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Farmoudeh A, Akbari J, Saeedi M, Ghasemi M, Asemi N, Nokhodchi A. Methylene blue-loaded niosome: preparation, physicochemical characterization, and in vivo wound healing assessment. Drug Deliv Transl Res 2020; 10:1428-1441. [PMID: 32100265 PMCID: PMC7447683 DOI: 10.1007/s13346-020-00715-6] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Following skin injury, the overproduction of reactive oxygen species (ROS) during the inflammatory phase can cause tissue damage and delay in wound healing. Methylene blue (MB) decreases mitochondrial ROS production and has antioxidant effects. The authors aimed to prepare MB-loaded niosomes using the ultra-sonication technique as a green formulation method. A Box-Behnken design was selected to optimize formulation variables. The emulsifier to cholesterol ratio, HLB of mixed surfactants (Span 60 and Tween 60), and sonication time were selected as independent variables. Vesicle size, zeta potential (ZP), and drug entrapment capacity percentage were studied as dependent variables. The optimized formulation of niosomes showed spherical shape with optimum vesicle size of 147.8 nm, ZP of - 18.0 and entrapment efficiency of 63.27%. FTIR study showed no observable interaction between MB and other ingredients. In vivo efficacy of optimized formulation was evaluated using an excision wound model in male Wistar rat. Superoxide dismutase (SOD, an endogenous antioxidant) and malondialdehyde (MDA, an end product of lipid peroxidation) levels in skin tissue samples were evaluated. After 3 days, MDA was significantly decreased in niosomal gel-treated group, whereas SOD level was increased. Histological results indicate rats that received niosomal MB were treated effectively faster than other ones. Graphical abstract.
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Affiliation(s)
- Ali Farmoudeh
- Department of Pharmaceutics, Faculty of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran
| | - Jafar Akbari
- Department of Pharmaceutics, Faculty of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran.
| | - Majid Saeedi
- Department of Pharmaceutics, Faculty of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran
| | - Maryam Ghasemi
- Department of Pathology, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Neda Asemi
- Analytical division, Faculty of Chemistry, University of Mazandaran, Babolsar, Iran
| | - Ali Nokhodchi
- Pharmaceutics Research Laboratory, School of Life Sciences, University of Sussex, Brighton, BN1 9QJ, UK. .,Drug Applied Research Center and Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran.
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252
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Brauner B, Schwarz P, Wirth M, Gabor F. Micro vs. nano: PLGA particles loaded with trimethoprim for instillative treatment of urinary tract infections. Int J Pharm 2020; 579:119158. [PMID: 32081799 DOI: 10.1016/j.ijpharm.2020.119158] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 02/11/2020] [Accepted: 02/16/2020] [Indexed: 01/06/2023]
Abstract
Recurring infections and increasing resistances continue to complicate treatment of urinary tract infections. To investigate alternative treatment options, trimethoprim loaded micro- (D[4;3] of 1-9 µm) and nanoparticles (Z-Avg of 200-400 nm) were prepared from two types of poly(d,l-lactic-co-glycolic acid) (PLGA) for instillative therapy. While PLGA 503H microparticles could not be loaded with more than 2.6% trimethoprim, PLGA 2300 entrapped 22%. When preparing nanoparticles, both types displayed an even higher drug load of up to 29% using PLGA 2300, while PLGA 503H drug load stagnated at 10%. After eight hours, drug release from microparticles amounted to 55% (503H) and 35% (2300) whereas total drug release occurred after 8 (503H) and 9 days (2300). In case of nanoparticles, trimethoprim was liberated much faster with 60% after 2 h and a complete release after 24 h from both polymers. PLGA 2300 seems to be the better choice for entrapment of trimethoprim in microparticles considering the drug load. Both polymers, however, seem to be viable options for nanoparticles. Due to the higher overall drug load, nanoparticles seem to be advantageous over microparticles for instillative therapy, especially when prepared with PLGA 2300.
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Affiliation(s)
- Bernhard Brauner
- Department of Pharmaceutical Technology and Biopharmaceutics, University of Vienna, Althanstraße 14, 1090 Vienna, Austria
| | - Patrik Schwarz
- Department of Pharmaceutical Technology and Biopharmaceutics, University of Vienna, Althanstraße 14, 1090 Vienna, Austria
| | - Michael Wirth
- Department of Pharmaceutical Technology and Biopharmaceutics, University of Vienna, Althanstraße 14, 1090 Vienna, Austria
| | - Franz Gabor
- Department of Pharmaceutical Technology and Biopharmaceutics, University of Vienna, Althanstraße 14, 1090 Vienna, Austria.
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253
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Cesari A, Loureiro MV, Vale M, Yslas EI, Dardanelli M, Marques AC. Polycaprolactone microcapsules containing citric acid and naringin for plant growth and sustainable agriculture: physico-chemical properties and release behavior. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 703:135548. [PMID: 31767319 DOI: 10.1016/j.scitotenv.2019.135548] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Revised: 11/13/2019] [Accepted: 11/14/2019] [Indexed: 06/10/2023]
Abstract
Plant growth promoting rhizobacteria (PGPR) is an alternative to chemical fertilizers for sustainable, environment friendly agriculture. There is a need to develop strategies to potentiate the interaction between rhizobacteria and plants. Flavonoids and organic acids (components of root exudates) play specific beneficial roles as carbon sources and signal molecules in the plant - rhizobacteria interactions. The goal of this work is to encapsulate signal molecules, namely citric acid and naringin, an organic acid and a flavonoid, respectively, by a biodegradable polymer, polycaprolactone (PCL), in order to maintain the stability and activity of those signal molecules and enable their slow or controlled release over a selected period of time, according to the needs of the plants. This approach is expected to potentiate food crops, namely peanut crop, in adverse environmental conditions (water deficit), by promoting the beneficial interaction between the peanut plant (A. hypogaea) and rhizobacteria. The microcapsules (MCs) are obtained by an emulsion process combined with solvent evaporation technique and are characterized by scanning electron microscopy, thermogravimetry and Fourier transformed infrared spectroscopy. The kinetics of in vitro release of encapsulated molecules, in a period where the uptake of the compound in plants can occur, is studied. The encapsulation synthesis parameters that lead to the best encapsulation process yield and efficiency, as well as to the best final performance in terms of release, are identified. The effect of pH and molecular weight of PCL is found to mediate the release properties of the molecules for different types of soil. PCL 45000 Mw dissolved at 16% in dichloromethane leads to an encapsulation efficiency of 75% and the resulting MCs containing naringin exhibit a slow release profile for 30 days, unmodified by pH, enabling their use in soils of different characteristics. This research makes possible the manufacturing of smart materials for sustainable agriculture practices.
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Affiliation(s)
- Adriana Cesari
- INBIAS, Instituto de Biotecnología Ambiental y Salud, CONICET, Departamento de Biología Molecular, Universidad Nacional de Río Cuarto, Ruta Nacional 36, Km 601, Córdoba, Argentina
| | - Mónica V Loureiro
- CERENA, Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Avenida Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Mário Vale
- CERENA, Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Avenida Rovisco Pais, 1049-001 Lisboa, Portugal
| | - E Inés Yslas
- IITEMA, Instituto de Investigaciones en Tecnolgías Energéticas y Materiales Avanzados, CONICET, Departamento de Biología Molecular, Universidad Nacional de Río Cuarto, Ruta Nacional 36, Km 601, Córdoba, Argentina
| | - Marta Dardanelli
- INBIAS, Instituto de Biotecnología Ambiental y Salud, CONICET, Departamento de Biología Molecular, Universidad Nacional de Río Cuarto, Ruta Nacional 36, Km 601, Córdoba, Argentina
| | - Ana C Marques
- CERENA, Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Avenida Rovisco Pais, 1049-001 Lisboa, Portugal.
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254
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Bi S, Barinelli V, Sobkowicz MJ. Degradable Controlled Release Fertilizer Composite Prepared via Extrusion: Fabrication, Characterization, and Release Mechanisms. Polymers (Basel) 2020; 12:polym12020301. [PMID: 32024294 PMCID: PMC7077398 DOI: 10.3390/polym12020301] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2019] [Revised: 01/23/2020] [Accepted: 01/27/2020] [Indexed: 12/13/2022] Open
Abstract
In this work, biodegradable polymers were melt compounded with urea phosphate to fabricate "smart fertilizers" for sustainable agriculture. Urea phosphate (UP) is typically applied as a water-soluble fertilizer to treat phosphorus deficiency in high pH soils. Due to the low diffusion rate of phosphate through slow-release fertilizer coatings, phosphate supply has been considered the "bottleneck" for nitrogen-phosphorous-potassium (NPK) nutrients supply. We study the influence of polymer matrix structure on release kinetics in deionized water using novel polyesters including poly (hexamethylene succinate) (PHS), poly (30% butylene succinate-co-70% hexamethylene succinate) (PBHS 30/70), and PBHS 70/30. Melt processed composites of UP and polyester were analyzed to determine UP loading efficiency and dispersion and distribution of the salt in the polymer matrix. A combined empirical model involving diffusion and erosion mechanisms was found have a good agreement with the experimental release curve. This work provides a solution for environmentally friendly controlled release phosphate fertilizer with good release performance using bio-based and biodegradable polymers.
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255
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Towards in situ continuous feeding via controlled release of complete nutrients for fed-batch culture of animal cells. Biochem Eng J 2020. [DOI: 10.1016/j.bej.2019.107436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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256
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Ahmad Z, Khan MI, Siddique MI, Sarwar HS, Shahnaz G, Hussain SZ, Bukhari NI, Hussain I, Sohail MF. Fabrication and Characterization of Thiolated Chitosan Microneedle Patch for Transdermal Delivery of Tacrolimus. AAPS PharmSciTech 2020; 21:68. [PMID: 31950394 DOI: 10.1208/s12249-019-1611-9] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Accepted: 12/11/2019] [Indexed: 12/31/2022] Open
Abstract
Microneedle patch is a prominent strategy with minimal invasion and painless application to improve skin penetration of drug molecules. Herein, we report microneedle patch (MNP) as an alternative to the oral route for the systemic delivery of tacrolimus (TM), an immunosuppressant drug. Thiolated chitosan (TCS) based microneedle patch was fabricated and characterized in vitro and in vivo for its mechanical strength, skin penetration, drug release, and skin irritation. The MNP having 225 needles with 575 μm showed good mechanical properties in terms of tensile strength and percentage elongation. The skin penetration showed 84% penetration with no breakage. Histology of the mice skin after insertion showed the penetration of needles into the dermis. In vitro release and ex vivo permeation studies through Franz diffusion cell showed the sustained release (82.5%) of TM from the MNP with significantly higher (p < 0.05) skin permeation as compared with controls, respectively. Moreover, in vivo biocompatibility in rats showed the safety of the material and patch. Thus, the TCS microneedle patch has the potential to be developed as a transdermal delivery system for tacrolimus with improved bioavailability and sustained release over a longer period.
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257
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Novel slow drug release bioceramic composite materials for wound dressing applications: potential of natural materials. SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-1977-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
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258
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Fiorati A, Contessi Negrini N, Baschenis E, Altomare L, Faré S, Giacometti Schieroni A, Piovani D, Mendichi R, Ferro M, Castiglione F, Mele A, Punta C, Melone L. TEMPO-Nanocellulose/Ca 2+ Hydrogels: Ibuprofen Drug Diffusion and In Vitro Cytocompatibility. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E183. [PMID: 31906423 PMCID: PMC6981511 DOI: 10.3390/ma13010183] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 12/28/2019] [Accepted: 12/29/2019] [Indexed: 12/16/2022]
Abstract
Stable hydrogels with tunable rheological properties were prepared by adding Ca2+ ions to aqueous dispersions of 2,2,6,6-tetramethylpiperidine 1-oxyl (TEMPO)-oxidized and ultra-sonicated cellulose nanofibers (TOUS-CNFs). The gelation occurred by interaction among polyvalent cations and the carboxylic units introduced on TOUS-CNFs during the oxidation process. Both dynamic viscosity values and pseudoplastic rheological behaviour increased by increasing the Ca2+ concentration, confirming the cross-linking action of the bivalent cation. The hydrogels were proved to be suitable controlled release systems by measuring the diffusion coefficient of a drug model (ibuprofen, IB) by high-resolution magic angle spinning (HR-MAS) nuclear magnetic resonance (NMR) spectroscopy. IB was used both as free molecule and as a 1:1 pre-formed complex with β-cyclodextrin (IB/β-CD), showing in this latter case a lower diffusion coefficient. Finally, the cytocompatibility of the TOUS-CNFs/Ca2+ hydrogels was demonstrated in vitro by indirect and direct tests conducted on a L929 murine fibroblast cell line, achieving a percentage number of viable cells after 7 days higher than 70%.
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Affiliation(s)
- Andrea Fiorati
- Department of Chemistry, Materials, and Chemical Engineering “G. Natta”—Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133 Milano, Italy; (N.C.N.); (E.B.); (L.A.); (S.F.); (M.F.); (F.C.); (A.M.); (C.P.)
- INSTM, National Consortium of Materials Science and Technology, Local Unit Politecnico di Milano, 20133 Milano, Italy
| | - Nicola Contessi Negrini
- Department of Chemistry, Materials, and Chemical Engineering “G. Natta”—Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133 Milano, Italy; (N.C.N.); (E.B.); (L.A.); (S.F.); (M.F.); (F.C.); (A.M.); (C.P.)
- INSTM, National Consortium of Materials Science and Technology, Local Unit Politecnico di Milano, 20133 Milano, Italy
| | - Elena Baschenis
- Department of Chemistry, Materials, and Chemical Engineering “G. Natta”—Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133 Milano, Italy; (N.C.N.); (E.B.); (L.A.); (S.F.); (M.F.); (F.C.); (A.M.); (C.P.)
| | - Lina Altomare
- Department of Chemistry, Materials, and Chemical Engineering “G. Natta”—Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133 Milano, Italy; (N.C.N.); (E.B.); (L.A.); (S.F.); (M.F.); (F.C.); (A.M.); (C.P.)
- INSTM, National Consortium of Materials Science and Technology, Local Unit Politecnico di Milano, 20133 Milano, Italy
| | - Silvia Faré
- Department of Chemistry, Materials, and Chemical Engineering “G. Natta”—Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133 Milano, Italy; (N.C.N.); (E.B.); (L.A.); (S.F.); (M.F.); (F.C.); (A.M.); (C.P.)
- INSTM, National Consortium of Materials Science and Technology, Local Unit Politecnico di Milano, 20133 Milano, Italy
| | - Alberto Giacometti Schieroni
- Istituto di Scienze e Tecnologie Chimiche (SCITEC-CNR), Via A. Corti 12, 20133 Milano, Italy; (A.G.S.); (D.P.); (R.M.)
| | - Daniele Piovani
- Istituto di Scienze e Tecnologie Chimiche (SCITEC-CNR), Via A. Corti 12, 20133 Milano, Italy; (A.G.S.); (D.P.); (R.M.)
| | - Raniero Mendichi
- Istituto di Scienze e Tecnologie Chimiche (SCITEC-CNR), Via A. Corti 12, 20133 Milano, Italy; (A.G.S.); (D.P.); (R.M.)
| | - Monica Ferro
- Department of Chemistry, Materials, and Chemical Engineering “G. Natta”—Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133 Milano, Italy; (N.C.N.); (E.B.); (L.A.); (S.F.); (M.F.); (F.C.); (A.M.); (C.P.)
| | - Franca Castiglione
- Department of Chemistry, Materials, and Chemical Engineering “G. Natta”—Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133 Milano, Italy; (N.C.N.); (E.B.); (L.A.); (S.F.); (M.F.); (F.C.); (A.M.); (C.P.)
| | - Andrea Mele
- Department of Chemistry, Materials, and Chemical Engineering “G. Natta”—Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133 Milano, Italy; (N.C.N.); (E.B.); (L.A.); (S.F.); (M.F.); (F.C.); (A.M.); (C.P.)
- Istituto di Scienze e Tecnologie Chimiche (SCITEC-CNR), Via A. Corti 12, 20133 Milano, Italy; (A.G.S.); (D.P.); (R.M.)
| | - Carlo Punta
- Department of Chemistry, Materials, and Chemical Engineering “G. Natta”—Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133 Milano, Italy; (N.C.N.); (E.B.); (L.A.); (S.F.); (M.F.); (F.C.); (A.M.); (C.P.)
- INSTM, National Consortium of Materials Science and Technology, Local Unit Politecnico di Milano, 20133 Milano, Italy
| | - Lucio Melone
- Department of Chemistry, Materials, and Chemical Engineering “G. Natta”—Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133 Milano, Italy; (N.C.N.); (E.B.); (L.A.); (S.F.); (M.F.); (F.C.); (A.M.); (C.P.)
- INSTM, National Consortium of Materials Science and Technology, Local Unit Politecnico di Milano, 20133 Milano, Italy
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259
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Polyethylene Glycol-Chitosan Oligosaccharide-Coated Superparamagnetic Iron Oxide Nanoparticles: A Novel Drug Delivery System for Curcumin Diglutaric Acid. Biomolecules 2020; 10:biom10010073. [PMID: 31906490 PMCID: PMC7023009 DOI: 10.3390/biom10010073] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 12/25/2019] [Accepted: 12/30/2019] [Indexed: 12/12/2022] Open
Abstract
Curcumin diglutaric acid-loaded polyethylene glycol-chitosan oligosaccharide-coated superparamagnetic iron oxide nanoparticles (CG-PEG-CSO-SPIONs) were fabricated by co-precipitation and optimized using a Box–Behnken statistical design in order to achieve the minimum size, optimal zeta potential (≥ ±20 mV), and maximum loading efficiency and capacity. The results demonstrated that CG-PEG-CSO-SPIONs prepared under the optimal condition were almost spherical in shape with a smooth surface, a diameter of 130 nm, zeta potential of 30.6 mV, loading efficiency of 83.3%, and loading capacity of 8.3%. The vibrating sample magnetometer results of the optimized CG-PEG-CSO-SPIONs showed a superparamagnetic behavior. Fourier transform infrared spectroscopy and X-ray diffraction analyses indicated that the CG physically interacted with PEG-CSO-SPIONs. In addition, the CG-PEG-CSO-SPIONs could be stored dry for up to 12 weeks or in aqueous solution for up to 4 days at either 4 °C or 25 °C with no loss of stability. The CG-PEG-CSO-SPIONs exhibited a sustained release profile up to 72 h under simulated physiological (pH 7.4) and tumor extracellular (pH 5.5) environments. Furthermore, the CG-PEG-CSO-SPIONs showed little non-specific protein binding in the simulated physiological environment. The CG-PEG-CSO-SPIONs enhanced the cellular uptake and cytotoxicity of CG against human colorectal adenocarcinoma HT-29 cells compared to free CG, and more CG was delivered to the cells after applying an external magnetic field. The overall results suggest that PEG-CSO-SPIONs have potential to be used as a novel drug delivery system for CG.
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260
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dos Santos DM, Chagas PA, Leite IS, Inada NM, de Annunzio SR, Fontana CR, Campana-Filho SP, Correa DS. Core-sheath nanostructured chitosan-based nonwovens as a potential drug delivery system for periodontitis treatment. Int J Biol Macromol 2020; 142:521-534. [DOI: 10.1016/j.ijbiomac.2019.09.124] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Revised: 08/14/2019] [Accepted: 09/16/2019] [Indexed: 12/29/2022]
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261
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Sharma K, Saady A, Jacob A, Porat Z, Gedanken A. Entrapment and release kinetics study of dyes from BSA microspheres forming a matrix and a reservoir system. J Mater Chem B 2020; 8:10154-10161. [DOI: 10.1039/d0tb02106g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Two kinds of Bovine Serum Albumin (BSA)-loaded microspheres were prepared in water-organic bilayer systems using ultrasonic irradiation.
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Affiliation(s)
- Kusha Sharma
- Bar-Ilan Institute for Nanotechnology and Advanced Materials
- Department of Chemistry
- Bar-Ilan University
- Ramat-Gan 52900
- Israel
| | - Abed Saady
- Bar-Ilan Institute for Nanotechnology and Advanced Materials
- Department of Chemistry
- Bar-Ilan University
- Ramat-Gan 52900
- Israel
| | - Avi Jacob
- The Mina Goodman Faculty of Life Sciences
- Bar-Ilan University
- Ramat-Gan 52900
- Israel
| | - Ze’ev Porat
- Department of Chemistry
- Nuclear Research Center-Negev
- Be’er-Sheva
- Israel
- Unit of Environmental Engineering
| | - Aharon Gedanken
- Bar-Ilan Institute for Nanotechnology and Advanced Materials
- Department of Chemistry
- Bar-Ilan University
- Ramat-Gan 52900
- Israel
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262
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Pereira AKV, Barbosa RDM, Fernandes MAC, Finkler L, Finkler CLL. Comparative analyses of response surface methodology and artificial neural networks on incorporating tetracaine into liposomes. BRAZ J PHARM SCI 2020. [DOI: 10.1590/s2175-97902019000317808] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Affiliation(s)
| | - Raquel de Melo Barbosa
- UNINASSAU College, Brazil; Federal University of Rio Grande do Norte, Brazil; Massachusetts Institute of Technology, USA
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263
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Salama A, Badran M, Elmowafy M, Soliman GM. Spironolactone-Loaded LeciPlexes as Potential Topical Delivery Systems for Female Acne: In Vitro Appraisal and Ex Vivo Skin Permeability Studies. Pharmaceutics 2019; 12:E25. [PMID: 31881783 PMCID: PMC7022583 DOI: 10.3390/pharmaceutics12010025] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Accepted: 12/20/2019] [Indexed: 01/09/2023] Open
Abstract
Spironolactone (SP), an aldosterone antagonist with anti-androgen properties, has shown promising results in the treatment of female acne. However, its systemic side effects limit its clinical benefits. This study aimed to prepare and evaluate LeciPlexes for SP topical delivery. LeciPlexes were prepared by a one-step procedure and characterized using various techniques. Optimum LeciPlex preparation was incorporated into 1% methylcellulose gel and SP permeability was tested ex vivo in Sprague-Dawley rat skin. The maximum drug encapsulation efficiency obtained was 93.6 ± 6.9% and was dependent on the drug/phospholipid and surfactant/phospholipid ratios. A zeta potential of +49.3 ± 3.5 to +57.7 ± 3.3 mV and a size of 108 ± 25.3 to 668.5 ± 120.3 nm were observed for the LeciPlexes. FT-IR and DSC studies confirmed the incorporation of SP into the LeciPlexes through hydrophobic and hydrogen bonding interactions. SP release from the LeciPlex formulations was significantly slower than from the drug suspension. Cumulative SP permeated through rat skin from LeciPlex gel was about 2-fold higher than SP control gel. Cumulative SP deposited in the stratum corneum and other skin layers from the LeciPlex gel was about 1.8- and 2.6-fold higher than SP control gel, respectively. This new SP LeciPlex formulation is a promising carrier for the treatment of female acne.
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Affiliation(s)
- Ayman Salama
- Department of Pharmaceutics, Faculty of Pharmacy, University of Tabuk, Tabuk 71491, Saudi Arabia
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy (Boys), Al-Azhar University, Nasr City, Cairo 11751, Egypt; (M.B.); (M.E.)
| | - Mohamed Badran
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy (Boys), Al-Azhar University, Nasr City, Cairo 11751, Egypt; (M.B.); (M.E.)
| | - Mohammed Elmowafy
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy (Boys), Al-Azhar University, Nasr City, Cairo 11751, Egypt; (M.B.); (M.E.)
| | - Ghareb M. Soliman
- Department of Pharmaceutics, Faculty of Pharmacy, University of Tabuk, Tabuk 71491, Saudi Arabia
- Department of Pharmaceutics, Faculty of Pharmacy, Assiut University, Assiut 71526, Egypt
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264
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Fathi-Achachelouei M, Keskin D, Bat E, Vrana NE, Tezcaner A. Dual growth factor delivery using PLGA nanoparticles in silk fibroin/PEGDMA hydrogels for articular cartilage tissue engineering. J Biomed Mater Res B Appl Biomater 2019; 108:2041-2062. [PMID: 31872975 DOI: 10.1002/jbm.b.34544] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Revised: 11/28/2019] [Accepted: 12/08/2019] [Indexed: 12/13/2022]
Abstract
Degeneration of articular cartilage due to damages, diseases, or age-related factors can significantly decrease the mobility of the patients. Various tissue engineering approaches which take advantage of stem cells and growth factors in a three-dimensional constructs have been used for reconstructing articular tissue. Proliferative impact of basic fibroblast growth factor (bFGF) and chondrogenic differentiation effect of transforming growth factor-beta 1 (TGF-β1) over mesenchymal stem cells have previously been verified. In this study, silk fibroin (SF) and of poly(ethylene glycol) dimethacrylate (PEGDMA) were used to provide a versatile platform for preparing hydrogels with tunable mechanical, swelling and degradation properties through physical and chemical crosslinking as a microenvironment for chondrogenic differentiation in the presence of bFGF and TGF-β1 releasing nanoparticles (NPs) for the first time. Scaffolds with compressive moduli ranging from 95.70 ± 17.82 to 338.05 ± 38.24 kPa were obtained by changing both concentration PEGDMA and volume ratio of PEGDMA with 8% SF. Highest cell viability was observed in PEGDMA 10%-SF 8% (1:1) [PEG10-SF8(1:1)] hydrogel group. Release of bFGF and TGF-β1 within PEG10-SF8(1:1) hydrogels resulted in higher DNA and glycosaminoglycans amounts indicating synergistic effect of dual release over proliferation and chondrogenic differentiation of dental pulp stem cells in hydrogels, respectively. Our results suggested that simultaneous delivery of bFGF and TGF-β1 through utilization of PLGA NPs within PEG10-SF8(1:1) hydrogel provided a novel and versatile means for articular cartilage regeneration as they allow for dosage- and site-specific multiple growth factor delivery.
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Affiliation(s)
| | - Dilek Keskin
- Department of Biomedical Engineering, Middle East Technical University, Ankara, Turkey.,Center of Excellence in Biomaterials and Tissue Engineering (BIOMATEN), Middle East Technical University, Ankara, Turkey.,Department of Engineering Sciences, Middle East Technical University, Ankara, Turkey
| | - Erhan Bat
- Department of Biomedical Engineering, Middle East Technical University, Ankara, Turkey.,Department of Chemical Engineering, Middle East Technical University, Ankara, Turkey
| | - Nihal E Vrana
- Inserm UMR 1121, Strasbourg, France.,SPARTHA Medical, Strasbourg, France
| | - Aysen Tezcaner
- Department of Biomedical Engineering, Middle East Technical University, Ankara, Turkey.,Center of Excellence in Biomaterials and Tissue Engineering (BIOMATEN), Middle East Technical University, Ankara, Turkey.,Department of Engineering Sciences, Middle East Technical University, Ankara, Turkey
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265
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Tomoda BT, Corazza FG, Beppu MM, Lopes PS, Moraes MA. Silk fibroin membranes with self‐assembled globular structures for controlled drug release. J Appl Polym Sci 2019. [DOI: 10.1002/app.48763] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Bruno Thorihara Tomoda
- Department of Chemical EngineeringInstitute of Environmental, Chemical and Pharmaceutical Sciences, Universidade Federal de São Paulo Rua São Nicolau 210 Diadema Brazil
| | - Fulvio Gabriel Corazza
- Department of Pharmaceutical SciencesInstitute of Environmental, Chemical and Pharmaceutical Sciences, Universidade Federal de São Paulo Rua São Nicolau 210 Diadema Brazil
| | - Marisa Masumi Beppu
- School of Chemical Engineering, University of Campinas Avenida Albert Einstein 500 Campinas Brazil
| | - Patricia Santos Lopes
- Department of Pharmaceutical SciencesInstitute of Environmental, Chemical and Pharmaceutical Sciences, Universidade Federal de São Paulo Rua São Nicolau 210 Diadema Brazil
| | - Mariana Agostini Moraes
- Department of Chemical EngineeringInstitute of Environmental, Chemical and Pharmaceutical Sciences, Universidade Federal de São Paulo Rua São Nicolau 210 Diadema Brazil
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266
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Experiments and modeling of controlled release behavior of commercial and model polymer-drug formulations using dialysis membrane method. Drug Deliv Transl Res 2019; 10:515-528. [DOI: 10.1007/s13346-019-00696-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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267
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Graphene aerogel nanoparticles for in-situ loading/pH sensitive releasing anticancer drugs. Colloids Surf B Biointerfaces 2019; 186:110712. [PMID: 31846894 DOI: 10.1016/j.colsurfb.2019.110712] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Revised: 11/26/2019] [Accepted: 12/06/2019] [Indexed: 11/23/2022]
Abstract
Free polymer graphene aerogel nanoparticles (GA NPs) were synthesized by using reduction/aggregation of graphene oxide (GO) sheets in the presence of vitamin C (as a biocompatible reductant agent) at a low temperature (40 °C), followed by an effective sonication. Synthesis of GA NPs in doxorubicin hydrochloride (DOX)-containing solution results in the simultaneous synthesis and drug loading with higher performance (than that of the separately synthesized and loaded samples). To investigate the mechanism of loading and the capability of GA NPs in the loading of other drug structures, two groups of ionized (DOX, Amikacin sulfate and, d-glucosamine hydrochloride) and non-ionized (Paclitaxel (PTX)) drugs were examined. Furthermore, the relationship between the bipolar level of DOX solution (contributing to H-bonding of DOX and GO) and the amount of DOX loading was investigated. The DOX showed higher loading (>3 times) than PTX, as anticancer drugs. Since both DOX and PTX possess aromatic structures, the higher loading of DOX was assigned to its positive partial charge and ionized nature. Accordingly, other drugs (having positive partial charge and ionized nature, but no aromatic structure) such as Amikacin sulfate and d-glucosamine hydrochloride presented higher loading than PTX. These results indicated that although the π-π interactions induced by aromatic structures are important in drug loading, the electrostatic interaction of ionized drugs with GO (especially through H-bonding) is the dominant mechanism. DOX-loaded GANPs showed high pH-sensitive release (equivalent to the carrier weight) after 5 days, which can indicate benefits in tumor cell acidic microenvironments in-vivo.
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268
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Lobato-Aguilar HA, Lizama-Uc G, Uribe-Calderon JA, Cauich-Rodriguez J, Rodriguez-Fuentes N, Cervantes-Uc JM. Antibacterial properties and release kinetics of chlorhexidine diacetate from montmorillonite and palygorskite clays. J Biomater Appl 2019; 34:1052-1058. [PMID: 31775557 DOI: 10.1177/0885328219891710] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Organoclays were prepared by means of cation-exchange reactions using different concentrations of chlorhexidine diacetate and two different types of clays: montmorillonite and palygorskite. The antibacterial activity against Escherichia coli was evaluated by means of disk diffusion tests as well as through bacterial growth inhibition (monitored by optical density measurements) in Luria broth media. Results indicate that modified palygorskites showed a greater antibacterial activity than those exhibited by modified montmorillonite, as latter only displayed antibacterial properties at the highest chlorhexidine diacetate loading. Modeling of chlorhexidine release was also performed and the models best described the drug release phenomena depended on the type of clay; being the Higuchi model and Korsemeyer–Peppas model for montmorillonite, whereas the zero-order model and Korsemeyer–Peppas model for palygorskite.
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269
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Ali Mohammadpoor S, Akbari S, Sadrjahani M, Nourpanah P. Fabrication of electrospun ibuprofen-loaded poly(vinyl alcohol)/hyper-branched poly(ethylenimine) fibers and their release behaviors. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2019; 31:261-275. [DOI: 10.1080/09205063.2019.1685759] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- S. Ali Mohammadpoor
- Department of Textile Engineering, Amirkabir University of Technology, Tehran, Iran
- Technical Textile Engineering group, ACECR, Amirkabir University of Technology Branch, Tehran, Iran
| | - Somaye Akbari
- Department of Textile Engineering, Amirkabir University of Technology, Tehran, Iran
| | - Mehdi Sadrjahani
- Department of Textile Engineering, Amirkabir University of Technology, Tehran, Iran
| | - Parviz Nourpanah
- Department of Textile Engineering, Amirkabir University of Technology, Tehran, Iran
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270
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Wadi A, Abdel-Hafez M, Husseini GA, Paul V. Multi-Model Investigation and Adaptive Estimation of the Acoustic Release of a Model Drug From Liposomes. IEEE Trans Nanobioscience 2019; 19:68-77. [PMID: 31714230 DOI: 10.1109/tnb.2019.2950344] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
This paper researches a suitable mathematical model that can reliably predict the release of a model drug (namely calcein) from biologically targeted liposomal nanocarriers triggered by ultrasound. Using mathematical models, curve fitting is performed on a set of five experimental acoustic drug release runs from Albumin-, Estrone-, and RGD-based Drug Delivery Systems (DDS). The three moieties were chosen to target specific cancers using receptor-mediated endocytosis. The best-fitting mathematical model is then enhanced using a Kalman filtering (KF) algorithm to account for the statistics of the dynamic and measurements noise sequences in predicted drug release. Unbiased drug-release estimates are realized by implementing an online noise identification algorithm. The algorithm is first deployed in a simulated environment in which it was rigorously tested and compared with the correct solution. Then, the algorithm was used to process the five experimental datasets. The results suggest that the Adaptive Kalman Filter (AKF) is exceptionally good at handling drug release estimation problems with a priori unknown or with changing noise covariances. In comparison with the KF, the AKF approach exhibited as low as a 69% reduction in the level of error in estimating the drug release state. Finally, the proposed algorithm is not computationally demanding and is capable of online estimation tasks.
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271
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Bao Q, Zou Y, Wang Y, Kozak D, Choi S, Burgess DJ. Drug release testing of long-acting intrauterine systems. J Control Release 2019; 316:349-358. [PMID: 31733294 DOI: 10.1016/j.jconrel.2019.11.015] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 11/02/2019] [Accepted: 11/13/2019] [Indexed: 02/01/2023]
Abstract
Performance evaluation of polydimethylsiloxane (PDMS) based long-acting (e.g. 3-5 years) levonorgestrel (LNG) intrauterine systems (IUSs), such as Mirena®, is challenging due to their complex formulation, locally-acting feature, and extremely long duration of drug release. To achieve such long-term release, a large amount of drug (up to 52 mg in Mirena®) must be incorporated as a drug reservoir in the IUS. Consequently, dose dumping or unanticipated changes in the LNG-IUS in vivo release characteristics may give rise to adverse product safety and efficacy. Therefore, it is crucial to understand, and have appropriate control over, the physicochemical properties and in vitro release characteristics of these products. This requires an understanding of the LNG-IUSs drug release mechanism and the development of a sensitive yet robust in vitro release testing method. There have been no previous reports on in vitro drug release and the release mechanism from LNG-IUSs. This is probably a consequence of the extremely slow drug release rate of LNG-IUSs under real-time in-use conditions (e.g., 3-5 years) and therefore it is impractical to obtain complete release profiles (e.g. there is only 60% release in 5 years for Mirena®). Therefore, the development of appropriate accelerated in vitro release methods is imperative. Following preparation of LNG-IUSs, similar to Mirena®, real-time release was tested in (0.9% w/v NaCl) media in a water shaker bath at 37 °C for over 2 years. Addition of surfactant (sodium dodecyl sulfate (SDS)), elevation of temperature, addition of organic solvents (ethanol (EtOH), isopropanol (IPA), tert-butanol (TBA) and tetrahydrofuran (THF)) and a combination thereof were utilized as release media to accelerate drug release for LNG-IUSs. Complete drug release was achieved in 32 and 672 days in THF and TBA hydro-organic media, respectively. The release profile in THF was considered too fast as it may result in change of release mechanism, whereas the release profile in TBA was deemed suitable following model fitting. Model fitting was performed to understand the release characteristics as well as the release mechanisms. The release rate in the hydro-alcoholic media was linearly proportional to the swelling ratio of the PDMS in the corresponding organic solvents. Zero-order, first-order and two-phase models were utilized to fit the release profiles obtained under the different release conditions. The data analysis was comparable using the parameters from different models given the high R2 values. However, the two-phase model was better in terms of the release mechanism of the LNG-IUSs considering the full drug release profile. The present study will facilitate the process of granting of biowaivers through an in vitro approach, thus reducing the necessity for clinical studies. In addition, it will help reduce the regulatory burden without sacrificing product quality of LNG-IUS products.
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Affiliation(s)
- Quanying Bao
- University of Connecticut, School of Pharmacy, Storrs, CT 06269, United States of America
| | - Yuan Zou
- Office of Research and Standards, Office of Generic Drugs, Center for Drug Evaluation and Research, FDA, Silver Spring, MD 20993, United States of America
| | - Yan Wang
- Office of Research and Standards, Office of Generic Drugs, Center for Drug Evaluation and Research, FDA, Silver Spring, MD 20993, United States of America
| | - Darby Kozak
- Office of Research and Standards, Office of Generic Drugs, Center for Drug Evaluation and Research, FDA, Silver Spring, MD 20993, United States of America
| | - Stephanie Choi
- Office of Research and Standards, Office of Generic Drugs, Center for Drug Evaluation and Research, FDA, Silver Spring, MD 20993, United States of America
| | - Diane J Burgess
- University of Connecticut, School of Pharmacy, Storrs, CT 06269, United States of America.
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272
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Tamani F, Bassand C, Hamoudi MC, Danede F, Willart JF, Siepmann F, Siepmann J. Mechanistic explanation of the (up to) 3 release phases of PLGA microparticles: Diprophylline dispersions. Int J Pharm 2019; 572:118819. [PMID: 31726196 DOI: 10.1016/j.ijpharm.2019.118819] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 10/17/2019] [Accepted: 10/21/2019] [Indexed: 01/29/2023]
Abstract
The aim of this study was to better understand the root causes for the (up to) 3 drug release phases observed with poly (lactic-co-glycolic acid) (PLGA) microparticles containing diprophylline particles: The 1st release phase ("burst release"), 2nd release phase (with an "about constant release rate") and 3rd release phase (which is again rapid and leads to complete drug exhaust). The behavior of single microparticles was monitored upon exposure to phosphate buffer pH 7.4, in particular with respect to their drug release and swelling behaviors. Diprophylline-loaded PLGA microparticles were prepared with a solid-in-oil-in-water solvent extraction/evaporation method. Tiny drug crystals were rather homogeneously distributed throughout the polymer matrix after manufacturing. Batches with "small" (63 µm), "medium-sized" (113 µm) and "large" (296 µm) microparticles with a practical drug loading of 5-7% were prepared. Importantly, each microparticle releases the drug "in its own way", depending on the exact distribution of the tiny drug crystals within the system. During the burst release, drug crystals with direct surface access rapidly dissolve. During the 2nd release phase tiny drug crystals (often) located in surface near regions which undergo swelling, are likely released. During the 3rd release phase, the entire microparticle undergoes substantial swelling. This results in high quantities of water present throughout the system, which becomes "gel-like". Consequently, the drug crystals dissolve, and the dissolved drug molecules rather rapidly diffuse through the highly swollen polymer gel.
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Affiliation(s)
- F Tamani
- Univ. Lille, Inserm, CHU Lille, U1008, F-59000 Lille, France
| | - C Bassand
- Univ. Lille, Inserm, CHU Lille, U1008, F-59000 Lille, France
| | - M C Hamoudi
- Univ. Lille, Inserm, CHU Lille, U1008, F-59000 Lille, France
| | - F Danede
- Univ. Lille, USTL UMET UMR CNRS 8207, F-59650 Villeneuve d'Ascq, France
| | - J F Willart
- Univ. Lille, USTL UMET UMR CNRS 8207, F-59650 Villeneuve d'Ascq, France
| | - F Siepmann
- Univ. Lille, Inserm, CHU Lille, U1008, F-59000 Lille, France
| | - J Siepmann
- Univ. Lille, Inserm, CHU Lille, U1008, F-59000 Lille, France.
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273
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Synthesis, biology, computational studies and in vitro controlled release of new isoniazid-based adamantane derivatives. Future Med Chem 2019. [DOI: 10.4155/fmc-2019-0038] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Aim: There is a necessity for new drugs to be more efficient than today's standard due to the emergence of drug-resistant strains of Mycobacterium tuberculosis (Mtb) Results/methodology: 12 new isoniazid-based adamantane derivatives were synthesized and tested for their antitubercular activity. The pharmacological test results and the aqueous dissolution profile of representative examples of the new molecules are in agreement with the computational results obtained from docking poses and molecular dynamics simulations on the tested compounds. Conclusion: Among their congeners, the adamantane isonicotinoyl hydrazones Ia and Ih exhibit the best antitubercular activity (MIC = 0.04 μg/ml) and the lowest cytotoxicity (selectivity index ≥2500). These results are useful for in future in vivo studies.
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274
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275
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Qureshi D, Nayak SK, Maji S, Anis A, Kim D, Pal K. Environment sensitive hydrogels for drug delivery applications. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.109220] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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276
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Gupta PK, Tripathi SK, Pappuru S, Chabattula SC, Govarthanan K, Gupta S, Biswal BK, Chakraborty D, Verma RS. Metal-free semi-aromatic polyester as nanodrug carrier: A novel tumor targeting drug delivery vehicle for potential clinical application. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 107:110285. [PMID: 31761245 DOI: 10.1016/j.msec.2019.110285] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Revised: 08/09/2019] [Accepted: 10/05/2019] [Indexed: 12/19/2022]
Abstract
Polyester nanomaterials have been widely used in drug delivey application from a longer period of time. This study reports the synthesis of metal-free semi-aromatic polyester (SAP) nanomaterial for drug delivery and evaluate its in vivo acute and systemic toxicity for potential clinical application. The ring opening coplymerization of commercially available cyclohexene oxide (CHO) and phthalic anhydride (PA) monomers was carried out to synthesize fully alternating poly(CHO-co-PA) copolymer using metal-free activators. The obtained low Mn SAP was found to be biocompatible, hemocompataible and biodegradable nature. This copolymer was first-time used to fabricate curcumin (CUR) loaded nanoparticles (NPs). These NPs were physicochemically characterized by thermogravimetric analyzer (TGA), X-ray diffraction (XRD), and UV/visible spectrophotometer analysis. Further, these negatively charged core-shell spherical NPs exhibited slow sustained release behavior of CUR with anomalous transport and further displayed its higher intracellular uptake in SiHa cells at different time-periods compared to free CUR. In vitro anti-cancer therapeutic effects of free CUR and poly(CHO-alt-PA)-CUR NPs were evaluated on different cancer cells. We observed the increased cytotoxicity of CUR NPs with low IC50 values compared to free CUR. These results were further substantiated with ex vivo data where, a significant reduction was observed in CUR NPs treated tumor spheroid's size as compared to free CUR. Furthermore, the different doses of metal-free poly(CHO-alt-PA) nanomaterial were tested for its acute and systemic toxicity in BALB/c mice. We did not observe any significant toxicity of tested nanomaterial on vital organs, blood cells and the body weight of mice. Our study suggest that this metal-free SAP nanomaterial can be used for potential clinical application.
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Affiliation(s)
- Piyush Kumar Gupta
- Stem Cell and Molecular Biology Laboratory, Bhupat and Jyoti Mehta School of Biosciences, Department of Biotechnology, Indian Institute of Technology Madras, Chennai, 600036, Tamilnadu, India
| | - Surya Kant Tripathi
- Cancer Drug Resistance Laboratory, Department of Life Science, National Institute of Technology-Rourkela, Rourkela, 769008, Odisha, India
| | - Sreenath Pappuru
- Organometallic and Polymer Chemistry Laboratory, Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, Tamilnadu, India
| | - Siva Chander Chabattula
- Stem Cell and Molecular Biology Laboratory, Bhupat and Jyoti Mehta School of Biosciences, Department of Biotechnology, Indian Institute of Technology Madras, Chennai, 600036, Tamilnadu, India
| | - Kavitha Govarthanan
- Stem Cell and Molecular Biology Laboratory, Bhupat and Jyoti Mehta School of Biosciences, Department of Biotechnology, Indian Institute of Technology Madras, Chennai, 600036, Tamilnadu, India
| | - Santosh Gupta
- Stem Cell and Molecular Biology Laboratory, Bhupat and Jyoti Mehta School of Biosciences, Department of Biotechnology, Indian Institute of Technology Madras, Chennai, 600036, Tamilnadu, India
| | - Bijesh Kumar Biswal
- Cancer Drug Resistance Laboratory, Department of Life Science, National Institute of Technology-Rourkela, Rourkela, 769008, Odisha, India
| | - Debashis Chakraborty
- Organometallic and Polymer Chemistry Laboratory, Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, Tamilnadu, India
| | - Rama Shanker Verma
- Stem Cell and Molecular Biology Laboratory, Bhupat and Jyoti Mehta School of Biosciences, Department of Biotechnology, Indian Institute of Technology Madras, Chennai, 600036, Tamilnadu, India.
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277
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Cardoso T, Gonçalves A, Estevinho BN, Rocha F. Potential food application of resveratrol microparticles: Characterization and controlled release studies. POWDER TECHNOL 2019. [DOI: 10.1016/j.powtec.2019.07.079] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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278
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Influence of mesoporous silica on powder flow and electrostatic properties on short and long term. J Drug Deliv Sci Technol 2019. [DOI: 10.1016/j.jddst.2019.101192] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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279
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Li X, Wang J, Li S, Liu Z, Zheng Z, Zhang Y. Development and Evaluation of Multifunctional Poly(Lactic-co-glycolic acid) Nanoparticles Embedded in Carboxymethyl β-Glucan Porous Microcapsules as a Novel Drug Delivery System for Gefitinib. Pharmaceutics 2019; 11:E469. [PMID: 31547272 PMCID: PMC6781315 DOI: 10.3390/pharmaceutics11090469] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Revised: 09/08/2019] [Accepted: 09/09/2019] [Indexed: 12/20/2022] Open
Abstract
In this study, a new kind of folic acid (FA)-conjugated and chitosan (CS)-coated poloxamer 407 (P407)/poly(lactic-co-glycolic acid) (PLGA) nanoparticles (NPs), FCPP NPs, were prepared, and further micro-encapsulated by carboxymethyl β-glucan microcapsules (MCs) to produce a multifunctional system of NPs embedded in MCs (NEMs) for potential lung tumor-targeted delivery of gefitinib. The prepared gefitinib-loaded FCPP (GFB/FCPP) NPs showed a hydrodynamic diameter of 255.4 ± 14.5 nm and existed in an amorphous state. After encapsulation in carboxymethyl β-glucan MCs, the GFB/FCPP-based NEMs (GFB/FCPP-NEMs) also exhibited a spherical morphology with a median diameter (d50) of around 2.2 μm. After hydration, GFB/FCPP- NEMs can quickly dissociate into its primary particles, GFB/FCPP NPs. Our in vitro drug release study revealed that these GFB/FCPP-NEMs exhibited a pH-responsive prolonged release property. In addition, the cellular uptake study demonstrated that FCPP-NEMs serve as an efficient carrier to enhance the delivery of the entrapped drug into the target lung tumor cells. Moreover, the GFB/FCPP-NEMs induced a superior cytotoxic effect compared with free gefitinib. The inhibitory concentration to achieve 50% cell death (IC50) of GFB/FCPP-NEMs in A549 cells was 3.82-fold lower than that of free gefitinib. According to these results, FCPP-NEMs hold a great potential as a multifunctional and high-performance biomaterial for lung tumor targeting delivery, pH-responsive sustained release, facilitated cellular uptake, and enhanced antitumor effect of antitumor drugs, like gefitinib.
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Affiliation(s)
- Xiaonan Li
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou 221004, China.
- Department of Pharmaceutics, School of Pharmacy, Xuzhou Medical University, Xuzhou 221004, China.
| | - Jinglei Wang
- Department of Pharmaceutics, School of Pharmacy, Xuzhou Medical University, Xuzhou 221004, China.
| | - Shang Li
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou 221004, China.
| | - Zhaorong Liu
- Department of Pharmaceutics, School of Pharmacy, Xuzhou Medical University, Xuzhou 221004, China.
| | - Zhiru Zheng
- Department of Pharmaceutics, School of Pharmacy, Xuzhou Medical University, Xuzhou 221004, China.
| | - Yanzhuo Zhang
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou 221004, China.
- Department of Pharmaceutics, School of Pharmacy, Xuzhou Medical University, Xuzhou 221004, China.
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280
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Lowinger MB, Ormes JD, Su Y, Small JH, Williams RO, Zhang F. How broadly can poly(urethane)-based implants be applied to drugs of varied properties? Int J Pharm 2019; 568:118550. [DOI: 10.1016/j.ijpharm.2019.118550] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 07/18/2019] [Accepted: 07/19/2019] [Indexed: 01/02/2023]
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281
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Toll-Like Receptors and Relevant Emerging Therapeutics with Reference to Delivery Methods. Pharmaceutics 2019; 11:pharmaceutics11090441. [PMID: 31480568 PMCID: PMC6781272 DOI: 10.3390/pharmaceutics11090441] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 08/24/2019] [Accepted: 08/28/2019] [Indexed: 02/06/2023] Open
Abstract
The built-in innate immunity in the human body combats various diseases and their causative agents. One of the components of this system is Toll-like receptors (TLRs), which recognize structurally conserved molecules derived from microbes and/or endogenous molecules. Nonetheless, under certain conditions, these TLRs become hypofunctional or hyperfunctional, thus leading to a disease-like condition because their normal activity is compromised. In this regard, various small-molecule drugs and recombinant therapeutic proteins have been developed to treat the relevant diseases, such as rheumatoid arthritis, psoriatic arthritis, Crohn’s disease, systemic lupus erythematosus, and allergy. Some drugs for these diseases have been clinically approved; however, their efficacy can be enhanced by conventional or targeted drug delivery systems. Certain delivery vehicles such as liposomes, hydrogels, nanoparticles, dendrimers, or cyclodextrins can be employed to enhance the targeted drug delivery. This review summarizes the TLR signaling pathway, associated diseases and their treatments, and the ways to efficiently deliver the drugs to a target site.
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282
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Cubayachi C, Lemos CN, Pereira F, Dias K, Herculano RD, de Freitas O, Lopez RF. Silk fibroin films stabilizes and releases bioactive insulin for the treatment of corneal wounds. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.06.022] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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283
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Multi-walled carbon nanotube-incorporating electrospun composite fibrous mats for controlled drug release profile. Int J Pharm 2019; 568:118513. [DOI: 10.1016/j.ijpharm.2019.118513] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 07/08/2019] [Accepted: 07/09/2019] [Indexed: 12/20/2022]
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284
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Bernin D, Marucci M, Boissier C, Hjärtstam J, Olsson U, Abrahmsén-Alami S. Real time MRI to elucidate the functionality of coating films intended for modified release. J Control Release 2019; 311-312:117-124. [PMID: 31454531 DOI: 10.1016/j.jconrel.2019.08.025] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2019] [Revised: 08/22/2019] [Accepted: 08/23/2019] [Indexed: 01/08/2023]
Abstract
Polymer films based on mixtures of ethyl cellulose (EC) and hydroxypropyl cellulose (HPC) have been widely used to coat pellets and tablets to modify the release profile of drugs. For three different EC/HPC films we used 1H and 19F MRI in combination with a designed release cell to monitor the drug, polymer and water in 5 dimensional (5D) datasets; three spatial, one diffusion or relaxation and a temporal dimension, in real time. We observed that the water inflow through the films correlated with the initiation of the dissolution of the drug in the tablet beneath the film. Leaching of the pore forming HPC further accelerated water penetration and resulted in a drug release onset after a hydrostatic pressure was generated below the film indicated by positional changes of the film. For the more permeable film, both water ingress and drug egress showed a large variability of release over the film surface indicating the heterogeneity of the system. Furthermore, the 1H diffusion dataset revealed the formation of a gel layer of HPC at the film surface. We conclude that the setup presented provides a significant level of details, which are not achieved with traditional methods.
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Affiliation(s)
- Diana Bernin
- Swedish NMR Centre, University of Gothenburg, SE-41390 Gothenburg, Sweden; Department of Chemistry and Chemical Engineering, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden.
| | - Mariagrazia Marucci
- Pharmaceutical Technology and Development, AstraZeneca Gothenburg, SE-43183 Mölndal, Sweden
| | - Catherine Boissier
- Pharmaceutical Technology and Development, AstraZeneca Gothenburg, SE-43183 Mölndal, Sweden; Biopharmaceuticals R & D, AstraZeneca, Gothenburg, SE-43183 Mölndal, Sweden
| | - Johan Hjärtstam
- Pharmaceutical Technology and Development, AstraZeneca Gothenburg, SE-43183 Mölndal, Sweden
| | - Ulf Olsson
- Physical Chemistry, Lund University, Box 124, SE-22100 Lund, Sweden
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285
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A Systematic Experimental and Computational Analysis of Commercially Available Aliphatic Polyesters. APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9163397] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Aliphatic polyesters, such as polylactic acid (PLA), polyglycolic acid (PGA), and their copolymer polylactic-co-glycolic acid (PLGA) have become an established choice in the biomedical field in a wide range of applications, from nanoparticles for local drug delivery to bone fixation screws, and, hence, in a huge spectrum of uses in different medical devices currently available on the market worldwide. The reason for their popularity lies in their combination of interesting peculiarities: in situ degradation, intrinsic biocompatibility (degradation products are recognized and metabolized), processability with standard industrial technologies, and tailorable properties. The knowledge of the degradation rate is an essential requirement for optimal device design when, e.g., fast adsorption time is required, or mechanical properties must be assured over a given time span. In this regard, experimental studies can be time- and money-consuming, due to the time scales (weeks–months) involved in the hydrolysis process. This work aims at providing to both industry and academia robust guidelines for optimal material choice through a systematic experimental and computational analysis of most commonly used PLGA formulations (selected from commercially available products), evaluating the degradation kinetics and its impact on polymer properties.
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286
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Arbain NH, Salim N, Masoumi HRF, Wong TW, Basri M, Abdul Rahman MB. In vitro evaluation of the inhalable quercetin loaded nanoemulsion for pulmonary delivery. Drug Deliv Transl Res 2019. [PMID: 29541999 DOI: 10.1007/s13346-018-0509-5] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Bioavailability of quercetin, a flavonoid potentially known to combat cancer, is challenging due to hydrophobic nature. Oil-in-water (O/W) nanoemulsion system could be used as nanocarrier for quercertin to be delivered to lung via pulmonary delivery. The novelty of this nanoformulation was introduced by using palm oil ester/ricinoleic acid as oil phase which formed spherical shape nanoemulsion as measured by transmission electron microscopy and Zetasizer analyses. High energy emulsification method and D-optimal mixture design were used to optimize the composition towards the volume median diameter. The droplet size, polydispersity index, and zeta potential of the optimized formulation were 131.4 nm, 0.257, and 51.1 mV, respectively. The formulation exhibited high drug entrapment efficiency and good stability against phase separation and storage at temperature 4 °C for 3 months. It was discovered that the system had an acceptable median mass aerodynamic diameter (3.09 ± 0.05 μm) and geometric standard deviation (1.77 ± 0.03) with high fine particle fraction (90.52 ± 0.10%), percent dispersed (83.12 ± 1.29%), and percent inhaled (81.26 ± 1.28%) for deposition in deep lung. The in vitro release study demonstrated that the sustained release pattern of quercetin from naneomulsion formulation up to 48 h of about 26.75% release and it was in adherence to Korsmeyer's Peppas mechanism. The cytotoxicity study demonstrated that the optimized nanoemulsion can potentially induce cyctotoxicity towards A549 lung cancer cells without affecting the normal cells. These results of the study suggest that nanoemulsion is a potential carrier system for pulmonary delivery of molecules with low water solubility like quercetin.
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Affiliation(s)
- Noor Hafizah Arbain
- Integrated Chemical BioPhysics Research, Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, UPM, 43400, Serdang, Selangor, Malaysia
| | - Norazlinaliza Salim
- Integrated Chemical BioPhysics Research, Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, UPM, 43400, Serdang, Selangor, Malaysia
| | - Hamid Reza Fard Masoumi
- Integrated Chemical BioPhysics Research, Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, UPM, 43400, Serdang, Selangor, Malaysia
| | - Tin Wui Wong
- Non-Destructive Biomedical and Pharmaceutical Research Centre, iPROMISE, Universiti Teknologi MARA, 42300, Puncak Alam, Selangor, Malaysia
| | - Mahiran Basri
- Integrated Chemical BioPhysics Research, Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, UPM, 43400, Serdang, Selangor, Malaysia
| | - Mohd Basyaruddin Abdul Rahman
- Integrated Chemical BioPhysics Research, Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, UPM, 43400, Serdang, Selangor, Malaysia.
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287
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Di Prima G, Licciardi M, Carfì Pavia F, Lo Monte AI, Cavallaro G, Giammona G. Microfibrillar polymeric ocular inserts for triamcinolone acetonide delivery. Int J Pharm 2019; 567:118459. [DOI: 10.1016/j.ijpharm.2019.118459] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Revised: 06/19/2019] [Accepted: 06/23/2019] [Indexed: 01/17/2023]
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288
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289
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290
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Shamsi M, Mohammadi A, Manshadi MK, Sanati-Nezhad A. Mathematical and computational modeling of nano-engineered drug delivery systems. J Control Release 2019; 307:150-165. [DOI: 10.1016/j.jconrel.2019.06.014] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Revised: 06/10/2019] [Accepted: 06/12/2019] [Indexed: 12/20/2022]
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291
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Iordanskii A, Karpova S, Olkhov A, Borovikov P, Kildeeva N, Liu Y. Structure-morphology impact upon segmental dynamics and diffusion in the biodegradable ultrafine fibers of polyhydroxybutyrate-polylactide blends. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.05.012] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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292
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Phaechamud T, Senarat S, Puyathorn N, Praphanwittaya P. Solvent exchange and drug release characteristics of doxycycline hyclate-loaded bleached shellac in situ-forming gel and -microparticle. Int J Biol Macromol 2019; 135:1261-1272. [DOI: 10.1016/j.ijbiomac.2018.11.098] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Accepted: 11/12/2018] [Indexed: 12/13/2022]
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293
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Shah NK, Wang Z, Gupta SK, Le Campion A, Meenach SA. Sustained release of a model water-soluble compound via dry powder aerosolizable acetalated dextran microparticles. Pharm Dev Technol 2019; 24:1133-1143. [PMID: 31327289 DOI: 10.1080/10837450.2019.1641727] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Objective: To design and characterize aerosol microparticles (MP) to provide sustained release of the water-soluble compound sulforhodamine B (SRB) and achieve effective aerosol dispersion. Significance: Modulating the release of water-soluble compounds remains a challenge in pulmonary drug delivery. Methods: SRB and water made up an aqueous solution, while acetalated dextran (Ac-Dex) and isopropyl alcohol made up an organic solution. The two solutions were mixed together, and the solution was spray dried to produce MP. MP were characterized for morphology, size, release kinetics, aerosol dispersion, and cellular interactions. Results: Ac-Dex MP exhibited corrugated morphology and aerodynamic diameters from 2.06 to 2.86 μm. MP deposited in all stages of a Next Generation Impactor, with >90% fine particle fraction. MP exhibited encapsulation efficiencies >129% with SRB loading values up to 16.7 μg SRB/mg MP. MP exhibited sustained release of SRB at pH 7 and fast release at pH 5. In vitro experiments showed minimal cytotoxicity, successful uptake of MP in epithelial cells, and no disruption to the integrity of epithelial monolayers. Conclusions: Ac-Dex MP systems demonstrated the ability to provide sustained the release of a water-soluble therapeutic in addition to effective aerosol dispersion for pulmonary applications.
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Affiliation(s)
- Nishan K Shah
- College of Pharmacy, Department of Biomedical and Pharmaceutical Sciences, University of Rhode Island , Kingston , RI , USA
| | - Zimeng Wang
- College of Engineering, Department of Chemical Engineering, University of Rhode Island , Kingston , RI , USA
| | - Sweta K Gupta
- College of Engineering, Department of Chemical Engineering, University of Rhode Island , Kingston , RI , USA
| | - Andrew Le Campion
- College of Engineering, Department of Chemical Engineering, University of Rhode Island , Kingston , RI , USA
| | - Samantha A Meenach
- College of Pharmacy, Department of Biomedical and Pharmaceutical Sciences, University of Rhode Island , Kingston , RI , USA.,College of Engineering, Department of Chemical Engineering, University of Rhode Island , Kingston , RI , USA
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294
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Gao F, Zhou H, Shen Z, Qiu H, Hao L, Chen H, Zhou X. Synergistic antimicrobial activities of tea tree oil loaded on mesoporous silica encapsulated by polyethyleneimine. J DISPER SCI TECHNOL 2019. [DOI: 10.1080/01932691.2019.1637755] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Fan Gao
- Key Laboratory of Agricultural Green Fine Chemicals of Guangdong Higher Education Institution, School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, Guangdong, China
| | - Hongjun Zhou
- Key Laboratory of Agricultural Green Fine Chemicals of Guangdong Higher Education Institution, School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, Guangdong, China
| | - Zhichuan Shen
- Key Laboratory of Agricultural Green Fine Chemicals of Guangdong Higher Education Institution, School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, Guangdong, China
| | - Huanbin Qiu
- Key Laboratory of Agricultural Green Fine Chemicals of Guangdong Higher Education Institution, School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, Guangdong, China
| | - Li Hao
- Key Laboratory of Agricultural Green Fine Chemicals of Guangdong Higher Education Institution, School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, Guangdong, China
| | - Huayao Chen
- Key Laboratory of Agricultural Green Fine Chemicals of Guangdong Higher Education Institution, School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, Guangdong, China
| | - Xinhua Zhou
- Key Laboratory of Agricultural Green Fine Chemicals of Guangdong Higher Education Institution, School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, Guangdong, China
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295
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Delaney LJ, MacDonald D, Leung J, Fitzgerald K, Sevit AM, Eisenbrey JR, Patel N, Forsberg F, Kepler CK, Fang T, Kurtz SM, Hickok NJ. Ultrasound-triggered antibiotic release from PEEK clips to prevent spinal fusion infection: Initial evaluations. Acta Biomater 2019; 93:12-24. [PMID: 30826477 PMCID: PMC6764442 DOI: 10.1016/j.actbio.2019.02.041] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Revised: 02/21/2019] [Accepted: 02/26/2019] [Indexed: 01/01/2023]
Abstract
Despite aggressive peri-operative antibiotic treatments, up to 10% of patients undergoing instrumented spinal surgery develop an infection. Like most implant-associated infections, spinal infections persist through colonization and biofilm formation on spinal instrumentation, which can include metal screws and rods for fixation and an intervertebral cage commonly comprised of polyether ether ketone (PEEK). We have designed a PEEK antibiotic reservoir that would clip to the metal fixation rod and that would achieve slow antibiotic release over several days, followed by a bolus release of antibiotics triggered by ultrasound (US) rupture of a reservoir membrane. We have found using human physiological fluid (synovial fluid), that higher levels (100–500 μg) of vancomycin are required to achieve a marked reduction in adherent bacteria vs. that seen in the common bacterial medium, trypticase soy broth. To achieve these levels of release, we applied a polylactic acid coating to a porous PEEK puck, which exhibited both slow and US-triggered release. This design was further refined to a one-hole or two-hole cylindrical PEEK reservoir that can clip onto a spinal rod for clinical use. Short-term release of high levels of antibiotic (340 ± 168 μg), followed by US-triggered release was measured (7420 ± 2992 μg at 48 h). These levels are sufficient to prevent adhesion of Staphylococcus aureus to implant materials. This study demonstrates the feasibility of an US-mediated antibiotic delivery device, which could be a potent weapon against spinal surgical site infection.
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Affiliation(s)
- Lauren J Delaney
- Department of Radiology, Thomas Jefferson University, 132 S. 10th Street, Philadelphia, PA 19107, USA
| | - Daniel MacDonald
- School of Biomedical Engineering, Science and Health Systems, Drexel University, 3141 Chestnut Street, Philadelphia, PA 19104, USA
| | - Jay Leung
- School of Biomedical Engineering, Science and Health Systems, Drexel University, 3141 Chestnut Street, Philadelphia, PA 19104, USA
| | - Keith Fitzgerald
- Department of Orthopaedic Surgery, Thomas Jefferson University, 1015 Walnut Street, Philadelphia, PA 19107, USA
| | - Alex M Sevit
- School of Biomedical Engineering, Science and Health Systems, Drexel University, 3141 Chestnut Street, Philadelphia, PA 19104, USA
| | - John R Eisenbrey
- Department of Radiology, Thomas Jefferson University, 132 S. 10th Street, Philadelphia, PA 19107, USA
| | - Neil Patel
- Department of Orthopaedic Surgery, Thomas Jefferson University, 1015 Walnut Street, Philadelphia, PA 19107, USA
| | - Flemming Forsberg
- Department of Radiology, Thomas Jefferson University, 132 S. 10th Street, Philadelphia, PA 19107, USA
| | - Christopher K Kepler
- Department of Orthopaedic Surgery, Thomas Jefferson University, 1015 Walnut Street, Philadelphia, PA 19107, USA; The Rothman Institute, Thomas Jefferson University, 925 Chestnut Street, Philadelphia, PA 19107, USA
| | - Taolin Fang
- Department of Orthopaedic Surgery, Thomas Jefferson University, 1015 Walnut Street, Philadelphia, PA 19107, USA; The Rothman Institute, Thomas Jefferson University, 925 Chestnut Street, Philadelphia, PA 19107, USA
| | - Steven M Kurtz
- School of Biomedical Engineering, Science and Health Systems, Drexel University, 3141 Chestnut Street, Philadelphia, PA 19104, USA; Exponent, Inc., 3440 Market Street Suite 600, Philadelphia, PA 19104, USA
| | - Noreen J Hickok
- Department of Orthopaedic Surgery, Thomas Jefferson University, 1015 Walnut Street, Philadelphia, PA 19107, USA.
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296
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Release mechanism of lipid nanoparticles immobilized within alginate beads influenced by nanoparticle size and alginate concentration. Colloid Polym Sci 2019. [DOI: 10.1007/s00396-019-04538-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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297
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D'Hondt M, Verbeke F, Wuytens P, Skirtach A, De Spiegeleer B, Wynendaele E. Hot-Melt Preparation of a Non-Biodegradable Peptide Implant: A Proof of Principle. Protein Pept Lett 2019; 26:691-701. [PMID: 31215364 DOI: 10.2174/0929866526666190619113724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 04/30/2019] [Accepted: 05/09/2019] [Indexed: 11/22/2022]
Abstract
BACKGROUND Both biodegradable and non-biodegradable peptide-loaded implants are already developed for the long-term treatment of patients, thereby reducing the frequency of drug administration. To further improve peptide formulation, extending the scope of implant-based drug delivery systems towards other polymers and processing techniques is highly interesting. OBJECTIVE In this study, as a proof-of-principle, the feasibility of hot-melt processing of a peptide active pharmaceutical ingredient was assessed by developing a non-biodegradable poly(ethylenevinyl acetate) (33% VA) implant loaded with 20% (w/w) buserelin acetate. METHODS Cross-sectional implant characterization was performed by Raman microscopy. The stability of buserelin acetate in the polymeric matrix was evaluated for 3 months under ICH stability conditions and the quantity as well as the degradation products analyzed using LC-UV methods. An in vitro dissolution study was performed as well and buserelin acetate and its degradants analyzed using the same chromatographic methods. RESULTS No significant quantities of buserelin acetate-related degradation products were formed during the hot-melt preparation as well as during the stability study. Together with the consistent buserelin acetate assay values over time, chemical peptide stability was thus demonstrated. The in vitro buserelin acetate release from the implant was found to be diffusion-controlled after an initial burst release, with stable release profiles in the stability study, demonstrating the functional stability of the peptide implant. CONCLUSION These results indicate the feasibility of preparing non-biodegradable peptide-loaded implants using the hot-melt production method and may act as a proof of principle concept for further innovation in peptide medicinal formulations.
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Affiliation(s)
- Matthias D'Hondt
- Drug Quality and Registration (DruQuaR) group, Faculty of Pharmaceutical Sciences, Ghent University, Ghent, Belgium
| | - Frederick Verbeke
- Drug Quality and Registration (DruQuaR) group, Faculty of Pharmaceutical Sciences, Ghent University, Ghent, Belgium
| | - Pieter Wuytens
- Department of Molecular Biotechnology, Centre for Nano-Biophotonics, Ghent University, Ghent, Belgium
| | - Andre Skirtach
- Department of Molecular Biotechnology, Centre for Nano-Biophotonics, Ghent University, Ghent, Belgium
| | - Bart De Spiegeleer
- Drug Quality and Registration (DruQuaR) group, Faculty of Pharmaceutical Sciences, Ghent University, Ghent, Belgium
| | - Evelien Wynendaele
- Drug Quality and Registration (DruQuaR) group, Faculty of Pharmaceutical Sciences, Ghent University, Ghent, Belgium
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298
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Steffens Reinhardt L, Chee BS, Cao Z, Jaqueline Moura D, Nugent M. Freeze-thaw electrospun PVA-dacarbazine nanoparticles: preparation, characterization and anticancer evaluation. INT J POLYM MATER PO 2019. [DOI: 10.1080/00914037.2019.1605606] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Luiza Steffens Reinhardt
- Materials Research Institute, Athlone Institute of Technology, Athlone, Ireland
- Laboratory of Genetic Toxicology, Federal University of Health Sciences of Porto Alegre – UFCSPA, Porto Alegre City, Brazil
| | - Bor Shin Chee
- Materials Research Institute, Athlone Institute of Technology, Athlone, Ireland
| | - Zhi Cao
- Materials Research Institute, Athlone Institute of Technology, Athlone, Ireland
| | - Dinara Jaqueline Moura
- Laboratory of Genetic Toxicology, Federal University of Health Sciences of Porto Alegre – UFCSPA, Porto Alegre City, Brazil
| | - Michael Nugent
- Materials Research Institute, Athlone Institute of Technology, Athlone, Ireland
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299
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Pinho E, Machado S, Soares G. Smart Hydrogel for the pH‐Selective Drug Delivery of Antimicrobial Compounds. ACTA ACUST UNITED AC 2019. [DOI: 10.1002/masy.201800182] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Eva Pinho
- Centre for Textile Science and Technology (2C2T), University of MinhoCampus Azurém4800‐4058 GuimarãesPortugal
| | - Sandra Machado
- Centre for Textile Science and Technology (2C2T), University of MinhoCampus Azurém4800‐4058 GuimarãesPortugal
| | - Graça Soares
- Centre for Textile Science and Technology (2C2T), University of MinhoCampus Azurém4800‐4058 GuimarãesPortugal
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300
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Gupta PK, Gupta S, Pappuru S, Chabattula SC, Chakraborty D, Verma RS. Enhancing the anti-cancer therapeutic efficacy by optimizing molecular weight of metal-free fully alternating semi-aromatic polyester as nano-drug carriers. J Drug Deliv Sci Technol 2019. [DOI: 10.1016/j.jddst.2019.02.022] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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