高肺血流量及长期雾化吸入硝酸甘油对肺血管舒张反应的影响

被引:5
作者
张春雨
杜军保
范瑾
斯琴
机构
[1] 北京大学第一医院儿科,北京大学第一医院儿科,北京大学第一医院儿科,中国医学科学院基础医学研究所病理生理教研室,,
关键词
硝酸甘油; 雾化吸入; 内皮; 舒张; 高肺血流量;
D O I
暂无
中图分类号
R363 [病理生理学];
学科分类号
100104 ;
摘要
目的 以左向右分流的大鼠为对象 ,观察高肺血流量及长期雾化吸入硝酸甘油 (NTG)对肺血管舒张反应的影响。方法 雄性Wistar大鼠 1 7只 ,分为吸入组 (n =5)、分流组 (n =5)和对照组 (n =7)。分流组和吸入组用手术造成腹主动脉和下腔静脉之间左向右分流。手术后饲养 1 2周 ,开始压力喷射雾化吸入。吸入组吸入NTG ,分流组和对照组吸入生理盐水 ,每日吸一次 ,每次吸 1 0min ,共吸 3周。之后取肺动脉环离体灌流 ,观察其对乙酰胆碱 (Ach)、硝普钠、NTG的舒张反应。结果 与对照组相比 ,吸入组和分流组的肺动脉环对Ach舒张反应明显减弱 (P <0 .0 5) ;三组血管环对硝普钠和NTG舒张反应无明显差别。结论 高肺血流量产生的高切应力损伤了肺动脉对Ach的舒张功能 ,长期雾化吸入NTG没有使之改善。
引用
收藏
页码:157 / 159
页数:3
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