Cell:宿主脂类水平可调节人类疟原虫的性别分化

2017-12-18 药明康德 学术经纬

疟疾仍然是全球性的公共卫生威胁之一,根据世界卫生组织调查,在2015年有接近2亿临床案例并且有超过40万人因此死亡。

疟疾仍然是全球性的公共卫生威胁之一,根据世界卫生组织调查,在2015年有接近2亿临床案例并且有超过40万人因此死亡。导致疟疾的疟原虫(Plasmodium falciparum ) 只有在完成性别分化成为成熟的配子体 (gametocytes) 时才能感染蚊子并且借助蚊子作为载体传播到其它动物中去。因此研究疟原虫配子体产生的过程对防止疟疾的扩散至关重要。哈佛大学医学院 (Harvard Medical School) 和英国格拉斯哥大学 (University of Glasgow)的研究人员对激发疟原虫性别分化的因素进行了研究。他们发现人体血清中的一种称为溶血磷脂酰胆碱 (lysophosphatidylcholine, LysoPC) 的脂类能够抑制疟原虫性别分化的启动。LysoPC 是疟原虫磷脂代谢的重要成份。宿主中LysoPC水平的下降会引发疟原虫的补偿反应,这会激活与性别分化期相关的转录过程并且促进配子体的产生。这项研究表明,疟原虫可以感知宿主释放的生理信号并且依据这些信号调节自身的分化过程。这些数据可能为阻断疟疾传播提供新方法。

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    2018-06-09 维他命
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    2017-12-20 wincls
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    2017-12-19 stupidox

    学习了,谢谢。

    0

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    2017-12-19 1dd8c52fm63(暂无匿称)

    学习学习.了解了解

    0

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Lancet Infect Dis:“超级疟疾”在东南亚蔓延

越南、泰国和英国研究人员在新一期英国《柳叶刀—传染病》杂志上刊文说,令主流疗法失效的“超级疟疾”正在东南亚传播,柬埔寨、泰国、缅甸、老挝和越南都已经出现疫情。研究人员警告,如不能得到有效控制,“超级疟疾”可能会进一步扩散传播。

Nature:控制疟疾的灭蚊大计要考虑蚊子的遗传多样性

本周《自然》在线发表的一项研究Genetic diversity of the African malaria vector Anopheles gambiae介绍了它们的遗传多样性。在分子水平上增进对这些物种的遗传学理解,对于最大程度延长杀虫剂的效用期限、加快制定新的传病媒介控制策略至关重要。

西双版纳实现消除疟疾目标

11月14日,云南省卫生计生委在官方网站上发布消息称,经专家考核评估,西双版纳州已达到省级消除疟疾考核评估标准,该州作为云南省疟疾重灾区提前实现消除疟疾目标。

Lancet glob health:妊娠期患疟疾与死产的定量关联。

全球每年有260万例死产。而妊娠时患疟疾与死产的关联尚未完全量化。现Kerryn A Moore等人致力于量化这一关联,并评估疟疾的地方性对这一关联的影响。

Lancet Infect Dis:抗疟新药来了 堪比一线治疗

根据发表在《The Lancet Infectious Diseases》最新的来自FDA(美国食品和药物管理局)监督临床试验的结果显示,杜兰大学的研究人员已经开发了一种能够对抗疟疾非重症病例的新药。

Science:肠道共生菌阻断蚊子传播疟疾新策略

王四宝等发现能在按蚊中进行持续跨代传播的新共生细菌,能高效驱动抗疟效应分子快速散播到整个蚊群中,使按蚊成为无效的疟疾媒介,实现从源头上阻断疟疾传播。