Conclusion 1. The results of the research partly supported hypothesis 1a. There was a significant reduction in both endothelium-dependent arterial relaxation following a surgical menopause. The results of the research partly supported hypothesis 1b. There was a significant reduction in endothelium-dependent arterial relaxation but no significant effect on endothelium-independent arterial relaxation. / Conclusion 2. The results of the research partly supported hypothesis 2a. The addition of unopposed oestrogen significantly improved endothelium-dependent but not endothelium-independent arterial relaxation. The results of the research supported hypothesis 2b. The addition of oestradiol combined with progestogen (norethisterone acetate) reversed the reduction in arterial relaxation caused by a surgical menopause. The results of the research partly supported hypothesis 2c. The addition of tibolone reversed the reduction endothelium-dependent but not endothelium-independent arterial relaxation. The results of the research partly supported hypothesis 2d. The addition of oestradiol combined with a progestogen (norethisterone acetate) reversed the reduction in endothelium-dependent but not endothelium-independent arterial relaxation. / Conclusion 3. The results of the research partly supported hypothesis 3a. Endothelium-dependent arterial relaxation but no endothelium-independent arterial relaxation was improved after the addition of menopausal hormone therapy using oestrogen combined with a progestogen in a continuous manner. The results of the research did not support hypothesis 3b. Neither endothelium-dependent arterial relaxation nor the endothelium-independent arterial relaxation was improved by cyclical menopausal HT. / Conclusion 4. The results of the research did not support hypothesis 4. The addition of menopausal hormone therapy using combined oestrogen with progestogen did not improve arterial relaxation in postmenopausal women with established coronary heart disease. / Hypothesis 2. This hypothesis examined three different types of commonly used menopausal HT. That unopposed oestrogen (2a), oestrogen combined with a progestogen (2b and 2d) or a synthetic steriod that has oestrogenic, progestogenic as well as androgenic activity (tibolone, 2c), reverse the reduction in arterial relaxation following menopause in Hong Kong Chinese women. / Hypothesis 3. That menopausal hormone therapy using oestrogen combined with progestogen given in either continuous (3a) or cyclical (3b) regimens improves arterial relaxation in postmenopausal Hong Kong Chinese women. / Hypothesis 4. That menopausal hormone therapy using combined oestrogen with progestogen improves arterial relaxation in postmenopausal Hong Kong Chinese women with established coronary heart disease. / Menopausal HT can in general at least partially reverse changes in arterial relaxation in postmenopausal women. Different types of menopausal HT exhibit different effects on arterial relaxation. In healthy vessels, menopause HT mainly reverses the endothelium-dependent vascular effect, but it remains unclear how menopausal HT affects the endothelium-independent vascular effect. However, with established coronary heart disease, menopausal HT cannot reverse the changes in vascular reactivity. / Summary. Menopause results in a reduction in arterial relaxation. However, GnRHa temporarily induced menopause in young women, the endothelium-independent vasodilatation was not impaired. This difference can be partly explained by the difference in age as vascular reactivity is age dependent. Secondly, GnRHa works with an initial phase of increase in oestrogen production resulting in a shorter duration of hypo-oestrogenism resulting in the lack of impairment on endothelium-independent vasodilatation. / This thesis tested the following hypotheses: Hypothesis 1. That vascular reactivity decreases after the menopause as shown in premenopausal Hong Kong Chinese women with either a surgical (1a) or a medically induced (1b) menopause. / This thesis will examine the effects of menopause and menopausal HT on arterial reactivity which is an indirect measurement of vascular function. Previous studies have shown that oestrogen is a potent coronary artery vasodilator, and this effect may be mediated via both endothelium-dependent and endothelium-independent mechanisms. One method of assessing vascular reactivity is to use ultrasound measurement of changes in brachial artery diameter in response to certain stimuli. Using this technique, changes in both endothelium-dependent and endothelium-independent vasodilatation can be measured. Increased rather than decreased arterial relaxation after stimulus can be viewed as a favourable response. / Yim, So-fan. / Adviser: C. J. Haines. / Source: Dissertation Abstracts International, Volume: 68-09, Section: B, page: 5873. / Thesis (M.D.)--Chinese University of Hong Kong, 2006. / Includes bibliographical references (p. 159-194). / Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Electronic reproduction. [Ann Arbor, MI] : ProQuest Information and Learning, [200-] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / School code: 1307.

Ho Hing Man. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2001. / Includes bibliographical references (leaves 140-156). / Abstracts in English and Chinese. / Chapter Chapter 1 --- General introduction / Chapter 1.1 --- History of soybean --- p.1 / Chapter 1.2 --- Health benefits of soybean --- p.2 / Chapter 1.3 --- Introduction to flavonoids --- p.2 / Chapter 1.4 --- Bioavailability of flavonoids from foods --- p.3 / Chapter 1.5 --- Pharmacological effects of flavonoids and their glycosides --- p.4 / Chapter 1.5.1 --- Anticarcinogenic activity --- p.4 / Chapter 1.5.2 --- Antioxidative activity --- p.7 / Chapter 1.5.3 --- Cardioprotective activity --- p.9 / Chapter 1.5.4 --- Osteoprotective activity --- p.10 / Chapter 1.5.5 --- Neuroprotective activity --- p.12 / Chapter 1.5.6 --- Antiangiogenic activity --- p.12 / Chapter 1.6 --- Soy leaves --- p.13 / Chapter Chapter 2 --- Isolation and purification of kaempferol glycosides and genistin in soy leaves / Chapter 2.1 --- Introduction --- p.14 / Chapter 2.2 --- Objectives --- p.15 / Chapter 2.3 --- Materials and Methods --- p.16 / Chapter 2.3.1 --- Extraction and isolation --- p.16 / Chapter 2.3.1.1 --- Preparation of soy leaves butanol extract --- p.16 / Chapter 2.3.1.2 --- Preparation of kaempferol glycosides from soy leaves butanol extract --- p.16 / Chapter 2.3.2 --- High performance liquid chromatography (HPLC) analysis --- p.19 / Chapter 2.3.2.1 --- Sample preparation for the HPLC analysis --- p.19 / Chapter 2.3.2.2 --- HPLC analysis --- p.19 / Chapter 2.3.2.3 --- Quantification of the flavonoids and their glycosides --- p.23 / Chapter 2.3.2.4 --- Change in flavonoids and their glycosides in soy leaves --- p.23 / Chapter 2.4 --- Results --- p.24 / Chapter 2.4.1 --- Compound 1 --- p.24 / Chapter 2.4.2 --- Compound 2 --- p.24 / Chapter 2.4.3 --- Compound 3 --- p.25 / Chapter 2.4.4 --- Compound 4 --- p.25 / Chapter 2.4.5 --- Compound 5 --- p.25 / Chapter 2.4.6 --- Compound 6 --- p.26 / Chapter 2.4.7 --- Quantification of flavonoids in soybean and soy leaves --- p.32 / Chapter 2.4.8 --- Age-dependent changes in flavonoids and their glycosides --- p.32 / Chapter 2.5 --- Discussion --- p.35 / Chapter 2.5.1 --- Compound 1 --- p.35 / Chapter 2.5.2 --- Compound 2 --- p.35 / Chapter 2.5.3 --- Compound 3 --- p.37 / Chapter 2.5.4 --- Compound 4 --- p.38 / Chapter 2.5.5 --- Compound 5 --- p.39 / Chapter 2.5.6 --- Compound 6 --- p.40 / Chapter 2.5.7 --- Age-dependent changes in flavonoids and their glycosides --- p.40 / Chapter Chapter 3 --- Hypolipidemic effects of soy leaves in hamsters / Chapter 3.1 --- Introduction --- p.41 / Chapter 3.1.1 --- Different lipoproteins and their functions --- p.41 / Chapter 3.1.2 --- Risk factors of cardiovascular disease --- p.42 / Chapter 3.1.3 --- Animal model --- p.43 / Chapter 3.2 --- Objectives --- p.44 / Chapter 3.3 --- Materials and Methods --- p.45 / Chapter 3.3.1 --- Animals --- p.46 / Chapter 3.3.2 --- Serum lipid and lipoprotein determinations --- p.46 / Chapter 3.3.3 --- Determination of cholesterol in the liver and adipose tissue --- p.46 / Chapter 3.3.4 --- Extraction of neutral and acidic sterols from fecal samples --- p.49 / Chapter 3.3.4.1 --- Determination of neutral sterols --- p.49 / Chapter 3.3.4.2 --- Determination of acidic sterols --- p.50 / Chapter 3.3.4.3 --- GLC analysis of neutral and acidic sterols --- p.51 / Chapter 3.3.5 --- Statistics --- p.51 / Chapter 3.4 --- Results --- p.54 / Chapter 3.4.1 --- Growth and food intake --- p.54 / Chapter 3.4.2 --- "Effects of SLP and SLEE supplementation on serum triacylglycerol (TG), total cholesterol (TC) and high-density lipoprotein cholesterol (HDL-C)" --- p.54 / Chapter 3.4.3 --- Effects ofSLP and SLEE supplementation on non-HDL-C and ratio of non-HDL-C to HDL-C --- p.55 / Chapter 3.4.4 --- Effects of SLP amd SLEE supplementations on concentration of hepatic cholesterol --- p.58 / Chapter 3.4.5 --- Effects of SLP and SLEE supplementations on perirenal adipose tissue cholesterol --- p.58 / Chapter 3.4.6 --- Effects of SLP and SLEE supplementations on fecal neutral and acidic sterols --- p.61 / Chapter 3.5 --- Discussion --- p.64 / Chapter Chapter 4 --- Effects of soy leaves and its flavonoid glycosides on haemolysis and on LDL oxidation / Chapter 4.1 --- Introduction --- p.67 / Chapter 4.1.1 --- Role of low density lipoprotein oxidation in the development of atherosclerosis --- p.68 / Chapter 4.1.2 --- LDL oxidation --- p.70 / Chapter 4.1.3 --- Thiobarbituric acid reactive substances (TBARS) as an index of LDL oxidation --- p.71 / Chapter 4.1.4 --- Antioxidant and LDL oxidation --- p.74 / Chapter 4.2 --- Objective --- p.75 / Chapter 4.3 --- Materials and methods --- p.76 / Chapter 4.3.1 --- Isolation of LDL from human serum --- p.76 / Chapter 4.3.2 --- LDL oxidation --- p.77 / Chapter 4.3.3 --- Determine the formation of thiobarbituric acid-reactive substances (TBARS) --- p.77 / Chapter 4.3.4 --- Assay for erythrocyte haemolysis --- p.78 / Chapter 4.3.5 --- Statistics --- p.79 / Chapter 4.4 --- Results --- p.80 / Chapter 4.4.1 --- Effects of three different soy leaves extracts and flavonoid glycosides on LDL oxidation --- p.80 / Chapter 4.4.2 --- Effects of three soy leaves extracts and flavonoid glycosides on erythrocyte haemolysis --- p.80 / Chapter 4.5 --- Discussion --- p.85 / Chapter Chapter 5 --- Relaxing effects of soy leaves and its flavonoids / Chapter 5.1 --- Introduction --- p.89 / Chapter 5.1.1 --- Smooth muscle contraction --- p.90 / Chapter 5.1.1.1 --- Sliding filament mechanism --- p.91 / Chapter 5.1.2 --- Intracellular mechanisms involved in the regulation of smooth muscle contraction --- p.92 / Chapter 5.1.2.1 --- Voltage-gated Ca2+ channels --- p.92 / Chapter 5.1.2.2 --- Protein kinase C (PKC) mediated smooth muscle contraction --- p.93 / Chapter 5.1.2.3 --- Thromboxane A2 receptor-mediated calcium channel --- p.94 / Chapter 5.2 --- Objectives --- p.96 / Chapter 5.3 --- Materials and methods --- p.97 / Chapter 5.3.1 --- Drugs preparation --- p.97 / Chapter 5.3.2 --- Vessel preparation --- p.97 / Chapter 5.3.3 --- Contraction experiments --- p.99 / Chapter 5.3.3.1 --- Relaxant responses of soy leaves butanol extract on the contraction induced by different constrictors --- p.99 / Chapter 5.3.3.2 --- Relaxant responses of soy leaves butanol extract on U46619 and PGF2a- induced contraction --- p.99 / Chapter 5.3.3.3 --- "Relaxant responses of genistein, genistin and the kaempferol glycosides on U46619-induced contraction" --- p.100 / Chapter 5.3.4 --- Statistics --- p.100 / Chapter 5.4 --- Results --- p.102 / Chapter 5.4.1 --- Effect of soy leaves butanol extract --- p.102 / Chapter 5.4.2 --- Role of endothelium in extract-induced relaxation --- p.102 / Chapter 5.4.3 --- Effect of the soy leaves butanol extract on contractile response to prostaglandins --- p.103 / Chapter 5.4.4 --- Effects of kaempferol glycosides and kaempferol --- p.111 / Chapter 5.4.5 --- Effects of genistein and genistin --- p.111 / Chapter 5.5 --- Discussion --- p.118 / Chapter Chapter 6 --- Effect of soy leaves on mammary tumor / Chapter 6.1 --- Introduction --- p.123 / Chapter 6.1.1 --- Carcinogenesis --- p.123 / Chapter 6.1.1.1 --- In itiation --- p.124 / Chapter 6.1.1.2 --- Promotion --- p.124 / Chapter 6.1.1.3 --- Progression --- p.125 / Chapter 6.2 --- Objective --- p.126 / Chapter 6.3 --- Materials and methods --- p.127 / Chapter 6.3.1 --- Animal --- p.127 / Chapter 6.3.2 --- Determination of estrus cycle --- p.128 / Chapter 6.3.3 --- Statistics --- p.129 / Chapter 6.4 --- Results --- p.131 / Chapter 6.4.1 --- Incident rate of tumor induction --- p.131 / Chapter 6.4.2 --- Number of tumor induced --- p.131 / Chapter 6.5 --- Discussion --- p.136 / Chapter Chapter 7 --- Conclusions --- p.136 / References --- p.140

Yuen Yee Man. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2005. / Includes bibliographical references (leaves 108-125). / Abstracts in English and Chinese. / TITLE PAGE --- p.1 / ACKNOWLEGDEMENTS --- p.2 / ABSTRACT --- p.3 / 摘要 --- p.5 / table of contents --- p.7 / list of figures and tables --- p.13 / CHAPTER 1 GENERAL INTRODUCTION --- p.16 / Chapter 1.1 --- role of PHYTOESTROGENS in soy and red WINE the PREVENTION OF CARDIOVASCULAR DISEASES (CVD) --- p.17 / Chapter 1.1.1 --- INTRoduction and Classification of Phytoestrogens --- p.17 / Chapter 1.1.2 --- estrogenic1ty of phytoestrogens and theIr abundancesin Plasma --- p.18 / Chapter 1.1.3 --- phytoestrogens as one of the active components In cvd Protection --- p.21 / Chapter 1.1.4 --- effects of Phytoestrogens on LDL Receptor and Apolipoprotein A-1 --- p.22 / Chapter 1.2 --- role of estrogen receptors (ers) in gene regulation --- p.24 / Chapter 1.2.1 --- "structure, Classification and tissue distribution of ERS" --- p.24 / Chapter 1.2.2 --- ligands for ERS --- p.25 / Chapter 1.2.3 --- mechaniSMS OF LIgands-ERS complex in GENE regulation --- p.27 / Chapter 1.2.4 --- ligand-independent ER activation --- p.28 / Chapter 1.3 --- aims and scopes of investigation --- p.29 / Chapter CHAPTER 2 --- MATERIALS AND METHODS --- p.30 / Chapter 2.1 --- chemicals and materials --- p.30 / Chapter 2.1.1 --- Chemicals --- p.30 / Chapter 2.1.2 --- Plasmids --- p.30 / Chapter 2.2 --- mammalian cell culture maintainence --- p.30 / Chapter 2.2.1 --- Maintenance of Cells --- p.31 / Chapter 2.2.2 --- Preparation of Cell Stock --- p.31 / Chapter 2.2.3 --- Cell Recovery from Liquid Nitrogen Stock --- p.31 / Chapter 2.3 --- manipulation of dna --- p.31 / Chapter 2.3.1 --- isolation of HEPG2 cells genonmic DNA --- p.31 / Chapter 2.3.2 --- separation and purification of dna from agarose gel --- p.31 / Chapter 2.3.3 --- Restriction digestionof DNA --- p.32 / Chapter 2.3.4 --- Ligation of DNA Fragments --- p.32 / Chapter 2.3.5 --- Transformation of --- p.32 / Chapter 2.3.6 --- Small Scale Plasmids Purification from DH5a --- p.32 / Chapter 2.4 --- construction of expression and reporter plasmids --- p.33 / Chapter 2.4.1 --- Construction of Estrogen Receptorα (Erα) Expression Vectors --- p.33 / Chapter 2.4.2 --- construction of reporter vectors of LDLR promoter and the Respective Mutants --- p.33 / Chapter 2.4.3 --- Construction of Reporter Vectors of APOAI Promoter and the Respective Mutants --- p.33 / Chapter 2.5 --- determination of promoter transcrtiption activities --- p.34 / Chapter 2.5.1 --- Transient Transfection of Cell with ERa Expression Vector and Promoter Reporter using Lipofectamine PLUS Reagent --- p.34 / Chapter 2.5.2 --- Dual Luciferase Assay --- p.34 / Chapter 2.6 --- semi-quantitative and quantitative rt-pcr assay --- p.34 / Chapter 2.6.1 --- Transient transfection of Cell with ERa Expression Vector Using Lipofectamine PLUS Reagent --- p.34 / Chapter 2.6.2 --- "Isolation of RNA using TRIzol® Reagent (Life Technology, USA)" --- p.35 / Chapter 2.6.3 --- Quantitation of RNA --- p.35 / Chapter 2.6.4 --- First Strand cDNA Synthesis --- p.35 / Chapter 2.6.5 --- Sem卜Quantitative PCR Reactions --- p.35 / Chapter 2.6.6 --- Quantitative PCR Reactions --- p.36 / Chapter 2.7 --- western blotting analysis --- p.36 / Chapter 2.8 --- statistical methods --- p.36 / Chapter CHAPTER 3 --- REGULATION BY PHYSIOLOGICAL LEVEL OF 17B-ESTRADIOL ON APOLIPOPROTEIN A-I AND LOW-DENSITY- LIPOPROTEIN RECEPTOR IN HEPG2 CELLS --- p.37 / Chapter 3.1 --- introduction --- p.37 / Chapter 3.2 --- results --- p.39 / Chapter 3.2.1 --- Determination of transient transfection functionality of estrogen receptors in hepg2 cells --- p.39 / Chapter 3.2.2 --- Effect of 17β-Estradiolon LDLR promoter transcription activity --- p.39 / Chapter 3.2.3 --- Effect of 17β-Estradiol on apoai promoter transcription activity --- p.40 / Chapter 3.2 --- discussion --- p.47 / Chapter CHAPTER 4 --- SOY ISOFLAVONES AND RESVERATROL DISPLAY DIFFERENT MECHANISM IN THE UP-REGULATION OF LOVV-DENSITY-LIPOPROTEIN RECEPTOR IN HEPG2 CELLS --- p.49 / Chapter 4.1 --- introduction --- p.49 / Chapter 4.2 --- results --- p.54 / Chapter 4.2.1 --- Association of ERα and isoflavones or resveratrol on LDLR promoter transcription activity --- p.54 / Chapter 4.2.2 --- Association of ERβ and isoflavones or resveratrol on LDLR promoter transcription activity --- p.54 / Chapter 4.2.3 --- "Role of MAP Kinase, PKA and PKC in isoflavones and resveratrol induced LDLR promoter transcription" --- p.55 / Chapter 4.2.4 --- Identification of promoter regions responsible for induction of LDLR transcription by isoflavones in the presence OF ERα --- p.55 / Chapter 4.2.5 --- Identification of promoter regions responsible for induction of LDLR TRANSCRIPTION BY resveratrol IN THE ABSENCE OF ERα --- p.56 / Chapter 4.3 --- DISCUSSION --- p.75 / Chapter CHAPTER 5 --- SOY ISOFLAVONES AND RESVERATROL UP-REGULATE APOLIPOPROTEIN A-I SIMILAR TO 17B-ESTRADIOL IN HEPG2 CELLS --- p.80 / Chapter 5.1 --- INTRODUCTION --- p.80 / Chapter 5.2 --- RESULTS --- p.84 / Chapter 5.2.1 --- Association of ERα phytoestrogens on APCAI gene expression --- p.84 / Chapter 5.2.2 --- Association of ERβ and isoflavones or resveratrol on APOAI promoter transcription activity --- p.85 / Chapter 5.2.3 --- "Role of MAP Kinase, PKA and PKC in isoflavones and resveratrol in APOAI promoter transcription in the presence of ERα" --- p.85 / Chapter 5.2.4 --- Identification of promoter regions responsible for induction of APOAI transcription by isoflavones and resveratrol in the presence of ERα --- p.85 / Chapter 5.3 --- DISCUSSION --- p.100 / Chapter CHAPTER 6 --- GENERAL DISCUSSION --- p.103 / Chapter CHAPTER 7 --- SUMMARY --- p.106 / BIBLIOGRAPHY --- p.108 / APPENDIX 1 ABBREVIATIONS --- p.126 / APPENDIX 2 MATERIALS AND METHODS --- p.129 / APPENDIX 3 PRIMER LISTS --- p.145 / APPENDIX 4 REAGENTS AND BUFFERS --- p.147