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Qosim N, Majd H, Huo S, Edirisinghe M, Williams GR. Hydrophilic and hydrophobic drug release from core (polyvinylpyrrolidone)-sheath (ethyl cellulose) pressure-spun fibers. Int J Pharm 2024; 654:123972. [PMID: 38458404 DOI: 10.1016/j.ijpharm.2024.123972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Revised: 03/03/2024] [Accepted: 03/03/2024] [Indexed: 03/10/2024]
Abstract
A core-sheath structure is one of the methods developed to overcome the challenges often faced when using monolithic fibers for drug delivery. In this study, fibers based on polyvinylpyrrolidone (core) and ethyl cellulose (sheath) were successfully produced using a novel core-sheath pressure-spinning process. For comparison, these two polymers were also processed into as blend fibers. All samples were then investigated for their performances in releasing water-soluble ampicillin (AMP) and poorly water-soluble ibuprofen (IBU) model drugs. Scanning electron,digital and confocal microscopy confirmed that fibers with a core-sheath structure were successfully made. Fourier transform infrared spectroscopy showed the success of the pressure-spinning technique in encapsulating AMP/IBU in all fiber samples. Compared to blend fibers, the core-sheath fibers had better performance in encapsulating both water-soluble and poorly water-soluble drugs. Moreover, the core-sheath structure was able to reduce the initial burst release and provided a better sustained release profile than the blend fiber analog. In conclusion, the pressure-spinning method was capable of producing core-sheath and blend fibers that could be used for the loading of either hydrophilic or hydrophobic drugs for controlled drug delivery systems.
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Affiliation(s)
- Nanang Qosim
- Department of Mechanical Engineering, University College London, London WC1E 7JE, UK; UCL School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, UK; Department of Mechanical Engineering, Politeknik Negeri Malang, Jl. Soekarno Hatta No.9, Malang 65141, Jawa Timur, Indonesia
| | - Hamta Majd
- Department of Mechanical Engineering, University College London, London WC1E 7JE, UK
| | - Suguo Huo
- London Centre for Nanotechnology, 17-19 Gordon Street, London WC1H 0AH, UK
| | - Mohan Edirisinghe
- Department of Mechanical Engineering, University College London, London WC1E 7JE, UK
| | - Gareth R Williams
- UCL School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, UK.
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Zandi N, Lotfi R, Tamjid E, Shokrgozar MA, Simchi A. Core-sheath gelatin based electrospun nanofibers for dual delivery release of biomolecules and therapeutics. Mater Sci Eng C Mater Biol Appl 2019; 108:110432. [PMID: 31923974 DOI: 10.1016/j.msec.2019.110432] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2019] [Revised: 10/27/2019] [Accepted: 11/13/2019] [Indexed: 02/06/2023]
Abstract
Coaxial electrospinning with the ability to use simultaneously two separate solvents provides a promising strategy for drug delivery. Nevertheless, controlled release of hydrophilic and sensitive therapeutics from slow biodegradable polymers is still challenging. To address this gap, we fabricated core-sheath fibers for dual delivery of lysozyme, as a model protein, and phenytoin sodium as a small therapeutic molecule. The sheath was processed by a gelatin solution while the core fibers were fabricated from an aqueous gelatin/PVA solution. Microstructural studies by transmission and scanning electron microscopy reveal the formation of homogeneous core-sheath nanofibers with an outer and inner diameter of 180 ± 48 nm and 106 ± 30 nm, respectively. Thermal gravimetric analysis determines that the mass loss of the core-sheath fibers fall between the mass loss values of individual sheath and core fibers. Swelling studies indicate higher water absorption of the core-sheath mat compared to the separate sheath and core membranes. In vitro drug release studies in Phosphate Buffered Saline (PBS) determine sustained release of the therapeutics from the core-sheath structure. The release trails three stages including non-Fickian diffusion at the early stage followed by the Fickian diffusion mechanism. The present study shows a useful approach to design core-sheath nanofibrous membranes with controlled and programmable drug release profiles.
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Affiliation(s)
- Nooshin Zandi
- Institute for Nanoscience and Nanotechnology, Sharif University of Technology, P.O. Box 11365-11155, Tehran, Iran
| | - Roya Lotfi
- Institute for Nanoscience and Nanotechnology, Sharif University of Technology, P.O. Box 11365-11155, Tehran, Iran
| | - Elnaz Tamjid
- Department of Nanobiotechnology, Faculty of Biological Sciences, Tarbiat Modares University, P.O. Box 14115-175, Tehran, Iran
| | | | - Abdolreza Simchi
- Institute for Nanoscience and Nanotechnology, Sharif University of Technology, P.O. Box 11365-11155, Tehran, Iran; Department of Materials Science and Engineering, Sharif University of Technology, P.O. Box 11365-11155, Tehran, Iran.
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Fu X, Liang Y, Wu R, Shen J, Chen Z, Chen Y, Wang Y, Xia Y. Conductive core-sheath calcium alginate/graphene composite fibers with polymeric ionic liquids as an intermediate. Carbohydr Polym 2018; 206:328-335. [PMID: 30553329 DOI: 10.1016/j.carbpol.2018.11.021] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 11/07/2018] [Accepted: 11/07/2018] [Indexed: 10/27/2022]
Abstract
In this study, polymeric ionic liquid (PIL) was synthesized and used in the wet spinning of calcium alginate (CaAlg) fiber. PIL was used as an intermediate to coat graphene with outer layer of CaAlg fiber to obtain conductive core-sheath CaAlg/Graphene (CaAlg/G-PIL) fibers. This proposed blend enhances the properties of the fiber due to the π-π and cation-π interactions between PIL and graphene, and the electrostatic interactions between PIL and CaAlg. The composition and chemical structure of the composite fibers were characterized by infrared spectroscopy, Raman spectroscopy, scanning electron microscopy and thermogravimetric analysis. The properties and applications of the composite fibers were characterized by tensile test and a series of electrical conductivity tests. The results show that the modification of PIL realizes non-covalent combination of CaAlg fiber with graphene, improving the electrical conductivity of the fiber.
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Affiliation(s)
- Xingzhu Fu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, College of Science, Key Laboratory of High Performance Fibers & Products, Ministry of Education, Donghua University, 2999 North Renmin Road, Shanghai, 201620 PR China
| | - Yuan Liang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, College of Science, Key Laboratory of High Performance Fibers & Products, Ministry of Education, Donghua University, 2999 North Renmin Road, Shanghai, 201620 PR China
| | - Routeng Wu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, College of Science, Key Laboratory of High Performance Fibers & Products, Ministry of Education, Donghua University, 2999 North Renmin Road, Shanghai, 201620 PR China
| | - Jiaohao Shen
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, College of Science, Key Laboratory of High Performance Fibers & Products, Ministry of Education, Donghua University, 2999 North Renmin Road, Shanghai, 201620 PR China
| | - Zhendong Chen
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, College of Science, Key Laboratory of High Performance Fibers & Products, Ministry of Education, Donghua University, 2999 North Renmin Road, Shanghai, 201620 PR China
| | - Yuwei Chen
- Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-Plastics, Qingdao University of Science & Technology, PR China
| | - Yanping Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, College of Science, Key Laboratory of High Performance Fibers & Products, Ministry of Education, Donghua University, 2999 North Renmin Road, Shanghai, 201620 PR China
| | - Yumin Xia
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, College of Science, Key Laboratory of High Performance Fibers & Products, Ministry of Education, Donghua University, 2999 North Renmin Road, Shanghai, 201620 PR China.
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