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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] [MESH Headings] [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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Ribeiro ARM, Miranda CS, Silva AFG, Mendes FDP, Silva BM, Oliveira BAS, Paiva ED, Gonçalves SP, Pereira-Lima SMMA, Costa SPG, Felgueiras HP. Inhibition of Enzyme and Bacteria Activities in Diabetic Ulcer-like Scenarios via WAAPV-Loaded Electrospun Fibers. Pharmaceutics 2024; 16:911. [PMID: 39065608 PMCID: PMC11280037 DOI: 10.3390/pharmaceutics16070911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2024] [Revised: 07/01/2024] [Accepted: 07/04/2024] [Indexed: 07/28/2024] Open
Abstract
In diabetic ulcers, an increased secretion of human neutrophil elastase (HNE) and bacterial infections play crucial roles in hindering healing. Considering that, the present study proposed the development of multi-action polycaprolactone (PCL)/polyethylene glycol (PEG) electrospun fibers incorporating elastase-targeting peptides, AAPV and WAAPV, via blending. Characterization confirmed WAAPV's efficacy in regulating proteolytic enzymes by inhibiting HNE. The engineered fibers, particularly those containing PEG, exhibited optimal wettability but an accelerated degradation that was mitigated with the peptide's inclusion, thus promoting a sustained peptide release over 24 h. Peptide loading was verified indirectly through thermal stability and hydration capacity studies (hydrophobic bonding between PCL and WAAPV and hydrophilic affinities between PCL/PEG and AAPV) and determined at ≈51.1 µg/cm2 and ≈46.0 µg/cm2 for AAPV and ≈48.5 µg/cm2 and ≈51.3 µg/cm2 for WAAPV, respectively, for PCL and PCL/PEG. Both AAPV and WAAPV effectively inhibited HNE, with PEG potentially enhancing this effect by interacting with the peptides and generating detectable peptide-PEG complexes (≈10% inhibition with PCL + peptide fibers after 6 h of incubation, and ≈20% with PCL/PEG + peptide fibers after 4 h incubation). Peptide-loaded fibers demonstrated antibacterial efficacy against Staphylococcus aureus (up to ≈78% inhibition) and Escherichia coli (up to ≈66% inhibition), with peak effectiveness observed after 4 and 2 h of incubation, respectively. This study provides initial insights into the WAAPV's potential for inhibiting HNE and bacteria activities, showing promise for applications in diabetic ulcer management.
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Affiliation(s)
- Ana R. M. Ribeiro
- Centre for Textile Science and Technology (2C2T), University of Minho, Campus of Azurém, 4800-058 Guimarães, Portugal; (A.R.M.R.); (C.S.M.); (B.M.S.); (B.A.S.O.); (E.D.P.); (S.P.G.)
| | - Catarina S. Miranda
- Centre for Textile Science and Technology (2C2T), University of Minho, Campus of Azurém, 4800-058 Guimarães, Portugal; (A.R.M.R.); (C.S.M.); (B.M.S.); (B.A.S.O.); (E.D.P.); (S.P.G.)
| | - Ana Francisca G. Silva
- Centre of Chemistry (CQ), University of Minho, Campus of Gualtar, 4710-057 Braga, Portugal; (A.F.G.S.); (S.M.M.A.P.-L.); (S.P.G.C.)
| | - Filipa D. P. Mendes
- Centre of Chemistry (CQ), University of Minho, Campus of Gualtar, 4710-057 Braga, Portugal; (A.F.G.S.); (S.M.M.A.P.-L.); (S.P.G.C.)
| | - Beatriz M. Silva
- Centre for Textile Science and Technology (2C2T), University of Minho, Campus of Azurém, 4800-058 Guimarães, Portugal; (A.R.M.R.); (C.S.M.); (B.M.S.); (B.A.S.O.); (E.D.P.); (S.P.G.)
| | - Bruna A. S. Oliveira
- Centre for Textile Science and Technology (2C2T), University of Minho, Campus of Azurém, 4800-058 Guimarães, Portugal; (A.R.M.R.); (C.S.M.); (B.M.S.); (B.A.S.O.); (E.D.P.); (S.P.G.)
| | - Eduardo D. Paiva
- Centre for Textile Science and Technology (2C2T), University of Minho, Campus of Azurém, 4800-058 Guimarães, Portugal; (A.R.M.R.); (C.S.M.); (B.M.S.); (B.A.S.O.); (E.D.P.); (S.P.G.)
| | - Sónia P. Gonçalves
- Centre for Textile Science and Technology (2C2T), University of Minho, Campus of Azurém, 4800-058 Guimarães, Portugal; (A.R.M.R.); (C.S.M.); (B.M.S.); (B.A.S.O.); (E.D.P.); (S.P.G.)
| | - Sílvia M. M. A. Pereira-Lima
- Centre of Chemistry (CQ), University of Minho, Campus of Gualtar, 4710-057 Braga, Portugal; (A.F.G.S.); (S.M.M.A.P.-L.); (S.P.G.C.)
| | - Susana P. G. Costa
- Centre of Chemistry (CQ), University of Minho, Campus of Gualtar, 4710-057 Braga, Portugal; (A.F.G.S.); (S.M.M.A.P.-L.); (S.P.G.C.)
| | - Helena P. Felgueiras
- Centre for Textile Science and Technology (2C2T), University of Minho, Campus of Azurém, 4800-058 Guimarães, Portugal; (A.R.M.R.); (C.S.M.); (B.M.S.); (B.A.S.O.); (E.D.P.); (S.P.G.)
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Lu G, Yang C, Chu K, Zhu Y, Huang S, Zheng J, Jia H, Li X, Ban J. Implantable celecoxib nanofibers made by electrospinning: fabrication and characterization. Nanomedicine (Lond) 2024; 19:657-669. [PMID: 38305028 DOI: 10.2217/nnm-2023-0314] [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] [Indexed: 02/03/2024] Open
Abstract
Background: Osteoarthritis causes tremendous damage to the joints, reducing the quality of life and imposing significant financial burden. An implantable drug-delivery system can improve the symptomatic manifestations with low doses and frequencies. However, the free drug has short retention in the joint cavity. Materials & methods: This study used electrostatic spinning technology to create an implantable drug-delivery system loaded with celecoxib (celecoxib nanofibers [Cel-NFs]) to improve retention and bioavailability. Results: Cel-NFs exhibited good formability, hydrophilicity and tensile properties. Cel-NFs were able to continuously release drugs for 2 weeks and increase the uptake capacity of Raw 264.7 cells, ultimately ameliorating symptoms in osteoarthritis rats. Conclusion: These results suggest that Cel-NFs can effectively ameliorate cartilage damage, reduce joint pain and alleviate osteoarthritis progression.
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Affiliation(s)
- Geng Lu
- College of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, China
- The Innovation Team for Integrating Pharmacy with Entrepreneurship, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Chuangzan Yang
- College of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, China
- The Innovation Team for Integrating Pharmacy with Entrepreneurship, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Kedi Chu
- College of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, China
- The Innovation Team for Integrating Pharmacy with Entrepreneurship, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Yi Zhu
- College of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, China
- The Innovation Team for Integrating Pharmacy with Entrepreneurship, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Sa Huang
- College of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, China
- The Innovation Team for Integrating Pharmacy with Entrepreneurship, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Juying Zheng
- College of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, China
- The Innovation Team for Integrating Pharmacy with Entrepreneurship, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Huanhuan Jia
- Guangdong Provincial Key Laboratory of Advanced Drug Delivery Sysytems, Guangdong Provincial Engineering Center of Topical Precise Drug Delivery System, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Xiaofang Li
- College of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, China
- The Innovation Team for Integrating Pharmacy with Entrepreneurship, Guangdong Pharmaceutical University, Guangzhou, 510006, China
- Guangdong Laboratory Animals Monitoring Institute, Guangdong Provincial Key Laboratory of Laboratory Animals, Guangzhou, 510663, China
| | - Junfeng Ban
- College of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, China
- The Innovation Team for Integrating Pharmacy with Entrepreneurship, Guangdong Pharmaceutical University, Guangzhou, 510006, China
- Guangdong Laboratory Animals Monitoring Institute, Guangdong Provincial Key Laboratory of Laboratory Animals, Guangzhou, 510663, China
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Qian C, Liu Y, Chen S, Zhang C, Chen X, Liu Y, Liu P. Electrospun core-sheath PCL nanofibers loaded with nHA and simvastatin and their potential bone regeneration applications. Front Bioeng Biotechnol 2023; 11:1205252. [PMID: 37564996 PMCID: PMC10410860 DOI: 10.3389/fbioe.2023.1205252] [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: 05/03/2023] [Accepted: 07/17/2023] [Indexed: 08/12/2023] Open
Abstract
Introduction: Drugs and biocompatible nanoparticles have raised significant potential in advancing the bone regeneration. Electrospinning technology enables the full realization of the value of drugs and nanoparticles. Methods: In this study, we have successfully fabricated core-sheath nanofibers solely composed of polycaprolactone (PCL) polymer. Simvastatin (SIM) was confined to the core of the nanofibers while nanohydroxyapatite (nHA) was loaded on the nanofiber surface. Results: All the prepared nanofibers exhibited a cylindrical micromorphology, and the core-sheath structure was exploited using a Transmission Electron Microscope. X-ray pattern results indicated that SIM was in an amorphous state within nanofibers, while Fourier Transform InfraRed spectroscopy showed excellent chemical compatibility among SIM, nHA, and PCL. The actual loading of nHA within the nanofiber was determined by a thermogravimetric test due to the high melting point of nHA. Core-sheath nanofibers could release SIM for 672 h, which was attributed to the core-sheath structure. Furthermore, nanofibers loaded with SIM or nHA had a positive impact on cell proliferation, with the core-sheath nanofibers displaying the most favorable cell proliferation behavior. Discussion: Such a synergistic facilitation strategy based on materials and nanostructure may encourage researchers to exploit new biomedical materials in future.
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Affiliation(s)
- Chenghui Qian
- Shanghai Stomatological Hospital and School of Stomatology, Fudan University, Shanghai, China
- Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases, Fudan University, Shanghai, China
| | - Yubo Liu
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai, China
| | - Si Chen
- Shanghai Stomatological Hospital and School of Stomatology, Fudan University, Shanghai, China
- Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases, Fudan University, Shanghai, China
| | - Chenyang Zhang
- Shanghai Stomatological Hospital and School of Stomatology, Fudan University, Shanghai, China
- Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases, Fudan University, Shanghai, China
| | - Xiaohong Chen
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai, China
- Shanghai Engineering Technology Research Center for High-Performance Medical Device Materials, Shanghai, China
| | - Yuehua Liu
- Shanghai Stomatological Hospital and School of Stomatology, Fudan University, Shanghai, China
- Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases, Fudan University, Shanghai, China
| | - Ping Liu
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai, China
- Shanghai Engineering Technology Research Center for High-Performance Medical Device Materials, Shanghai, China
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Istratov V, Gomzyak V, Vasnev V, Baranov OV, Mezhuev Y, Gritskova I. Branched Amphiphilic Polylactides as a Polymer Matrix Component for Biodegradable Implants. Polymers (Basel) 2023; 15:polym15051315. [PMID: 36904556 PMCID: PMC10007683 DOI: 10.3390/polym15051315] [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: 12/21/2022] [Revised: 03/02/2023] [Accepted: 03/02/2023] [Indexed: 03/08/2023] Open
Abstract
The combination of biocompatibility, biodegradability, and high mechanical strength has provided a steady growth in interest in the synthesis and application of lactic acid-based polyesters for the creation of implants. On the other hand, the hydrophobicity of polylactide limits the possibilities of its use in biomedical fields. The ring-opening polymerization of L-lactide, catalyzed by tin (II) 2-ethylhexanoate in the presence of 2,2-bis(hydroxymethyl)propionic acid, and an ester of polyethylene glycol monomethyl ester and 2,2-bis(hydroxymethyl)propionic acid accompanied by the introduction of a pool of hydrophilic groups, that reduce the contact angle, were considered. The structures of the synthesized amphiphilic branched pegylated copolylactides were characterized by 1H NMR spectroscopy and gel permeation chromatography. The resulting amphiphilic copolylactides, with a narrow MWD (1.14-1.22) and molecular weight of 5000-13,000, were used to prepare interpolymer mixtures with PLLA. Already, with the introduction of 10 wt% branched pegylated copolylactides, PLLA-based films had reduced brittleness, hydrophilicity, with a water contact angle of 71.9-88.5°, and increased water absorption. An additional decrease in the water contact angle, of 66.1°, was achieved by filling the mixed polylactide films with 20 wt% hydroxyapatite, which also led to a moderate decrease in strength and ultimate tensile elongation. At the same time, the PLLA modification did not have a significant effect on the melting point and the glass transition temperature; however, the filling with hydroxyapatite increased the thermal stability.
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Affiliation(s)
- Vladislav Istratov
- A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, Vavilov Street, 28, 119991 Moscow, Russia
- Bauman Moscow State Technical University, Baumanskaya 2-ya Str., 5/1, 105005 Moscow, Russia
- Correspondence: (V.I.); (Y.M.)
| | - Vitaliy Gomzyak
- Department of Chemistry and Technology of Macromolecular Compounds, MIREA—Russian Technological University (RTU MIREA), Vernadskogo Avenue 78, 119454 Moscow, Russia
| | - Valerii Vasnev
- A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, Vavilov Street, 28, 119991 Moscow, Russia
| | - Oleg V. Baranov
- A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, Vavilov Street, 28, 119991 Moscow, Russia
| | - Yaroslav Mezhuev
- A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, Vavilov Street, 28, 119991 Moscow, Russia
- Department of Biomaterials, Mendeleev University of Chemical Technology of Russia, Miusskaya Sq., 9, 125047 Moscow, Russia
- Correspondence: (V.I.); (Y.M.)
| | - Inessa Gritskova
- Department of Chemistry and Technology of Macromolecular Compounds, MIREA—Russian Technological University (RTU MIREA), Vernadskogo Avenue 78, 119454 Moscow, Russia
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