Release Profile and Antibacterial Activity of <i>Thymus sibthorpii</i> Essential Oil-Incorporated, Optimally Stabilized Type I Collagen Hydrogels
Antimicrobial resistance is one of the drastically increasing major global health threats due to the misuse and overuse of antibiotics as traditional antimicrobial agents, which render urgent the need for alternative and safer antimicrobial agents, such as essential oils (EOs). Although the strong a...
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2025-01-01
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| author | Caglar Ersanli Ioannis Skoufos Konstantina Fotou Athina Tzora Yves Bayon Despoina Mari Eleftheria Sarafi Konstantina Nikolaou Dimitrios I. Zeugolis |
| author_facet | Caglar Ersanli Ioannis Skoufos Konstantina Fotou Athina Tzora Yves Bayon Despoina Mari Eleftheria Sarafi Konstantina Nikolaou Dimitrios I. Zeugolis |
| author_sort | Caglar Ersanli |
| collection | DOAJ |
| description | Antimicrobial resistance is one of the drastically increasing major global health threats due to the misuse and overuse of antibiotics as traditional antimicrobial agents, which render urgent the need for alternative and safer antimicrobial agents, such as essential oils (EOs). Although the strong antimicrobial activity of various EOs has already been studied and revealed, their characteristic high sensitivity and volatility drives the need towards a more efficient drug administration method via a biomaterial system. Herein, the potential of <i>Thymus sibthorpii</i> EO incorporated in functionalized antibacterial collagen hydrogels was investigated. At first, the optimally stabilized type I collagen hydrogels via six different multi-arm poly (ethylene glycol) succinimidyl glutarate (starPEG) crosslinkers were determined by assessing the free amine content and the resistance to enzymatic degradation. Subsequently, 0.5, 1, and 2% <i>v</i>/<i>v</i> of EO were incorporated into optimized collagen hydrogels, and the release profile, as well as release kinetics, were studied. Finally, biomaterial cytocompatibility tests were performed. <i>Thymus sibthorpii</i> EO was released from the hydrogel matrix via Fickian diffusion and showed sustained release and 0.5% <i>v</i>/<i>v</i> EO-loaded hydrogels showed adequate antibacterial activity against <i>Staphylococcus aureus</i> and did not show any statistically significant difference compared to penicillin (<i>p</i> < 0.05). Moreover, none of the fabricated composite antibacterial scaffolds displayed any cytotoxicity on NIH-3T3 fibroblasts. In conclusion, this work presents an innovative antibacterial biomaterial system for tissue engineering applications, which could serve as a promising alternative to antibiotics, contributing to coping with the issue of antimicrobial resistance. |
| format | Article |
| id | doaj-art-6d3bc75df14c4172bf362f3b0885b3c9 |
| institution | Kabale University |
| issn | 2306-5354 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Bioengineering |
| spelling | doaj-art-6d3bc75df14c4172bf362f3b0885b3c92025-01-24T13:23:14ZengMDPI AGBioengineering2306-53542025-01-011218910.3390/bioengineering12010089Release Profile and Antibacterial Activity of <i>Thymus sibthorpii</i> Essential Oil-Incorporated, Optimally Stabilized Type I Collagen HydrogelsCaglar Ersanli0Ioannis Skoufos1Konstantina Fotou2Athina Tzora3Yves Bayon4Despoina Mari5Eleftheria Sarafi6Konstantina Nikolaou7Dimitrios I. Zeugolis8Laboratory of Animal Science, Nutrition and Biotechnology, School of Agriculture, University of Ioannina, 47100 Arta, GreeceLaboratory of Animal Science, Nutrition and Biotechnology, School of Agriculture, University of Ioannina, 47100 Arta, GreeceLaboratory of Animal Health, Food Hygiene and Quality, School of Agriculture, University of Ioannina, 47100 Arta, GreeceLaboratory of Animal Health, Food Hygiene and Quality, School of Agriculture, University of Ioannina, 47100 Arta, GreeceMedtronic—Sofradim Production, 116 Avenue du Formans—BP132, F-01600 Trevoux, FranceDepartment of Biological Applications & Technology, School of Health Sciences, University of Ioannina, 45110 Ioannina, GreeceDepartment of Biological Applications & Technology, School of Health Sciences, University of Ioannina, 45110 Ioannina, GreeceLaboratory of Animal Health, Food Hygiene and Quality, School of Agriculture, University of Ioannina, 47100 Arta, GreeceRegenerative, Modular & Developmental Engineering Laboratory (REMODEL), Charles Institute of Dermatology, Conway Institute of Biomolecular and Biomedical Research and School of Mechanical and Materials Engineering, University College Dublin (UCD), D04 V1W8 Dublin, IrelandAntimicrobial resistance is one of the drastically increasing major global health threats due to the misuse and overuse of antibiotics as traditional antimicrobial agents, which render urgent the need for alternative and safer antimicrobial agents, such as essential oils (EOs). Although the strong antimicrobial activity of various EOs has already been studied and revealed, their characteristic high sensitivity and volatility drives the need towards a more efficient drug administration method via a biomaterial system. Herein, the potential of <i>Thymus sibthorpii</i> EO incorporated in functionalized antibacterial collagen hydrogels was investigated. At first, the optimally stabilized type I collagen hydrogels via six different multi-arm poly (ethylene glycol) succinimidyl glutarate (starPEG) crosslinkers were determined by assessing the free amine content and the resistance to enzymatic degradation. Subsequently, 0.5, 1, and 2% <i>v</i>/<i>v</i> of EO were incorporated into optimized collagen hydrogels, and the release profile, as well as release kinetics, were studied. Finally, biomaterial cytocompatibility tests were performed. <i>Thymus sibthorpii</i> EO was released from the hydrogel matrix via Fickian diffusion and showed sustained release and 0.5% <i>v</i>/<i>v</i> EO-loaded hydrogels showed adequate antibacterial activity against <i>Staphylococcus aureus</i> and did not show any statistically significant difference compared to penicillin (<i>p</i> < 0.05). Moreover, none of the fabricated composite antibacterial scaffolds displayed any cytotoxicity on NIH-3T3 fibroblasts. In conclusion, this work presents an innovative antibacterial biomaterial system for tissue engineering applications, which could serve as a promising alternative to antibiotics, contributing to coping with the issue of antimicrobial resistance.https://www.mdpi.com/2306-5354/12/1/89antibacterial hydrogelessential oil<i>Thymus sibthorpii</i>collagenantimicrobial resistancetissue engineering |
| spellingShingle | Caglar Ersanli Ioannis Skoufos Konstantina Fotou Athina Tzora Yves Bayon Despoina Mari Eleftheria Sarafi Konstantina Nikolaou Dimitrios I. Zeugolis Release Profile and Antibacterial Activity of <i>Thymus sibthorpii</i> Essential Oil-Incorporated, Optimally Stabilized Type I Collagen Hydrogels Bioengineering antibacterial hydrogel essential oil <i>Thymus sibthorpii</i> collagen antimicrobial resistance tissue engineering |
| title | Release Profile and Antibacterial Activity of <i>Thymus sibthorpii</i> Essential Oil-Incorporated, Optimally Stabilized Type I Collagen Hydrogels |
| title_full | Release Profile and Antibacterial Activity of <i>Thymus sibthorpii</i> Essential Oil-Incorporated, Optimally Stabilized Type I Collagen Hydrogels |
| title_fullStr | Release Profile and Antibacterial Activity of <i>Thymus sibthorpii</i> Essential Oil-Incorporated, Optimally Stabilized Type I Collagen Hydrogels |
| title_full_unstemmed | Release Profile and Antibacterial Activity of <i>Thymus sibthorpii</i> Essential Oil-Incorporated, Optimally Stabilized Type I Collagen Hydrogels |
| title_short | Release Profile and Antibacterial Activity of <i>Thymus sibthorpii</i> Essential Oil-Incorporated, Optimally Stabilized Type I Collagen Hydrogels |
| title_sort | release profile and antibacterial activity of i thymus sibthorpii i essential oil incorporated optimally stabilized type i collagen hydrogels |
| topic | antibacterial hydrogel essential oil <i>Thymus sibthorpii</i> collagen antimicrobial resistance tissue engineering |
| url | https://www.mdpi.com/2306-5354/12/1/89 |
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