Abstract
This study proposes and demonstrates a novel electrochemical sensor for accurate quantification of renin levels in human samples. The carbon-based device modified with polyarginine-coated gold nanostars, exhibited enhanced stability and dispersion. Characterization techniques confirmed minimal alterations in the nanostructure morphology. Differential pulse voltammetry measurements on undiluted plasma samples demonstrated a highly linear current peak for renin levels with a low limit of detection. Bland–Altman analysis showed strong agreement with the gold standard enzyme-linked immunosorbent assay. The gold nanostars double layer improved sensor selectivity and sensitivity, offering a fast and cost-effective method for renin quantification under tissue perfusion conditions.
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Acknowledgments
This work received partial support from the National Research Foundation (NRF) of Korea through the National R&D Program, funded by the Ministry of Science and ICT (2021M3H4A4079521), as well as from the Korean government (No. NRF-2018R1D1A1B05049787). Additionally, support was provided by the BK21 FOUR Project.
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AS: Conceptualization, Methodology, Investigation, Software, Formal analysis, Visualization, Writing—Original Draft, and Writing—Review & Editing. HEK: Visualization, Material and Equipment Resources, Writing—Review & Editing. MK: Material and Equipment Resources, Supervision, and Writing—Review & Editing. Y-SK: Material and Equipment Resources, Writing—Review & Editing, Supervision, Funding acquisition. All authors approved the final manuscript.
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Schuck, A., Kim, H.E., Kang, M. et al. Gold nanostar-modified electrochemical sensor for highly sensitive renin quantification as a marker of tissue-perfusion. MRS Communications 13, 1150–1155 (2023). https://doi.org/10.1557/s43579-023-00414-6
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DOI: https://doi.org/10.1557/s43579-023-00414-6