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Xu H, Xu X, Li S, Song WL, Yu DG, Annie Bligh SW. The Effect of Drug Heterogeneous Distributions within Core-Sheath Nanostructures on Its Sustained Release Profiles. Biomolecules 2021; 11:1330. [PMID: 34572545 PMCID: PMC8469915 DOI: 10.3390/biom11091330] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 09/05/2021] [Accepted: 09/07/2021] [Indexed: 12/17/2022] Open
Abstract
The sustained release of a water-soluble drug is always a key and important issue in pharmaceutics. In this study, using cellulose acetate (CA) as a biomacromolecular matrix, core-sheath nanofibers were developed for providing a sustained release of a model drug-metformin hydrochloride (MET). The core-sheath nanofibers were fabricated using modified tri-axial electrospinning, in which a detachable homemade spinneret was explored. A process-nanostructure-performance relationship was demonstrated through a series of characterizations. The prepared nanofibers F2 could release 95% of the loaded MET through a time period of 23.4 h and had no initial burst effect. The successful sustained release performances of MET can be attributed to the following factors: (1) the reasonable application of insoluble CA as the filament-forming carrier, which determined that the drug was released through a diffusion manner; (2) the core-sheath nanostructure provided the possibility of both encapsulating the drug completely and realizing the heterogeneous distributions of MET in the nanofibers with a higher drug load core than the sheath; (3) the thickness of the sheath sections were able to be exploited for further manipulating a better drug extended release performance. The mechanisms for manipulating the drug sustained release behaviors are proposed. The present proof-of-concept protocols can pave a new way to develop many novel biomolecule-based nanostructures for extending the release of water-soluble drugs.
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Affiliation(s)
- Haixia Xu
- School of Materials Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China; (H.X.); (X.X.); (S.L.); (W.-L.S.)
| | - Xizi Xu
- School of Materials Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China; (H.X.); (X.X.); (S.L.); (W.-L.S.)
| | - Siyu Li
- School of Materials Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China; (H.X.); (X.X.); (S.L.); (W.-L.S.)
| | - Wen-Liang Song
- School of Materials Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China; (H.X.); (X.X.); (S.L.); (W.-L.S.)
| | - Deng-Guang Yu
- School of Materials Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China; (H.X.); (X.X.); (S.L.); (W.-L.S.)
- Shanghai Engineering Technology Research Center for High-Performance Medical Device Materials, Shanghai 200093, China
| | - S. W. Annie Bligh
- School of Health Sciences, Caritas Institute of Higher Education, Hong Kong 999077, China
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Ali R, Toufik L, Dashevskiy A. Use of cellulose acetate butyrate as a carrier for preparation of alcohol-resistant matrix tablet. Pharm Dev Technol 2020; 25:729-734. [DOI: 10.1080/10837450.2020.1738462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Rebaz Ali
- College of Pharmacy, Freie Universität Berlin, Berlin, Germany
- College of Pharmacy, University of Sulaimani, Sulaimani, Kurdistan Region of Iraq
| | - Langa Toufik
- College of Pharmacy, Freie Universität Berlin, Berlin, Germany
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Furtado LM, Hilamatu KC, Balaji K, Ando RA, Petri DF. Miscibility and sustained release of drug from cellulose acetate butyrate/caffeine films. J Drug Deliv Sci Technol 2020. [DOI: 10.1016/j.jddst.2019.101472] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Tan HL, Kai D, Pasbakhsh P, Teow SY, Lim YY, Pushpamalar J. Electrospun cellulose acetate butyrate/polyethylene glycol (CAB/PEG) composite nanofibers: A potential scaffold for tissue engineering. Colloids Surf B Biointerfaces 2019; 188:110713. [PMID: 31884080 DOI: 10.1016/j.colsurfb.2019.110713] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Revised: 12/05/2019] [Accepted: 12/06/2019] [Indexed: 12/26/2022]
Abstract
Electrospinning is a common method to prepare nanofiber scaffolds for tissue engineering. One of the common cellulose esters, cellulose acetate butyrate (CAB), has been electrospun into nanofibers and studied. However, the intrinsic hydrophobicity of CAB limits its application in tissue engineering as it retards cell adhesion. In this study, the properties of CAB nanofibers were improved by fabricating the composite nanofibers made of CAB and hydrophilic polyethylene glycol (PEG). Different ratios of CAB to PEG were tested and only the ratio of 2:1 resulted in smooth and bead-free nanofibers. The tensile test results show that CAB/PEG composite nanofibers have 2-fold higher tensile strength than pure CAB nanofibers. The hydrophobicity of the composite nanofibers was also reduced based on the water contact angle analysis. As the hydrophilicity increases, the swelling ability of the composite nanofiber increases by 2-fold with more rapid biodegradation. The biocompatibility of the nanofibers was tested with normal human dermal fibroblasts (NHDF). The cell viability assay results revealed that the nanofibers are non-toxic. In addition to that, CAB/PEG nanofibers have better cell attachment compared to pure CAB nanofibers. Based on this study, CAB/PEG composite nanofibers could potentially be used as a nanofiber scaffold for applications in tissue engineering.
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Affiliation(s)
- Hui-Li Tan
- School of Science, Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway 47500, Subang Jaya, Selangor Darul Ehsan, Malaysia
| | - Dan Kai
- Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), 2 Fusionopolis Way, Innovis, Singapore 138634, Singapore
| | - Pooria Pasbakhsh
- Advanced Engineering Platform, Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, 47500 Selangor Darul Ehsan, Malaysia; Mechanical Engineering Discipline, School of Engineering, Monash University Malaysia, 47500 Selangor, Malaysia
| | - Sin-Yeang Teow
- Department of Medical Sciences, School of Healthcare and Medical Sciences, Sunway University, Jalan Universiti, Bandar Sunway, 47500 Selangor Darul Ehsan, Malaysia
| | - Yau-Yan Lim
- School of Science, Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway 47500, Subang Jaya, Selangor Darul Ehsan, Malaysia
| | - Janarthanan Pushpamalar
- School of Science, Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway 47500, Subang Jaya, Selangor Darul Ehsan, Malaysia; Advanced Engineering Platform, Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, 47500 Selangor Darul Ehsan, Malaysia; Monash-Industry Palm Oil Education and Research Platform (MIPO), Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, 47500 Selangor Darul Ehsan, Malaysia.
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Adeleke OA. Premium ethylcellulose polymer based architectures at work in drug delivery. INTERNATIONAL JOURNAL OF PHARMACEUTICS-X 2019; 1:100023. [PMID: 31517288 PMCID: PMC6733301 DOI: 10.1016/j.ijpx.2019.100023] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2019] [Revised: 07/02/2019] [Accepted: 07/03/2019] [Indexed: 12/14/2022]
Abstract
Premium ethylcellulose polymers are hydrophobic cellulose ether based biomaterials widely employed as biocompatible templates for the design of novel drug delivery systems. They are classified as United States Food and Drug Administration Generally-Recognized-As-Safe chemical substances and have been extensively utilized within the biomedical and pharmaceutical industries for over half a century. They have so far demonstrated the potential to modulate and improve the physiological performance of bioactives leading to the desired enhanced prophylactic and therapeutic outcomes. This review therefore presents a scholarly survey of inter-disciplinary developments focused on the functionalities of ethylcellulose polymers as biomaterials useful for the design of smart delivery architectures for relevant pharmacotherapeutic biomedical applications. Emphasis was placed on evaluating scientific resources related to recent advancements and future directions associated with its applications as delivery systems for drugs and biologics within the past decade thus complementing other specialized reviews showcasing the theme.
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Affiliation(s)
- Oluwatoyin A Adeleke
- Immunobiology Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institute of Health, US Department of Health and Human Services, Bethesda, MD 20892, USA.,Division of Pharmaceutical Sciences, School of Pharmacy, Sefako Makgatho Health Sciences University, Pretoria 0208, South Africa
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Blend of cellulose ester and enteric polymers for delayed and enteric coating of core tablets of hydrophilic and hydrophobic drugs. Int J Pharm 2019; 567:118462. [PMID: 31247274 DOI: 10.1016/j.ijpharm.2019.118462] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Revised: 06/19/2019] [Accepted: 06/23/2019] [Indexed: 11/21/2022]
Abstract
The focus of this work was to explore feasibility of using blends of cellulose esters (CA 320S, CA 3980-10 or CAB 171-15) and enteric polymers (C-A-P, Eudragit® L100 or HPMCP HP-55) for delayed and enteric coating of tablets containing either diclofenac sodium (DFS, high dose) or prednisone (PDS, low dose) drug. The core tablets of DFS or PDS were coated with polymer blends to achieve approximate weight gain of 5% and 10%. The coated tablets were characterized for dissolution (0.1 N HCl and phosphate buffer pH 6.8) and surface morphology. The surface morphology of CA 398-10 or CAB 171-15 based polymer blends was rough and fibrous. Less than 0.5% drug was dissolved in 120 min from 5% w/w coated tablets in acid-phase dissolution testing. The dissolution in phosphate buffer pH 6.8 medium varied from 16.2 ± 0.2 to 98 ± 2.1%, and 30.1 ± 0.5% to 101.7 ± 3.4% in 120 min from DFS and PDS coated tablets, respectively. Dissolution was less in CA 320S based blends compared to CA 398-10 or CAB 171-15 blends in phosphate buffer medium. Furthermore, there were no significant differences observed in dissolution profiles of coated tablets of DFS or PDS. This can be explained by dose of the drugs. Additionally, dissolution was higher in tablets coated with enteric polymer alone compared with the blends. In conclusion, core tablets can be coated with cellulose ester and enteric polymers blend to impart both delayed and enteric release feature to the tablets containing hydrophilic or hydrophobic drug.
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