Determination of Aminophylline in Human Serum Using Hydrogel Microspheres for Coupled Surface-Enhanced Raman Spectroscopy (SERS) and Solid-Phase Extraction.

Autor: Wang Y; Guangxi Key Laboratory of Green Processing of Sugar Resources, Faculty of Medicine/College of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou City, Guangxi, China., Kong H; Guangxi Key Laboratory of Green Processing of Sugar Resources, Faculty of Medicine/College of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou City, Guangxi, China., Chen R; Guangxi Key Laboratory of Green Processing of Sugar Resources, Faculty of Medicine/College of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou City, Guangxi, China., Xu Z; Guangxi Key Laboratory of Green Processing of Sugar Resources, Faculty of Medicine/College of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou City, Guangxi, China., Zhou P; Guangxi Key Laboratory of Green Processing of Sugar Resources, Faculty of Medicine/College of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou City, Guangxi, China., Zhan Y; Guangxi Key Laboratory of Green Processing of Sugar Resources, Faculty of Medicine/College of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou City, Guangxi, China., Huang W; Guangxi Key Laboratory of Green Processing of Sugar Resources, Faculty of Medicine/College of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou City, Guangxi, China.; Province and Ministry Co-Sponsored Collaborative Innovation Center of Sugarcane and Sugar Industry, Nanning, Guangxi, China., Cheng H; Guangxi Key Laboratory of Green Processing of Sugar Resources, Faculty of Medicine/College of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou City, Guangxi, China.; Province and Ministry Co-Sponsored Collaborative Innovation Center of Sugarcane and Sugar Industry, Nanning, Guangxi, China., Li L; Guangxi Key Laboratory of Green Processing of Sugar Resources, Faculty of Medicine/College of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou City, Guangxi, China.; Province and Ministry Co-Sponsored Collaborative Innovation Center of Sugarcane and Sugar Industry, Nanning, Guangxi, China., Feng J; Guangxi Key Laboratory of Green Processing of Sugar Resources, Faculty of Medicine/College of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou City, Guangxi, China.
Jazyk: angličtina
Zdroj: Applied spectroscopy [Appl Spectrosc] 2024 May; Vol. 78 (5), pp. 551-560. Date of Electronic Publication: 2024 Feb 22.
DOI: 10.1177/00037028241233016
Abstrakt: Aminophylline (AMP) is a bronchodilator. The therapeutic and toxic doses are very close. Therefore, therapeutic drug monitoring (TDM) of AMP is essential in clinical practice. Microgels were synthesized by free radical precipitation polymerization. Silver@poly( N -isopropyl acrylamide) (Ag@PNIPAM) hybrid microgels were obtained by loading silver (Ag) nanoparticles into the three-dimensional network of the microgels by in situ reduction. The microgel is a three-dimensional reticular structure with tunable pore size, large specific surface area, and good biocompatibility, which can be used as a sorbent for solid-phase extraction (SPE) of target molecules in complex matrices and as a surface-enhanced Raman spectroscopy (SERS) substrate. We optimized the conditions affecting SERS enhancement, such as silver nitrate (AgNO 3 ) concentration and SPE time, according to the SERS strategy of Ag@PNIPAM hybrid microgels to achieve label-free TDM for trace AMP in human serum. The results showed good linearity between the logarithmic concentration of AMP and its SERS intensity in the range of 1-1.1 × 10 2  µg/mL, with a correlation coefficient ( R 2 ) of 0.9947 and a low detection limit of 0.61 µg/mL. The assay accuracy was demonstrated by spiking experiments, with recoveries ranging from 93.0 to 101.8%. The method is rapid, sensitive, reproducible, requires simple sample pretreatment, and has good potential for use in clinical treatment drug monitoring.
Competing Interests: Declaration of Conflicting InterestsThe authors declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.
Databáze: MEDLINE