中国寄生虫学与寄生虫病杂志 ›› 2002, Vol. 20 ›› Issue (2): 5-85.

• 论著 • 上一篇    下一篇

瑞香素体外抗疟作用与其铁螯合能力的关系(英文)

牟凌云;王琴美;倪奕昌
  

  1. 中国疾病预防控制中心寄生虫病预防控制所 上海200025
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2002-04-30 发布日期:2002-04-30

In vitro Antimalarial Effect of Daphnetin Relating to Its Iron-chelating Activity

MU Ling-yun;WANG Qin-mei;NI Yi-chang **
  

  1. Institute of Parasitic Disease, Chinese center for Disease Control and Prewention, shanghai 200025
  • Received:1900-01-01 Revised:1900-01-01 Online:2002-04-30 Published:2002-04-30

摘要:   目的 研究瑞香素体外抗疟作用与其铁螯合能力的关系。 方法 在恶性疟原虫FCC1株常规方法体外培养中检测瑞香素和去铁胺杀裂殖体活性。利用荧光探针calcein测定瑞香素和去铁胺的铁螯合能力。 结果 与强铁螯合剂去铁胺相比 ,瑞香素具有中度的铁螯合能力。体外实验中瑞香素在 0~ 12 μmol/L剂量范围内有剂量依赖性的杀裂殖体活性。瑞香素与Fe2 + 按 2∶1混合后 ,抗疟作用明显下降。 结论 瑞香素的抗疟作用与它的铁螯合能力有关。

关键词: 恶性疟原虫, 瑞香素, 去铁胺, calcein

Abstract:  Objective To investigate the in vitro antimalarial effect of daphnetin relating to its iron-chelating activity. Methods Schizontocidal activity of daphnetin and desferrioxamine B was tested through an in vitro assay based on the routine in vitro cultivation of Plasmodium faciparum FCC1 strain. The iron-chelating ability of each was measured by the fluorescent probe calcein. Results Daphnetin exhibited a modest iron-chelating ability compared with the powerful iron-chelator desferrioxamine B. In vitro test at the range of 0-12 μmol/L daphnetin showed a dose-dependent schizontocidal activity which could be inhibited if mixed with Fe 2+ in a ratio of 2∶1. Conclusion The dose-dependent antimalarial activity of daphnetin is related to its iron-chelating activity.

Key words: Plasmodium falciparum, daphnetin, desferrioxamine B, calcein