Gnrh The Master Molecule Of Reproduction

Gonadotropin-releasing hormone (GnRH) cells are the key regulators of reproductive function in all vertebrate organisms. The GnRH molecule is synthesized in a small number of neurons in rostral hypothalamic regions of the brain. In mammals, these neurons release the GnRH decapeptide into the portal capillary system leading to the anterior pituitary gland. There, GnRH causes the release of the gonadotropins, luteinizing hormone (LH) and follicle-stimulating hormone (FSH), which in turn act upon the gonads to stimulate their maturation, and to cause synthesis of sex steroid hormones, estrogen, progesterone and testosterone. Although each of the levels of the hypothalamic-pituitary-gonadal axis is critical for reproductive function, GnRH neurons play the primary role in the control of reproductive maturation and adult reproductive function, and may even play a role in reproductive senescence. Since its discovery in 1970, there has been intense interest in GnRH-producing neurons, with more than 8000 papers and chapters in the last decade alone. Despite this activity of research in basic and clinical science, there has never been a book written specifically on GnRH neurons. GnRH: The Master Molecule of Reproduction aims to bring together the large and diverse literature of both laboratory and applied research that focuses on these unique cells. This book will provide basic background into reproductive neuroendocrinology, as well as specifics regarding the role of GnRH neurons in the control of reproduction. Students studying endocrinology, reproduction, neuroendocrinology or molecular endocrinology will benefit from this book. In addition, this book will take a multi-species approach which will be useful both to basic researchers as well as clinicians. Whenever possible, species differences and similarities will be presented, and if possible, studies on humans, or the clinical relevance of basic research findings to humans will be discussed (such as the treatment of reproductive disorders such as abnormalities in pubertal development, or infertility).

This volume summarizes the evolution and physiology of GnRH molecules and receptors, and provides insight as to how social behavior influences cellular and molecular events in the brain from a comparative perspective. The chapters in this volume are divided into three major sections: Development and Cell Migration, GnRH Receptors, Physiology and Regulation. The review papers arose primarily from presentations made at the Second International Symposium on the Comparative Biology of GnRH, held in Penang, Malaysia, June 2-4, 2001; a satellite symposium in conjunction with the XIV International Congress of Comparative Endocrinology, Sorrento, Italy. In addition, leading neuroscientists doing cutting-edge research in the field of GnRH were invited as authors to make this volume a valuable reference.

The Encyclopedia of the Neuroscience explores all areas of the discipline in its focused entries on a wide variety of topics in neurology, neurosurgery, psychiatry and other related areas of neuroscience. Each article is written by an expert in that specific domain and peer reviewed by the advisory board before acceptance into the encyclopedia. Each article contains a glossary, introduction, a reference section, and cross-references to other related encyclopedia articles. Written at a level suitable for university undergraduates, the breadth and depth of coverage will appeal beyond undergraduates to professionals and academics in related fields.

Thoroughly updated to reflect today's recent advances in adult and pediatric endocrinology, DeGroot’s Endocrinology, 8th Edition, remains the comprehensive, international reference of choice for today’s endocrinologists and fellows. A full peer review of the previous edition, conducted by a largely new group of renowned editors, was used to update this trusted, two-volume resource. In-depth coverage of both basic and clinical aspects of endocrinology and up-to-date information on the treatment and management of endocrine disorders are provided by a diverse group of expert contributors from six continents. A full-color format and helpful algorithms summarize clinical decision-making and practical approaches to patient management. Organizes content by all the glands that regulate the endocrine system while integrating basic science and clinical presentations of disease. Includes new chapters: Anatomy and Physiology of the Hypothalmus and Pituitary, Differentiated Thyroid Cancer, Medullary Thyroid Cancer, Drugs that Affect Thyroid Function, Genetic Disorders of the Adrenal Cortex, Adrenal Pathology, Primary Aldosteronism, Transgender Healthcare, Erectile Dysfunction, Prevalence and Causes of Male Infertility, Sexual Dysfunction in the Female, Glucose Toxicity and Oxidative Stress. Emphasizes basic science and evidence-based practice throughout. Features extensive updates to content on thyroid and adrenal disfunction, endocrine-disrupting chemicals and human disease, clinical management of diabetes, and advances in genetics. Includes algorithms to outline effective treatment protocols. Contains new emphasis boxes that highlight key points in each chapter.

How to decelerate loss of global biodiversity is one of the greatest challenges of our generation. Reproductive technologies have enormous potential to assist the recovery of species by enhancing reproductive output, facilitating genetic management, and supporting reintroduction of threatened species. Of particular value are cryopreservation technologies coupled with the establishment of global gene banks to conserve, in perpetuity, the remaining extant genetic diversity of threatened amphibians. Reproductive Technologies and Biobanking for the Conservation of Amphibians brings together leading experts in the field to provide a comprehensive overview of current best practices, summarise technological advancements, and present a framework for facilitating the integration of reproductive technologies and biobanking into conservation breeding programs for threatened amphibians. It is an invaluable reference for the next generation of conservation practitioners: captive breeding facilities, researchers, and policy-makers involved with biodiversity conservation.

The Handbook of Models for Human Aging is designed as the only comprehensive work available that covers the diversity of aging models currently available. For each animal model, it presents key aspects of biology, nutrition, factors affecting life span, methods of age determination, use in research, and disadvantages/advantes of use. Chapters on comparative models take a broad sweep of age-related diseases, from Alzheimer's to joint disease, cataracts, cancer, and obesity. In addition, there is an historical overview and discussion of model availability, key methods, and ethical issues. Utilizes a multidisciplinary approach Shows tricks and approaches not available in primary publications First volume of its kind to combine both methods of study for human aging and animal models Over 200 illustrations

Hormones, Brain, and Behavior, Second Edition is a comprehensive work discussing the effect of hormones on the brain and, subsequently, behavior. This major reference work has 109 chapters covering a broad range of topics with an extensive discussion of the effects of hormones on insects, fish, amphibians, birds, rodents, and humans. To truly understand all aspects of our behavior, we must take every influence (including the hormonal influences) into consideration. Donald Pfaff and a number of well-qualified editors examine and discuss how we are influenced by hormonal factors, offering insight, and information on the lives of a variety of species. Hormones, Brain, and Behavior offers the reader comprehensive coverage of growing field of research, with a state-of-the-art overview of hormonally-mediated behaviors. This reference provides unique treatment of all major vertebrate and invertebrate model systems with excellent opportunities for relating behavior to molecular genetics. The topics cover an unusual breadth (from molecules to ecophysiology), ranging from basic science to clinical research, making this reference of interest to a broad range of scientists in a variety of fields. Available online exclusively via ScienceDirect. A limited edition print version is also available. Comprehensive coverage of a growing field of research Unique treatment of all major vertebrate and invertebrate model systems with excellent opportunites for relating behavior to molecular genetics Covers an unusual breadth ranging from molecules to ecophysiology, and from basic science to clinical research

On Rheostasis describes several examples of physiological changes most species of animals will experience in their lifetime, such as daily rhythms, reproductive cycles, and infection induced fevers. These naturally occurring events are a major challenge to the basic understanding of how bodies maintain a healthy, internal working environment. The book uses new research to highlight that our internal state is regulated by different physiological processes.