【摘要】 目的探讨脑活素对液压冲击伤后神经细胞内游离钙的作用。方法原代培养的神经细胞分(1)正常组,(2)创伤组:液压冲击致神经细胞创伤后24h和48h组,(3)脑活素治疗组:分别于神经细胞创伤后0、1h给予1.25ml.L-1脑活素治疗(0h给药和1h给药组)。用激光扫描共聚焦显微镜和Ca2+荧光探针Fluo-3/AM观察细胞创伤后24h和48h细胞内游离钙[Ca2+]i的变化。结果神经元细胞创伤后,伤后24h神经元胞质内钙离子浓度达高峰,48h仍维持在较高水平;脑活素0或1h治疗后,在24h均能明显减轻创伤神经元细胞内的钙超载,48h后只有1h给予脑活素的细胞钙离子强度降低。结论脑活素对创伤的神经细胞有保护作用,且具有治疗时间窗。更多还原

【Abstract】 Aim To investigate the changes of intracellular calcium in primary cultured neurons after fluid percussion injury under the effects of cerebrolysin.Methods The neurons of rats were divided into: normal group,FPI group and cerebrolysin group(0 h and 1 h treatment after fluid percussion injury(FPI)).The intracellular calcium([Ca2+]i) at rats neurons in 24 h and 48 h postinjury were measured by using the laser scanning confocal microscope under calcium fluorescent indicator Fluo-3/AM.Results The [Ca2+]i at rats neurons were markedly increased after 24 h postinjury compared with normal neurons and maintained the higher level after 48 h.Cerebrolysin,whenever added at 0h or 1h after FBI,could significantly decrease the rise of [Ca2+]i on 24 h postinjury,which only happened in 48 h postinjury by 1 h treatment after FPI.Conclusion Cerebrolysin has the protective effects on primary cultured rat cortical neurons of rats and has the time-window treatment.更多还原