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Rafique A, Bulbul YE, Raza ZA, Oksuz AU. Development of aminolyzed polylactic acid-based porous films for pH-responsive sustained drug delivery devices. Int J Biol Macromol 2024; 266:130947. [PMID: 38521313 DOI: 10.1016/j.ijbiomac.2024.130947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Revised: 03/07/2024] [Accepted: 03/14/2024] [Indexed: 03/25/2024]
Abstract
Biomaterial-based drug-carrying systems have scored enormous focus in the biomedical sector. Poly(lactic acid) (PLA) is a versatile material in this context. A porous and hydrophilic PLA surface can do this job better. We aimed to synthesize pH-responsive PLA-based porous films for uptaking and releasing amikacin sulfate in the aqueous media. The native PLA lacks functional/polar sites for the said purpose. So, we tended to aminolyze it for tailored physicochemical and surface properties. The amino (-NH2) group density on the treated films was examined using the ninhydrin assay. Electron microscopic analyses indicated the retention of porous morphology after aminolysis. Surface wettability and FTIR results expressed that the resultant films became hydrophilic after aminolysis. The thermal analysis expressed reasonable thermal stability of the aminolyzed films. The prepared films expressed pH-responsive behaviour for loading and releasing amikacin sulfate drug at pH 5.5 and 7.4, respectively. The drug release data best-fitted the first-order kinetic model based on Akaike information and model selection criteria. The prepared PLA-based aminolyzed films qualified as potential candidates for pH-responsive drug delivery applications. This study could be the first report on pH-responsive amikacin sulfate uptake and release on the swellable aminolyzed PLA-based porous films for effective drug delivery application.
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Affiliation(s)
- Ammara Rafique
- Department of Applied Sciences, National Textile University, Faisalabad 37610, Pakistan; Department of Chemistry, Suleyman Demirel University, Faculty of Engineering and Natural Sciences, 32220 Isparta, Turkey
| | - Y Emre Bulbul
- Department of Chemistry, Suleyman Demirel University, Faculty of Engineering and Natural Sciences, 32220 Isparta, Turkey
| | - Zulfiqar Ali Raza
- Department of Applied Sciences, National Textile University, Faisalabad 37610, Pakistan.
| | - Aysegul Uygun Oksuz
- Department of Chemistry, Suleyman Demirel University, Faculty of Engineering and Natural Sciences, 32220 Isparta, Turkey.
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Tuning Drug Release via Twin Screw Extrusion in Polyester Films. J Pharm Sci 2019; 108:2430-2437. [DOI: 10.1016/j.xphs.2019.02.024] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 02/24/2019] [Accepted: 02/27/2019] [Indexed: 11/17/2022]
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Shah AH, Bhusari S, Djordjevic I, Steele TW. Twin screw extrusion of conductive citrate-based biomaterials. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2018.08.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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Bagheri M, Mohammadi M, Steele TW, Ramezani M. Nanomaterial coatings applied on stent surfaces. Nanomedicine (Lond) 2017; 11:1309-26. [PMID: 27111467 DOI: 10.2217/nnm-2015-0007] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
The advent of percutaneous coronary intervention and intravascular stents has revolutionized the field of interventional cardiology. Nonetheless, in-stent restenosis, inflammation and late-stent thrombosis are the major obstacles with currently available stents. In order to enhance the hemocompatibility of stents, advances in the field of nanotechnology allow novel designs of nanoparticles and biomaterials toward localized drug/gene carriers or stent scaffolds. The current review focuses on promising polymers used in the fabrication of newer generations of stents with a short synopsis on atherosclerosis and current commercialized stents, nanotechnology's impact on stent development and recent advancements in stent biomaterials is discussed in context.
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Affiliation(s)
- Mahsa Bagheri
- Shariati Hospital, Mashhad University of Medical Sciences, Mashhad, PO Box 935189-9983, Iran.,Nanotechnology Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, PO Box 91775-1365, Iran
| | - Marzieh Mohammadi
- Nanotechnology Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, PO Box 91775-1365, Iran
| | - Terry Wj Steele
- Division of Materials Technology, Materials & Science Engineering, Nanyang Technological University, Singapore
| | - Mohammad Ramezani
- Pharmaceutical Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, PO Box 91775-1365, Iran
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Zhang B, Sai Lung P, Zhao S, Chu Z, Chrzanowski W, Li Q. Shape dependent cytotoxicity of PLGA-PEG nanoparticles on human cells. Sci Rep 2017; 7:7315. [PMID: 28779154 PMCID: PMC5544670 DOI: 10.1038/s41598-017-07588-9] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Accepted: 06/23/2017] [Indexed: 11/28/2022] Open
Abstract
We investigated the influence of nanoparticles’ shape on the physiological responses of cells, when they were fed with spherical and needle-shaped PLGA-PEG nanoparticles (the volume of the nanoparticles had been chosen as the fixed parameter). We found that both types of NPs entered cells via endocytosis and upon internalization they stayed in membrane bounded vesicles. Needle-shaped, but not the spherical-shaped NPs were found to induce significant cytotoxicity in the cell lines tested. Our study evidenced that the cytotoxicity of needle-shaped NPs was induced through the lysosome disruption. Lysosome damage activated the signaling pathways for cell apoptosis, and eventually caused DNA fragmentation and cell death. The present work showed that physiological response of the cells can be very different when the shape of the fed nanoparticles changed from spherical to needle-like. The finding suggests that the toxicity of nanomaterials also depends on their shape.
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Affiliation(s)
- Bokai Zhang
- Department of Physics, The Chinese University of Hong Kong, Shatin, New Territory, Hong Kong
| | - Ping Sai Lung
- Department of Physics, The Chinese University of Hong Kong, Shatin, New Territory, Hong Kong
| | - Saisai Zhao
- Department of Physics, The Chinese University of Hong Kong, Shatin, New Territory, Hong Kong
| | - Zhiqin Chu
- Department of Physics, The Chinese University of Hong Kong, Shatin, New Territory, Hong Kong
| | | | - Quan Li
- Department of Physics, The Chinese University of Hong Kong, Shatin, New Territory, Hong Kong.
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Tumwesigye SK, Montañez JC, Oliveira JC, Sousa-Gallagher MJ. Novel Intact Bitter Cassava: Sustainable Development and Desirability Optimisation of Packaging Films. FOOD BIOPROCESS TECH 2016. [DOI: 10.1007/s11947-015-1665-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Schaller T, Wenner T, Agrawal R, Teoh S, Phua LT, Loo JSC, Steele TWJ. High Throughput Screening of Valganciclovir in Acidic Microenvironments of Polyester Thin Films. MATERIALS 2015; 8:1714-1728. [PMID: 28788027 PMCID: PMC5507036 DOI: 10.3390/ma8041714] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Revised: 03/19/2015] [Accepted: 03/30/2015] [Indexed: 01/12/2023]
Abstract
Ganciclovir and valganciclor are antiviral agents used for the treatment of cytomegalovirus retinitis. The conventional method for administering ganciclovir in cytomegalovirus retinitis patients is repeated intravitreal injections. In order to obviate the possible detrimental effects of repeated intraocular injections, to improve compliance and to eliminate systemic side-effects, we investigated the tuning of the ganciclovir pro-drug valganciclovir and the release from thin films of poly(lactic-co-glycolic acid) (PLGA), polycaprolactone (PCL), or mixtures of both, as a step towards prototyping periocular valganciclovir implants. To investigate the drug release, we established and evaluated a high throughput fluorescence-based quantification screening assay for the detection of valganciclovir. Our protocol allows quantifying as little as 20 ng of valganciclovir in 96-well polypropylene plates and a 50× faster analysis compared to traditional HPLC measurements. This improvement can hence be extrapolated to other polyester matrix thin film formulations using a high-throughput approach. The acidic microenvironment within the polyester matrix was found to protect valganciclovir from degradation with resultant increases in the half-life of the drug in the periocular implant to 100 days. Linear release profiles were obtained using the pure polyester polymers for 10 days and 60 days formulations; however, gross phase separations of PCL and acid-terminated PLGA prevented tuning within these timeframes due to the phase separation of the polymer, valganciclovir, or both.
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Affiliation(s)
- Teilo Schaller
- School of Materials Science & Engineering, Nanyang Technological University, 50 Nanyang Drive, Singapore 639798, Singapore.
| | - Tobias Wenner
- School of Materials Science & Engineering, Nanyang Technological University, 50 Nanyang Drive, Singapore 639798, Singapore.
| | - Rupesh Agrawal
- National Healthcare Group Eye Institute, Tan Tock Seng Hospital, 11 Jalan Tan Tock Seng, Singapore 308433, Singapore.
| | - Stephen Teoh
- National Healthcare Group Eye Institute, Tan Tock Seng Hospital, 11 Jalan Tan Tock Seng, Singapore 308433, Singapore.
| | - Li Ting Phua
- School of Materials Science & Engineering, Nanyang Technological University, 50 Nanyang Drive, Singapore 639798, Singapore.
| | - Joachim S C Loo
- School of Materials Science & Engineering, Nanyang Technological University, 50 Nanyang Drive, Singapore 639798, Singapore.
| | - Terry W J Steele
- School of Materials Science & Engineering, Nanyang Technological University, 50 Nanyang Drive, Singapore 639798, Singapore.
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Cheng T, Ortiz RF, Vedantham K, Naccache R, Vetrone F, Marks RS, Steele TW. Tunable Chemical Release from Polyester Thin Film by Photocatalytic Zinc Oxide and Doped LiYF4 Upconverting Nanoparticles. Biomacromolecules 2014; 16:364-73. [DOI: 10.1021/bm501567m] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Ting Cheng
- School of Materials Science & Engineering, College of Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Raphael Francois Ortiz
- School of Materials Science & Engineering, College of Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Kumar Vedantham
- School of Materials Science & Engineering, College of Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Rafik Naccache
- Institut
National de la Recherche Scientifique—Énergie, Matériaux,
et Télécommunications, Université du Québec, 1650
Lionel-Boulet, Varennes, Québec J3X 1S2, Canada
| | - Fiorenzo Vetrone
- Institut
National de la Recherche Scientifique—Énergie, Matériaux,
et Télécommunications, Université du Québec, 1650
Lionel-Boulet, Varennes, Québec J3X 1S2, Canada
| | - Robert S. Marks
- School of Materials Science & Engineering, College of Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
- Department
of Biotechnology Engineering, Faculty of Engineering Sciences, Ben Gurion University of the Negev, P.O. Box 653, Beer Sheva 84105, Israel
| | - Terry W.J. Steele
- School of Materials Science & Engineering, College of Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
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Mangindaan D, Kuo WH, Wang MJ. Two-dimensional amine-functionality gradient by plasma polymerization. Biochem Eng J 2013. [DOI: 10.1016/j.bej.2013.02.022] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Huang CL, Kumar S, Tan JJ, Boey FY, Venkatraman SS, Steele TW, Loo JS. Modulating drug release from poly(lactic-co-glycolic acid) thin films through terminal end-groups and molecular weight. Polym Degrad Stab 2013. [DOI: 10.1016/j.polymdegradstab.2012.11.012] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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