Publication:
Multimodal biomedical implant with plasmonic and simulated body temperature responses

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Macromolecular Bioscience - 2023 - Mingot - Multimodal Biomedical Implant with Plasmonic and Simulated Body Temperature.pdf(5.1 MB)
Date
2023-04-28
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Authors
Mingot, Júlia ; Benejam, Nícolas ; Víllora Cano, Gloria ; Alemán, Carlos ; Armelin, Elaine ; Lanzalaco, Sonia
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Publisher
Wiley
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Ingeniería Química
DOI
https://doi.org/10.1002/mabi.202300118
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info:eu-repo/semantics/article
Description
© 2023 Wiley-VCH GmbH. This document is the Published version of a Published Work that appeared in final form in Macromolecular Bioscience. To access the final edited and published work see https://doi.org/10.1002/mabi.202300118
Abstract
This work presents a novel nanoparticle-based thermosensor implant able to reveal the precise temperature variations along the polymer filaments, as it contracts and expands due to changes in the macroscale local temperature. The multimodal device is able to trace the position and the temperature of a polypropylene mesh, employed in abdominal hernia repair, by combining plasmon resonance and Raman spectroscopy with hydrogel responsive system. The novelty relies on the attachment of the biocompatible nanoparticles, based on gold stabilized by a chitosan-shell, already charged with the Raman reporter (RaR) molecules, to the robust prosthesis, without the need of chemical linkers. The SERS enhanced effect observed is potentiated by the presence of a quite thick layer of the copolymer (poly(N-isopropylacrylamide)-co-poly(acrylamide)) hydrogel. At temperatures above the LCST of PNIPAAm-co-PAAm, the water molecules are expulsed and the hydrogel layer contracts, leaving the RaR molecules more accessible to the Raman source. In vitro studies with fibroblast cells reveal that the functionalized surgical mesh is biocompatible and no toxic substances are leached in the medium. The mesh sensor opens new frontiers to semi-invasive diagnosis and infection prevention in hernia repair by using SERS spectroscopy. It also offers new possibilities to the functionalization of other healthcare products.
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Chitosan , Gold nanoparticles , Polypropylene meshes , Surgical implants , Thermosensitive hydrogels
Citation
Macromol. Biosci. 2023, 23, 2300118
URI
http://hdl.handle.net/10201/149826
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