Article
Chemistry, Analytical
Mona Soroush, Walid Ait Mammar, Axel Wilson, Hedayatollah Ghourchian, Michele Salmain, Souhir Boujday
Summary: We developed a magneto-plasmonic biosensor for immunodetection of antigens in small sample volumes. The biosensor utilized gold nanoparticles and magnetic beads conjugated with antibodies as capture and detection probes, respectively. The sandwich immunocomplex formed by the target analyte and detection probe was separated using a magnetic field, and the signal was measured by UV-Visible spectroscopy. The assay was successfully applied in a microfluidic system for quantification of the analyte.
Article
Electrochemistry
Yuzhen Huang, Yingkuan Han, Yakun Gao, Jianwei Gao, Hao Ji, Qihang He, Jianbo Tu, Guanqiu Xu, Yu Zhang, Lin Han
Summary: A microfluidic electrochemical sensing chip array was developed for ultrasensitive Pb2+ detection, showing promising potential in clinical diagnosis and environmental monitoring. The chip design integrated novel features with nanomaterials catalytic strategy, providing a new paradigm for in-situ analysis in various analytical fields.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Analytical
Rongke Gao, Feng Chen, Dongdong Yang, Lihua Zheng, Tongmei Jing, Huakun Jia, Xiaozhe Chen, Yang Lu, Shenghao Xu, Dongzhi Zhang, Liandong Yu
Summary: We developed a new pump-free hybrid microfluidic chip for simultaneous detection of creatine kinase MB isoenzyme and cardiac troponin cardiac markers. The integration of paper and PDMS microfluidic chip offers portability, low-cost, and high sensitivity.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Analytical
Hayati Filik, Asiye Aslihan Avan, Nilay Altas Puntar, Mustafa Ozyurek, Zeynep Banu Gungor, Mine Kucur, Handan Kamis, Diclehan Ali Dicle
Summary: A sensitive sandwich-model immunoassay was designed for simultaneous electrochemical measurement of alphafetoprotein and carcinoembryonic antigen using multiple-label strategy. The immunoassay showed good linear relationship and low detection limits for both analytes. The sandwich-type immunosensor was successfully applied to real serum sample analysis.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Biophysics
Xuejiao Liu, Yuanliang Li, Li He, Yongjun Feng, Huangying Tan, Xu Chen, Wensheng Yang
Summary: An ultrasensitive and antifouling label-free electrochemical immunosensor was developed for simultaneous analysis of NETs biomarkers CgA and CgB. The sensor platform exhibited excellent antifouling ability and could efficiently work in complex biological systems. It accurately detected CgA and CgB levels in clinical serum.
BIOSENSORS & BIOELECTRONICS
(2021)
Article
Chemistry, Analytical
Jianbo Liu, Jing Liu, Yonghui Shang, Jinqiong Xu, Xinyang Wang, Jianbin Zheng
Summary: A multiplex electrochemical immunosensor was developed for the simultaneous detection of two lung cancer markers, CEA and CA125, with high sensitivity and accuracy.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Analytical
Na Wang, Jing Wang, Xiaoqing Zhao, Hou Chen, Hui Xu, Liangjiu Bai, Wenxiang Wang, Huawei Yang, Donglei Wei, Baiqing Yuan
Summary: A novel sandwich-type electrochemical immuno sensor has been developed for simultaneous determination of three tumor markers utilizing graphene oxide and PSMA. The sensor demonstrated a linear response and high sensitivity for the detection of prostate specific antigen, human α-fetoprotein, and carbohydrate antigen 125, offering a simple and sensitive method for early cancer identification.
Article
Chemistry, Analytical
Hoda Taheri, Gholamreza Khayatian
Summary: The simultaneous determination of arginine and valine amino acids in plasma using flower-shaped MuPADs and PMMA/paper hybrid microfluidic chip based on AuNPs has been reported. The method offers advantages such as low cost, reasonable sensitivity, simple and fast performance, simultaneous detection, disposable use, and high sample throughput.
Article
Chemistry, Analytical
Lihua Li, Yan Wei, Shengpeng Zhang, Xishan Chen, Taili Shao, Dexiang Feng
Summary: A multiple immunosensor was developed for simultaneous detection of PSA, CEA, and AFP with wider measurement linear ranges and low detection limits. The immunosensor exhibited good performance in human serum samples, indicating its potential application in early clinical diagnosis of tumor markers.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Gokul Chandra Biswas, Hiroaki Suzuki
Summary: We have introduced a simple-to-use manual roller pump-driven and valve-free microfluidic system for sequential solution exchange and protein detection. The system is characterized by its simplicity, quick operation, and suitability for emergencies and situations with limited resources.
Article
Chemistry, Multidisciplinary
Binfeng Yin, Changcheng Qian, Songbai Wang, Xinhua Wan, Teng Zhou
Summary: A novel microfluidic chip-based magnetic relaxation switching (MRS) immunosensor using enzyme-mediated nanoparticles was developed to simplify operation and amplify signals, achieving a satisfactory limit of detection for alpha-fetoprotein (AFP) in real samples, outperforming conventional ELISA.
FRONTIERS IN CHEMISTRY
(2021)
Article
Chemistry, Analytical
John A. Tetteh, Elizabeth A. Hayter, R. Scott Martin, Istvan Z. Kiss
Summary: In this study, we investigated the kinetic features of complex charge transfer chemical reactions using a microelectrode integrated in a flow cell made with 3D printing technology. Through experimentation and numerical simulation, we discovered new phenomena and conditions, and compared them with traditional approaches.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Analytical
Emiliano Felici, Matias D. Regiart, Sirley V. Pereira, Francisco G. Ortega, Lucio Angnes, German A. Messina, Martin A. Fernandez-Baldo
Summary: In this study, a portable and reusable microfluidic device for prostate-specific antigens (PSA) quantification was developed. The device combined a polymethyl methacrylate microfluidic platform with electrochemical detection. By modifying the platinum working microelectrode with carbon nanofibers (CNF)-decorated gold nanoporous (GNP) structures, the device exhibited enhanced properties such as increased antibody immobilization capacity and electroactive area. The device showed a detection limit of 5 pg mL(-1) and a linear range from 0.01 to 50 ng mL(-1). Clinical testing in serum from 30 prostate cancer patients demonstrated the device's sensitivity, selectivity, and portability for diagnosis and monitoring.
Article
Chemistry, Analytical
Gozde Kabay, Yaoqi Yin, Chandra K. Singh, Nihal Ahmad, Sundaram Gunasekaran, Mehmet Mutlu
Summary: Prostate cancer is the second most common cancer among men worldwide, and early and accurate diagnosis is crucial. To address this need, researchers have developed an electrochemical immunosensor for sensitive detection of the prostate-specific membrane antigen (PSMA). The sensor shows high analytical performance and can be used for detection in body fluids.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Analytical
Wenpeng Li, Jiawen Xiang, Jinglong Han, Mingsan Man, Lingxin Chen, Bowei Li
Summary: In this study, a rotary microfluidic electrochemical paper-based chip (MIP-ePADs) based on surface biomolecular imprinting technology was proposed for the sensitive and selective detection of IL-6 and PCT. The chip showed stable and accurate analysis and detection capabilities, with low cost. This method is important for the improvement of rapid detection technology, particularly for the analysis of non-antibody inflammation markers.