开发和优化生物传感器,以确定阿斯巴酸氨基转移酶在血液中的水平
Daryna Mruga1, Sergei Dzyadevych2,3, Oleksandr Soldatkin2,4
1Institute of Molecular Biology and Genetics of the National Academy of Sciences of Ukraine, Zabolotnogo Street 150, Kyiv, 03680, Ukraine. darynamruga@gmail.com.
Analytical and bioanalytical chemistry
|December 12, 2024
概括
为测量阿斯巴酸氨转移酶 (AST) 活性而开发了一种新型的电压测量生物传感器,这是肝脏和心脏病诊断的关键生物标志物. 这种准确且价格实惠的生物传感器对早期疾病检测和护理点测试充满希望.
科学领域:
- 生物医学工程 生物医学工程
- 生物传感器技术技术
- 临床诊断 临床诊断 临床诊断
背景情况:
- 酸氨基转移酶 (AST) 是诊断肝脏和心血管疾病的关键生物标志物.
- 准确和快速的AST活动测量对于及时诊断和管理疾病至关重要.
- 现有的AST测定方法可能耗时或需要专门的实验室设备.
研究的目的:
- 开发和优化一个强度计生物传感器,用于定量确定人类血清中AST活性.
- 评估生物传感器的性能特征,包括选择性,稳定性,灵敏性和动态范围.
- 为了比较生物传感器的性能与在血清样本中测量AST的既定方法.
主要方法:
- 开发了一种使用酸盐氧化酶固定在白金盘电极上的安倍度生物传感器.
- 优化生物选择性膜组成,形成协议和工作溶液参数.
- 使用标准溶液和人类血清样本评估传感器性能.
- 使用标准加法和参考光谱光度计技术进行比较分析.
主要成果:
- 优化的生物传感器表现出高选择性,稳定性 (在-18°C下2个月内70%的保留率) 和灵敏度 (2.37 nA min-1每10 U L-1).
- 生物传感器显示了广泛的动态范围 (0-500 U L-1) 和低检测极限 (1 U L-1).
- 在生物传感器结果和参考光谱法之间观察到强烈的相关性 (r=0.989),校准曲线法优于标准加法.
结论:
- 开发的安培度生物传感器为AST活动确定提供了快速,实惠和准确的方法.
- 生物传感器的性能特性使其适用于早期检测肝脏和心脏疾病.
- 生物传感器的灵活性和易用性支持其在临床检测和个性化医疗应用方面的潜力.
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