There are many separate groups working in gut biology, and they feel that the gut is an excellent model for investigating general problems in differentiation, growth control, stem cell biology, and regeneration and adaptive responses. There is a pressing need to define the objectives of the next 5 to 10 years, and the meeting, Part III of the Gastroenterology Symposia Freiburg 1996 (Falk Symposium No. 94), held in Freiburg, Germany, October 25-26, brought together some of these groups with a view to identifying areas which are not being utilized and need to be exploited, such as transgenic and knockout approaches, retrovirus delivery systems, and model cell/tissue systems. The main themes of the book are gastrointestinal development and differentiation, gut stem cell biology, and the control of gut growth in normal and abnormal situations. Basic research findings are related to clinical situations, and the book will appeal not only to gut cell and molecular biologists, but also to gastroenterologists interested in the potential applications of these subject areas.

The proposal for this book is to offer a systematic description of the most frequent complications occurring in the three parts of the digestive tract: HPB, Upper GI and colorectal tracts. Every complication, from esophageal to the rectum, is described systematically through two or three practical cases as has been treated by actual surgical practices of authors serving as surgeon practitioners. Description of the case, presentation of indication for surgery, type of primary surgical intervention and complication is described textually but also and by means of clinical signs, laboratory tests, radiological studies (CT scans and schematic drawings) and other methods used for diagnosis and treatment. The reader will have access to a practical book in which every current complication can be easily recognized, along with relevant information as guide for an adequate treatment.

This volume provides a history of Eosinophilic Esophagitis (EoE), a basic understanding of the physiology of the eosinophil, and a current understanding of the pathophysiology and genetics of EoE. The emphasis is on clinical applications including presenting symptoms, diagnosis and treatment options for patients with EoE. Written by both pediatric and adult experts in the fields of gastroenterology, allergy and pathology, this volume includes the most up to date information. Providing practical information useful in the treatment of patients, this book will be of great value to gastroenterologists, allergists, pathologists, medical residents, fellows, internists, and general practitioners who treat patients with eosinophilic esophagitis.

Biomechanics of the Gastrointestinal Tract is an up-to-date book for researchers on the study of the mechanical properties and the motor system of the gastrointestinal tract. A well-illustrated book, it provides a comprehensive overview to relevant tissue geometry, morphology and biomechanical theory. Separate chapters cover smooth muscle and nerve function including the application to animal and human studies of motility, symptoms and pain, determination of the true resting state, history-dependent properties, and tissue remodelling in disease. Several methods and diagnostic applications such as determination of in vivo length-tension diagrams and multimodal pain testing are completely new but will undoubtedly be used by many in the future. New non-invasive imaging techniques based on ultrasound, MR- and CT-scanning in combination with balloon distension are emerging as the techniques for future in vivo studies.

Now that Helicobacter pylori is generally accepted as a key aetiological agent in gastric cancer as well as the main agent in peptic ulcer, it can claim to be the most important new discovery in clinical gastroenterology of the last decade, and yet there is no up-to-date book available on the subject that is designed primarily for the clinical gastroenterologist. This book aims to fill that niche. It should also be of interest to the basic scientist, to those providing a clinical laboratory service (microbiologists and histopathologists), and to epidemiologists and others involved in clinical research.

First published in 1987. Routledge is an imprint of Taylor & Francis, an informa company.

IS CROHN'S DISEASE A MYCOBACTERIAL DISEASE'! The fact that the differential diagnosis of inflammatory bowel disease includes intestinal infections has been a source of much interest and clinical concern for many years. Since the recognition of ulcerative colitis and Crohn's disease as clinical entities, numerous attempts have been made to identify a specific organism resulting in the clinical and pathologic picture of Inflammatory Bowel Disease. The first suggestion about a connection between Johne's disease, a chronic mycobacterial enteritis in cattle, and Crohn' s disease occurred in 1913, when Dalziel described enteritis in humans which, although resembling intestinal tuberculosis, he believed to be a new disorder. Since the work of Crohn in the thirties a few investigators attempted to look for mycobacteria in Crohn's disease. Until now the work of Van Patter, Burnham and others did not receive widespread recognition. In 1984 the isolation of M. paratuberculosis was reported by Chiodini et al. This report initiated the current interest and controversy about a mycobacterial etiology in Crohn's disease. The hypothesis "Crohn's disease is Johne's disease" did not receive widespread recognition, but has lead to the first muIticentered efforts to determine whether or not mycobacteria are associated with Crohn's disease.

This book focusses on the latest results related to the field of bile acids as signaling molecules and describes how these receptors have become a major pharmacological target. It covers all major areas of research in this field, from genetics, chemistry, in silico modeling, molecular biology to clinical applications, offering a cross-country view of the functional role of bile acids as signaling molecules, virtually acting on all major areas of metabolism. While FXR and GPBAR1 are essential bile acid sensors that integrate the de novo bile acid synthesis with intestinal microbiota and liver metabolism, in a broader sense, BARs play a pathogenic role in the development of common human alignments including liver, intestinal and metabolic disorders, such as steatosis (NAFLD) and steato-hepatitis (NASH), diabetes, obesity and atherosclerosis.

Despite significant progress in modern gastroenterology, the aetiology of inflammatory bowel disease as well as coeliac disease is still to a great extent unknown and poorly understood. The principles of treatment - particularly of IBD - emphasize the importance of a combined medical and surgical approach. This book is the proceedings of an international symposium that brought together workers from many disciplines involved in the treatment of IBD and coeliac disease, and is a useful update on recent advances in paediatric and paediatric-surgical gastroenterology. F. Hadziselimovic, B. Herzog, A. Biirgin-Wolff vii List of Principal Contributors M. BUROELSKI F. HAOZISELIMOVIC Kinderklinik Department of Gastroenterology Medizinische Hochschule Hannover Basler Kinderspital Postfach 61 01 80 Rbmergasse 8 CH-4005 Basel 0-3000 Hannover 61 Switzerland FRG H. K. HARMS A. BURGIN-WOLFF Dr. V. Hauner'sches Kinderspital Basler Kinderspital Lindwurmstrasse 4 Rbmergasse 8 0-8000 Munich 2 CH-4005 Basel FRG Switzerland A. H. CO LOONY W. T. J. HEKKENS Department of Physiology Harvard Medical School Faculty of Medicine Division of Urology The Children's Hospital University of Leiden 300 Longwood Avenue Wassenaarseweg 62 Boston, MA 02115 PO Box 9604 NL-2300 RC Leiden USA The Netherlands C. P. FLIEGEL Department of Radiology B. HERZOG Basler Kinderspital Pediatric Surgery Rbmergasse 8 Basler Kinderspital CH-4005 Basel Rbmergasse 8 Switzerland CH-4005 Basel Switzerland J. -O. GEBBERS Institute of Pathology B. S. KIRSCHNER Kantonsspital Wyler Children's Hospital CH-6000 Luzern 16 5825 S. Maryland Avenue Switzerland Chicago, IL 60637 USA A. M. GRIFFITHS Division of Gastroenterology M. L.

Modern Management of Cancer of the Rectum is intended to provide a comprehensive overview of all aspects of rectal neoplasms. It addresses epidemiology, biology, screening and chemoprevention, the role of imaging in diagnosis, staging and prognosis, radiation therapy, medical and surgical treatment, as well as new modalities of therapy, including laparoscopy, and transanal endoscopic surgery. A greater understanding of prognostic factors, patterns of spread and natural history has occurred during the past decade; together with new diagnostic modalities this has led to significant changes in the management of patients with rectal cancer. This book will be invaluable for all those who treat rectal cancer.

It is easy to make anecdotal claims for the efficacy of new forms of treatment based on the short term results in a small number of patients. Many authors have done this for endoscopic laser therapy in the gastrointestinal tract. It is very much more difficult to carry out a comprehensive assessment of the short and long term effects of new techniques and to compare these with the results of alternative treatments for the same diseases. This book, from one of the world's leading departments of gastroenterology, describes and analyses the largest series of patients yet reported from one centre treated endoscopically with the NdYAG laser for gastrointestinal disease. The follow up extends over 8 years and the results are impressive. Some of the early claims for laser therapy have been validated, others have not, but the real value of the book is that we now have a large amount of well organised data on which to judge the merits of laser therapy. Medical laser techniques are in their infancy and the potential for future develop ment is enormous, but ideas on current applications have been consolidated and that is essential before the next concepts evolve. This book has taught us how to walk. The world is now ready to learn to run! S. G. Bown, Director National Medical Laser Centre London Contents INTRODUCTION 3 Introduction and purpose of the study 5 1 General aspects of laser 6 1. 1.

The Clinician's Guide to Swallowing Fluoroscopy is a comprehensive resource for all dysphagia clinicians. This beautifully-illustrated text is intended for SLP, ENT, radiology, GI, and rehabilitation specialists interested in swallowing and addresses the need for an up-to-date, all-inclusive reference. Topics covered include radiation safety and protection, fluoroscopic oral, pharygeal, and esophageal phase protocols and abnormalities, and objective measures of timing and displacement.

Toby K. Eisenstein Symposium Committee Chairperson Temple University School of Medicine Philadelphia, Pennsylvania 19140 This symposium is the thirteenth biennial clinical microbiology program sponsored by the Eastern Pennsylvania Branch of the American Society for Microbiology in cooperation with the Philadelphia area medical schools and the Bureau of Laboratories of the Pennsylvania Department of Health. This year a generous contribution from Merck, Sharp and Dohme has helped to make the program a reality. The subject matter for this symposium represents an attractive spectrum of medical, biological and molecular approaches to the practical solution of a public health prob1em--name1y, prevention of infection with the hepatitis B virus. The symposium may be unique in that it focuses on a product which was first marketed less than three months ago, but included in the program are presen tations on two new approaches to hepatitis B vaccine production which may replace the one which is newly unveiled. The rapidity of progress in our present era of biological research is indeed astonishing."

This book provides a comprehensive analysis of the value of contrast-enhanced ultrasound (CEUS) in the diagnosis of a wide variety of pathologies. Sonography reliably identifies a wide range of diseases, and the efficacy of modern ultrasound has dramatically improved with contrast enhancement. This book covers almost all aspects of CEUS starting from basic principles and ending with features of its application in individual organs. In particular, it explores the diseases of abdominal, retroperitoneal, and pelvic organs as well as superficial structures, highlighting the characteristic features of typical findings. Focal lesions are discussed in depth, with attention to their early detection and differential diagnosis. Besides, a practical approach to the stratification of the risk of malignancies is provided. The authors summarized their own experience with CEUS in oncology, hepatology, gynecology, urology, endocrinology, and other fields of medicine. The role of CEUS in differential diagnosis of various disorders of the female reproductive system is comprehensively discussed as well. The presentation is clear and concise, and richly illustrated. The book will be a helpful tool for both residents and practitioners approaching ultrasound diagnostics, as well for more experienced radiologists and other professionals.

Antimicrobial-associated diarrhea is often caused by Clostridium difficile; this disease can best be diagnosed by detection of fecal cytotoxin in a tissue culture assay and, when therapy is indicated, can be effectively treated with orally administered vancomycin. The cause of disease in most cases of antimicrobial-associated diarrhea that do not involve C. difficile is not known; fortunately, this form of diarrhea 1S usually mild. Antimicrobial-associated diarrhea may also rarely involve s. aureus and certain enteric pathogens. 37 QHAPTER 4 Qf. TECTlON. ISOLATION Al:iQ...IQENTlFICATlON OF CLOSTRIDIUM PIFFICILE S. P. BORRIELLO and PAULINE HONOUR Introduction 38 Detection of Co dlfflcile in stools 38 Direct methods 38 Indirect methods 39 Isolation of Co djfficjle 40 Identification of Co difflcile 44 38 DETECTION ISOLATION AND IDENTIFICATION OF CLOSTRIDIUM DIFFICILE S. P. Borriello and Pauline Honour Introduction In view of the mounting evidence generated world wide in the last few years that firmly implicates GBP. difficile as the aetiological agent in both antibiotic and non-antibiotic associated pseudomembranous colitis (Larson ~ al. , 1978, Bartlett ~ al. , 1978a, George ~ al. , 1978a), and also recent recognition of the fact that there may be a spectrum of gastrointestinal diseases associated with GBP. difficile infections (Borriello and Larson, 1981, Bolton ~ al. , 1980, Brettle ~ al. , 1982), an increasing number of laboratories are seeking to detect, isolate and identify GBP. difficile from clinical samples.

The impact of Helicobacter pylori on basic science and the clinical management of patients with the complications of this infection is bewildering. The explosion of new information both in the laboratory and at the bedside has progressed at an unprecedented rate. Our main objective in furthering this progress has been to integrate this new information and organize a series of top quality presentations and discussions between investigators and clinicians on all aspects of H. pylori research and to review the current position and future research directions. To that end, the second meeting Helicobacter pylori: Basic Mechanisms to Clinical Cure was organized in June 1996 in Ottawa, Canada, following the successful format of the first such meeting held in Amelia Island, Florida, in 1993. The meeting again focused on all timely aspects of H. pylori research. Internationally renowned basic and clinical scientists, all experts in their respective fields, explored in depth the spectrum of H. pylori infection and the related complications of gastritis, peptic ulcer, gastric cancer and lymphoma. The presentations covered: the genetic heterogeneity of the organism, including the expression of virulence factors determined by the genetic pathogenicity island; the intricate cascade of chemokines and cytokines leading to mucosal inflammation; the complexities of the mucosal immune response, favoring a slight Th1 over Th2 lymphocyte imbalance; the fundamental issue of the apparent paradox of the induction of both apoptosis and epithelial hyperproliferation; the pathophysiological consequences of gastric mucosal inflammation with respect to the elevation of gastrin and the acid secretory response; themechanisms leading to peptic ulcer disease, gastric carcinoma and gastric mucosa-associated lymphoid tissue (MALT) lymphoma; the established and novel therapeutic approaches to eradication and finally the prospects for successful therapeutic and preventative vaccination. The comprehensive manuscripts in this book of the proceedings of the meeting reflect the most up-to-date information and state of the art approaches to research and management of H. pylori infection and will provide an invaluable reference source.

Similar to the first edition, the goal of Mayo Clinic Gastrointestinal Imaging Review, 2nd Edition is to provide an atlas of common abnormalities that affect the gastrointestinal tract. This comprehensive review includes all imaging modalities used within GI radiology, as well as plain radiographs, fluoroscopy, ultrasound, CT, MR, angiography, and nuclear medicine. Focusing solely on adult conditions, the book is divided into 13 chapters covering a separate organ within the gastrointestinal system and a final exam chapter reviewing all chapter content. Each organ-focused chapter is subdivided into sections related to diseases or findings of that organ. Running headers allow the reader to rapidly identify the chapter and the section being viewed.
Large, high-quality images are presented in a format so that they can be reviewed as unknowns. A discussion of the cases is presented as if it were a consultation-- with a description of the findings, differential diagnosis, and final diagnosis. A brief discussion of the disease is included. Emphasis is placed on brevity of the text and a single-page layout for all but a few cases. Study guides at the end of each section are in the form of tables summarizing major radiographic findings into differential considerations with brief imaging clues to a specific diagnosis and case references within the book. The end of each chapter lists differential diagnoses for the chapter's specific organ. Full-color composite anatomical illustrations show the immediately obvious appearance of common conditions that correlate with major radiologic findings.

In the past several decades, the medical community has witnessed professionals, instead of generalizing their knowledge, specialize in a specific area of practice. Head and neck surgery have thus become a major specialty within the surgical domain, and the management of specific gland disorders encompasses a broad array of both benign and malignant diseases. Diagnostic Techniques and Therapeutic Strategies for Parotid Gland Disorders is a collection of innovative research on the clinical and diagnostic techniques as well as several therapeutic strategies of parotid gland disorders. Serving as a quick reference and practice manual, the book addresses a wide range of topics including embryological development and anomalies, histology and surgical anatomy, physiology, parotid gland evaluation, xerostomia, traumatic injuries and fistulae, calculi, sialosis, sialadenitis, cysts and tumors of the parotid gland, and the various techniques and potential complications of parotidectomy including Frey's syndrome, in addition to extra-temporal facial nerve reconstruction procedures. It is ideally designed for medical professionals, surgeons, researchers, academicians, and medical students.

Offering 171 unique cases, Gastrointestinal Imaging Cases features over 700 high-quality images. The clinically relevant cases cover both benign and malignant conditions and are grouped into 12 sections organized by the parts of the Gastrointestinal System including: the Pharynx and Esophagus, Stomach, Duodenum, Small Intestine, Appendix, Colon, Rectum, and Anus, Liver, Gallbladder, Bile Ducts, Pancreas, Spleen, and Mesentery and Peritoneum. Within each section, the cases appear in a random order to facilitate the self-assessment experience of reading cases as unknowns. Each case is complete with pertinent findings, differential diagnoses, management recommendations, teaching points, and suggested further reading. This comprehensive, yet easy-to-follow, casebook is an ideal tool for the resident preparing for the boards, the fellow for recertification exams, or the radiologist in need of a quick review.

This book, Mechanisms in the Pathogenesis of Enteric Diseases 2, is an out come of the Second International Rushmore Conference on Mechanisms in the Pathogenesis of Enteric Diseases, held September 3D-October 3, 1998 in Rapid City, South Dakota, USA. Its chapters represent many of the reviews and papers presented at the conference. The meeting was organized by members of the North-Central Regional Research Committee "NC-62," a consortium of researchers of bovine and swine enteric diseases from land-grant institutions supported by the United States Department of Agriculture. The Rushmore Conferences were conceived as a forum for an interdiscipli nary discussion of mechanisms of infectious enteric diseases. It was intended that such a discussion would stimulate cross-pollination of ideas, and nurture synergistic collabora tions among scientists who might otherwise not interact. Enteric diseases are caused by widely divergent pathogens and parasites in broadly different settings, and affect multi ple organ systems. Some enteric diseases affect a single species, while others may affect multiple species, perhaps including human beings. Some enteric diseases were present in antiquity, while others have recently emerged. Knowledge regarding a particular disease or pathogen has frequently proven useful in understanding another disease or pathogen, because common themes in pathogenesis exist. As this knowledge base grows, strategies in the prevention and control of various enteric diseases often converge. Cross-discipli nary discussions and collaborations facilitate growth of this knowledge base, as well as development of tools for disease interdiction."

This volume provides current protocols that can be used in various experimental settings involving bifidobacteria. Chapters guide readers through experimental protocols on procedures to isolate and cultivate bifidobacteria, taxonomic identification of bifidobacterial isolates, sequencing and annotate genomes, physiologically characterize bifidobacteria, and methods on the genetic manipulation of bifidobacterial strains. Written in the highly successful Methods in Molecular Biology series format, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible laboratory protocols, and tips on troubleshooting and avoiding known pitfalls. Authoritative and cutting-edge, Bifidobacteria: Methods and Protocols aims to be a useful practical guide to researches to help further their study in this field.

Despite the fact that the incidence of gastric cancer is declining in the Western world, it remains a significant problem with respect to accurate diagnosis and treatment since it has a high mortality rate. In June 1989 an International Conference was held at the University of Rome "La Sapienza" entitled "New Trends in Gastric Cancer: Background and videosurgery." During this meeting background information on the aetiopathogenesis of gastric cancer was presented together with talks and video presentations on the latest advances in the treatment of gastric carcinoma, both from the European and Japanese experience. Because of the poor prognosis of gastric carcinoma there is increasing pressure for early detection. Some of the problems in the early detection of gastric carcinoma are discussed together with methods of surveillance of high-risk subjects. It is generally accepted that the surgical approach to gastric carcinoma should take into account the site and extent of the lesion and there are chapters on new methods for pre and intraoperative staging of the disease which allow a more logical approach to surgery. A comparison between Japanese and Western rule and results was attempted and reasons for the differences were investigated. Since the field is still evolving not all aspects could be covered, and those angles not approached in this book will be addressed in a second International Conference to be held in Rome in June 1990.

Medical nutrition therapy plays a central role in the management of diseases including reducing disease risk, slowing disease progression, and monitoring nutritional status. Though a nutrition care process has been implemented in some countries, many do not have a national standard for nutrition and dietetic practices for different diseases including the scope of gastrointestinal disorders. Moreover, there is no guidance to dietetic practice by most of the governing bodies of the world. Cases on Medical Nutrition Therapy for Gastrointestinal Disorders presents real-world case studies on nutrition assessment, diagnosis, intervention, monitoring, and evaluation standards and practices. Moreover, the cases provide critical updates on the use of medical nutrition therapy for gastrointestinal disorders that include but are not limited to Celiac Disease, Crohn's Disease, Irritable Bowel Syndrome, constipation, and bowel obstructions and discusses strategies for the prevention and management of these disorders. Registered dietitians, dietetic interns, nutritionists, healthcare professionals, researchers, academicians, and students will benefit from the scenarios presented within this book.

The obesity epidemic has generated immense interest in recent years due to the wide-ranging and significant adverse health and economic consequences that surround the problem. Much attention has been focused on behaviors that lead to obesity, in particular to over consumption of energy-dense food and to sedentary lifestyle. However, obesity is an extremely complex condition with poorly defined pathogenesis. Thanks to greatly enhanced research in the area, the discovery of pathways in the brain and peripheral organs that mediate energy homeostasis has provided a framework for understanding the biological basis of obesity. Metabolic Basis of Obesity adds an important new dimension to the growing literature on obesity by offering a comprehensive review of specifically how metabolic imbalance culminates in obesity. Developed by a team of expert authors, this important title discusses the principles of energy balance, genetics of body weight regulation, hormones and adipokines, and metabolic pathways in the brain, liver, muscle and fat, to name just several of the areas covered. The book also examines the connection between obesity and diabetes, cardiovascular disease and other complications. Current and future diagnostic and treatment strategies are also reviewed. Comprehensive and timely, Metabolic Basis of Obesity is an essential reference for understanding the burgeoning problem of obesity.