Introduction To Gastrointestinal Diseases Vol 1

Our own experience shows that there is no simple, yet of good scientific and clinical quality guide for practitioners and patients on gastrointestinal diseases. In the proposed book we will cover a vast area in the field, from GI tract physiology to disease diagnosis and treatment, in a comprehensive and approachable manner. The guide will not replace online resources (often used by patients) or specialized editions addressing experienced medical doctors, but rather fill the gap between those two. Our aim is to design this book so that it appeals to a wider audience; yet – if needed – encourages to explore the field further.

Learn the basics and more of gastrointestinal diseases. Gastrointestinal diseases have become a major medical, social and economic burden worldwide. The larger the number of patients suffering from gastric ulcer and colorectal cancer, the greater the need to properly diagnose and cure. This book is a comprehensive guide through GI diseases, which can be used by practitioners and patients. It will allow: - to explore the mechanisms underlying GI diseases - to accurately diagnose and find the best treatment - to learn how to alleviate GI disease symptoms by changing diet and lifestyle This guide has been written by experts in the field who understand the needs of doctors and their patients. With this book, you will make sure that the GI disease can be properly managed.

The microcirculation of the gastrointestinal tract is under the control of both myogenic and metabolic regulatory systems. The myogenic mechanism contributes to basal vascular tone and the regulation of transmural pressure, while the metabolic mechanism is responsible for maintaining an appropriate balance between O2 demand and O2 delivery. In the postprandial state, hydrolytic products of food digestion elicit a hyperemia, which serves to meet the increased O2 demand of nutrient assimilation. Metabolically linked factors (e.g., tissue pO2, adenosine) are primarily responsible for this functional hyperemia. The fenestrated capillaries of the gastrointestinal mucosa are relatively permeable to small hydrolytic products of food digestion (e.g., glucose), yet restrict the transcapillary movement of larger molecules (e.g., albumin). This allows for the absorption of hydrolytic products of food digestion without compromising the oncotic pressure gradient governing transcapillary fluid movement and edema formation. The gastrointestinal microcirculation is also an important component of the mucosal defense system whose function is to prevent (and rapidly repair) inadvertent epithelial injury by potentially noxious constituents of chyme. Two pathological conditions in which the gastrointestinal circulation plays an important role are ischemia/reperfusion and chronic portal hypertension. Ischemia/reperfusion results in mucosal edema and disruption of the epithelium due, in part, to an inflammatory response (e.g., increase in capillary permeability to macromolecules and neutrophil infiltration). Chronic portal hypertension results in an increase in gastrointestinal blood flow due to an imbalance in vasodilator and vasoconstrictor influences on the microcirculation. Table of Contents: Introduction / Anatomy / Regulation of Vascular Tone and Oxygenation / Extrinsic Vasoregulation: Neural and Humoral / Postprandial Hyperemia / Transcapillary Solute Exchange / Transcapillary Fluid Exchange / Interaction of Capillary and Interstitial Forces / Gastrointestinal Circulation and Mucosal Defense / Gastrointestinal Circulation and Mucosal Pathology I: Ischemia/Reperfusion / Gastrointestinal Circulation and Mucosal Pathology II: Chronic Portal Hypertension / Summary and Conclusions / References / Author Biography

This volume provides a comprehensive collection of classical and cutting edge protocols and techniques to examine the normal development and physiological functions of the gastrointestinal system and to model the most common digestive diseases. The chapters focus on diverse research topics including ex vivo systems to study gastrointestinal development and functions, in vivo imaging of the gastrointestinal tract, isolation and characterization of intestinal immune cells, and animal models of gastrointestinal inflammation and cancer. The Gastrointestinal Physiology and Diseases: Methods and Protocols book targets wide audience of physiologists, cell and developmental biologists, immunologists, and physician-scientists working in the field of gastroenterology and beyond. 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. Highly practical and clearly written, Gastrointestinal Physiology and Diseases: Methods and Protocols will serve both seasoned researchers as well as newcomers to the field and will provide a unique resource and expert guidance to modern laboratory techniques developed for examining normal functions and diseases of the gastrointestinal tract.

Provides basic consumer health information about the causes, symptoms, diagnosis, and treatment of digestive diseases and disorders of the gastrointestinal tract, including facts about the effects of food intolerances, infections, and certain cancers. Includes index, glossary of related terms, and other resources.

Covers benign gastrointestinal diseases and provides an in-depth discussion of many lesions, both common and uncommon. Each disease entity is discussed from the point of view of its demographics, pathophysiology, clinical features, gross and microscopic pathology, and treatment. The text is heavily illustrated with diagrams and gross and microscopic photographs.

These negative regulatory mechanisms of the intestinal immune system are disturbed in certain disease conditions, causing the immunocompetent cells to respond to food components and commensal bacteria by becoming activated and to overproduce inflammatory cytokines and chemokines. These disease conditions include food allergies, such as celiac disease, and the inflammatory bowel diseases, such as ulcerative colitis and Crohn's disease, although their exact etiological mechanisms remain to be revealed. --Book Jacket.