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相关概念视频

Enzyme-Linked Immunosorbent Assay01:33

Enzyme-Linked Immunosorbent Assay

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In 1971, Peter Perlman and Eva Engvall developed an Enzyme-linked immunosorbent assay (ELISA or EIA). ELISA differs from western blot in that the assays are conducted in microtiter plates or in vivo rather than on an absorbent membrane.
There are many different types of ELISAs, but they all involve an antibody molecule whose constant region binds an enzyme, leaving the variable region free to bind its specific antigen.  Enzyme-substrate reaction allows the antigen to be visualized or...
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相关实验视频

Updated: Jul 18, 2025

A Rapid, Multiplex Dual Reporter IgG and IgM SARS-CoV-2 Neutralization Assay for a Multiplexed Bead-Based Flow Analysis System
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毛细血管流动驱动免疫测试平台用于COVID-19抗原诊断.

Jeremy S Link1, Cody S Carrell1, Ilhoon Jang2

  • 1Department of Chemistry, Colorado State University, USA.

Analytica chimica acta
|August 21, 2023
PubMed
概括

一种新的毛细管驱动免疫检测 (CaDI) 装置提供了快速,负担得起的SARS-CoV-2诊断. 这种简单的视觉测试提供了与实验室方法相似的结果,增强了临床检测能力.

关键词:
在 COVID-19 疫情中,毛细管驱动的微流体学诊断测试 诊断测试 诊断测试 诊断测试 诊断测试免疫测试是一种免疫测试.护理中心的关心点这就是SARS-CoV-2病毒.

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科学领域:

  • 生物医学工程 生物医学工程
  • 诊断技术 诊断技术 诊断技术
  • 微流体学 微流体学

背景情况:

  • 随着COVID-19的流行,人们越来越需要快速,负担得起的诊断测试.
  • 像PCR和ELISA这样的传统方法是敏感的,但成本高且耗时.
  • 与实验室方法相比,现有的护理点侧流量测试 (LFA) 往往缺乏灵敏度.

研究的目的:

  • 开发和验证一种新的毛细管驱动免疫检测 (CaDI) 装置.
  • 用微流体和毛细血管作用来实现ELISA步骤的自动化,以进行视觉读取.
  • 为了实现快速,灵敏和负担得起的SARS-CoV-2抗原检测.

主要方法:

  • 该CaDI装置利用微流体通道和毛细血管作用来被动自动化ELISA步骤.
  • 采用色度检测,对试剂,洗剂和基板进行顺序递送到酸纤维素条.
  • 使用裸眼视觉评估和基于智能手机的图像分析 (ImageJ) 验证了SARS-CoV-2抗原检测.

主要成果:

  • 该CaDI设备在15-20分钟内可视检测到SARS-CoV-2抗原.
  • 分析检测极限在缓冲剂中为83 PFU/mL,在尖鼻中为222 PFU/mL.
  • 视觉检测极限被确定为100 PFU/mL在未经训练的用户的人工鼻中.

结论:

  • 该CaDI设备提供了一种简单,快速和可视化解释的SARS-CoV-2抗原检测方法.
  • 它的性能与传统的井板ELISA方法相提并论.
  • 该CaDI平台可适应SARS-CoV-2检测之外的各种免疫测试应用.