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b-adrenoceptor-mediated vasorelaxation in rat isolated mesenteric arteries. / Beta-adrenoceptor-mediated vasorelaxation in rat isolated mesenteric arteriesJanuary 1998 (has links)
Kai Hong Kwok. / Thesis submitted in: December 1997. / Thesis (M.Phil.)--Chinese University of Hong Kong, 1998. / Includes bibliographical references (leaves 90-98). / Abstract also in Chinese. / Chapter Chapter 1 --- Introduction / Chapter 1.1. --- Classification of β-adrenoceptor in cardiovascular system --- p.1 / Chapter 1.2. --- Vasodilator effects of β-adrenoceptor-agonists and their mechanisms --- p.4 / Chapter 1.3. --- Role of endothelium in β-adrenoceptor-mediated vasodilation --- p.7 / Chapter 1.4. --- Role of K+ channels in β-adrenoceptor-mediated relaxation --- p.11 / Chapter 1.5. --- Other aspect regarding the vascular response to stimulation of B-adrenoceptor --- p.15 / Chapter 1.6. --- Clinical aspect of B-adrenoceptor agents --- p.15 / Chapter Chapter 2 --- Methods and Materials / Chapter 2.1. --- Tissue Preparation --- p.19 / Chapter 2.1.1. --- Preparation of the isolated rat mesenteric artery --- p.19 / Chapter 2.1.2. --- Removal of the functional endothelium --- p.19 / Chapter 2.1.3. --- Organ bath set-up --- p.20 / Chapter 2.1.4. --- Length-tension relationship and an optimal resting tension --- p.22 / Chapter 2.2. --- Experimental Procedure --- p.22 / Chapter 2.2.1. --- Relaxant effects of the B-adrenoceptor agonists --- p.24 / Chapter 2.2.2. --- Effects of putative K+ channel blockers --- p.24 / Chapter 2.2.3. --- Effects of inhibitors of nitric oxide activity --- p.25 / Chapter 2.2.4. --- Effect of indomethacin --- p.25 / Chapter 2.2.5. --- "Effects of K+ channel opener, nitric oxide donor and forskolin" --- p.26 / Chapter 2.3. --- Chemicals and Solutions --- p.26 / Chapter 2.3.1. --- Chemicals and drugs --- p.26 / Chapter 2.3.2. --- Preparation of drug stock solutions --- p.26 / Chapter 2.3.3. --- Solutions --- p.28 / Chapter 2.4. --- Statistical Analysis --- p.28 / Chapter Chapter 3 --- Results / Chapter 3.1. --- Relaxant Effect of Isoprenaline --- p.29 / Chapter 3.1.1. --- Relaxant effect of isoprenaline --- p.29 / Chapter 3.1.2. --- Effects of inhibitors of nitric oxide activity --- p.29 / Chapter 3.1.3. --- Effect of charybdotoxin on the vasorelaxant response to isoprenaline --- p.32 / Chapter 3.1.4. --- Effect of glibenclamide on the vasorelaxant response to isoprenaline --- p.32 / Chapter 3.1.5. --- Effect of TPA+ on isoprenaline-induced relaxation --- p.36 / Chapter 3.1.6. --- Effect of TPA+ in the presence of iberiotoxin or glibenclamide --- p.36 / Chapter 3.1.7. --- Effect of Ba2+ on the vasorelaxant effect of isoprenaline --- p.41 / Chapter 3.1.8. --- Effect of raising extracellular K+ on isoprenaline-mediated relaxation --- p.41 / Chapter 3.2. --- Relaxant Effect of Dobutamine --- p.44 / Chapter 3.2.1. --- Effects of inhibitors of endothelium-derived factors on the relaxant effect of dobutamine --- p.44 / Chapter 3.2.2. --- Antagonism of the effect of dobutamine by β1-adrenoceptor antagonist --- p.44 / Chapter 3.2.3. --- Effects of putative Kca channel blockers on the relaxant effect of dobutamine --- p.51 / Chapter 3.2.4. --- Effect of TPA+ on the relaxant effect of dobutamine --- p.55 / Chapter 3.2.5. --- Effect of raising extracellular K+ on the relaxant effect of dobutamine --- p.55 / Chapter 3.3. --- Relaxant Effect of Fenoterol --- p.57 / Chapter 3.3.1. --- Effect of inhibitors of nitric oxide activity on the relaxant effect of fenoterol --- p.57 / Chapter 3.3.2. --- Effect of charybdotoxin on the relaxant effect of fenoterol --- p.57 / Chapter 3.3.3. --- Effect of TPA+ on the relaxant effect of fenoterol --- p.64 / Chapter 3.3.4. --- Effect of glibenclamide on the relaxant effect of fenoterol --- p.64 / Chapter 3.3.5. --- Effect of raising extracellular K+ on fenoterol-mediated relaxation --- p.64 / Chapter 3.4. --- Effects of cAMP- and cGMP-elevating agents --- p.69 / Chapter 3.4.1. --- Effects of inhibitors of endothelium-derived factors on the relaxation induced by nitroprusside and forskolin --- p.69 / Chapter 3.4.2 --- Effect of charybdotoxin on relaxant effect of forskolin --- p.69 / Chapter 3.4.3 --- Effect of Ba2+ on the vasorelaxant effect of forskolin --- p.76 / Chapter 3.4.4 --- Effect of TPA+ on the relaxant effect of forskolin --- p.76 / Chapter 3.4.5 --- Effect of glibenclamide on the relaxant effects of forskolin and cromakalim --- p.76 / Chapter Chapter 4 --- Discussion / Chapter 4.1. --- Effect of Isoprenaline and Fenoterol --- p.77 / Chapter 4.2. --- Effect of Dobutamine --- p.83 / Chapter 4.3. --- Conclusion --- p.88 / References --- p.90 / Publications --- p.98
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