氧化应激改变了Plasmodium falciparum中素的有效性
Camilla Valente Pires1, Debora Cassandra1, Shulin Xu1
1Center for Global Health and Interdisciplinary Diseases Research and USF Genomics Program, College of Public Health, University of South Florida, Tampa, Florida, USA.
mBio
|February 7, 2024
概括
暴露于氧化应激的疟疾寄生虫对artemisinin变得不那么敏感. 然而,热冲击降低了 lumefantrine 的有效性,这表明压力状况会影响患者的抗疟疾药物的有效性.
科学领域:
- 寄生虫学的寄生虫学
- 药物耐药性 药物耐药性 药物耐药性
- 分子生物学分子生物学
背景情况:
- 在Plasmodium falciparum中新出现的甲素耐药性是一个主要的全球健康问题.
- 寄生虫耐药性与对氧化损伤和代谢变化的耐受性有关.
- 之前的研究表明,在甲美西宁诱导的氧化应激反应和在发烧和氧化应激下寄生虫生存机制之间存在重叠.
研究的目的:
- 调查氧化应激和热冲击是否会改变Plasmodium falciparum对素的反应.
- 评估这些压力状况对美西宁和卢梅芬林疗效的影响.
主要方法:
- 使用了Plasmodium falciparum的体外模型.
- 寄生虫暴露在红细胞内氧化应激和热冲击条件下.
- 在这些压力条件下评估了阿尔特米西宁和卢梅芬林的抗疟疾疗效.
主要成果:
- 亚特美西宁的抗疟疾疗效在肠红细胞内氧化应激下寄生虫中显著降低.
- 热冲击并没有降低明素的有效性,但显著降低了明素的有效性.
- 这些发现表明,压力状况可以改变药物的疗效.
结论:
- 长时间的红细胞内氧化压力可能会使疟疾寄生虫易受素耐受.
- 热冲击可以降低明的疗效,明是明联合治疗中的合作药物.
- 在理想条件下的体外疗效测试可能无法预测疟疾患者的现实药物疗效.
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