舒马曲坦对大鼠肺动脉平滑肌细胞的促有丝分裂作用

被引:5
作者
高山红
王怀良
李峥
陶慧林
机构
[1] 中国医科大学临床药理学教研室,中国医科大学临床药理学教研室,解放军医院药剂科,鞍山市中心医院药剂科辽宁沈阳,辽宁沈阳,辽宁沈阳,辽宁鞍山
关键词
舒马曲坦; 肺动脉; 受体,5-羟色胺; 肌,平滑,血管; 细胞,培养的;
D O I
暂无
中图分类号
R965 [实验药理学];
学科分类号
摘要
目的 观察 5 HT1B/1D受体激动剂舒马曲坦对肺动脉平滑肌细胞 (PASMC)的促有丝分裂作用 ,探讨其作用机制和诱发肺血管构型重建的可能性。方法 分离培养大鼠PASMC ,用噻唑蓝 (MTT)法检测细胞增殖 ,用流式细胞术法分析细胞周期和DNA合成。结果 MTT法检测 5 羟色胺 (5 HT) 0 .0 1,0 .1,1.0 μmol·L- 1可促进PASMC增殖 ,增殖率分别增加2 0 1% ,2 2 8%和 2 5 6 %。舒马曲坦 0 .0 1,0 .1,1.0μmol·L- 1可促进PASMC增殖 ,增殖率分别增加199% ,2 2 0 %和 2 4 5 %。流式细胞术分析 5 HT 0 .1和1.0 μmol·L- 1组的细胞增殖指数分别为 2 2 .2 %和2 5 .9% ,S期细胞分数分别为 7.2 %和 9.8%。舒马曲坦 0 .1和 1.0 μmol·L- 1组的增殖指数分别为2 1.2 %和 2 3.9% ,S期细胞分数分别为 6 .6 %和8.8% ,均较对照组明显增高 (P <0 .0 5 )。 5 HT和舒马曲坦能够促进PASMC从G0 /G1期进入S期 ,5 HT的促有丝分裂作用可能有 5 HT1B/1D受体的参与。结论 舒马曲坦能促进PASMC的增殖。 5 HT1B/1D 受体在PASMC增殖和肺血管构型重建中有重要作用。舒马曲坦有致肺动脉高压的风险
引用
收藏
页码:262 / 265
页数:4
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