Simultaneous Detection of Citric Acid and Oxalic Acid Based on Dual Spectrum and Biomimetic Peroxidase for Urolithiasis Screening with a Fully Automatic Urine Analyzer

Author:

Sun Xianyou1ORCID,Zhou Shuqi1,Zhang Yanchi1,Ma Chiyu1,Hu Yanjie2,Tian Shichao1,Wang Xinyi1,Kong Liubing1,Huang Zhuoru1,Liang Tao3,Wan Hao145,Wang Ping145ORCID

Affiliation:

1. Biosensor National Special Laboratory Key Laboratory of Biomedical Engineering of Ministry of Education Department of Biomedical Engineering Zhejiang University Hangzhou 310027 China

2. Department of Respiratory Medicine Sir Run Run Shaw Hospital Medical School of Zhejiang University Hangzhou China

3. Research Center for Quantum Sensing Zhejiang Lab Hangzhou 310000 China

4. State Key Laboratory of Transducer Technology Chinese Academy of Sciences Shanghai 200050 China

5. Binjiang Institute of Zhejiang University Hangzhou 310053 China

Abstract

AbstractUrolithiasis stands as a prevalent ailment within the urinary system, with hyperoxaluria and hypocitraturia being the most frequent manifestations characterized by excessive oxalic acid (OA) and deficient citric acid (CA) levels in urine. Detecting these compounds in urine quantitatively holds paramount importance for early urolithiasis screening. Existing methodologies fall short in achieving simultaneous and on‐site identification of OA and CA, posing challenges for accurate urolithiasis screening. Addressing this concern, the study successfully accomplishes the concurrent identification of OA and CA in urine through a combination of dual‐spectral analysis and biomimetic peroxidase utilization. Bovine serum albumin and dithiothreitol‐modified copper nanoclusters (BSA‐DTT‐CuNCs) are employed as biomimetic peroxidases, effectively mitigating interference and enabling the simultaneous determination of OA and CA. The quantification range spans from 0 to 12 mm for OA and 0.5 to 2.5 mm for CA, with detection limits of 0.18 and 0.11 mm, respectively. To facilitate swift and on‐location urine analysis, a fully automated urine analyzer (FAUA) is introduced that streamlines the process of biomarker pretreatment and identification within urine samples. Validation with real urine samples from urolithiasis patients demonstrates the method's diagnostic precision, highlighting the dual‐spectral technique and analyzer's promising role in urolithiasis screening.

Funder

National Key Research and Development Program of China

National Natural Science Foundation of China

Publisher

Wiley

Subject

Biomaterials,Biotechnology,General Materials Science,General Chemistry

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