ACTH Action in the Adrenal Cortex: From Molecular Biology to Pathophysiology

ACTH Action in the Adrenal Cortex: From Molecular Biology to Pathophysiology PDF Author: Nicole Gallo-Payet
Publisher: Frontiers Media SA
ISBN: 2889452328
Category : ACTH.
Languages : en
Pages : 421

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Book Description
By stimulating adrenal gland and corticosteroid synthesis, the adrenocorticotropic hormone (ACTH) plays a central role in response to stress. In this Research Topic, a particular attention has been given to the recent developments on adrenocortical zonation; the growth-promoting activities of ACTH; the various steps involved in acute and chronic regulation of steroid secretion by ACTH, including the effect of ACTH on circadian rhythms of glucocorticoid secretion. The Research Topic also reviews progress and challenges surrounding the properties of ACTH binding to the MC2 receptor (MC2R), including the importance of melanocortin-2 receptor accessory protein (MRAP) in MC2R expression and function, the various intracellular signaling cascades, which involve not only protein kinase A, the key mediator of ACTH action, but also phosphatases, phosphodiesterases, ion channels and the cytoskeleton. The importance of the proteins involved in the cell detoxification is also considered, in particular the effect that ACTH has on protection against reactive oxygen species generated during steroidogenesis. The impact of the cellular microenvironment, including local production of ACTH is discussed, both as an important factor in the maintenance of homeostasis, but also in pathological situations, such as severe inflammation. Finally, the Research Topic reviews the role that the pituitary-adrenal axis may have in the development of metabolic disorders. In addition to mutations or alterations of expression of genes encoding components of the steroidogenesis and signaling pathways, chronic stress and sleep disturbance are both associated with hyperactivity of the adrenal gland. A resulting effect is increased glucocorticoid secretion inducing food intake and weight gain, which, in turn, leads to insulin and leptin resistance. These aspects are described in detail in this Research Topic by key investigators in the field. Many of the aspects addressed in this Research Topic still represent a stimulus for future studies, their outcome aimed at providing evidence of the central position occupied by the adrenal cortex in many metabolic functions when its homeostasis is disrupted. An in-depth investigation of the mechanisms underlying these pathways will be invaluable in developing new therapeutic tools and strategies.

ACTH Action in the Adrenal Cortex: From Molecular Biology to Pathophysiology

ACTH Action in the Adrenal Cortex: From Molecular Biology to Pathophysiology PDF Author: Nicole Gallo-Payet
Publisher: Frontiers Media SA
ISBN: 2889452328
Category : ACTH.
Languages : en
Pages : 421

Get Book Here

Book Description
By stimulating adrenal gland and corticosteroid synthesis, the adrenocorticotropic hormone (ACTH) plays a central role in response to stress. In this Research Topic, a particular attention has been given to the recent developments on adrenocortical zonation; the growth-promoting activities of ACTH; the various steps involved in acute and chronic regulation of steroid secretion by ACTH, including the effect of ACTH on circadian rhythms of glucocorticoid secretion. The Research Topic also reviews progress and challenges surrounding the properties of ACTH binding to the MC2 receptor (MC2R), including the importance of melanocortin-2 receptor accessory protein (MRAP) in MC2R expression and function, the various intracellular signaling cascades, which involve not only protein kinase A, the key mediator of ACTH action, but also phosphatases, phosphodiesterases, ion channels and the cytoskeleton. The importance of the proteins involved in the cell detoxification is also considered, in particular the effect that ACTH has on protection against reactive oxygen species generated during steroidogenesis. The impact of the cellular microenvironment, including local production of ACTH is discussed, both as an important factor in the maintenance of homeostasis, but also in pathological situations, such as severe inflammation. Finally, the Research Topic reviews the role that the pituitary-adrenal axis may have in the development of metabolic disorders. In addition to mutations or alterations of expression of genes encoding components of the steroidogenesis and signaling pathways, chronic stress and sleep disturbance are both associated with hyperactivity of the adrenal gland. A resulting effect is increased glucocorticoid secretion inducing food intake and weight gain, which, in turn, leads to insulin and leptin resistance. These aspects are described in detail in this Research Topic by key investigators in the field. Many of the aspects addressed in this Research Topic still represent a stimulus for future studies, their outcome aimed at providing evidence of the central position occupied by the adrenal cortex in many metabolic functions when its homeostasis is disrupted. An in-depth investigation of the mechanisms underlying these pathways will be invaluable in developing new therapeutic tools and strategies.

Cellular and Molecular Biology of the Adrenal Cortex

Cellular and Molecular Biology of the Adrenal Cortex PDF Author: José M. Saez
Publisher: John Libbey Eurotext
ISBN: 9780861963621
Category : Adrenal cortex
Languages : en
Pages : 348

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Book Description


Adrenal Disorders

Adrenal Disorders PDF Author: Alice C. Levine
Publisher: Humana Press
ISBN: 3319624709
Category : Medical
Languages : en
Pages : 340

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Book Description
This practical resource provides the latest evidence, management strategies and recommendations for the treatment of disorders of the adrenal glands, including related physiology, genetics and pharmacology. This book is divided into three thematic sections. The first covers adrenal physiology, presenting adrenal zonation and development, the regulation of steroidogenesis, and the pharmacology of glucocortisoids. Part two discusses the genetics and pathophysiology of a number of adrenal disorders, including autoimmune Addison’s disease, congenital adrenal hyperplasia, primary aldosteronism, adrenocortical tumors and hyperplasias, and pheochromocytomas and paragangliomas. The final section presents the latest diagnostic and management strategies for these disorders, addressing adrenal insufficiency, adrenal Cushing’s Syndrome and aldosteronism, among others. Over the past twenty years, our understanding of disorders of the adrenal glands has been altered and deepened. Providing a much-needed update to the literature, Adrenal Disorders: Physiology, Pathophysiology and Treatment will be an important resource for both academic and clinical endocrinologists working with the adrenal glands and managing patients with adrenal disorders.

The Hypothalamus-Pituitary-Adrenal Axis

The Hypothalamus-Pituitary-Adrenal Axis PDF Author:
Publisher: Elsevier
ISBN: 0080559360
Category : Science
Languages : en
Pages : 413

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Book Description
The hypothalamic-pituitary-adrenal axis controls reactions to stress and regulates various body processes such as digestion, the immune system, mood and sexuality, and energy usage. This volume focuses on the role it plays in the immune system and provides substantive experimental and clinical data to support current understanding in the field, and potential applications of this knowledge in the treatment of disease. Evidence presented in this book suggests that the nervous, endocrine, and immune systems form the Neuroendoimmune Supersystem, which integrates all the biological functions of higher organisms both in health and disease for their entire life cycle Contributors include both the scientists who initiated the work on the HPA axis and on the autonomic nervous system, and those who joined the field later

Adrenal Disorders

Adrenal Disorders PDF Author: Andrew N. Margioris
Publisher: Springer Science & Business Media
ISBN: 1592591019
Category : Medical
Languages : en
Pages : 420

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Book Description
In Adrenal Disorders, a panel of distinguished physicians and researchers select the most relevant new findings and integrate them into the existing body of clinical knowledge on adrenal pathologies. The book includes important reviews of disturbances in cortisol homeostasis, and new concepts regarding adrenal tumors and hereditary adrenal diseases. Also discussed are mineralocorticoids and the syndromes of mineralocortoid excess and aldosterone synthase deficiency. Authoritative and insightful, Adrenal Disorders provides physicians and scientists with a comprehensive, state-of-the-art practical guide to the devastating diseases of the adrenals that are so often difficult to diagnose and treat.

Disorders of the Human Adrenal Cortex

Disorders of the Human Adrenal Cortex PDF Author: Christa E. Flück
Publisher: Karger Medical and Scientific Publishers
ISBN: 3805585802
Category : Medical
Languages : en
Pages : 173

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Book Description
Substantial further advances in our understanding of adrenal development, steroid biosynthesis and adrenocortical disorders necessitate another look at this small but complex organ. In this volume, leaders in the fields of adrenal development, biochemistry and genetics review the most recent findings from bench and bedside research. New aspects of adrenal development and zonation and the novel 'backdoor' pathway to androgen synthesis are discussed. P450 oxidoreductase deficiency (a newly described form of congenital adrenal hyperplasia) and long-term outcome of prenatal treatment of 21-hydroxylase deficiency are examined. An update on ACTH resistance and adrenal Cushing's syndrome is provided. Finally, the role of adrenal steroidogenesis in arterial hypertension and fetal programming of adrenal androgen excess as a possible explanation for polycystic ovary syndrome in later life are analyzed. This book will be of great interest to pediatric, adult and reproductive endocrinologists, clinical geneticists, developmental biologists and basic scientists working in the fields of endocrinology and steroidogenesis.

The Human Adrenal Cortex

The Human Adrenal Cortex PDF Author: Alexander Munro Neville
Publisher: Springer
ISBN:
Category : Medical
Languages : en
Pages : 380

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Book Description


Molecular Mechanisms of Adrenal Steroidogenesis and Aspects of Regulation and Application

Molecular Mechanisms of Adrenal Steroidogenesis and Aspects of Regulation and Application PDF Author: Klaus Ruckpaul
Publisher: Taylor & Francis Group
ISBN:
Category : Medical
Languages : en
Pages : 268

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Book Description
One of a series of books which aim to provide overviews of the current state of the art by specialists actively working in the field. The editors aim to focus on the borderline of our knowledge by presenting innovative results and controversial ideas.

Glucocorticoid Signaling

Glucocorticoid Signaling PDF Author: Jen-Chywan Wang
Publisher: Springer
ISBN: 1493928953
Category : Science
Languages : en
Pages : 387

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Book Description
This timely volume provides a comprehensive overview of glucocorticoids and their role in regulating many aspects of physiology and their use in the treatment of disease. The book is broken into four sections that begin by giving a general introduction to glucocorticoids and a brief history of the field. The second section will discuss the effects of glucocorticoids on metabolism, while the third section will cover the effects of glucocorticoids on key tissues. The final section will discuss general topics, such as animal models in glucocorticoid research and clinical implications of glucocorticoid research. Featuring chapters from leaders in the field, this volume will be of interest to both researchers and clinicians.

Anxiety Disorders

Anxiety Disorders PDF Author: Kerry Ressler
Publisher: Oxford University Press
ISBN: 0199395144
Category : Medical
Languages : en
Pages : 529

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Book Description
Anxiety affects millions, manifesting as generalized anxiety disorder (GAD), obsessive compulsive disorder, panic disorder, phobias, post-traumatic-stress disorder (PTSD), and social anxiety disorder. Not only are anxiety disorders common, but they are also crippling, frequently co-occurring and predict high risk for depressive disorders. Shared mechanisms may explain the overlapping features of many anxiety disorders and account for associations with other highly-impairing conditions, such as major depression and substance use. Beyond risk for specific disorders, anxiety also predicts a number of other adverse outcomes, including suicidal behavior, medical problems, social, and economic difficulties. Conversely, disorder-specific mechanisms may also exist and explain the unique features of each syndrome. Thus, it is important to understand both shared and specific aspects of anxiety. The Primer on Anxiety Disorders provides early-stage practitioners and trainees, as well as seasoned clinicians and researchers, with need-to-know knowledge on diagnosis and treatment. Clinical cases are used throughout the book to enhance understanding of and illustrate specific disorders, comorbid conditions and clinical issues. To facilitate an integrative approach, content allows clinicians to understand patient characteristics and tailor interventions. The integrated approach of each chapter includes recent research on genetics and neuroscience to understand the mechanisms of anxiety disorders, focusing on the forthcoming new nosology in DSM-5. Chapters further integrate innovative advances in clinical research providing research on a range of discoveries regarding biomarkers of illness, biological predictors of treatments and the effect of treatment on neurocircuitry.