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Cernadas T, Pereira J, Melo BL, de Melo-Diogo D, Correia IJ, Alves P, Ferreira P. Renewable Photo-Cross-Linkable Polyester-Based Biomaterials: Synthesis, Characterization, and Cytocompatibility Assessment. Biomacromolecules 2024. [PMID: 39418667 DOI: 10.1021/acs.biomac.4c00599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2024]
Abstract
The present work consist of the synthesis of photo-cross-linkable materials, based on unsaturated polyesters (UPs), synthesized from biobased monomers from renewable sources such as itaconic acid and 1,4-butanediol. The UPs were characterized to assess the influence of polycondensation reaction temperature and cross-linking time on their final properties. For this purpose, different UV irradiation exposure periods were tested. Homogeneous, uniform, and transparent films were obtained after 1, 3, and 5 min of UV exposure. These cross-linked films were then characterized. All materials presented high gel content, which was dependent on the reaction's temperature. The thermal behaviors of the UPs were shown to be similar. In vitro hydrolytic degradation tests showed that the materials can undergo degradation in phosphate-buffered saline (PBS) at pH 7.4 and 37 °C, ensuring their biodegradability over time. Finally, to assess the applicability of the polyesters as biomaterials, their cytocompatibility was determined by using human dermal fibroblasts.
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Affiliation(s)
- Teresa Cernadas
- Department of Chemical Engineering, University of Coimbra, CERES, Coimbra 3030-790, Portugal
- Environment and Society (CERNAS), Polytechnic Institute of Coimbra, Research Centre for Natural Resources, Coimbra 3045-601, Portugal
| | - João Pereira
- Department of Chemical Engineering, University of Coimbra, CERES, Coimbra 3030-790, Portugal
| | - Bruna L Melo
- AEROG-LAETA, Aerospace Sciences Department, Universidade da Beira Interior, Covilhã 6201-001, Portugal
- CICS-UBI - Health Sciences Research Centre, University of Beira Interior, Av. Infante D. Henrique, Covilhã 6200-506, Portugal
| | - Duarte de Melo-Diogo
- CICS-UBI - Health Sciences Research Centre, University of Beira Interior, Av. Infante D. Henrique, Covilhã 6200-506, Portugal
| | - Ilídio J Correia
- Department of Chemical Engineering, University of Coimbra, CERES, Coimbra 3030-790, Portugal
- AEROG-LAETA, Aerospace Sciences Department, Universidade da Beira Interior, Covilhã 6201-001, Portugal
- CICS-UBI - Health Sciences Research Centre, University of Beira Interior, Av. Infante D. Henrique, Covilhã 6200-506, Portugal
| | - Patrícia Alves
- Department of Chemical Engineering, University of Coimbra, CERES, Coimbra 3030-790, Portugal
| | - Paula Ferreira
- Department of Chemical Engineering, University of Coimbra, CERES, Coimbra 3030-790, Portugal
- Environment and Society (CERNAS), Polytechnic Institute of Coimbra, Research Centre for Natural Resources, Coimbra 3045-601, Portugal
- Polytechnic Institute of Coimbra, Applied Research Institute, Rua da Misericórdia, Lagar dos Cortiços - S. Martinho do Bispo, Coimbra 3045-093, Portugal
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Dacrory S, D'Amora U, Longo A, Hasanin MS, Soriente A, Fasolino I, Kamel S, Al-Shemy MT, Ambrosio L, Scialla S. Chitosan/cellulose nanocrystals/graphene oxide scaffolds as a potential pH-responsive wound dressing: Tuning physico-chemical, pro-regenerative and antimicrobial properties. Int J Biol Macromol 2024; 278:134643. [PMID: 39128733 DOI: 10.1016/j.ijbiomac.2024.134643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Revised: 08/06/2024] [Accepted: 08/08/2024] [Indexed: 08/13/2024]
Abstract
Chronic wounds (CWs) treatment still represents a demanding medical challenge. Several intrinsic physiological signals (i.e., pH) help to stimulate and support wound healing. CWs, in fact, are characterized by a predominantly alkaline pH of the exudate, which acidifies as the wound heals. Therefore, pH-responsive wound dressings hold great potential owing to their capability of tuning their functions according to the wound conditions. Herein, porous chitosan (CS)-based scaffolds loaded with cellulose nanocrystals (CNCs) and graphene oxide (GO) were successfully fabricated using a freeze-drying method. CNCs were extracted from bagasse pulps fibers through acid hydrolysis. GO was synthesised by Hummer's method. The scaffolds were then ionically cross-linked using the amino acid L-Arginine (Arg), as a bioactive agent, and tested as potential pH-responsive wound dressing. Notably, the effect of CNCs and GO singly and simultaneously loaded within the CS-Arg scaffolds was investigated. The modulation of CNCs and GO content within CS-Arg scaffolds facilitated the development of scaffolds with an optimal pH-dependent swelling ratio capability and extended degradation time. Furthermore, CS/CNC/GO-Arg scaffolds exhibited tuned biological features, in terms of antimicrobial activity, cellular proliferation/migration ability, and the expression of extracellular matrix specific markers (i.e., elastin and collagen I) related to wound healing in human dermal fibroblasts.
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Affiliation(s)
- Sawsan Dacrory
- Cellulose and Paper Department, National Research Centre, 33 El Bohouth St., Cairo 12622, Egypt
| | - Ugo D'Amora
- Institute of Polymers, Composites and Biomaterials, National Research Council (IPCB-CNR), Mostra d'Oltremare, Pad. 20, V. le J.F. Kennedy 54, 80125 Naples, Italy
| | - Angela Longo
- Institute of Polymers, Composites and Biomaterials, National Research Council (IPCB-CNR), Mostra d'Oltremare, Pad. 20, V. le J.F. Kennedy 54, 80125 Naples, Italy
| | - Mohamed S Hasanin
- Cellulose and Paper Department, National Research Centre, 33 El Bohouth St., Cairo 12622, Egypt
| | - Alessandra Soriente
- Institute of Polymers, Composites and Biomaterials, National Research Council (IPCB-CNR), Mostra d'Oltremare, Pad. 20, V. le J.F. Kennedy 54, 80125 Naples, Italy
| | - Ines Fasolino
- Institute of Polymers, Composites and Biomaterials, National Research Council (IPCB-CNR), Mostra d'Oltremare, Pad. 20, V. le J.F. Kennedy 54, 80125 Naples, Italy
| | - Samir Kamel
- Cellulose and Paper Department, National Research Centre, 33 El Bohouth St., Cairo 12622, Egypt
| | - Mona T Al-Shemy
- Cellulose and Paper Department, National Research Centre, 33 El Bohouth St., Cairo 12622, Egypt
| | - Luigi Ambrosio
- Institute of Polymers, Composites and Biomaterials, National Research Council (IPCB-CNR), Mostra d'Oltremare, Pad. 20, V. le J.F. Kennedy 54, 80125 Naples, Italy
| | - Stefania Scialla
- Institute of Polymers, Composites and Biomaterials, National Research Council (IPCB-CNR), Mostra d'Oltremare, Pad. 20, V. le J.F. Kennedy 54, 80125 Naples, Italy.
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Yan S, Xu S, Wang Y, You J, Guo C, Wu X. A Hydrogel Dressing Comprised of Silk Fibroin, Ag Nanoparticles, and Reduced Graphene Oxide for NIR Photothermal-Enhanced Antibacterial Efficiency and Skin Regeneration. Adv Healthc Mater 2024; 13:e2400884. [PMID: 38701326 DOI: 10.1002/adhm.202400884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2024] [Revised: 04/30/2024] [Indexed: 05/05/2024]
Abstract
Bacterial infection, inflammation, and excessive oxidative stress are the primary factors that contribute to delayed healing of skin wounds. In this study, a multifunctional wound dressing (SF/Ag@rGO hydrogel) is developed to promote the healing of infected skin wounds by combining the inherent antibacterial activity of Ag nanoparticles (NPs) with near-infrared (NIR)-assisted antibacterial therapy. Initially, L-ascorbic acid is used as a reducing agent and PVP-K17 as a stabilizer and dispersant, this facilitates the synthesis of reduced graphene oxide loaded with Ag NPs (Ag@rGO). Ag@rGO is then blended with a silk fibroin (SF) solution to form an instantly gelling SF/Ag@rGO hydrogel that exhibits rapid self-healing, injectability, shape adaptability, NIR responsiveness, antioxidant, high tissue adhesion, and robust mechanical properties. In vitro and in vivo experiments show that the SF/Ag@rGO hydrogel demonstrates strong antioxidant and photothermal antibacterial capabilities, promoting wound healing through angiogenesis, stimulating collagen generation, alleviating inflammation, antioxidant, and promoting cell proliferation, indicating that the SF/Ag@rGO hydrogel dressing is an ideal candidate for clinical treatment of full-thickness bacterial-stained wounds.
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Affiliation(s)
- Shaorong Yan
- Department of Pharmacy, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China
| | - Shuo Xu
- Department of Pharmacy, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China
| | - Yu Wang
- Department of Pharmacy, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China
| | - Jun You
- Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei University, Youyi Road 368, Wuhan, 430062, China
| | - Chuanlong Guo
- Department of Pharmacy, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China
| | - Xiaochen Wu
- Department of Pharmacy, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China
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Sun J, Dai L, Lv K, Wen Z, Li Y, Yang D, Yan H, Liu X, Liu C, Li MC. Recent advances in nanomaterial-stabilized pickering foam: Mechanism, classification, properties, and applications. Adv Colloid Interface Sci 2024; 328:103177. [PMID: 38759448 DOI: 10.1016/j.cis.2024.103177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 04/07/2024] [Accepted: 05/03/2024] [Indexed: 05/19/2024]
Abstract
Pickering foam is a type of foam stabilized by solid particles known as Pickering stabilizers. These solid stabilizers adsorb at the liquid-gas interface, providing superior stability to the foam. Because of its high stability, controllability, versatility, and minimal environmental impact, nanomaterial-stabilized Pickering foam has opened up new possibilities and development prospects for foam applications. This review provides an overview of the current state of development of Pickering foam stabilized by a wide range of nanomaterials, including cellulose nanomaterials, chitin nanomaterials, silica nanoparticles, protein nanoparticles, clay mineral, carbon nanotubes, calcium carbonate nanoparticles, MXene, and graphene oxide nanosheets. Particularly, the preparation and surface modification methods of various nanoparticles, the fundamental properties of nanomaterial-stabilized Pickering foam, and the synergistic effects between nanoparticles and surfactants, functional polymers, and other additives are systematically introduced. In addition, the latest progress in the application of nanomaterial-stabilized Pickering foam in the oil industry, food industry, porous functional material, and foam flotation field is highlighted. Finally, the future prospects of nanomaterial-stabilized Pickering foam in different fields, along with directions for further research and development directions, are outlined.
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Affiliation(s)
- Jinsheng Sun
- School of Petroleum Engineering, China University of Petroleum (East China), Qingdao, Shandong 266580, China; Key Laboratory of Unconventional Oil & Gas Development (China University of Petroleum (East China)), Ministry of Education, Qingdao, Shandong 266580, China
| | - Liyao Dai
- School of Petroleum Engineering, China University of Petroleum (East China), Qingdao, Shandong 266580, China
| | - Kaihe Lv
- School of Petroleum Engineering, China University of Petroleum (East China), Qingdao, Shandong 266580, China; Key Laboratory of Unconventional Oil & Gas Development (China University of Petroleum (East China)), Ministry of Education, Qingdao, Shandong 266580, China
| | - Zhibo Wen
- School of Petroleum Engineering, China University of Petroleum (East China), Qingdao, Shandong 266580, China
| | - Yecheng Li
- School of Petroleum Engineering, China University of Petroleum (East China), Qingdao, Shandong 266580, China
| | - Dongqing Yang
- School of Petroleum Engineering, China University of Petroleum (East China), Qingdao, Shandong 266580, China
| | - Hao Yan
- School of Petroleum Engineering, China University of Petroleum (East China), Qingdao, Shandong 266580, China
| | - Xinyue Liu
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Chaozheng Liu
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Mei-Chun Li
- School of Petroleum Engineering, China University of Petroleum (East China), Qingdao, Shandong 266580, China; Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China; Key Laboratory of Unconventional Oil & Gas Development (China University of Petroleum (East China)), Ministry of Education, Qingdao, Shandong 266580, China.
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5
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P CL, L M, Jhajharia SK, W A, Muthuvijayan V, Paramasivan M, Gonmei MC, Padmanabhan MK, Jeyaraman M, Mahajan RL. Edge-functionalized coal-derived graphene oxide in bacterial nanocellulose hydrogel for active wound healing. Int J Biol Macromol 2024; 272:132589. [PMID: 38788882 DOI: 10.1016/j.ijbiomac.2024.132589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 05/10/2024] [Accepted: 05/21/2024] [Indexed: 05/26/2024]
Abstract
This work presents a comparison of physicochemical and in vitro active wound healing properties of two distinct Graphene Oxides (GOs) from graphite and coal. These GOs are incorporated in Bacterial Nanocellulose (BNC) to form hydrogels. The performance and limitations of the loading fraction of both GOs in BNC are controlled by the processing technology and the source materials from which GOs are derived. Edge functionalization with C-GO offers the advantage of facilitating face-to-edge assembly in the hydrogel leading to better dispersion than the face-to-face assembly of basal functionalized G-GO. The latter leads to more aggregation of G-GO, resulting in a lower optimal loading fraction. Our investigation into the antibacterial properties of the BNC and BNC/GO hydrogels against gram-negative E. coli revealed inhibitory effects of the BNC/GO hydrogels that intensified with an increase in the concentration of GO. Furthermore, an in vitro wound scratch assay demonstrated that BNC/C-GO hydrogels promote better cell migration, confirming their superior biocompatibility and suitability as active wound dressings, albeit limited by loading fraction due to agglomeration. These findings shed light on the performance and limitations of GOs for diverse applications, emphasizing the significance of exploring the influence of different methods and source materials of GOs.
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Affiliation(s)
- Chithra Lekha P
- Centre for Clinical and Translational Research, Healthcare Technologies Division, Virginia Tech India Research and Education Forum, Indian Institute of Technology Madras Research Park, Chennai 600 113, Tamil Nadu, INDIA; Department of Physics, Dr MGR Educational and Research Institute, Madhuravoyal, Chennai 600 095, Tamil Nadu, INDIA.
| | - Marini L
- Centre for Nanoscience and Technology, AC Tech Campus, Anna University, Chennai 600 025, Tamil Nadu, India
| | - Suman K Jhajharia
- Centre for Clinical and Translational Research, Healthcare Technologies Division, Virginia Tech India Research and Education Forum, Indian Institute of Technology Madras Research Park, Chennai 600 113, Tamil Nadu, INDIA; Department of Mechanical Engineering, Virginia Tech, Blacksburg, VA 24061, USA
| | - Aadinath W
- Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai 600 036, Tamil Nadu, INDIA
| | - Vignesh Muthuvijayan
- Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai 600 036, Tamil Nadu, INDIA
| | - Mareeswari Paramasivan
- Centre for Clinical and Translational Research, Healthcare Technologies Division, Virginia Tech India Research and Education Forum, Indian Institute of Technology Madras Research Park, Chennai 600 113, Tamil Nadu, INDIA
| | - Monica Chingchuilin Gonmei
- Centre for Clinical and Translational Research, Healthcare Technologies Division, Virginia Tech India Research and Education Forum, Indian Institute of Technology Madras Research Park, Chennai 600 113, Tamil Nadu, INDIA
| | - M K Padmanabhan
- Dr MGR Educational and Research Institute, Chennai, Tamil Nadu 600 095, INDIA
| | - Madhan Jeyaraman
- Department of Orthopaedics, ACS Medical College and Hospital, Dr MGR Educational and Research Institute, Chennai, Tamil Nadu 600 077, INDIA
| | - Roop L Mahajan
- Department of Mechanical Engineering, Department of Materials Science and Engineering, Virginia Tech, Blacksburg, VA 24061, USA.
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Yousefi M, Ghahremanzadeh R, Nejadmoghaddam MR, Samadi FY, Najafzadeh S, Fatideh FM, Mohammadi Z, Minai-Tehrani A. Nanofabrication of chitosan-based dressing to treat the infected wounds: in vitro and in vivo evaluations. Future Sci OA 2024; 10:FSO921. [PMID: 38827799 PMCID: PMC11140651 DOI: 10.2144/fsoa-2023-0077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Accepted: 10/12/2023] [Indexed: 06/05/2024] Open
Abstract
Aim: Here, an innovative kind of antibacterial nanocomposite film is developed by incorporating graphene oxide and zinc oxide into chitosan matrix. Materials & methods: Our dressing was fabricated using the solution casting method. Fourier transform infrared spectra and TGA-DTG clearly confirmed the structure of film dressing. Results & conclusion: Our results showed the tensile strength and elongation at the break of the films were 20.1 ± 0.7 MPa and 36 ± 10%, respectively. Our fabricated film could absorb at least three-times the fluid of its dry weight while being biocompatible, antibacterial, non-irritant and non-allergic. In addition, it accelerated the healing process of infected wounds by regulating epithelium thickness and the number of inflammatory cells, thus it may be useful for direct application to damaged infected wounds.
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Affiliation(s)
- Maryam Yousefi
- Nanobiotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, 1983969412, Iran
| | - Ramin Ghahremanzadeh
- Nanobiotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, 1983969412, Iran
| | | | - Fatemeh Yazdi Samadi
- Nanobiotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, 1983969412, Iran
| | - Somayeh Najafzadeh
- Nanobiotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, 1983969412, Iran
| | | | - Zohreh Mohammadi
- Department of Pharmaceutics & Pharmaceutical Nanotechnology, School of Pharmacy, Iran University of Medical Sciences, Tehran, 1475886973, Iran
| | - Arash Minai-Tehrani
- Nanobiotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, 1983969412, Iran
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7
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Cabral CSD, de Melo-Diogo D, Ferreira P, Moreira AF, Correia IJ. Reduced graphene oxide-reinforced tricalcium phosphate/gelatin/chitosan light-responsive scaffolds for application in bone regeneration. Int J Biol Macromol 2024; 259:129210. [PMID: 38184039 DOI: 10.1016/j.ijbiomac.2024.129210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 12/07/2023] [Accepted: 01/01/2024] [Indexed: 01/08/2024]
Abstract
Bone is a mineralized tissue with the intrinsic capacity for constant remodeling. Rapid prototyping techniques, using biomaterials that mimic the bone native matrix, have been used to develop osteoinductive and osteogenic personalized 3D structures, which can be further combined with drug delivery and phototherapy. Herein, a Fab@Home 3D Plotter printer was used to promote the layer-by-layer deposition of a composite mixture of gelatin, chitosan, tricalcium phosphate, and reduced graphene oxide (rGO). The phototherapeutic potential of the new NIR-responsive 3D_rGO scaffolds was assessed by comparing scaffolds with different rGO concentrations (1, 2, and 4 mg/mL). The data obtained show that the rGO incorporation confers to the scaffolds the capacity to interact with NIR light and induce a hyperthermy effect, with a maximum temperature increase of 16.7 °C after under NIR irradiation (10 min). Also, the increase in the rGO content improved the hydrophilicity and mechanical resistance of the scaffolds, particularly in the 3D_rGO4. Furthermore, the rGO could confer an NIR-triggered antibacterial effect to the 3D scaffolds, without compromising the osteoblasts' proliferation and viability. In general, the obtained data support the development of 3D_rGO for being applied as temporary scaffolds supporting the new bone tissue formation and avoiding the establishment of bacterial infections.
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Affiliation(s)
- Cátia S D Cabral
- CICS-UBI - Centro de Investigação em Ciências da Saúde, Universidade da Beira Interior, Covilhã, Portugal
| | - Duarte de Melo-Diogo
- CICS-UBI - Centro de Investigação em Ciências da Saúde, Universidade da Beira Interior, Covilhã, Portugal
| | - Paula Ferreira
- Instituto Politécnico de Coimbra, Instituto de Investigação Aplicada, Coimbra, Portugal
| | - André F Moreira
- CICS-UBI - Centro de Investigação em Ciências da Saúde, Universidade da Beira Interior, Covilhã, Portugal; CPIRN-UDI/IPG - Centro de Potencial e Inovação em Recursos Naturais, Unidade de Investigação para o Desenvolvimento do Interior, Instituto Politécnico da Guarda, Guarda, Portugal.
| | - Ilídio J Correia
- CICS-UBI - Centro de Investigação em Ciências da Saúde, Universidade da Beira Interior, Covilhã, Portugal; CIEPQPF - Departamento Engenharia Química, Universidade de Coimbra, Coimbra, Portugal.
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8
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Ndlovu SP, Alven S, Hlalisa K, Aderibigbe BA. Cellulose Acetate-Based Wound Dressings Loaded with Bioactive Agents: Potential Scaffolds for Wound Dressing and Skin Regeneration. Curr Drug Deliv 2024; 21:1226-1240. [PMID: 37842887 DOI: 10.2174/0115672018262616231001191356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 07/25/2023] [Accepted: 08/18/2023] [Indexed: 10/17/2023]
Abstract
Wound healing and skin regeneration are major challenges in chronic wounds. Among the types of wound dressing products currently available in the market, each wound dressing material is designed for a specific wound type. Some of these products suffer from various shortcomings, such as poor antibacterial efficacy and mechanical performance, inability to provide a moist environment, poor permeability to oxygen and capability to induce cell migration and proliferation during the wound healing process. Hydrogels and nanofibers are widely reported wound dressings that have demonstrated promising capability to overcome these shortcomings. Cellulose acetate is a semisynthetic polymer that has attracted great attention in the fabrication of hydrogels and nanofibers. Loading bioactive agents such as antibiotics, essential oils, metallic nanoparticles, plant extracts, and honey into cellulose acetate-based nanofibers and hydrogels enhanced their biological effects, including antibacterial, antioxidant, and wound healing. This review reports cellulose acetate-based hydrogels and nanofibers loaded with bioactive agents for wound dressing and skin regeneration.
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Affiliation(s)
- Sindi P Ndlovu
- Department of Chemistry, University of Fort Hare, Alice, Eastern Cape, 5700, South Africa
| | - Sibusiso Alven
- Department of Chemistry, University of Fort Hare, Alice, Eastern Cape, 5700, South Africa
| | - Kula Hlalisa
- Department of Chemistry, University of Fort Hare, Alice, Eastern Cape, 5700, South Africa
| | - Blessing A Aderibigbe
- Department of Chemistry, University of Fort Hare, Alice, Eastern Cape, 5700, South Africa
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9
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Isopencu GO, Covaliu-Mierlă CI, Deleanu IM. From Plants to Wound Dressing and Transdermal Delivery of Bioactive Compounds. PLANTS (BASEL, SWITZERLAND) 2023; 12:2661. [PMID: 37514275 PMCID: PMC10386126 DOI: 10.3390/plants12142661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 07/10/2023] [Accepted: 07/14/2023] [Indexed: 07/30/2023]
Abstract
Transdermal delivery devices and wound dressing materials are constantly improved and upgraded with the aim of enhancing their beneficial effects, biocompatibility, biodegradability, and cost effectiveness. Therefore, researchers in the field have shown an increasing interest in using natural compounds as constituents for such systems. Plants, as an important source of so-called "natural products" with an enormous variety and structural diversity that still exceeds the capacity of present-day sciences to define or even discover them, have been part of medicine since ancient times. However, their benefits are just at the beginning of being fully exploited in modern dermal and transdermal delivery systems. Thus, plant-based primary compounds, with or without biological activity, contained in gums and mucilages, traditionally used as gelling and texturing agents in the food industry, are now being explored as valuable and cost-effective natural components in the biomedical field. Their biodegradability, biocompatibility, and non-toxicity compensate for local availability and compositional variations. Also, secondary metabolites, classified based on their chemical structure, are being intensively investigated for their wide pharmacological and toxicological effects. Their impact on medicine is highlighted in detail through the most recent reported studies. Innovative isolation and purification techniques, new drug delivery devices and systems, and advanced evaluation procedures are presented.
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Affiliation(s)
- Gabriela Olimpia Isopencu
- Department of Chemical and Biochemical Engineering, University Politehnica of Bucharest, Polizu Str. 1-7, 011061 Bucharest, Romania
| | - Cristina-Ileana Covaliu-Mierlă
- Department of Biotechnical Systems, Faculty of Biotechnical Systems Engineering, University Politehnica of Bucharest, 313 Splaiul Independentei, 060042 Bucharest, Romania
| | - Iuliana-Mihaela Deleanu
- Department of Chemical and Biochemical Engineering, University Politehnica of Bucharest, Polizu Str. 1-7, 011061 Bucharest, Romania
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10
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Pontinha ADR, Moreira BB, Melo BL, Melo-Diogo DD, Correia IJ, Alves P. Silica Aerogel-Polycaprolactone Scaffolds for Bone Tissue Engineering. Int J Mol Sci 2023; 24:10128. [PMID: 37373280 DOI: 10.3390/ijms241210128] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 06/07/2023] [Accepted: 06/09/2023] [Indexed: 06/29/2023] Open
Abstract
Silica aerogel is a material composed of SiO2 that has exceptional physical properties when utilized for tissue engineering applications. Poly-ε-caprolactone (PCL) is a biodegradable polyester that has been widely used for biomedical applications, namely as sutures, drug carriers, and implantable scaffolds. Herein, a hybrid composite of silica aerogel, prepared with two different silica precursors, tetraethoxysilane (TEOS) or methyltrimethoxysilane (MTMS), and PCL was synthesized to fulfil bone regeneration requirements. The developed porous hybrid biocomposite scaffolds were extensively characterized, regarding their physical, morphological, and mechanical features. The results showed that their properties were relevant, leading to composites with different properties. The water absorption capacity and mass loss were evaluated as well as the influence of the different hybrid scaffolds on osteoblasts' viability and morphology. Both hybrid scaffolds showed a hydrophobic character (with water contact angles higher than 90°), low swelling (maximum of 14%), and low mass loss (1-7%). hOB cells exposed to the different silica aerogel-PCL scaffolds remained highly viable, even for long periods of incubation (7 days). Considering the obtained results, the produced hybrid scaffolds may be good candidates for future application in bone tissue engineering.
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Affiliation(s)
- Ana Dora Rodrigues Pontinha
- University of Coimbra, CIEPQPF, Department of Chemical Engineering, Faculty of Sciences and Technology, Rua Sílvio Lima, 3030-790 Coimbra, Portugal
- University of Coimbra, ISISE, Department of Civil Engineering, Rua Luís Reis Santos, 3030-788 Coimbra, Portugal
| | - Beatriz Barbosa Moreira
- University of Coimbra, CIEPQPF, Department of Chemical Engineering, Faculty of Sciences and Technology, Rua Sílvio Lima, 3030-790 Coimbra, Portugal
| | - Bruna Lopes Melo
- CICS-UBI, Centro de Investigação em Ciências da Saúde, Universidade da Beira Interior, 6200-506 Covilhã, Portugal
| | - Duarte de Melo-Diogo
- CICS-UBI, Centro de Investigação em Ciências da Saúde, Universidade da Beira Interior, 6200-506 Covilhã, Portugal
| | - Ilídio Joaquim Correia
- CICS-UBI, Centro de Investigação em Ciências da Saúde, Universidade da Beira Interior, 6200-506 Covilhã, Portugal
| | - Patrícia Alves
- University of Coimbra, CIEPQPF, Department of Chemical Engineering, Faculty of Sciences and Technology, Rua Sílvio Lima, 3030-790 Coimbra, Portugal
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Prospective features of functional 2D nanomaterial graphene oxide in the wound healing process. J Drug Deliv Sci Technol 2023. [DOI: 10.1016/j.jddst.2023.104352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
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