Download or read book Glycolysis at 75 Is it Time to Tweak the First Elucidated Metabolic Pathway in History written by Avital Schurr and published by Frontiers Media SA. This book was released on 2015-07-08 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: Glycolysis, the pathway of enzymatic reactions responsible for the breakdown of glucose into two trioses and further into pyruvate or lactate, was elucidated in 1940. For more than seven decades, it has been taught precisely the way its sequence was proposed by Embden, Meyerhof and Parnas. Accordingly, two outcomes of this pathway were proposed, an aerobic glycolysis, with pyruvate as its final product, and an anaerobic glycolysis, identical to the aerobic one, except for an additional reaction, where pyruvate is reduced to lactate. Several studies in the 1980s have shown that both muscle and brain tissues can oxidize and utilize lactate as an energy substrate, challenging this monocarboxylate’s reputation as a useless end-product of anaerobic glycolysis. These findings were met with great skepticism about the idea that lactate could be playing a role in bioenergetics. In the past quarter of a century monocarboxylate transporters (MCTs) were identified and localized in both cellular and mitochondrial membranes. A lactate receptor has been identified. Direct and indirect evidence now indicate that the enzyme lactate dehydrogenase (LDH) resides not only in the cytosol, as part of the glycolytic pathway machinery, but also in the mitochondrial outer membrane. The mitochondrial form of the enzyme oxidizes lactate to pyruvate and concomitantly produces the reducing agent NADH. These findings have shed light on a major drawback of the originally proposed aerobic version of the glycolytic pathway i.e., its inability to regenerate NAD+, as opposed to anaerobic glycolysis that features the cyclical ability of regenerating NAD+ upon pyruvate reduction to lactate by the cytosolic form of LDH. The malate-aspartate shuttle (MAS), a major redox shuttle in the brain, was proposed as an alternative pathway for NAD+ generation for aerobic glycolysis. Nonetheless, would MAS really be necessary for that function if glycolysis always proceeds to the end-products, lactate and NAD+? An additional dilemma the originally proposed aerobic glycolysis presents has to do with the glycolytic pathway of erythrocytes, which despite its highly aerobic environment, always produces lactate as its end-product. It is time to reexamine the original, dogmatic separation of glycolysis into two distinct pathways and put to test the hypothesis of a unified, singular pathway, the end-product of which is lactate, the real substrate of the mitochondrial TCA cycle.
Download or read book Mitochondria and Anaerobic Energy Metabolism in Eukaryotes written by William F. Martin and published by Walter de Gruyter GmbH & Co KG. This book was released on 2020-12-07 with total page 269 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mitochondria are sometimes called the powerhouses of eukaryotic cells, because mitochondria are the site of ATP synthesis in the cell. ATP is the universal energy currency, it provides the power that runs all other life processes. Humans need oxygen to survive because of ATP synthesis in mitochondria. The sugars from our diet are converted to carbon dioxide in mitochondria in a process that requires oxygen. Just like a fire needs oxygen to burn, our mitochondria need oxygen to make ATP. From textbooks and popular literature one can easily get the impression that all mitochondria require oxygen. But that is not the case. There are many groups of organismsm known that make ATP in mitochondria without the help of oxygen. They have preserved biochemical relicts from the early evolution of eukaryotic cells, which took place during times in Earth history when there was hardly any oxygen avaiable, certainly not enough to breathe. How the anaerobic forms of mitochondria work, in which organisms they occur, and how the eukaryotic anaerobes that possess them fit into the larger picture of rising atmospheric oxygen during Earth history are the topic of this book.
Download or read book Molecular Biology of the Cell written by and published by . This book was released on 2002 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Textbook of Veterinary Physiological Chemistry written by Larry Engelking and published by Academic Press. This book was released on 2014-08-12 with total page 789 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bridging the gap between basic and clinical science concepts, the Textbook of Veterinary Physiological Chemistry, Third Edition offers broad coverage of biochemical principles for students and practitioners of veterinary medicine. The only recent biochemistry book written specifically for the veterinary field, this text covers cellular-level concepts related to whole-body physiologic processes in a reader-friendly, approachable manner. Each chapter is written in a succinct and concise style that includes an overview summary section, numerous illustrations for best comprehension of the subject matter, targeted learning objectives, and end of the chapter study questions to assess understanding. With new illustrations and an instructor website with updated PowerPoint images, the Textbook of Veterinary Physiological Chemistry, Third Edition, proves useful to students and lecturers from diverse educational backgrounds. Sectional exams and case studies, new to this edition, extend the breadth and depth of learning resources. - Provides newly developed case studies that demonstrate practical application of concepts - Presents comprehensive sectional exams for self-assessment - Delivers instructor website with updated PowerPoint images and lecture slides to enhance teaching and learning - Employs a succinct communication style in support of quick comprehension
Download or read book The Na H Exchanger written by Larry Fliegel and published by New York : Springer. This book was released on 1996 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Compartment Syndrome written by Cyril Mauffrey and published by Springer Nature. This book was released on 2019-09-02 with total page 187 pages. Available in PDF, EPUB and Kindle. Book excerpt: Compartment syndrome is a complex physiologic process with significant potential harm, and though an important clinical problem, the basic science and research surrounding this entity remains poorly understood. This unique open access book fills the gap in the knowledge of compartment syndrome, re-evaluating the current state of the art on this condition. The current clinical diagnostic criteria are presented, as well as the multiple dilemmas facing the surgeon. Pathophysiology, ischemic thresholds and pressure management techniques and limitations are discussed in detail. The main surgical management strategy, fasciotomy, is then described for both the upper and lower extremities, along with wound care. Compartment syndrome due to patient positioning, in children and polytrauma patients, and unusual presentations are likewise covered. Novel diagnosis and prevention strategies, as well as common misconceptions and legal ramifications stemming from compartment syndrome, round out the presentation. Unique and timely, Compartment Syndrome: A Guide to Diagnosis and Management will be indispensable for orthopedic and trauma surgeons confronted with this common yet challenging medical condition.
Download or read book Medical Biochemistry written by Antonio Blanco and published by Academic Press. This book was released on 2022-03-23 with total page 910 pages. Available in PDF, EPUB and Kindle. Book excerpt: This second edition of Medical Biochemistry is supported by more than 45 years of teaching experience, providing coverage of basic biochemical topics, including the structural, physical, and chemical properties of water, carbohydrates, lipids, proteins, and nucleic acids. In addition, the general aspects of thermodynamics, enzymes, bioenergetics, and metabolism are presented in straightforward and easy-to-comprehend language. This book ties these concepts into more complex aspects of biochemistry using a systems approach, dedicating chapters to the integral study of biological phenomena, including cell membrane structure and function, gene expression and regulation, protein synthesis and post-translational modifications, metabolism in specific organs and tissues, autophagy, cell receptors, signal transduction pathways, biochemical bases of endocrinology, immunity, vitamins and minerals, and hemostasis. The field of biochemistry is continuing to grow at a fast pace. This edition has been revised and expanded with all-new sections on the cell plasma membrane, the human microbiome, autophagy, noncoding, small and long RNAs, epigenetics, genetic diseases, virology and vaccines, cell signaling, and different modes of programmed cell death. The book has also been updated with full-color figures, new tables, chapter summaries, and further medical examples to improve learning and better illustrate the concepts described and their clinical significance. - Integrates basic biochemistry principles with molecular biology and molecular physiology - Illustrates basic biochemical concepts through medical and physiological examples - Utilizes a systems approach to understanding biological phenomena - Fully updated for recent studies and expanded to include clinically relevant examples and succinct chapter summaries
Download or read book Sweet Biochemistry written by Asha Kumari and published by Elsevier. This book was released on 2023-07-20 with total page 243 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sweet Biochemistry: Remembering Structures, Cycles, and Pathways by Mnemonics, Second Edition makes biochemistry lively, interesting and memorable by connecting objects, images and stories to biochemistry concepts. Here, Dr. Asha Kumari has converted cycles and difficult pathways into very simple formula and short stories and images to help readers see things in complicated cycles and better visualize biochemistry. As biochemistry is evolving steadily, with new and impactful topics, this new edition has been fully updated to include mnemonics on timely topics in biochemistry such as DNA replication, RNA, transcription, translation, and CRISPR technology, as well as fundamentals of immunity. - Provides quick, indigenous formula, mnemonics, figures, poems and short stories to absorb key concepts in biochemistry - Presents original diagrams that are easy to recall - Features simplified tables for remembering distinguishing features - Updated to address evolving topics in basic and medical biochemistry, including DNA replication, RNA transcription and translation and immunity fundamentals
Download or read book Channels Carriers and Pumps written by Wilfred D. Stein and published by Elsevier. This book was released on 2014-12-09 with total page 423 pages. Available in PDF, EPUB and Kindle. Book excerpt: An introduction to the principles of membrane transport: How molecules and ions move across the cell membrane by simple diffusion and by making use of specialized membrane components (channels, carriers, and pumps). The text emphasizes the quantitative aspects of such movement and its interpretation in terms of transport kinetics. Molecular studies of channels, carriers, and pumps are described in detail as well as structural principles and the fundamental similarities between the various transporters and their evolutionary interrelationships. The regulation of transporters and their role in health and disease are also considered. - Provides an introduction to the properties of transport proteins: channels, carriers, and pumps - Presents up-to-date information on the structure of transport proteins and on their function and regulation - Includes introductions to transport kinetics and to the cloning of genes that code transport proteins - Furnishes a link between the experimental basis of the subject and theoretical model building
Download or read book Prokaryotic Metabolism and Physiology written by Byung Hong Kim and published by Cambridge University Press. This book was released on 2019-05-16 with total page 509 pages. Available in PDF, EPUB and Kindle. Book excerpt: Extensive and up-to-date review of key metabolic processes in bacteria and archaea and how metabolism is regulated under various conditions.
Download or read book Encyclopedic Reference of Parasitology written by Heinz Mehlhorn and published by Springer Science & Business Media. This book was released on 2001-05-21 with total page 684 pages. Available in PDF, EPUB and Kindle. Book excerpt: This second edition provides a comprehensive review of the facts and trends in veterinarian and human parasitology. Several internationally renowned specialists have been added to the authors of the first edition, and the whole is now organised in an encyclopedic arrangement of comprehensive keywords, thus speeding up the search for information.
Download or read book Essentials of Medical Biochemistry written by Chung Eun Ha and published by Academic Press. This book was released on 2011-01-28 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt: Expert biochemist N.V. Bhagavan's new work condenses his successful Medical Biochemistry texts along with numerous case studies, to act as an extensive review and reference guide for both students and experts alike. The research-driven content includes four-color illustrations throughout to develop an understanding of the events and processes that are occurring at both the molecular and macrolecular levels of physiologic regulation, clinical effects, and interactions. Using thorough introductions, end of chapter reviews, fact-filled tables, and related multiple-choice questions, Bhagavan provides the reader with the most condensed yet detailed biochemistry overview available. More than a quick survey, this comprehensive text includes USMLE sample exams from Bhagavan himself, a previous coauthor. - Clinical focus emphasizing relevant physiologic and pathophysiologic biochemical concepts - Interactive multiple-choice questions to prep for USMLE exams - Clinical case studies for understanding basic science, diagnosis, and treatment of human diseases - Instructional overview figures, flowcharts, and tables to enhance understanding
Download or read book Biology for AP Courses written by Julianne Zedalis and published by . This book was released on 2017-10-16 with total page 1923 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biology for AP® courses covers the scope and sequence requirements of a typical two-semester Advanced Placement® biology course. The text provides comprehensive coverage of foundational research and core biology concepts through an evolutionary lens. Biology for AP® Courses was designed to meet and exceed the requirements of the College Board’s AP® Biology framework while allowing significant flexibility for instructors. Each section of the book includes an introduction based on the AP® curriculum and includes rich features that engage students in scientific practice and AP® test preparation; it also highlights careers and research opportunities in biological sciences.
Download or read book Fundamentals of Bacterial Physiology and Metabolism written by Rani Gupta and published by Springer Nature. This book was released on 2021-04-20 with total page 670 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides useful information on microbial physiology and metabolism. The key aspects covered are prokaryotic diversity, growth physiology, basic metabolic pathways and their regulation, metabolic diversity with details of various unique pathways. Another focus area is stress physiology with details on varying environmental stresses, signal transduction, adaptation and survival. For instructional purposes, the book provides case studies, interesting facts, techniques etc. which help in showcasing the inter-disciplinary nature and bridge the gap between various aspects of applied microbiology.
Download or read book Brain Energy Metabolism written by Johannes Hirrlinger and published by Humana Press. This book was released on 2014-09-16 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Brain Energy Metabolism addresses its challenging subject by presenting diverse technologies allowing for the investigation of brain energy metabolism on different levels of complexity. Model systems are discussed, starting from the reductionist approach like primary cell cultures which allow assessing of the properties and functions of a single brain cell type with many different types of analysis, however, at the expense of neglecting the interaction between cell types in the brain. On the other end, analysis in animals and humans in vivo is discussed, maintaining the full complexity of the tissue and the organism but making high demands on the methods of analysis. Written for the popular Neuromethods series, chapters include the kind of detailed description and key implementation advice that aims to support reproducible results in the lab. Meticulous and authoritative, Brain Energy Metabolism provides an ideal guide for researchers interested in brain energy metabolism with the hope of stimulating more research in this exciting and very important field.
Download or read book Acid Base Disorders written by Alluru S. Reddi and published by Springer Nature. This book was released on 2019-10-31 with total page 313 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a concise yet comprehensive overview of acid-base disorders. Each chapter reviews an acid-base disorder, covering pathophysiology, evaluation, and management of the disorder. The chapters also include clinical cases and a Q&A section, based on scenarios and questions that clinicians regularly encounter when treating patients with these disorders. The book concludes with two chapters on acid-based disorders in special patient populations, including critically ill patients, pregnant patients, and surgical patients. Written by an expert in the field, Acid-Base Disorders: Clinical Evaluation and Management is a state-of-the-art resource that should assist clinicians and practitioners in managing patients with acid-base disorders.
Download or read book Clinical Sports Medicine written by Walter R. Frontera and published by Elsevier Health Sciences. This book was released on 2007-01-01 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: Accompanying CD-ROM contains ... "convenient electronic access to the text's illustrations, downloadable for use in presentations, as well as diagnosis-specific office handouts that can be given to patients who want to know more about their conditions."--P. [4] of cover.
