Effect of 4-aryl-2-methyl-5-nitro-1,4-dihydropyridine-3-carboxylates on the guinea pig papillary muscle and isolated human vena saphena magna that is used for coronary artery bypass grafting
作者:Vida Garaliene、Vygantas Barsys、Antanas Mačys、Brigita Vigante、Aivars Krauze
DOI:10.1016/j.ejmech.2011.07.018
日期:2011.9
4-dihydropyridine-3-carboxylate on the lengthening of cardiac APD were related to certain potassium channels (e.g., IK1, KATP and IK); and (iii) the modulation of the contraction-relaxation effects on isolated human vena saphena magna samples using three 5-nitro-substituted 1,4-dihydropyridine derivatives, displaying the positive inotropic and AP duration effects. Methods The experiments were conducted on isolated
背景 这项研究的目的是估计:(i)5-硝基取代的1,4-二氢吡啶以及Bay K 8644(CAS [71145-03-4])和CGP 28392(CAS [89289-93] -0])对孤立的豚鼠乳头肌的心脏动作电位持续时间(APD)和等距收缩;(ii)4-(2-二氟甲氧基苯甲基)-2-甲基-5-硝基-1,4-二氢吡啶-3-羧酸2-丙氧基乙基酯对心脏APD延长的影响是否与某些钾通道有关(例如,I K1,K ATP和I K);(iii)使用三种5-硝基取代的1,4-二氢吡啶衍生物对分离的人腔静脉大肠样品的收缩松弛作用的调节,表现出正性肌力和AP持续时间的作用。 方法 实验是从成年豚鼠的分离的人腔静脉大白鼠样品和乳头肌上进行的。分别使用力传感器和微电极技术记录等距收缩和AP。 结果 4-(2-二氟甲氧基苯基)-2-甲基-5-硝基-1,4-二氢吡啶-3-羧酸2-丙氧基乙酯以浓度依赖的方式显着增加