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Author: C. J. Pycock
Publisher: Springer Science & Business Media
ISBN: 1461597781
Category : Science
Languages : en
Pages : 206
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Book Description
The concept of chemical transmission in the central nervous system has taken some time to be generally accepted, but an increasing number of compounds are now being recognized as hav ing a transmitter role in the brain. The acetylcholine system was the first to be discovered in the periphery and its charac teristic features of storage of transmitter in vesicles in the nerve terminal, its electrically-evoked release and rapid extra neuronal breakdown were considered to be necessary criteria for any neurotransmitter candidate. The subsequent elucidation of the noradrenergic system made it apparent that rapid enzymatic breakdown was not essential for a released transmitter, and the possibility of high-affinity re-uptake processes became establ ished as an alternative means of terminating the synaptic actions of a transmitter. With the eventual acceptance of the amino acids as excitat ory or inhibitory transmitters, the requirement for a transmit ter to be present in a low concentration overall (although locally concentrated in specific terminals) also had to be discarded. This necessitated the additional concept of specif ic metabolic pools with different functions being located in different cells or within different regions of the same cell. Some localization of glutamate and aspartate remote from excit able membranes is clearly essential since their overall brain concentrations would be sufficient to maximally depolarize the majority of neurones in the brain. The concept of separate metabolic pools has been supported by stUdies on turnover rate (see Chapter 5).
Author: C. J. Pycock
Publisher: Springer Science & Business Media
ISBN: 1461597781
Category : Science
Languages : en
Pages : 206
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Book Description
The concept of chemical transmission in the central nervous system has taken some time to be generally accepted, but an increasing number of compounds are now being recognized as hav ing a transmitter role in the brain. The acetylcholine system was the first to be discovered in the periphery and its charac teristic features of storage of transmitter in vesicles in the nerve terminal, its electrically-evoked release and rapid extra neuronal breakdown were considered to be necessary criteria for any neurotransmitter candidate. The subsequent elucidation of the noradrenergic system made it apparent that rapid enzymatic breakdown was not essential for a released transmitter, and the possibility of high-affinity re-uptake processes became establ ished as an alternative means of terminating the synaptic actions of a transmitter. With the eventual acceptance of the amino acids as excitat ory or inhibitory transmitters, the requirement for a transmit ter to be present in a low concentration overall (although locally concentrated in specific terminals) also had to be discarded. This necessitated the additional concept of specif ic metabolic pools with different functions being located in different cells or within different regions of the same cell. Some localization of glutamate and aspartate remote from excit able membranes is clearly essential since their overall brain concentrations would be sufficient to maximally depolarize the majority of neurones in the brain. The concept of separate metabolic pools has been supported by stUdies on turnover rate (see Chapter 5).
Author: Israel Hanin
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 270
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Book Description
Author: Institute of Medicine
Publisher: National Academies Press
ISBN: 030905088X
Category : Medical
Languages : en
Pages : 560
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Book Description
The physiological or psychological stresses that employees bring to their workplace affect not only their own performance but that of their co-workers and others. These stresses are often compounded by those of the job itself. Medical personnel, firefighters, police, and military personnel in combat settingsâ€"among othersâ€"experience highly unpredictable timing and types of stressors. This book reviews and comments on the performance-enhancing potential of specific food components. It reflects the views of military and non-military scientists from such fields as neuroscience, nutrition, physiology, various medical specialties, and performance psychology on the most up-to-date research available on physical and mental performance enhancement in stressful conditions. Although placed within the context of military tasks, the volume will have wide-reaching implications for individuals in any job setting.
Author: Neville N. Osborne
Publisher: Elsevier
ISBN: 1483145530
Category : Science
Languages : en
Pages : 374
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Book Description
Biochemistry of Characterised Neurons provides a report on the progress made in the analysis of the biology of specific neurons in the central nervous system. This book emphasizes the biochemical, morphological, and functional aspects of characterized neurons, including ways and sophisticated techniques of isolating them. This publication is divided into 11 chapters. The first chapter evaluates the relevance of working with single neurons. Chapters 2 to 6 discuss specific, characterized, invertebrate neurons containing one of the putative neurotransmitter substances. Chapter 7 deals with the biochemistry of a unique vertebrate (Torpedo) cholinergic system that enables pure cholinergic neuronal cell bodies and endings to be analyzed separately. The sensitive radiochemical procedures used to analyze transmitter substances and transmitter enzymes, and how they can be adapted to map the distribution of transmitters in individual neurons of Aplysia, are discussed in Chapter 8. Chapter 9 describes methods for the analysis of specific cells in the retina, while Chapters 10 and 11 focus on the analysis of proteins within defined neurons. This text is beneficial to biochemists and students interested in analyzing neurons.
Author: Christopher Pittenger
Publisher: Oxford University Press
ISBN: 0190228164
Category : Medical
Languages : en
Pages : 777
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Book Description
Obsessive-compulsive disorder (OCD) affects one person in 40 and can cause great suffering. This volume provides the first comprehensive summary of our understanding of this enigmatic condition, summarizing current work ranging from genetics and neurobiology through cognitive psychology, treatment, personal experiences, and societal implications.
Author: Leslie A. Pray
Publisher:
ISBN: 9780309297493
Category : Health & Fitness
Languages : en
Pages : 0
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Book Description
Caffeine in Food and Dietary Supplements is the summary of a workshop convened by the Institute of Medicine in August 2013 to review the available science on safe levels of caffeine consumption in foods, beverages, and dietary supplements and to identify data gaps. Scientists with expertise in food safety, nutrition, pharmacology, psychology, toxicology, and related disciplines; medical professionals with pediatric and adult patient experience in cardiology, neurology, and psychiatry; public health professionals; food industry representatives; regulatory experts; and consumer advocates discussed the safety of caffeine in food and dietary supplements, including, but not limited to, caffeinated beverage products, and identified data gaps. Caffeine, a central nervous stimulant, is arguably the most frequently ingested pharmacologically active substance in the world. Occurring naturally in more than 60 plants, including coffee beans, tea leaves, cola nuts and cocoa pods, caffeine has been part of innumerable cultures for centuries. But the caffeine-in-food landscape is changing. There are an array of new caffeine-containing energy products, from waffles to sunflower seeds, jelly beans to syrup, even bottled water, entering the marketplace. Years of scientific research have shown that moderate consumption by healthy adults of products containing naturally-occurring caffeine is not associated with adverse health effects. The changing caffeine landscape raises concerns about safety and whether any of these new products might be targeting populations not normally associated with caffeine consumption, namely children and adolescents, and whether caffeine poses a greater health risk to those populations than it does for healthy adults. This report delineates vulnerable populations who may be at risk from caffeine exposure; describes caffeine exposure and risk of cardiovascular and other health effects on vulnerable populations, including additive effects with other ingredients and effects related to pre-existing conditions; explores safe caffeine exposure levels for general and vulnerable populations; and identifies data gaps on caffeine stimulant effects.
Author: Christopher J. Pycock
Publisher: University Park Press
ISBN: 9780839116448
Category : Neurotransmitters
Languages : en
Pages : 197
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Book Description
Author: Yogesh Dwivedi
Publisher: CRC Press
ISBN: 143983881X
Category : Medical
Languages : en
Pages : 485
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Book Description
With recent studies using genetic, epigenetic, and other molecular and neurochemical approaches, a new era has begun in understanding pathophysiology of suicide. Emerging evidence suggests that neurobiological factors are not only critical in providing potential risk factors but also provide a promising approach to develop more effective treatment and prevention strategies. The Neurobiological Basis of Suicide discusses the most recent findings in suicide neurobiology. Psychological, psychosocial, and cultural factors are important in determining the risk factors for suicide; however, they offer weak prediction and can be of little clinical use. Interestingly, cognitive characteristics are different among depressed suicidal and depressed nonsuicidal subjects, and could be involved in the development of suicidal behavior. The characterization of the neurobiological basis of suicide is in delineating the risk factors associated with suicide. The Neurobiological Basis of Suicide focuses on how and why these neurobiological factors are crucial in the pathogenic mechanisms of suicidal behavior and how these findings can be transformed into potential therapeutic applications.
Author: Davide Martino
Publisher: Oxford University Press
ISBN: 0197543219
Category : Medical
Languages : en
Pages : 577
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Book Description
Tourette syndrome (TS) has become increasingly recognised within society and has gained scientific interest worldwide. Knowledge of its clinical presentation, mechanisms of disease, and available treatment approaches has increased remarkably over the last two decades. Likewise, the way clinicians, teachers, social care workers, and families face the problems manifested by patients with TS is rapidly evolving. Tourette Syndrome, edited by Davide Martino and James F. Leckman, offers a unique opportunity to capture this knowledge advance through a comprehensive and up-to-date overview. Tourette Syndrome covers all the main aspects related to TS, analyzing its complex clinical presentation, the novel viewpoints of causes and mechanisms, state-of-the-art assessment techniques, and the diversity of treatment options. Multidisciplinarity is the main asset of this volume, which represents a source of consultation for a wide audience of professionals, integrated with video tutorials related to particularly complex areas of patient management. Medical and PhD students, as well as post-doctoral scientists, will be able to use the volume as a valuable learning source.
Author: S. Charles Schulz
Publisher: Oxford University Press
ISBN: 019937807X
Category : Medical
Languages : en
Pages : 401
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Book Description
Schizophrenia and Psychotic Spectrum Disorders aims to engage young caregivers in psychiatry, psychology, nursing and social work so that they will be able to become well informed about this significant--and at times confusing--illness. Because schizophrenia is considered to be one of the most complicated and severe psychiatric disorders, this book has the goal of summarizing key issues of the illness, such as its presentation, frequency and age of onset, and diagnostic characteristics. It also contains informative chapters about the pathophysiology of schizophrenia, ranging from brain development issues, genetics, and likely abnormalities in neurotransmitters. This book will give young professionals and those joining the field an excellent and accessible background to treatment. In this area, Schizophrenia and Psychotic Spectrum Disorders provides a comprehensive approach to diagnosis, treatment initiation, strategies for non-response, approaches of therapy, and importantly, ways to provide family therapy and support.
