4 . contraction induced by 60 mmol / l kc1 was completely inhibited by nfa and nppb . 5 阴离子通道阻断剂nfa 、 nppb都能够抑制由60mmol lkci引起的血管收缩。
6 . the anion channel blockers nfa and nppb inhibited the ne - induced contraction of vessels in ca2 + - free solution 细胞外液中na的存在与否对ne引起的血管收缩无明显影响。
Various mechanisms have been reported , including vasoconstrictor substances , pharmacologic stimuli , and neurohumoral effects 各种机转曾被报告过,包括促血管收缩物质,药物的刺激及神经荷尔蒙的影响。
Blood that is poor in nitric oxide will scavenge the gas from other tissues , causing the vessels in those tissues to constrict 一氧化氮含量低的血液将会把其他组织中的气体一扫而空,从而导致这些组织中的血管收缩。