METHODS NE, histamine, KCl and phenylephedrinum were used to induce the contraction of the rabbit aortic strip.
方法以去甲肾上腺素（NE）、组胺、高钾和苯肾上腺素引起兔主动脉条收缩；
Antihistamines have been used clinically for many years. They have anti-allergic effect by blocking histamine H_1 receptor.
抗组胺药物在临床上已应用多年，其机理主要是通过阻断H_1受体而起抗过敏作用。
Since exogenous dopamine is commonly used to treat patients of cardiovascular failure, its action on the histamine-sensitized airways is critical for asthmatic subjects.
由于多巴胺常被用来做为升压剂，它在已被组织胺敏感化的气道的作用可能有临床的意义。
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