摘要
目的 观察恒磁场对离体人脐动脉血管平滑肌细胞 (VSMC)增殖的影响。方法 血管紧张素Ⅱ (AngⅡ )刺激人VSMC建立细胞增殖模型 ,置于 1mT和 5mT的恒磁场中培养 48h ,用四唑盐比色法和3H TdR参入法检测两组VSMC的增殖数量 ,流式细胞仪分析细胞周期。结果 恒磁场能逆转AngⅡ所致的人VSMC增殖数量增多 ,阻止VSMC由静止期 (G0 G1 期 )进入DNA合成期 (S期 )和有丝分裂期 (G2 M期 )。结论 平均磁感应强度为 1、5mT的恒磁场抑制VSMC增殖。
Objective To observe the effects of constant magnetic fields (CMF) on angiotensinⅡ (AngⅡ)-stimulated proliferation of human umbilical arterial vascular smooth muscle cells (VSMC). Methods The experimental proliferation models of cultured human umbilical arterial VSMC stimulated with AngⅡ was establishea. The VSMC were cultured under 1 and 5 mT CMF for 48 hrs. Proliferation of the VSMC was detected by MTT and 3H-TdR incorporation method (A-value and cpm-value), and cell cycle was analyzed by flow cytometry. Results The CMF of 1 and 5 mT may antagonize proliferation of VSMC stimulated with AngⅡ, and hold-back VSMC from static phase (G 0/G 1)to DNA synthetic (S) and mitotic phase (G 2/M). Conclusion The study demonstrates that CMF of 1 and 5 mT can significantly inhibit the human VSMC proliferation.
出处
《中国介入心脏病学杂志》
2003年第1期43-44,共2页
Chinese Journal of Interventional Cardiology
