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A Carboxyethylchitosan Gel Cross-Linked with Glutaraldehyde as a Candidate Carrier for Biomedical Applications

To date, few publications describe CEC’s properties and possible applications—thus, further evaluation of these properties is a point of interest. The present in vitro model study aimed to evaluate a carboxyethylchitosan (CEC) gel with a degree of substitution of 1, cross-linked with glutaraldehyde...

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Autores principales: Korel, Anastasia, Samokhin, Alexander, Zemlyakova, Ekaterina, Pestov, Alexander, Blinova, Elena, Zelikman, Maxim, Tkachenko, Vadim, Bets, Viktoria, Kretien, Svetlana, Arzhanova, Elena, Litvinova, Ekaterina
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10531016/
https://www.ncbi.nlm.nih.gov/pubmed/37754437
http://dx.doi.org/10.3390/gels9090756
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author Korel, Anastasia
Samokhin, Alexander
Zemlyakova, Ekaterina
Pestov, Alexander
Blinova, Elena
Zelikman, Maxim
Tkachenko, Vadim
Bets, Viktoria
Kretien, Svetlana
Arzhanova, Elena
Litvinova, Ekaterina
author_facet Korel, Anastasia
Samokhin, Alexander
Zemlyakova, Ekaterina
Pestov, Alexander
Blinova, Elena
Zelikman, Maxim
Tkachenko, Vadim
Bets, Viktoria
Kretien, Svetlana
Arzhanova, Elena
Litvinova, Ekaterina
author_sort Korel, Anastasia
collection PubMed
description To date, few publications describe CEC’s properties and possible applications—thus, further evaluation of these properties is a point of interest. The present in vitro model study aimed to evaluate a carboxyethylchitosan (CEC) gel with a degree of substitution of 1, cross-linked with glutaraldehyde at a polymer:aldehyde molar ratio of 10:1, as a potential carrier for delivering bacteriophages to various pH-fixed media (acidic, alkaline), and including gastrointestinal tract (GIT) variable medium. A quantitative analysis of bacteriophages released from the gel was performed using photon correlation spectrophotometry, and phage activity after emission into medium was evaluated using the spot test. The results showed that the CEC gel’s maximum swelling ratios were at a nearly neutral alkaline pH. Increasing temperature enhances the swelling ratio of the gel independent from pH, up to 1127% at 37 °C and alkaline pH. The UV and photon correlation spectrophotometry showed equal gel release kinetics in both fixed media with acidic (pH = 2.2) and alkaline (pH = 7.4) pH environments at 37 °C, with the maximum release within two hours. However, phage lytic activity in the spot test during this simulation was absent. At the same time, we obtained an opaque phage lytic activity in the alkaline pH-fixed medium for at least three hours. Phages released from the tested CEC gel in different pHs suggest that this gel could be used for applications that require fast release at the treatment site both in acidic and alkaline pH. Such treatment sites could be a wound or even soil with mild acidic or alkaline pH. However, such CEC gel is not suitable as a delivery system to the GIT because of possible transported acid-sensitive agent (such as phages) release and destruction already in the stomach.
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spelling pubmed-105310162023-09-28 A Carboxyethylchitosan Gel Cross-Linked with Glutaraldehyde as a Candidate Carrier for Biomedical Applications Korel, Anastasia Samokhin, Alexander Zemlyakova, Ekaterina Pestov, Alexander Blinova, Elena Zelikman, Maxim Tkachenko, Vadim Bets, Viktoria Kretien, Svetlana Arzhanova, Elena Litvinova, Ekaterina Gels Article To date, few publications describe CEC’s properties and possible applications—thus, further evaluation of these properties is a point of interest. The present in vitro model study aimed to evaluate a carboxyethylchitosan (CEC) gel with a degree of substitution of 1, cross-linked with glutaraldehyde at a polymer:aldehyde molar ratio of 10:1, as a potential carrier for delivering bacteriophages to various pH-fixed media (acidic, alkaline), and including gastrointestinal tract (GIT) variable medium. A quantitative analysis of bacteriophages released from the gel was performed using photon correlation spectrophotometry, and phage activity after emission into medium was evaluated using the spot test. The results showed that the CEC gel’s maximum swelling ratios were at a nearly neutral alkaline pH. Increasing temperature enhances the swelling ratio of the gel independent from pH, up to 1127% at 37 °C and alkaline pH. The UV and photon correlation spectrophotometry showed equal gel release kinetics in both fixed media with acidic (pH = 2.2) and alkaline (pH = 7.4) pH environments at 37 °C, with the maximum release within two hours. However, phage lytic activity in the spot test during this simulation was absent. At the same time, we obtained an opaque phage lytic activity in the alkaline pH-fixed medium for at least three hours. Phages released from the tested CEC gel in different pHs suggest that this gel could be used for applications that require fast release at the treatment site both in acidic and alkaline pH. Such treatment sites could be a wound or even soil with mild acidic or alkaline pH. However, such CEC gel is not suitable as a delivery system to the GIT because of possible transported acid-sensitive agent (such as phages) release and destruction already in the stomach. MDPI 2023-09-16 /pmc/articles/PMC10531016/ /pubmed/37754437 http://dx.doi.org/10.3390/gels9090756 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Korel, Anastasia
Samokhin, Alexander
Zemlyakova, Ekaterina
Pestov, Alexander
Blinova, Elena
Zelikman, Maxim
Tkachenko, Vadim
Bets, Viktoria
Kretien, Svetlana
Arzhanova, Elena
Litvinova, Ekaterina
A Carboxyethylchitosan Gel Cross-Linked with Glutaraldehyde as a Candidate Carrier for Biomedical Applications
title A Carboxyethylchitosan Gel Cross-Linked with Glutaraldehyde as a Candidate Carrier for Biomedical Applications
title_full A Carboxyethylchitosan Gel Cross-Linked with Glutaraldehyde as a Candidate Carrier for Biomedical Applications
title_fullStr A Carboxyethylchitosan Gel Cross-Linked with Glutaraldehyde as a Candidate Carrier for Biomedical Applications
title_full_unstemmed A Carboxyethylchitosan Gel Cross-Linked with Glutaraldehyde as a Candidate Carrier for Biomedical Applications
title_short A Carboxyethylchitosan Gel Cross-Linked with Glutaraldehyde as a Candidate Carrier for Biomedical Applications
title_sort carboxyethylchitosan gel cross-linked with glutaraldehyde as a candidate carrier for biomedical applications
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10531016/
https://www.ncbi.nlm.nih.gov/pubmed/37754437
http://dx.doi.org/10.3390/gels9090756
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