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The Effects of Heroin on Intracellular Free Ca2+ of Rat Myocardium
Author(s): 
Pages: 424-427
Year: Issue:  6
Journal: JOURNAL OF FORENSIC MEDICINE

Keyword:  二醋吗啡心肌细胞游离Ca2+;
Abstract: 目的 观察二醋吗啡对心肌细胞内游离Ca2+浓度的作用.方法 取自1~3 d的SD大鼠培养的心肌细胞,用荧光探针Fluo-3/AM负载心肌细胞,不同浓度及不同剂量的二醋吗啡作用心肌细胞,激光共聚焦显微镜下检测Ca2+的变化.结果 不同剂量及浓度的二醋吗啡对心肌细胞内游离Ca2+浓度有不同作用,一定浓度的二醋吗啡使心肌细胞内游离Ca2+浓度呈剂量依赖性的升高、短时间内心肌细胞[Ca2+]i荧光强度增强,并产生[Ca2+]i峰.结论 探索出二醋吗啡导致心肌细胞内Ca2+变化的有效浓度,为进一步深入研究打下了基础.
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