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Chacón M, Vázquez N, Alonso-Alonso S, Persinal-Medina M, Llames S, Pevida M, Alcalde I, Merayo-Lloves J, Meana Á. Improved Tool for Predicting Skin Irritation on Reconstructed Human Epidermis Models Based on Electrochemical Impedance Spectroscopy. BIOSENSORS 2023; 13:162. [PMID: 36831928 PMCID: PMC9953113 DOI: 10.3390/bios13020162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 01/17/2023] [Accepted: 01/17/2023] [Indexed: 06/18/2023]
Abstract
The rabbit skin irritation test has been the standard for evaluating the irritation potential of chemicals; however, alternative methods that do not use animal testing are actively encouraged. Reconstructed human epidermis (RhE) models mimic the biochemical and physiological properties of the human epidermis and can be used as an alternative method. On RhE methods, the metabolic activity of RhE models is used to predict skin irritation, with a reduction in metabolic activity indicating a reduced number of viable cells and linking cell death to skin irritation processes. However, new challenges have emerged as the use of RhE models increases, including the need for non-invasive and marker-free methodologies to assess cellular states. Electrochemical impedance spectroscopy (EIS) is one such methodology that can meet these requirements. In this study, our results showed that EIS can differentiate between irritant and non-irritant chemicals, with a significant increase in the capacitance values observed in the irritant samples. A ROC curve analysis showed that the prediction method based on EIS met OECD TG 439 requirements at all time points and had 95% within-laboratory reproducibility. Comparison with the MTT viability assay showed that prediction using EIS achieved higher sensitivity, specificity, and accuracy. These results suggest that EIS could potentially replace animal testing in the evaluation of irritation potential and could be a valuable addition to in vitro testing strategies.
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Affiliation(s)
- Manuel Chacón
- Instituto Universitario Fernández-Vega, Fundación de Investigación Oftalmológica, Universidad de Oviedo, Avda. Doctores Fernández-Vega, 33012 Oviedo, Spain
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Avda. del Hospital Universitario, 33011 Oviedo, Spain
| | - Natalia Vázquez
- Instituto Universitario Fernández-Vega, Fundación de Investigación Oftalmológica, Universidad de Oviedo, Avda. Doctores Fernández-Vega, 33012 Oviedo, Spain
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Avda. del Hospital Universitario, 33011 Oviedo, Spain
| | - Sergio Alonso-Alonso
- Instituto Universitario Fernández-Vega, Fundación de Investigación Oftalmológica, Universidad de Oviedo, Avda. Doctores Fernández-Vega, 33012 Oviedo, Spain
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Avda. del Hospital Universitario, 33011 Oviedo, Spain
| | - Mairobi Persinal-Medina
- Instituto Universitario Fernández-Vega, Fundación de Investigación Oftalmológica, Universidad de Oviedo, Avda. Doctores Fernández-Vega, 33012 Oviedo, Spain
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Avda. del Hospital Universitario, 33011 Oviedo, Spain
| | - Sara Llames
- Instituto Universitario Fernández-Vega, Fundación de Investigación Oftalmológica, Universidad de Oviedo, Avda. Doctores Fernández-Vega, 33012 Oviedo, Spain
- Centro de Investigación Biomédica en Red en Enfermedades Raras (CIBERER) ISCIII, 28029 Madrid, Spain
- Unidad de Ingeniería Tisular, Centro Comunitario de Sangre y Tejidos de Asturias (CCST), 33006 Oviedo, Spain
- Instituto de Investigación Sanitaria-Fundación Jiménez Díaz (IIS-FJD), 28015 Madrid, Spain
| | - Marta Pevida
- Instituto Universitario Fernández-Vega, Fundación de Investigación Oftalmológica, Universidad de Oviedo, Avda. Doctores Fernández-Vega, 33012 Oviedo, Spain
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Avda. del Hospital Universitario, 33011 Oviedo, Spain
- Centro de Investigación Biomédica en Red en Enfermedades Raras (CIBERER) ISCIII, 28029 Madrid, Spain
- Unidad de Ingeniería Tisular, Centro Comunitario de Sangre y Tejidos de Asturias (CCST), 33006 Oviedo, Spain
| | - Ignacio Alcalde
- Instituto Universitario Fernández-Vega, Fundación de Investigación Oftalmológica, Universidad de Oviedo, Avda. Doctores Fernández-Vega, 33012 Oviedo, Spain
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Avda. del Hospital Universitario, 33011 Oviedo, Spain
| | - Jesús Merayo-Lloves
- Instituto Universitario Fernández-Vega, Fundación de Investigación Oftalmológica, Universidad de Oviedo, Avda. Doctores Fernández-Vega, 33012 Oviedo, Spain
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Avda. del Hospital Universitario, 33011 Oviedo, Spain
| | - Álvaro Meana
- Instituto Universitario Fernández-Vega, Fundación de Investigación Oftalmológica, Universidad de Oviedo, Avda. Doctores Fernández-Vega, 33012 Oviedo, Spain
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Avda. del Hospital Universitario, 33011 Oviedo, Spain
- Centro de Investigación Biomédica en Red en Enfermedades Raras (CIBERER) ISCIII, 28029 Madrid, Spain
- Unidad de Ingeniería Tisular, Centro Comunitario de Sangre y Tejidos de Asturias (CCST), 33006 Oviedo, Spain
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Enhancement of electrocatalytic oxygen evolution by chiral molecular functionalization of hybrid 2D electrodes. Nat Commun 2022; 13:3356. [PMID: 35688831 PMCID: PMC9187664 DOI: 10.1038/s41467-022-31096-8] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Accepted: 05/31/2022] [Indexed: 11/08/2022] Open
Abstract
A sustainable future requires highly efficient energy conversion and storage processes, where electrocatalysis plays a crucial role. The activity of an electrocatalyst is governed by the binding energy towards the reaction intermediates, while the scaling relationships prevent the improvement of a catalytic system over its volcano-plot limits. To overcome these limitations, unconventional methods that are not fully determined by the surface binding energy can be helpful. Here, we use organic chiral molecules, i.e., hetero-helicenes such as thiadiazole-[7]helicene and bis(thiadiazole)-[8]helicene, to boost the oxygen evolution reaction (OER) by up to ca. 130 % (at the potential of 1.65 V vs. RHE) at state-of-the-art 2D Ni- and NiFe-based catalysts via a spin-polarization mechanism. Our results show that chiral molecule-functionalization is able to increase the OER activity of catalysts beyond the volcano limits. A guideline for optimizing the catalytic activity via chiral molecular functionalization of hybrid 2D electrodes is given.
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Suárez-Pantiga S, Redero P, Aniban X, Simon M, Golz C, Mata RA, Alcarazo M. In-Fjord Substitution in Expanded Helicenes: Effects of the Insert on the Inversion Barrier and Helical Pitch. Chemistry 2021; 27:13358-13366. [PMID: 34288171 PMCID: PMC8519012 DOI: 10.1002/chem.202102585] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Indexed: 01/23/2023]
Abstract
A series of expanded helicenes of different sizes and shapes incorporating phenyl- and biphenyl-substituents at the deepest part of their fjord have been synthesized via sequential Au-catalyzed hydroarylation of appropriately designed diynes, and their racemization barriers have been calculated employing electronic structure methods. These show that the overall profile of the inversions (energies, number of transition states and intermediates, and their relative position) is intensively affected by the interplay of steric and attractive London dispersion interactions. Hence, in-fjord substitution constitutes an additional tool to handle the mechanical properties in helicenes of uncommonly large diameter. The photochemical characterization of the newly prepared helical structures is also reported.
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Affiliation(s)
- Samuel Suárez-Pantiga
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077, Göttingen, Germany
| | - Pablo Redero
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077, Göttingen, Germany
| | - Xaiza Aniban
- Institut für Physikalische Chemie, Georg-August-Universität Göttingen, Tammannstraße 6, 37077, Göttingen, Germany
| | - Martin Simon
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077, Göttingen, Germany
| | - Christopher Golz
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077, Göttingen, Germany
| | - Ricardo A Mata
- Institut für Physikalische Chemie, Georg-August-Universität Göttingen, Tammannstraße 6, 37077, Göttingen, Germany
| | - Manuel Alcarazo
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077, Göttingen, Germany
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Using MoS2/Fe3O4 as Ion-Electron Transduction Layer to Manufacture All-Solid-State Ion-Selective Electrode for Determination of Serum Potassium. CHEMOSENSORS 2021. [DOI: 10.3390/chemosensors9070155] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
As an essential electrolyte for the human body, the potassium ion (K+) plays many physiological roles in living cells, so the rapid and accurate determination of serum K+ is of great significance. In this work, we developed a solid-contact ion-selective electrode (SC-ISE) using MoS2/Fe3O4 composites as the ion-to-electron transducer to determine serum K+. The potential response measurement of MoS2/Fe3O4/K+-ISE shows a Nernst response by a slope of 55.2 ± 0.1 mV/decade and a low detection limit of 6.3 × 10−6 M. The proposed electrode exhibits outstanding resistance to the interference of O2, CO2, light, and water layer formation. Remarkably, it also presents a high performance in potential reproducibility and long-term stability.
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Dhbaibi K, Favereau L, Crassous J. Enantioenriched Helicenes and Helicenoids Containing Main-Group Elements (B, Si, N, P). Chem Rev 2019; 119:8846-8953. [DOI: 10.1021/acs.chemrev.9b00033] [Citation(s) in RCA: 242] [Impact Index Per Article: 48.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Kais Dhbaibi
- ISCR (Institut des Sciences Chimiques de Rennes), UMR6226, CNRS, Université Rennes, F-35000 Rennes, France
- Faculty of Science of Gabès, University of Gabés, Zrig, 6072 Gabès Tunisia
| | - Ludovic Favereau
- ISCR (Institut des Sciences Chimiques de Rennes), UMR6226, CNRS, Université Rennes, F-35000 Rennes, France
| | - Jeanne Crassous
- ISCR (Institut des Sciences Chimiques de Rennes), UMR6226, CNRS, Université Rennes, F-35000 Rennes, France
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Su H, Ruan W, Ye S, Liu Y, Sui H, Li Z, Sun X, He C, Zhao B. Detection of physiological potassium ions level in human serum by Raman scattering spectroscopy. Talanta 2016; 161:743-747. [DOI: 10.1016/j.talanta.2016.09.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2016] [Revised: 08/31/2016] [Accepted: 09/03/2016] [Indexed: 11/28/2022]
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Tounsi M, Ben Braiek M, Baraket A, Lee M, Zine N, Zabala M, Bausells J, Aloui F, Ben Hassine B, Maaref A, Errachid A. Electrochemical Capacitive K+EMIS Chemical Sensor Based on the Dibromoaza[7]helicene as an Ionophore for Potassium Ions Detection. ELECTROANAL 2016. [DOI: 10.1002/elan.201600104] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Moncef Tounsi
- Laboratoire des Interfaces et des Matériaux Avancés (LIMA); Faculté des Sciences de Monastir; Université de Monastir; Tunisie
- Université de Lyon; Institut de Sciences Analytiques (ISA) - UMR 5280; 5 rue de la Doua 69100 Villeurbanne France
| | - Mourad Ben Braiek
- Laboratoire de Synthèse Organique Asymétrique et Catalyse Homogène; Faculté des Sciences; Université de Monastir
| | - Abdoullatif Baraket
- Université de Lyon; Institut de Sciences Analytiques (ISA) - UMR 5280; 5 rue de la Doua 69100 Villeurbanne France
| | - Michael Lee
- Université de Lyon; Institut de Sciences Analytiques (ISA) - UMR 5280; 5 rue de la Doua 69100 Villeurbanne France
| | - Nadia Zine
- Université de Lyon; Institut de Sciences Analytiques (ISA) - UMR 5280; 5 rue de la Doua 69100 Villeurbanne France
| | - Miguel Zabala
- Instituto de Microelectronica de Barcelona; IMB-CNM (CSIC); Campus UAB 08193 Bellaterra, Barcelona Spain
| | - Joan Bausells
- Instituto de Microelectronica de Barcelona; IMB-CNM (CSIC); Campus UAB 08193 Bellaterra, Barcelona Spain
| | - Faouzi Aloui
- Laboratoire de Synthèse Organique Asymétrique et Catalyse Homogène; Faculté des Sciences; Université de Monastir
| | - Béchir Ben Hassine
- Laboratoire de Synthèse Organique Asymétrique et Catalyse Homogène; Faculté des Sciences; Université de Monastir
| | - Abderrazak Maaref
- Laboratoire des Interfaces et des Matériaux Avancés (LIMA); Faculté des Sciences de Monastir; Université de Monastir; Tunisie
| | - Abdelhamid Errachid
- Université de Lyon; Institut de Sciences Analytiques (ISA) - UMR 5280; 5 rue de la Doua 69100 Villeurbanne France
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