Published December 27, 1990
by Oxford University Press, USA .
Written in English
|Contributions||J. C. Hutton (Editor), K. Siddle (Editor)|
|The Physical Object|
|Number of Pages||368|
In mammals, gastrin stimulates gastric acid secretion and growth of the gastric mucosa. CCK induces gallbladder contraction and pancreatic enzyme secretion as a digestive hormone. As a brain peptide, CCK has various neural functions that affect food intake, anxiogenesis, satiety, nociception, memory, and . Protein Secretion in Bacteria, authored and edited by an international team of experts, draws together the many distinct functions and mechanisms involved in protein translocation in one concise tome. This comprehensive book presents updated information on all aspects of bacterial protein secretion . Abstract. Peptide hormones are composed of polypeptide chains with a size ranging from three to hundreds of amino acids. Peptide hormone synthesis involves several steps occurring in the nucleus and cytoplasm of secretory cells, including gene transcription into the precursor nuclear ribonucleic acid, posttranscriptional modifications of the precursor messenger ribonucleic acid . Hormone secretions in the pituitary glands control the growth and activity of three other endocrine glands: the thyroid, adrenals, and gonads. This chapter describes the structure, physiology and functions of pituitary gland, and general aspects of the regulation of anterior pituitary function.
Hormones of the endocrine system is a vast topic with numerous hormones involved which affect virtually every organ in the human body. Human physiologic processes such as homeostasis, metabolic demand, development, and reproduction are all possible because of hormones and the processes mediated by their actions. This review will elaborate on the organ which secretes the hormone, the Author: Miles Campbell, Ishwarlal Jialal. Trypsin modulating oostatic factor (TMOF) is a proline rich, 10 amino acid peptide identified in Ae. aegypti that is often discussed as a peptidyl regulator of blood meal digestion and egg formation in mosquitoes (Borovsky et al., ; Verlinden et al., ). SOMATOSTATIN (SST) SST is a cyclic peptide, encoded by a single gene in humans, which mostly exerts inhibitory effects on endocrine and exocrine secretions. Many cells in the body, including specialized cells in the anterior paraventricular nucleus and arcuate nucleus, produce by: 8. Regulation of Hormone Secretion. To prevent abnormal hormone levels and a potential disease state, hormone levels must be tightly controlled. The body maintains this control by balancing hormone production and degradation. Feedback loops govern the initiation and maintenance of most hormone secretion in response to various stimuli.
Insulin plays a central role in the regulation of human metabolism. The hormone is a residue anabolic protein that is secreted by the β-cells in the Islets of Langerhans. Containing two chains (A and B) connected by disulfide bonds, the mature hormone is the post-translational product of a single-chain precursor, designated proinsulin. Extensive studies of the three-dimensional structure Cited by: Additionally, some hormones may operate via a combination of endocrine and paracrine mechanisms. These “candidate” hormones are glucagon-like peptide-1 (GLP-1), pancreatic polypeptide, and peptide YY. Lastly, neurocrine hormones get secreted by postganglionic non-cholinergic neurons of the enteric nervous : Amish Parikh, Claudwardyne Thevenin. Cholecystokinin (CCK) is a peptide hormone linked to the gastrointestinal (GI) system. The receptors are expressed in the central nervous system specifically in the hippocampus, cerebral cortex, and striatum . It is present in the nucleus of tractus solitarius and area postrema of the lower portion of the brain stem. CCK is tissue-specific and developmentally : Oluchukwu Okonkwo, Adebayo Adeyinka. Peptide Hormones Activate Membrane-Bound Receptors. Peptide hormones range in size from a simple tripeptide (thyrotropin-releasing hormone) to a amino acid protein (prolactin), to a glycosylated multisubunit oligomer (human chorionic gonadotropin). Because these agents mediate rapid responses to the environment, they are stored in secretory vesicles adjacent to the plasma membrane and are .