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Preparation and Properties of Electrospun PLLA/PTMC Scaffolds. Polymers (Basel) 2022; 14:polym14204406. [PMID: 36297984 PMCID: PMC9611888 DOI: 10.3390/polym14204406] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 07/03/2022] [Accepted: 10/14/2022] [Indexed: 11/25/2022] Open
Abstract
Poly(L-lactide) (PLLA) and PLLA/poly(trimethylene carbonate) (PTMC) scaffolds characterised by different PLLA:PTMC mass ratios (10:0, 9:1, 8:2, 7:3, 6:4 and 5:5) were prepared via electrospinning. The results showed that increasing the PTMC content in the spinning solution caused the following effects: (1) the diameter of the prepared PLLA/PTMC electrospun fibres gradually increased from 188.12 ± 48.87 nm (10:0) to 584.01 ± 60.68 nm (5:5), (2) electrospun fibres with uniform diameters and no beads could be prepared at the PTMC contents of >30%, (3) the elastic modulus of the fibre initially increased and then decreased, reaching a maximum value of 74.49 ± 8.22 Mpa (5:5) and (4) the elongation at the breaking point of the fibres increased gradually from 24.71% to 344.85%. Compared with the PLLA electrospun fibrous membrane, the prepared PLLA/PTMC electrospun fibrous membrane exhibited considerably improved mechanical properties while maintaining good histocompatibility.
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Interfacial Compatibilization into PLA/Mg Composites for Improved In Vitro Bioactivity and Stem Cell Adhesion. Molecules 2021; 26:molecules26195944. [PMID: 34641488 PMCID: PMC8512483 DOI: 10.3390/molecules26195944] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 09/21/2021] [Accepted: 09/27/2021] [Indexed: 01/22/2023] Open
Abstract
The present work highlights the crucial role of the interfacial compatibilization on the design of polylactic acid (PLA)/Magnesium (Mg) composites for bone regeneration applications. In this regard, an amphiphilic poly(ethylene oxide-b-L,L-lactide) diblock copolymer with predefined composition was synthesised and used as a new interface to provide physical interactions between the metallic filler and the biopolymer matrix. This strategy allowed (i) overcoming the PLA/Mg interfacial adhesion weakness and (ii) modulating the composite hydrophilicity, bioactivity and biological behaviour. First, a full study of the influence of the copolymer incorporation on the morphological, wettability, thermal, thermo-mechanical and mechanical properties of PLA/Mg was investigated. Subsequently, the bioactivity was assessed during an in vitro degradation in simulated body fluid (SBF). Finally, biological studies with stem cells were carried out. The results showed an increase of the interfacial adhesion by the formation of a new interphase between the hydrophobic PLA matrix and the hydrophilic Mg filler. This interface stabilization was confirmed by a decrease in the damping factor (tanδ) following the copolymer addition. The latter also proves the beneficial effect of the composite hydrophilicity by selective surface localization of the hydrophilic PEO leading to a significant increase in the protein adsorption. Furthermore, hydroxyapatite was formed in bulk after 8 weeks of immersion in the SBF, suggesting that the bioactivity will be noticeably improved by the addition of the diblock copolymer. This ceramic could react as a natural bonding junction between the designed implant and the fractured bone during osteoregeneration. On the other hand, a slight decrease of the composite mechanical performances was noted.
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Shah TV, Vasava DV. A glimpse of biodegradable polymers and their biomedical applications. E-POLYMERS 2019. [DOI: 10.1515/epoly-2019-0041] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
AbstractOver the past two decades, biodegradable polymers (BPs) have been widely used in biomedical applications such as drug carrier, gene delivery, tissue engineering, diagnosis, medical devices, and antibacterial/antifouling biomaterials. This can be attributed to numerous factors such as chemical, mechanical and physiochemical properties of BPs, their improved processibility, functionality and sensitivity towards stimuli. The present review intended to highlight main results of research on advances and improvements in terms of synthesis, physical properties, stimuli response, and/or applicability of biodegradable plastics (BPs) during last two decades, and its biomedical applications. Recent literature relevant to this study has been cited and their developing trends and challenges of BPs have also been discussed.
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Affiliation(s)
- Tejas V. Shah
- Department of Chemistry, School of Sciences, Gujarat University, Ahmedabad, Gujarat- 380009, India
| | - Dilip V. Vasava
- Department of Chemistry, School of Sciences, Gujarat University, Ahmedabad, Gujarat- 380009, India
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Remya KR, Chandran S, John A, Ramesh P. Pamidronate-encapsulated electrospun polycaprolactone as a potential bone regenerative scaffold. J BIOACT COMPAT POL 2019. [DOI: 10.1177/0883911519835142] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
This study explores the potential of electrospun polycaprolactone scaffolds for the controlled delivery of pamidronate disodium pentahydrate, an amino-bisphosphonate drug used for the treatment of osteoporosis. Major drawbacks associated with oral bisphosphonate therapy are its poor bioavailability and gastrointestinal side-effects. Herein, we used polycaprolactone, a well-known Food and Drug Administration–approved biomaterial, as the delivering vehicle for pamidronate disodium pentahydrate. Scaffolds based on polycaprolactone with three different formulations (1, 3, and 5 wt%) of pamidronate disodium pentahydrate were fabricated by electrospinning, and a comparative study was carried out to evaluate the effect of pamidronate disodium pentahydrate on physico-mechanical and biological properties of polycaprolactone. The observations from Fourier-transform infrared spectra and thermogravimetric analysis confirmed the successful incorporation of pamidronate disodium pentahydrate into polycaprolactone scaffolds. The study also revealed that pamidronate disodium pentahydrate–loaded scaffolds exhibited improved hydrophilicity as well as superior mechanical properties as depicted by the contact angle measurements and mechanical property evaluation. In vitro drug release studies of pamidronate disodium pentahydrate–loaded scaffolds in phosphate buffer saline at 37°C showed that all the scaffolds exhibited controlled release of pamidronate disodium pentahydrate. In vitro degradation studies further revealed that pamidronate disodium pentahydrate incorporated polycaprolactone scaffolds degraded faster as depicted by the fiber rupture and drop in mechanical properties. In vitro cell culture studies using human osteosarcoma cell lines demonstrated that pamidronate disodium pentahydrate–loaded polycaprolactone scaffolds were cytocompatible. The human osteosarcoma cells had favorable interaction with the scaffolds, and the viability of adhered cells was depicted by the fluorescein diacetate/propidium iodide staining. MTT assay further revealed enhanced cell viability on PCL/PDS3 scaffolds. Our findings bespeak that the pamidronate disodium pentahydrate–encapsulated electrospun polycaprolactone scaffolds have the potential to serve as a promising drug delivery vehicle for osteoporotic bone defect repair.
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Affiliation(s)
- KR Remya
- Division of Polymeric Medical Devices, Department of Medical Devices Engineering, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology–Trivandrum, Trivandrum, India
| | - Sunitha Chandran
- Department of Microbiology and Immunology, Louisiana State University Shreveport, Shreveport, LA, USA
| | - Annie John
- Department of Biochemistry, University of Kerala, Trivandrum, India
| | - P Ramesh
- Division of Polymeric Medical Devices, Department of Medical Devices Engineering, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology–Trivandrum, Trivandrum, India
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Pavelková A, Kucharczyk P, Capáková Z, Peer P, Pummerová M, Zedník J, Vohlídal J, Sedlařík V. Effect of the configuration of poly(lactic acid) and content of poly(oxyethylene) blocks to the structure and functional properties of poly(lactic acid)‐
block
‐poly(oxirane)‐based nanofibrous electrospun polyester–ether–urethanes used as potential drug‐delivery system. J Biomed Mater Res B Appl Biomater 2019; 107:2378-2387. [DOI: 10.1002/jbm.b.34331] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Revised: 12/21/2018] [Accepted: 01/13/2019] [Indexed: 11/07/2022]
Affiliation(s)
- Alena Pavelková
- Centre of Polymer SystemsUniversity Institute, Tomas Bata University in Zlin Zlin, 76001 Czech Republic
| | - Pavel Kucharczyk
- Centre of Polymer SystemsUniversity Institute, Tomas Bata University in Zlin Zlin, 76001 Czech Republic
| | - Zdenka Capáková
- Centre of Polymer SystemsUniversity Institute, Tomas Bata University in Zlin Zlin, 76001 Czech Republic
| | - Petra Peer
- Institute of Hydrodynamics of the Czech Academy of Sciences Prague 6, 16672 Czech Republic
| | - Martina Pummerová
- Centre of Polymer SystemsUniversity Institute, Tomas Bata University in Zlin Zlin, 76001 Czech Republic
| | - Jiří Zedník
- Department of Physical and Macromolecular Chemistry, Faculty of ScienceCharles University Prague 2, CZ‐12840 Czech Republic
| | - Jiří Vohlídal
- Department of Physical and Macromolecular Chemistry, Faculty of ScienceCharles University Prague 2, CZ‐12840 Czech Republic
| | - Vladimír Sedlařík
- Centre of Polymer SystemsUniversity Institute, Tomas Bata University in Zlin Zlin, 76001 Czech Republic
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De Silva RT, Dissanayake RK, Mantilaka MMMGPG, Wijesinghe WPSL, Kaleel SS, Premachandra TN, Weerasinghe L, Amaratunga GAJ, de Silva KMN. Drug-Loaded Halloysite Nanotube-Reinforced Electrospun Alginate-Based Nanofibrous Scaffolds with Sustained Antimicrobial Protection. ACS APPLIED MATERIALS & INTERFACES 2018; 10:33913-33922. [PMID: 30220194 DOI: 10.1021/acsami.8b11013] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Halloysite nanotube (HNT)-reinforced alginate-based nanofibrous scaffolds were successfully fabricated by electrospinning to mimic the natural extracellular matrix (ECM) structure which is beneficial for tissue regeneration. An antiseptic drug, cephalexin (CEF)-loaded HNT, was incorporated into the alginate-based matrix to obtain sustained antimicrobial protection and robust mechanical properties, the key criteria for tissue engineering applications. Electron microscopic imaging and drug release studies revealed that CEF had penetrated into the lumen space of the HNT and also deposited on the outer walls, with a total loading capacity of 30 wt %. Moreover, the diameter of alginate-based nanofibers of the scaffolds ranged from 40 to 522 nm with well-aligned HNTs, resulting in superior mechanical properties. For instance, the addition of 5% (w/w) HNT improved the tensile strength (σ) and elastic modulus by 3-fold and 2-fold, respectively, compared to those of the alginate-based scaffolds without HNT. The fabricated scaffolds exhibited remarkable antimicrobial properties against both Gram-negative and Gram-positive bacteria, and the cytotoxicity studies confirmed the nontoxicity of the fabricated scaffolds. Drug release kinetics showed that CEF inside HNTs diffuses within 24 h and that the diffusion of the drug is delayed by 7 days once the CEF-loaded HNTs are incorporated into the alginate-based nanofibers. These fabricated alginate-based electrospun scaffolds with enhanced mechanical properties and sustained antimicrobial protection hold great potential to be used as artificial ECM scaffolds for tissue engineering applications.
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Affiliation(s)
- Rangika Thilan De Silva
- Sri Lanka Institute of Nanotechnology (SLINTEC) , Nanotechnology and Science Park , Mahenwatte, Pitipana, Homagama 10200 , Sri Lanka
| | - Ranga K Dissanayake
- Sri Lanka Institute of Nanotechnology (SLINTEC) , Nanotechnology and Science Park , Mahenwatte, Pitipana, Homagama 10200 , Sri Lanka
| | | | - W P Sanjeewa Lakmal Wijesinghe
- Sri Lanka Institute of Nanotechnology (SLINTEC) , Nanotechnology and Science Park , Mahenwatte, Pitipana, Homagama 10200 , Sri Lanka
| | - Shehan Shalinda Kaleel
- Sri Lanka Institute of Nanotechnology (SLINTEC) , Nanotechnology and Science Park , Mahenwatte, Pitipana, Homagama 10200 , Sri Lanka
| | - Thejani Nisansala Premachandra
- Department of Veterinary Pathobiology, Faculty of Veterinary Medicine , University of Peradeniya , Peradeniya 20400 , Sri Lanka
| | - Laksiri Weerasinghe
- Sri Lanka Institute of Nanotechnology (SLINTEC) , Nanotechnology and Science Park , Mahenwatte, Pitipana, Homagama 10200 , Sri Lanka
| | - Gehan A J Amaratunga
- Sri Lanka Institute of Nanotechnology (SLINTEC) , Nanotechnology and Science Park , Mahenwatte, Pitipana, Homagama 10200 , Sri Lanka
- Electrical Engineering Division, Department of Engineering , University of Cambridge , 9 J. J. Thomson Avenue , Cambridge CB3 0FA , U.K
| | - K M Nalin de Silva
- Sri Lanka Institute of Nanotechnology (SLINTEC) , Nanotechnology and Science Park , Mahenwatte, Pitipana, Homagama 10200 , Sri Lanka
- Department of Chemistry , University of Colombo , Colombo 00300 , Sri Lanka
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Polo Fonseca L, Trinca RB, Felisberti MI. Amphiphilic polyurethane hydrogels as smart carriers for acidic hydrophobic drugs. Int J Pharm 2018; 546:106-114. [DOI: 10.1016/j.ijpharm.2018.05.034] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Revised: 04/25/2018] [Accepted: 05/13/2018] [Indexed: 12/12/2022]
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Gowri M, Suganya K, Latha N, Murugan M, Ahmed M, Alarfaj AA, Rajan M. Metal oxide nanoparticle-functionalized sebacic acid-grafted PHEAM nanocarriers for enriched activity of metronidazole against food borne bacteria: in vitro and in vivo study. NEW J CHEM 2018. [DOI: 10.1039/c8nj03718c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Food borne infection is a serious complication caused by Listeria monocytogenes (L. monocytogenes), a dangerous bacteria.
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Affiliation(s)
- Murugesan Gowri
- Department of Chemistry
- Kandaswami Kandar's College
- Namakkal District
- India
| | - Kannan Suganya
- Department of Microbial Technology
- School of Biological Sciences
- Madurai Kamaraj University
- Madurai
- India
| | - Nachimuthu Latha
- Department of Chemistry
- Kandaswami Kandar's College
- Namakkal District
- India
| | - Marudhamuthu Murugan
- Department of Microbial Technology
- School of Biological Sciences
- Madurai Kamaraj University
- Madurai
- India
| | - Mukhtar Ahmed
- Department of Zoology
- College of Science
- King Saud University
- Riyadh 11451
- Kingdom of Saudi Arabia
| | - Abdullah A. Alarfaj
- Department of Botany and Microbiology
- College of Science
- King Saud University
- Riyadh 11451
- Kingdom of Saudi Arabia
| | - Mariappan Rajan
- Biomaterials in Medicinal Chemistry Laboratory
- Department of Natural Products Chemistry
- School of Chemistry
- Madurai Kamaraj University
- Madurai
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Zou SF, Wang RY, Fan B, Xu JT, Fan ZQ. Effect of interface and confinement size on the crystallization behavior of PLLA confined in coaxial electrospun fibers. J Appl Polym Sci 2017. [DOI: 10.1002/app.45980] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Shu-Fen Zou
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science & Engineering; Zhejiang University; Hangzhou 310027 China
| | - Rui-Yang Wang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science & Engineering; Zhejiang University; Hangzhou 310027 China
| | - Bin Fan
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science & Engineering; Zhejiang University; Hangzhou 310027 China
| | - Jun-Ting Xu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science & Engineering; Zhejiang University; Hangzhou 310027 China
| | - Zhi-Qiang Fan
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science & Engineering; Zhejiang University; Hangzhou 310027 China
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