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相关概念视频

Malaria01:29

Malaria

Malaria pathogenesis in humans reflects a delicate interplay between parasite biology and host response. Clinical illness reflects a host’s immune response to the parasite’s asexual replication cycle, which is often asymptomatic in individuals with partial immunity. From the parasite's perspective, transmission between mosquito and human with minimal host pathology is evolutionarily advantageous. Among the six Plasmodium species infecting humans, P. falciparum and P. vivax dominate in global...

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相关实验视频

Updated: Jun 19, 2026

Detection and Monitoring of Tumor Associated Circulating DNA in Patient Biofluids
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针对特定疟疾的基于aptamer的诊断

Mohd Shoeb Alam1, Abhijeet Dhiman1, Tanu Bhardwaj2

  • 1Department of Biotechnology, All India Institute of Medical Sciences, New Delhi 110029, India.

ACS infectious diseases
|March 5, 2025
PubMed
概括

新的DNA体提供了一个高度特定和准确的诊断工具,用于Plasmodium vivax疟疾. 这一突破有望为检测疟疾感染提供更容易获得和更可靠的方法,特别是在疾病负担较高的地区.

关键词:
这是一种活性菌 (Plasmodium vivax).这就是PvTRAgg.一个aptamer的应用程序.诊断 诊断 诊断 诊断 诊断 诊断疟疾 疟疾 是一种疾病.

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科学领域:

  • 寄生虫学的寄生虫学
  • 分子诊断学 分子诊断学
  • 生物技术是生物技术.

背景情况:

  • 疟疾仍然是一个重大的全球健康负担,特别是印度的Plasmodium vivax疟疾.
  • 目前用于P.vivax疟疾的诊断方法往往受到高成本,复杂性或精度低的困扰.
  • 对于P.vivax疟疾的特定和可靠的诊断试验有着迫切的需要.

研究的目的:

  • 开发具有高特异性的新型DNA吸附体,用于Plasmodium vivax富抗原 (PvTRAg).
  • 为了评估这些体的诊断潜力,使用体连接的固定吸附剂试验 (ALISA).
  • 为了建立一个新的aptamer-based诊断测试的基础,用于P. vivax疟疾.

主要方法:

  • 通过指数式丰富对联体的系统进化 (SELEX) 用于识别针对PvTRAg.的特定体.
  • 选择了Apt_14和Apt_16两种高亲和度的阿胺,分别具有1.9nM和1.2nM的解离常数 (KD).
  • 在临床验证中,APTAMER在ALISA格式中用于检测P.vivax疟疾感染.

主要成果:

  • Apt_14和Apt_16对PvTRAg具有很高的亲和力,检测极限在2.5nM.
  • 临床验证显示高特异性 (100%) 和良好的敏感性 (Apt_14的96%和Apt_16的84%).
  • 体表现出最小的与其他抗原的交叉反应性,证实了它们对PvTRAg.g的选择性.

结论:

  • DNA 体是用于准确诊断Plasmodium vivax疟疾的有效工具.
  • 开发的体和ALISA方法对一种新的,特定的诊断试验有很大的希望.
  • 这项研究为改善疟疾诊断铺平了道路,特别是对于P. vivax感染.