Download or read book Colonic Motility written by Sushil K. Sarna and published by Biota Publishing. This book was released on 2010-11-01 with total page 159 pages. Available in PDF, EPUB and Kindle. Book excerpt: Three distinct types of contractions perform colonic motility functions. Rhythmic phasic contractions (RPCs) cause slow net distal propulsion with extensive mixing/turning over. Infrequently occurring giant migrating contractions (GMCs) produce mass movements. Tonic contractions aid RPCs in their motor function. The spatiotemporal patterns of these contractions differ markedly. The amplitude and distance of propagation of a GMC are several-fold larger than those of an RPC. The enteric neurons and smooth muscle cells are the core regulators of all three types of contractions. The regulation of contractions by these mechanisms is modifiable by extrinsic factors: CNS, autonomic neurons, hormones, inflammatory mediators, and stress mediators. Only the GMCs produce descending inhibition, which accommodates the large bolus being propelled without increasing muscle tone. The strong compression of the colon wall generates afferent signals that are below nociceptive threshold in healthy subjects. However, these signals become nociceptive; if the amplitudes of GMCs increase, afferent nerves become hypersensitive, or descending inhibition is impaired. The GMCs also provide the force for rapid propulsion of feces and descending inhibition to relax the internal anal sphincter during defecation. The dysregulation of GMCs is a major factor in colonic motility disorders: irritable bowel syndrome (IBS), inflammatory bowel disease (IBD), and diverticular disease (DD). Frequent mass movements by GMCs cause diarrhea in diarrhea predominant IBS, IBD, and DD, while a decrease in the frequency of GMCs causes constipation. The GMCs generate the afferent signals for intermittent short-lived episodes of abdominal cramping in these disorders. Epigenetic dysregulation due to adverse events in early life is one of the major factors in generating the symptoms of IBS in adulthood.

Download or read book Motor Function of the Pharynx Esophagus and Its Sphincters written by Ravinder Mittal and published by Morgan & Claypool Publishers. This book was released on 2011 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt: Deglutition or a swallow begins as a voluntary act in the oral cavity but proceeds autonomously in the pharynx and esophagus. Bilateral sequenced activation and inhibition of more than 25 pairs of muscles of mouth, pharynx, larynx, and esophagus is required during a swallow. A single swallow elicits peristalsis in the pharynx and esophagus along with relaxation of upper and lower esophageal sphincters. Multiple swallows, at closely spaced time intervals, demonstrate deglutitive inhibition; sphincters remain relaxed during the entire period, but only the last swallow elicits peristalsis. Laryngeal inlet closure or airway protection is very important during swallow. Upper part of the esophagus that includes upper esophageal sphincter is composed of skeletal muscles, middle esophagus is composed of a mixture of skeletal and smooth muscles, and lower esophagus, including lower esophageal sphincter, is composed of smooth muscles. Peristalsis progresses in seamless fashion, despite separate control mechanism, from the skeletal to smooth muscle esophagus. The esophagus's circular and longitudinal muscle layers contract synchronously during peristalsis. Sphincters maintain continuous tone; neuromuscular mechanisms for tonic closure in the upper and lower esophageal sphincters are different. Lower esophageal sphincter transient relaxation, belching mechanism, regurgitation, vomiting, and reflux are mediated via the brain stem. Table of Contents: Introduction / Central Program Generator and Brain Stem / Pharynx-Anatomy, Neural Innervation, and Motor Pattern / Upper Esophageal Sphincter / Neuromuscular Anatomy of Esophagus and Lower Esophageal Sphincter / Extrinsic Innervation: Parasympathetic and Sympathetic / Interstitial Cells of Cajal / Recording Techniques / Motor Patterns of the Esophagus-Aboral and Oral Transport / Deglutitive Inhibition and Muscle Refractoriness / Peristalsis in the Circular and Longitudinal Muscles of the Esophagus / Neural and Myogenic Mechanism of Peristalsis / Central Mechanism of Peristalsis-Cortical and Brain Stem Control / Peripheral Mechanisms of Peristalsis / Central Versus Peripheral Mechanism of Deglutitive Inhibition / Neural Control of Longitudinal Muscle Contraction / Modulation of Primary and Secondary Peristalsis / Neural Control of Lower Esophageal Sphincter and Crural Diaphragm / Lower Esophageal Sphincter / Swallow-Induced LES Relaxation / Crural Diaphragm Contribution to EGJ and Neural Control / Transient LES Relaxation and Pharmacological Inhibition / Compliance of the EGJ / References

Download or read book New Advances in Gastrointestinal Motility Research written by L. K. Cheng and published by Springer Science & Business Media. This book was released on 2013-06-01 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research into gastrointestinal motility has received renewed interest in part due to recent advances in the techniques for measuring the structure and function of gastrointestinal cells, tissue and organs. The integration of this wealth of data into biophysically based computation models can aid in interpretation of experimental and clinical measurements and the refinement of measurement techniques. The contents of this book span multiple scales - from cell, tissue, organ, to whole body and is divided into four broad sections covering: i) gastrointestinal cellular activity and tissue structure; (ii) techniques for measuring, analyzing and visualizing high-resolution extra-cellular recordings; (iii) methods for sensing gastroelectrical activity using non-invasive bio-electro-magnetic fields and for modulating the underlying gastric electrical activity and finally (iv) methods for assessing manometric and videographic motility patterns and the application of these data for predicting the flow and mixing behavior of luminal contents by using computational fluid dynamic techniques. This book aims to provide both an overview of historical and existing research techniques as well as to highlight future directions and challenges for the community as a whole. It will be suitable for clinicians to understand the cellular and biophysical underpinnings of gastric emptying, gastroenterologists, surgeons, bioengineers and all scientists with interests in gastrointestinal motility research.

Download or read book Colorectal Cancer Screening written by Joseph Anderson, MD and published by Springer Science & Business Media. This book was released on 2011-04-23 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: Colorectal Cancer Screening provides a complete overview of colorectal cancer screening, from epidemiology and molecular abnormalities, to the latest screening techniques such as stool DNA and FIT, Computerized Tomography (CT) Colonography, High Definition Colonoscopes and Narrow Band Imaging. As the text is devoted entirely to CRC screening, it features many facts, principles, guidelines and figures related to screening in an easy access format. This volume provides a complete guide to colorectal cancer screening which will be informative to the subspecialist as well as the primary care practitioner. It represents the only text that provides this up to date information about a subject that is continually changing. For the primary practitioner, information on the guidelines for screening as well as increasing patient participation is presentedd. For the subspecialist, information regarding the latest imaging techniques as well as flat adenomas and chromoendoscopy are covered. The section on the molecular changes in CRC will appeal to both groups. The text includes up to date information about colorectal screening that encompasses the entire spectrum of the topic and features photographs of polyps as well as diagrams of the morphology of polyps as well as photographs of CT colonography images. Algorithms are presented for all the suggested guidelines. Chapters are devoted to patient participation in screening and risk factors as well as new imaging technology. This useful volume explains the rationale behind screening for CRC. In addition, it covers the different screening options as well as the performance characteristics, when available in the literature, for each test. This volume will be used by the sub specialists who perform screening tests as well as primary care practitioners who refer patients to be screened for colorectal cancer.

Download or read book The Enteric Nervous System written by John Barton Furness and published by . This book was released on 1987 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Gastrointestinal Motility written by Satish S.C. Rao and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gastrointestinal motility has evolved from an esoteric laboratory tool into a sophisti cated diagnostic technique that is now widely used clinically to guide in management of complex gastrointestinal problems. Today, it is the most rapidly growing subspecialty within gastroenterology. Previously, many of the gastrointestinal motility problems were either ignored or attributed to a disturbance of "psyche." But with the growing knowledge and understanding of how a dysfunction of the gastrointestinal muscle and nerves can cause disease, we are at the threshold of a revolution in our approach to the diagnosis and treatment of gastrointestinal motility disorders. The purpose of this book is to serve as a useful, up-to-date reference manual and guide for the diagnostic and therapeutic approach towards common adult and pediatric gastrointestinal motility problems. In order to enhance the understanding of these disor ders, a problem-oriented approach has been chosen, and wherever possible the authors have provided clinical case scenarios to illustrate their message. The emphasis has been on how to diagnose and treat motility disorders rather than to provide an encyclopedic infor mation. The reference list at the end of each chapter should enable the enthusiast to seek further information. Some of the material presented in this book has been derived from the proceedings of the annual University ofIowa College of Medicine GI Motility Symposia.

Download or read book Enteric Glia written by Brian D. Gulbransen and published by Biota Publishing. This book was released on 2014-07-01 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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

Download or read book Psychogastroenterology for Adults written by Simon R. Knowles and published by Routledge. This book was released on 2019-09-16 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: The brain-gut connection has been increasingly implicated in biopsychosocial well-being. While there are numerous factors that directly and indirectly impact on how the gut and the brain interact, there is a growing awareness that gastrointestinal conditions need to be viewed and treated as part of a multidisciplinary approach. Psychogastroenterology for Adults: A Handbook for Mental Health Professionals is the first book to provide mental health professionals with an evidence-based, practical guide for working with patients living with gastrointestinal conditions. Timely and accessibly written, this book provides a unique, comprehensive introduction to psychogastroenterology, offering a step-by-step guide to evidence-based psychological treatment protocols. Broad in scope and expertise, the book is divided into four parts. It opens with an overview of the field, moving on to outline psychological concerns and conditions in gastroenterological (GI) cohorts. Further, it covers various approaches to psychogastroenterology, including psychopharmacological and eHealth practices. In closing, the book looks to the future, providing guidance on supervision in psychogastroenterology, and exploring challenges in the field. Written by experts in the field, this book will be an indispensable resource for those who wish to enhance their knowledge and practice of psychogastroenterology in the mental health profession, including psychologists, psychiatrists, psychosomatic medicine specialists, nurses and social workers.

Download or read book Gastrointestinal Diseases and Their Associated Infections written by Guy D. Eslick and published by Elsevier Health Sciences. This book was released on 2019-01-17 with total page 285 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many bacteria, viruses, protozoa, and fungi play key roles in the development of gastrointestinal diseases, and this practical reference brings you up to speed with this increasingly important area. Covering a broad range of GI diseases and cancers, this resource provides an expert overview of the field, ideal for all gastroenterologists and infectious disease physicians. - Covers infections associated with gastroesophageal reflux disease and Barrett's esophagus, gallbladder disease, acute pancreatitis, small intestinal bacterial overgrowth, irritable bowel syndrome, inflammatory bowel disease, appendicitis, Whipple Disease, Crohn's Disease, and more. - Discusses esophageal cancer, gastric cancer, cholangiocarcinoma, hepatocellular carcinoma, and colorectal cancer. - Includes chapters on gut microbiome, fecal transplants, and the molecular pathgenesis of gastrointestinal infections. - Consolidates today's available information on this timely topic into a single convenient resource.

Download or read book Schuster Atlas of Gastrointestinal Motility in Health and Disease written by Marvin Meier Schuster and published by PMPH-USA. This book was released on 2002 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt: The accompanying disc contains the complete text and illustrations of the book in fully searchable PDF files.

Download or read book The Esophagus written by Joel E. Richter and published by John Wiley & Sons. This book was released on 2021-07-13 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt: THE ESOPHAGUS The Esophagus investigates the anatomy, physiology, and pathology of the esophagus. This sixth edition, revised and updated throughout, also explores the diagnosis and treatment of various esophageal conditions. It includes treatment guidelines approved by the two largest gastroenterology societies, the ACG and AGA, as befits a work co-edited by two former presidents of those organizations. Advancements in diagnostics are presented, as are developments in the surgical and drug therapies. Presented in full colour, and boasting an unrivalled team of editors and contributing authors, The Esophagus Sixth Edition will find a home wherever the anatomy, physiology, and pathology of the esophagus are studied and taught. This book is accompanied by a website containing all the figures from the book in PowerPoint format. www.wiley.com/go/richter/esophagus6e Praise for the Fifth Edition: “There is absolutely no doubt that this edition of the textbook will maintain its status as the go-to reference for esophageal conditions, and will remain a highly utilized and clinically useful resource for novice and experienced physicians and surgeons alike.” (Gastroenterology, 1 July 2013)

Download or read book Pediatric Neurogastroenterology written by Christophe Faure and published by Springer. This book was released on 2016-11-25 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume provides a comprehensive and up-to-date theoretical review and practical guide on pediatric gastrointestinal motility and functional disorders. The latest edition includes extensively revised and new chapters to reflect the rapidly growing field of pediatric neurogastroenterology. New topics covered include neurobiology of pain in children, functional oropharyngoesophageal assessment, dysautonomia, and psychotropic drugs. The text also features instructive illustrations, photographs, and tables. Written by world-renown experts in the field, Pediatric Neurogastroenterology: Gastrointestinal Motility and Functional Disorders in Children, Second Edition is a valuable resource for pediatric gastroenterologists, adult gastroenterologists, pediatricians, and all professionals involved in the treatment and management of children with such disorders.

Download or read book The Enteric Nervous System written by Stuart Brierley and published by Springer. This book was released on 2016-07-05 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nearly 30 years ago, a number of scientists working on the Enteric Nervous System (ENS) gathered at Flinders University, in Adelaide, Australia to discuss the advances and future of their research. It was a friendly and stimulating meeting, attended by most of the major players, in what was to become the discipline of ‘Neurogastroenterology'. In 2014, the main Australasian Neuroscience Society meeting was held in Adelaide, Australia, providing the perfect opportunity to recreate a follow-up ENS meeting. As such, the ‘ENS II 2014 meeting’ aimed to identify how far the field of enteric neuroscience had developed, where the future was heading, and what technological advances had been made to address current and future unresolved questions. 30 speakers from around the world were invited to give talks and revisit the original expectations, the advances made since, and the future directions of ENS research. These discussions included three generations of investigators from 7 different countries. This publication represents the majority of proceedings from the ‘The Enteric Nervous System II 2014’ conference, which was held on February 1st - 2nd 2014 at the National Wine Centre of Australia, Adelaide. This meeting was an Official satellite meeting of the 34th Annual Meeting of Australasian Neuroscience Society, which was also held in Adelaide. The 20 contributions contained within this submission are from international researchers in the field of the ENS, who reviewed the advances made since the first meeting in the early 1980s and summarizes the present and future perspectives of neuro-gastroenterology. Some colleagues could not attend but did send greetings and their messages are included in these proceedings.

Download or read book The Gastrointestinal System written by Po Sing Leung and published by Springer Science & Business. This book was released on 2014-04-29 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gastrointestinal (GI) physiology is a fundamental subject that is indispensable not only for undergraduate but also for graduate courses. The audience include, but are not limited to, medical, pharmacy, nursing, human biology, Chinese medicine, and science students, as well as other health-related subject students. The overall objectives of this textbook are to present basic concepts and principles of GI physiology and, more importantly, to convey an understanding of how to apply this knowledge to abnormal GI physiology in the clinical context. As such, the basic knowledge of GI physiology and its application in the form of clinical case studies should be grasped, which are critical for professional examinations and bedside, as well as for general practice in the future. In this handbook, we aim to achieve these elements by covering the breadth of GI, pancreatic, hepatobiliary, and nutritional physiology. Moreover, we include relevant scenario-based clinical case in each chapter so as to evaluate whether the students can apply the basic GI they learn to the clinical setting.

Download or read book Gastrointestinal Motility Disorders written by Henry P. Parkman and published by W B Saunders Company. This book was released on 2007 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: This issue of Gastroenterology Clinics of North America is on Gastrointestinal Motility Disorders. GI motility disorders are common reasons for patients to see gastroenterologists. Knowledge of the pathophysiology, evaluation and treatment of these disorders is important to appropriately care for patients with gastrointestinal motility disorders in clinical practice. The chapters of this issue will discuss key aspects of gastrointestinal motility disorders focusing on how they relate to practicing gastroenterologists and other health care providers. Current knowledge in the area as well as evolving concepts from clinical investigations and translational research from basic sciences will be discussed. The rapid explosion of new technology used in the evaluation of patients will be covered.

Download or read book Current Catalog written by National Library of Medicine (U.S.) and published by . This book was released on with total page 1712 pages. Available in PDF, EPUB and Kindle. Book excerpt: First multi-year cumulation covers six years: 1965-70.

Download or read book Gastrointestinal Motility Disorders written by Eytan Bardan and published by Springer. This book was released on 2017-10-12 with total page 427 pages. Available in PDF, EPUB and Kindle. Book excerpt: This guide focuses on the answers to patient questions that are frequently posed to providers who care for patients with GI motility disorders. Additionally, the text guides clinicians through the complicated diagnostic and therapeutic/management approaches to motility disorders, including common and specialized tests, drug initiation, medications side effects, and disease complications. Written by experts in the field, Gastrointestinal Motility Disorders: A Point of Care Clinical Guide is a valuable reference for busy clinicians who need the best evidence-based answers to patient questions at their fingertips.