Androgens and the Aging Male
Androgens and the Aging Male

Author: B.J. Oddens

Publisher: CRC Press

Published: 1996-11-15

Total Pages: 266

ISBN-13: 9781850707639

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While menopause in women is a well-established and well documented phenomenon, the andropause in men is a relatively new concept. The terms male menopauseand andropausesuggest that this is an abrupt phenomenon related to a sudden deprivation of sex hormones. Unlike the menopause, which has a relatively sudden onset, the andropause appears to be a gradual process. It has been hypothesized that an androgen deficiency might develop with aging. Androgens and the Aging Male explores this hypothesis. The book focuses on the gradually progressive problems related to the decline in androgens that can occur with advancement of age. It examines the debate about the extent to which an age-dependent decline in androgens leads to health problems that affect or impair the quality of life, and the theory behind it. In addition, it reviews studies evaluating the effects of androgen supplementation. Androgens and the Aging Male comprehensively covers androgen function and how it changes over time.

Growth Hormone Secretagogues
Growth Hormone Secretagogues

Author: Barry B. Bercu

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 458

ISBN-13: 1461223962

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The traditional concept of a neuroendocrine mechanism for regulation of growth hormone (GH) secretion is based in large part on the work of Roger Guillemin. The work of Dr. Guillemin, who was awarded the 1977 Nobel Prize in Physiology and Medicine, supported the view that quantita tive change in GH secretion was the net result of pituitary stimulation and inhibition by the hypothalamic neurohormones, GH releasing hormone (GHRH), and somatostatin (somatotropin release inhibiting factor; SRIF), respectively. During the 1970s, another endocrine research pioneer, Dr. Cyril Bowers, discovered that structural modification of enkephalin re sulted in a family of peptides with GH releasing properties. These com pounds, simply called GH releasing peptide (GHRP), were originally thought to mimic GHRH. However, upon subsequent investigation they were found to supplement the activity of the natural hormone through a different mechanism. Nearly two decades after their discovery, the differ ences between GHRP and GHRH have been described by many different laboratories throughout the world. The complementary GH secretagogues have different binding sites, second messengers, and effects on gene expres sion. Based on these differences, it has been suggested that expansion of the original two hormone mechanisms for GH regulation to include a third molecule may be appropriate, even though the naturally occurring ana logue of GHRP has not yet been identified. Despite our lack of knowledge concerning the natural product mimicked by GHRP, clinical development of the new family of GH secretagogues for diagnostic and therapeutic purposes has begun in earnest.

Gastrointestinal Function in Diabetes Mellitus
Gastrointestinal Function in Diabetes Mellitus

Author: Michael Horowitz

Publisher: John Wiley & Sons

Published: 2004-08-13

Total Pages: 364

ISBN-13: 047086964X

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Gastrointestinal function represents an important, and hitherto inappropriately neglected, aspect of diabetes management. Disordered gastrointestinal motor and sensory function occurs frequently in both type 1 and type 2 diabetes and may be associated with gastrointestinal symptoms that adversely affect quality of life. During the last two decades there has been a rapid expansion in knowledge in this area. It is now recognised that upper gastrointestinal motility is pivotal to the regulation of postprandial blood glucose concentrations in both health and patients with diabetes. This book is the first of its kind and was stimulated by the need to consolidate these recent advances, which dictate that a knowledge of gastroenterology as it relates to diabetes is now required of the clinician/diabetologist. Features an organ-specific overview of the epidemiology and pathophysiology of disordered gastrointestinal (including hepatobiliary and pancreatic) function in diabetes mellitus Contains guidelines for the clinician, diabetologist and gastroenterologist for both diagnosis and management Includes a comprehensive description of the relation between gastrointestinal function, gastrointestinal hormones, autonomic nerve function and glycaemic control in animal models Covers the development of new treatment options, particularly those targeted at the reduction of postprandial hyperglycaemia, to optimise glycaemic control This book will be of interest to gastroenterologists, diabetologists, specialist nurses and clinical researchers.

Insulin Resistance
Insulin Resistance

Author: David Moller

Publisher: John Wiley & Sons

Published: 1993-10-15

Total Pages: 446

ISBN-13: 9780471939771

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The past two decades have seen explosive gains in our understanding of the physiology and basic mechanisms of insulin action and the critical importance of insulin resistance in the pathogenesis of clinical disorders such as non-insulin dependent diabetes mellitus, essential hypertension and atherosclerotic cardiovascular disease. Insulin Resistance offers the first comprehensive review of the field, with integrated chapters providing up to date coverage of the essential components of basic and clinical research that have contributed to current understanding of the topic. There are chapters on basic mechanisms of insulin action, in depth discussions of insulin resistance syndromes from epidemiological, clinical and biochemical viewpoints and a discussion of therapeutic approaches to insulin resistance. Insulin Resistance will be an invaluable resource for clinicians and scientists with an interest in the mechanisms of insulin action, the clinical sequelae of hyperinsulinemia and future therapies of insulin resistance.

Hormone Resistance Syndromes
Hormone Resistance Syndromes

Author: J. Larry Jameson

Publisher: Springer Science & Business Media

Published: 1999-01-26

Total Pages: 285

ISBN-13: 1592596983

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Leading clinicians review in depth the clinical and molecular aspects of the hormone resistance syndromes caused by receptor mutations. These mutations are involved in a large number of disorders, including dwarfism, Laron syndrome, pseudohypoparathyroidism, insulin resistance, resistance to thyroid hormone, glucocorticoid resistance, hereditary resistance to vitamin D, and estrogen resistance. Throughout, the book's distinguished contributors not only summarize the clinical features of these and related disorders, but also illuminate their molecular bases. Hormone Resistance Syndromes provides an authoritative summary and standard reference for all those clinicians and researchers actively studying these mutations today and affords a unique opportunity to understand hormone action in normal physiology.