Glutamine Metabolism in Mammalian Tissues

Glutamine Metabolism in Mammalian Tissues
Author: D. Häussinger
Publisher: Springer
Total Pages: 322
Release: 1984-07
Genre: Medical
ISBN:

Glutamine is a key aminoacid for the synthesis of numerous biologic­ ally important compounds in mammalian cells and is a carrier form of ammonia. The advance in knowledge on the metabolic significance of this amino acid is presented in in-depth treatments by experts in this active research field. This includes the enzymology of glutamine synthe­ tase and glutaminase activities in different mammalian organs, notably liver, kidney and brain; properties of glutamine transport across bio­ logical membranes; role of glutamine metabolism in the liver, with emphasis on the recent discovery of intercellular heterogeneity with respect to enzyme distribution and its functional consequences for ammonia/urea metabolism and pH regulation; renal and intestinal glutamine metabolism; cerebral glutamine/ glutamate interrelationships; skeletal muscle; role of glutamine in cell culture; and finally the clinical aspects, including the new outlook of glutamine antagonists in cancer therapy as well as the role of glutamine in hepatic coma and encephalo­ pathy. Some, but not all, of the contributors to this work attended the 48th Conference of the Gesellschaft fur Biologische Chemie on glutamine metabolism held in Gottingen, W. Germany, in September 1983. This conference was supported by the Stiftung Volkswagenwerk, Dr. H. Falk Foundation, Freiburg, and the J. Pfrimmer Co. , Erlangen. The abstracts of the contributions to the conference were published in Hoppe-Seyler's Z. Physiol. Chem. 364,1237-125,6,1983, and this book is not intended as the proceedings of that meeting.

The Heterogeneity of Cancer Metabolism

The Heterogeneity of Cancer Metabolism
Author: Anne Le
Publisher: Springer
Total Pages: 186
Release: 2018-06-26
Genre: Medical
ISBN: 331977736X

Genetic alterations in cancer, in addition to being the fundamental drivers of tumorigenesis, can give rise to a variety of metabolic adaptations that allow cancer cells to survive and proliferate in diverse tumor microenvironments. This metabolic flexibility is different from normal cellular metabolic processes and leads to heterogeneity in cancer metabolism within the same cancer type or even within the same tumor. In this book, we delve into the complexity and diversity of cancer metabolism, and highlight how understanding the heterogeneity of cancer metabolism is fundamental to the development of effective metabolism-based therapeutic strategies. Deciphering how cancer cells utilize various nutrient resources will enable clinicians and researchers to pair specific chemotherapeutic agents with patients who are most likely to respond with positive outcomes, allowing for more cost-effective and personalized cancer therapeutic strategies.

Glutamine and Glutamate Mammals

Glutamine and Glutamate Mammals
Author: Elling Kvamme
Publisher: CRC Press
Total Pages: 280
Release: 2018-01-18
Genre: Medical
ISBN: 1351080741

Based on the joint effort of a great many top scientists, this book covers most aspects of the metabolism and function of glutamine and glutamate in mammals.

Glutamine and Glutamate Mammals

Glutamine and Glutamate Mammals
Author: Elling Kvamme
Publisher: CRC Press
Total Pages: 299
Release: 2018-01-18
Genre: Medical
ISBN: 1351089188

Based on the joint effort of a great many top scientists, this book covers most aspects of the metabolism and function of glutamine and glutamate in mammals.

The Glutamate/GABA-Glutamine Cycle

The Glutamate/GABA-Glutamine Cycle
Author: Arne Schousboe
Publisher: Springer
Total Pages: 420
Release: 2016-11-25
Genre: Medical
ISBN: 3319450964

Fundamental biochemical studies of basic brain metabolism focusing on the neuroactive amino acids glutamate and GABA combined with the seminal observation that one of the key enzymes, glutamine synthetase is localized in astroglial cells but not in neurons resulted in the formulation of the term “The Glutamate-Glutamine Cycle.” In this cycle glutamate released from neurons is taken up by surrounding astrocytes, amidated by the action of glutamine synthetase to glutamine which can be transferred back to the neurons. The conversion of glutamate to glutamine is like a stealth technology, hiding the glutamate molecule which would be highly toxic to neurons due to its excitotoxic action. This series of reactions require the concerted and precise interaction of a number of enzymes and plasma membrane transporters, and this volume provides in-depth descriptions of these processes. Obviously such a series of complicated reactions may well be prone to malfunction and therefore neurological diseases are likely to be associated with such malfunction of the enzymes and transporters involved in the cycle. These aspects are also discussed in several chapters of the book. A number of leading experts in neuroscience including intermediary metabolism, enzymology and transporter physiology have contributed to this book which provides comprehensive discussions of these different aspects of the functional importance of the glutamate-glutamine cycle coupling homeostasis of glutamatergic, excitatory neurotransmission to basic aspects of brain energy metabolism. This book will be of particular importance for students as well as professionals interested in these fundamental processes involved in brain function and dysfunction.

Mammalian Amino Acid Transport

Mammalian Amino Acid Transport
Author: D. Häussinger
Publisher: Springer Science & Business Media
Total Pages: 316
Release: 2013-06-29
Genre: Science
ISBN: 1489911618

Amino acid transport is a part of each of two larger subjects, amino acid metabolism and the biomembrane transport of various . small molecules and ions. Nevertheless in this volume we treat amino acid transport as more than a fragment of either of these two larger subjects. A more comprehensive approach is justified when we remember two historic and ongoing aspects of the title subject. First, amino acid transport had its beginning and acquired a distinct momentum (even if somewhat interrupted from 1913 until about 1945) as amino acid metabolism with the central and pioneer work of Van Slyke and Meyer in 1913. The reviews in this volume will show that it steadily becomes a larger aspect of amino acid metabolism, broadly perceived. These chapters will show for how many organelles, cells, tissues, organs and organ systems, the transmembrane compartmentations and flows of amino acids play very large parts in their fundamental biological relations. The authors here are tending collectively to evaluate an understanding of amino acid flows across biomernbranes, and the regulation of these flows, as necessary to an ultimate understanding of the full range of development and metabolism. Such an understanding goes far beyond the purely substrate-destabilizing contributions by enzymes, which have often been arbitrarily limited to that conceptual entity, "the cell", and which for so long a splendid time had most of biochemical research attention.

Metabolism in Cancer

Metabolism in Cancer
Author: Thorsten Cramer
Publisher: Springer
Total Pages: 272
Release: 2016-08-24
Genre: Medical
ISBN: 3319421182

This textbook presents concise chapters written by internationally respected experts on various important aspects of cancer-associated metabolism, offering a comprehensive overview of the central features of this exciting research field. The discovery that tumor cells display characteristic alterations of metabolic pathways has significantly changed our understanding of cancer: while the first description of tumor-specific changes in cellular energetics was published more than 90 years ago, the causal significance of this observation for the pathogenesis of cancer was only discovered in the post-genome era. The first 10 years of the twenty-first century were characterized by rapid advances in our grasp of the functional role of cancer-specific metabolism as well as the underlying molecular pathways. Various unanticipated interrelations between metabolic alterations and cancer-driving pathways were identified and currently await translation into diagnostic and therapeutic applications. Yet the speed, quantity, and complexity of these new discoveries make it difficult for researchers to keep up to date with the latest developments, an issue this book helps to remedy.

Military Strategies for Sustainment of Nutrition and Immune Function in the Field

Military Strategies for Sustainment of Nutrition and Immune Function in the Field
Author: Institute of Medicine
Publisher: National Academies Press
Total Pages: 722
Release: 1999-05-13
Genre: Medical
ISBN: 0309173183

Every aspect of immune function and host defense is dependent upon a proper supply and balance of nutrients. Severe malnutrition can cause significant alteration in immune response, but even subclinical deficits may be associated with an impaired immune response, and an increased risk of infection. Infectious diseases have accounted for more off-duty days during major wars than combat wounds or nonbattle injuries. Combined stressors may reduce the normal ability of soldiers to resist pathogens, increase their susceptibility to biological warfare agents, and reduce the effectiveness of vaccines intended to protect them. There is also a concern with the inappropriate use of dietary supplements. This book, one of a series, examines the impact of various types of stressors and the role of specific dietary nutrients in maintaining immune function of military personnel in the field. It reviews the impact of compromised nutrition status on immune function; the interaction of health, exercise, and stress (both physical and psychological) in immune function; and the role of nutritional supplements and newer biotechnology methods reported to enhance immune function. The first part of the book contains the committee's workshop summary and evaluation of ongoing research by Army scientists on immune status in special forces troops, responses to the Army's questions, conclusions, and recommendations. The rest of the book contains papers contributed by workshop speakers, grouped under such broad topics as an introduction to what is known about immune function, the assessment of immune function, the effect of nutrition, and the relation between the many and varied stresses encountered by military personnel and their effect on health.