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Zhou Y, Yang J, Li Y, Shu X, Cai Y, Xu P, Huang W, Yang Z, Li R. Multifunctional nanocomposites mediated novel hydrogel for diabetic wound repair. J Mater Chem B 2024; 12:3292-3306. [PMID: 38502068 DOI: 10.1039/d3tb02283h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/20/2024]
Abstract
The regeneration and repair of diabetic wounds, especially those including bacterial infection, have always been difficult and challenging using current treatment. Herein, an effective strategy is reported for constructing glucose-responsive functional hydrogels using nanocomposites as nodes. In fact, tannic acid (TA)-modified ceria nanocomposites (CNPs) and a zinc metal-organic framework (ZIF-8) were employed as nodes. Subsequent crosslinking with 3-acrylamidophenylboronic acid achieved functional nanocomposite-hydrogels (TA@CN gel, TA@ZMG gel) by radical-mediated polymerization. Compared with a simple physically mixed hydrogel system, the mechanical properties of TA@CN gel and TA@ZMG gel are significantly enhanced due to the intervention of the nanocomposite nodes. In addition, this kind of nanocomposite hydrogel can realize the programmed loading of drugs and release of drugs in response to glucose/PH, to coordinate and promote its application in the regeneration and repair of diabetic wounds and infected diabetic wounds. Specifically, TA@CN gel can remove reactive oxygen species and generate oxygen through its various enzymatic activities. At the same time, it can effectively promote neovascularization, thus promoting the regeneration and repair of diabetic wounds. Furthermore, glucose oxidase-loaded TA@ZMG gel exhibits glucose response and pH-regulating functions, triggering programmed metformin (Met) release by degrading the metal-organic framework (MOF) backbone. It also exhibited additional synergistic effects of antibacterial activity, hair regeneration and systemic blood glucose regulation, which make it suitable for the repair of more complex infected diabetic wounds. Overall, this novel nanocomposite-mediated hydrogel holds great potential as a biomaterial for the healing of chronic diabetic wounds, opening up new avenues for further biomedical applications.
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Affiliation(s)
- Yingjuan Zhou
- Center for Pharmaceutical Formulation and Nanomedicine Research, College of Pharmacy, Chongqing Medical University, Chongqing 400016, P.R. China.
| | - Jiaxin Yang
- Institute of Combined Injury, State Key Laboratory of Trauma, Burns and Combined Injury, Military Key Laboratory of Nanomedicine, Department of Military Preventive Medicine, Army Medical University, Chongqing, 400038, People's Republic of China.
| | - Yan Li
- Chongqing Engineering Research Center of Pharmaceutical Sciences, Chongqing Medical and Pharmaceutical College, Chongqing, 401331, P.R. China
| | - Xin Shu
- College of pharmacy, Chongqing Medical and Pharmaceutical College, China
| | - Yucen Cai
- Center for Pharmaceutical Formulation and Nanomedicine Research, College of Pharmacy, Chongqing Medical University, Chongqing 400016, P.R. China.
| | - Ping Xu
- Center for Pharmaceutical Formulation and Nanomedicine Research, College of Pharmacy, Chongqing Medical University, Chongqing 400016, P.R. China.
| | - Wenyan Huang
- Center for Pharmaceutical Formulation and Nanomedicine Research, College of Pharmacy, Chongqing Medical University, Chongqing 400016, P.R. China.
| | - Zhangyou Yang
- Center for Pharmaceutical Formulation and Nanomedicine Research, College of Pharmacy, Chongqing Medical University, Chongqing 400016, P.R. China.
| | - Rong Li
- Institute of Combined Injury, State Key Laboratory of Trauma, Burns and Combined Injury, Military Key Laboratory of Nanomedicine, Department of Military Preventive Medicine, Army Medical University, Chongqing, 400038, People's Republic of China.
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Pimenta J, Dias C, Cotovio M, Saavedra MJ. In Vitro Effect of Eucalyptus Essential Oils and Antiseptics (Chlorhexidine Gluconate and Povidone-Iodine) against Bacterial Isolates from Equine Wounds. Vet Sci 2023; 11:12. [PMID: 38250918 PMCID: PMC10819342 DOI: 10.3390/vetsci11010012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 12/23/2023] [Accepted: 12/25/2023] [Indexed: 01/23/2024] Open
Abstract
Considering the increasing antibiotics resistance, there has been a propensity to replace them with antiseptics when it comes to wound management and treatment. Nevertheless, in recent years, there have been reports regarding resistance to antiseptics by some bacterial strains. There is also concern about the environmental impact of these substances. The aim of this study was to compare the antimicrobial efficacy of antiseptics and eucalyptus essential oils on bacterial strains from horse's wounds. We used twelve Escherichia coli, eight Staphylococcus aureus, two Staphylococcus pseudintermedius, one Staphylococcus vitulinus and one Staphylococcus saprophyticus strains from equine wounds. The effect of Eucalyptus radiata essential oil, Eucalyptus globulus essential oil, povidone-iodine and chlorhexidine gluconate against the isolated strains was evaluated applying the Kirby-Baüer method. Regarding the Escherichia coli strains, E. radiata and the mixture of E. radiata and E. globulus had a better inhibitory effect than antiseptics. E. globulus had a better effect against most Staphylococcus spp. compared to E. radiata. For both Gram-negative and Gram-positive strains tested, chlorhexidine gluconate had a better inhibitory effect than povidone-iodine. The antibacterial efficacy of essential oils highlights their potential to substitute or complement the use of antiseptics and so reduce resistance to antiseptics.
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Affiliation(s)
- José Pimenta
- Department of Veterinary Sciences, Antimicrobials, Biocides & Biofilms Unit (A2BUnit), University of Trás-os-Montes and Alto Douro, 5000-801 Vila Real, Portugal; (J.P.); (C.D.); (M.C.)
- CECAV—Veterinary and Animal Research Center and Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), University of Trás-os-Montes e Alto Douro, 5000-801 Vila Real, Portugal
- CIVG—Vasco da Gama Research Center/EUVG–Vasco da Gama University School, 3020-210 Coimbra, Portugal
| | - Carla Dias
- Department of Veterinary Sciences, Antimicrobials, Biocides & Biofilms Unit (A2BUnit), University of Trás-os-Montes and Alto Douro, 5000-801 Vila Real, Portugal; (J.P.); (C.D.); (M.C.)
- CITAB—Centre for the Research and Technology of Agro-Environmental and Biological Sciences and Institute for Innovation, Capacity Building and Sustainability of Agri-Food Production (Inov4Agro), University of Trás-os-Montes and Alto Douro, 5000-801 Vila Real, Portugal
| | - Mário Cotovio
- Department of Veterinary Sciences, Antimicrobials, Biocides & Biofilms Unit (A2BUnit), University of Trás-os-Montes and Alto Douro, 5000-801 Vila Real, Portugal; (J.P.); (C.D.); (M.C.)
- CECAV—Veterinary and Animal Research Center and Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), University of Trás-os-Montes e Alto Douro, 5000-801 Vila Real, Portugal
- Faculty of Veterinary Medicine, Lusófona University, Campo Grande 376, 1749-024 Lisbon, Portugal
| | - Maria José Saavedra
- Department of Veterinary Sciences, Antimicrobials, Biocides & Biofilms Unit (A2BUnit), University of Trás-os-Montes and Alto Douro, 5000-801 Vila Real, Portugal; (J.P.); (C.D.); (M.C.)
- CECAV—Veterinary and Animal Research Center and Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), University of Trás-os-Montes e Alto Douro, 5000-801 Vila Real, Portugal
- CITAB—Centre for the Research and Technology of Agro-Environmental and Biological Sciences and Institute for Innovation, Capacity Building and Sustainability of Agri-Food Production (Inov4Agro), University of Trás-os-Montes and Alto Douro, 5000-801 Vila Real, Portugal
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Felgueiras HP. Green Antimicrobials. Antibiotics (Basel) 2023; 12:1128. [PMID: 37508223 PMCID: PMC10376511 DOI: 10.3390/antibiotics12071128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Accepted: 06/28/2023] [Indexed: 07/30/2023] Open
Abstract
In the last couple of years, the awareness of climate change and high pollution levels have raised our sense of ecological responsibility [...].
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Affiliation(s)
- Helena P Felgueiras
- Centre for Textile Science and Technology (2C2T), University of Minho, Campus de Azurém, 4800-058 Guimarães, Portugal
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