Glycogen and its Related Enzymes of Metabolism in the Central Nervous System

Glycogen and its Related Enzymes of Metabolism in the Central Nervous System
Author: M.Z.M. Ibrahim
Publisher: Springer Science & Business Media
Total Pages: 144
Release: 2013-12-11
Genre: Medical
ISBN: 3642868754
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The glycogen content of normal mammalian CNS is small when compared with that of some other mammalian tissues such as liver and muscle. Nevertheless, this glycogen content normally comprises at least one quarter of its total reserve of energy, the rest being adenosine triphosphate (ATP), phosphocreatine and glucose. Since this glycogen undergoes a turnover 50-100 times that of brain lipids, and exceeds by several orders of magnitude that of liver glycogen, it most likely plays a dynamic role in the metabolism of brain, Gatfield et al. (1966), Prasannan and Subrahmanyam (1968b), Brunner et al. (1971), Edwards and Rogers (1972) and Watanabe and Passonneau (1973). Glycogen also has an unequal distribution in the normal mammalian brain and spinal cord (Shimizu and Kumamoto, 1952; Shimizu and Okada, 1957; Friede, 1966; Shanthaveerappa et al., 1966; Ibrahim etal., 1970a), and it is possible that areas showing more glycogen "are inherently vulnerable and that their extra glycogen is an added protective mechanism" (Ibrahim, 1972). However, this is probably not the only explanation for the unequal distribution of glycogen since it is suggested for instance that neuronal glycogen may be normally impli cated in the process of synaptic transmission (Shanthaveerappa et al., 1966; Drummond and Bellward, 1970) and that retinal glycogen plays a role in the normal dark-light adaptation sequence (Shimizu and Maeda, 1953). Also, a wide variety of physiological, pathological and experimental conditions leads to a common response in the CNS, namely, accumulation of glycogen

Brain Glycogen Metabolism

Brain Glycogen Metabolism
Author: Mauro DiNuzzo
Publisher: Springer Nature
Total Pages: 443
Release: 2019-10-31
Genre: Medical
ISBN: 3030274802
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This book aims to provide a state-of-the-art summary of what is currently known about brain glycogen metabolism, detailing the recent advances in our understanding of why glycogen is so critical for normal brain function. The role of glycogen in cellular neurophysiology remains largely unclear and its specific contribution to the energy demand of brain cells is still elusive.Glycogen is the sole cerebral glucose reserve and is emerging as a fundamental component of brain energy metabolism. Pharmacological or genetic manipulation of glycogen metabolism in the brain impairs memory formation and increases susceptibility to epileptic seizures and cortical spreading depression. Glycogen is also directly implicated in abnormal neuronal excitability and mental retardation that characterize brain disorders like Lafora disease and Pompe disease.

Problems of the Biochemistry of the Nervous System

Problems of the Biochemistry of the Nervous System
Author: A. V. Palladin
Publisher: Elsevier
Total Pages: 343
Release: 2013-10-22
Genre: Medical
ISBN: 1483225852
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Problems of the Biochemistry of the Nervous System is a collection of papers presented at the Second Conference on the "Biochemistry of the Nervous System, organized by the Institute of Biochemistry of the Ukrainian Academy of Sciences on February 12-16, 1957. The contributors consider particularly Soviet's considerable research works in the field of functional biochemistry and the dynamic aspects of the biochemistry of the central nervous system. This text is organized into 11 parts encompassing 33 chapters, and begins with reviews on proteins and their metabolism in the brain and peripheral nerves; the effect of functional states such as excitation and inhibition upon them; and the changes occurring in their metabolism during growth. The succeeding parts contain articles about phosphorus-containing substances and methods of their investigation. These topics are followed by discussion of the chemical nature of a brain glycogen and its different fractions; carbohydrate metabolism during excitation and inhibition; and the adrenaline metabolism. Other parts tackle the ammonia metabolism, the developmental biochemistry of the brain, and the histochemical approach to study nucleoproteins of the neurons. The remaining parts deal with hypothermia and the cerebral metabolism in some pathological conditions. This book will prove useful to biochemists, biologists, and neurologists.

Carbohydrates and Energy Metabolism

Carbohydrates and Energy Metabolism
Author: Alan A. Boulton
Publisher: Humana
Total Pages: 383
Release: 2013-08-14
Genre: Medical
ISBN: 9781489941039
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The mammalian central nervous system depends almost - clusively on glucose as its major energy source. In addition, g- cose participates in other cerebral metabolic functions including the biosynthesis of neurotransmitters, such as acetylcholine and the amino acids. This volume of Neuromethods assembles currently available methods for the study of cerebral glucose and energy metabolism in vitro and in mm. In the first chapter, Lust et al. describe the various methods available for the appropriate fixation of brain tissue necessary for the study of cerebral energy metabolism. Different fixation methods are compared, and some concerns raised by the USDHHS in their guidelines for the care and use of laboratory animals are addressed. Specific fixation methods pertinent to the various measurements are also covered in other chapters. In vitro p- parations have, despite certain limitations, been found to be useful in the study of brain metabolism, since the biochemical envir- ment is amenable to rapid, controlled manipulation. The chapter by Lai and Clark describes methods for the isolation and characterization of metabolically active preparations of synaptic and non-synaptic mitochondria from brain, and studies of - zymes involved in glucose metabolism and glucose-derived neurotransmitter synthesis in these preparations are summarized. The chapter by Whittingham discusses methods of preparations of hippocampal slices for use in the study of energy metabolism. Measurement of glucose and of glycolytic and dicarboxylic acid cycle intermediates in neural tissues are described in the chapter by Bachelard.

Elsevier's Integrated Review Biochemistry

Elsevier's Integrated Review Biochemistry
Author: John W. Pelley, PhD
Publisher: Elsevier Health Sciences
Total Pages: 254
Release: 2011-11-30
Genre: Medical
ISBN: 0323074464
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Effectively merge basic science and clinical skills with Elsevier's Integrated Review Biochemistry, by John W. Pelley, PhD. This concise, high-yield title in the popular Integrated Review Series focuses on the core knowledge in biochemistry while linking that information to related concepts from other basic science disciplines. Case-based questions at the end of each chapter enable you to gauge your mastery of the material, and a color-coded format allows you to quickly find the specific guidance you need. Online access via www.studentconsult.com - included with your purchase - allows you to conveniently access the book's complete text and illustrations online as well as relevant content from other Student Consult titles. This concise and user-friendly reference provides crucial guidance for the early years of medical training and USMLE preparation. Spend more time reviewing and less time searching thanks to an extremely focused, "high-yield" presentation. Gauge your mastery of the material and build confidence with both case-based, andUSMLE-style questions that provide effective chapter review and quick practice for your exams. Access the full contents online at www.studentconsult.com where you'll find the complete text and illustrations, "Integration Links" to bonus content in other Student Consult titles, an interactive community center with a wealth of additional resources, and much more! Grasp and retain vital concepts more easily thanks to a color-coded format, succinct,text, key concept boxes, and dynamic illustrations that facilitate learning in a highly visual approach. Effectively review for problem-based courses with the help of text boxes that help you clearly see the clinical relevance of the material. Great for visual learners!

Brain Energy Metabolism

Brain Energy Metabolism
Author: Johannes Hirrlinger
Publisher: Humana Press
Total Pages: 0
Release: 2014-09-16
Genre: Medical
ISBN: 9781493910588
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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.