用可互换子进行毛细血管电泳,用于多功能和自动化分析干血斑样本
Miloš Dvořák1, Ondrej Moravčík1,2, Pavel Kubáň1
1Institute of Analytical Chemistry of the Czech Academy of Sciences, Veveří 97, CZ-60200 Brno, Czech Republic.
Analytical chemistry
|July 28, 2023
概括
一种新的自动毛细管电泳 (CE) 方法提供了对干血斑 (DBS) 样本的多功能分析. 这种方法最大限度地减少了处理时间,提高了药物和氨基酸检测的效率.
科学领域:
- 分析化学 分析化学
- 生物医学工程 生物医学工程
背景情况:
- 干血点 (DBS) 采样为各种分析提供了静脉穿刺的微创替代方案.
- 毛细电泳 (CE) 是一种强大的分离技术,但其应用于DBS分析需要高效的样本准备和优化的分析条件.
研究的目的:
- 开发和验证一种多功能,自动化的毛细血管电泳 (CE) 方法,用于分析干血斑样 (DBS) 样本.
- 优化液体处理和CE参数,以快速有效地分析来自DBS的非类固醇抗炎药物 (NSAID) 和氨基酸 (AAs).
主要方法:
- 使用了两种可互换的CE弹,具有不同的毛细血管尺寸,用于化和分析.
- 研究了影响液体处理的关键变量,包括毛细血管的长度,内部直径和温度.
- 优化了36个DBS样品 (每样5μL) 的自动化在瓶内化,用于直接的CE分析.
主要成果:
- 通过宽孔毛细管用于化,实现了最小的DBS处理时间 (每样本1-2分钟).
- 证明了高分析效率,用于CE分离的窄孔毛细血管.
- 获得了高精度 (液体转移<0.9%,CE分析≤5.1%的NSAIDs,≤12.3%的AA) 和线性 (R2 ≥0.996).
- 获得的样本吞吐量超过每小时6个DBS,具有敏感的检测极限.
结论:
- 新型自动化CE系统为DBS分析提供了一个高度多功能和高效的平台.
- 双子方法允许在仪器设置和检测原则 (光学和导电性) 中提供灵活性.
- 该方法适用于临床环境中的治疗药物监测和内源代谢物分析.
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