Development of the Hypothalamus

Development of the Hypothalamus PDF

Author: Gonzalo Alvarez-Bolado

Publisher: Frontiers Media SA

Published: 2015-08-06

Total Pages: 266

ISBN-13: 2889196348

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The hypothalamus is the region of the brain in charge of the maintenance of the internal milieu of the organism. It is also essential to orchestrate reproductive, parental, aggressive-defensive, and other social behaviors, and for the expression of emotions. Due to the structural complexity of the hypothalamus, however, many basic aspects of its ontogenesis are still mysterious. Nowadays we assist to a renewal of interest spurred in part by the growing realization that prenatal and early postnatal influences on the hypothalamus could entail pathological conditions later in life. Intriguing questions for the future include: do early specification phenomena reflect on adult hypothalamic function and possibly on some kinds of behavior? Can early events like specification, migration or formation of nuclei influence adult hypothalamic function? A change in morphological paradigm, from earlier columnar interpretations to neuromeric ones, is taking place. Concepts long taken for granted start to be challenged in view of advances in developmental and comparative neurobiology, and notably also in the molecular characterization of hypothalamic structures. How should we understand the position of the hypothalamus in relation to other brain regions? Should we bundle it together with the thalamus, a functionally, genetically and developmentally very different structure? Does the classic concept of “diencephalon” make sense, or should the hypothalamus be separated? Does the preoptic area belong to the hypothalamus or the telencephalon? The answer to these questions in the context of recent causal molecular analysis will help to understand hypothalamic evolution and morphogenesis as well as its adult function and connectivity. In this Research Topic we have reviewed the fundamentals of hypothalamic ontogenesis and evolution, summarizing present-day knowledge, taking stock of the latest advances, and anticipating future challenges.

Development of the Hypothalamus

Development of the Hypothalamus PDF

Author: Stuart A. Tobet

Publisher: Biota Publishing

Published: 2013-03-01

Total Pages: 85

ISBN-13: 1615045139

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The involvement of key factors operating independently or in cooperation with others contributes to physical and physiological mechanisms to help engineer a vertebrate hypothalamus. The actions of these key factors influence developmental mechanisms including neurogenesis, cell migration, cell differentiation, cell death, axon guidance, and synaptogenesis. On a molecular level, there are several ways to categorize the actions of factors that drive brain development. These range from the actions of transcription factors in cell nuclei that regulate the expression of developmental genes, to external factors in the cellular environment that mediate interactions and cell placements, and to effector molecules that contribute to signaling from one cell to another. Sexual dimorphism is a hallmark of the vertebrate hypothalamus that may arise as a direct consequence of hormone actions or gene actions. These actions may work through any of the mechanisms outlined above. Given the arrangement of cells in groups within the hypothalamus, cell migration may be one particularly important target for early molecular actions that help build the bases for appropriate functions.

Developmental Neuroendocrinology

Developmental Neuroendocrinology PDF

Author: Susan Wray

Publisher: Springer Nature

Published: 2020-05-02

Total Pages: 469

ISBN-13: 3030400026

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In this book, experts in the field discuss the latest research in developmental neuroendocrinology. Given that the hypothalamus is the center of neuroendocrine activity, the reader will learn about the molecular specification of hypothalamic cells, developmental modulators and epigenetic factors influencing hypothalamic development, and the development of neuroendocrine circuits. Each chapter provides a concise review of the current and future perspectives in developmental neuroendocrinology. Important insights into state-of-the-art techniques applied to functional circuit tracking, lineage tracing of hypothalamic cells, and the identification of genes altered through epigenetic mechanisms are also provided. Given its scope, the book will appeal to all students and researchers who are eager to understand the processes involved in hypothalamus development and the establishment of neuroendocrine circuits. This is the ninth volume in the International Neuroendocrine Federation (INF) Masterclass in Neuroendocrinology series* that aims to illustrate highest standards and encourage the use of the latest technologies in basic and clinical research and hopes to provide inspiration for further exploration into the exciting field of neuroendocrinology. *Volumes 1-7 published by Wiley.

The Heart of the Brain

The Heart of the Brain PDF

Author: Gareth Leng

Publisher: MIT Press

Published: 2024-04-30

Total Pages: 277

ISBN-13: 0262551934

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How hormonal signals in one small structure of the brain—the hypothalamus—govern our physiology and behavior. As human beings, we prefer to think of ourselves as reasonable. But how much of what we do is really governed by reason? In this book, Gareth Leng considers the extent to which one small structure of the neuroendocrine brain—the hypothalamus—influences what we do, how we love, and who we are. The hypothalamus contains a large variety of neurons. These communicate not only through neurotransmitters, but also through peptide signals that act as hormones within the brain. While neurotransmitter signals tend to be ephemeral and confined by anatomical connectivity, the hormone signals that hypothalamic neurons generate are potent, wide-reaching, and long-lasting. Leng explores the evolutionary origins of these remarkable neurons, and where the receptors for their hormone signals are found in the brain. By asking how the hypothalamic neurons and their receptors are regulated, he explores how the hypothalamus links our passions with our reason. The Heart of the Brain shows in an accessible way how this very small structure is very much at the heart of what makes us human.

The Human Hypothalamus

The Human Hypothalamus PDF

Author: Dick F. Swaab

Publisher: Elsevier

Published: 2021-07-04

Total Pages: 570

ISBN-13: 0128206845

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The Human Hypothalamus: Neuroendocrine Disorders, Volume 181 in the Handbook of Clinical Neurology series, provides comprehensive summaries of recent research on the brain and nervous system as they relate to clinical neurology. This volume summarizes the role of the hypothalamus in neuroendocrine disorders, identifying the mechanism of action, disorder etiology, and best practices for assessment and treatment. Disorders covered include pituitary hypothalamic disorders of development and growth, hypothalamic tumor related disorders, hypothalamic autoimmune disorders and infection, disorders of vasopressin, water and sodium homeostasis, eating disorders, and gonadotropic hormone regulation disorders. Discusses the importance of the hypothalamus in human growth and development Reviews hypothalamic related tumors, as well as pituitary, autoimmune, vasopressin and hormone regulation disorders Includes metabolic and eating disorders Identifies mechanisms of disease action and etiology Provides best practice information for assessment and treatment

The Human Hypothalamus

The Human Hypothalamus PDF

Author: Dick F. Swaab

Publisher: Elsevier

Published: 2021-06-15

Total Pages: 544

ISBN-13: 0128199768

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The Hypothalamus is an important area of the brain for understanding a variety of neurological disorders. This volume summarizes for readers the anatomy and physiology of the anterior hypothalamus, to better understand pathology and treatment of hypothalamus related disorders. In addition to anatomy and physiology in humans, cytoarchitecture and chemoarchitecture in rodents is provided. The volume explores the role of the hypothalamus in disorders of eating, sleeping, anxiety, and mood, as well as its role in sexual behavior and gender identity. Coverage includes how Parkinson’s, Alzheimer’s and other neurological disorders relate to the hypothalamus. Reviews the anatomy and physiology of the anterior hypothalamus Provides cytoarchitecture and chemoarchitecture from rodents Discusses hypothalamic related disorders of eating, sleeping, anxiety, and mood Covers how Parkinson’s, Alzheimer’s and other neurological disorders relate to the hypothalamus Explores the role of the hypothalamus in sexual behavior and gender identity

Basic Physiology for Anaesthetists

Basic Physiology for Anaesthetists PDF

Author: David Chambers

Publisher: Cambridge University Press

Published: 2019-07-25

Total Pages: 469

ISBN-13: 1108463991

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Easily understood, up-to-date and clinically relevant, this book provides junior anaesthetists with an essential physiology resource.

The Orexin System. Basic Science and Role in Sleep Pathology

The Orexin System. Basic Science and Role in Sleep Pathology PDF

Author: M.A. Steiner

Publisher: Karger Medical and Scientific Publishers

Published: 2021-05-28

Total Pages: 165

ISBN-13: 3318068446

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The orexin system, discovered in 1998, has emerged as a crucial player in regulating the sleep and wake balance inside our brain. This discovery has sparked a burst of novel and dynamic research on the physiology and pathology of sleep. The Orexin System: Basic Science and Role in Sleep Pathology honors this research and the authors share their ideas and perspectives on the novel developments within the field. The book examines the intricate role of the orexin system in regulating sleep and wake, and its interaction with other wake-regulating systems. The orexin system is dissected at the cellular and molecular level to explore the diversity of the orexin-producing neurons, their projections, and their signaling pathways. Additionally, the book discusses the diseases which are associated with a dysfunctional orexin system, such as narcolepsy, insomnia, substance abuse, and Alzheimer’s disease, and explores the new potential therapeutic applications derived from the burst of research around this fascinating system. This publication is essential reading for neurobiologists, neurologists, psychopharmacologists, sleep researchers, and other researchers and clinical scientists interested in sleep, sleep research, insomnia, and medicine in general.