双氢青蒿素和奎宁对恶性疟原虫早期配子体作用的随机比较

Comparative Studies on Effects of Dihydroartemisinin and Quinine on Plasmodium Falciparum Gametocytes at Early Stage

【目的】研究双氢青蒿素对恶性疟原虫早期配子体的抑杀作用。【方法】仅骨髓带恶性疟原虫早期配子体而骨髓与外周血液均无成熟配子体的患者 11例 ,随机分为A、B 2组。A组 6例口服双氢青蒿素片 7d总量 4 80mg ;B组 5例口服硫酸奎宁片 7d总量 10 50 0mg ,定时取骨髓和外周血液涂片 ,观察两组配子体密度的变化。【结果】A组骨髓早期配子体药后 10d全部转阴 ;而B组全部阳性 ,至药后 14d仍有 2 / 5例阳性。外周血液配子体转阴时间 ,A组为 ( 4 .8± 0 .9)d ;B组为 ( 2 2 .0± 5.8)d。【结论】双氢青蒿素能杀灭恶性疟原虫早期配子体 。

Objective To study the effects of dihydroartemisinin and quinine on plasmodium falciparum gametocytes at early stage. Methods Eleven patients with falciparum malaria who had plasmodium falciparum gametocytes at early stage(PFGe) in bone marrow but no matured plasmodium falciparum gametocytes(PFGm) in bone marrow and peripheral blood were allocated to two groups.Group A(n=6) were administered orally with dihydroartemisinin at a total dosage of 480mg for 7 days and Group B(n=5) with quinine sulfate at a total dosage of 10?500 mg for 7 days.The number of gametocytes in bone marrow and peripheral blood was examined at regular time. Results PFGe in bone marrow disappeared in Group A on 10 th day after the first administration while existed in all the cases of Group B on 10 th day and still in 2 cases on 14 th day.The clearance time for peripheral PFGe was 4.8±0.9 days in Group A and 22.0±5.8 days in Group B. Conclusion Dihydroartemisinin can clear PFGe but quinine shows no this action.