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Hypolipidemic, antioxidative and vascular effects of soy leaves (Glycine max L. Merr.).January 2001 (has links)
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
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