Atovaquone-Proguanil in Combination With Artesunate to Treat Multidrug-Resistant P. falciparum Malaria in Cambodia: An Open-Label Randomized Trial.
Atovaquone-Proguanil in Combination With Artesunate to Treat Multidrug-Resistant P. falciparum Malaria in Cambodia: An Open-Label Randomized Trial.
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阿托伐醌-氯胍与青蒿琥酯联合治疗柬埔寨的耐多药恶性疟原虫疟疾:一项开放标签随机试验。
DOI:
10.1093/ofid/ofz314
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发表时间:
2019
影响因子:
4.2
通讯作者:
Wongarunko
中科院分区:
文献类型:
--
作者:
Wojnarski,Mariusz;Lon,Chanthap;Vanachayangkul,Pattaraporn;Gosi,Panita;Sok,Somethy;Rachmat,Agus;Harrison,Dustin;Berjohn,CatherineM;Spring,Michele;Chaoratanakawee,Suwanna;Ittiverakul,Mali;Buathong,Nillawan;Chann,Soklyda;Wongarunko
BackgroundRecent artemisinin-combination therapy failures in Cambodia prompted a search for alternatives. Atovaquone‐proguanil (AP), a safe, effective treatment for multidrug-resistantPlasmodium falciparum(P.f.), previously demonstrated additive effects in combination with artesunate (AS).MethodsPatients withP.f.or mixed-species infection (n = 205) in Anlong Veng (AV; n = 157) and Kratie (KT; n = 48), Cambodia, were randomized open-label 1:1 to a fixed‐dose 3-day AP regimen +/-3 days of co‐administered artesunate (ASAP). Single low-dose primaquine (PQ, 15 mg) was given on day 1 to prevent gametocyte-mediated transmission.ResultsPolymerase chain reaction–adjusted adequate clinical and parasitological response at 42 days was 90% for AP (95% confidence interval [CI], 82%–95%) and 92% for ASAP (95% CI, 83%–96%;P= .73). The median parasite clearance time was 72 hours for ASAP in AV vs 56 hours in KT (P< .001) and was no different than AP alone. At 1 week postprimaquine, 7% of the ASAP group carried microscopic gametocytes vs 29% for AP alone (P= .0001). Nearly allP.f.isolates had C580Y K13 propeller artemisinin resistance mutations (AV 99%; KT 88%). Only 1 of 14 treatment failures carried the cytochrome bc1 (Pfcytb) atovaquone resistance mutation, which was not present at baseline.P.f.isolates remained atovaquone sensitive in vitro but cycloguanil resistant, with a tripleP.f.dihydrofolate reductase mutation.ConclusionsAtovaquone-proguanil remained marginally effective in Cambodia (≥90%) with minimal Pfcytb mutations observed. Treatment failures in the presence of ex vivo atovaquone sensitivity and adequate plasma levels may be attributable to cycloguanil and/or artemisinin resistance. Artesunate co-administration provided little additional blood-stage efficacy but reduced post-treatment gametocyte carriage in combination with AP beyond single low-dose primaquine.
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影响因子:
158.5
作者:
STENMARK, KR;JAMES, SL;MURPHY, RC
通讯作者:
MURPHY, RC
DOI:
10.1152/ajplung.1990.258.4.l179
发表时间:
1990
期刊:
The American journal of physiology
影响因子:
--
作者:
Cott,GR;Westcott,JY;Voelkel,NF
通讯作者:
Voelkel,NF
DOI:
10.1016/s0021-9258(19)57375-6
发表时间:
1988-01
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Jacques A. MacloufS;R. C. Murphy
通讯作者:
Jacques A. MacloufS;R. C. Murphy
DOI:
--
发表时间:
1986
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Eling,TE;Danilowicz,RM;Henke,DC;Sivarajah,K;Yankaskas,JR;Boucher,RC
通讯作者:
Boucher,RC
DOI:
--
发表时间:
1987
期刊:
Prostaglandins
影响因子:
--
作者:
J. Zakrzewski;N. Barnes;P. Piper;J. Costello
通讯作者:
J. Costello