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首页> 外文期刊>Emerging Infectious Diseases >Nationwide Monitoring for Plasmodium falciparum Drug-Resistance Alleles to Chloroquine, Sulfadoxine, and Pyrimethamine, Haiti, 2016–2017
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Nationwide Monitoring for Plasmodium falciparum Drug-Resistance Alleles to Chloroquine, Sulfadoxine, and Pyrimethamine, Haiti, 2016–2017

机译:对氯喹,磺胺肟和吡米甲胺,海地,2016-2017的抗血浆耐药等位基因的全国性监测

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Haiti is striving for zero local malaria transmission by the year 2025. Chloroquine remains the first-line treatment, and sulfadoxine/pyrimethamine (SP) has been used for mass drug-administration pilot programs. In March 2016, nationwide molecular surveillance was initiated to assess molecular resistance signatures for chloroquine and SP. For 778 samples collected through December 2017, we used Sanger sequencing to investigate putative resistance markers to chloroquine (Pfcrt codons 72, 74, 75, and 76), sulfadoxine (Pfdhps codons 436, 437, 540, 581, 613), and pyrimethamine (Pfdhfr codons 50, 51, 59, 108, 164). No parasites harbored Pfcrt point mutations. Prevalence of the Pfdhfr S108N single mutation was 47%, and we found the triple mutant Pfdhfr haplotype (108N, 51I, and 59R) in a single isolate. We observed no Pfdhps variants except in 1 isolate (A437G mutation). These data confirm the lack of highly resistant chloroquine and SP alleles in Haiti and support the continued use of chloroquine and SP.
机译:海地致力于2025年的零当地疟疾传播。氯喹仍然是第一线治疗,磺肟/吡米甲胺(SP)已被用于大规模药物管理试验计划。 2016年3月,启动了全国分子监测,以评估氯喹和SP的分子耐药鉴定。在2017年12月收集的778个样本中,我们使用Sanger测序来研究氯喹(PFCRT密码子72,75和76),磺肟(PFDHPS密码子436,436,540,581,613)和吡米甲胺( PFDHFR密码子50,51,59,108,164)。没有寄生虫患有pfcrt点突变。 PFDHFR S108N单突变的患病率为47%,我们发现单个分离物中的三重突变体PFDHFR单倍型(108N,51i和59r)。除了1个分离物(A437G突变)中,我们观察到没有PFDHPS变体。这些数据证实了海地缺乏高抗氯喹和SP等位基因,并支持氯喹和SP的继续使用。

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