中国寄生虫学与寄生虫病杂志 ›› 1994, Vol. 12 ›› Issue (1): 31-33.

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云南省恶性疟原虫对氯喹抗性的纵向监测

杨恒林,杨品芳,董莹,车立刚,何慧,刘德全,刘瑞君,詹斌,张春勇,高大庆   

  1. 云南省疟疾防治研究所; 中国预防医学科学院寄生虫病研究所
  • 收稿日期:2017-01-06 修回日期:2017-01-06 出版日期:1994-02-28 发布日期:2017-01-06

LONGITUDINAL SURVEILLANCE OF CHLOROQUINE RESISTANCE OF PLASMODIUM FALCIPARUM AFTER CESSATION OF MEDICATION IN SOUTH YUNNAN 

  • Received:2017-01-06 Revised:2017-01-06 Online:1994-02-28 Published:2017-01-06

摘要: 应用WHO推荐的体外微量测定法于停用氯喹前的1981年及停药后的1984、1988—1990和1992年在云南省南部的勐腊县测得恶性疟原虫对氯喹的抗性率分别为97.4%、100%、96.1%及93.7%;ID50依次为170、132、125及110nmol/L,ID95为1000、740、707及576nmol/L;平均抑制量分别为55.4、46.7、45.8及35.4pmo1/井。与1981年测得结果相比,抗性率无明显变化;ID50分别下降22.3%(P<0.05)、26.4%(P<0.05)及35.3%(P<0.01),ID95依次下降26.0%(P<0.05)、29.3%(P<0.05)及42.4%(P<0.01)。平均抑制量分别下降15.7%(P>0.05)、17.3%(P<0.05)及36.1%(P<0.01)。提示云南南部恶性疟原虫对氯喹的抗性并不稳定,而是随药物压力的下降而降低。

关键词: 恶性疟原虫, 抗性, 氯喹, 体外微量法, 纵向监测

Abstract: The resistance of P.falciparum to chloroquine was assayed by in vitro microtest in 1981 and after cessation of medication in 1984 , 1988- 1990 and 1992 in south Yunnan Province of China.The resistance rates were 97.4% (38/ 39) , 100% (25/ 25) , 96.1% (73/ 76) and 93.7% (59/ 63) ,respectively;ID 50 were 170,132 , 125 and 110 nmol/L ;ID 95 were 1 000,740 , 707 and 576nmol/ L;mean dosages for complete inhibition of schizont formation were 55.4 , 46.7 , 45.8 and 35.4 (pmol/well).A comparison of the results in 1981 , 1984 , 1988- 1990 and 1992 ,the resistance rate showed no marked change,ID 50 dropped 22.3% ( P 0.05) , 26.4% ( P 0.05) and 35.3% ( P 0.01) ;ID 95 declined 26.0% ( P 0.05) , 29.3% ( P 0.05) and 42.2% ( P 0.01) ;mean dosage of inhibition dropped 15.7% ( P 0.05) , 17.3% ( P 0.05) and 36.1% ( P 0.01) . The results show that the extent of resistance in chloroquine resistant P. falciparum to chloroquine in south Yunnan has been declined markedly,indicating that coresistance was variable and dropped along with the declining of drug pressure.

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