In-vitro Sensitivity of Plasmodium falciparum to the Components of Dihydroartemisinin Compounds in Dongfang City of Hainan Province
- VernacularTitle:海南省东方市恶性疟原虫对双氢青蒿素复方组分敏感性的体外检测
- Author:
Lailai LIU
;
Peiquan CHEN
;
Fengzhen OU
;
Chongwei FU
- Publication Type:Journal Article
- Keywords:
MALARIA, FALCIPARUM / TCD therapy;
PLASMODIUM FALCIPARUM;
DIHYDROARTEMISININ COMPOUNDS / therapeutic effects;
SENSITIVITY AND SPECIFICITY
- From:
Journal of Guangzhou University of Traditional Chinese Medicine
2004;0(05):-
- CountryChina
- Language:Chinese
-
Abstract:
[Objective] To examine the sensitivity of P. falciparum to the components of dihydroartemisinin (DHA) and piperaquine (PQ) in Dihydroartemisinin Compounds. [Methods] WHO (World Health Organization) standard micro test and in-vitro test were used. [Results] Survey in the year of 2001 for 61 cases and in 2004 for 28 cases showed that the DHA-resistant rate of P. falciparum in all cases was zero with inhibitory concentration of 50% (IC50) being 6.84 nmol/L and 5.67 nmol/L, and the mean concentration for complete inhibition of schizont formation was 35 nmol/L and 39 nmol/L, respectively. Survey in the year of 2001 for 75 cases and in 2004 for 29 cases showed that PQ-resistant rate of P. falciparum was 22.67% and 17.24% with IC50 being 274 nmol/L and 317 nmol/L, and the mean concentration for complete inhibition of schizont formation was 1 220 nmol/L and 1 269 nmol/L, respectively. [Conclusion] No DHA -resistance exists and PQ-resistance decreases for the treatment of P. falciparum in Dongfang city of Hainan province.
