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Amperometry: Overview

Amperometry: Overview

Amperometry is a technique commonly used to measure the concentration of specific analytes in a solution by monitoring the electric current generated during an electrochemical reaction. It involves applying a constant potential between a working electrode and a reference electrode to measure the resulting current, which is proportional to the concentration of the analyte. The Clark oxygen electrode operates based on this principle of amperometry. It consists of a cathode and an anode enclosed...

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Updated: May 29, 2025

Highly Sensitive and Rapid Fluorescence Detection with a Portable FRET Analyzer

Highly Sensitive and Rapid Fluorescence Detection with a Portable FRET Analyzer

Published on: October 1, 2016

基于FRET的APTA传感器/Cy3复合体用于葡萄糖的测定.

Ghasem Rezanejade Bardajee¹, Afsaneh Rahimi Chahrogh², Mojdeh Atashkadi²

¹Department of Polymer and Materials Chemistry, Faculty of Chemistry and Petroleum Sciences, Shahid Beheshti University, Tehran, Iran.

Luminescence : the journal of biological and chemical luminescence

|February 7, 2025

概括

一个新的Förster共振能量转移 (FRET) 光探测器使用aptamers和量子点提供灵敏的,具有成本效益的血糖监测. 这种生物传感器在生物样本中显示出高的选择性和准确性.

关键词:

CdTe QDs 的使用情况 Cy3 Cy3 Cy3 Cy3 Cy3 Cy3 Cy3 Cy3 Cy3 Cy3 Cy3 Cy3 Cy3 Cy3 Cy3 Cy3 Cy3 Cy3 Cy3 Cy3 Cy3 Cy3 Cy3 在FRET机制下,一个aptamer的应用程序.光检测试验法光检测葡萄糖检测检测葡萄糖的检测

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Last Updated: May 29, 2025

Highly Sensitive and Rapid Fluorescence Detection with a Portable FRET Analyzer

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Published on: October 1, 2016

FIBS-enabled Noninvasive Metabolic Profiling

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科学领域:

生物医学工程生物医学工程
分析化学分析化学
纳米技术纳米技术

背景情况:

精确的血糖监测对于糖尿病管理至关重要.
现有的方法可能缺乏敏感性,成本效益或特异性.
福斯特共振能量转移 (FRET) 提供了一个敏感的检测机制.

研究的目的:

开发一种灵敏且具有成本效益的光探针,用于血糖监测.
使用基于FRET的系统,结合aptamer和量子点.
为了评估探测器在生物样本中的性能.

主要方法:

开发了一种FRET传感器,使用甲-甲酸量子点 (CdTe-TGA QDs) 和一个Cy3标记的aptamer.
通过葡萄糖分子对光灭的研究.
使用UV-Vis,FT-IR,XPS,FESEM,EDX,TEM,AFM和DLS进行表征.

主要成果:

探测器实现了低检测极限7.72×10−9M的葡萄糖.
证明了对葡萄糖的优良选择性和特异性.
在人体血清和尿液中显示出高恢复率 (96.00-101.11%).

结论:

开发的基于FRET的APTA传感器/Cy3复合体是检测葡萄糖的灵敏可靠工具.
这种探针有可能用于临床诊断和生物代谢物查.
这项研究突出了量子点-阿普塔默结合体在生物传感应用中的实用性.