摘要
向培养心肌细胞中加入黄嘌呤-黄嘌呤氧化酶(X-XOD)后,动作电位的APA、OS、V_(max)及APD减少,MDP、TP水平上移;细胞在MEM中搏动率降低,加钡后细胞收缩频率迅速增加,且X-XOD作用时间越长,上述改变越显著。X-Mo的作用与此类似,但较轻。加硒则能逆转上述的细胞损伤性变化。这表明X-XOD和X-Mo均能造成心肌细胞损伤,硒对心肌细胞有保护作用。
When cultured heart cells were exposed to X-XOD containing medium, the absolute values of APA, OS, Vmax, APD, MDP, TP decreased; the percentage of beating clusters reduced in single MEM medium, but the frequency increased sharply in Ba containing medium. The longer the period exposed to X-XOD, the more significant are the variations of the electrical and contractile indices. The effects of X-Mo was similar to that of X-XOD, but to a slightly less extent. Se significantly converted all the indices. It is concluded that X-XOD can induce serious injury of cultured myocytes, and so does the X-Mo, while Se can protect the cells from the injury.
出处
《中国病理生理杂志》
CAS
CSCD
北大核心
1991年第3期281-285,共5页
Chinese Journal of Pathophysiology
关键词
心肌
再灌注损伤
硒
游离基炎
保护
Cells, cultured
Free radicals
Selenium
Action potential
Membranes
