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Ceftriaxone sodium, a widely used third-generation cephalosporin antibiotic, poses significant health risks when residues accumulate in clinical or environmental settings. However, conventional detection techniques, including high-performance liquid chromatography and capillary electrophoresis, are limited by complex procedures, poor sensitivity, and a lack of real-time capability. To address these challenges, we report a sensitivity-enhanced electrochemiluminescence (ECL) microfluidic device for the rapid and label-free detection of ultra-low concentrations of ceftriaxone. Au(Capt) gold nanoclusters were served as a novel ECL luminophore to boost detection sensitivity, while a 3D-printed circulating microfluidic channel was designed to enrich ceftriaxone via inertial centrifugation. The device achieved a wide detection range of 4-400 μg/mL, a low detection limit of 0.522 μg/mL, and an average recovery of 99.1 % in real sample tests. This integrated platform offers a promising strategy for simple, sensitive, and on-site monitoring of ceftriaxone contamination.
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http://dx.doi.org/10.1016/j.bios.2025.117657 | DOI Listing |
Proc Natl Acad Sci U S A
September 2025
Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN 46202.
Retinal ganglion cells (RGCs) are highly compartmentalized neurons whose long axons serve as the sole connection between the eye and the brain. In both injury and disease, RGC degeneration occurs in a similarly compartmentalized manner, with distinct molecular and cellular responses in the axonal and somatodendritic regions. The goal of this study was to establish a microfluidic-based platform to investigate RGC compartmentalization in both health and disease states.
View Article and Find Full Text PDFLab Chip
September 2025
Institute of Integrated Research, Institute of Science Tokyo, R2-9, 4259 Nagatsuta-cho, Midoriku, Yokohama, Kanagawa 226-8501, Japan.
Tunability in isolating target cells of varying sizes from complex heterogeneous samples is essential for biomedical research and diagnostics. However, conventional deterministic lateral displacement (DLD) systems lack flexibility due to their fixed critical diameters (). Here, we present a thermo-responsive DLD micropillar array that enables tunable cell separation by dynamically modulating through temperature control.
View Article and Find Full Text PDFFood Res Int
November 2025
Medical School of Nantong University, Nantong 226001, China. Electronic address:
Food nutrition and safety are fundamental to the food industry, and the development of appropriate research models is crucial. Unlike traditional animal models, the innovative organoid/organ-on-a-chip model possess distinct human-like characteristics and genomic stability, which have garnered significant attention in food research. In this review, we conduct a comparative analysis between organoids and traditional animal and 2D cell models.
View Article and Find Full Text PDFFood Res Int
November 2025
Key Laboratory of Environmental Related Diseases and One Health, Xianning Medical College, Hubei University of Science and Technology, Xianning 437100, China. Electronic address:
This study aimed to investigate the protective mechanism of Osmanthus fragrans water extract (OSF) against liver injury induced by dibutyl phthalate (DBP). We utilized liver organoids and liver organ chip technology to replicate the liver microenvironment in vivo. Metabolomic analysis revealed that DBP induced oxidative stress and lipid metabolism disorders; however, following intervention with OSF, the associated abnormal metabolites were significantly reduced.
View Article and Find Full Text PDFNat Commun
September 2025
Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Institute of Science Tokyo, Nagatsuta-cho, Midori-ku, Yokohama, Japan.
The research and implementation of portable and low-cost analytical devices that possess high reproducibility and ease of operation is still a challenging task, and a growing field of importance, within the analytical research. Herein, we report the concept, design and optimization of a microfluidic device based on electrochemiluminescence (ECL) detection that can be potentially operated without electricity for analytical purposes. The device functions exploiting the concept of streaming potential-driven bipolar electrochemistry, where a potential difference, generated from the flow of an electrolyte through a microchannel under the influence of a pressure gradient, is the driving force for redox reactions.
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