摘要
目的:研究在固定时间和频率下,矩形波形低频脉冲磁场(LF-PMF)对大鼠心肌微血管内皮细胞(CMECs)迁移和NO分泌能力的影响。方法:实验分为4组(对照组,1.0MT组,1.4MT组,1.8MT组)。对照组不加磁场干预,其余各组分别在频率为15Hz,磁场强度分别为1.0MT、1.4MT和1.8MT,时间为4h/d,连续照射3d的条件下,用三角波形作用离体培养的大鼠CMECs。利用transwell检测细胞迁移能力,硝酸还原酶法检测CMECs培养液中NO含量的变化。结果:1.0MT组,1.4MT组和1.8MT组LF-PMF迁移能力与对照组相比均有不同程度提高[(24.40±5.12)(个/视野)vs(22.00±3.87)(个/视野),P<0.05;(31.40±3.81)(个/视野)vs(22.00±3.87)(个/视野),P<0.05;(37.40±4.01)(个/视野)vs(22.00±3.87)(个/视野),P<0.01]。1.0MT组,1.4MT组和1.8MT组LF-PMF的NO分泌能力与对照组相比均有提高[(25.26±1.06)(μmol/L)vs(19.18±2.88)(μmol/L),P<0.05;(29.44±1.10)(μmol/L)vs(19.18±2.88)(μmol/L),P<0.05;(39.52±1.25)(μmol/L)vs(19.18±2.88)(μmol/L),P<0.01]。结论:低频脉冲磁场磁场对CMECs的生物学作用与磁场的强度有一定关系,1.4M和1.8MT组LF-PMF促进细胞迁移,使NO分泌能力能力提高。
Ojective: To investigate the effects of rectangular low frequency pulsing magnetic fields (LF-PMFs) on the migration and NO secreting function of cardiac microvascular endothelial cells (CMECs). Methods: Cells were randomly divided into 4 groups (control group, 1.0 MT group, 1.4 MT group and 1.8 MT group) and CMECs except for those in control group were exposed to the rectangular low frequency pulsing magnetic fields (15 Hz) for 4 hours every day and cultured for 3 days. CMECs migration ability were examined by transwell. Results: After 3 days intervention, 1.0MT, 1.4 MT and 1.8 MT magnetic fields were found to have accelerated the migration[(24.40±5.12) (pre view) vs (22.00± 3.87) (pre view), P〈0.05 ;(31.40± 3.81) (pre view) vs (22.00± 3.87) (pre view), P〈0.05 ; (37.40±4.01) (pre view) vs (22.00± 3.87) (pre view), P〈0.01]. The NO secreting function of CMECs were also be accelerated [(25.26±1.06) (μmol/L)vs (19.18±2.88) (μmol/L),P〈0.05; (29.44± 1.10) (μmol/L)vs (19.18± 2.88) (μmol/L), P〈0.05; (39.52+ 1.25) (μmol/L) vs (19.18±2.88) (μmol/L), P〈0.01]. Conclusion: LF-PMF accelerates the migration and the NO secreting function of CMECs.
出处
《现代生物医学进展》
CAS
2010年第6期1027-1029,共3页
Progress in Modern Biomedicine
基金
国家自然科学基金项目资助(30600580)
关键词
心肌微血管内皮细胞
低频脉冲磁场
细胞迁移
NO分泌能力
Low frequency pulsed magnetic fields
Cardiac microvascular endothelial cells
Migration
NO secreting function