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Altun E, Bayram C, Gultekinoglu M, Matharu R, Delbusso A, Homer-Vanniasinkam S, Edirisinghe M. Pressure-Spun Fibrous Surgical Sutures for Localized Antibacterial Delivery: Development, Characterization, and In Vitro Evaluation. ACS APPLIED MATERIALS & INTERFACES 2023; 15:45561-45573. [PMID: 37729472 PMCID: PMC10561146 DOI: 10.1021/acsami.3c07956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Accepted: 09/06/2023] [Indexed: 09/22/2023]
Abstract
Surgical sutures designed to prevent infection are critical in addressing antibiotic-resistant pathogens that cause surgical site infections. Instead of antibiotics, alternative materials such as biocides have been assessed for coating commercially used sutures due to emerging antibiotic resistance concerns worldwide. This study has a new approach to the development of fibrous surgical sutures with the ability to deliver localized antibacterial agents. A new manufacturing process based on pressure spinning was used for the first time in the production of fibrous surgical sutures by physically blending antibacterial triclosan (Tri) agent with poly(lactic-co-glycolic acid) (PLGA) and poly(ethylene oxide) (PEO) polymers. Fibrous surgical sutures with virgin PLGA, virgin PEO, different ratios of PLGA-PEO, and different ratios of Tri-loaded PLGA-PEO fibrous sutures were produced to mimic the FDA- and NICE-approved PLGA-based sutures available in the market and compared for their characteristics. They were also tested simultaneously with commercially available sutures to compare their in vitro biodegradation, antibacterial, drug release, and cytotoxicity properties. After in vitro antibacterial testing for 24 h, sutures having 285 ± 12 μg/mg Tri loading were selected as a model for further testing as they exhibited antibacterial activity against all tested bacteria strains. The selected model of antibacterial fibrous sutures exhibited an initial burst of Tri release within 24 h, followed by a sustained release for the remaining time until the sutures completely degraded within 21 days. The cell viability assay showed that these surgical sutures had no cytotoxic effect on mammalian cells.
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Affiliation(s)
- Esra Altun
- Department
of Mechanical Engineering, University College
London (UCL), Torrington Place, London WC1E 7JE, U.K.
| | - Cem Bayram
- Department
of Nanotechnology and Nanomedicine, Graduate School of Science and
Engineering, Hacettepe University, Ankara 06800, Turkey
| | - Merve Gultekinoglu
- Department
of Nanotechnology and Nanomedicine, Graduate School of Science and
Engineering, Hacettepe University, Ankara 06800, Turkey
| | - Rupy Matharu
- Department
of Civil, Environmental and Geomatic Engineering, University College London, Gower Street, London WC1E
6BT, U.K.
| | - Angelo Delbusso
- Department
of Mechanical Engineering, University College
London (UCL), Torrington Place, London WC1E 7JE, U.K.
| | | | - Mohan Edirisinghe
- Department
of Mechanical Engineering, University College
London (UCL), Torrington Place, London WC1E 7JE, U.K.
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2
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Minooei F, Gilbert NM, Zhang L, Sarah NeCamp M, Mahmoud MY, Kyser AJ, Tyo KM, Watson WH, Patwardhan R, Lewis WG, Frieboes HB, Lewis AL, Steinbach-Rankins JM. Rapid-dissolving electrospun nanofibers for intra-vaginal antibiotic or probiotic delivery. Eur J Pharm Biopharm 2023; 190:81-93. [PMID: 37479065 PMCID: PMC10530173 DOI: 10.1016/j.ejpb.2023.07.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 07/12/2023] [Accepted: 07/17/2023] [Indexed: 07/23/2023]
Abstract
The emergence of probiotics as an alternative and adjunct to antibiotic treatment for microbiological disturbances of the female genitourinary system requires innovative delivery platforms for vaginal applications. This study developed a new, rapid-dissolving form using electrospun polyethylene oxide (PEO) fibers for delivery of antibiotic metronidazole or probiotic Lactobacillus acidophilus, and performed evaluation in vitro and in vivo. Fibers did not generate overt pathophysiology or encourage Gardnerella growth in a mouse vaginal colonization model, inducing no alterations in vaginal mucosa at 24 hr post-administration. PEO-fibers incorporating metronidazole (100 µg MET/mg polymer) effectively prevented and treated Gardnerella infections (∼3- and 2.5-log reduction, respectively, 24 hr post treatment) when administered vaginally. Incorporation of live Lactobacillus acidophilus (107 CFU/mL) demonstrated viable probiotic delivery in vitro by PEO and polyvinyl alcohol (PVA) fibers to inhibit Gardnerella (108 CFU/mL) in bacterial co-cultures (9.9- and 7.0-log reduction, respectively, 24 hr post-inoculation), and in the presence of vaginal epithelial cells (6.9- and 8.0-log reduction, respectively, 16 hr post-inoculation). Administration of Lactobacillus acidophilus in PEO-fibers achieved vaginal colonization in mice similar to colonization observed with free Lactobacillus. acidophilus. These experiments provide proof-of-concept for rapid-dissolving electrospun fibers as a successful platform for intra-vaginal antibiotic or probiotic delivery.
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Affiliation(s)
- Farnaz Minooei
- Department of Chemical Engineering, University of Louisville Speed School of Engineering, Louisville, KY 40202, USA
| | - Nicole M Gilbert
- Department of Pediatrics, Division of Infectious Diseases, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Longyun Zhang
- Department of Bioengineering, University of Louisville Speed School of Engineering, Louisville, KY 40202, USA
| | - Mary Sarah NeCamp
- Department of Bioengineering, University of Louisville Speed School of Engineering, Louisville, KY 40202, USA
| | - Mohamed Y Mahmoud
- Department of Bioengineering, University of Louisville Speed School of Engineering, Louisville, KY 40202, USA; Department of Toxicology and Forensic Medicine, Faculty of Veterinary Medicine, Cairo University, Egypt
| | - Anthony J Kyser
- Department of Bioengineering, University of Louisville Speed School of Engineering, Louisville, KY 40202, USA
| | - Kevin M Tyo
- Department of Pharmacology and Toxicology, University of Louisville School of Medicine, Louisville, KY 40202, USA
| | - Walter H Watson
- Department of Medicine, Division of Gastroenterology, Hepatology and Nutrition, School of Medicine, University of Louisville, KY 40202, USA
| | - Ruta Patwardhan
- Department of Bioengineering, University of Louisville Speed School of Engineering, Louisville, KY 40202, USA
| | - Warren G Lewis
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of California San Diego, La Jolla, CA USA; Glycobiology Research and Training Center, University of California San Diego, La Jolla, CA USA
| | - Hermann B Frieboes
- Department of Bioengineering, University of Louisville Speed School of Engineering, Louisville, KY 40202, USA; Department of Pharmacology and Toxicology, University of Louisville School of Medicine, Louisville, KY 40202, USA; Center for Predictive Medicine, University of Louisville, 505 S. Hancock St., Louisville, KY 40202, USA; UofL Health - Brown Cancer Center, University of Louisville, KY, 40202, USA.
| | - Amanda L Lewis
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of California San Diego, La Jolla, CA USA; Glycobiology Research and Training Center, University of California San Diego, La Jolla, CA USA
| | - Jill M Steinbach-Rankins
- Department of Bioengineering, University of Louisville Speed School of Engineering, Louisville, KY 40202, USA; Department of Pharmacology and Toxicology, University of Louisville School of Medicine, Louisville, KY 40202, USA; Center for Predictive Medicine, University of Louisville, 505 S. Hancock St., Louisville, KY 40202, USA; Department of Microbiology and Immunology, University of Louisville School of Medicine, Louisville, KY 40202, USA
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3
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Xu C, Bonfante G, Park J, Salles V, Kim B. Fabrication of an electrospun polycaprolactone substrate for colorimetric bioassays. Biomed Microdevices 2023; 25:32. [PMID: 37589770 PMCID: PMC10435419 DOI: 10.1007/s10544-023-00673-z] [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] [Accepted: 08/10/2023] [Indexed: 08/18/2023]
Abstract
Colorimetric assays rely on detecting colour changes to measure the concentration of target molecules. Paper substrates are commonly used for the detection of biomarkers due to their availability, porous structure, and capillarity. However, the morphological and mechanical properties of paper, such as fibre diameter, pore size, and tensile strength, cannot be easily tuned to meet the specific requirements of colorimetric sensors, including liquid capacity and reagent immobilisation. As an alternative to paper materials, biodegradable polymeric membranes made of electrospun polycaprolactone (PCL) fibres can provide various tunable properties related to fibre diameter and pore size.We aimed to obtain a glucose sensor substrate for colorimetric sensing using electrospinning with PCL. A feeding solution was created by mixing PCL/chloroform and 3,3',5',5'-tetramethylbenzidine (TMB)/ethanol solutions. This solution was electrospun to fabricate a porous membrane composed of microfibres consist of PCL and TMB. The central area of the membrane was made hydrophilic through air plasma treatment, and it was subsequently functionalized with a solution containing glucose oxidase, horseradish peroxidase, and trehalose.The sensing areas were evaluated by measuring colour changes in glucose solutions of varying concentrations. The oxidation reactions of glucose and TMB in sensor substrates were recorded and analysed to establish the correlation between different glucose concentrations and colour changes. For comparison, conventional paper substrates prepared with same parameters were evaluated alongside the electrospun PCL substrates. As a result, better immobilization of reagents and higher sensitivity of glucose were achieved with PCL substrates, indicating their potential usage as a new sensing substrate for bioassays.
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Affiliation(s)
- Chensong Xu
- Department of Precision Engineering, School of Engineering, The University of Tokyo, Tokyo, 153-8505, Japan
| | - Gwenaël Bonfante
- Institute of Industrial Science, The University of Tokyo, Tokyo, 153-8505, Japan
- LIMMS, CNRS-IIS UMI 2820, The University of Tokyo, Tokyo, 153-8505, Japan
| | - Jongho Park
- Institute of Industrial Science, The University of Tokyo, Tokyo, 153-8505, Japan
| | - Vincent Salles
- LIMMS, CNRS-IIS UMI 2820, The University of Tokyo, Tokyo, 153-8505, Japan
| | - Beomjoon Kim
- Institute of Industrial Science, The University of Tokyo, Tokyo, 153-8505, Japan.
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4
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Faglie A, Emerine R, Chou SF. Effects of Poloxamers as Excipients on the Physicomechanical Properties, Cellular Biocompatibility, and In Vitro Drug Release of Electrospun Polycaprolactone (PCL) Fibers. Polymers (Basel) 2023; 15:2997. [PMID: 37514386 PMCID: PMC10383550 DOI: 10.3390/polym15142997] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 06/29/2023] [Accepted: 06/29/2023] [Indexed: 07/30/2023] Open
Abstract
Electrospun microfibers are emerging as one of the advanced wound dressing materials for acute and/or chronic wounds, especially with their ability to carry drugs and excipients at a high loading while being able to deliver them in a controlled manner. Various attempts were made to include excipients in electrospun microfibers as wound dressing materials, and one of them is poloxamer, an amphiphilic polymer that exhibits wound debridement characteristics. In this study, we formulated two types of poloxamers (i.e., P188 and P338) at 30% (w/w) loading into electrospun polycaprolactone (PCL) fibers to evaluate their physicomechanical properties, biocompatibility, and in vitro drug release of a model drug. Our findings showed that the incorporation of poloxamers in the PCL solutions during electrospinning resulted in a greater "whipping" process for a larger fiber deposition area. These fibers were mechanically stiffer and stronger, but less ductile as compared to the PCL control fibers. The incorporation of poloxamers into electrospun PCL fibers reduced the surface hydrophobicity of fibers according to our water contact angle studies and in vitro degradation studies. The fibers' mechanical properties returned to those of the PCL control groups after "dumping" the poloxamers. Moreover, poloxamer-loaded PCL fibers accelerated the in vitro release of the model drug due to surface wettability. These poloxamer-loaded PCL fibers were biocompatible, as validated by MTT assays using A549 cells. Overall, we demonstrated the ability to achieve a high loading of poloxamers in electrospun fibers for wound dressing applications. This work provided the basic scientific understanding of materials science and bioengineering with an emphasis on the engineering applications of advanced wound dressings.
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Affiliation(s)
- Addison Faglie
- Department of Mechanical Engineering, College of Engineering, The University of Texas at Tyler, Tyler, TX 75799, USA
| | - Rachel Emerine
- Department of Mechanical Engineering, College of Engineering, The University of Texas at Tyler, Tyler, TX 75799, USA
| | - Shih-Feng Chou
- Department of Mechanical Engineering, College of Engineering, The University of Texas at Tyler, Tyler, TX 75799, USA
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5
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González-González AM, Cruz R, Rosales-Ibáñez R, Hernández-Sánchez F, Carrillo-Escalante HJ, Rodríguez-Martínez JJ, Velasquillo C, Talamás-Lara D, Ludert JE. In Vitro and In Vivo Evaluation of a Polycaprolactone (PCL)/Polylactic-Co-Glycolic Acid (PLGA) (80:20) Scaffold for Improved Treatment of Chondral (Cartilage) Injuries. Polymers (Basel) 2023; 15:polym15102324. [PMID: 37242899 DOI: 10.3390/polym15102324] [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: 02/28/2023] [Revised: 05/09/2023] [Accepted: 05/10/2023] [Indexed: 05/28/2023] Open
Abstract
Articular cartilage is a specialized tissue that provides a smooth surface for joint movement and load transmission. Unfortunately, it has limited regenerative capacity. Tissue engineering, combining different cell types, scaffolds, growth factors, and physical stimulation has become an alternative for repairing and regenerating articular cartilage. Dental Follicle Mesenchymal Stem Cells (DFMSCs) are attractive candidates for cartilage tissue engineering because of their ability to differentiate into chondrocytes, on the other hand, the polymers blend like Polycaprolactone (PCL) and Poly Lactic-co-Glycolic Acid (PLGA) have shown promise given their mechanical properties and biocompatibility. In this work, the physicochemical properties of polymer blends were evaluated by Fourier Transform Infrared Spectroscopy (FTIR) and Scanning Electron Microscope (SEM) and were positive for both techniques. The DFMSCs demonstrated stemness by flow cytometry. The scaffold showed to be a non-toxic effect when we evaluated it with Alamar blue, and the samples were analyzed using SEM and phalloidin staining to evaluate cell adhesion to the scaffold. The synthesis of glycosaminoglycans was positive on the construct in vitro. Finally, the PCL/PLGA scaffold showed a better repair capacity than two commercial compounds, when tested in a chondral defect rat model. These results suggest that the PCL/PLGA (80:20) scaffold may be suitable for applications in the tissue engineering of articular hyaline cartilage.
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Affiliation(s)
- Arely M González-González
- Department of Infectomics and Molecular Pathogenesis, Center for Research and Advanced Studies (CINVESTAV), Mexico City 07360, Mexico
- Laboratorio de Ingeniería Tisular y Medicina Traslacional, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de Mexico (UNAM), Mexico City 54090, Mexico
| | - Raymundo Cruz
- Department of Infectomics and Molecular Pathogenesis, Center for Research and Advanced Studies (CINVESTAV), Mexico City 07360, Mexico
| | - Raúl Rosales-Ibáñez
- Laboratorio de Ingeniería Tisular y Medicina Traslacional, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de Mexico (UNAM), Mexico City 54090, Mexico
| | | | | | - Jesús Jiovanni Rodríguez-Martínez
- Laboratorio de Ingeniería Tisular y Medicina Traslacional, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de Mexico (UNAM), Mexico City 54090, Mexico
| | - Cristina Velasquillo
- Unidad de Ingeniería de Tejidos, Terapia Celular y Medicina Regenerativa, Instituto Nacional de Rehabilitación "Luis Guillermo Ibarra Ibarra", Ciudad de Mexico 14389, Mexico
| | - Daniel Talamás-Lara
- Department of Infectomics and Molecular Pathogenesis, Center for Research and Advanced Studies (CINVESTAV), Mexico City 07360, Mexico
| | - Juan E Ludert
- Department of Infectomics and Molecular Pathogenesis, Center for Research and Advanced Studies (CINVESTAV), Mexico City 07360, Mexico
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6
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Parhi R. Recent advances in 3D printed microneedles and their skin delivery application in the treatment of various diseases. J Drug Deliv Sci Technol 2023. [DOI: 10.1016/j.jddst.2023.104395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
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7
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Youssef SH, Kim S, Khetan R, Afinjuomo F, Song Y, Garg S. The development of 5-fluorouracil biodegradable implants: A comparative study of PCL/PLGA blends. J Drug Deliv Sci Technol 2023. [DOI: 10.1016/j.jddst.2023.104300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2023]
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8
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Synergetic dual antibiotics-loaded chitosan/poly (vinyl alcohol) nanofibers with sustained antibacterial delivery for treatment of XDR bacteria-infected wounds. Int J Biol Macromol 2023; 229:22-34. [PMID: 36460249 DOI: 10.1016/j.ijbiomac.2022.11.288] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 11/12/2022] [Accepted: 11/28/2022] [Indexed: 11/30/2022]
Abstract
Resistance of bacterial pathogens to conventional antibiotics has remained a significant challenge in managing post-wound infections, especially in developing countries. Here, a nanofibrous chitosan/poly (vinyl alcohol) (CS/PVA) mat was designed for controlled delivery of three different concentrations of two antibiotics (colistin/meropenem ratio of 32/64 μg/ml (AB1), 64/128 μg/ml (AB2), and 128/256 (AB3) μg/ml) with synergistic antibacterial activity against ATCC and extensively drug-resistant (XDR) Acinetobacter baumannii clinical isolates. The scaffolds showed a uniform fibrous structure with no bead formation with a sustained release of the antibiotics for one week. The elongation at break, wettability, porosity, and average fiber diameter decreased with increased antibiotics concentrations. Young's modulus and tensile strength showed a significant increase after adding antibiotics. All the constructs showed excellent in vitro cytocompatibility for fibroblasts and biocompatibility in an animal model. The antibacterial assays confirmed the dose-dependent antibacterial activity of the CS/PVA. The scaffolds loaded with AB2 and AB3 showed biocidal properties against ATCC, while only CS/PVA/AB3 had antibacterial activity against XDR clinical isolates. This study suggests the CS/PVA/AB3 nanofibrous scaffold contained 128/256 μg/ml colistin/meropenem as an excellent antibacterial wound dressing for protection of skin wounds from XDR clinical isolates and now promises to proceed with pre-clinical investigations.
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9
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Krysiak ZJ, Stachewicz U. Electrospun fibers as carriers for topical drug delivery and release in skin bandages and patches for atopic dermatitis treatment. WILEY INTERDISCIPLINARY REVIEWS. NANOMEDICINE AND NANOBIOTECHNOLOGY 2023; 15:e1829. [PMID: 35817463 DOI: 10.1002/wnan.1829] [Citation(s) in RCA: 27] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 05/27/2022] [Accepted: 05/31/2022] [Indexed: 01/31/2023]
Abstract
The skin is a complex layer system and the most important barrier between the environment and the organism. In this review, we describe some widespread skin problems, with a focus on eczema, which are affecting more and more people all over the world. Most of treatment methods for atopic dermatitis (AD) are focused on increasing skin moisture and protecting from bacterial infection and external irritation. Topical and transdermal treatments have specific requirements for drug delivery. Breathability, flexibility, good mechanical properties, biocompatibility, and efficacy are important for the patches used for skin. Up to today, electrospun fibers are mostly used for wound dressing. Their properties, however, meet the requirements for skin patches for the treatment of AD. Active agents can be incorporated into fibers by blending, coaxial or side-by-side electrospinning, and also by physical absorption post-processing. Drug release from the electrospun membranes is affected by drug and polymer properties and the technique used to combine them into the patch. We describe in detail the in vitro release mechanisms, parameters affecting the drug transport, and their kinetics, including theoretical approaches. In addition, we present the current research on skin patch design. This review summarizes the current extensive know-how on electrospun fibers as skin drug delivery systems, while underlining the advantages in their prospective use as patches for atopic dermatitis. This article is categorized under: Implantable Materials and Surgical Technologies > Nanomaterials and Implants Implantable Materials and Surgical Technologies > Nanotechnology in Tissue Repair and Replacement Therapeutic Approaches and Drug Discovery > Emerging Technologies.
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Affiliation(s)
- Zuzanna J Krysiak
- Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, Krakow, Poland
| | - Urszula Stachewicz
- Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, Krakow, Poland
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10
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Wangsawangrung N, Choipang C, Chaiarwut S, Ekabutr P, Suwantong O, Chuysinuan P, Techasakul S, Supaphol P. Quercetin/Hydroxypropyl-β-Cyclodextrin Inclusion Complex-Loaded Hydrogels for Accelerated Wound Healing. Gels 2022; 8:gels8090573. [PMID: 36135285 PMCID: PMC9498314 DOI: 10.3390/gels8090573] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 08/31/2022] [Accepted: 09/06/2022] [Indexed: 11/18/2022] Open
Abstract
This study concentrated on developing quercetin/cyclodextrin inclusion complex-loaded polyvinyl alcohol (PVA) hydrogel for enhanced stability and solubility. Quercetin was encapsulated in hydroxypropyl-β-cyclodextrin (HP-β-CD) by the solvent evaporation method. The prepared quercetin/HP-β-CD inclusion complex showed 90.50 ± 1.84% encapsulation efficiency (%EE) and 4.67 ± 0.13% loading capacity (%LC), and its successful encapsulation was confirmed by FT-IR and XRD. The quercetin/HP-β-CD inclusion complex was well dispersed in viscous solutions of PVA in various amounts (0.5, 1.0, 1.5. 2.5, and 5.0% w/v ratio), and the drug-loaded polymer solution was physically crosslinked by multiple freeze–thaw cycles to form the hydrogel. The cumulative amount of quercetin released from the prepared hydrogels increased with increasing concentrations of the inclusion complex. The introduction of the inclusion complex into the PVA hydrogels had no influence on their swelling ratio, but gelation and compressive strength reduced with increasing inclusion complex concentration. The potential cytotoxicity of quercetin/HP-β-CD inclusion complex hydrogels was evaluated by MTT assay and expressed as % cell viability. The results show biocompatibility toward NCTC 929 clone cells. The inhibitory efficacy was evaluated with 2, 2-diphenyl-1-picrylhydrazyl (DPPH) free radical scavenging assay, and the results show a higher level of antioxidant activity for quercetin/HP-β-CD inclusion complex hydrogels compared with free quercetin. The findings of our study indicate that the developed quercetin/HP-β-CD inclusion complex hydrogels possess the required properties and can be proposed as a quercetin delivery system for wound-healing applications.
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Affiliation(s)
| | - Chasuda Choipang
- The Petroleum and Petrochemical College, Chulalongkorn University, Bangkok 10330, Thailand
- Research Unit on Herbal Extracts-Infused Advanced Wound Dressing, Chulalongkorn University, Bangkok 10330, Thailand
| | - Sonthaya Chaiarwut
- The Petroleum and Petrochemical College, Chulalongkorn University, Bangkok 10330, Thailand
- Research Unit on Herbal Extracts-Infused Advanced Wound Dressing, Chulalongkorn University, Bangkok 10330, Thailand
| | - Pongpol Ekabutr
- The Petroleum and Petrochemical College, Chulalongkorn University, Bangkok 10330, Thailand
| | - Orawan Suwantong
- School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand
- Center of Chemical Innovation for Sustainability (CIS), Mae Fah Luang University, Chiang Rai 57100, Thailand
| | - Piyachat Chuysinuan
- Laboratory of Organic Synthesis, Chulabhorn Research Institute, Bangkok 10210, Thailand
| | - Supanna Techasakul
- Laboratory of Organic Synthesis, Chulabhorn Research Institute, Bangkok 10210, Thailand
| | - Pitt Supaphol
- The Petroleum and Petrochemical College, Chulalongkorn University, Bangkok 10330, Thailand
- Research Unit on Herbal Extracts-Infused Advanced Wound Dressing, Chulalongkorn University, Bangkok 10330, Thailand
- Correspondence: ; Tel.: +66-2-2184-117
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11
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Design of a nanofibrous guided tissue regeneration carrier as a potential drug delivery system for tetracycline hydrochloride in the management of periodontitis. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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12
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Talimi R, Rabbani S, Mehryab F, Haeri A. Perivascular application of sirolimus multilayer nanofibrous mat for prevention of vascular stenosis: Preparation, In vitro characterization, and In vivo efficacy evaluation. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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13
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Farhat W, Yeung V, Ross A, Kahale F, Boychev N, Kuang L, Chen L, Ciolino JB. Advances in biomaterials for the treatment of retinoblastoma. Biomater Sci 2022; 10:5391-5429. [PMID: 35959730 DOI: 10.1039/d2bm01005d] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Retinoblastoma is the most common primary intraocular malignancy in children. Although traditional chemotherapy has shown some success in retinoblastoma management, there are several shortcomings to this approach, including inadequate pharmacokinetic parameters, multidrug resistance, low therapeutic efficiency, nonspecific targeting, and the need for adjuvant therapy, among others. The revolutionary developments in biomaterials for drug delivery have enabled breakthroughs in cancer management. Today, biomaterials are playing a crucial role in developing more efficacious retinoblastoma treatments. The key goal in the evolution of drug delivery biomaterials for retinoblastoma therapy is to resolve delivery-associated obstacles and lower nonlocal exposure while ameliorating certain adverse effects. In this review, we will first delve into the historical perspective of retinoblastoma with a focus on the classical treatments currently used in clinics to enhance patients' quality of life and survival rate. As we move along, we will discuss biomaterials for drug delivery applications. Various aspects of biomaterials for drug delivery will be dissected, including their features and recent advances. In accordance with the current advances in biomaterials, we will deliver a synopsis on the novel chemotherapeutic drug delivery strategies and evaluate these approaches to gain new insights into retinoblastoma treatment.
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Affiliation(s)
- Wissam Farhat
- Department of Ophthalmology, Schepens Eye Research Institute of Mass Eye and Ear, Harvard Medical School, Boston, MA 02114, USA.
| | - Vincent Yeung
- Department of Ophthalmology, Schepens Eye Research Institute of Mass Eye and Ear, Harvard Medical School, Boston, MA 02114, USA.
| | - Amy Ross
- Department of Ophthalmology, Schepens Eye Research Institute of Mass Eye and Ear, Harvard Medical School, Boston, MA 02114, USA.
| | - Francesca Kahale
- Department of Ophthalmology, Schepens Eye Research Institute of Mass Eye and Ear, Harvard Medical School, Boston, MA 02114, USA.
| | - Nikolay Boychev
- Department of Ophthalmology, Schepens Eye Research Institute of Mass Eye and Ear, Harvard Medical School, Boston, MA 02114, USA.
| | - Liangju Kuang
- Department of Ophthalmology, Schepens Eye Research Institute of Mass Eye and Ear, Harvard Medical School, Boston, MA 02114, USA.
| | - Lin Chen
- Department of Ophthalmology, Schepens Eye Research Institute of Mass Eye and Ear, Harvard Medical School, Boston, MA 02114, USA. .,Department of Ophthalmology, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China.,Department of Optometry and Visual Science, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Joseph B Ciolino
- Department of Ophthalmology, Schepens Eye Research Institute of Mass Eye and Ear, Harvard Medical School, Boston, MA 02114, USA.
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14
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Recent advances in microneedle designs and their applications in drug and cosmeceutical delivery. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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15
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An update on microneedle in insulin delivery: Quality attributes, clinical status and challenges for clinical translation. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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16
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Elder S, Roberson JG, Warren J, Lawson R, Young D, Stokes S, Ross MK. Evaluation of Electrospun PCL-PLGA for Sustained Delivery of Kartogenin. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27123739. [PMID: 35744864 PMCID: PMC9229984 DOI: 10.3390/molecules27123739] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 06/06/2022] [Accepted: 06/08/2022] [Indexed: 01/01/2023]
Abstract
In this study, kartogenin was incorporated into an electrospun blend of polycaprolactone and poly(lactic-co-glycolic acid) (1:1) to determine the feasibility of this system for sustained drug delivery. Kartogenin is a small-molecule drug that could enhance the outcome of microfracture, a cartilage restoration procedure, by selectively stimulating chondrogenic differentiation of endogenous bone marrow mesenchymal stem cells. Experimental results showed that kartogenin did not affect the electrospinnability of the polymer blend, and it had negligible effects on fiber morphology and scaffold mechanical properties. The loading efficiency of kartogenin into electrospun membranes was nearly 100%, and no evidence of chemical reaction between kartogenin and the polymers was detected by Fourier transform infrared spectroscopy. Analysis of the released drug using high-performance liquid chromatography-photodiode array detection indicated an abundance of kartogenin and only a small amount of its major hydrolysis product. Kartogenin displayed a typical biphasic release profile, with approximately 30% being released within 24 h followed by a much slower, constant rate of release up to 28 days. Although additional development is needed to tune the release kinetics and address issues common to electrospun scaffolds (e.g., high fiber density), the results of this study demonstrated that a scaffold electrospun from biodegradable synthetic polymers is a suitable kartogenin delivery vehicle.
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Affiliation(s)
- Steven Elder
- Department of Agricultural & Biological Engineering, James Worth Bagley College of Engineering, Mississippi State University, Starkville, MS 39762, USA; (J.G.R.); (J.W.)
- Correspondence: ; Tel.: +1-662-325-9107
| | - John Graham Roberson
- Department of Agricultural & Biological Engineering, James Worth Bagley College of Engineering, Mississippi State University, Starkville, MS 39762, USA; (J.G.R.); (J.W.)
| | - James Warren
- Department of Agricultural & Biological Engineering, James Worth Bagley College of Engineering, Mississippi State University, Starkville, MS 39762, USA; (J.G.R.); (J.W.)
| | - Robert Lawson
- Department of Biochemistry, Molecular Biology, Entomology and Plant Pathology, College of Agriculture & Life Sciences, Mississippi State University, Starkville, MS 39762, USA;
| | - Daniel Young
- Department of Comparative Biomedical Sciences, College of Veterinary Medicine, Mississippi State University, Starkville, MS 39762, USA; (D.Y.); (M.K.R.)
| | - Sean Stokes
- Department of Chemistry, College of Arts and Sciences, Mississippi State University, Starkville, MS 39762, USA;
| | - Matthew K. Ross
- Department of Comparative Biomedical Sciences, College of Veterinary Medicine, Mississippi State University, Starkville, MS 39762, USA; (D.Y.); (M.K.R.)
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17
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Nitti P, Palazzo B, Gallo N, Scalera F, Sannino A, Gervaso F. Smooth‐rough asymmetric
PLGA
structure made of dip coating membrane and electrospun nanofibrous scaffolds meant to be used for guided tissue regeneration of periodontium. POLYM ENG SCI 2022. [DOI: 10.1002/pen.25988] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Paola Nitti
- Biomaterials Laboratory, Department of Engineering for Innovation University of Salento Lecce
| | - Barbara Palazzo
- Ghimas S.p.A., c/o Dhitech Scarl Lecce Italy
- ENEA Division for Sustainable Materials Research Centre of Brindisi Brindisi Italy
| | - Nunzia Gallo
- Biomaterials Laboratory, Department of Engineering for Innovation University of Salento Lecce
| | - Francesca Scalera
- Biomaterials Laboratory, Department of Engineering for Innovation University of Salento Lecce
- Department of Physical Sciences and Technologies of Matter Institute of Nanotechnology‐CNR Lecce Italy
| | - Alessandro Sannino
- Biomaterials Laboratory, Department of Engineering for Innovation University of Salento Lecce
| | - Francesca Gervaso
- Biomaterials Laboratory, Department of Engineering for Innovation University of Salento Lecce
- Department of Physical Sciences and Technologies of Matter Institute of Nanotechnology‐CNR Lecce Italy
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18
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Avci MO, Muzoglu N, Yilmaz AE, Yarman BS. Antibacterial, cytotoxicity and biodegradability studies of polycaprolactone nanofibers holding green synthesized Ag nanoparticles using atropa belladonna extract. JOURNAL OF BIOMATERIALS SCIENCE. POLYMER EDITION 2022; 33:1157-1180. [PMID: 35192427 DOI: 10.1080/09205063.2022.2045665] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 02/19/2022] [Accepted: 02/20/2022] [Indexed: 06/14/2023]
Abstract
Atropa belladonna is one of the herbs used to treat wounds and prevent inflammation. This study provides a scientific assessment for the wound healing potential of biodegradable nanofibers containing Ag nanoparticles encapsulated with atropa belladonna extract (eAgNPs). Ultraviolet-visible (UV-vis) spectroscopy was used to observe the localized surface plasmon resonance (LSPR) band of AgNPs synthesized from atropa belladonna extract prepared under different conditions. Polycaprolactone (PCL) nanofibers with eAgNPs were fabricated using the electrospinning technique. The distribution of AgNPs and eAgNPs and the size of nanofibers were characterized with scanning and transmission electron microscopy (SEM, TEM) before and after degradation at the end of 18 weeks. Fourier transform infrared (FTIR) spectroscopy showed the surface interactivity between AgNPs, atropa belladonna extract and PCL nanofibers and also approved the modification of PCL nanofibers with eAgNPs. X-ray diffraction analysis (XRD) defined the formation of the crystalline AgNPs and appreciated the orientation of the nanofibers. Results of tension tests revealed that modification of PCL nanofibers with pure AgNPs and eAgNPs significantly increased strength and tensile modulus. Due to the hydrophobic nature of PCL, modification with pure AgNPs and eAgNPs slightly reduced its hydrophobicity. Biodegradation tests of PCL nanofibers with eAgNPs exhibited a higher degradation rate than neat PCL nanofibers. In vitro MTT results revealed that eAgNPs doped PCL samples have better cell viability than AgNPs doped and neat PCL nanofibers. Owing to their antibacterial properties, biodegradation rates, low cytotoxicity, mechanical and surface morphologic properties of AgNPs modified PCL nanofibers containing atropa belladonna are considered to have a great potential for skin regeneration.
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Affiliation(s)
- Muhammed Onur Avci
- Department of Biomedical Engineering, Istanbul University-Cerrahpasa (IUC), Istanbul, Turkey
| | - Nedim Muzoglu
- Department of Biomedical Engineering, Istanbul University-Cerrahpasa (IUC), Istanbul, Turkey
| | - Aysel Ersoy Yilmaz
- Department of Electric and Electronic Engineering, Istanbul University-Cerrahpasa (IUC), Istanbul, Turkey
| | - Binboga Siddik Yarman
- Department of Electric and Electronic Engineering, Istanbul University-Cerrahpasa (IUC), Istanbul, Turkey
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19
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Anaya Mancipe JM, Lopes Dias M, Moreira Thiré RMDS. Type I collagen – poly(vinyl alcohol) electrospun nanofibers: FTIR study of the collagen helical structure preservation. POLYM-PLAST TECH MAT 2022. [DOI: 10.1080/25740881.2022.2029887] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Affiliation(s)
- Javier Mauricio Anaya Mancipe
- COPPE/Programa de Engenharia Metalúrgica E de Materiais – PEMM, Universidade Federal Do Rio de Janeiro (Ufrj), Rio de Janeiro, Brazil
- Instituto de Macromoléculas Professora Eloisa Mano - IMA, Universidade Federal Do Rio de Janeiro (Ufrj), Rio de Janeiro, Brazil
| | - Marcos Lopes Dias
- Instituto de Macromoléculas Professora Eloisa Mano - IMA, Universidade Federal Do Rio de Janeiro (Ufrj), Rio de Janeiro, Brazil
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20
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Alimohammadi M, Fakhraei O, Moradi A, Kabiri M, Moradi A, Passandideh-Fard M, Tamayol A, Ebrahimzadeh MH, Mousavi Shaegh SA. Controlled release of azithromycin from polycaprolactone/chitosan nanofibrous membranes. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103246] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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21
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Hamonangan WM, Lee S, Choi YH, Li W, Tai M, Kim SH. Osmosis-Mediated Microfluidic Production of Submillimeter-Sized Capsules with an Ultrathin Shell for Cosmetic Applications. ACS APPLIED MATERIALS & INTERFACES 2022; 14:18159-18169. [PMID: 35426298 DOI: 10.1021/acsami.2c01319] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
There is a demand for submillimeter-sized capsules with an ultrathin shell with high visibility and no tactile sensation after release for cosmetic applications. However, neither bulk emulsification nor droplet microfluidics can directly produce such capsules in a controlled manner. Herein, we report the microfluidic production of submillimeter-sized capsules with a spacious lumen and ultrathin biodegradable shell through osmotic inflation of water-in-oil-in-water (W/O/W) double-emulsion drops. Monodisperse double-emulsion drops are produced with a capillary microfluidic device to have an organic solution of poly(lactic-co-glycolic acid) (PLGA) in the middle oil layer. Hypotonic conditions inflate the drops, leading to core volume expansion and oil-layer thickness reduction. Afterward, the oil layer is consolidated to the PLGA shell through solvent evaporation. The degree of inflation is controllable with the osmotic pressure. With a strong hypotonic condition, the capsule radius increases up to 330 μm and the shell thickness decreases to 1 μm so that the ratio of the thickness to radius is as small as 0.006. The large capsules with an ultrathin shell readily release their encapsulant under an external force by shell rupture. In the mechanical test of single capsules, the threshold strain for shell rupture is reduced from 75 to 12%, and the threshold stress is decreased by two orders for highly inflated capsules in comparison with noninflated ones. During the shell rupture, the tactile sensation of capsules gradually disappears as the capsules lose volume and the residual shells are ultrathin.
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Affiliation(s)
- Wahyu Martumpal Hamonangan
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Sangmin Lee
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Ye Hun Choi
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Wanzhao Li
- Infinitus R&D Center, Guangzhou 510623, China
| | - Meiling Tai
- Infinitus R&D Center, Guangzhou 510623, China
| | - Shin-Hyun Kim
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
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22
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Basic Principles of Electrospinning, Mechanisms, Nanofibre Production, and Anticancer Drug Delivery. J CHEM-NY 2022. [DOI: 10.1155/2022/9283325] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Electrospun nanofibres are environmentally friendly compounds, when compared with other approaches of manufacturing nanofibres. This study reviews an easy and simple approach process of producing nanofibres called electrospinning. This review further gives an overview and successful methodical approaches to obtain electrospun (ES) nanofibres appropriate for anticancer drug delivery. The properties and characterization of electrospun nanofibres were reported to confirm successful nanofibre production. The application of characterized ES nanofibres is to deliver the anticancer drug to the right target in the human body. The implication of this study is the application of some of the merits of ES nanofibres (biocompatability, biodegradability, low-cost production, small pore size, and ability to transport anticancer drug to the target cell or organ) to overcome the challenges experienced in the use of anticancer chemotherapeutic agents.
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23
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Joy N, Venugopal D, Samavedi S. Robust strategies to reduce burst and achieve tunable control over extended drug release from uniaxially electrospun composites. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111102] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
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24
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Hawkins BC, Burnett E, Chou SF. Physicomechanical properties and in vitro release behaviors of electrospun ibuprofen-loaded blend PEO/EC fibers. MATERIALS TODAY. COMMUNICATIONS 2022; 30:103205. [PMID: 36883050 PMCID: PMC9988240 DOI: 10.1016/j.mtcomm.2022.103205] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Electrospinning is a fiber manufacturing technique with the possibility of encapsulating high levels of small molecule drugs while providing controlled release rates. In this study, electrospun blend fibers were produced from polyethylene oxide (PEO) and ethyl cellulose (EC) at various compositions to encapsulate a poorly water-soluble drug of ibuprofen (IBP) at 30% loading. Microscopic evaluation showed smooth and defect-free fiber morphologies for blank and IBP-loaded PEO/EC fibers. The average fiber diameters and fiber yields suggested a potential optimization on the blend fiber composition for the electrospun drug-eluting PEO/EC fibers, where the highest average fiber diameter and fiber yield occurred at 50PEO/50EC fiber composition. Surface wettability studies demonstrated the effects on surface hydrophobicity from blend fibers of water-soluble PEO and hydrophobic EC as well as the incorporation of IBP. In addition, blend fibers containing more PEO promoted the water absorption rates through dissolution of the polymer matrix. Furthermore, results from mechanical testing of the blend fibers showed the highest fiber elastic modulus and tensile strength at fiber compositions in between 75PEO/25EC and 50PEO/50EC, corresponding to the average fiber diameter measurements. The in vitro IBP release rates demonstrated a dependence on the EC compositions supported by the surface wettability and water absorption rate studies. In general, our work demonstrated the ability to electrospin blank and IBP-loaded PEO/EC fibers with the scientific understandings of EC compositions on modulations of fiber physicomechanical properties and in vitro drug release rates. The findings from the work indicated the potential engineering and pharmaceutical applications of electrospun drug-eluting fibers for topical drug delivery.
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Affiliation(s)
| | | | - Shih-Feng Chou
- Correspondence to: Department of Mechanical Engineering, The University of Texas at Tyler, 3900 University Blvd., Tyler, TX 75799, USA. (S.-F. Chou)
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25
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Valachová K, El Meligy MA, Šoltés L. Hyaluronic acid and chitosan-based electrospun wound dressings: Problems and solutions. Int J Biol Macromol 2022; 206:74-91. [PMID: 35218807 DOI: 10.1016/j.ijbiomac.2022.02.117] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 02/16/2022] [Accepted: 02/18/2022] [Indexed: 11/05/2022]
Abstract
To date, available review papers related to the electrospinning of biopolymers including polysaccharides for wound healing were focused on summarizing the process conditions for two candidates, namely chitosan and hyaluronic acid. However, most reviews lack the discussion of problems of hyaluronan and chitosan electrospun nanofibers for wound dressing applications. For this reason, it is required to update information by providing a comprehensive overview of all factors which may play a role in the electrospinning of hyaluronic acid and chitosan for applications of wound dressings. This review summarizes the fabricated chitosan and hyaluronic acid electrospun nanofibers as wound dressings in the last years, including methods of preparations of nanofibers and challenges for the electrospinning of both pure chitosan and hyaluronic acid and strategies how to overcome the existing difficulties. Moreover, in this review the biological roles and mechanisms of chitosan and hyaluronic acid in the wound healing process are explained including the advantages of nanofibers for ideal wound management using the common solvents, copolymers enhancing spinning process, and the most biologically active incorporated substances thereby providing drug delivery in wound healing.
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Affiliation(s)
- Katarína Valachová
- Centre of Experimental Medicine of Slovak Academy of Sciences, Dúbravská cesta 9, 84104 Bratislava, Slovakia.
| | - Mahmoud Atya El Meligy
- Department of Chemistry, Polymer Research Group, Faculty of Science, University of Tanta, Tanta 31527, Egypt
| | - Ladislav Šoltés
- Centre of Experimental Medicine of Slovak Academy of Sciences, Dúbravská cesta 9, 84104 Bratislava, Slovakia
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26
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Physico-chemical analysis of electrospun fibers - A systematic approach. Eur J Pharm Biopharm 2022; 171:60-71. [PMID: 35007695 DOI: 10.1016/j.ejpb.2022.01.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 12/15/2021] [Accepted: 01/04/2022] [Indexed: 02/07/2023]
Abstract
Electrospun fibers emerged as promising drug delivery systems for various pharmaceutical applications due to their favorable properties. However, while for established drug delivery systems (e.g. tablets or capsules) standardized analytical procedures exist, the methodologies for characterization of electrospun fibers differ widely in the literature. Unfortunately, this situation impedes comparison of different studies and consequently hampers translation of the results into clinics. Thus, there is an urgent need for systematic studies evaluating different analytical techniques for their validity to characterize and differentiate different electrospun fibers. In this study, we aimed to identify a predictive and robust toolset of complementary analytical techniques allowing for comprehensive and discriminative evaluation of electrospun fibers. For this purpose, we fabricated two drug-loaded model formulations with contrastive physico-chemical properties and drug release kinetics. Different analytical techniques were applied for physico-chemical characterization of the spinning solutions as well as of the fibers. Each analytical method was evaluated with regard to discriminative power and individual limitations. The introduction of novel analytical approaches such as automated low-volume release testing may further advance the field of electrospinning. By combining complementary analytical methods, including spectral composition analysis, morphology visualization, characterization of physico-chemical properties and drug release kinetics, as well as the application of multivariate data analysis, we were able to establish a robust and predictive toolset, which can support comparability of future electrospinning studies and the translation from the lab bench into clinics.
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27
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Mudigunda SV, Pemmaraju DB, Paradkar S, Puppala ER, Gawali B, Upadhyayula SM, Vegi Gangamodi N, Rengan AK. Multifunctional Polymeric Nanoparticles for Chemo/Phototheranostics of Retinoblastoma. ACS Biomater Sci Eng 2021; 8:151-160. [PMID: 34933546 DOI: 10.1021/acsbiomaterials.1c01234] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Retinoblastoma (Rb) is the most critical and severe intraocular malignancy occurring in children. The clinical management of retinoblastoma is still challenging due to failure in early detection and control despite the advancements in medical strategies. Early-stage Rb tumors do not occupy major visual fields, so chemo/photothermal therapy (PTT) with biocompatible materials can be a practical approach. Herein, we report multifunctional polymeric nanoparticles (PNPs) entrapped with an FDA-approved anticancer drug, Palbociclib (PCB), and a near-infrared dye, IR820 (IR), as chemo/photothermal agents. These PCB/IR PNPs were evaluated for the combinational effect in the retinoblastoma cell line. Further, the in vivo photoacoustic imaging efficacy and acute toxicity profile of the PNPs were studied in a mice model. The results indicated that the PCB/IR PNPs exhibited a significant cytotoxic effect (86.5 ± 2.3%) in Y79 cell lines than the respective control groups upon exposure to NIR light. Qualitative and quantitative analyses indicated that PCB/IR PNPs with NIR light induction resulted in DNA damage followed by apoptosis. PCB/IR PNPs, when tested in vivo, showed optimal photoacoustic signals. Thus, the combination of PCB and PTT can emerge as a translational modality for retinoblastoma therapy.
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Affiliation(s)
- Sushma Venkata Mudigunda
- Department of Biomedical Engineering, Indian Institute of Technology Hyderabad, Kandi, Telangana 502285, India
| | - Deepak B Pemmaraju
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education & Research Guwahati, Silakatamur, Kamrup, Changsari, Assam 781101, India
| | - Shivangi Paradkar
- Department of Biomedical Engineering, Indian Institute of Technology Hyderabad, Kandi, Telangana 502285, India
| | - Eswara Rao Puppala
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education & Research Guwahati, Silakatamur, Kamrup, Changsari, Assam 781101, India
| | - Basveshwar Gawali
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education & Research Guwahati, Silakatamur, Kamrup, Changsari, Assam 781101, India
| | - Suryanarayana Murty Upadhyayula
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education & Research Guwahati, Silakatamur, Kamrup, Changsari, Assam 781101, India
| | - Naidu Vegi Gangamodi
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education & Research Guwahati, Silakatamur, Kamrup, Changsari, Assam 781101, India
| | - Aravind Kumar Rengan
- Department of Biomedical Engineering, Indian Institute of Technology Hyderabad, Kandi, Telangana 502285, India
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28
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Li C, Qiu Y, Li R, Li M, Qin Z, Yin X. Preparation of poly (N-isopropylacrylamide)/polycaprolactone electrospun nanofibres as thermoresponsive drug delivery systems in wound dressing. INT J POLYM MATER PO 2021. [DOI: 10.1080/00914037.2021.2006654] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Changgui Li
- Hainan Provincial Fine Chemical Engineering Research Center, Hainan University, Haikou, Hainan, China
| | - Yuheng Qiu
- Hainan Provincial Fine Chemical Engineering Research Center, Hainan University, Haikou, Hainan, China
| | - Rongguo Li
- Hainan Provincial Fine Chemical Engineering Research Center, Hainan University, Haikou, Hainan, China
| | - Mengting Li
- Hainan Provincial Fine Chemical Engineering Research Center, Hainan University, Haikou, Hainan, China
| | - Ziyu Qin
- Hainan Provincial Fine Chemical Engineering Research Center, Hainan University, Haikou, Hainan, China
| | - Xueqiong Yin
- Hainan Provincial Fine Chemical Engineering Research Center, Hainan University, Haikou, Hainan, China
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29
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Siehr A, Flory C, Callaway T, Schumacher RJ, Siegel RA, Shen W. Implantable and Degradable Thermoplastic Elastomer. ACS Biomater Sci Eng 2021; 7:5598-5610. [PMID: 34788004 DOI: 10.1021/acsbiomaterials.1c01123] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Biodegradable and implantable materials having elastomeric properties are highly desirable for many biomedical applications. Here, we report that poly(lactide)-co-poly(β-methyl-δ-valerolactone)-co-poly(lactide) (PLA-PβMδVL-PLA), a thermoplastic triblock poly(α-ester), has combined favorable properties of elasticity, biodegradability, and biocompatibility. This material exhibits excellent elastomeric properties in both dry and aqueous environments. The elongation at break is approximately 1000%, and stretched specimens completely recover to their original shape after force is removed. The material is degradable both in vitro and in vivo; it degrades more slowly than poly(glycerol sebacate) and more rapidly than poly(caprolactone) in vivo. Both the polymer and its degradation product show high cytocompatibility in vitro. The histopathological analysis of PLA-PβMδVL-PLA specimens implanted in the gluteal muscle of rats for 1, 4, and 8 weeks revealed similar tissue responses as compared with poly(glycerol sebacate) and poly(caprolactone) controls, two widely accepted implantable polymers, suggesting that PLA-PβMδVL-PLA can potentially be used as an implantable material with favorable in vivo biocompatibility. The thermoplastic nature allows this elastomer to be readily processed, as demonstrated by the facile fabrication of the substrates with topographical cues to enhance muscle cell alignment. These properties collectively make this polymer potentially highly valuable for applications such as medical devices and tissue engineering scaffolds.
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Affiliation(s)
- Allison Siehr
- Department of Biomedical Engineering, University of Minnesota, 312 Church St. SE, 7-105 Nils Hasselmo Hall, Minneapolis, Minnesota 55455, United States
| | - Craig Flory
- Center for Translational Medicine, University of Minnesota, Phillips-Wangensteen Building 516 Delaware St. SE, MMC 367, Minneapolis, Minnesota 55455, United States
| | - Trenton Callaway
- Department of Biomedical Engineering, University of Minnesota, 312 Church St. SE, 7-105 Nils Hasselmo Hall, Minneapolis, Minnesota 55455, United States
| | - Robert J Schumacher
- Center for Translational Medicine, University of Minnesota, Phillips-Wangensteen Building 516 Delaware St. SE, MMC 367, Minneapolis, Minnesota 55455, United States.,Experimental and Clinical Pharmacology, University of Minnesota, 7-115 Weaver-Densford Hall, 308 Harvard St. SE, Minneapolis, Minnesota 55455, United States
| | - Ronald A Siegel
- Department of Biomedical Engineering, University of Minnesota, 312 Church St. SE, 7-105 Nils Hasselmo Hall, Minneapolis, Minnesota 55455, United States.,Department of Pharmaceutics, University of Minnesota, 308 Harvard St. SE, Room 9-177 Weaver Densford Hall, Minneapolis, Minnesota 55455, United States.,Institute for Engineering in Medicine, University of Minnesota, 420 Delaware St. SE, 725 Mayo Memorial Building, MMC 609, Minneapolis, Minnesota 55455, United States
| | - Wei Shen
- Department of Biomedical Engineering, University of Minnesota, 312 Church St. SE, 7-105 Nils Hasselmo Hall, Minneapolis, Minnesota 55455, United States.,Institute for Engineering in Medicine, University of Minnesota, 420 Delaware St. SE, 725 Mayo Memorial Building, MMC 609, Minneapolis, Minnesota 55455, United States
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30
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Vitamin D 3/vitamin K 2/magnesium-loaded polylactic acid/tricalcium phosphate/polycaprolactone composite nanofibers demonstrated osteoinductive effect by increasing Runx2 via Wnt/β-catenin pathway. Int J Biol Macromol 2021; 190:244-258. [PMID: 34492244 DOI: 10.1016/j.ijbiomac.2021.08.196] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 08/15/2021] [Accepted: 08/26/2021] [Indexed: 11/22/2022]
Abstract
Vitamin D3, vitamin K2, and Mg (10%, 1.25%, and 5%, w/w, respectively)-loaded PLA (12%, w/v) (TCP (5%, w/v))/PCL (12%, w/v) 1:1 (v/v) composite nanofibers (DKMF) were produced by electrospinning method (ES) and their osteoinductive effects were investigated in cell culture test. Neither pure nanofibers nor DKMF caused a significant cytotoxic effect in fibroblasts. The induction of the stem cell differentiation into osteogenic cells was observed in the cell culture with both DKMF and pure nanofibers, separately. Vitamin D3, vitamin K2, and magnesium demonstrated to support the osteogenic differentiation of mesenchymal stem cells by expressing Runx2, BMP2, and osteopontin and suppressing PPAR-γ and Sox9. Therefore, the Wnt/β-catenin signaling pathway was activated by DKMF. DKMF promoted large axonal sprouting and needle-like elongation of osteoblast cells and enhanced cellular functions such as migration, infiltration, proliferation, and differentiation after seven days of incubation using confocal laser scanning microscopy. The results showed that DKMF demonstrated sustained drug release for 144 h, tougher and stronger structure, higher tensile strength, increased water up-take capacity, decreased degradation ratio, and slightly lower Tm and Tg values compared to pure nanofibers. Consequently, DKMF is a promising treatment approach in bone tissue engineering due to its osteoinductive effects.
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Józó M, Várdai R, Hegyesi N, Móczó J, Pukánszky B. Poly-ε-Caprolactone/Halloysite Nanotube Composites for Resorbable Scaffolds: Effect of Processing Technology on Homogeneity and Electrospinning. Polymers (Basel) 2021; 13:polym13213772. [PMID: 34771328 PMCID: PMC8587687 DOI: 10.3390/polym13213772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 10/25/2021] [Accepted: 10/28/2021] [Indexed: 11/16/2022] Open
Abstract
Polycaprolactone (PCL)/halloysite composites were prepared to compare the effect of homogenization technology on the structure and properties of the composites. Halloysite content changed from 0 to 10 vol% in six steps and homogeneity was characterized by various direct and indirect methods. The results showed that the extent of aggregation depends on technology and on halloysite content; the size and number of aggregates increase with increasing halloysite content. Melt mixing results in more homogeneous composites than the simple compression of the component powders or homogenization in solution and film casting. Homogeneity and the extent of aggregation determines all properties, including functionality. The mechanical properties of the polymer deteriorate with increasing aggregation; even stiffness depends on homogeneity. Strength and deformability decreases drastically as the number and size of aggregates increase. Not only dispersed structure, but also the physical state and crystalline structure of the polymer influence homogeneity and properties. The presence of the filler affects the preparation of electrospun fiber scaffolds as well. A part of the filler is excluded from the fibers while another part forms aggregates that complicates fiber spinning and deteriorates properties. The results indicate that spinning is easier and the quality of the fibers is better if a material homogenized previously by melt mixing is used for the production of the fibers.
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Affiliation(s)
- Muriel Józó
- Laboratory of Plastics and Rubber Technology, Department of Physical Chemistry and Materials Science, Budapest University of Technology and Economics, P.O. Box 91, H-1521 Budapest, Hungary; (M.J.); (R.V.); (N.H.); (J.M.)
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, ELKH Eötvös Loránd Research Network, P.O. Box 286, H-1519 Budapest, Hungary
| | - Róbert Várdai
- Laboratory of Plastics and Rubber Technology, Department of Physical Chemistry and Materials Science, Budapest University of Technology and Economics, P.O. Box 91, H-1521 Budapest, Hungary; (M.J.); (R.V.); (N.H.); (J.M.)
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, ELKH Eötvös Loránd Research Network, P.O. Box 286, H-1519 Budapest, Hungary
| | - Nóra Hegyesi
- Laboratory of Plastics and Rubber Technology, Department of Physical Chemistry and Materials Science, Budapest University of Technology and Economics, P.O. Box 91, H-1521 Budapest, Hungary; (M.J.); (R.V.); (N.H.); (J.M.)
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, ELKH Eötvös Loránd Research Network, P.O. Box 286, H-1519 Budapest, Hungary
| | - János Móczó
- Laboratory of Plastics and Rubber Technology, Department of Physical Chemistry and Materials Science, Budapest University of Technology and Economics, P.O. Box 91, H-1521 Budapest, Hungary; (M.J.); (R.V.); (N.H.); (J.M.)
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, ELKH Eötvös Loránd Research Network, P.O. Box 286, H-1519 Budapest, Hungary
| | - Béla Pukánszky
- Laboratory of Plastics and Rubber Technology, Department of Physical Chemistry and Materials Science, Budapest University of Technology and Economics, P.O. Box 91, H-1521 Budapest, Hungary; (M.J.); (R.V.); (N.H.); (J.M.)
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, ELKH Eötvös Loránd Research Network, P.O. Box 286, H-1519 Budapest, Hungary
- Correspondence: ; Tel.: +36-(14)-632015
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Lee CH, Liu KS, Roth JG, Hung KC, Liu YW, Wang SH, Kuo CC, Liu SJ. Telmisartan Loaded Nanofibers Enhance Re-Endothelialization and Inhibit Neointimal Hyperplasia. Pharmaceutics 2021; 13:1756. [PMID: 34834171 PMCID: PMC8623288 DOI: 10.3390/pharmaceutics13111756] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 10/15/2021] [Accepted: 10/16/2021] [Indexed: 12/12/2022] Open
Abstract
Stent implantation impairs local endothelial function and may be associated with subsequent adverse cardiovascular events. Telmisartan, an angiotensin II receptor blocker that has unique peroxisome proliferator-activated-receptor-gamma-mediated effects on cardiovascular disease, has been shown to enhance endothelial function and limit neointimal hyperplasia. This study utilized hybrid biodegradable/stent nanofibers to facilitate sustained and local delivery of telmisartan to injured arterial vessels. Telmisartan and poly(d,l)-lactide-co-glycolide (PLGA) (75:25) were dissolved in hexafluoroisopropyl alcohol and electrospun into biodegradable nanofibrous tubes which were coated onto metal stents. By releasing 20% of the loaded telmisartan in 30 days, these hybrid biodegradable/stent telmisartan-loaded nanofibers increased the migration of endothelial progenitor cells in vitro, promoted endothelialization, and reduced intimal hyperplasia. As such, this work provides insights into the use of PLGA nanofibers for treating patients with an increased risk of stent restenosis.
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Affiliation(s)
- Chen-Hung Lee
- Division of Cardiology, Department of Internal Medicine, Chang Gung Memorial Hospital-Linkou, Chang Gung University College of Medicine, Taoyuan 33305, Taiwan; (K.-C.H.); (Y.-W.L.); (S.-H.W.)
| | - Kuo-Sheng Liu
- Department of Thoracic and Cardiovascular Surgery, Chang Gung Memorial Hospital, Taoyuan 33305, Taiwan;
| | - Julien George Roth
- Institute for Stem Cell Biology & Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA;
| | - Kuo-Chun Hung
- Division of Cardiology, Department of Internal Medicine, Chang Gung Memorial Hospital-Linkou, Chang Gung University College of Medicine, Taoyuan 33305, Taiwan; (K.-C.H.); (Y.-W.L.); (S.-H.W.)
| | - Yen-Wei Liu
- Division of Cardiology, Department of Internal Medicine, Chang Gung Memorial Hospital-Linkou, Chang Gung University College of Medicine, Taoyuan 33305, Taiwan; (K.-C.H.); (Y.-W.L.); (S.-H.W.)
| | - Shin-Huei Wang
- Division of Cardiology, Department of Internal Medicine, Chang Gung Memorial Hospital-Linkou, Chang Gung University College of Medicine, Taoyuan 33305, Taiwan; (K.-C.H.); (Y.-W.L.); (S.-H.W.)
| | - Chi-Ching Kuo
- Research and Development Center of Smart Textile Technology, Institute of Organic and Polymeric Materials, National Taipei University of Technology, Taipei 10608, Taiwan
| | - Shih-Jung Liu
- Department of Mechanical Engineering, Chang Gung University, Taoyuan 33302, Taiwan
- Department of Orthopedic Surgery, Chang Gung Memorial Hospital-Linkou, Taoyuan 33305, Taiwan
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Sharma D, Saha S, Satapathy BK. Recent advances in polymer scaffolds for biomedical applications. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2021; 33:342-408. [PMID: 34606739 DOI: 10.1080/09205063.2021.1989569] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The review provides insights into current advancements in electrospinning-assisted manufacturing for optimally designing biomedical devices for their prospective applications in tissue engineering, wound healing, drug delivery, sensing, and enzyme immobilization, and others. Further, the evolution of electrospinning-based hybrid biomedical devices using a combined approach of 3 D printing and/or film casting/molding, to design dimensionally stable membranes/micro-nanofibrous assemblies/patches/porous surfaces, etc. is reported. The influence of various electrospinning parameters, polymeric material, testing environment, and other allied factors on the morphological and physico-mechanical properties of electrospun (nano-/micro-fibrous) mats (EMs) and fibrous assemblies have been compiled and critically discussed. The spectrum of operational research and statistical approaches that are now being adopted for efficient optimization of electrospinning process parameters so as to obtain the desired response (physical and structural attributes) has prospectively been looked into. Further, the present review summarizes some current limitations and future perspectives for modeling architecturally novel hybrid 3 D/selectively textured structural assemblies, such as biocompatible, non-toxic, and bioresorbable mats/scaffolds/membranes/patches with apt mechanical stability, as biological substrates for various regenerative and non-regenerative therapeutic devices.
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Affiliation(s)
- Deepika Sharma
- Department of Materials Science and Engineering, Indian Institute of Technology Delhi, New Delhi, India
| | - Sampa Saha
- Department of Materials Science and Engineering, Indian Institute of Technology Delhi, New Delhi, India
| | - Bhabani K Satapathy
- Department of Materials Science and Engineering, Indian Institute of Technology Delhi, New Delhi, India
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Yadav BK, Patel G. Mechanical properties and biodegradability of electrospun methylcellulose-polyvinylalcohol single-layered nanofibers compared to polycaprolactone/methylcellulose-polyvinylalcohol/polycaprolactone multilayered nanofibers. INT J POLYM MATER PO 2021. [DOI: 10.1080/00914037.2021.1985492] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Bindu Kumari Yadav
- Department of Pharmaceutics & Pharmaceutical Technology, CHARUSAT Campus, Charotar University of Science and Technology, Ramanbhai Patel College of Pharmacy, Changa, India
| | - Gayatri Patel
- Department of Pharmaceutics & Pharmaceutical Technology, CHARUSAT Campus, Charotar University of Science and Technology, Ramanbhai Patel College of Pharmacy, Changa, India
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Sulfated alginate/polycaprolactone double-emulsion nanoparticles for enhanced delivery of heparin-binding growth factors in wound healing applications. Colloids Surf B Biointerfaces 2021; 208:112105. [PMID: 34536674 DOI: 10.1016/j.colsurfb.2021.112105] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 08/27/2021] [Accepted: 09/04/2021] [Indexed: 11/22/2022]
Abstract
Diabetic foot ulcers (DFUs) that are not effectively treated could lead to partial or complete lower limb amputations. The lack of connective tissue growth factor (CTGF) and insulin-like growth factor (IGF-I) in DFUs results in limited matrix deposition and poor tissue repair. To enhance growth factor (GF) availability in DFUs, heparin (HN)-mimetic alginate sulfate/polycaprolactone (AlgSulf/PCL) double emulsion nanoparticles (NPs) with high affinity and sustained release of CTGF and IGF-I were synthesized. The NPs size, encapsulation efficiency (EE), cytotoxicity, cellular uptake and wound healing capacity in immortalized primary human adult epidermal cells (HaCaT) were assessed. The sonication time and amplitude used for NPs synthesis enabled the production of particles with a minimum of 236 ± 25 nm diameter. Treatment of HaCaT cells with up to 50 μg mL-1 of NPs showed no cytotoxic effects after 72 h. The highest bovine serum albumin EE (94.6 %, P = 0.028) and lowest burst release were attained with AlgSulf/PCL. Moreover, cells treated with AlgSulf/CTGF (250 ng mL-1) exhibited the most rapid wound closure compared to controls while maintaining fibronectin synthesis. Double-emulsion NPs based on HN-mimetic AlgSulf represent a novel approach which can significantly enhance diabetic wound healing and can be expanded for applications requiring the delivery of other HN-binding GFs.
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Release behaviors and kinetics of coated bead‐on‐string nanofibrous multilayer membranes loaded with drug particles. POLYM INT 2021. [DOI: 10.1002/pi.6214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Chaiarwut S, Ekabutr P, Chuysinuan P, Chanamuangkon T, Supaphol P. Surface immobilization of PCL electrospun nanofibers with pexiganan for wound dressing. JOURNAL OF POLYMER RESEARCH 2021. [DOI: 10.1007/s10965-021-02669-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Mirzaeei S, Mansurian M, Asare-Addo K, Nokhodchi A. Metronidazole- and Amoxicillin-Loaded PLGA and PCL Nanofibers as Potential Drug Delivery Systems for the Treatment of Periodontitis: In Vitro and In Vivo Evaluations. Biomedicines 2021; 9:biomedicines9080975. [PMID: 34440179 PMCID: PMC8395018 DOI: 10.3390/biomedicines9080975] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 08/03/2021] [Accepted: 08/04/2021] [Indexed: 11/16/2022] Open
Abstract
The purpose of this study was to prepare poly (D-L) lactide-co-glycolide (PLGA) and poly ε-caprolactone (PCL) nanofibers containing metronidazole and amoxicillin using an electrospinning process as intrapocket sustained-release drug delivery systems for the treatment of periodontal diseases. Scanning electron microscopy showed that the drug containing PLGA and PCL nanofibers produced from the electrospinning process was uniform and bead-free in morphology. The obtained nanofibers had a strong structure and resisted external tension according to the tensiometry results. The cytotoxicity results indicated acceptable cell viability (>80%). Quantification by high-performance liquid chromatography showed almost complete in vitro drug release between 7 and 9 days, whereas 14 days were required for complete drug release in vivo. No significant signs of irritation or inflammatory reaction were detected after three weeks of subcutaneous implantation of nanofibers in the animal models, thus indicating suitable compatibility. The results therefore suggest that the designed nanofibers can be used as potential commercial formulations in the treatment of periodontitis as controlled-release intrapocket drug delivery systems that can increase patient compliance. This is due to their ability to reduce the frequency of administration from three times daily in a systemic manner to once weekly as local delivery.
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Affiliation(s)
- Shahla Mirzaeei
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah 6715847141, Iran
- Nano Drug Delivery Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah 6715847141, Iran
- Correspondence: (S.M.); (A.N.); Tel.: +98-8334266780 (S.M.); +44-1273872811 (A.N.)
| | - Mahla Mansurian
- Student Research Committee, Kermanshah University of Medical Sciences, Kermanshah 6715847141, Iran;
| | - Kofi Asare-Addo
- Department of Pharmacy, University of Huddersfield, Huddersfield HD1 3DH, UK;
| | - Ali Nokhodchi
- Pharmaceutics Research Laboratory, School of Life Sciences, University of Sussex, Brighton BN1 9RH, UK
- Correspondence: (S.M.); (A.N.); Tel.: +98-8334266780 (S.M.); +44-1273872811 (A.N.)
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Liu X, Chen M, Luo J, Zhao H, Zhou X, Gu Q, Yang H, Zhu X, Cui W, Shi Q. Immunopolarization-regulated 3D printed-electrospun fibrous scaffolds for bone regeneration. Biomaterials 2021; 276:121037. [PMID: 34325336 DOI: 10.1016/j.biomaterials.2021.121037] [Citation(s) in RCA: 63] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2021] [Revised: 07/19/2021] [Accepted: 07/21/2021] [Indexed: 12/12/2022]
Abstract
Three-dimension (3D)-printed bioscaffolds are precise and personalized for bone regeneration. However, customized 3D scaffolds may activate the immune response in vivo and consequently impede bone formation. In this study, with layer-by-layer deposition and electrospinning technology to control the physical structure, 3D-printed PCL scaffolds with PLLA electrospun microfibrous (3D-M-EF) and nanofibrous (3D-N-EF) composites were constructed, and their immunomodulatory effect and the subsequent osteogenic effects were explored. Compared to 3D-N-EF scaffolds, 3D-M-EF scaffolds polarized more RAW264.7 cells toward alternatively activated macrophages (M2), as demonstrated by increased M2 and deceased classically activated macrophage (M1) phenotypic marker expression in the cells. In addition, the 3D-M-EF scaffolds shifted RAW264.7 cells to the M2 phenotype through PI3K/AKT signaling and enhanced VEGF and BMP-2 expression. Conditional medium from the RAW264.7 cells seeded in 3D-M-EF scaffolds promoted osteogenesis of MC3T3-E1 cells. Furthermore, in vivo study of repairing rat calvarial defects, the 3D-M-EF scaffolds increased the polarization of M2 macrophages, enhanced angiogenesis, and accelerated new bone formation. Collectively, our data suggested that well-designed 3D-M-EF scaffolds are favorable for osteogenesis through regulation of M2 polarization. Therefore, it is potential to utilize the physical structure of 3D-printed scaffolds to manipulate the osteoimmune environment to promote bone regeneration.
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Affiliation(s)
- Xingzhi Liu
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, Medical College of Soochow University, Orthopedic Institute of Soochow University, 708 Renmin Road, Suzhou, Jiangsu, 215007, PR China; School of Nano-Tech and Nano-Bionics, University of Science and Technology of China, 388 Ruoshui Road, Suzhou, Jiangsu, 215123, PR China; University of Science and Technology of China, 96 Jinzai Road, Hefei, Anhui, 230026, PR China
| | - Mimi Chen
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, Medical College of Soochow University, Orthopedic Institute of Soochow University, 708 Renmin Road, Suzhou, Jiangsu, 215007, PR China
| | - Junchao Luo
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, Medical College of Soochow University, Orthopedic Institute of Soochow University, 708 Renmin Road, Suzhou, Jiangsu, 215007, PR China
| | - Huan Zhao
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, Medical College of Soochow University, Orthopedic Institute of Soochow University, 708 Renmin Road, Suzhou, Jiangsu, 215007, PR China
| | - Xichao Zhou
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, Medical College of Soochow University, Orthopedic Institute of Soochow University, 708 Renmin Road, Suzhou, Jiangsu, 215007, PR China
| | - Qiaoli Gu
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, Medical College of Soochow University, Orthopedic Institute of Soochow University, 708 Renmin Road, Suzhou, Jiangsu, 215007, PR China
| | - Huilin Yang
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, Medical College of Soochow University, Orthopedic Institute of Soochow University, 708 Renmin Road, Suzhou, Jiangsu, 215007, PR China
| | - Xuesong Zhu
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, Medical College of Soochow University, Orthopedic Institute of Soochow University, 708 Renmin Road, Suzhou, Jiangsu, 215007, PR China.
| | - Wenguo Cui
- Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai, 200025, PR China.
| | - Qin Shi
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, Medical College of Soochow University, Orthopedic Institute of Soochow University, 708 Renmin Road, Suzhou, Jiangsu, 215007, PR China.
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Zhou FL, McHugh DJ, Li Z, Gough JE, Williams GR, Parker GJM. Coaxial electrospun biomimetic copolymer fibres for application in diffusion magnetic resonance imaging. BIOINSPIRATION & BIOMIMETICS 2021; 16:046016. [PMID: 33706299 DOI: 10.1088/1748-3190/abedcf] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Accepted: 03/11/2021] [Indexed: 06/12/2023]
Abstract
Objective. The use of diffusion magnetic resonance imaging (dMRI) opens the door to characterizing brain microstructure because water diffusion is anisotropic in axonal fibres in brain white matter and is sensitive to tissue microstructural changes. As dMRI becomes more sophisticated and microstructurally informative, it has become increasingly important to use a reference object (usually called an imaging phantom) for validation of dMRI. This study aims to develop axon-mimicking physical phantoms from biocopolymers and assess their feasibility for validating dMRI measurements.Approach. We employed a simple and one-step method-coaxial electrospinning-to prepare axon-mimicking hollow microfibres from polycaprolactone-b-polyethylene glycol (PCL-b-PEG) and poly(D, L-lactide-co-glycolic) acid (PLGA), and used them as building elements to create axon-mimicking phantoms. Electrospinning was firstly conducted using two types of PCL-b-PEG and two types of PLGA with different molecular weights in various solvents, with different polymer concentrations, for determining their spinnability. Polymer/solvent concentration combinations with good fibre spinnability were used as the shell material in the following co-electrospinning process in which the polyethylene oxide polymer was used as the core material. Following the microstructural characterization of both electrospun and co-electrospun fibres using optical and electron microscopy, two prototype phantoms were constructed from co-electrospun anisotropic hollow microfibres after inserting them into water-filled test tubes.Main results. Hollow microfibres that mimic the axon microstructure were successfully prepared from the appropriate core and shell material combinations. dMRI measurements of two phantoms on a 7 tesla (T) pre-clinical scanner revealed that diffusivity and anisotropy measurements are in the range of brain white matter.Significance. This feasibility study showed that co-electrospun PCL-b-PEG and PLGA microfibre-based axon-mimicking phantoms could be used in the validation of dMRI methods which seek to characterize white matter microstructure.
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Affiliation(s)
- Feng-Lei Zhou
- Centre for Medical Image Computing, Department of Computer Science, University College London, London WC1V 6LJ, United Kingdom
- UCL School of Pharmacy, University College London, London WC1N 1AX, United Kingdom
| | - Damien J McHugh
- Quantitative Biomedical Imaging Laboratory, The University of Manchester, Manchester M13 9PL, United Kingdom
| | - Zhanxiong Li
- College of Textile and Clothing Engineering, Soochow University, Suzhou 215021, People's Republic of China
| | - Julie E Gough
- Department of Materials and Henry Royce Institute, The University of Manchester, Manchester M13 9PL, United Kingdom
| | - Gareth R Williams
- UCL School of Pharmacy, University College London, London WC1N 1AX, United Kingdom
| | - Geoff J M Parker
- Centre for Medical Image Computing, Department of Computer Science, University College London, London WC1V 6LJ, United Kingdom
- Bioxydyn Limited, Manchester, United Kingdom
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Abbasnezhad N, Zirak N, Shirinbayan M, Tcharkhtchi A, Bakir F. On the importance of physical and mechanical properties of PLGA films during drug release. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2021.102446] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Chandrashekhar P, Minooei F, Arreguin W, Masigol M, Steinbach-Rankins JM. Perspectives on Existing and Novel Alternative Intravaginal Probiotic Delivery Methods in the Context of Bacterial Vaginosis Infection. AAPS J 2021; 23:66. [PMID: 33973067 PMCID: PMC8356663 DOI: 10.1208/s12248-021-00602-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Accepted: 04/27/2021] [Indexed: 12/17/2022] Open
Abstract
Bacterial vaginosis (BV) is one of the most common vaginal infections that affects hundreds of millions of women of reproductive age, worldwide. Traditional treatment strategies, such as oral and topical antibiotics, have shown efficacy against BV, but frequent recurrence of infection and the development of antibiotic-resistant bacteria remain as significant challenges. Alternatively, recent progress in understanding immune, microbiological, and metabolic interactions in the vaginal microbiota has prompted the consideration of administering probiotic organisms to restore and maintain vaginal health within the context of BV prevention and treatment. Given this, the objective of this review is to discuss existing and potential alternative approaches to deliver, and to potentially sustain the delivery of probiotics, to prevent and/or treat BV infections. First, a brief overview is provided regarding the probiotic species and combinatorial probiotic strategies that have shown promise in the treatment of BV and in restoring female reproductive health. Additionally, the advantages and challenges associated with current oral and intravaginal probiotic delivery platforms are discussed. Lastly, we present emerging and promising alternative dosage forms, such as electrospun fibers and 3D bioprinted scaffolds, that may be adapted as new strategies to intravaginally deliver probiotic organisms. Graphical abstract.
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Affiliation(s)
| | - Farnaz Minooei
- Department of Chemical Engineering, University of Louisville Speed School of Engineering, Louisville, Kentucky, USA
- Center for Predictive Medicine, University of Louisville, Louisville, Kentucky, USA
| | - Wenndy Arreguin
- Department of Bioengineering, University of Louisville Speed School of Engineering, 505 S. Hancock St., Room 623, Louisville, Kentucky, 40202, USA
| | - Mohammadali Masigol
- Center for Predictive Medicine, University of Louisville, Louisville, Kentucky, USA
- Department of Bioengineering, University of Louisville Speed School of Engineering, 505 S. Hancock St., Room 623, Louisville, Kentucky, 40202, USA
| | - Jill M Steinbach-Rankins
- Center for Predictive Medicine, University of Louisville, Louisville, Kentucky, USA.
- Department of Bioengineering, University of Louisville Speed School of Engineering, 505 S. Hancock St., Room 623, Louisville, Kentucky, 40202, USA.
- Department of Microbiology and Immunology, University of Louisville School of Medicine, Louisville, Kentucky, USA.
- Department of Pharmacology and Toxicology, University of Louisville School of Medicine, Louisville, Kentucky, USA.
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Kim CR, Jang EB, Hong SH, Yoon YE, Huh BK, Kim SN, Kim MJ, Moon HS, Choy YB. Indwelling urinary catheter assembled with lidocaine-loaded polymeric strand for local sustained alleviation of bladder discomfort. Bioeng Transl Med 2021; 6:e10218. [PMID: 34027100 PMCID: PMC8126825 DOI: 10.1002/btm2.10218] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 03/10/2021] [Accepted: 03/14/2021] [Indexed: 01/03/2023] Open
Abstract
Indwelling urinary catheters (IUCs) are used in clinical settings to assist detrusor contraction in hospitalized patients. However, an inserted IUC often causes catheter-related bladder discomfort. To resolve this, we propose an IUC coupled with local, sustained release of an anesthetic drug, lidocaine. For this, a thin strand composed of poly (lactic-co-glycolic acid) and lidocaine was separately prepared as a drug delivery carrier, which was then wound around the surface of the IUC to produce the drug-delivery IUC. Our results revealed that the drug-delivery IUC could exert the pain-relief effects for up to 7 days when placed in the bladder of living rats. Cystometrogram tests indicated that the drug-delivery IUC could significantly relieve bladder discomfort compared with the IUC without lidocaine. Furthermore, the expression of pain-related inflammatory markers, such as nerve growth factor, cyclooxygenase-2, and interleukin-6 in the biopsied bladder tissues was significantly lower when the drug-delivery IUC was used. Therefore, we conclude that an IUC simply assembled with a drug-loaded polymer strand can continuously release lidocaine to allow for the relief of bladder discomfort during the period of IUC insertion.
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Affiliation(s)
- Cho Rim Kim
- Interdisciplinary Program for Bioengineering, College of EngineeringSeoul National UniversitySeoulRepublic of Korea
| | - Eun Bi Jang
- Department of Urology, College of MedicineHanyang UniversitySeoulRepublic of Korea
- Department of Translational Medicine, Graduate School of Biomedical Science & EngineeringHanyang UniversitySeoulRepublic of Korea
| | - Seong Hwi Hong
- Department of Urology, College of MedicineHanyang UniversitySeoulRepublic of Korea
| | - Young Eun Yoon
- Department of Urology, College of MedicineHanyang UniversitySeoulRepublic of Korea
| | - Beom Kang Huh
- Interdisciplinary Program for Bioengineering, College of EngineeringSeoul National UniversitySeoulRepublic of Korea
| | - Se Na Kim
- Institute of Medical & Biological Engineering, Medical Research CenterSeoul National UniversitySeoulRepublic of Korea
| | - Min Ji Kim
- Interdisciplinary Program for Bioengineering, College of EngineeringSeoul National UniversitySeoulRepublic of Korea
| | - Hong Sang Moon
- Department of Urology, College of MedicineHanyang UniversitySeoulRepublic of Korea
| | - Young Bin Choy
- Interdisciplinary Program for Bioengineering, College of EngineeringSeoul National UniversitySeoulRepublic of Korea
- Institute of Medical & Biological Engineering, Medical Research CenterSeoul National UniversitySeoulRepublic of Korea
- Department of Biomedical EngineeringSeoul National University, College of MedicineSeoulRepublic of Korea
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Sharma D, Satapathy BK. Optimally controlled morphology and physico-mechanical properties of inclusion complex loaded electrospun polyvinyl alcohol based nanofibrous mats for therapeutic applications. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2021; 32:1182-1202. [PMID: 33765899 DOI: 10.1080/09205063.2021.1909414] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Hydrophilic polyvinyl alcohol (PVA) based electrospun nanofibrous mats (ENMs) are recently being used for the designing and fabrication of active wound dressing materials. Thus, in this study an inclusion complex (IC) of curcumin (CUR) and β-cyclodextrin (β-CD) was optimally incorporated in electrospun PVA nanofibers, to obtain uniform bead-free nanofibers with minimum average diameter and variation using Taguchi's design of experiments (DOE). The optimum level parameters were ascertained using Taguchi's methodology, to obtain IC loaded PVA based bead-free ENMs, by varying IC (∼20, ∼40, and ∼60 wt.%) loading, applied voltage, solution concentration, and N, N-dimethylformamide (DMF) content in the electrospinning solution mixture. Validation experiments revealed a good agreement between the predicted and experimental values of fiber diameter, diameter-variation, and bead-numbers. Analysis of variance (ANOVA) showed a major influence of IC loading on the average fiber diameter and the number of bead defects, for IC-loaded PVA based ENMs. However, the DMF content of the solvent mixture significantly influenced the diameter variations of ENMs. The surface morphologies of ENMs were analyzed using Scanning Electron Microscopy (SEM) whereas the microstructural aspects were studied by Wide-Angle X-ray Diffraction (WAXD) and Fourier transform infrared (FT-IR) spectroscopy. The thermal properties were characterized by differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) whereas the mechanical properties were measured by using uniaxial tensile testing and dynamic mechanical analysis (DMA). The variation in properties of IC loaded PVA based ENMs were correlated with neat PVA based ENMs fabricated using a similar set of optimized electrospinning process parameters. The study conceptually demonstrated the optimal designing of structurally-engineered hydrophilic IC loaded PVA based ENMs by using the Taguchi approach based on orthogonal DOE as potential drug release substrates.
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Affiliation(s)
- Deepika Sharma
- Department of Materials Science and Engineering, Indian Institute of Technology Delhi, New Delhi, India
| | - Bhabani K Satapathy
- Department of Materials Science and Engineering, Indian Institute of Technology Delhi, New Delhi, India
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Makvandi P, Kirkby M, Hutton ARJ, Shabani M, Yiu CKY, Baghbantaraghdari Z, Jamaledin R, Carlotti M, Mazzolai B, Mattoli V, Donnelly RF. Engineering Microneedle Patches for Improved Penetration: Analysis, Skin Models and Factors Affecting Needle Insertion. NANO-MICRO LETTERS 2021; 13:93. [PMID: 34138349 PMCID: PMC8006208 DOI: 10.1007/s40820-021-00611-9] [Citation(s) in RCA: 126] [Impact Index Per Article: 42.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Accepted: 01/05/2021] [Indexed: 05/14/2023]
Abstract
Transdermal microneedle (MN) patches are a promising tool used to transport a wide variety of active compounds into the skin. To serve as a substitute for common hypodermic needles, MNs must pierce the human stratum corneum (~ 10 to 20 µm), without rupturing or bending during penetration. This ensures that the cargo is released at the predetermined place and time. Therefore, the ability of MN patches to sufficiently pierce the skin is a crucial requirement. In the current review, the pain signal and its management during application of MNs and typical hypodermic needles are presented and compared. This is followed by a discussion on mechanical analysis and skin models used for insertion tests before application to clinical practice. Factors that affect insertion (e.g., geometry, material composition and cross-linking of MNs), along with recent advancements in developed strategies (e.g., insertion responsive patches and 3D printed biomimetic MNs using two-photon lithography) to improve the skin penetration are highlighted to provide a backdrop for future research.
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Affiliation(s)
- Pooyan Makvandi
- Istituto Italiano Di Tecnologia, Centre for Materials Interface, Viale Rinaldo Piaggio 34, 56025, Pontedera, Pisa, Italy.
| | - Melissa Kirkby
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast, BT9 7BL, UK
| | - Aaron R J Hutton
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast, BT9 7BL, UK
| | - Majid Shabani
- Istituto Italiano Di Tecnologia, Centre for Materials Interface, Viale Rinaldo Piaggio 34, 56025, Pontedera, Pisa, Italy
- The BioRobotics Institute, Scuola Superiore Sant'Anna, Viale Rinaldo Piaggio 34, 56025, Pontedera, Pisa, Italy
| | - Cynthia K Y Yiu
- Paediatric Dentistry and Orthodontics, Faculty of Dentistry, The University of Hong Kong, Prince Philip Dental Hospital, Hong Kong SAR, China
| | - Zahra Baghbantaraghdari
- Department of Chemical, Materials and Industrial Production Engineering, University of Naples Federico II, 80125, Naples, Italy
| | - Rezvan Jamaledin
- Department of Chemical, Materials and Industrial Production Engineering, University of Naples Federico II, 80125, Naples, Italy
- Center for Advanced Biomaterials for Health Care (iit@CRIB), Italian Institute of Technology, 80125, Naples, Italy
| | - Marco Carlotti
- Istituto Italiano Di Tecnologia, Centre for Materials Interface, Viale Rinaldo Piaggio 34, 56025, Pontedera, Pisa, Italy
| | - Barbara Mazzolai
- Istituto Italiano Di Tecnologia, Centre for Materials Interface, Viale Rinaldo Piaggio 34, 56025, Pontedera, Pisa, Italy
| | - Virgilio Mattoli
- Istituto Italiano Di Tecnologia, Centre for Materials Interface, Viale Rinaldo Piaggio 34, 56025, Pontedera, Pisa, Italy.
| | - Ryan F Donnelly
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast, BT9 7BL, UK.
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Asiri A, Saidin S, Sani MH, Al-Ashwal RH. Epidermal and fibroblast growth factors incorporated polyvinyl alcohol electrospun nanofibers as biological dressing scaffold. Sci Rep 2021; 11:5634. [PMID: 33707606 PMCID: PMC7970974 DOI: 10.1038/s41598-021-85149-x] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Accepted: 02/22/2021] [Indexed: 02/07/2023] Open
Abstract
In this study, single, mix, multilayer Polyvinyl alcohol (PVA) electrospun nanofibers with epidermal growth factor (EGF) and fibroblast growth factor (FGF) were fabricated and characterized as a biological wound dressing scaffolds. The biological activities of the synthesized scaffolds have been verified by in vitro and in vivo studies. The chemical composition finding showed that the identified functional units within the produced nanofibers (O-H and N-H bonds) are attributed to both growth factors (GFs) in the PVA nanofiber membranes. Electrospun nanofibers' morphological features showed long protrusion and smooth morphology without beads and sprayed with an average range of 198-286 nm fiber diameter. The fiber diameters decrement and the improvement in wettability and surface roughness were recorded after GFs incorporated within the PVA Nanofibers, which indicated potential good adoption as biological dressing scaffolds due to the identified mechanical properties (Young's modulus) in between 18 and 20 MPa. The MTT assay indicated that the growth factor release from the PVA nanofibers has stimulated cell proliferation and promoted cell viability. In the cell attachment study, the GFs incorporated PVA nanofibers stimulated cell proliferation and adhered better than the PVA control sample and presented no cytotoxic effect. The in vivo studies showed that compared to the control and single PVA-GFs nanofiber, the mix and multilayer scaffolds gave a much more wound reduction at day 7 with better wound repair at day 14-21, which indicated to enhancing tissue regeneration, thus, could be a projected as a suitable burn wound dressing scaffold.
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Affiliation(s)
- Amnah Asiri
- Department of Biosciences, Faculty of Science, Universiti Teknologi Malaysia, 81310, Johor Bahru, Johor, Malaysia
| | - Syafiqah Saidin
- IJN-UTM Cardiovascular Engineering Centre, Institute of Human Centered Engineering, Universiti Teknologi Malaysia, 81310, Johor Bahru, Johor, Malaysia
| | - Mohd Helmi Sani
- Department of Biosciences, Faculty of Science, Universiti Teknologi Malaysia, 81310, Johor Bahru, Johor, Malaysia
| | - Rania Hussien Al-Ashwal
- Department of Clinical Sciences, School of Biomedical Engineering and Health Science, Universiti Teknologi Malaysia, 81310, Johor Bahru, Johor, Malaysia.
- Advanced Diagnostics and Progressive Human Care (Diagnostic) Research Group, Health and Wellness Research Alliance, Universiti Teknologi Malaysia, 81310, Johor Bahru, Johor, Malaysia.
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47
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Fabrication and characterization of core–shell TiO2-containing nanofibers of PCL-zein by coaxial electrospinning method as an erythromycin drug carrier. Polym Bull (Berl) 2021. [DOI: 10.1007/s00289-021-03591-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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48
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Eren Boncu T, Ozdemir N. Electrospinning of ampicillin trihydrate loaded electrospun PLA nanofibers I: effect of polymer concentration and PCL addition on its morphology, drug delivery and mechanical properties. INT J POLYM MATER PO 2021. [DOI: 10.1080/00914037.2021.1876057] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Tugba Eren Boncu
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Erciyes University, Kayseri, Turkey
| | - Nurten Ozdemir
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Ankara University, Ankara, Turkey
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49
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Electrospun Scaffolds in Periodontal Wound Healing. Polymers (Basel) 2021; 13:polym13020307. [PMID: 33478155 PMCID: PMC7835852 DOI: 10.3390/polym13020307] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 01/13/2021] [Accepted: 01/14/2021] [Indexed: 01/25/2023] Open
Abstract
Periodontitis is a set of inflammatory conditions affecting the tissues surrounding the teeth predominantly sustained by bacterial infections. The aim of the work was the design and the development of scaffolds based on biopolymers to be inserted in the periodontal pocket to restore tissue integrity and to treat bacterial infections. Nanofibrous scaffolds were prepared by means of electrospinning. Gelatin was considered as base component and was associated to low and high molecular weight chitosans and alginate. The scaffolds were characterized by chemico–physical properties (morphology, solid state-FTIR and differential scanning calorimetry (DSC)-surface zeta potential and contact angle), and mechanical properties. Moreover, preclinical properties (cytocompatibility, fibroblast and osteoblast adhesion and proliferation and antimicrobial properties) were assessed. All the scaffolds were based on cylindrical and smooth nanofibers and preserved their nanofibrous structure upon hydration independently of their composition. They possessed a high degree of hydrophilicity and negative zeta potentials in a physiological environment, suitable surface properties to enhance cell adhesion and proliferation and to inhibit bacteria attachment. The scaffold based on gelatin and low molecular weight chitosan proved to be effective in vitro to support both fibroblasts and osteoblasts adhesion and proliferation and to impair the proliferation of Streptococcus mutans and Aggregatibacter actinomycetemcomitans, both pathogens involved in periodontitis.
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50
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Liu X, Chen B, Li Y, Kong Y, Gao M, Zhang LZ, Gu N. Development of an electrospun polycaprolactone/silk scaffold for potential vascular tissue engineering applications. J BIOACT COMPAT POL 2020. [DOI: 10.1177/0883911520973244] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Long-distance (⩾10 mm) arterial vascular defect injury was a massive challenge affecting human health. Compared with autologous transplantation, tissue-engineered scaffolds such as biocompatible silk fibroin (SF) scaffolds have been developed because they exhibit equivalent functional repair effects without adverse reactions. However, its mechanical strength and structural stability needed to be further improved to match the longer repair cycle of blood vessels while maintaining the original biological safety. Hence, we designed and prepared SF and hydrophobic polycaprolactone (PCL) composite microfibers by an improving electrospinning method. It was found that when the weight ratio of PCL to SF was 1: 1, a microfiber scaffold with high strength (6.16 N) and minimum degradability can be obtained. More importantly, compared with natural silk fibroin, the novel composite microfiber scaffolds can slightly inhibit cell infiltration and inflammation through co-culture with HUVECs in vitro and rabbit back transplantation in vivo. Furthermore, the fabricated scaffolds also demonstrated excellent structural stability in vivo because of the well-organized PCL doping in the structure. All these results indicated that the novel PCL/SF composite microfiber scaffolds were promising candidates for vascular tissue engineering applications.
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Affiliation(s)
- Xin Liu
- State Key Laboratory of Bioeletronics, Jiangsu Key Laboratory for Biomaterials and Devices, School of Biological Science & Medical Engineering, Southeast University, Nanjing, P. R. China
| | - Bo Chen
- Materials Science and Devices Institute, Suzhou University of Science and Technology, Suzhou, Jiangsu, P. R. China
| | - Yan Li
- State Key Laboratory of Bioeletronics, Jiangsu Key Laboratory for Biomaterials and Devices, School of Biological Science & Medical Engineering, Southeast University, Nanjing, P. R. China
| | - Yan Kong
- Jiangsu Key Laboratory of Neuroregeneration, Nantong University, Nantong, P. R. China
- Co-innovation Center of Neuroregeneration, Nantong, Jiangsu Province, P. R. China
| | - Ming Gao
- Jiangsu Key Laboratory of Neuroregeneration, Nantong University, Nantong, P. R. China
- Co-innovation Center of Neuroregeneration, Nantong, Jiangsu Province, P. R. China
| | - Lu Zhong Zhang
- Jiangsu Key Laboratory of Neuroregeneration, Nantong University, Nantong, P. R. China
- Co-innovation Center of Neuroregeneration, Nantong, Jiangsu Province, P. R. China
| | - Ning Gu
- State Key Laboratory of Bioeletronics, Jiangsu Key Laboratory for Biomaterials and Devices, School of Biological Science & Medical Engineering, Southeast University, Nanjing, P. R. China
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