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Ribeiro ARM, Teixeira MO, Ribeiro L, Tavares TD, Miranda CS, Costa AF, Ribeiro A, Silva MM, Silva C, Felgueiras HP. Sodium alginate-based multifunctional sandwich-like system for treating wound infections. BIOMATERIALS ADVANCES 2024; 162:213931. [PMID: 38924805 DOI: 10.1016/j.bioadv.2024.213931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Revised: 05/29/2024] [Accepted: 06/18/2024] [Indexed: 06/28/2024]
Abstract
Microbial colonization and development of infections in wounds is a sign of chronicity. The prevailing approach to manage and treat these wounds involves dressings. However, these often fail in effectively addressing infections, as they struggle to both absorb exudates and maintain optimal local moisture. The system here presented was conceptualized with a three-layer design: the outer layer made of a fibrous polycaprolactone (PCL) film, to act as a barrier for preventing microorganisms and impurities from reaching the wound; the intermediate layer formed of a sodium alginate (SA) hydrogel loaded with ampicillin (Amp) for fighting infections; and the inner layer comprised of a fibrous film of PCL and polyethylene glycol (PEG) for facilitating cell recognition and preventing wound adhesion. Thermal evaluations, degradation, wettability and release behavior testing confirmed the system resistance overtime. The sandwich demonstrated the capability for absorbing exudates (≈70 %) and exhibited a controlled release of Amp for up to 24 h. Antimicrobial testing was performed against Staphylococcus aureus and Escherichia coli, as representatives of Gram-positive and Gram-negative bacteria: >99 % elimination of bacteria. Cell cytotoxicity assessments showed high cytocompatibility levels, confirming the safety of the proposed sandwich system. Adhesion assays confirmed the system ease of detaching without mechanical effort (0.37 N). Data established the efficiency of the sandwich-like system, suggesting promising applications in infected wound care.
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Affiliation(s)
- Ana R M Ribeiro
- Centre for Textile Science and Technology (2C2T), University of Minho, Campus de Azurém, 4800-058 Guimarães, Portugal
| | - Marta O Teixeira
- Centre for Textile Science and Technology (2C2T), University of Minho, Campus de Azurém, 4800-058 Guimarães, Portugal
| | - Lara Ribeiro
- Centre for Textile Science and Technology (2C2T), University of Minho, Campus de Azurém, 4800-058 Guimarães, Portugal; Centre of Biological Engineering (CEB), University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Tânia D Tavares
- Centre for Textile Science and Technology (2C2T), University of Minho, Campus de Azurém, 4800-058 Guimarães, Portugal
| | - Catarina S Miranda
- Centre for Textile Science and Technology (2C2T), University of Minho, Campus de Azurém, 4800-058 Guimarães, Portugal
| | - André F Costa
- Centre of Biological Engineering (CEB), University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Artur Ribeiro
- Centre of Biological Engineering (CEB), University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - M Manuela Silva
- Centre of Chemistry, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Carla Silva
- Centre of Biological Engineering (CEB), University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Helena P Felgueiras
- Centre for Textile Science and Technology (2C2T), University of Minho, Campus de Azurém, 4800-058 Guimarães, Portugal.
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2
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Chi M, Zhao J, Ke J, Liu Y, Wang R, Wang C, Hung SF, Lee TJ, Geng Z, Zeng J. Bipyridine-Confined Silver Single-Atom Catalysts Facilitate In-Plane C-O Coupling for Propylene Electrooxidation. NANO LETTERS 2024; 24:1801-1807. [PMID: 38277670 DOI: 10.1021/acs.nanolett.3c04978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2024]
Abstract
The electrooxidation of propylene presents a promising route for the production of 1,2-propylene glycol (PG) under ambient conditions. However, the C-O coupling process remains a challenge owing to the high energy barrier. In this work, we developed a highly efficient electrocatalyst of bipyridine-confined Ag single atoms on UiO-bpy substrates (Ag SAs/UiO-bpy), which exposed two in-plane coordination vacancies during reaction for the co-adsorption of key intermediates. Detailed structure and electronic property analyses demonstrate that CH3CHCH2OH* and *OH could stably co-adsorb in a square planar configuration, which then accelerates the charge transfer between them. The combination of stable co-adsorption and efficient charge transfer facilitates the C-O coupling process, thus significantly lowering its energy barrier. At 2.4 V versus a reversible hydrogen electrode, Ag SAs/UiO-bpy achieved a record-high activity of 61.9 gPG m-2 h-1. Our work not only presents a robust electrocatalyst but also advances a new perspective on catalyst design for propylene electrooxidation.
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Affiliation(s)
- Mingfang Chi
- Hefei National Research Center for Physical Sciences at the Microscale, CAS Key Laboratory of Strongly-Coupled Quantum Matter Physics, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Jiankang Zhao
- Hefei National Research Center for Physical Sciences at the Microscale, CAS Key Laboratory of Strongly-Coupled Quantum Matter Physics, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Jingwen Ke
- Hefei National Research Center for Physical Sciences at the Microscale, CAS Key Laboratory of Strongly-Coupled Quantum Matter Physics, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Yan Liu
- Hefei National Research Center for Physical Sciences at the Microscale, CAS Key Laboratory of Strongly-Coupled Quantum Matter Physics, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Ruyang Wang
- Hefei National Research Center for Physical Sciences at the Microscale, CAS Key Laboratory of Strongly-Coupled Quantum Matter Physics, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Chuanhao Wang
- Hefei National Research Center for Physical Sciences at the Microscale, CAS Key Laboratory of Strongly-Coupled Quantum Matter Physics, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Sung-Fu Hung
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu 300, Taiwan
| | - Tsung-Ju Lee
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu 300, Taiwan
| | - Zhigang Geng
- Hefei National Research Center for Physical Sciences at the Microscale, CAS Key Laboratory of Strongly-Coupled Quantum Matter Physics, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Jie Zeng
- Hefei National Research Center for Physical Sciences at the Microscale, CAS Key Laboratory of Strongly-Coupled Quantum Matter Physics, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
- School of Chemistry & Chemical Engineering, Anhui University of Technology, Ma'anshan, Anhui 243002, P. R. China
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Mitropoulou A, Markatos DN, Dimopoulos A, Marazioti A, Mikelis CM, Mavrilas D. Development and Evaluation of Biodegradable Core-Shell Microfibrous and Nanofibrous Scaffolds for Tissue Engineering Applications. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2024; 35:10. [PMID: 38285092 PMCID: PMC10824864 DOI: 10.1007/s10856-024-06777-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Accepted: 01/09/2024] [Indexed: 01/30/2024]
Abstract
Tissue engineering scaffolds as three-dimensional substrates may serve as ideal templates for tissue regeneration by simulating the structure of the extracellular matrix (ECM). Many biodegradable synthetic polymers, either hydrophobic, like Poly-ε-caprolactone (PCL), or hydrophilic, like Poly(Vinyl Alcohol) (PVA), are widely used as candidate bioactive materials for fabricating tissue engineering scaffolds. However, a combination of good cytocompatibility of hydrophilic polymers with good biomechanical performance of hydrophobic polymers could be beneficial for the in vivo performance of the scaffolds. In this study, we aimed to fabricate biodegradable fibrous scaffolds by combining the properties of hydrophobic PCL with those of hydrophilic PVA and evaluate their properties in comparison with pristine PCL scaffolds. Therefore, single-layered PCL scaffolds, sequential tri-layered (PVA/PCL/PVA), and core-shell (PVA as shell and PCL as core) composite scaffolds were developed utilizing the electrospinning technique. The material structural and biomechanical properties of the electrospun scaffolds, before and after their hydrolytic degradation over a seven-month period following storage in phosphate-buffered saline (PBS) at 37 °C, were comprehensively compared. In addition, human embryonic kidney cells (HEK-293) were cultured on the scaffolds to investigate potential cell attachment, infiltration, and proliferation. The results demonstrated the long-term efficacy of core-shell biodegradable fibrous scaffolds in comparison to single-layers PCL and tri-layers PVA/PCL/PVA, not only due to its superior morphological characteristics and mechanical properties, but also due to its ability to promote homogeneous cell distribution and proliferation, without any external chemical or physical stimuli.
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Affiliation(s)
- Athina Mitropoulou
- Department of Mechanical Engineering and Aeronautics, Laboratory of Biomechanics and Biomedical Engineering, University of Patras, Patras, GR, Greece.
| | - Dionysios N Markatos
- Department of Mechanical Engineering and Aeronautics, Laboratory of Technology and Strength of Materials, University of Patras, Patras, GR, Greece
| | - Andreas Dimopoulos
- Prometheus Division of Skeletal Tissue Engineering, KU Leuven, Leuven, Belgium
- Skeletal Biology and Engineering Research Center, Department of Development and Regeneration, KU Leuven, Leuven, Belgium
| | - Antonia Marazioti
- Department of Physiotherapy, Laboratory of Basic Sciences, University of Peloponnese, Sparta, GR, Greece
| | | | - Dimosthenis Mavrilas
- Department of Mechanical Engineering and Aeronautics, Laboratory of Biomechanics and Biomedical Engineering, University of Patras, Patras, GR, Greece
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Du Q, Sun J, Zhou Y, Yu Y, Kong W, Chen C, Zhou Y, Zhao K, Shao C, Gu X. Fabrication of ACP-CCS-PVA composite membrane for a potential application in guided bone regeneration. RSC Adv 2023; 13:25930-25938. [PMID: 37664206 PMCID: PMC10472212 DOI: 10.1039/d3ra04498j] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Accepted: 08/18/2023] [Indexed: 09/05/2023] Open
Abstract
The barrier membranes of guided bone regeneration (GBR) have been widely used in clinical medicine to repair bone defects. However, the unmatched mechanical strength, unsuitable degradation rates, and insufficient regeneration potential limit the application of the current barrier membranes. Here, amorphous calcium phosphate-carboxylated chitosan-polyvinyl alcohol (ACP-CCS-PVA) composite membranes are fabricated by freeze-thaw cycles, in which the ATP-stabilized ACP nanoparticles are uniformly distributed throughout the membranes. The mechanical performance and osteogenic properties are significantly improved by the ACP incorporated into the CCS-PVA system, but excess ACP would suppress cell proliferation and osteogenic differentiation. Our work highlights the pivotal role of ACP in GBR and provides insight into the need for biomaterial fabrication to balance mechanical strength and mineral content.
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Affiliation(s)
- Qiaolin Du
- Department of Stomatology, The First Affiliated Hospital, College of Medicine, Zhejiang University Hangzhou 310003 China
| | - Jian Sun
- Department of Stomatology, The First Affiliated Hospital, College of Medicine, Zhejiang University Hangzhou 310003 China
| | - Yanyan Zhou
- Stomatology Hospital, School of Stomatology, Clinical Research Center for Oral Diseases of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Zhejiang University School of Medicine Hangzhou 310006 China
| | - Yadong Yu
- Department of Chemistry, Zhejiang University Hangzhou Zhejiang 310027 China
| | - Weijing Kong
- Stomatology Hospital, School of Stomatology, Clinical Research Center for Oral Diseases of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Zhejiang University School of Medicine Hangzhou 310006 China
| | - Chaoqun Chen
- Department of Stomatology, The First Affiliated Hospital, College of Medicine, Zhejiang University Hangzhou 310003 China
| | - Yifeng Zhou
- Department of Stomatology, The First Affiliated Hospital, College of Medicine, Zhejiang University Hangzhou 310003 China
| | - Ke Zhao
- Department of Stomatology, The First Affiliated Hospital, College of Medicine, Zhejiang University Hangzhou 310003 China
| | - Changyu Shao
- Stomatology Hospital, School of Stomatology, Clinical Research Center for Oral Diseases of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Zhejiang University School of Medicine Hangzhou 310006 China
| | - Xinhua Gu
- Department of Stomatology, The First Affiliated Hospital, College of Medicine, Zhejiang University Hangzhou 310003 China
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Hashem MH, Wehbe M, Damacet P, El Habbal RK, Ghaddar N, Ghali K, Ahmad MN, Karam P, Hmadeh M. Electrospun Metal-Organic Framework-Fabric Nanocomposites as Efficient Bactericides. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023. [PMID: 37384737 DOI: 10.1021/acs.langmuir.3c01039] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/01/2023]
Abstract
In this work, we utilized electrospinning to develop advanced composite membranes of polyvinyl chloride (PVC) loaded with postmetalated metal-organic frameworks (MOFs), specifically UiO-66(COOH)2-Ag and ZIF-8-Ag. This innovative technique led to the creation of highly stable PVC/MOFs-Ag membrane composites, which were thoroughly characterized using various analytical techniques, including scanning electron microscopy, powder X-ray diffraction, thermogravimetric analysis, X-ray photoelectron spectroscopy, porosity analysis, and water contact angle measurement. The results verified the successful integration of MOF crystals within the nanofibrous PVC membranes. The obtained composites exhibited larger fiber diameters for 5 and 10% MOF loadings and a smaller diameter for 20% loading. Additionally, they displayed greater average pore sizes than traditional PVC membranes across most MOF loading percentages. Furthermore, we examined the antibacterial properties of the fabricated membranes at different MOFs-Ag loadings. The findings revealed that the membranes demonstrated significant antibacterial activity up to 95% against both Gram-negative (Escherichia coli) and Gram-positive (Staphylococcus aureus) bacteria as the MOFs-Ag loading increased, even when maintaining a constant silver concentration. This indicates a contact-based inhibition mechanism. The outcomes of this study have crucial implications for the development of novel, stable, and highly effective antibacterial materials, which could serve as superior alternatives for face masks and be integrated into materials requiring regular decontamination, as well as potential water filtration systems.
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Affiliation(s)
- Mohammad H Hashem
- Department of Mechanical Engineering, American University of Beirut, Beirut 1107 2020, Lebanon
| | - Mohamad Wehbe
- Chemistry Department, American University of Beirut, P.O. Box 11-0236, Riad El-Solh, 1107 2020 Beirut, Lebanon
| | - Patrick Damacet
- Chemistry Department, American University of Beirut, P.O. Box 11-0236, Riad El-Solh, 1107 2020 Beirut, Lebanon
| | - Rayan Kadah El Habbal
- Chemistry Department, American University of Beirut, P.O. Box 11-0236, Riad El-Solh, 1107 2020 Beirut, Lebanon
| | - Nesreen Ghaddar
- Department of Mechanical Engineering, American University of Beirut, Beirut 1107 2020, Lebanon
| | - Kamel Ghali
- Department of Mechanical Engineering, American University of Beirut, Beirut 1107 2020, Lebanon
| | - Mohammad N Ahmad
- Bahaa and Walid Bassatne Department of Chemical Engineering and Advanced Energy, Faculty of Engineering and Architecture, American University of Beirut, P.O. Box 11-0236, Beirut 1107 2020, Lebanon
| | - Pierre Karam
- Chemistry Department, American University of Beirut, P.O. Box 11-0236, Riad El-Solh, 1107 2020 Beirut, Lebanon
| | - Mohamad Hmadeh
- Chemistry Department, American University of Beirut, P.O. Box 11-0236, Riad El-Solh, 1107 2020 Beirut, Lebanon
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Phutane P, Telange D, Agrawal S, Gunde M, Kotkar K, Pethe A. Biofunctionalization and Applications of Polymeric Nanofibers in Tissue Engineering and Regenerative Medicine. Polymers (Basel) 2023; 15:polym15051202. [PMID: 36904443 PMCID: PMC10007057 DOI: 10.3390/polym15051202] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 02/07/2023] [Accepted: 02/09/2023] [Indexed: 03/06/2023] Open
Abstract
The limited ability of most human tissues to regenerate has necessitated the interventions namely autograft and allograft, both of which carry the limitations of its own. An alternative to such interventions could be the capability to regenerate the tissue in vivo.Regeneration of tissue using the innate capacity of the cells to regenerate is studied under the discipline of tissue engineering and regenerative medicine (TERM). Besides the cells and growth-controlling bioactives, scaffolds play the central role in TERM which is analogous to the role performed by extracellular matrix (ECM) in the vivo. Mimicking the structure of ECM at the nanoscale is one of the critical attributes demonstrated by nanofibers. This unique feature and its customizable structure to befit different types of tissues make nanofibers a competent candidate for tissue engineering. This review discusses broad range of natural and synthetic biodegradable polymers employed to construct nanofibers as well as biofunctionalization of polymers to improve cellular interaction and tissue integration. Amongst the diverse ways to fabricate nanofibers, electrospinning has been discussed in detail along with advances in this technique. Review also presents a discourse on application of nanofibers for a range of tissues, namely neural, vascular, cartilage, bone, dermal and cardiac.
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Affiliation(s)
- Prasanna Phutane
- Department of Pharmaceutics, Datta Meghe Institute of Higher Education and Research, Datta Meghe College of Pharmacy, Wardha 442004, MH, India
- Correspondence:
| | - Darshan Telange
- Department of Pharmaceutics, Datta Meghe Institute of Higher Education and Research, Datta Meghe College of Pharmacy, Wardha 442004, MH, India
| | - Surendra Agrawal
- Department of Pharmaceutical Chemistry, Datta Meghe Institute of Higher Education and Research, Datta Meghe College of Pharmacy, Wardha 442004, MH, India
| | - Mahendra Gunde
- Department of Pharmacognosy, Datta Meghe Institute of Higher Education and Research, Datta Meghe College of Pharmacy, Wardha 442004, MH, India
| | - Kunal Kotkar
- Department of Pharmaceutical Quality Assurance, R.C. Patel Institute of Pharmaceutical Education and Research, Shirpur 425405, MH, India
| | - Anil Pethe
- Department of Pharmaceutics, Datta Meghe Institute of Higher Education and Research, Datta Meghe College of Pharmacy, Wardha 442004, MH, India
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Xu Z, Wang T, Liu J. Recent Development of Polydopamine Anti-Bacterial Nanomaterials. Int J Mol Sci 2022; 23:ijms23137278. [PMID: 35806281 PMCID: PMC9266540 DOI: 10.3390/ijms23137278] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 06/24/2022] [Accepted: 06/27/2022] [Indexed: 02/01/2023] Open
Abstract
Polydopamine (PDA), as a mussel-inspired material, exhibits numerous favorable performance characteristics, such as a simple preparation process, prominent photothermal transfer efficiency, excellent biocompatibility, outstanding drug binding ability, and strong adhesive properties, showing great potential in the biomedical field. The rapid development of this field in the past few years has engendered substantial progress in PDA antibacterial materials. This review presents recent advances in PDA-based antimicrobial materials, including the preparation methods and antibacterial mechanisms of free-standing PDA materials and PDA-based composite materials. Furthermore, the urgent challenges and future research opportunities for PDA antibacterial materials are discussed.
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Affiliation(s)
- Zhengwei Xu
- Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China;
| | - Tingting Wang
- Department of Biomedical Engineering, College of Design and Engineering, National University of Singapore, Singapore 117583, Singapore
- Correspondence: (T.W.); (J.L.)
| | - Junqiu Liu
- Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China;
- Correspondence: (T.W.); (J.L.)
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9
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Rezaei I, Sadeghi A. Investigating the Mechanical Properties of Polyvinyl Alcohol Nanofibers Based on Aligned and Random Orientations. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2021. [DOI: 10.1007/s13369-021-06016-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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10
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Jadbabaei S, Kolahdoozan M, Naeimi F, Ebadi-Dehaghani H. Preparation and characterization of sodium alginate-PVA polymeric scaffolds by electrospinning method for skin tissue engineering applications. RSC Adv 2021; 11:30674-30688. [PMID: 35479869 PMCID: PMC9041156 DOI: 10.1039/d1ra04176b] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Accepted: 08/27/2021] [Indexed: 11/21/2022] Open
Abstract
Sodium alginate (SA) has proven its high potential in tissue engineering and regenerative medicine. One of the main weaknesses of this polysaccharide is its low spinnability. Nanofiber-based scaffolds are of interest to scientists for biomedical engineering. The main aim of this study was to improve the spinnability of SA in combination with polyvinyl alcohol (PVA). The main parameters in the electrospinning of the optimized SA:PVA ratio, including voltage, flow rate, and working space were also optimized. To achieve this, response surface methodology under central composite design was employed to design the experiments scientifically. The final nanofiber scaffolds were studied using scanning electron microscopy, Fourier transform infrared spectroscopy for degradability, swelling, tensile strength, porosity, nanofiber diameter, contact angle, and cytotoxicity. Based on the results, the best ratio for SA : PVA was 1 : 6.5 that was spinnable in various values for the process parameters. The fabricated scaffolds under these conditions revealed good physical, chemical, mechanical, and biological features. L929 cell lines revealed high viability during 48 h culture. The results revealed that uniform and homogeneous nanofibers with regular size distribution (166 nm) were obtained at 30 kV, 0.55 μL h-1, and 12.50 cm. To sum up, the fabricated scaffolds with the optimized ratio under the reported conditions indicate at good biologically compatible candidates for skin tissue engineering.
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Affiliation(s)
- Sorour Jadbabaei
- Department of Chemistry, Shahreza Branch, Islamic Azad University Shahreza Isfahan 31-86145 Iran
| | - Majid Kolahdoozan
- Department of Chemistry, Shahreza Branch, Islamic Azad University Shahreza Isfahan 31-86145 Iran
| | - Farid Naeimi
- Advanced Materials Research Center, Materials Engineering Department, Najafabad Branch, Islamic Azad University Najafabad Iran
| | - Hassan Ebadi-Dehaghani
- Department of Chemical Engineering, Shahreza Branch, Islamic Azad University Shahreza Isfahan 31-86145 Iran
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11
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Peer P, Janalikova M, Sedlarikova J, Pleva P, Filip P, Zelenkova J, Siskova AO. Antibacterial Filtration Membranes Based on PVDF- co-HFP Nanofibers with the Addition of Medium-Chain 1-Monoacylglycerols. ACS APPLIED MATERIALS & INTERFACES 2021; 13:41021-41033. [PMID: 34405995 DOI: 10.1021/acsami.1c07257] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The efficiency of filtration membranes is substantially lowered by bacterial attachments and potential fouling processes, which reduce their durability and lifecycle. The antibacterial and antifouling properties exhibited by the added materials play a substantial role in their application. We tested a material poly(vinylidene fluoride)-co-hexafluoropropylene (PDVF-co-HFP) based on an electrospun copolymer, where an agent was incorporated with a small amount of ester of glycerol consecutively with caprylic, capric, and lauric acids. Each of these three materials differing in the esters (1-monoacylglycerol, 1-MAG) used was prepared with three weighted concentrations of 1-MAG (1, 2, and 3 wt %). The presence of 1-MAG with an amphiphilic structure resulted in the hydrophilic character of the prepared materials that contributed to the filtration performance. The tested materials (membranes) were characterized with rheological, optical (scanning electron microscopy, SEM), Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), and other methods to evaluate antibacterial and antifouling activities. The pure water flux was 6 times higher than that of the neat PVDF-co-HFP membrane when the added 1-MAG attained only 1 wt %. It was experimentally shown that the PVDF-co-HFP/1-MAG membrane with high wettability improved antibacterial activity and antifouling ability. This membrane is highly promising for water treatment due to the safety of antibacterial 1-MAG additives.
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Affiliation(s)
- Petra Peer
- Institute of Hydrodynamics of the Czech Academy of Sciences, v. v. i., Pod Patankou 5, 166 12 Prague 6, Czech Republic
| | - Magda Janalikova
- Department of Environmental Protection Engineering, Faculty of Technology, Tomas Bata University in Zlin, Vavreckova 275, 760 01 Zlin, Czech Republic
| | - Jana Sedlarikova
- Department of Fat, Surfactant and Cosmetics Technology, Faculty of Technology, Tomas Bata University in Zlin, Vavreckova 275, 760 01 Zlin, Czech Republic
| | - Pavel Pleva
- Department of Environmental Protection Engineering, Faculty of Technology, Tomas Bata University in Zlin, Vavreckova 275, 760 01 Zlin, Czech Republic
| | - Petr Filip
- Institute of Hydrodynamics of the Czech Academy of Sciences, v. v. i., Pod Patankou 5, 166 12 Prague 6, Czech Republic
| | - Jana Zelenkova
- Institute of Hydrodynamics of the Czech Academy of Sciences, v. v. i., Pod Patankou 5, 166 12 Prague 6, Czech Republic
| | - Alena Opalkova Siskova
- Polymer Institute, Slovak Academy of Sciences, Dubravska cesta 9, 845 41 Bratislava, Slovakia
- Institute of Materials and Machine Mechanics, Slovak Academy of Sciences, Dubravska cesta 9, 845 13 Bratislava, Slovakia
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12
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Liao T, Wu J, Tang Z, Su Q, Huang Z, Gu Y, Li Y, Xie J, Lin X, Yi G. Construction of sacrificial network in styrene-ethylene/butadiene-styrene triblock copolymer composites and their mechanical behaviors. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2021. [DOI: 10.1080/10601325.2021.1967170] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Tingting Liao
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, China
| | - Jianyu Wu
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, China
| | - Zilun Tang
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, China
| | - Qiuping Su
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, China
| | - Zhiyi Huang
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, China
| | - Yuxin Gu
- Kinte Material Technology Co., Ltd, Dongguan, China
| | - Yong Li
- Kinte Material Technology Co., Ltd, Dongguan, China
| | - Jing Xie
- Kinte Material Technology Co., Ltd, Dongguan, China
| | - Xiaofeng Lin
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, China
| | - Guobin Yi
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, China
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Eugenol-Containing Essential Oils Loaded onto Chitosan/Polyvinyl Alcohol Blended Films and Their Ability to Eradicate Staphylococcus aureus or Pseudomonas aeruginosa from Infected Microenvironments. Pharmaceutics 2021; 13:pharmaceutics13020195. [PMID: 33540524 PMCID: PMC7912801 DOI: 10.3390/pharmaceutics13020195] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 01/21/2021] [Accepted: 01/25/2021] [Indexed: 12/27/2022] Open
Abstract
Chronic wounds (CW) create numerous entryways for pathogen invasion and prosperity, further damaging host tissue and hindering its remodeling and repair. Essential oils (EOs) exert quick and efficient antimicrobial (AM) action, unlikely to induce bacterial resistance. Cinnamon leaf and clove oils (CLO and CO) display strong AM activity, namely against Staphylococcus aureus and Pseudomonas aeruginosa. Chitosan (CS) is a natural and biodegradable cationic polysaccharide, also widely known for its AM features. CS and poly (vinyl alcohol) (PVA) films were prepared (ratio 30/70 w/w; 9 wt%) by the solvent casting and phase inversion method. The film's thermal stability and chemical composition data reinforced polymer blending and EO entrapment. Films were supplemented with 1 and 10 wt% of EO in relation to total polymeric mass. The film thickness and degree of swelling (DS) tended to increase with EO content, particularly with 10 wt % CLO (* p < 0.05). UV-visible absorbance scans in the 250-320 cm-1 region confirmed the successful uptake of CLO and CO into CS/PVA films, particularly with films loaded with 10 wt% EO that contained 5.30/5.32 times more CLO/CO than films supplemented with 1 wt% EO. AM testing revealed that CS films alone were effective against both bacteria and capable of eradicating all P. aeruginosa within the hour (*** p < 0.001). Still, loaded CS/PVA films showed significantly improved AM traits in relation to unloaded films within 2 h of contact. This study is a first proof of concept that CLO and CO can be dispersed into CS/PVA films and show bactericidal effects, particularly against S. aureus, this way paving the way for efficient CW therapeutics.
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Physical, Thermal, and Antibacterial Effects of Active Essential Oils with Potential for Biomedical Applications Loaded onto Cellulose Acetate/Polycaprolactone Wet-Spun Microfibers. Biomolecules 2020; 10:biom10081129. [PMID: 32751893 PMCID: PMC7465996 DOI: 10.3390/biom10081129] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 07/20/2020] [Accepted: 07/30/2020] [Indexed: 12/14/2022] Open
Abstract
New approaches to deal with the growing concern associated with antibiotic-resistant bacteria are emerging daily. Essential oils (EOs) are natural antimicrobial substances with great potential to mitigate this situation. However, their volatile nature, in their liquid-free form, has restricted their generalized application in biomedicine. Here, we propose the use of cellulose acetate (CA)/polycaprolactone (PCL) wet-spun fibers as potential delivery platforms of selected EOs to fight infections caused by Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli). Twenty EOs were selected and screened for their minimal inhibitory concentration (MIC), using the antibiotic ampicillin as positive control. The cinnamon leaf oil (CLO), cajeput oil (CJO), and the clove oil (CO) were the most effective EOs, against the Gram-positive (MIC < 22.38 mg/mL) and the Gram-negative (MIC < 11.19 mg/mL) bacteria. Uniform microfibers were successfully wet-spun from CA/PCL with an averaged diameter of 53.9 ± 4.5 µm, and then modified by immersion with CLO, CJO and CO at 2 × MIC value. EOs incorporation was confirmed by UV-visible spectroscopy, Fourier-transformed infrared spectroscopy, and thermal gravimetric analysis. However, while microfibers contained ampicillin at MIC (control) after the 72 h modification, the CLO, CO and CJO-loaded fibers registered ≈ 14%, 66%, and 76% of their MIC value, respectively. Data showed that even at small amounts the EO-modified microfibers were effective against the tested bacteria, both by killing bacteria more quickly or by disrupting more easily their cytoplasmic membrane than ampicillin. Considering the amount immobilized, CLO-modified fibers were deemed the most effective from the EOs group. These results indicate that CA/PCL microfibers loaded with EOs can be easily produced with increased antibacterial action, envisioning their use as scaffolding materials for the treatment of infections.
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Tavares TD, Antunes JC, Padrão J, Ribeiro AI, Zille A, Amorim MTP, Ferreira F, Felgueiras HP. Activity of Specialized Biomolecules against Gram-Positive and Gram-Negative Bacteria. Antibiotics (Basel) 2020; 9:E314. [PMID: 32526972 PMCID: PMC7344598 DOI: 10.3390/antibiotics9060314] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 06/01/2020] [Accepted: 06/08/2020] [Indexed: 11/24/2022] Open
Abstract
The increased resistance of bacteria against conventional pharmaceutical solutions, the antibiotics, has raised serious health concerns. This has stimulated interest in the development of bio-based therapeutics with limited resistance, namely, essential oils (EOs) or antimicrobial peptides (AMPs). This study envisaged the evaluation of the antimicrobial efficacy of selected biomolecules, namely LL37, pexiganan, tea tree oil (TTO), cinnamon leaf oil (CLO) and niaouli oil (NO), against four bacteria commonly associated to nosocomial infections: Staphylococcus aureus, Staphylococcus epidermidis, Escherichia coli and Pseudomonas aeruginosa. The antibiotic vancomycin and silver nanoparticles (AgNPs) were used as control compounds for comparison purposes. The biomolecules were initially screened for their antibacterial efficacy using the agar-diffusion test, followed by the determination of minimal inhibitory concentrations (MICs), kill-time kinetics and the evaluation of the cell morphology upon 24 h exposure. All agents were effective against the selected bacteria. Interestingly, the AgNPs required a higher concentration (4000-1250 µg/mL) to induce the same effects as the AMPs (500-7.8 µg/mL) or EOs (365.2-19.7 µg/mL). Pexiganan and CLO were the most effective biomolecules, requiring lower concentrations to kill both Gram-positive and Gram-negative bacteria (62.5-7.8 µg/mL and 39.3-19.7 µg/mL, respectively), within a short period of time (averaging 2 h 15 min for all bacteria). Most biomolecules apparently disrupted the bacteria membrane stability due to the observed cell morphology deformation and by effecting on the intracellular space. AMPs were observed to induce morphological deformations and cellular content release, while EOs were seen to split and completely envelope bacteria. Data unraveled more of the potential of these new biomolecules as replacements for the conventional antibiotics and allowed us to take a step forward in the understanding of their mechanisms of action against infection-related bacteria.
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Affiliation(s)
| | | | | | | | | | | | | | - Helena P. Felgueiras
- Centre for Textile Science and Technology (2C2T), Department of Textile Engineering, University of Minho, Campus of Azurém, 4800-058 Guimarães, Portugal; (T.D.T.); (J.C.A.); (J.P.); (A.I.R.); (A.Z.); (M.T.P.A.); (F.F.)
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Zhang T, Gu J, Liu X, Wei D, Zhou H, Xiao H, Zhang Z, Yu H, Chen S. Bactericidal and antifouling electrospun PVA nanofibers modified with a quaternary ammonium salt and zwitterionic sulfopropylbetaine. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 111:110855. [PMID: 32279770 DOI: 10.1016/j.msec.2020.110855] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 02/21/2020] [Accepted: 03/14/2020] [Indexed: 02/02/2023]
Abstract
Bacterial adhesion and colonization on material surfaces have attracted great attention due to their potential threat to human health. Combining bactericidal and antifouling functions has been confirmed as an optimal strategy to prevent microbial infection. In this work, biodegradable electrospun polyvinyl alcohol (PVA) nanofibers were chosen due to its high specific area and abundant reactive hydroxyl groups. A quaternary ammonium salt (IQAS) and zwitterionic sulfopropylbetaine (ISB), both containing isocyanate (NCO) groups, were chemically bonded to the PVA nanofiber surface via a coupling reaction between the OH groups of the PVA nanofibers and the NCO groups of IQAS or ISB. The results indicated that the antimicrobial rates of PVA nanofibers modified by IQAS (0.5%) reached 99.9% against both gram-positive Staphylococcus aureus (S. aureus, ATCC 6538) and gram-negative Escherichia coli (E. coli, ATCC 25922). Additionally, the live/dead staining and cytotoxicity test indicated that the dual functional IQAS/ISB/PVA nanofibers exhibited excellent bactericidal and antifouling activities with low cytotoxicity. This work may provide practical guidelines to fabricate bactericidal and antifouling materials for healthcare applications, including but not limited to wound dressings, textile, food packaging and air filtration.
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Affiliation(s)
- Teng Zhang
- Nanshan District Key Lab for Biopolymers and Safety Evaluation, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, PR China
| | - Jingwei Gu
- Nanshan District Key Lab for Biopolymers and Safety Evaluation, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, PR China
| | - Xiangyu Liu
- Nanshan District Key Lab for Biopolymers and Safety Evaluation, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, PR China
| | - Dengshuai Wei
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Huiling Zhou
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Haihua Xiao
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Zhuocheng Zhang
- Nanshan District Key Lab for Biopolymers and Safety Evaluation, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, PR China
| | - Huali Yu
- Nanshan District Key Lab for Biopolymers and Safety Evaluation, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, PR China
| | - Shiguo Chen
- Nanshan District Key Lab for Biopolymers and Safety Evaluation, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, PR China.
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Felgueiras HP, Teixeira MA, Tavares TD, Amorim MTP. New method to produce poly(vinyl alcohol)/cellulose acetate films with improved antibacterial action. ACTA ACUST UNITED AC 2020. [DOI: 10.1016/j.matpr.2019.12.100] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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18
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Teixeira MA, Amorim MTP, Felgueiras HP. Poly(Vinyl Alcohol)-Based Nanofibrous Electrospun Scaffolds for Tissue Engineering Applications. Polymers (Basel) 2019; 12:polym12010007. [PMID: 31861485 PMCID: PMC7023576 DOI: 10.3390/polym12010007] [Citation(s) in RCA: 82] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 11/21/2019] [Accepted: 12/12/2019] [Indexed: 01/27/2023] Open
Abstract
Tissue engineering (TE) holds an enormous potential to develop functional scaffolds resembling the structural organization of native tissues, to improve or replace biological functions and prevent organ transplantation. Amongst the many scaffolding techniques, electrospinning has gained widespread interest because of its outstanding features that enable the production of non-woven fibrous structures with a dimensional organization similar to the extracellular matrix. Various polymers can be electrospun in the form of three-dimensional scaffolds. However, very few are successfully processed using environmentally friendly solvents; poly(vinyl alcohol) (PVA) is one of those. PVA has been investigated for TE scaffolding production due to its excellent biocompatibility, biodegradability, chemo-thermal stability, mechanical performance and, most importantly, because of its ability to be dissolved in aqueous solutions. Here, a complete overview of the applications and recent advances in PVA-based electrospun nanofibrous scaffolds fabrication is provided. The most important achievements in bone, cartilage, skin, vascular, neural and corneal biomedicine, using PVA as a base substrate, are highlighted. Additionally, general concepts concerning the electrospinning technique, the stability of PVA when processed, and crosslinking alternatives to glutaraldehyde are as well reviewed.
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Ahmadi N, Kharaziha M, Labbaf S. Core-shell fibrous membranes of PVDF-Ba 0.9Ca 0.1TiO 3/PVA with osteogenic and piezoelectric properties for bone regeneration. ACTA ACUST UNITED AC 2019; 15:015007. [PMID: 31694002 DOI: 10.1088/1748-605x/ab5509] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The goal of this research was to promote the bioactivity and osteogenic characteristics of polyvinylidene fluoride(PVDF) fibrous membrane, while preserving its piezoelectric property for bone regeneration. In this regard, core-shell fibrous membrane of PVDF-Ba0.9Ca0.1TiO3/polyvinyl alcohol(PVA) was developed via emulsion electrospinning approach. While PVA was in the outer layer of fibers with thickness of 53 ± 18 nm, the Ba0.9Ca0.1TiO3 nanoparticles was uniformly dispersed in the PVDF core. The formation of PVA shell resulted in significant improvement of its hydrophilicity (3 times) and degradation rate, while piezoelectricity did noticeably modulate. In addition, incorporation of Ba0.9Ca0.1TiO3 nanopowder remarkably improved bioactivity, protein adsorption and mechanical properties of PVDF/PVA fibrous membranes. Finally, the osteogenic differentiation of mesenchymal stem cells on the nanocomposite fibrous membranes, in the absence of osteogenic supplements, was also observed. Overall, the results confirmed the promising potential of PVDF-Ba0.9Ca0.1TiO3/PVA fibrous membrane containing 1-2 wt% nanopowder for bone regeneration.
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Affiliation(s)
- Narges Ahmadi
- Department of Materials Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran
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20
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Zhang Q, Wang Y, Zhang W, Hickey ME, Lin Z, Tu Q, Wang J. In situ assembly of well-dispersed Ag nanoparticles on the surface of polylactic acid-Au@polydopamine nanofibers for antimicrobial applications. Colloids Surf B Biointerfaces 2019; 184:110506. [DOI: 10.1016/j.colsurfb.2019.110506] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 08/26/2019] [Accepted: 09/11/2019] [Indexed: 01/17/2023]
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21
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Travnickova E, Mikula P, Oprsal J, Bohacova M, Kubac L, Kimmer D, Soukupova J, Bittner M. Resazurin assay for assessment of antimicrobial properties of electrospun nanofiber filtration membranes. AMB Express 2019; 9:183. [PMID: 31720875 PMCID: PMC6854189 DOI: 10.1186/s13568-019-0909-z] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Accepted: 10/31/2019] [Indexed: 12/20/2022] Open
Abstract
We developed a simple and fast microplate assay for evaluation of the antimicrobial activity of electrospun nanofiber filtration membranes or similar porous materials for water treatment technologies. Resazurin (alamarBlue®) was used as an indicator of the amount of viable experimental microorganisms Gram-negative Escherichia coli, Gram-positive Enterococcus faecalis, and natural wastewater treatment plant effluent bacteria. A bacterial inoculum of concentration 1-3 × 105 CFU mL-1 was pipetted onto the surface of assessed both functionalized and respective control membranes and incubated in 12-well plates for 4 h at 37 °C. Kinetics of resazurin metabolization, i.e. its reduction to fluorescent resorufin, was evaluated fluorimetrically (λex520/λem590 nm). A number of viable bacteria on the membranes expressed as CFU mL-1 was calculated from the kinetic curves by using calibration curves that were constructed for both experimental bacterial species. Antimicrobial activities of the membranes were evaluated by either resazurin assay or modified ISO 20743 plate count assay. Results of both assays showed the significant antimicrobial activity of membranes functionalized with silver nanoparticles for both bacterial species and wastewater treatment plant effluent bacteria as well (log CFU reduction compared to control membrane > 4), while membranes containing specific quaternary ammonium salts were inefficient (log CFU reduction < 1). The suitability of resazurin microplate assay for testing nanofiber filtration membranes and analogous matrices has proven to be a faster and less demanding alternative to the traditionally used approach providing comparable results.
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Affiliation(s)
- Eva Travnickova
- RECETOX Centre, Faculty of Science, Masaryk University, Kamenice 5, 625 00, Brno, Czechia
| | - Premysl Mikula
- RECETOX Centre, Faculty of Science, Masaryk University, Kamenice 5, 625 00, Brno, Czechia
- Department of Veterinary Public Health and Forensic Medicine, University of Veterinary and Pharmaceutical Sciences Brno, Palackeho 1946/1, 612 42, Brno, Czechia
| | - Jakub Oprsal
- SYNPO a. s., Pardubice, S. K. Neumanna 1316, 532 07, Pardubice, Czechia
| | - Marie Bohacova
- SYNPO a. s., Pardubice, S. K. Neumanna 1316, 532 07, Pardubice, Czechia
| | - Lubomir Kubac
- Centre for Organic Chemistry Ltd., Rybitvi 296, 533 54, Rybitvi, Czechia
| | - Dusan Kimmer
- Centre of Polymer Systems, University Institute, Tomas Bata University, Trida Tomase Bati 5678, 760 01, Zlin, Czechia
| | - Jana Soukupova
- Regional Center of Advanced Technologies and Materials, Department of Physical Chemistry, Palacky University, Slechtitelu 27, 783 71, Olomouc, Czechia
| | - Michal Bittner
- RECETOX Centre, Faculty of Science, Masaryk University, Kamenice 5, 625 00, Brno, Czechia.
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22
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Felgueiras HP, Teixeira MA, Tavares TD, Homem NC, Zille A, Amorim MTP. Antimicrobial action and clotting time of thin, hydrated poly(vinyl alcohol)/cellulose acetate films functionalized with LL37 for prospective wound‐healing applications. J Appl Polym Sci 2019. [DOI: 10.1002/app.48626] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Helena P. Felgueiras
- Centre for Textile Science and Technology (2C2T), Department of Textile EngineeringUniversity of Minho Campus de Azurém P.O. Box 4800‐058 Guimarães Portugal
| | - Marta A. Teixeira
- Centre for Textile Science and Technology (2C2T), Department of Textile EngineeringUniversity of Minho Campus de Azurém P.O. Box 4800‐058 Guimarães Portugal
| | - Tânia D. Tavares
- Centre for Textile Science and Technology (2C2T), Department of Textile EngineeringUniversity of Minho Campus de Azurém P.O. Box 4800‐058 Guimarães Portugal
| | - Natália C. Homem
- Centre for Textile Science and Technology (2C2T), Department of Textile EngineeringUniversity of Minho Campus de Azurém P.O. Box 4800‐058 Guimarães Portugal
| | - Andrea Zille
- Centre for Textile Science and Technology (2C2T), Department of Textile EngineeringUniversity of Minho Campus de Azurém P.O. Box 4800‐058 Guimarães Portugal
| | - M. Teresa P. Amorim
- Centre for Textile Science and Technology (2C2T), Department of Textile EngineeringUniversity of Minho Campus de Azurém P.O. Box 4800‐058 Guimarães Portugal
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23
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Silva IO, Ladchumananandasivam R, Nascimento JHO, Silva KKOS, Oliveira FR, Souto AP, Felgueiras HP, Zille A. Multifunctional Chitosan/Gold Nanoparticles Coatings for Biomedical Textiles. NANOMATERIALS 2019; 9:nano9081064. [PMID: 31344942 PMCID: PMC6723569 DOI: 10.3390/nano9081064] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 07/17/2019] [Accepted: 07/21/2019] [Indexed: 11/16/2022]
Abstract
Gold nanoparticles (AuNPs), chemically synthesized by citrate reduction, were for the first time immobilized onto chitosan-treated soybean knitted fabric via exhaustion method. AuNPs were successfully produced in the form of highly spherical, moderated polydisperse, stable structures. Their average size was estimated at ≈35 nm. Successful immobilization of chitosan and AuNPs were confirmed by alterations in the fabric's spectrophotometric reflectance spectrum and by detection of nitrogen and gold, non-conjugated C=O stretching vibrations of carbonyl functional groups and residual N-acetyl groups characteristic bands by X-ray photoelectron spectroscopy (XPS) and Fourier-Transform Infrared Spectroscopy (FTIR) analysis. XPS analysis confirms the strong binding of AuNPs on the chitosan matrix. The fabrics' thermal stability increased with the introduction of both chitosan and AuNPs. Coated fabrics revealed an ultraviolet protection factor (UPF) of +50, which established their effectiveness in ultraviolet (UV) radiation shielding. They were also found to resist up to 5 washing cycles with low loss of immobilized AuNPs. Compared with AuNPs or chitosan alone, the combined functionalized coating on soy fabrics demonstrated an improved antimicrobial effect by reducing Staphylococcus aureus adhesion (99.94%) and Escherichia coli (96.26%). Overall, the engineered fabrics were confirmed as multifunctional, displaying attractive optical properties, UV-light protection and important antimicrobial features, that increase their interest for potential biomedical applications.
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Affiliation(s)
- Iris O Silva
- Department of Mechanical Engineering, Federal University of Rio Grande do Norte, Natal 59064-741, Brazil
| | | | | | - Késia Karina O S Silva
- Department of Textile Engineering, Federal University of Rio Grande do Norte, Natal 59064-741, Brazil
| | - Fernando R Oliveira
- Department of Textile Engineering, Federal University of Santa Catarina (UFSC), Campus Blumenau, Blumenau 89036-002, Brazil
| | - António P Souto
- Centre for Textile Science and Technology, Department of Textile Engineering, University of Minho, Guimarães 4800-058, Portugal
| | - Helena P Felgueiras
- Centre for Textile Science and Technology, Department of Textile Engineering, University of Minho, Guimarães 4800-058, Portugal
| | - Andrea Zille
- Centre for Textile Science and Technology, Department of Textile Engineering, University of Minho, Guimarães 4800-058, Portugal.
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Celebioglu A, Topuz F, Yildiz ZI, Uyar T. Efficient Removal of Polycyclic Aromatic Hydrocarbons and Heavy Metals from Water by Electrospun Nanofibrous Polycyclodextrin Membranes. ACS OMEGA 2019; 4:7850-7860. [PMID: 31459873 PMCID: PMC6648243 DOI: 10.1021/acsomega.9b00279] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Accepted: 04/17/2019] [Indexed: 05/16/2023]
Abstract
Here, a highly efficient membrane based on electrospun polycyclodextrin (poly-CD) nanofibers was prepared and exploited for the scavenging of various polycyclic aromatic hydrocarbons (PAHs) and heavy metals from water. The poly-CD nanofibers were produced by the electrospinning of CD molecules in the presence of a cross-linker (i.e., 1,2,3,4-butanetetracarboxylic acid), followed by heat treatment to obtain an insoluble poly-CD nanofibrous membrane. The membrane was used for the removal of several PAH compounds (i.e., acenaphthene, fluorene, fluoranthene, phenanthrene, and pyrene) and heavy metals (i.e., Pb2+, Ni2+, Mn2+, Cd2+, Zn2+, and Cu2+) from water over time. Experiments were made on the batch sorption of PAHs and heavy metals from contaminated water to explore the binding affinity of PAHs and heavy metals to the poly-CD membrane. The equilibrium sorption capacity (q e) of the poly-CD nanofibrous membrane was found to be 0.43 ± 0.045 mg/g for PAHs and 4.54 ± 0.063 mg/g for heavy metals, and the sorption kinetics fitted well with the pseudo-second-order model for both types of pollutants. The membrane could be recycled after treatment with acetonitrile or a 2% nitric acid solution and reused up to four times with similar performance. Further, dead-end filtration experiments showed that the PAH removal efficiencies were as high as 92.6 ± 1.6 and 89.9 ± 4.8% in 40 s for the solutions of 400 and 600 μg/L PAHs, respectively. On the other hand, the removal efficiencies for heavy metals during the filtration were 94.3 ± 5.3 and 72.4 ± 23.4% for 10 and 50 mg/L solutions, respectively, suggesting rapid and efficient filtration of heavy metals and PAHs by the nanofibrous poly-CD membrane.
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Affiliation(s)
- Asli Celebioglu
- Institute of Materials
Science & Nanotechnology, Bilkent University, Ankara 06800, Turkey
| | - Fuat Topuz
- Institute of Materials
Science & Nanotechnology, Bilkent University, Ankara 06800, Turkey
| | - Zehra Irem Yildiz
- Institute of Materials
Science & Nanotechnology, Bilkent University, Ankara 06800, Turkey
| | - Tamer Uyar
- Institute of Materials
Science & Nanotechnology, Bilkent University, Ankara 06800, Turkey
- Department of Fiber Science & Apparel
Design, College of Human Ecology, Cornell
University, Ithaca, New York 14853, United
States
- E-mail:
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25
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Zhang Q, Tu Q, Hickey ME, Xiao J, Gao B, Tian C, Heng P, Jiao Y, Peng T, Wang J. Preparation and study of the antibacterial ability of graphene oxide-catechol hybrid polylactic acid nanofiber mats. Colloids Surf B Biointerfaces 2018; 172:496-505. [PMID: 30205340 DOI: 10.1016/j.colsurfb.2018.09.003] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 08/06/2018] [Accepted: 09/01/2018] [Indexed: 12/30/2022]
Abstract
The functionalization of electrospun mats with antimicrobial nanomaterials is an attractive strategy when developing functional graphene oxide coating materials to prevent bacterial colonization on surfaces. In this study, we demonstrated a simple approach to produce antimicrobial electrospun mats by dip-coating a polylactic acid (PLA) nanofiber into a graphene oxide-catechol derivative. PLA was first electrospun to yield narrow-diameter polymeric nanofibers. We then modified the graphene oxide (GO) with a catechol derivative - dopamine methacrylamide monomer (DMA) - to synthesize a GO-DMA nanocomposite material which exhibited robust antimicrobial properties. The catechol groups promote the immobilization of graphene oxide onto the PLA nanofibers and possess strong antimicrobial properties. We therefore selected this functional group to modify GO. We dipped the GO-DMA onto the PLA nanofiber to produce the final functionalized electrospun mats. The PLA mats which were functionalized using the GO-DMA nanocomposite (PLA-GO-DMA) displayed antibacterial activity against both Gram-negative (Escherichia coli) and Gram-positive (Staphylococcus aureus) bacteria. Furthermore, we studied the biocompatibility of the mats by culturing the cell lines (HepG2, A549, and HUVEC-C) of PLA-GO-DMA among the nanofibers which exhibited excellent biocompatibility. These results collectively demonstrate the potential of PLA-GO-DMA nanofiber mats as antimicrobial biomaterials and provide fundamental information toward the establishment of future biomedical applications.
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Affiliation(s)
- Qingmiao Zhang
- College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Qin Tu
- College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi, 712100, PR China; Department of Food Science, University of Massachusetts, Amherst, MA, USA.
| | - Michael E Hickey
- Department of Food Science, University of Massachusetts, Amherst, MA, USA
| | - Jingcheng Xiao
- College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Bo Gao
- College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Chang Tian
- College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Peng Heng
- College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Ying Jiao
- College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Tangqiong Peng
- College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Jinyi Wang
- College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi, 712100, PR China.
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Yadav RK, Kumar A, Yadav D, Park NJ, Kim JY, Baeg JO. In Situ Prepared Flexible 3D Polymer Film Photocatalyst for Highly Selective Solar Fuel Production from CO2. ChemCatChem 2018. [DOI: 10.1002/cctc.201701730] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Rajesh K. Yadav
- Artificial Photosynthesis Research Group; Korea Research Institute of Chemical Technology (KRICT); 100 Jang-dong Yuseong Daejeon 305 600 Republic of Korea
| | - Abhishek Kumar
- Artificial Photosynthesis Research Group; Korea Research Institute of Chemical Technology (KRICT); 100 Jang-dong Yuseong Daejeon 305 600 Republic of Korea
| | - Dolly Yadav
- Artificial Photosynthesis Research Group; Korea Research Institute of Chemical Technology (KRICT); 100 Jang-dong Yuseong Daejeon 305 600 Republic of Korea
| | - No-Joong Park
- Artificial Photosynthesis Research Group; Korea Research Institute of Chemical Technology (KRICT); 100 Jang-dong Yuseong Daejeon 305 600 Republic of Korea
| | - Jae Young Kim
- Artificial Photosynthesis Research Group; Korea Research Institute of Chemical Technology (KRICT); 100 Jang-dong Yuseong Daejeon 305 600 Republic of Korea
| | - Jin-Ook Baeg
- Artificial Photosynthesis Research Group; Korea Research Institute of Chemical Technology (KRICT); 100 Jang-dong Yuseong Daejeon 305 600 Republic of Korea
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Etaiw SEH, Abd El-Aziz DM, Abdou SN. Single Crystal of New Nanostructure Self-Assembled Copper–Cyanide and Hexamethylenetetramine as an Efficient Supramolecular Coordination Polymer Catalyst. J Inorg Organomet Polym Mater 2017. [DOI: 10.1007/s10904-017-0749-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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