非洛地平对野百合碱所致大鼠肺动脉高压的作用

被引:5
作者
曾志羽
黄海
李醒三
机构
[1] 广西医科大学附属第一医院心血管病研究所,广西医科大学附属第一医院心血管病研究所,广西医科大学附属第一医院心血管病研究所南宁,南宁,南宁
关键词
非洛地平; 野百合碱; 高血压,肺性; 大鼠;
D O I
暂无
中图分类号
R543.2 [肺动、静脉疾病];
学科分类号
摘要
目的 利用野百合碱 (MCT)制作的大鼠肺动脉高压模型 ,探讨非洛地平对MCT所致肺动脉高压的作用。方法 雄性Wistar大鼠 30只 ,随机分为肺动脉高压模型组 (H组 ) ,非洛地平治疗肺动脉高压组 (F组 ) ,对照组 (C组 ) ,每组 1 0只。予MCT(60mg/kg)复制肺动脉高压大鼠模型后 ,分别给F组及C组大鼠非洛地平 (5mg·kg- 1 ·d- 1 )和生理盐水 (0 .5ml·kg- 1 ·d- 1 )腹腔注射 4周 ,然后测定右室收缩压 (RVSP)和静脉血浆及心、肺组织匀浆内皮素样免疫反应物 (ir ET)、降钙素基因相关肽(CGRP)的含量 ,观察电镜下心肌组织的改变。结果 H、F、C组大鼠RVSP分别为 (44.6± 4 .4)mmHg、(30 .3± 2 .1 )mmHg、(1 8.7± 2 .2 )mmHg ,三组间比较 (P分别 <0 .0 5、<0 .0 1 ) ;H、F组大鼠心、肺组织匀浆中CGRP分别为 (84± 1 9)pg/ml、(2 2± 4)pg/ml、(2 0 .9± 1 .6)pg/ml,(1 4 9± 2 1 )pg/ml、(2 9± 3)pg/ml、(2 7.5± 2 .9)pg/ml,两组间比较 (P <0 .0 5)。非洛地平能显著抑制MCT大鼠模型引起的肺小动脉中膜肥厚 ,减少心肌组织的破坏 ,抑制MCT所致肺动脉高压大鼠模型的血浆及CGRP的减少。结论 长期使用非洛地平能有效防治MCT所致肺动脉高压 ,其作用可能与其Ca2 + 拮抗作用及CGRP降解减少有关。
引用
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页码:16 / 19+68
页数:5
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