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在家兔离体肺动脉上观察到酚苄明(Phenoxybengamine POB)不仅具有稍迟(4小时)发生的肾上腺素α_1受体阻断作用,还具有早期(作用半小时)的阻断甲氧胺、多巴胺等自身增强的血管收缩作用。
Phenoxybengamine POB was observed in isolated pulmonary arteries of rabbits not only to have a blockade of the adrenaline α 1 receptor occurring slightly later (4 hours), but also to block the early (for half an hour) block of methoxyamine, Dopamine and other self-enhanced vasoconstriction.