Lancet Infect Dis:青蒿素抗性疟原虫在缅甸的传播

2015-02-23 赵洲 MedSci原创

青蒿素是从植物黄花蒿茎叶中提取的有过氧基团的倍半萜内酯药物,对治疗疟疾具有很好的效果。但在东南亚地区,青蒿素抗性镰刀形疟原虫的出现对全球疟疾传播的控制造成了巨大的威胁。早些时候,法国巴斯德研究所的科研人员在《自然》杂志报道了对疟原虫的测序研究,发现疟原虫基因突变与K13标记物有关。通过在分子层面上分析DNA成为了监控疟疾疫情的一种新方法。从2013年1月到2014年12月,研究人员在缅甸十个行政区



青蒿素是从植物黄花蒿茎叶中提取的有过氧基团的倍半萜内酯药物,对治疗疟疾具有很好的效果。但在东南亚地区,青蒿素抗性镰刀形疟原虫的出现对全球疟疾传播的控制造成了巨大的威胁。早些时候,法国巴斯德研究所的科研人员在《自然》杂志报道了对疟原虫的测序研究,发现疟原虫基因突变与K13标记物有关。通过在分子层面上分析DNA成为了监控疟疾疫情的一种新方法。从2013年1月到2014年12月,研究人员在缅甸十个行政区的55个地点进行了一次代表性研究。此次研究是通过确定携带K13突变镰刀形疟原虫的相关流行性从而评估缅甸地区的青蒿素抗性镰刀形疟原虫的传播。

镰刀形疟原虫的K13序列主要由被动的案例检测获得。研究人员将数据输入到两个地理数据模型,从而对缅甸各地的K13突变疟原虫疫情进行估测。在全部940例病人中,371例(39%)携带K13突变。共发现26种不同的突变,包括9种在东南亚地区为此报导过的突变。缅甸十个行政区中有七个地区的组合式K13突变超过20%。地图表明在缅甸东、北部大部分地区K13总发生率超过10%。在靠近印度的边境区域,45例感染中有21例(47%)携带有K13突变。

氯喹抗药性的全球扩展曾导致非洲数以百万计百姓的丧生。现在,缅甸正是抗疟的主战场。青蒿素抗药性尚未被遏制。现有的用于治疗疟疾的组合开始失效。本次研究表明,青蒿素抗药性正在缅甸国内逐渐扩展。合适的治疗方案应当被及时检测并全面实施。

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    2015-11-26 howi
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    2015-09-16 yige2012
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    2015-02-28 xiaoai5777

    不错的文章,学习了

    0

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