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Adult Neurogenesis and Neural Stem Cells in Mammals

Author: Philippe Taupin

Publisher: Nova Publishers

Published: 2006

Total Pages: 222

ISBN-13: 9781594548567

This title contains a book and CD. The brain has a number of nerve cells estimated at a magnitude of 10 to 100 billion, and 1014 to 1015 synapses, and therefore is the most complex organ of the human body. During fetal development the foundations of the brain are laid as billions of neurons form appropriate connections and patterns. In the adult mammalian brain, most neurons are post-mitotic, and therefore at risk for irreversible damage. As we age, atrophy of the brain occurs. As brain weight declines the volume of the brain in the 8th decade is reduced by 6 per cent -10 per cent versus the third decade, and neuronal loss occurs, up to 10,000 to 100,000 neurons are lost per day, though this estimation is being revised downward with the advance of more sophisticated measurements.

Endogenous Stem Cell-Based Brain Remodeling in Mammals

Author: Marie-Pierre Junier

Publisher: Springer Science & Business Media

Published: 2014-02-08

Total Pages: 234

ISBN-13: 1489973990

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This text highlights the endogenous regenerative potential of the central nervous system in neonates and juveniles and discusses possible ways it might be manipulated for medical purposes. The first section provides a descriptive summary of the salient steps of human brain development with a discussion of comparisons with other mammalian brains. It also provides a historical perspective on our understanding of ongoing brain development throughout the lifespan and serve to introduce the concept of brain plasticity following injury. The second part is devoted to the endogenous reparative potential of the brain, including its limitations, and articles focusing on defined pathologies (e.g. anoxia/hypoxia, epilepsy, traumatic brain injury and stress) in animal models and in humans pinpoint eventual ways these pathologies might be manipulated. The third and final focuses on the "dark side" of stem cells for brain repair or of the manipulation of spontaneous adaptive events after injury (e.g. genomic instability, sensitization to cancerous transformation and defective neural networks).

Adult Neurogenesis in the Hippocampus

Author: Juan J. Canales

Publisher: Academic Press

Published: 2016-03-23

Total Pages: 300

ISBN-13: 0128019921

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Neurogenesis in the adult brain has emerged as one of the most dynamic and rapidly moving fields in modern neuroscience research. The implications of adult neurogenesis for health and well-being are wide-ranging, with findings in this area having distinct relevance for treatment and rehabilitation in neurology and psychopathology. Adult Neurogenesis in the Hippocampus addresses these implications by providing an up-to-date account on how neurogenesis in the adult hippocampus contributes to critical psychological and physiological processes, such as learning and memory, and how it is modified by life experiences, such as aging, environmental enrichment, exercise, and dieting. The book also provides the most current reviews of how adult hippocampal neurogenesis influences the pathogenesis of mood disorders, addiction, and key neurological disorders. This book is the ideal resource for researchers and advanced graduates seeking focused knowledge on the role of adult neurogenesis in brain health and disease. Provides a unique overview of how adult hippocampal neurogenesis contributes to adaptive processes, brain psychopathology, and disease Includes state-of-the-art reviews by leading world experts in adult neurogenesis

Neural Stem Cells

Author: Luca Bonfanti

Publisher: BoD – Books on Demand

Published: 2013-04-24

Total Pages: 432

ISBN-13: 9535110691

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Twenty years after the discovery of neural stem cells, the question whether the central nervous system can be considered among regenerative tissues is still open. On one side, deep characterization of neural stem and progenitor cells, their niches, and their progeny in brain neurogenic sites overtly showed that new neurons can be generated in the brain of adult mammals, including humans. On the other side, many problems arise when stem cells encounter the mature brain parenchyma, still hampering the development of efficacious therapeutic approaches with endogenous or exogenously-delivered neural stem cells. This book tries to make the point on these extremely promising, yet unresolved, issues.

Identification and Characterization of Neural Progenitor Cells in the Adult Mammalian Brain

Author: Sara Gil-Perotín

Publisher: Springer Science & Business Media

Published: 2009-04-21

Total Pages: 110

ISBN-13: 3540887199

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Adult neurogenesis has been questioned for many years. In the early 1900s, a dogma was established that denied new neuron formation in the adult brain. In the last century however, new discoveries have demonstrated the real existence of proliferation in the adult brain, and in the last decade, these studies led to the identification of neural stem cells in mammals. Adult neural stem cells are undifferentiated cells that are present in the adult brain and are capable of dividing and differentiating into glia and new neurons. Newly formed neurons terminally differentiate into mature neurons in the olfactory bulb and the dentate gyrus of the hippocampus. Since then, a number of new research lines have emerged whose common objective is the phenotypical and molecular characterization of brain stem cells. As a result, new therapies are successfully being applied to animal models for certain neurodegenerative diseases or stroke. At present, and in years to come, this finding extends to the adult human brain, and gives reason and hope to all the previous studies.

Adult neurogenesis twenty years later: physiological function versus brain repair

Author: Paolo Peretto

Publisher: Frontiers Media SA

Published: 2015-05-01

Total Pages: 121

ISBN-13: 2889194949

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The discovery that mammalian brains contain neural stem cells which perform adult neurogenesis - the production and integration of new neurons into mature neural circuits - has provided a fully new vision of neural plasticity. On a theoretical basis, this achievement opened new perspectives for therapeutic approaches in restorative and regenerative neurology. Nevertheless, in spite of striking advancement concerning the molecular and cellular mechanisms which allow and regulate the neurogenic process, its exploitation in mammals for brain repair strategies remains unsolved. In non-mammalian vertebrates, adult neurogenesis also contributes to brain repair/regeneration. In mammals, neural stem cells do respond to pathological conditions in the so called "reactive neurogenesis", yet without substantial regenerative outcome. Why, even in the presence of stem cells in the brain, we lack an effective reparative outcome in terms of regenerative neurology, and which factors hamper the attainment of this goal? Essentially, what remains unanswered is the question whether (and how) physiological functions of adult neurogenesis in mammals can be exploited for brain repair purposes.

Neurogenesis in the Adult Brain I

Author: Tatsunori Seki

Publisher: Springer Science & Business Media

Published: 2011-06-15

Total Pages: 415

ISBN-13: 4431539336

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The discovery of adult neurogenesis caused a paradigm shift in the neurosciences. For more than 100 years, it was believed that adult neurons do not regenerate. Joseph Altman and Fernando Nottebohm found proof to the contrary and changed the course of history. Their research, included here, provides the foundations of the field. Today, adult neurogenesis is a rapidly expanding discipline applicable to the study of brain development and diseases, learning and memory, aging, and neuropsychiatric disorders. With multiple authors, the 27 chapters of this book contain the latest work in two volumes. The first presents the basic biology of adult neurogenesis in non-mammalian vertebrates and in the mammalian hippocampus and olfactory bulb, and the second discusses clinical implications and delves into adult neurogenesis and brain injury as well as neurodegenerative and neuropsychiatric pathologies. With details of the anatomy, physiology, and molecular biology of the two neurogenic brain regions, this book provides indispensable knowledge for many areas of neuroscience and for experimental and clinical applications of adult neurogenesis to brain therapy.

Adult Neurogenesis

Author: Gerd Kempermann

Publisher: Oxford University Press, USA

Published: 2006

Total Pages: 464

ISBN-13: 9780195179712

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The discovery of adult neurogenesis and of stem cells in the brain has changed our view of the mature brain. Though we now know that the adult brain can make new neurons, it normally does so only in two privileged regions, the olfactory bulb and the hippocampus. Yet stem cells, which have the potential to produce new neurons, can be found throughout the adult brain. So why does the brain not make wider use of its potential for neurogenesis? And what is the function of new neurons and of neural stem cells in areas where they occur? After all, the brain regenerates poorly and many neurological and psychiatric disorders are chronic because cell replacement has not taken place. This is the first comprehensive, integrated account of one of the most exciting areas of neuroscience. It begins with the historical background and discusses theories of adult neurogenesis and neural stem cell biology in the context of learning and memory processes as well as structural plasticity. It describes in detail neurogenesis in the adult hippocampus and olfactory system and then surveys the regulatory, functional, and comparative aspects, concluding with a chapter on the provocative hypotheses that link failing adult neurogenesis with such diseases as temporal lobe epilepsy, major depression, brain tumors, and dementias. For graduate students, investigators, and clinicians in the neurosciences, developmental biology, and stem cell research, this book is a unique resource that sifts through the evidence for exciting scientific ideas and fosters a realistic view of the therapeutic possibilities for the use of stem cells in the adult brain.

Adult Neurogenesis: Beyond Rats and Mice

Author: Luca Bonfanti

Publisher: Frontiers Media SA

Published: 2019-02-11

Total Pages: 238

ISBN-13: 2889457613

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Researchers working on adult neurogenesis have focused largely on inbred laboratory rodents. While this provides a strong advantage of restricting genetic variation in the group, it also narrows our perspective on adult neurogenesis as a biological phenomenon. Many unsolved issues and open questions cannot be resolved without the contribution of comparative studies spanning through widely different species: how did adult neurogenesis evolve, what is the link between adult neurogenesis and brain complexity, how do adult neurogenesis and animal behavior influence each other, how does adult neurogenesis contribute to brain plasticity, cognition and, possibly, repair, and how do experimental conditions affect adult neurogenesis. The main message from the comparative approach to adult neurogenesis is that the relative exclusive focus on laboratory rodents can result in a bias on how we think about this biological process.

Neurobiology of Chemical Communication

Author: Carla Mucignat-Caretta

Publisher: CRC Press

Published: 2014-02-14

Total Pages: 614

ISBN-13: 1466553413

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Intraspecific communication involves the activation of chemoreceptors and subsequent activation of different central areas that coordinate the responses of the entire organism—ranging from behavioral modification to modulation of hormones release. Animals emit intraspecific chemical signals, often referred to as pheromones, to advertise their presence to members of the same species and to regulate interactions aimed at establishing and regulating social and reproductive bonds. In the last two decades, scientists have developed a greater understanding of the neural processing of these chemical signals. Neurobiology of Chemical Communication explores the role of the chemical senses in mediating intraspecific communication. Providing an up-to-date outline of the most recent advances in the field, it presents data from laboratory and wild species, ranging from invertebrates to vertebrates, from insects to humans. The book examines the structure, anatomy, electrophysiology, and molecular biology of pheromones. It discusses how chemical signals work on different mammalian and non-mammalian species and includes chapters on insects, Drosophila, honey bees, amphibians, mice, tigers, and cattle. It also explores the controversial topic of human pheromones. An essential reference for students and researchers in the field of pheromones, this is also an ideal resource for those working on behavioral phenotyping of animal models and persons interested in the biology/ecology of wild and domestic species.