Ionic and Volume Changes in the Microenvironment of Nerve and Receptor Cells PDF Download
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Author: Eva Sykova
Publisher: Springer Science & Business Media
ISBN: 3642769373
Category : Medical
Languages : en
Pages : 177
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Book Description
Stability of the internal environment in which neuronal elements are situated is unquestionably an important prerequisite for the effective transmission of information in the nervous system. During the past decade our knowledge on the microenvironment of nerve cells has expanded. The conception that the microenvironment of neurones comprises a fluid with a relatively simple and stable composition is no longer accepted; the microenvironment is now envisaged as a dynamic structure whose composition, shape, and volume changes, thereby significantly influencing neuronal function and the trans mission of information in the nervous system. The modern conception of the neuronal microenvironment is based on the results of research over the last 20 years. The extracellular space (ECS) is comprehended not only as a relatively stable microenvironment containing neurones and glial cells (Bernard 1878), but also as a channel for communica tion between them. The close proximity of the neuronal elements in the CNS and the narrowness of the intercellular spaces provides a basis not only for interaction between the elements themselves, but also between the elements and their microenvironment. Substances which can cross the cell membranes can easily find their way through the microenvironment to adjacent cellular elements. In this way the microenvironment can assure non-synaptic com munication between the relevant neurones. Signalization can be coded by modulation of the chemical composition of the ECS in the vicinity of the cell membrane and does not require classic connection by axones, dendrites, and synapses.
Author: Eva Sykova
Publisher: Springer Science & Business Media
ISBN: 3642769373
Category : Medical
Languages : en
Pages : 177
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Book Description
Stability of the internal environment in which neuronal elements are situated is unquestionably an important prerequisite for the effective transmission of information in the nervous system. During the past decade our knowledge on the microenvironment of nerve cells has expanded. The conception that the microenvironment of neurones comprises a fluid with a relatively simple and stable composition is no longer accepted; the microenvironment is now envisaged as a dynamic structure whose composition, shape, and volume changes, thereby significantly influencing neuronal function and the trans mission of information in the nervous system. The modern conception of the neuronal microenvironment is based on the results of research over the last 20 years. The extracellular space (ECS) is comprehended not only as a relatively stable microenvironment containing neurones and glial cells (Bernard 1878), but also as a channel for communica tion between them. The close proximity of the neuronal elements in the CNS and the narrowness of the intercellular spaces provides a basis not only for interaction between the elements themselves, but also between the elements and their microenvironment. Substances which can cross the cell membranes can easily find their way through the microenvironment to adjacent cellular elements. In this way the microenvironment can assure non-synaptic com munication between the relevant neurones. Signalization can be coded by modulation of the chemical composition of the ECS in the vicinity of the cell membrane and does not require classic connection by axones, dendrites, and synapses.
Author:
Publisher:
ISBN:
Category : Electrodes, Ion selective
Languages : en
Pages : 167
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Book Description
Author: Kai Kaila
Publisher: John Wiley & Sons
ISBN: 9780471118381
Category : Medical
Languages : en
Pages : 694
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Book Description
"PH and Brain Function offers thorough coverage of this increasingly important area of research, beginning with the fundamental concepts, which include methodological and theoretical issues such as the measurement of pH and the concept of pH in neurobiology. It explores aspects of regulation and modulation of intracellular pH in brain cells, surveys the changes in pH that occur with neural activity and how these changes affect neural activity, and discusses the role of pH in the pathophysiology of neurological diseases." "pH and Brain Function is an important resource for researchers in all areas of neuroscience as well as cell biology and physiology." --Book Jacket.
Author: Peter R. Laming
Publisher: Cambridge University Press
ISBN: 9780521573689
Category : Medical
Languages : en
Pages : 448
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Book Description
This 1998 book discusses how neurons and glial cells interact with each other to influence behaviour.
Author: Helmut Kettenmann
Publisher: Oxford University Press, USA
ISBN: 0199794596
Category : Medical
Languages : en
Pages : 955
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Book Description
Neuroglia, the third edition, is the long-awaited revision of the most highly regarded reference volume on glial cells. This indispensable edition has been completely revised, greatly enlarged, and enhanced with four-color figures throughout, all in response to the tremendous amount of new information that has accumulated since the previous edition seven years ago. Glial cells are, without doubt, the new stars in the neuroscience and neurology communities. Neglected in research for years, it is now evident that the brain only functions in a concerted action of all the cells, namely glia and neurons. Seventy one chapters comprehensively discuss virtually every aspect of normal glial cell anatomy, physiology, biochemistry and function, and consider the central roles of these cells in neurological diseases including stroke, Alzheimer disease, multiple sclerosis, Parkinson's disease, neuropathy, and psychiatric conditions. More than 20 new chapters have been added to accommodate the unprecedented growth of knowledge about the basic biology of glia and the sophisticated manner in which they partner with neurons in the course of normal brain function. Lavishly illustrated and meticulously edited, the third edition remains the most convenient and maximally useful reference available. This new edition is an essential reference for both newcomers to the field as well as established investigators. Neuroglia belongs on every neuroscientist's bookshelf and will be a great asset for educators and neurological clinicians as well.
Author: Wolfgang Walz
Publisher: Springer Science & Business Media
ISBN: 1592591086
Category : Medical
Languages : en
Pages : 429
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Book Description
Leading neuroscience researchers offer a fresh perspective on neuronal function by examining all its many components-including their pertubation during major disease states-and relate each element to neuronal demands. Topics range from the dependency of neurons on metabolic supply, as well as on both ion and transmitter homeostasis, to their close interaction with the myelin sheath. Also addressed are the astrocytic signaling system that controls synaptic transmission, the extracellular matrix and space as communication systems, the role of blood flow regulation in neuronal demand and in blood-brain barrier function, and inflammation and the neuroimmune system. Insightful and integrative, The Neuronal Environment: Brain Homeostasis in Health and Disease demonstrates a clear new understanding that neurons do not work in isolation, that they need constant interactions with other brain components to process information, and that they are not the only information processing system in the brain.
Author: Vladimir Parpura
Publisher: Springer Science & Business Media
ISBN: 0387794921
Category : Medical
Languages : en
Pages : 701
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Book Description
Astrocytes were the original neuroglia that Ramón y Cajal visualized in 1913 using a gold sublimate stain. This stain targeted intermediate filaments that we now know consist mainly of glial fibrillary acidic protein, a protein used today as an astrocytic marker. Cajal described the morphological diversity of these cells with some ast- cytes surrounding neurons, while the others are intimately associated with vasculature. We start the book by discussing the heterogeneity of astrocytes using contemporary tools and by calling into question the assumption by classical neuroscience that neurons and glia are derived from distinct pools of progenitor cells. Astrocytes have long been neglected as active participants in intercellular communication and information processing in the central nervous system, in part due to their lack of electrical excitability. The follow up chapters review the “nuts and bolts” of ast- cytic physiology; astrocytes possess a diverse assortment of ion channels, neu- transmitter receptors, and transport mechanisms that enable the astrocytes to respond to many of the same signals that act on neurons. Since astrocytes can detect chemical transmitters that are released from neurons and can release their own extracellular signals there is an increasing awareness that they play physiological roles in regulating neuronal activity and synaptic transmission. In addition to these physiological roles, it is becoming increasingly recognized that astrocytes play critical roles during pathophysiological states of the nervous system; these states include gliomas, Alexander disease, and epilepsy to mention a few.
Author: Robert M. Coleman
Publisher: Nova Publishers
ISBN: 9781594544170
Category : Medical
Languages : en
Pages : 270
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Book Description
The brain is an enormously dynamic organ. Even when we sleep connections are made, signals sent and messages delivered. One of the key ways that the brain operates is via chemical stimuli which permits different parts of the brain to communicate between themselves and with the rest of the body. Determining what these chemicals, proteins and molecules are is an important way to not only discover how the brain works, but provide novel targets that may be useful in the treatment of disease, for instance in dealing with memory loss in dementia. This new book brings together international research in a broad range of topics, including molecular and cellular neurochemistry, neuropharmacology and genetic aspects of CNS function, neuroimmunology, metabolism, as well as the neurochemistry of neurological and psychiatric disorders of the CNS.
Author: Arne Ernst
Publisher: Springer Science & Business Media
ISBN: 3642801633
Category : Medical
Languages : en
Pages : 435
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Book Description
There is no question that the topic of this meeting in Seeheim, Germany, on intracranial and intralabyrinthine fluids is pertinent. This was the first international meeting at which these two closely-related topics were addressed together. Combining the clinical and research aspects of fluid and pressure regulation in the intracranial and the intralabyrint hine compartments as well as discussions on the clinical implications of abnormal fluid pressure was an excellent idea. The presentations and discussions of both the clinicians and basic scientists who participated proved that the concept of having such a combined focused gathering was both original and relevant. The two topics of the meeting in Seeheim have much in common. Maintaining both the intracranial pressure (lCP) and the intralabyrinthine pressure within normal limits is important for the normal functions of both the central nervous system and the ear. The intracranial space and the intralabyrinthine space are closed compartments that communicate with each other in an intricate manner. Deviations from normal intracranial pressure result in specific symptoms and signs. Medical problems related to elevated intracranial pressure vary from subtle to severe. Accumulated knowledge indicates that there are adverse effects from even relatively small elevations in ICP. Elevations in ICP may cause injuries to the brain and the ear. Abnormal pressure in the ear may cause abnormal function and injury. Maintaining the intracranial pressure within normal limits depends on a normally functioning pressure regulation.
Author: Jean de Vellis
Publisher: Springer Science & Business Media
ISBN: 1592591051
Category : Medical
Languages : en
Pages : 513
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Book Description
A distinguished panel of internationally recognized neuroscientists comprehensively review the involvement of and changes in glial cells both during the normal aging process and in the major disorders of old age. Topics range from the cellular and molecular changes that occur with aging-especially aging-associated activation of astrocytes and microglia and its relation to neuronal injury and repair-to neuron-glia intercommunication. The contributors show how glial signals may be modulated by hormones, growth factors, neurotransmitters, intracellular metabolism, and intercellular exchanges, as well as by aging of the blood-brain barrier.
