Author: P. Motta
Publisher: Springer Science & Business Media
ISBN: 1461320712
Category : Medical
Languages : en
Pages : 266
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Book Description
When established four years ago, the scope of this international series in electron microscopy essentially was to provide an opportunity for the pUblication of selected review contributions by specialists in ultrastructural research. Previous volumes presented over the last three years have focused on special topics of present interest in ~'ontemporary biomedicine such as endocrine cells, reproduction, and connective tissues. In these fielCls, in fact, integrated methods of electron microscopy have contributed much to generate new ideas and concepts of general value in both basic and clinical applications. The Ultrastructure of the Digestive Tract basically follows the same guidelines and style of the other books in the series and is an invited collection of selected contributions of authors from various laboratories active in the field of electron microscopy. Therefore, although the various chapters consist of individual topics, they nevertheless should be considered as interrelated contributions of specific subjects in the field. The idea was to have critical reviews of aspects previously published elsewhere by experts in the field who, as a rule, include other relevant information in their articles in order to update and enrich the subject. This book contains fifteen chapters by renowned electron microscopists. Each chapter, according to the policy of the editors, reviews a particular topic in great detail, providing updated information, study methods and results, authors' ideas on future investigative approaches, and possible guidelines for forthcoming work. We hope that this book will be useful to cell biologists, morphologists, physiologists, and pathologists.
Author: Carl J. Pfeiffer
Publisher: Igaku-Shoin Medical Publishers
ISBN:
Category : Medical
Languages : en
Pages : 314
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Book Description
Author: Peter R. Kvietys
Publisher: Morgan & Claypool Publishers
ISBN: 1615041176
Category : Medical
Languages : en
Pages : 127
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Book Description
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
Author: Fred Hossler
Publisher: John Wiley & Sons
ISBN: 1118284534
Category : Science
Languages : en
Pages : 966
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Book Description
Ultrastructure Atlas of Human Tissues presents a variety of scanning and transmission electron microscope images of the major systems of the human body. Photography with the electron microscope records views of the intricate substructures and microdesigns of objects and tissues, and reveals details within them inaccessible to the naked eye or light microscope. Many of these views have significance in understanding normal structure and function, as well as disease processes. This book offers a unique and comprehensive look at the structure and function of tissues at the subcellular and molecular level, an important perspective in understanding and combating diseases. • Presents the major systems of the human body through scanning and transmission electron microscope images • Has images prepared almost exclusively from human tissues • Includes electron micrographs of common pathologies such as fibrotic and emphysemic lung, kidney stones, sickle cell anemia, and skin parasites • Contains sets of 3D images in most chapters
Author: M. Shiner
Publisher: Springer Science & Business Media
ISBN: 1447113381
Category : Medical
Languages : en
Pages : 276
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Book Description
This book represents the culmination of the major aspect of Dr. Margot Shiner's professional career. It was she who devised the technique of jejunal biopsy which opened up whole new fields of small intestinal research, including microbiology, immunology, histochemistry and histopathology, thus greatly expanding our knowledge of fundamental aspects of absorptive patho physiology. Later the application of electron microscopy demonstrated the individual cell with its mechanisms both for absorption and for the production of so many chemicals such as mucus, enzymes and hormones. Like the vision from the peak in Darian, it opened up new worlds. The contribution to our understanding of cell structure and function has been greater than the direct elucidation of specific diseases but nevertheless, there are pointers to different mechanisms which could have wide applications. It is a book which serves a double function: On the one hand it is highly technical and a publication for the super expert, recording new landmarks of knowledge and interpretation. On the other hand, it is a book which can indeed fire the imagination of the rising generation of gastroenterologists, paediatricians, pathologists and medical scientists. Having seen the emergence of the art and science of present-day gastro enterology within my professional lifetime and having been able to provide the facilities for her work in the very early days, it is with particular pleasure and pride that I write this foreword.
Author: Theodore C. Fitzgerald
Publisher: Iowa State Press
ISBN:
Category : Nature
Languages : en
Pages : 336
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Book Description
Osteology; Arthrology; Angiology; Myology; Neurology; Splanchnology; Esthesiology; Endocrinology; Integument.
Author:
Publisher:
ISBN: 9780815332183
Category : Cells
Languages : en
Pages : 0
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Book Description
Author: Allessandro Riva
Publisher: Springer Science & Business Media
ISBN: 1461308690
Category : Medical
Languages : en
Pages : 281
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Book Description
This volume, the sixth of the series, represents the natural counterpart of the previous volume, Ultra structure of the Digestive Tract. Unlike the latter, however, whose contents fell entirely within the domains of gastroenterology, Ultrastructure of the Extraparietal Glands of the Digestive Tract encom passes a few cognate sciences, such as hepatology, pancreatology, and even oral biology, which are usually dealt with separately. This allows, starting from cell biology, embryology, and comparative anatomy, a comprehensive survey of organs that have much in common both structurally and functionally. The chapters of this book have been compiled by well-known experts in the field with the aim not only of reviewing and pointing out the state of the art of the subject covered, but also of giving directions for future work. Furthermore, through the integration of electron microscopy with immunocytochemistry, autoradiography, freeze fracture, maceration, enzymatic digestion, etc., and by providing superb illus trative material, the authors substantiate the pivotal role played by modern morphology in under standing human physiology and pathology. In fact, it must be stressed, that a consistent part of the tissues studied here are from human origin. We believe that this volume should be read, not only by scientists and teachers active in the field, but also by a larger audience of students and professionals interested in knowing the scientific foundations of biomedicine.
Author: William J. Snape, Jr.
Publisher: CRC Press
ISBN: 9780849301742
Category : Medical
Languages : en
Pages : 388
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Book Description
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.
Author: D. J. Chivers
Publisher: Cambridge University Press
ISBN: 0521440165
Category : Medical
Languages : en
Pages : 462
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Book Description
Biochemical, physiological and morphological aspects of mammalian digestive systems.
