Účinky vybraných isoflavonoidů in vitro na izolované aortě potkana ; The in vitro effects of selected isoflavonoids on isolated rat aorta

Charles University in Prague Faculty of Pharmacy in Hradec Králové Department of Pharmacology and Toxicology Student: Alena Novýsedláková Supervisor: PharmDr. Jana Pourová, PhD. Title of Thesis: In vitro effects od selected isoflavonoids on isolated rat aorta Abstract: The aim of this study was to determine whether the selected isoflavonoids are able to vasodilate aorta, what structural features might be responsible for a relaxing activity and estimate the mechanism of action. The experiment we carried out the classical in vitro method on the isolated rat aorta, and the results evaluated by the computer program GraphPad. Only glycitin did not show statistically significant relaxation of blood vessels, which can be attributed to ineffective glycosidic form. Other izoflavonoids- glycitein, daidzein and tectorigenin seem to be promising in terms of potential vasodilatation. Further studies would be needed to verify also the in vivo effects. Likely structural features include the hydroxy group at 7-position and a methoxy group at position 8 of the core od isoflavonoids. The mechanism of action is not yet known, but most likely appears endothelium-dependent mechanisms, alpha 1 receptor antagonism and agonism of muscarinic M3 receptor. It may be also involved in the effect of the antioxidant and. ; Univerzita Karlova v Prahe Farmaceutická fakulta v Hradci Králové Katedra farmakológie a toxikológie Študentka: Alena Novýsedláková Školiteľ: PharmDr. Jana Pourová, PhD. Názov diplomovej práce: Účinky vybraných izoflavonoidov in vitro na izolovanej aorte potkana Abstrakt: Cieľom tejto práce bolo zistiť, či sú vybrané izoflavonoidy schopné vazodilatovať aortu, aké štruktúrne rysy by mohli byť za relaxačné pôsobenie zodpovedné a odhadnúť predpokladaný mechanizmus účinku. Pokus sme previedli klasickou in vitro metódou na izolovanej aorte potkana a výsledky vyhodnotili pomocou počítačového programu GraphPad. Jediný glycitin nepreukázal štatisticky signifikantnú relaxáciu cievy, čo možno prisúdiť neúčinnej glykozidickej forme. ...