Choh Hao Li – författare

Hormonal Proteins and Peptides: β-Endorphin, Volume X focuses on the chemistry, biology, and clinical investigations of opioid peptides. This book discusses the chemical approach in isolating a chemical entity from its natural source and investigates its biological activity after it has been determined to be a pure substance. Organized into nine chapters, this volume starts with an overview of the structure–activity relationship of β-endorphin (β-EP) by synthetic approach. This text then explores the proteinases involved in the generation of opioid peptides, including β-EP from β-lipotropin (β-LPH). Other chapters review the biosynthesis of β-EP and consider in detail the opiate receptor. This book discusses as well the anatomy of β-EP-containing structures in pituitary and brain. The final chapter presents a discussion on the historical aspects of opiate–peptide discoveries, particularly in the field of narcotic antagonists. This book is a valuable resource for chemists, biologists, endocrinologists, physicians, and neurobiologists.

Hypothalamic Hormones is a collection of papers that elucidates the various aspects, chemical properties, effects, and history of hypothalamic hormones. The book is composed of five chapters on the detailed study of hypothalamic hormones. Chapter 1 is about a review of basic and clinical studies of corticotropin releasing factor (CRF); thyrotropin releasing hormone (TRH); prolactin releasing factor; prolactin-release inhibiting factor; factors affecting the release of melanotropin; luteinizing hormone release hormone (LHRH); growth hormone release factor; and somatostatin. The second chapter is a discussion on the various aspects of luteinizing hormone release hormone (LHRH). Subsequent chapters are concerned with the study of factors that control the secretion of growth hormone, with particular emphasis on brain neurotransmitters; the mechanism of action of hypothalamic hormones; and effects of androgens, estrogens, and other peripheral hormones on the hypothalamus function. The last chapter gives a history of neurosecretion and neuroendocrinology. Biochemists, physicians, pharmacologists, endocrinologists, researchers, and students in the medical field will find this book invaluable.

Hormonal Proteins and Peptides: Prolactin, Volume VIII focuses on the broad spectrum of biological activities of prolactin among the vertebrates. This book discusses the function of prolactin in stimulating crop milk formation in birds as well as in inducing incubation behavior in the ring dove. Organized into five chapters, this volume starts with an overview of the chemistry of prolactin and its role on normal mammary gland growth and function. This text then explores the prolactin effects in tumor induction and growth. Other chapters review the status of the evolutionary biology and comparative endocrinology of prolactin. This book discusses as well the nature of prolactin cells, the control of prolactin secretion, and the nature of the prolactins from various vertebrate sources. The final chapter considers the significant advances in gonadotropins, including prolactin, follitropin, relaxin, and lutropin. This book is a valuable resource for biologists, endocrinologists, zoologists, embryologists, physicians, and medical health professionals.

Hormonal Proteins and Peptides, Volume IV: Growth Hormone and Related Proteins deals with various aspects of somatotropin or growth hormone, and its related proteins. This book begins by discussing the bioassay methods for somatotropin, followed by a review of the in vitro lipolytic actions of the hormone. The chemistry of human chorionic somatomammotropin (HCS) and human somatotropin (HGH) are compared and deliberated in detail. This publication concludes with an analysis of the control of prolactin secretion, including an account of the development of the hypophysectomy technique in the rat and effect of hypophysectomy on various bodily functions in experimental animals. This volume is a good reference for endocrinologists, medical practitioners, and researchers conducting work on growth hormones.

Hormonal Proteins and Peptides, Volume V: Lipotropin and Related Peptides deals with peptides that have neurobiological properties. This book consists of five chapters. Chapter 1 reviews the chemistry of melanotropins, while Chapter 2 describes the most potent morphinelike peptide, ?-endorphin. The third chapter summarizes the chemistry and biology of lipotropins that were discovered and characterized from 1964 to 1965. Chapter 4 examines the properties and physiological role of neurophysins. A historical perspective of the achievements of the Uppsala School regarding the separation methods and biographical sketch of Arne Tiselius are presented at the last chapter. This book is recommended for endocirnologists, clinicians, and students researching on lipotropins.

Hormonal Proteins and Peptides: Corticotrophin (ACTH) is a collection of papers dealing with the chemistry and biology of adrenocorticotropic hormone (ACTH). One paper describes the structure-function studies made on ACTH, with reference to the steroidogenic activity of synthetic ACTH fragments and analogs. The paper also discusses the melanocyte-stimulating hormone (MSH) activity, as well as the behavioral effects among the extraadrenal properties of ACTH. Some problems related to ACTH receptors include the role of extracellular calcium and the characterization of ACTH receptors in fetal and adult human adrenocortical cells. Another paper describes ACTH synthesis in the pituitary and extrapituitary tissues. One paper analyzes the role of ACTH in the regulation process concerning the production of steroid hormones, particularly, on the generation of glucocorticoids. Glucocorticoids are the characteristic products of the zona fasciculata. Another paper shows that the steady-state level of ACTH synthesis and release are due to the effects of stimulatory factors such as CRF and inhibitory hormones (namely, the glucocorticoids on the corticotroph). The maintenance of responsiveness of ACTH-secreting cells (as a response to individual stress in humans) can be a manifestation of an inherent molecular characteristic. This collection will prove valuable to microbiologists, biotechnologists, and academicians connected with the biological sciences.

Hormonal Proteins and Peptides, Volume XI: Gonadotropic Hormones deals with gonad stimulating hormones that cause precocious sexual maturity. This book begins by reviewing the relationship of the chemical structure to the biological activity of gonadotropins and chorionic hormones, followed by a brief presentation on the in vitro bioassay methods. A comprehensive discussion on some aspects of the molecular mechanism of gonadotropin action is also provided. This publication concludes with an analysis of the immunobiology of gonadotropins. This book is intended for endocirnologists, but is also useful for medical practitioners and researchers concerned with gonadotropic hormones.

Hormonal Proteins and Peptides: Techniques in Protein Chemistry, Volume IX presents the various methods in protein chemistry and discusses their use for hormonal protein investigations. This book examines the approach to investigating biologically active peptides, which is based on a combination of chromatographic and fluorometric procedures. Organized into five chapters, this volume starts with an overview of the fluorometric methods for analysis of peptides and proteins with focus on their use in high performance liquid chromatography. This text then presents a thorough discussion on partition chromatography of proteins and peptides. Other chapters consider a comprehensive account of absorption and fluorescence techniques for the structural analysis of proteins. This book presents as well a comprehensive discussion on optical rotatory dispersion and circular dichroism methods and their application for the study of protein conformation. The final chapter deals with the historical aspects of fetuin and ultracentrifuge. This book is a valuable resource for chemists, biologists, endocrinologists, and physicians.

Hormonal Proteins and Peptides: Growth Factors, Volume XII focuses on the chemistry and biology of nerve growth factor (NGF), insulin-like growth factors/somatomedins/multiplication-stimulating activity (IGFs/SMs/MSA), fibroblast growth factors (FGFs), platelet-derived growth factor (PDGF), and skeletal growth factor (SGF). This book discusses the development of growth factors in cell proliferation, differentiation, and malignancy. Organized into eight chapters, this volume starts with an overview of the findings on the structural and biological properties of NGF. This text then discusses the identical amino acid sequences of IFG-I and SM-c and explains as well the similarities in the structure of IFG-II and MSA. Other chapters present a thorough discussion of human PDGF, with emphasis on the link between the PDGF and the simian sarcoma virus gene product. This book discusses as well the mechanism of action of the pituitary and brain FGF. The final chapter deals with the discovery, isolation, and characterization of the biological activities of epidermal growth factor (EGF). This book is a valuable resource for biochemists, endocrinologists, and physicians.

Hormonal Proteins and Peptides, Volume VI: Thyroid Hormones is a compilation of papers that details the various aspects, chemical properties, effects, and history of thyroid hormones. The book covers a wide range of topics related to the study of thyroid hormones. Six chapters are devoted to the various aspects of thyroid hormones. Chapter 1 deals with the chemistry of human thyrotropin. Chapters 2 and 3 survey the chemistry of thyroid hormones and analogs, focusing on synthesis and structure-activity relationships. Chapter 4 presents thyroxin action and the possible direct participation of thyroxin in catecholamine pathways in the nervous system. Chapter 5 discusses the thyroid hormone action during amphibian metamorphosis at the cellular and molecular levels. An account of the evolution of the thyroid function is given in Chapter 6. The final chapter delves on the historical aspect of thyroid hormones. Biochemists, physicians, pharmacologists, researchers, and students in the medical field will benefit from this book.

Hormonal Proteins and Peptides, Volume II reviews extensively the knowledge on the biology and chemistry of the protein and peptide hormones. This book presents the structures of the various protein and peptide hormones. Organized into three chapters, this volume begins with an overview of the various aspects of the structure and function of adrenocorticotropin hormone (ACTH) with reference to the ability to stimulate the adrenal gland of the rat, amphibian melanophores, and adipose tissues of the rat and rabbit. This text then reviews the isolation, purification, and elucidation of the amino acid sequence of corticotropins from various species. Other chapters consider the structures of porcine and human ACTH. This book discusses as well the working hypothesis for studies on the secondary-tertiary structure of peptide hormones. The final chapter deals with the abbreviations used for amino acids and protecting groups. This book is a valuable resource for peptide chemists, biologists, biochemists, and research workers.