitty Verhoeckx and published by Springer. This book was released on 2015-04-29 with total page 341 pages. Available in PDF, EPUB and Kindle. Book excerpt: “Infogest” (Improving Health Properties of Food by Sharing our Knowledge on the Digestive Process) is an EU COST action/network in the domain of Food and Agriculture that will last for 4 years from April 4, 2011. Infogest aims at building an open international network of institutes undertaking multidisciplinary basic research on food digestion gathering scientists from different origins (food scientists, gut physiologists, nutritionists...). The network gathers 70 partners from academia, corresponding to a total of 29 countries. The three main scientific goals are: Identify the beneficial food components released in the gut during digestion; Support the effect of beneficial food components on human health; Promote harmonization of currently used digestion models Infogest meetings highlighted the need for a publication that would provide researchers with an insight into the advantages and disadvantages associated with the use of respective in vitro and ex vivo assays to evaluate the effects of foods and food bioactives on health. Such assays are particularly important in situations where a large number of foods/bioactives need to be screened rapidly and in a cost effective manner in order to ultimately identify lead foods/bioactives that can be the subject of in vivo assays. The book is an asset to researchers wishing to study the health benefits of their foods and food bioactives of interest and highlights which in vitro/ex vivo assays are of greatest relevance to their goals, what sort of outputs/data can be generated and, as noted above, highlight the strengths and weaknesses of the various assays. It is also an important resource for undergraduate students in the ‘food and health’ arena.

Download or read book Regulation of Gene Expression in Enteropathogenic Bacteria Volume II written by Dongsheng Zhou and published by Frontiers Media SA. This book was released on 2021-01-22 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt: Following the success of this Research Topic http://journal.frontiersin.org/ researchtopic/3298/regulation-of-gene-expression-in-enteropathogenic-bacteria, we are happy to launch a second edition of the project. Pathogenic bacteria have evolved numerous strategies to survive in and to attack hosts, which can be reflected by transcriptional and posttranscriptional changes in specific genes especially including those encoding virulence determinants. Regulation of gene expression by regulatory proteins and non-coding RNAs enables the pathogens to adapt their metabolic needs and to coordinately express virulence determinants during different stages of infection.

Download or read book Mucosal Vaccines written by Hiroshi Kiyono and published by Elsevier. This book was released on 1996-10-23 with total page 501 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive, authoritative treatise covers all aspects of mucosal vaccines including their development, mechanisms of action, molecular/cellular aspects, and practical applications. The contributing authors and editors of this one-of-a-kind book are very well known in their respective fields. Mucosal Vaccines is organized in a unique format in which basic, clinical, and practical aspects of the mucosal immune system for vaccine development are described and discussed. This project is endorsed by the Society for Mucosal Immunology. - Provides the latest views on mucosal vaccines - Applies basic principles to the development of new vaccines - Links basic, clinical, and practical aspects of mucosal vaccines to different infectious diseases - Unique and user-friendly organization

Download or read book Microbiology of Waterborne Diseases written by and published by Academic Press. This book was released on 2013-11-08 with total page 719 pages. Available in PDF, EPUB and Kindle. Book excerpt: The second edition of Microbiology of Waterborne Diseases describes the diseases associated with water, their causative agents and the ways in which they gain access to water systems. The book is divided into sections covering bacteria, protozoa, and viruses. Other sections detail methods for detecting and identifying waterborne microorganisms, and the ways in which they are removed from water, including chlorine, ozone, and ultraviolet disinfection. The second edition of this handbook has been updated with information on biofilms and antimicrobial resistance. The impact of global warming and climate change phenomena on waterborne illnesses are also discussed. This book serves as an indispensable reference for public health microbiologists, water utility scientists, research water pollution microbiologists environmental health officers, consultants in communicable disease control and microbial water pollution students. Focuses on the microorganisms of most significance to public health, including E. coli, cryptosporidium, and enterovirus Highlights the basic microbiology, clinical features, survival in the environment, and gives a risk assessment for each pathogen Contains new material on antimicrobial resistance and biofilms Covers drinking water and both marine and freshwater recreational bathing waters

Download or read book Vaccines written by Stanley A. Plotkin and published by Elsevier Health Sciences. This book was released on 2008-02-11 with total page 1748 pages. Available in PDF, EPUB and Kindle. Book excerpt: Completely revised and updated, this respected reference offers comprehensive and current coverage of every aspect of vaccination-from development to use in reducing disease. It provides authoritative information on vaccine production, available preparations, efficacy, and safety...recommendations for vaccine use, with rationales...data on the impact of vaccination programs on morbidity and mortality...and more. And now, as an Expert Consult title, it includes a companion web site offering this unparalleled guidance where and when you need it most! Provides a complete understanding of each disease, including clinical characteristics, microbiology, pathogenesis, diagnosis, and treatment, as well an epidemiology and public health issues. Offers comprehensive coverage of both existing vaccines and vaccines currently in the research and development stage. Examines vaccine stability, immunogenicity, efficacy, duration of immunity, adverse events, indications, contraindications, precautions, administration with other vaccines, and disease control strategies. Analyses the cost-benefit and cost-effectiveness of vaccines. Discusses the proper use of immune globulins and antitoxins. Illustrates concepts and objective data with approximately 600 tables and figures. Includes access to a companion web site offering the complete contents of the book - fully searchable - for rapid consultation from anyplace with an Internet connection.

Download or read book Colonization Factors of Enterotoxigenic Escherichia Coli written by Gloria Viboud and published by . This book was released on 1995 with total page 69 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Transcriptional Regulation of Virulence Genes in Enterotoxigenic Escherichia Coli and Shigella Flexneri by Members of the Arac xyls Family written by Maria Carolina Pilonieta and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Pathogenesis of enterotoxigenic Escherichia coli (ETEC) and Shigella flexneri relies predominantly on members of the AraC/XylS family of transcriptional regulators, Rns (or its homolog, CfaD) and MxiE, respectively. Rns/CfaD regulate the expression of pili, which allow the bacteria to attach to the intestinal epithelium. Better understanding of the role Rns plays in virulence was attained by expanding our knowledge of the Rns regulon, revealing that it functions as an activator of cexE, a previously uncharacterized gene. By in vitro DNase I footprinting two Rns-binding sites were identified upstream of cexEp, both of which are required for full activation of cexE. The amino terminus of CexE also contains a secretory signal peptide that is removed during translocation to the periplasm. Though the function of CexE remains unknown, these studies suggest that CexE is a novel ETEC virulence factor since it is regulated by Rns/CfaD. In Shigella flexneri, the expression of a subset of virulence genes (including, ipaH9.8 and ospE2) is dependent upon the activator MxiE and a cytoplasmic chaperone IpgC. To define the molecular mechanism of transcriptional activation by this chaperone-activator pair, an in vitro pull down assay was performed revealing that MxiE specifically interacts with IpgC in a complex. Additionally, IpgC recognizes three polypeptide regions in MxiE: within MxiE(1-46), MxiE(46-110) and MxiE(196-216). Furthermore, it seems that MxiE and IpgC regulate transcription of ipaH9.8 and ospE2 promoters differently. In the bacterium, the formation of the MxiE-IpgC complex is initially prevented because IpgC is sequestered in individual complexes with effector proteins, IpaB and IpaC. Upon contact with an eukaryotic host cell the effector proteins are secreted, thereby freeing IpgC to form a complex with MxiE and activate the expression of virulence genes. This new characterization of the role of Rns and MxiE in virulence gene regulation in ETEC and S. flexneri, respectively will give new insights into the pathogenesis of the regulators.

Download or read book Fimbriae Adhesion Genetics Biogenesis and Vaccines written by Per Klemm and published by CRC Press. This book was released on 1994-07-12 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fimbriae are the best-studied bacterial colonization factors. They are of paramount importance in bacterial pathogenesis and microbial ecology. Due to the advent of new and powerful techniques, an impressive amount of information has been accumulated on these important surface organelles over the last decade. The first book of its kind, Fimbriae brings together into one volume the state of the art of this very active field. Internationally recognized researchers give both a horizontal and lateral approach to fimbriology. Selected types of fimbriae are extensively reviewed and fundamental questions such as evolution, control or regulation, biogenesis, bacteria-host interaction, and fimbriae-based vaccines are examined.

Download or read book Food Safety in the 21st Century written by Puja Dudeja and published by Academic Press. This book was released on 2016-09-28 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt: Food Safety in the 21st Century: Public Health Perspective is an important reference for anyone currently working in the food industry or those entering the industry. It provides realistic, practical, and very usable information about key aspects of food safety, while also systematically approaching the matter of foodborne illness by addressing the intricacies of both prevention and control. This book discusses ways to assess risk and to employ epidemiological methods to improve food safety. In addition, it also describes the regulatory context that shapes food safety activities at the local, national, and international levels and looks forward to the future of food safety. - Provides the latest research and developments in the field of food safety - Incorporates practical, real-life examples for risk reduction - Includes specific aspects of food safety and the risks associated with each sector of the food chain, from food production, to food processing and serving - Describes various ways in which epidemiologic principles are applied to meet the challenges of maintaining a safe food supply in India and how to reduce disease outbreaks - Presents practical examples of foodborne disease incidents and their root causes to highlight pitfalls in food safety management

Download or read book Microbial Toxins written by P. Gopalakrishnakone and published by Springer. This book was released on 2018-03-14 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, the field of Toxinology has expanded substantially. On the one hand it studies venomous animals, plants and micro organisms in detail to understand their mode of action on targets. While on the other, it explores the biochemical composition, genomics and proteomics of toxins and venoms to understand their three interaction with life forms (especially humans), development of antidotes and exploring their pharmacological potential. Therefore, Toxinology has deep linkages with biochemistry, molecular biology, anatomy and pharmacology. In addition, there is a fast developing applied subfield, clinical toxinology, which deals with understanding and managing medical effects of toxins on human body. Given the huge impact of toxin-based deaths globally, and the potential of venom in generation of drugs for so-far incurable diseases (for example, Diabetes, Chronic Pain), the continued research and growth of the field is imminent. This has led to the growth of research in the area and the consequent scholarly output by way of publications in journals and books. Despite this ever growing body of literature within biomedical sciences, there is still no all-inclusive reference work available that collects all of the important biochemical, biomedical and clinical insights relating to Toxinology. The Handbook of Toxinology aims to address this gap and cover the field of Toxinology comprehensively.