The Effects Of Immune Cells And Inflammation On Smooth Muscle And Enteric Nerves
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The Effects Of Immune Cells And Inflammation On Smooth Muscle And Enteric Nerves
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Author : Jr. Snape
language : en
Publisher: CRC Press
Release Date : 2020-02-05
The Effects Of Immune Cells And Inflammation On Smooth Muscle And Enteric Nerves written by Jr. Snape and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-02-05 with Medical categories.
This book provides the first comprehensive review of research that addresses the immunomodulation of gastrointestinal motility. Results from this new field of research are important for understanding motility disturbances and symptom-generation in a variety of clinical gastroenterological problems, including ulcerative colitis, Crohn's disease, enteric infections, and food allergies. The book provides overviews on current perspectives regarding the nature of inflammatory processes, inflammatory mediators, and other immune factors. It also describes a variety of experimental approaches that have been used to study the interactions between immune cells and smooth muscle or enteric nerves. The approaches include in vivo, as well as in vitro studies. Researchers involved in the general field of immunophysiology, as well as the more specific fields of gastrointestinal motility and inflammatory bowel diseases will find this book to be invaluable in their research.
Paradoxical Effects Of Immune Cells On The Enteric Nervous System In Intestinal Inflammation
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Author :
language : en
Publisher:
Release Date : 2009
Paradoxical Effects Of Immune Cells On The Enteric Nervous System In Intestinal Inflammation written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with categories.
Inflammatory bowel disease causes structural and functional alterations in the enteric nervous system (ENS). Since the onset of intestinal inflammation involves the activation of resident immune cells as well as rapid influx of infiltrating cells, we proposed that changes in the ENS are a result of the release of toxic inflammatory factors. We hypothesized that early damage to the ENS in inflammation is caused by harmful levels of nitric oxide (NO) generated by the enzyme inducible nitric oxide synthase (iNOS) found in immune cells. This was assessed in the 2, 4, 6-trinitrobenzene sulfonic acid (TNBS)-model of colitis in rats. Large increases in infiltrating granulocytes, particularly neutrophils and blood-derived monocytes were found in the muscularis layers adjacent to the ENS. A rapid increase in iNOS immunoreactivity in the muscularis regions during early stages of inflammation (6 - 24 hr) was observed. Whether high NO levels generated by chemical donors could be toxic to neurons was tested in a co-culture model of myenteric neurons, smooth muscle and glia enzymatically isolated from neonatal rats. Exposure of co-cultures to NO for 48 hr resulted in significant, concentration dependent decrease in neuron survival. We then developed a model that permitted the direct study of immune cell interactions with myenteric neurons. Myenteric neurons were co-cultured with activated peritoneal immune cells that expressed iNOS and generated high NO levels (49 + 6.2æM) for 48 hr. This caused significant neuronal death, reducing neuron number by 19 + 5%, and disruption of axons. Pre-treatment of immune cells with a selective iNOS-inhibitor, L-NIL resulted in neuron numbers that were not significantly different from control (96 + 2%) suggesting that NO played a central role in mediating the damaging effects of immune cells. Lastly, when direct contact between immune cells and neurons was prevented in the previous experiment through use of trans-wells, unanticipated neurotrophic.
Enteric Glia
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Author : Brian D. Gulbransen
language : en
Publisher: Biota Publishing
Release Date : 2014-07-01
Enteric Glia written by Brian D. Gulbransen and has been published by Biota Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-07-01 with Medical categories.
The enteric nervous system (ENS) is a complex neural network embedded in the gut wall that orchestrates the reflex behaviors of the intestine. The ENS is often referred to as the “little brain” in the gut because the ENS is more similar in size, complexity and autonomy to the central nervous system (CNS) than other components of the autonomic nervous system. Like the brain, the ENS is composed of neurons that are surrounded by glial cells. Enteric glia are a unique type of peripheral glia that are similar to astrocytes of the CNS. Yet enteric glial cells also differ from astrocytes in many important ways. The roles of enteric glial cell populations in the gut are beginning to come to light and recent evidence implicates enteric glia in almost every aspect of gastrointestinal physiology and pathophysiology. However, elucidating the exact mechanisms by which enteric glia influence gastrointestinal physiology and identifying how those roles are altered during gastrointestinal pathophysiology remain areas of intense research. The purpose of this e-book is to provide an introduction to enteric glial cells and to act as a resource for ongoing studies on this fascinating population of glia. Table of Contents: Introduction / A Historical Perspective on Enteric Glia / Enteric Glia: The Astroglia of the Gut / Molecular Composition of Enteric Glia / Development of Enteric Glia / Functional Roles of Enteric Glia / Enteric Glia and Disease Processes in the Gut / Concluding Remarks / References / Author Biography
The Enteric Nervous System
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Author : John Barton Furness
language : en
Publisher:
Release Date : 1987
The Enteric Nervous System written by John Barton Furness and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Medical categories.
Immunopharmacology Of The Gastrointestinal System
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Author : John L. Wallace
language : en
Publisher: Academic Press
Release Date : 1993-03-01
Immunopharmacology Of The Gastrointestinal System written by John L. Wallace and has been published by Academic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993-03-01 with Medical categories.
Diseases of the digestive system have a higher morbidity rate than any other group of disorder. There is a growing body of evidence that the immune system participates in the pathogenesis of a wide range of these diseases, including peptic ulcer disease and the gastropathy induced by nonsteroidal anti-inflammatory drugs (NSAIDS). For these reasons, efforts to develop novel therapies for digestive diseases are increasingly focused on the immune system. This volume reviews the immunopharmacology of the gastrointestinal tract at four distinct levels: Immunomodulation at a cellular level Cellular targers for immunomodulating drugs Specific classes of inflammatory mediators Utility and mechanisms of action of glucocorticoids in the treatment of diseases of the gastrointestinal tract.
Inflammatory Bowel Disease
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Author : L.R. Sutherland
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Inflammatory Bowel Disease written by L.R. Sutherland and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Medical categories.
The inflammatory bowel diseases, of unknown etiology and for which there are no cures, continue to attract the attention and interest of gastroenterologists, internists and surgeons. International symposia are common and it is safe to say that there is at least one major symposium held somewhere in the world each year. This book encompasses the proceedings of two recent symposia held in Victoria, British Columbia, Canada. The symposia were the fifth and sixth international meetings focused on inflammatory bowel disease in Canada in the last eight years. Once again they were sponsored by Axcan Pharma, Inc. (formerly Interfalk Canada, Inc.) and endorsed by the Canadian Association of Gastroenterology. As has become traditional at such meetings the faculty was drawn from an international roster ofleaders in the field of inflammatory bowel disease and gastroenterology. The chapters of the proceedings provide a timely, up-to-date review of the major issues, including those within the realm of basic science and others dealing with clinical problems. The first symposium, 'Basic Research and Clinical Implications', was co-ordinated by John Wallace in association with Stephen Collins and Stephan Targan. The themes of this section were organized under the general topics of predisposing factors (genetics, animal models, infection, permeability, and immune deficits) and the pathophysiology of intestinal inflammation. The second symposium, Trends in Therapy' was organized by Lloyd Sutherland along with Franc;:ois Martin, Robin McLeod and Noel Williams.
Neural Control Of Gastrointestinal Function
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Author : David Grundy
language : en
Publisher: Morgan & Claypool Publishers
Release Date : 2011-12
Neural Control Of Gastrointestinal Function written by David Grundy and has been published by Morgan & Claypool Publishers this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-12 with Science categories.
The gastrointestinal tract is a long, muscular tube responsible for the digestion of food, assimilation of nutrients and elimination of waste. This is achieved by secretion of digestive enzymes and absorption from the intestinal lumen, with different regions playing specific roles in the processing of specific nutrients. These regions come into play sequentially as ingested material is moved along the length of the GI tract by contractions of the muscle layers. In some regions like the oesophagus transit it rapid and measured in seconds while in others like the colon transit is measured in hours and even days, commensurate with the relative slow fermentation that takes place in the large bowel. An hierarchy of controls, neural and endocrine, serve to regulate the various cellular targets that exist in the gut wall. These include muscle cells for contraction and epithelial cells for secretion and absorption. However, there are complex interactions between these digestive mechanisms and other mechanisms that regulate blood flow, immune function, endocrine secretion and food intake. These ensure a fine balance between the ostensibly conflicting tasks of digestion and absorption and protection from potentially harmful ingested materials. They match assimilation of nutrients with hunger and satiety and they ensure that regions of the GI tract that are meters apart work together in a coordinated fashion to match these diverse functions to the digestive needs of the individual. This ebook will provide an overview of the neural mechanisms that control gastrointestinal function. Table of Contents: Neural Control of Gastrointestinal Function / Cells and Tissues / Enteric Nervous System / From Gut to CNS: Extrinsic Sensory Innervation / Sympathetic Innervation of the Gut / Parasympathetic Innervation of the Gut / Integration of Function / References
Innervation Of The Gut
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Author : Yvette Tache
language : en
Publisher: CRC Press
Release Date : 1993-12-02
Innervation Of The Gut written by Yvette Tache and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993-12-02 with Science categories.
Innervation of the Gut provides a stimulating discussion of gut innervations based on exciting developments generated by advanced neuroanatomical and electrophysiological approaches. All components of the nervous system are covered, including central, spinal, autonomic, and enteric systems. This information is relative to secretory, motor, and immune regulatory functions of the gut, as well as visceral sensation. Brain transmitters involved in mediating stress-induced alterations of gastrointestinal motor function and the central regulation of vagal outflow to the gut are discussed in detail. The book will stimulate basic scientists and gastroenterologists to expand research efforts that may enable them to unravel the mechanisms of brain-gut interactions under physiological and pathological conditions. Students, psychologists, and psychiatrists will find Innervation of the Gut an essential reference for their studies.
Psychological Aspects Of Inflammatory Bowel Disease
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Author : Simon R. Knowles
language : en
Publisher: Routledge
Release Date : 2014-09-19
Psychological Aspects Of Inflammatory Bowel Disease written by Simon R. Knowles and has been published by Routledge this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-09-19 with Psychology categories.
In the Western world around 360 in every 100,000 individuals have inflammatory bowel disease (IBD), a relapsing-remitting autoimmune disease that affects the gastrointestinal tract. Its impact on individual functioning across physical and psychosocial domains is significant and psychological distress is a common feature, with research suggesting that active IBD is associated with one of the highest rates of depression and anxiety of all chronic illnesses. Despite the high prevalence of mental health co-morbidities in IBD, psychological illness remains largely undertreated, with studies showing that 60% of IBD patients experiencing mental health problems do not receive adequate help. In this book, Knowles and Mikocka-Walus bring together world experts who practice integrated and holistic approach in their care for IBD patients, to provide an overview of research across a range of topics associated with the biopsychosocial treatment of IBD. Each chapter provides an up-to-date comprehensive consolidation and evaluation of the current literature alongside recommendations for practice. Key themes include: current understanding of the interrelationship of the neurological and biological aspects of IBD common concerns and issues individuals with IBD face exploring challenges across individual life-stages current evidence for psychosocial interventions recommendations for future directions of biopsychosocial work. Psychological Aspects of Inflammatory Bowel Disease: A biopsychosocial approach is a key resource for researchers, practitioners and academics considering psychosocial aspects of the disease and psychological interventions. It will also appeal to health psychologists and mental health practitioners working with clients with IBD, as well as gastroenterologists interested in a comprehensive and holistic approach to IBD management.
Understanding Crohn S Disease Immunity Genes And Microbes
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Author : Amélia Sarmento
language : en
Publisher: Frontiers Media SA
Release Date : 2017-08-11
Understanding Crohn S Disease Immunity Genes And Microbes written by Amélia Sarmento and has been published by Frontiers Media SA this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-08-11 with Electronic book categories.
Crohn's disease (CD) is a chronic, relapsing, inflammatory bowel disease resulting in considerable morbidity and reduced quality of life. Although still under intense debate, CD seems to result from an enhanced and uncontrolled immune response to the gut microbiota. CD is thought to be multifactorial depending on genetic and environmental determinants. In recent years, nearly 100 single nucleotide polymorphisms (SNPs) were associated with increased risk of developing CD (some of the SNPs also associated with susceptibility to ulcerative colitis, another type of IBD). These SNPs are mostly located in genes involved in innate and adaptive immunity mechanisms, such as autophagy, expression of pattern-recognition receptors and citokine signaling. Epigenetics is also probably playing a role in CD susceptibility, as it is sensitive to environmental conditions and may mediate gene-environment interactions. Environmental factors possibly involved in CD development include diet, gut microbiota composition and infection with specific pathogens, of which the most consistently associated to CD are Mycobacterium avium subsp. paratuberculosis and adherent-invasive Escherichia coli. This Topic aimed at bringing together contributions covering different genetic, epigenetic, immunological and microbial processes involved in the development of CD, helping to drive forward the understanding of CD immunopahtology.