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Novel expression of luteinizing hormone-chorionic gonadotropin receptor in gastrointestinal tract of the rat and its implications in the aetiology of emesis/hyperemesis gravidarum.

by Poon Chuen Wai. / Thesis (Ph.D.)--Chinese University of Hong Kong, 1996. / Includes bibliographical references (leaves 161-176). / Abstract --- p.i / Acknowledgements --- p.vi / Abbreviations --- p.viii / Introduction --- p.1 / Review of the literature --- p.2 / Incidence and historical background --- p.3 / Theories on etiology of emesis/hyperemesis gavidarum --- p.5 / Mechanism of vomiting --- p.7 / Temporal association between hCG and emesis/hyperemesis gravidarum --- p.9 / Thyroid function and emesis/hyperemesis gravidarum --- p.13 / Steroid hormone and emesis/hyperemesis gravidarum --- p.15 / Hyperemesis caused by corpus luteum in right ovary --- p.15 / "Formulation of a new hypothesis for emesis/hyperemesis gravidarum : “hCG stimulated electrolyte and fluid secretion in the UGIT, leading to pregnancy associated vomiting 226}0ح" --- p.16 / Is hCG a humoural secretory agent ? --- p.18 / Can hCG stimulate the secretion of fluid and electrolytes from the GIT ? --- p.18 / Are LH-CGR present in the GIT ? --- p.20 / Can electrolyte and fluid secretion in the UGIT lead to vomiting during pregnancy ? --- p.24 / HCG and regulation of electrolyte and fluid movement --- p.24 / Gut- gonad axis --- p.25 / Objectives --- p.27 / Section 1 hCG and in vitro secretion of anions from cells with functional LH-CGR - A cell model --- p.28 / Introduction --- p.28 / Materials and Methods / Materials --- p.30 / Methods / Chapter 1. --- Test for the presence of LH-CGR in human gastrointestinal cell lines --- p.31 / Chapter 2. --- Establishment of cells expressing functional receptor for hCG --- p.35 / Chapter 3. --- Effect of hCG on [125I] iodide efflux from COS-1 cells transiently expressing MC1+2 LH-CG/TSH chimera receptor --- p.38 / Chapter 4. --- Anion secretion from MLTC-1 cells with wild type LH-CGR --- p.38 / Chapter 5. --- Statistics --- p.41 / Results --- p.42 / Discussion --- p.55 / Section 2 Presence of LH-CGR in the upper gastrointestinal tract of rat --- p.61 / Introduction --- p.61 / Materials and Methods / Materials --- p.62 / Methods / Chapter 1. --- Screening for hCG binding sites along the rat GIT --- p.63 / Chapter 2. --- Detection of Triton X-100 soluble plasma membrane hCG binding protein along the rat GIT --- p.64 / Chapter 3. --- Measurement of affinity of the hCG binding proteins by Scatchard analysis --- p.66 / Chapter 4. --- Determination of the isoelectric points for the duodenal hCG binding protein and ovarian LH-CGR --- p.67 / Chapter 5. --- Developement of antibodies to LH-CGR --- p.69 / Chapter 6. --- Western blotting to determine the molecular weight of the LH-CGR --- p.78 / Chapter 7. --- Immunohistochemical localization of LH-CGR in the UGIT --- p.80 / Chapter 8. --- Statistics --- p.81 / Results --- p.82 / Discussion --- p.109 / Section 3 hCG and in vivo secretion of electrolytes from pancreas / duodenal region in rats --- p.119 / Introduction --- p.119 / Materials and Methods / Materials --- p.121 / Methods --- p.121 / Chapter 1. --- The effect of hCG on the secretion of electrolytes into bile and pancreatic/duodenal effluent --- p.121 / Chapter 2. --- Effect of ovariectomy on pancreatic content and electrolyte levels in blood --- p.125 / Chapter 3. --- Statistics --- p.128 / Results --- p.129 / Discussion --- p.151 / General discussion --- p.155 / Reference --- p.161 / Original data --- p.176

Identiferoai:union.ndltd.org:cuhk.edu.hk/oai:cuhk-dr:cuhk_321679
Date January 1996
ContributorsPoon, Chuen Wai., Chinese University of Hong Kong Graduate School. Division of Pathological Sciences.
PublisherChinese University of Hong Kong
Source SetsThe Chinese University of Hong Kong
LanguageEnglish
Detected LanguageEnglish
TypeText, bibliography
Formatprint, ix, 176 leaves : ill. (some col., some mounted) ; 30 cm.
RightsUse of this resource is governed by the terms and conditions of the Creative Commons “Attribution-NonCommercial-NoDerivatives 4.0 International” License (http://creativecommons.org/licenses/by-nc-nd/4.0/)

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