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Author : Simon Siu Hoi Chan
Publisher :
ISBN 13 :
Total Pages : 296 pages
Book Rating : 4.:/5 (47 download)
Download or read book Molecular Studies of Snakehead Fish Growth Hormone Receptor written by Simon Siu Hoi Chan and published by . This book was released on 1997 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Philippa Melamed
Publisher : World Scientific
ISBN 13 : 9812388362
Total Pages : 308 pages
Book Rating : 4.8/5 (123 download)
Download or read book Hormones and Their Receptors in Fish Reproduction written by Philippa Melamed and published by World Scientific. This book was released on 2005 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research on the molecular aspects of fish reproduction has progressed swiftly over the past few years. With the availability of wide-ranging molecular tools, fish researchers have elucidated many of the molecular mechanisms regulating reproduction which operate in the brain, pituitary and gonad. This research has revealed novel variants of reproductive hormones and their receptors, and has shed new light on the mechanisms through which many of these genes can be activated. Several of the findings, which are reported in this book, have formed the basis for subsequent mammalian research and will also constitute the platform on which new approaches to reproductive management in aquaculture can be developed.
Author : Sekar Megarajan
Publisher : Delve Publishing
ISBN 13 : 9781773611990
Total Pages : 0 pages
Book Rating : 4.6/5 (119 download)
Download or read book Nature of Fish Growth Hormones written by Sekar Megarajan and published by Delve Publishing. This book was released on 2017-11 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Growth rate is a primary trait of interest in most finfish selection programs and is intrinsically linked to productivity and profitability of finfish aquaculture industry in several parts of the world. Search for candidate genes influencing growth has been a major focus of research in aquaculture and several such genes have been isolated from the fish genome and their effects are quantified. Growth hormone genes have been studied extensively in many species because of its potential in enhancing the growth rate of fishes in aquaculture. The identified growth hormone gene in most of the fishes is roughly 1.5 kb long, with the protein coding region divided in to four to five blocks (exons) representing less than one third length of the genomic region. Growth hormone (GH) is a single chain polypeptide that plays a major role in the growth development of vertebrates. It is the main regulator of postnatal somatic growth and stimulates anabolic processes such as cell division, skeletal growth and protein synthesis. In addition, growth hormone is also involved in the regulation of fat oxidation, inhibition of glucose transport to peripheral tissues and regulation of ribosome translational activity, which in turn influences protein synthesis. Presently, the importance of GH as a candidate gene for studies of genetic variation in connection with growth traits and potential natural marker for studies of evolutionary relationship of various fishes has been demonstrated. Its potential application in the growth traits and fish evolution studies has been an active area of research. Natural growth rates of organisms have evolved to provide maximum fitness in wild environments and therefore, enhancement of natural growth rate of fish in aquaculture has been extensively explored, with gains arising from improvements in husbandry, nutrition, and genetical selection. Growth enhancement can be advantageous for aquaculture by shortening production time, and enhancing feed conversion efficiency. Therefore, endocrine approaches in controlling growth have been extensively explored. Several studies have demonstrated the efficacy of mammalian GH in the acceleration of growth of various species. In fish, GH administration by various modes of delivery like injection, and oral administration of hormones has been successfully studied. These studies have suggested that the exogenous growth hormone enhances fish growth by stimulating appetite and improving feed conversion. It is clearly understood that growth hormone plays major role in aquaculture industry by increasing the growth. Therefore, knowing the different aspects of growth hormone is very much essential for the researchers aim for growth enhancement in fishes.
Author : Reena Sodhi
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (697 download)
Download or read book Studies on Growth Hormone-receptor Interactions written by Reena Sodhi and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : 陳冠榮
Publisher : Open Dissertation Press
ISBN 13 : 9781361412404
Total Pages : pages
Book Rating : 4.4/5 (124 download)
Download or read book Molecular Cloning and Functional Characterization of a Goldfish Growth Hormone-Releasing Hormone Receptor written by 陳冠榮 and published by Open Dissertation Press. This book was released on 2017-01-27 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Molecular Cloning and Functional Characterization of a Goldfish Growth Hormone-releasing Hormone Receptor" by 陳冠榮, Koon-wing, Chan, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. DOI: 10.5353/th_b3121392 Subjects: Molecular cloning Growth hormone releasing factor Hormone receptors Goldfish - Physiology
Author : Changmin Chen
Publisher :
ISBN 13 :
Total Pages : 264 pages
Book Rating : 4.:/5 (37 download)
Download or read book The Molecular Mechanisms of Signal Transduction by the Growth Hormone Receptor written by Changmin Chen and published by . This book was released on 1995 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Yu Wan
Publisher :
ISBN 13 :
Total Pages : 217 pages
Book Rating : 4.:/5 (625 download)
Download or read book Molecular Manipulation of the Growth Hormone Receptor Activation Process written by Yu Wan and published by . This book was released on 2004 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : 馬智謙
Publisher : Open Dissertation Press
ISBN 13 : 9781374694033
Total Pages : pages
Book Rating : 4.6/5 (94 download)
Download or read book Molecular Studies of Gonadotropin Releasing Hormone Receptors and Estrogen Receptors in Goldfish (Carassius Auratus) written by 馬智謙 and published by Open Dissertation Press. This book was released on 2017-01-27 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Molecular Studies of Gonadotropin Releasing Hormone Receptors and Estrogen Receptors in Goldfish (Carassius Auratus)" by 馬智謙, Chi-him, Eddie, Ma, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. DOI: 10.5353/th_b4257531 Subjects: Luteinizing hormone releasing hormone Estrogen Hormone receptors Goldfish - Genetics
Author : Koon-wing Chan
Publisher :
ISBN 13 :
Total Pages : 212 pages
Book Rating : 4.:/5 (513 download)
Download or read book Molecular Cloning and Functional Characterization of a Goldfish Growth Hormone-releasing Hormone Receptor written by Koon-wing Chan and published by . This book was released on 1996 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
![Download Understanding the Growth Hormone Receptor-[beta]TrCP Interactions: Molecular Tools for Controlling Growth Hormone Sensitivity PDF Online Free](https://books.google.com/books/content/images/frontcover/tYkZtwAACAAJ?fife=w200-h370)
Author : Ana Carolina da Silva Almeida
Publisher :
ISBN 13 :
Total Pages : 168 pages
Book Rating : 4.:/5 (756 download)
Download or read book Understanding the Growth Hormone Receptor-[beta]TrCP Interactions: Molecular Tools for Controlling Growth Hormone Sensitivity written by Ana Carolina da Silva Almeida and published by . This book was released on 2011 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Abbas Ali Palizban
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (594 download)
Download or read book The Molecular Studies of Growth Hormone Binding Protein in Health and Disease written by Abbas Ali Palizban and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Steriod Regulation of Growth Hormone Gene Expression and Molecular Cloning of Estrogen Receptors in Chinese Grass Carp written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: (Uncorrected OCR) Abstract of thesis entitled STEROID REGULATION OF GROWTH HORMONE GENE EXPRESSION AND MOLECULAR CLONING OF ESTROGEN RECEPTORS IN CHINESE GRASS CARP Submitted by TO KIT WA ANTHEA for the degree of Master of Philosophy at The University of Hong Kong in December 2002 Hormones from the steroid! thyroid superfamily are key regulators for body growth and metabolism in animals. Part of this mechanism is mediated via steroid! thyroid hormone modulation of growth hormone (GH) synthesis at the pituitary level. In this study, using a static incubation approach, a systematic survey was conducted in vitro to examine the effects of sex steroids, adrenocorticoids, and thyroid hormone on GH mRNA expression in grass carp (Ctenopharyngodon idella) pituitary cells. Sex steroids, including estradiol, testosterone, and the estrogen agonist diethylstilbestrol, increased GH mRNA levels in grass carp pituitary cells. These stimulatory actions reached their peaks at submicromolar concentrations. In a similar dose range, progesterone did not affect basal GH mRNA expression and a slight inhibition was observed when the doses were increased to micromolar levels. Glucocorticoids, including hydrocortisone, corticosterone, and the synthetic analog dexamethasone, suppressed GH mRNA levels when tested at high micromolar doses. Unlike glucocorticoids, a slight elevation in GH mRNA levels was noted when pituitary cells were exposed to submicromolar doses of aldosterone. In parallel studies, retinoic acid and thyroid hormone did not alter basal GH mRNA expression in grass carp pituitary cells. Data provides evidence that steroid hormones can differentially regulate GH gene expression in grass carp by acting directly at the pituitary cell leveL Among the hormones tested, estradiol was a potent stimulant for GH mRNA expression. Molecular cloning of grass carp estrogen receptors (ER) was also performed. Using 5' and 3' RACE, three isoforms of grass carp ERs, namely ERa, ERf3-S and ERf3-L.
Author : Philippa Melamed
Publisher :
ISBN 13 : 9789782388360
Total Pages : 0 pages
Book Rating : 4.3/5 (883 download)
Download or read book Hormones an Their Receptors in Fish Reproduction written by Philippa Melamed and published by . This book was released on 2004 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : HOI-YAN. CHAN
Publisher :
ISBN 13 : 9781374724822
Total Pages : pages
Book Rating : 4.7/5 (248 download)
Download or read book Molecular Cloning and Functional Characterization of Goldfish Alpha-2 Adrenergic Receptors written by HOI-YAN. CHAN and published by . This book was released on 2017-01-27 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Molecular Cloning and Functional Characterization of Goldfish Alpha-2 Adrenergic Receptors" by Hoi-yan, Chan, 陳凱恩, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: Abstract of thesis entitled MOLECULAR CLONING AND FUNCTIONAL CHARACTERIZATION OF GOLDFISH ALPHA-2 ADRENERGIC RECEPTORS Submitted by Chan Hoi Yan for the degree of Master of Philosophy at The University of Hong Kong in September 2004 In mammals, adrenergic stimulation at the hypothalamic level through alpha-2 adrenergic receptors can induce growth hormone secretion from the pituitary. However, the alpha-2 receptor subtype(s) responsible for this stimulatory action has not been elucidated. In the goldfish, we have previously shown that alpha-2 activation at the pituitary level can suppress growth hormone release and that removal of alpha-2 inhibition can trigger a rebound of growth hormone secretion. These findings have prompted us to speculate that alpha-2 adrenergic receptors should be expressed in goldfish pituitary cells and be responsible for the growth hormone regulation by adrenergic input at the pituitary level. As a first step to study the alpha-2 receptor subtype(s) expressed in the goldfish pituitary, molecular cloning was performed to establish the structural identity of the goldfish alpha-2A, alpha-2B, and alpha-2C adrenergic receptors. By library screening and 3'/5' RACE, the complementary DNAs (cDNAs) for alpha-2A, alpha-2B, and alpha-2C adrenergic receptors with the sizes of 2.72 Kb, 2.86 Kb, and 1.72 Kb, respectively, have been isolated from the brain-pituitary axis of the goldfish. The open-reading frames of these cDNAs encode proteins of 383 to 505 amino acids in size with seven transmembrane domains typical of those of the G protein-coupled receptors. Sequence analysis also reveals that these goldfish alpha-2A, alpha-2B, and alpha-2C adrenergic receptors are structurally homologous to the corresponding receptor subtypes in mammals. By reverse transcription polymerase chain reaction (RT-PCR), the transcripts of alpha-2A and alpha-2B adrenergic receptors were identified in many tissues in the goldfish, including the heart, liver, gill, intestine, kidney, muscle, spleen, pituitary, and various brain segments. A similar expression pattern was also noted for alpha-2C adrenergic receptor, except that its mRNA was not detected in the intestine and its expression in the brain was restricted to the brain stem and spinal cord. To characterize the pharmacological and biochemical properties of these newly cloned receptors, functional expression of goldfish alpha-2A, alpha-2B, and alpha-2C adrenergic receptors was conducted in Chinese hamster ovary (CHO) cells. In this case, the receptor binding properties of these goldfish adrenergic receptors were tested using a radioreceptor binding approach. Although the order of affinity of the respective alpha-2A, alpha-2B, and alpha-2C adrenergic receptors is different from that reported in mammals, these receptors consistently exhibited a high affinity for ligands selective for alpha-2 but not for alpha-1 and beta adrenergic receptors. Furthermore, activation of these receptors by norepinephrine or the alpha-2 agonist + + clonidine could trigger rapid activation of the Na /H exchanger, an inhibition of 2+ cyclic AMP production and a decrease in intracellular Ca levels. These results, taken together, have confirmed that these newly cloned receptors are functional alpha-2 adrenergic receptors in the goldfish. The cDNAs for the goldfish alpha-2A, alpha-2B, and alpha-2C
Author :
Publisher :
ISBN 13 :
Total Pages : 1448 pages
Book Rating : 4.:/5 (31 download)
Download or read book Cumulated Index Medicus written by and published by . This book was released on 1994 with total page 1448 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Zoitsa Maniou
Publisher :
ISBN 13 :
Total Pages : 190 pages
Book Rating : 4.:/5 (593 download)
Download or read book Molecular Evolution of Pituitary Growth Hormone written by Zoitsa Maniou and published by . This book was released on 2003 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Alexandros Lioupis
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (594 download)
Download or read book Studies on Non-primate Growth Hormones written by Alexandros Lioupis and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
