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Patella B, Di Vincenzo S, Moukri N, Bonafede F, Ferraro M, Lazzara V, Giuffrè MR, Carbone S, Aiello G, Russo M, Cipollina C, Inguanta R, Pace E. Gold nanowires-based sensor for quantification of H 2O 2 released by human airway epithelial cells. Talanta 2024; 272:125772. [PMID: 38367400 DOI: 10.1016/j.talanta.2024.125772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 01/08/2024] [Accepted: 02/07/2024] [Indexed: 02/19/2024]
Abstract
Hydrogen peroxide (H2O2) is a biomarker relevant for oxidative stress monitoring. Most chronic airway diseases are characterized by increased oxidative stress. To date, the main methods for the detection of this analyte are expensive and time-consuming laboratory techniques such as fluorometric and colorimetric assays. There is a growing interest in the development of electrochemical sensors for H2O2 detection due to their low cost, ease of use, sensitivity and rapid response. In this work, an electrochemical sensor based on gold nanowire arrays has been developed. Thanks to the catalytic activity of gold against hydrogen peroxide reduction and the high surface area of nanowires, this sensor allows the quantification of this analyte in a fast, efficient and selective way. The sensor was obtained by template electrodeposition and consists of gold nanowires about 5 μm high and with an average diameter of about 200 nm. The high active surface area of this electrode, about 7 times larger than a planar gold electrode, ensured a high sensitivity of the sensor (0.98 μA μM-1cm-2). The sensor allows the quantification of hydrogen peroxide in the range from 10 μM to 10 mM with a limit of detection of 3.2 μM. The sensor has excellent properties in terms of reproducibility, repeatability and selectivity. The sensor was validated by quantifying the hydrogen peroxide released by human airways A549 cells exposed or not to the pro-oxidant compound rotenone. The obtained results were validated by comparing them with those obtained by flow cytometry after staining the cells with the fluorescent superoxide-sensitive Mitosox Red probe giving a very good concordance.
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Affiliation(s)
- Bernardo Patella
- Department of Engineering, University of Palermo, Palermo, 90128, Italy
| | - Serena Di Vincenzo
- Institute of Translational Pharmacology (IFT), National Research Council of Italy (CNR), Palermo, 90146, Italy
| | - Nadia Moukri
- Department of Engineering, University of Palermo, Palermo, 90128, Italy
| | | | - Maria Ferraro
- Institute of Translational Pharmacology (IFT), National Research Council of Italy (CNR), Palermo, 90146, Italy
| | - Valentina Lazzara
- Department of Health Promotion Sciences, Maternal and Infant Care, Internal Medicine and Medical Specialties (PROMISE), University of Palermo, Palermo, 90127, Italy
| | | | - Sonia Carbone
- Department of Engineering, University of Palermo, Palermo, 90128, Italy
| | - Giuseppe Aiello
- Department of Engineering, University of Palermo, Palermo, 90128, Italy
| | | | - Chiara Cipollina
- Institute of Translational Pharmacology (IFT), National Research Council of Italy (CNR), Palermo, 90146, Italy; Ri.MED Foundation, Palermo, 90146, Italy
| | - Rosalinda Inguanta
- Department of Engineering, University of Palermo, Palermo, 90128, Italy; Institute of Translational Pharmacology (IFT), National Research Council of Italy (CNR), Palermo, 90146, Italy.
| | - Elisabetta Pace
- Institute of Translational Pharmacology (IFT), National Research Council of Italy (CNR), Palermo, 90146, Italy
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Arena R, Lima S, Villanova V, Moukri N, Curcuraci E, Messina C, Santulli A, Scargiali F. Cultivation and biochemical characterization of isolated Sicilian microalgal species in salt and temperature stress conditions. ALGAL RES 2021. [DOI: 10.1016/j.algal.2021.102430] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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