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Lin Q, Shan X, Li X, Luo Z, Yu X, Liu H, Wang S, Zhao X, Zhu Y, Zhou H, Luo L, You J. Solvent exchange-motivated and tunable in situ forming implants sustaining triamcinolone acetonide release for arthritis treatment. Int J Pharm 2023; 645:123383. [PMID: 37678476 DOI: 10.1016/j.ijpharm.2023.123383] [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: 05/12/2023] [Revised: 08/17/2023] [Accepted: 09/04/2023] [Indexed: 09/09/2023]
Abstract
Arthritis is a syndrome characterized by inflammation in the joints. Triamcinolone acetonide (TA) was used as an anti-inflammatory agent in the treatment of this disease. However, there are limitations to its clinical application, including rapid clearance from the joint cavity, potential joint damage from multiple injections, and adverse joint events. To address these drawbacks, we developed a tunable in situ forming implant loaded with TA. This injectable polymer solution utilized poly (lactic-co-glycolic acid) (PLGA) as an extended-release material. When injected into the joints, the solution solidifies into implants through a solvent exchange in the aqueous environment. The implants demonstrated robust retention at the injection site and released TA over several weeks even months through diffusion and erosion. By adding different proportions of low water-miscible plasticizers, the release period of the drug could be precisely adjusted. The plasticizers-optimized implants exhibited a tough texture, enhancing the therapeutic efficiency and drug safety in vivo. In arthritic model studies, the tunable TA-loaded implants significantly reduced swelling, pain, and motor discoordination, and also showed suppression of arthritis progression to some extent. These findings suggested that TA-loaded ISFI holds promise for managing inflammatory disorders in individuals with arthritis.
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Affiliation(s)
- Qing Lin
- College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, Zhejiang 310058, China
| | - Xinyu Shan
- College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, Zhejiang 310058, China
| | - Xiang Li
- College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, Zhejiang 310058, China
| | - Zhenyu Luo
- College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, Zhejiang 310058, China
| | - Xin Yu
- College of Traditional Chinese Medicine, Shenyang Pharmaceutical University, No. 26 Huatuo Dajie, Benxi, Liaoning 117004, China
| | - Huihui Liu
- College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, Zhejiang 310058, China
| | - Sijie Wang
- College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, Zhejiang 310058, China
| | - Xiaoqi Zhao
- College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, Zhejiang 310058, China
| | - Ying Zhu
- College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, Zhejiang 310058, China
| | - Huanli Zhou
- College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, Zhejiang 310058, China
| | - Lihua Luo
- College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, Zhejiang 310058, China; Jinhua Institute of Zhejiang University, 321299 Jinhua, China.
| | - Jian You
- College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, Zhejiang 310058, China; Jinhua Institute of Zhejiang University, 321299 Jinhua, China; Zhejiang-California International Nanosystems Institute, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, Zhejiang, China.
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2
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Groner J, Tognazzi M, Walter M, Fleischmann D, Mietzner R, Ziegler CE, Goepferich AM, Breunig M. Encapsulation of Pioglitazone into Polymer-Nanoparticles for Potential Treatment of Atherosclerotic Diseases. ACS APPLIED BIO MATERIALS 2023. [PMID: 37145591 DOI: 10.1021/acsabm.2c01001] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Atherosclerosis is one of the most urgent global health subjects, causes millions of deaths worldwide, and is associated with enormous healthcare costs. Macrophages are the root cause for inflammatory onset and progression of the disease but are not addressed by conventional therapy. Therefore, we used pioglitazone, which is a drug initially used for diabetes therapies, but at the same time has great potential regarding the mitigation of inflammation. As yet, this potential of pioglitazone cannot be exploited, as drug concentrations at the target site in vivo are not sufficient. To overcome this shortcoming, we established PEG-PLA/PLGA-based nanoparticles loaded with pioglitazone and tested them in vitro. Encapsulation of the drug was analyzed by HPLC and revealed an outstanding encapsulation efficiency of 59% into the nanoparticles, which were 85 nm in size and had a PDI of 0.17. Further, uptake of our loaded nanoparticles in THP-1 macrophages was comparable to the uptake of unloaded nanoparticles. On the mRNA level, pioglitazone-loaded nanoparticles were superior to the free drug by 32% in increasing the expression of the targeted receptor PPAR-γ. Thereby the inflammatory response in macrophages was ameliorated. In this study, we take the first step toward an anti-inflammatory, causal antiatherosclerotic therapy, using the potential of the already established drug pioglitazone, and enable it to enrich at the target site by using nanoparticles. An additional crucial feature of our nanoparticle platform is the versatile modifiability of ligands and ligand density, to achieve an optimal active targeting effect in the future.
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Affiliation(s)
- Jonas Groner
- Department of Pharmaceutical Technology, University of Regensburg, Universitaetsstrasse 31, 93053 Regensburg, Germany
| | - Martina Tognazzi
- Department of Pharmaceutical Technology, University of Regensburg, Universitaetsstrasse 31, 93053 Regensburg, Germany
- University of Parma, Via Università 12, 43121 Parma, Italy
| | - Melanie Walter
- Department of Pharmaceutical Technology, University of Regensburg, Universitaetsstrasse 31, 93053 Regensburg, Germany
| | - Daniel Fleischmann
- Department of Pharmaceutical Technology, University of Regensburg, Universitaetsstrasse 31, 93053 Regensburg, Germany
| | - Raphael Mietzner
- Department of Pharmaceutical Technology, University of Regensburg, Universitaetsstrasse 31, 93053 Regensburg, Germany
| | - Christian E Ziegler
- Department of Pharmaceutical Technology, University of Regensburg, Universitaetsstrasse 31, 93053 Regensburg, Germany
| | - Achim M Goepferich
- Department of Pharmaceutical Technology, University of Regensburg, Universitaetsstrasse 31, 93053 Regensburg, Germany
| | - Miriam Breunig
- Department of Pharmaceutical Technology, University of Regensburg, Universitaetsstrasse 31, 93053 Regensburg, Germany
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3
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Effects of physico-chemical treatments on PLGA 50:50 electrospun nanofibers. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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4
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Wang C, Luan W, Zeng Z, He X, Liu Z, Wang JH. Synthesis, solvent interactions and Hansen solubility parameters of polyvinyl butyral. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-022-04366-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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5
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Joy N, Venugopal D, Samavedi S. Robust strategies to reduce burst and achieve tunable control over extended drug release from uniaxially electrospun composites. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111102] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
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6
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Dilek A, Sevgili LM, Çavuş S. The Use of Poly(dodecyl methacrylate-co–N-isopropylacrylamide) Gel for the Separation of Limonene + Linalool Mixture. JOURNAL OF POLYMER RESEARCH 2022. [DOI: 10.1007/s10965-022-02893-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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7
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Abstract
Hierarchic self-assembly underpins much of the form and function seen in synthetic or biological soft materials. Lipids are paramount examples, building themselves in nature or synthetically in a variety of meso/nanostructures. Synthetic block copolymers capture many of lipid's structural and functional properties. Lipids are typically biocompatible and high molecular weight polymers are mechanically robust and chemically versatile. The development of new materials for applications like controlled drug/gene/protein delivery, biosensors, and artificial cells often requires the combination of lipids and polymers. The emergent composite material, a "polymer-lipid hybrid membrane", displays synergistic properties not seen in pure components. Specific examples include the observation that hybrid membranes undergo lateral phase separation that can correlate in registry across multiple layers into a three-dimensional phase-separated system with enhanced permeability of encapsulated drugs. It is timely to underpin these emergent properties in several categories of hybrid systems ranging from colloidal suspensions to supported hybrid films. In this review, we discuss the form and function of a vast number of polymer-lipid hybrid systems published to date. We rationalize the results to raise new fundamental understanding of hybrid self-assembling soft materials as well as to enable the design of new supramolecular systems and applications.
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Affiliation(s)
- Yoo Kyung Go
- Department of Materials Science and Engineering, University of Illinois at Urbana─Champaign, Urbana, Illinois 61801, United States
| | - Cecilia Leal
- Department of Materials Science and Engineering, University of Illinois at Urbana─Champaign, Urbana, Illinois 61801, United States
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8
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Okubo K, Umezawa M, Soga K. Near Infrared Fluorescent Nanostructure Design for Organic/Inorganic Hybrid System. Biomedicines 2021; 9:1583. [PMID: 34829811 PMCID: PMC8615714 DOI: 10.3390/biomedicines9111583] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 10/15/2021] [Accepted: 10/28/2021] [Indexed: 11/16/2022] Open
Abstract
Near infrared (NIR) light offers high transparency in biological tissue. Recent advances in NIR fluorophores including organic dyes and lanthanide-doped inorganic nanoparticles have realized the effective use of the NIR optical window for in vivo bioimaging and photodynamic therapy. The narrow energy level intervals used for electronic transition that involves NIR light, however, give rise to a need for guidelines for reducing heat emission in luminescence systems, especially in the development of organic/inorganic hybrid structures. This review presents an approach for employing the polarity and vibrational energy of ions and molecules that surround the luminescence centers for the development of such hybrid nanostructures. Multiphonon relaxation theory, formulated for dealing with heat release in ionic solids, is applied to describe the vibrational energy in organic or molecular systems, referred to as phonon in this review, and we conclude that surrounding the luminescence centers either with ions with low vibrational energy or molecules with small chemical polarity is the key to bright luminescence. NIR photoexcited phosphors and nanostructures in organic/inorganic mixed systems, designed based on the guidelines, for photodynamic therapy are reviewed.
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Affiliation(s)
- Kyohei Okubo
- Department of Materials Science and Technology, Tokyo University of Science, Tokyo 125-8585, Japan; (M.U.); (K.S.)
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9
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Wang C, Luan W, Zeng Z, Wang H, Sun L, Wang JH. Polyvinyl Butyral with Different Acetalization Degrees: Synthesis and Solubility Parameters. J MACROMOL SCI B 2021. [DOI: 10.1080/00222348.2021.1971370] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Chunyu Wang
- School of Chemical Engineering, East China University of Science and Technology, Shanghai, China
| | - Wenwen Luan
- School of Chemical Engineering, East China University of Science and Technology, Shanghai, China
| | - Zuoxiang Zeng
- School of Chemical Engineering, East China University of Science and Technology, Shanghai, China
| | - Haonan Wang
- School of Chemical Engineering, East China University of Science and Technology, Shanghai, China
| | - Li Sun
- School of Chemical Engineering, East China University of Science and Technology, Shanghai, China
| | - James H Wang
- Shanghai Research Institute of Petrochemical Technology, China Petroleum and Chemical Corporation, Shanghai, China
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10
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Miles CE, Gwin C, Zubris KAV, Gormley AJ, Kohn J. Tyrosol Derived Poly(ester-arylate)s for Sustained Drug Delivery from Microparticles. ACS Biomater Sci Eng 2021; 7:2580-2591. [PMID: 34010557 DOI: 10.1021/acsbiomaterials.1c00448] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
New biodegradable polymers are needed for use in drug delivery systems to overcome the high burst release, lack of sustained drug release, and acidic degradation products frequently observed in current formulations. Commercially available poly(lactide-co-glycolide) (PLGA) is often used for particle drug release formulations; however, it is often limited by its large burst release and acidic degradation products. Therefore, a biocompatible and biodegradable tyrosol-derived poly(ester-arylate) library has been used to prepare a microparticle drug delivery system which shows sustained delivery of hydrophobic drugs. Studies were performed using polymers with varying hydrophilicity and thermal properties and compared to PLGA. Various drug solubilizing cosolvents were used to load model drugs curcumin, dexamethasone, nicotinamide, and acyclovir. Hydrophobic drugs curcumin and dexamethasone were successfully loaded up to 50 weight percent (wt %), and a linear correlation between drug wt % loaded and the particle glass transition temperature (Tg) was observed. Both curcumin and dexamethasone were visible on the particle surface at 20 wt % loading and higher. By adjusting the polymer concentration during particle formation, release rates were able to be controlled. Release studies of dexamethasone loaded particles with a lower polymer concentration showed a biphasic release profile and complete release after 47 days. Particles prepared using a higher polymer concentration showed sustained release for up to 77 days. Comparably, PLGA showed a traditional triphasic release profile and complete release after 63 days. This novel tyrosol-derived poly(ester-arylate) library can be used to develop injectable, long-term release formulations capable of providing sustained drug delivery.
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Affiliation(s)
- Catherine E Miles
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, United States
| | - Christine Gwin
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, United States
| | - Kimberly Ann V Zubris
- Lubrizol Life Science Health, 3894 Courtney Street, Bethlehem, Pennsylvania 18017, United States
| | - Adam J Gormley
- Department of Biomedical Engineering, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, United States
| | - Joachim Kohn
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, United States
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11
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Joy N, Samavedi S. Identifying Specific Combinations of Matrix Properties that Promote Controlled and Sustained Release of a Hydrophobic Drug from Electrospun Meshes. ACS OMEGA 2020; 5:15865-15876. [PMID: 32656407 PMCID: PMC7345396 DOI: 10.1021/acsomega.0c00954] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Accepted: 06/09/2020] [Indexed: 06/11/2023]
Abstract
Despite advances in the development of degradable polymers for drug delivery, effective translation of drug-loaded materials is often hindered due to a poor understanding of matrix property combinations that promote controlled and sustained release. In this study, we investigated the influence of dominant factors on the release of a hydrophobic glucocorticoid dexamethasone (DEX) from electrospun meshes. Polycaprolactone meshes released 98% of the drug within 24 h, while poly(l-lactide) meshes exhibited negligible release even after 28 days despite both polymers being slow-degrading. Differences in drug-polymer interactions and drug-polymer miscibility-but neither matrix degradation nor differences in bulk hydrophobicity-influenced DEX release from these semi-crystalline matrices. Poly(d,l-lactide-co-glycolide) 50:50 meshes possessing two different fiber diameters exhibited a sequential burst and sustained release, while poly(d,l-lactide-co-glycolide) 85:15 meshes cumulatively released 26% drug in a controlled manner. Although initial drug release from these matrices was driven by differences in matrix architecture and solid-state drug solubility, release toward the later stages was influenced by a combination of fiber swelling and matrix degradation as evidenced by gross and microstructural changes to the mesh network. We suggest that drug release from polymeric matrices can be better understood via investigation of critical matrix characteristics influencing release, as well as concomitant examination of drug-polymer interactions and miscibility. Our findings offer rational matrix design criteria to achieve controlled/extended drug release for promoting sustained biological responses.
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12
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Maslanka Figueroa S, Fleischmann D, Beck S, Goepferich A. Thermodynamic, Spatial and Methodological Considerations for the Manufacturing of Therapeutic Polymer Nanoparticles. Pharm Res 2020; 37:59. [PMID: 32095934 PMCID: PMC7040083 DOI: 10.1007/s11095-020-2783-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Accepted: 02/11/2020] [Indexed: 01/22/2023]
Abstract
PURPOSE Evaluate fundamental parameters that dictate the effectiveness of drug loading. METHODS A model water-soluble drug lacking ionizable groups, pirfenidone (PFD), was encapsulated through nanoprecipitation in poly(ethylene glycol)-poly(lactic acid) (PEG-PLA)-poly(lactic-co-glycolic acid) (PLGA) NPs. Firstly, the thermodynamic parameters predicting drug-polymer miscibility were determined to assess the system's suitability. Then, the encapsulation was evaluated experimentally by two different techniques, bulk and microfluidic (MF) nanoprecipitation. Additionally, the number of molecules that fit in a particle core were calculated and the loading determined experimentally for different core sizes. Lastly, the effect of co-encapsulation of α-lipoic acid (LA), a drug with complementary therapeutic effects and enhanced lipophilicity, was evaluated. RESULTS The thermodynamic miscibility parameters predicted a good suitability of the selected system. MF manufacturing enhanced the encapsulation efficiency by 60-90% and achieved a 2-fold higher NP cellular uptake. Considering spatial constrictions for drug encapsulation and increasing the size of the PLGA core the number of PFD molecules per NP was raised from under 500 to up to 2000. More so, the co-encapsulation of LA increased the number of drug molecules per particle by 96%, with no interference with the release profile. CONCLUSIONS Thermodynamic, spatial and methodological parameters should be considered to optimize drug encapsulation.
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Affiliation(s)
- Sara Maslanka Figueroa
- Department of Pharmaceutical Technology, University of Regensburg, Universitaetsstrasse 31, 93053, Regensburg, Germany
| | - Daniel Fleischmann
- Department of Pharmaceutical Technology, University of Regensburg, Universitaetsstrasse 31, 93053, Regensburg, Germany
| | - Sebastian Beck
- Department of Pharmaceutical Technology, University of Regensburg, Universitaetsstrasse 31, 93053, Regensburg, Germany
| | - Achim Goepferich
- Department of Pharmaceutical Technology, University of Regensburg, Universitaetsstrasse 31, 93053, Regensburg, Germany.
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13
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Zhang X, Yang L, Zhang C, Liu D, Meng S, Zhang W, Meng S. Effect of Polymer Permeability and Solvent Removal Rate on In Situ Forming Implants: Drug Burst Release and Microstructure. Pharmaceutics 2019; 11:pharmaceutics11100520. [PMID: 31658642 PMCID: PMC6835277 DOI: 10.3390/pharmaceutics11100520] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Revised: 09/26/2019] [Accepted: 10/08/2019] [Indexed: 02/03/2023] Open
Abstract
To explore the mechanism of drug release and depot formation of in situ forming implants (ISFIs), osthole-loaded ISFIs were prepared by dissolving polylactide, poly(lactide-co-glycolide), polycaprolactone, or poly(trimethylene carbonate) in different organic solvents, including N-methyl-2-pyrrolidone (NMP), dimethyl sulfoxide (DMSO), and triacetin (TA). Drug release, polymer degradation, solvent removal rate and depot microstructure were examined. The burst release effect could be reduced by using solvents exhibit slow forming phase inversion and less permeable polymers. Both the drug burst release and polymer depot microstructure were closely related to the removal rate of organic solvent. Polymers with higher permeability often displayed faster drug and solvent diffusion rates. Due to high polymer-solvent affinity, some of the organic solvent remained in the depot even after the implant was completely formed. The residual of organic solvent could be predicted by solubility parameters. The ISFI showed a lower initial release in vivo than that in vitro. In summary, the effects of different polymers and solvents on drug release and depot formation in ISFI systems were extensively investigated and discussed in this article. The two main factors, polymer permeability and solvent removal rate, were involved in different stages of drug release and depot formation in ISFI systems.
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Affiliation(s)
- Xiaowei Zhang
- Department of Pharmaceutics, School of Pharmacy, China Medical University, Liaoning 110122, China.
- Key Laboratory of Reproductive Health, Liaoning Research Institute of Family Planning, Liaoning 110031, China.
| | - Liqun Yang
- Key Laboratory of Reproductive Health, Liaoning Research Institute of Family Planning, Liaoning 110031, China.
| | - Chong Zhang
- Key Laboratory of Reproductive Health, Liaoning Research Institute of Family Planning, Liaoning 110031, China.
| | - Danhua Liu
- Key Laboratory of Reproductive Health, Liaoning Research Institute of Family Planning, Liaoning 110031, China.
| | - Shu Meng
- Shenyang Institute for Drug Control, Liaoning 110084, China.
| | - Wei Zhang
- Key Laboratory of Reproductive Health, Liaoning Research Institute of Family Planning, Liaoning 110031, China.
| | - Shengnan Meng
- Department of Pharmaceutics, School of Pharmacy, China Medical University, Liaoning 110122, China.
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14
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Predicting the drug loading efficiency into hybrid nanocarriers based on PLGA-vegetable oil using molecular dynamic simulation approach and Flory-Huggins theory. J Drug Deliv Sci Technol 2019. [DOI: 10.1016/j.jddst.2019.101203] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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15
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Solubility parameter estimation and phase inversion modeling of bentonite‐doped polymeric membrane systems. J Appl Polym Sci 2019. [DOI: 10.1002/app.48450] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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16
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Skidmore S, Hadar J, Garner J, Park H, Park K, Wang Y, Jiang XJ. Complex sameness: Separation of mixed poly(lactide-co-glycolide)s based on the lactide:glycolide ratio. J Control Release 2019; 300:174-184. [PMID: 30853529 DOI: 10.1016/j.jconrel.2019.03.002] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2018] [Revised: 02/23/2019] [Accepted: 03/01/2019] [Indexed: 11/18/2022]
Abstract
Poly (lactide-co-glycolide) (PLGA) has been used for making injectable, long-acting depot formulations for the last three decades. An in depth understanding of PLGA polymers is critical for development of depot formulations as their properties control drug release kinetics. To date, about 20 PLGA-based formulations have been approved by the U.S. Food and Drug Administration (FDA) through new drug applications, and none of them have generic counterparts on the market yet. The lack of generic PLGA products is partly due to difficulties in reverse engineering. A generic injectable PLGA product is required to establish qualitative and quantitative (Q1/Q2) sameness of PLGA to that of a reference listed drug (RLD) to obtain an approval from the FDA. Conventional characterizations of PLGA used in a formulation rely on measuring the molecular weight by gel permeation chromatography (GPC) based on polystyrene molecular weight standards, and determining the lactide:glycolide (L: G) ratio by 1H NMR and the end-group by 13C NMR. These approaches, however, may not be suitable or sufficient, if a formulation has more than one type of PLGA, especially when they have similar molecular weights, but different L:G ratios. Accordingly, there is a need to develop new assay methods for separating PLGAs possessing different L:G ratios when used in a drug product and characterizing individual PLGAs. The current work identifies a series of semi-solvents which exhibit varying degrees of PLGA solubility depending on the L:G ratio of the polymer. A good solvent dissolves PLGAs with all L:G ratios ranging from 50:50 to 100:0. A semi-solvent dissolves PLGAs with only certain L:G ratios. Almost all semi-solvents identified in this study increase their PLGA solubility as the L:G ratio increases, i.e., the lactide content increases. This lacto-selectivity, favoring higher L:G ratios, has been applied for separating individual PLGAs in a given depot formulation, leading to analysis of each type of PLGA. This semi-solvent method allows a simple, practical bench-top separation of PLGAs of varying L:G ratios. This method enables isolation and identification of individual PLGAs from a complex mixture that is critical for the quality control of PLGA formulations, as well as reverse engineering for generic products to establish the Q1/Q2 sameness.
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Affiliation(s)
- Sarah Skidmore
- Akina, Inc., 3495 Kent Avenue, Suite A200, West Lafayette, IN 47906, USA
| | - Justin Hadar
- Akina, Inc., 3495 Kent Avenue, Suite A200, West Lafayette, IN 47906, USA
| | - John Garner
- Akina, Inc., 3495 Kent Avenue, Suite A200, West Lafayette, IN 47906, USA
| | - Haesun Park
- Akina, Inc., 3495 Kent Avenue, Suite A200, West Lafayette, IN 47906, USA
| | - Kinam Park
- Akina, Inc., 3495 Kent Avenue, Suite A200, West Lafayette, IN 47906, USA; Biomedical Engineering and Pharmaceutics, Purdue University, 206 S. Martin Jischke Drive, West Lafayette, IN 47907, USA.
| | - Yan Wang
- Food and Drug Administration, Center for Drug Evaluation and Research, Office of Generic Drugs, 10903 New Hampshire Avenue, Silver Spring, MD 20993, USA
| | - Xiaohui Jeff Jiang
- Food and Drug Administration, Center for Drug Evaluation and Research, Office of Generic Drugs, 10903 New Hampshire Avenue, Silver Spring, MD 20993, USA
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Jankovic S, Tsakiridou G, Ditzinger F, Koehl NJ, Price DJ, Ilie AR, Kalantzi L, Kimpe K, Holm R, Nair A, Griffin B, Saal C, Kuentz M. Application of the solubility parameter concept to assist with oral delivery of poorly water-soluble drugs – a PEARRL review. J Pharm Pharmacol 2018; 71:441-463. [DOI: 10.1111/jphp.12948] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Accepted: 05/28/2018] [Indexed: 01/29/2023]
Abstract
Abstract
Objectives
Solubility parameters have been used for decades in various scientific fields including pharmaceutics. It is, however, still a field of active research both on a conceptual and experimental level. This work addresses the need to review solubility parameter applications in pharmaceutics of poorly water-soluble drugs.
Key findings
An overview of the different experimental and calculation methods to determine solubility parameters is provided, which covers from classical to modern approaches. In the pharmaceutical field, solubility parameters are primarily used to guide organic solvent selection, cocrystals and salt screening, lipid-based delivery, solid dispersions and nano- or microparticulate drug delivery systems. Solubility parameters have been applied for a quantitative assessment of mixtures, or they are simply used to rank excipients for a given drug.
Summary
In particular, partial solubility parameters hold great promise for aiding the development of poorly soluble drug delivery systems. This is particularly true in early-stage development, where compound availability and resources are limited. The experimental determination of solubility parameters has its merits despite being rather labour-intensive because further data can be used to continuously improve in silico predictions. Such improvements will ensure that solubility parameters will also in future guide scientists in finding suitable drug formulations.
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Affiliation(s)
- Sandra Jankovic
- Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
- Institute of Pharma Technology, University of Applied Sciences and Arts Northwestern Switzerland, Muttenz, Switzerland
| | - Georgia Tsakiridou
- Pharmathen SA, Product Design & Evaluation, Athens, Greece
- Faculty of Pharmacy, National and Kapodistrian University of Athens, Athens, Greece
| | - Felix Ditzinger
- Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
- Institute of Pharma Technology, University of Applied Sciences and Arts Northwestern Switzerland, Muttenz, Switzerland
| | - Niklas J Koehl
- School of Pharmacy, University College Cork, Cork, Ireland
| | - Daniel J Price
- Merck Group, Molecule Characterisation, Darmstadt, Germany
- Goethe University, Frankfurt, Germany
| | - Alexandra-Roxana Ilie
- School of Pharmacy, University College Cork, Cork, Ireland
- Drug Product Development, Janssen Research and Development, Johnson & Johnson, Beerse, Belgium
| | - Lida Kalantzi
- Pharmathen SA, Product Design & Evaluation, Athens, Greece
| | - Kristof Kimpe
- Pharmaceutical Sciences, Janssen Research and Development, Johnson & Johnson, Beerse, Belgium
| | - René Holm
- Drug Product Development, Janssen Research and Development, Johnson & Johnson, Beerse, Belgium
| | - Anita Nair
- Merck Group, Molecule Characterisation, Darmstadt, Germany
| | | | - Christoph Saal
- Merck Group, Molecule Characterisation, Darmstadt, Germany
| | - Martin Kuentz
- Institute of Pharma Technology, University of Applied Sciences and Arts Northwestern Switzerland, Muttenz, Switzerland
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18
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Wilkosz N, Łazarski G, Kovacik L, Gargas P, Nowakowska M, Jamróz D, Kepczynski M. Molecular Insight into Drug-Loading Capacity of PEG-PLGA Nanoparticles for Itraconazole. J Phys Chem B 2018; 122:7080-7090. [PMID: 29927603 DOI: 10.1021/acs.jpcb.8b03742] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Nanoparticles made of amphiphilic block copolymers comprising biodegradable core-forming blocks are very attractive for the preparation of drug-delivery systems with sustained release. Their therapeutic applications are, however, hindered by low values of the drug-loading content (DLC). The compatibility between the drug and the core-forming block of the copolymer is considered the most important factor affecting the DLC value. However, the molecular picture of the hydrophobic drug-copolymer interaction is still not fully recognized. Herein, we examined this complex issue using a range of experimental techniques in combination with atomistic molecular dynamics simulations. We performed an analysis of the interaction between itraconazole, a model hydrophobic drug, and a poly(ethylene glycol)-poly(lactide- co-glycolide) (PEG-PLGA) copolymer, a biodegradable copolymer commonly used for the preparation of drug-delivery systems. Our results clearly show that the limited capacity of the PEG-PLGA nanoparticles for the accumulation of hydrophobic drugs is due to the fact that the drug molecules are located only at the water-polymer interface, whereas the interior of the PLGA core remains empty. These findings can be useful in the rational design and development of amphiphilic copolymer-based drug-delivery systems.
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Affiliation(s)
- Natalia Wilkosz
- Faculty of Chemistry , Jagiellonian University , Gronostajowa 2 , 30-387 Kraków , Poland
| | - Grzegorz Łazarski
- Faculty of Chemistry , Jagiellonian University , Gronostajowa 2 , 30-387 Kraków , Poland
| | - Lubomir Kovacik
- Institute of Biology and Medical Genetics, First Faculty of Medicine , Charles University , Albertov 4 , 128 01 Prague , Czech Republic
| | - Patrycja Gargas
- Faculty of Chemistry , Jagiellonian University , Gronostajowa 2 , 30-387 Kraków , Poland
| | - Maria Nowakowska
- Faculty of Chemistry , Jagiellonian University , Gronostajowa 2 , 30-387 Kraków , Poland
| | - Dorota Jamróz
- Faculty of Chemistry , Jagiellonian University , Gronostajowa 2 , 30-387 Kraków , Poland
| | - Mariusz Kepczynski
- Faculty of Chemistry , Jagiellonian University , Gronostajowa 2 , 30-387 Kraków , Poland
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Sousa-Batista AJ, Arruda-Costa N, Rossi-Bergmann B, Ré MI. Improved drug loading via spray drying of a chalcone implant for local treatment of cutaneous leishmaniasis. Drug Dev Ind Pharm 2018; 44:1473-1480. [DOI: 10.1080/03639045.2018.1461903] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Ariane J. Sousa-Batista
- Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
- Mines Albi, CNRS, Centre RAPSODEE, Campus Jarlard, Université de Toulouse, Albi, France
| | - Natalia Arruda-Costa
- Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Bartira Rossi-Bergmann
- Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Maria Inês Ré
- Mines Albi, CNRS, Centre RAPSODEE, Campus Jarlard, Université de Toulouse, Albi, France
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20
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Leung MHM, Shen AQ. Microfluidic Assisted Nanoprecipitation of PLGA Nanoparticles for Curcumin Delivery to Leukemia Jurkat Cells. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:3961-3970. [PMID: 29544247 DOI: 10.1021/acs.langmuir.7b04335] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The ability to control particle size and size distribution of nanoparticles for drug delivery is essential because it impacts on the biodistribution and cellular uptake of nanoparticles. We present a novel microfluidic assisted nanoprecipitation strategy that enables synthesis of surfactant-free curcumin encapsulated poly(lactide- co-glycolide) nanoparticles (Cur-PLGA NP) with adjustable particle diameters (30-70 nm) and narrow particle size distribution (polydispersity index less than 0.2). Our Cur-PLGA NP exhibit excellent colloidal stability and inhibit degradation of curcumin. We further demonstrate the potential of our Cur-PLGA NP as a nanotoxic delivery system for curcumin. Cellular viability assay validates a dose-dependent cytotoxicity of Cur-PLGA NP in leukemia Jurkat cells. In contrast, Cur-PLGA NP does not alter the viability of fibroblast NIH3T3 cells, which suggests that the cytotoxicity of Cur-PLGA NP is specific to cell types. Furthermore, there is no detectable effect by PLGA NP to both leukemia Jurkat cells and fibroblast NIH3T3 cells, highlighting the nontoxic nature of our delivery system. Confocal cell uptake studies indicate that PLGA NP do not alter the cell uptake of curcumin. Our microfluidic assisted approach offers a controlled and effective nanobiomaterials synthesis of drug delivery system for curcumin, which can be extended to different capsule materials for a variety of biomedical applications.
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Affiliation(s)
- Mandy H M Leung
- Micro/Bio/Nanofluidics Unit , Okinawa Institute of Science and Technology Graduate University , 1919-1 Tancha, Onna-son , Kunigami-gun, Okinawa 904-0495 , Japan
| | - Amy Q Shen
- Micro/Bio/Nanofluidics Unit , Okinawa Institute of Science and Technology Graduate University , 1919-1 Tancha, Onna-son , Kunigami-gun, Okinawa 904-0495 , Japan
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21
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Jäger A, Jäger E, Giacomelli FC, Nallet F, Steinhart M, Putaux JL, Konefał R, Spěváček J, Ulbrich K, Štěpánek P. Structural changes on polymeric nanoparticles induced by hydrophobic drug entrapment. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2017.10.059] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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22
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Nabar GM, Mahajan KD, Calhoun MA, Duong AD, Souva MS, Xu J, Czeisler C, Puduvalli VK, Otero JJ, Wyslouzil BE, Winter JO. Micelle-templated, poly(lactic- co-glycolic acid) nanoparticles for hydrophobic drug delivery. Int J Nanomedicine 2018; 13:351-366. [PMID: 29391794 PMCID: PMC5768187 DOI: 10.2147/ijn.s142079] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
PURPOSE Poly(lactic-co-glycolic acid) (PLGA) is widely used for drug delivery because of its biocompatibility, ability to solubilize a wide variety of drugs, and tunable degradation. However, achieving sub-100 nm nanoparticles (NPs), as might be desired for delivery via the enhanced permeability and retention effect, is extremely difficult via typical top-down emulsion approaches. METHODS Here, we present a bottom-up synthesis method yielding PLGA/block copolymer hybrids (ie, "PolyDots"), consisting of hydrophobic PLGA chains entrapped within self-assembling poly(styrene-b-ethylene oxide) (PS-b-PEO) micelles. RESULTS PolyDots exhibit average diameters <50 nm and lower polydispersity than conventional PLGA NPs. Drug encapsulation efficiencies of PolyDots match conventional PLGA NPs (ie, ~30%) and are greater than those obtained from PS-b-PEO micelles (ie, ~7%). Increasing the PLGA:PS-b-PEO weight ratio alters the drug release mechanism from chain relaxation to erosion controlled. PolyDots are taken up by model glioma cells via endocytotic mechanisms within 24 hours, providing a potential means for delivery to cytoplasm. PolyDots can be lyophilized with minimal change in morphology and encapsulant functionality, and can be produced at scale using electrospray. CONCLUSION Encapsulation of PLGA within micelles provides a bottom-up route for the synthesis of sub-100 nm PLGA-based nanocarriers with enhanced stability and drug-loading capacity, and tunable drug release, suitable for potential clinical applications.
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Affiliation(s)
- Gauri M Nabar
- William G Lowrie Department of Chemical and Biomolecular Engineering
| | - Kalpesh D Mahajan
- William G Lowrie Department of Chemical and Biomolecular Engineering
| | | | - Anthony D Duong
- William G Lowrie Department of Chemical and Biomolecular Engineering
| | - Matthew S Souva
- William G Lowrie Department of Chemical and Biomolecular Engineering
| | - Jihong Xu
- Division of Neuro-oncology, College of Medicine, The Ohio State University Comprehensive Cancer Center
- Dardinger Laboratory for Neuro-oncology and Neurosciences, Department of Neurosurgery, College of Medicine, The Ohio State University Comprehensive Cancer Center
| | - Catherine Czeisler
- Department of Pathology and the Neurological Research Institute, College of Medicine
| | - Vinay K Puduvalli
- Division of Neuro-oncology, College of Medicine, The Ohio State University Comprehensive Cancer Center
- Dardinger Laboratory for Neuro-oncology and Neurosciences, Department of Neurosurgery, College of Medicine, The Ohio State University Comprehensive Cancer Center
| | - José Javier Otero
- Department of Pathology and the Neurological Research Institute, College of Medicine
| | - Barbara E Wyslouzil
- William G Lowrie Department of Chemical and Biomolecular Engineering
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, OH, USA
| | - Jessica O Winter
- William G Lowrie Department of Chemical and Biomolecular Engineering
- Department of Biomedical Engineering
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Encapsulation of Nicardipine Hydrochloride and Release from Biodegradable Poly(D,L-lactic-co-glycolic acid) Microparticles by Double Emulsion Process: Effect of Emulsion Stability and Different Parameters on Drug Entrapment. Int J Biomater 2017; 2017:1743765. [PMID: 29250113 PMCID: PMC5698826 DOI: 10.1155/2017/1743765] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Revised: 09/26/2017] [Accepted: 10/18/2017] [Indexed: 11/27/2022] Open
Abstract
Poly(D,L-lactic-co-glycolic acid) (PLGA) is an important material used in drug delivery when controlled release is required. The purpose of this research is to design and characterize PLGA microparticles (PLGA MPs) implants for the controlled release of nicardipine hydrochloride (NCH) in vitro. This study used the water-in-oil-in-water (w1/o/w2) double emulsion and solvent diffusion/evaporation approach to prepare PLGA MPs. Optimal processing conditions were found, such as polymer content, surfactant type, stabilizer concentration, inner and outer aqueous phase volumes, and stirring speed. The PLGA MPs for use as nicardipine hydrochloride (NCH) loading and release had spherical morphology, and the average diameter was smaller than 5.20 ± 0.25 μm. The release kinetics were modeled to elucidate the possible mechanism of drug release. In vitro release studies indicated that the NCH release rate is slow and continuous. PLGA MPs are an interesting alternative drug delivery system, especially for use with NCH for biomedical applications.
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24
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Biodegradable nanoparticles as nanomedicines: are drug-loading content and release mechanism dictated by particle density? Colloid Polym Sci 2017. [DOI: 10.1007/s00396-016-4007-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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25
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Beck-Broichsitter M. Stability-limit Ouzo region boundaries for poly(lactide- co -glycolide) nanoparticles prepared by nanoprecipitation. Int J Pharm 2016; 511:262-266. [DOI: 10.1016/j.ijpharm.2016.07.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Revised: 07/04/2016] [Accepted: 07/08/2016] [Indexed: 11/25/2022]
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26
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Augmenting drug-carrier compatibility improves tumour nanotherapy efficacy. Nat Commun 2016; 7:11221. [PMID: 27071376 PMCID: PMC4833858 DOI: 10.1038/ncomms11221] [Citation(s) in RCA: 102] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Accepted: 03/03/2016] [Indexed: 12/11/2022] Open
Abstract
A major goal of cancer nanotherapy is to use nanoparticles as carriers for targeted delivery of anti-tumour agents. The drug-carrier association after intravenous administration is essential for efficient drug delivery to the tumour. However, a large number of currently available nanocarriers are self-assembled nanoparticles whose drug-loading stability is critically affected by the in vivo environment. Here we used in vivo FRET imaging to systematically investigate how drug-carrier compatibility affects drug release in a tumour mouse model. We found the drug's hydrophobicity and miscibility with the nanoparticles are two independent key parameters that determine its accumulation in the tumour. Next, we applied these findings to improve chemotherapeutic delivery by augmenting the parent drug's compatibility; as a result, we achieved better antitumour efficacy. Our results help elucidate nanomedicines' in vivo fate and provide guidelines for efficient drug delivery.
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27
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Design of PLGA-based depot delivery systems for biopharmaceuticals prepared by spray drying. Int J Pharm 2016; 498:82-95. [DOI: 10.1016/j.ijpharm.2015.12.025] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Revised: 12/04/2015] [Accepted: 12/09/2015] [Indexed: 12/30/2022]
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28
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Leung MHM, Harada T, Dai S, Kee TW. Nanoprecipitation and Spectroscopic Characterization of Curcumin-Encapsulated Polyester Nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:11419-11427. [PMID: 26439894 DOI: 10.1021/acs.langmuir.5b02773] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Curcumin-encapsulated polyester nanoparticles (Cur-polyester NPs) of approximately 100 nm diameter with a negatively charged surface were prepared using a one-step nanoprecipitation method. The Cur-polyester NPs were prepared using polylactic acid, poly(D,L-lactic-co-glycolic acid) and poly(ϵ-caprolactone) without any emulsifier or surfactant. The encapsulation of curcumin in these polyester NPs greatly suppresses curcumin degradation in the aqueous environment due to its segregation from water. In addition, the fluorescence of curcumin in polyester NPs has a quantum yield of 4 to 5%, which is higher than that of curcumin in micellar systems and comparable to those in organic solvents, further supporting the idea that the polyester NPs are capable of excluding water from curcumin. Furthermore, the results from femtosecond fluorescence upconversion spectroscopy reveal that there is a decrease in the signal amplitude corresponding to solvent reorganization of excited state curcumin in the polyester NPs compared with curcumin in micellar systems. The Cur-polyester NPs also show a lack of deuterium isotope effect in the fluorescence lifetime. These results indicate that the interaction between curcumin and water in the polyester NPs is significantly weaker than that in micelles. Therefore, the aqueous stability of curcumin is greatly improved due to highly effective segregation from water. The overall outcome suggests that the polyester NPs prepared using the method reported herein are an attractive system for encapsulating and stabilizing curcumin in the aqueous environment.
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Affiliation(s)
- Mandy H M Leung
- Department of Chemistry and ‡School of Chemical Engineering, The University of Adelaide , Adelaide, South Australia 5005, Australia
| | - Takaaki Harada
- Department of Chemistry and ‡School of Chemical Engineering, The University of Adelaide , Adelaide, South Australia 5005, Australia
| | - Sheng Dai
- Department of Chemistry and ‡School of Chemical Engineering, The University of Adelaide , Adelaide, South Australia 5005, Australia
| | - Tak W Kee
- Department of Chemistry and ‡School of Chemical Engineering, The University of Adelaide , Adelaide, South Australia 5005, Australia
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30
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Hallan SS, Kaur P, Kaur V, Mishra N, Vaidya B. Lipid polymer hybrid as emerging tool in nanocarriers for oral drug delivery. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2014; 44:334-49. [PMID: 25237838 DOI: 10.3109/21691401.2014.951721] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The oral route for drug delivery is a widely accepted route. For that reason, many researchers are currently working to develop efficient oral drug delivery systems. Use of polymeric nanoparticles (NPs) and lipid carrier systems, including liposomes, solid lipid nanoparticles (SLNs) and nanostructured lipid carriers (NLC), has limitations such as drug leakage and high water content of dispersions. Thus, lipid polymer hybrid nanoparticles (LPNs) have been explored by the researchers to provide a better effect using properties of both polymers and lipids. The present review is focused on the challenges, possibilities, and future perspectives of LPNs for oral delivery.
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Affiliation(s)
| | - Prabhjot Kaur
- a Nanomedicine Research Centre, I.S.F. College of Pharmacy , Moga , Punjab , India
| | - Veerpal Kaur
- a Nanomedicine Research Centre, I.S.F. College of Pharmacy , Moga , Punjab , India
| | - Neeraj Mishra
- a Nanomedicine Research Centre, I.S.F. College of Pharmacy , Moga , Punjab , India
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31
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Xiang T, Anderson BD. Water Uptake, Distribution, and Mobility in Amorphous Poly( d , l ‐Lactide) by Molecular Dynamics Simulation. J Pharm Sci 2014; 103:2759-2771. [DOI: 10.1002/jps.23855] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2013] [Revised: 12/23/2013] [Accepted: 12/24/2013] [Indexed: 11/06/2022]
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32
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Weerachanchai P, Wong Y, Lim KH, Tan TTY, Lee JM. Determination of Solubility Parameters of Ionic Liquids and Ionic Liquid/Solvent Mixtures from Intrinsic Viscosity. Chemphyschem 2014; 15:3580-91. [DOI: 10.1002/cphc.201402345] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2014] [Indexed: 11/11/2022]
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33
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Bock N, Dargaville TR, Woodruff MA. Controlling microencapsulation and release of micronized proteins using poly(ethylene glycol) and electrospraying. Eur J Pharm Biopharm 2014; 87:366-77. [PMID: 24657821 DOI: 10.1016/j.ejpb.2014.03.008] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Revised: 03/01/2014] [Accepted: 03/14/2014] [Indexed: 10/25/2022]
Abstract
The fabrication of tailored microparticles for delivery of therapeutics is a challenge relying upon a complex interplay between processing parameters and materials properties. The emerging use of electrospraying allows better tailoring of particle morphologies and sizes than current techniques, critical to reproducible release profiles. While dry encapsulation of proteins is essential for the release of active therapeutics from microparticles, it is currently uncharacterized in electrospraying. To this end, poly(ethylene glycol) (PEG) was assessed as a micronizing and solubilizing agent for dry protein encapsulation and release from electrosprayed particles made from polycaprolactone (PCL). The physical effect of PEG in protein-loaded poly(lactic-co-glycolic acid) (PLGA) particles was also studied, for comparison. The addition of 5-15 wt% PEG 6 kDa or 35 kDa resulted in reduced PCL particle sizes and broadened distributions, which could be improved by tailoring the electrospraying processing parameters, namely by reducing polymer concentration and increasing flow rate. Upon micronization, protein particle size was reduced to the micrometer domain, resulting in homogenous encapsulation in electrosprayed PCL microparticles. Microparticle size distributions were shown to be the most determinant factor for protein release by diffusion and allowed specific control of release patterns.
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Affiliation(s)
- Nathalie Bock
- Tissue Repair and Regeneration Program, Institute of Health and Biomedical Innovation, Queensland University of Technology, Kelvin Grove, Australia; Biomaterials and Tissue Morphology Group, Institute of Health and Biomedical Innovation, Queensland University of Technology, Kelvin Grove, Australia; Regenerative Medicine Group, Institute of Health and Biomedical Innovation, Queensland University of Technology, Kelvin Grove, Australia.
| | - Tim R Dargaville
- Tissue Repair and Regeneration Program, Institute of Health and Biomedical Innovation, Queensland University of Technology, Kelvin Grove, Australia
| | - Maria A Woodruff
- Biomaterials and Tissue Morphology Group, Institute of Health and Biomedical Innovation, Queensland University of Technology, Kelvin Grove, Australia
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Lu Y, Sturek M, Park K. Microparticles produced by the hydrogel template method for sustained drug delivery. Int J Pharm 2013; 461:258-69. [PMID: 24333903 DOI: 10.1016/j.ijpharm.2013.11.058] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Revised: 10/17/2013] [Accepted: 11/30/2013] [Indexed: 11/27/2022]
Abstract
Polymeric microparticles have been used widely for sustained drug delivery. Current methods of microparticle production can be improved by making homogeneous particles in size and shape, increasing the drug loading, and controlling the initial burst release. In the current study, the hydrogel template method was used to produce homogeneous poly(lactide-co-glycolide) (PLGA) microparticles and to examine formulation and process-related parameters. Poly(vinyl alcohol) (PVA) was used to make hydrogel templates. The parameters examined include PVA molecular weight, type of PLGA (as characterized by lactide content, inherent viscosity), polymer concentration, drug concentration and composition of solvent system. Three model compounds studied were risperidone, methylprednisolone acetate and paclitaxel. The ability of the hydrogel template method to produce microparticles with good conformity to template was dependent on molecular weight of PVA and viscosity of the PLGA solution. Drug loading and encapsulation efficiency were found to be influenced by PLGA lactide content, polymer concentration and composition of the solvent system. The drug loading and encapsulation efficiency were 28.7% and 82% for risperidone, 31.5% and 90% for methylprednisolone acetate, and 32.2% and 92% for paclitaxel, respectively. For all three drugs, release was sustained for weeks, and the in vitro release profile of risperidone was comparable to that of microparticles prepared using the conventional emulsion method. The hydrogel template method provides a new approach of manipulating microparticles.
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Affiliation(s)
- Ying Lu
- Department of Industrial and Physical Pharmacy, Purdue University, West Lafayette, IN 47906, USA
| | - Michael Sturek
- Department of Cellular & Integrative Physiology, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Kinam Park
- Department of Industrial and Physical Pharmacy, Purdue University, West Lafayette, IN 47906, USA; Department of Biomedical Engineering, Purdue University, West Lafayette, IN 47906, USA.
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35
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Deng L, Wang Q, Chen Y, Zhang Z, Tang J. Determination of the solubility parameter of ionic liquid 1-octyl-3-methylimidazolium hexafluorophosphate by inverse gas chromatography. J Mol Liq 2013. [DOI: 10.1016/j.molliq.2013.07.019] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Youm I, Youan BBC. Uptake mechanism of Furosemide-loaded pegylated nanoparticles by cochlear cell lines. Hear Res 2013; 304:7-19. [DOI: 10.1016/j.heares.2013.05.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/24/2012] [Revised: 05/02/2013] [Accepted: 05/15/2013] [Indexed: 12/20/2022]
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37
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Díez E, Camacho J, Díaz I, Ovejero G. Turbidimetric and intrinsic viscosity study of EVA copolymer–solvent systems. Polym Bull (Berl) 2013. [DOI: 10.1007/s00289-013-1054-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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38
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de Oliveira AM, Jäger E, Jäger A, Stepánek P, Giacomelli FC. Physicochemical aspects behind the size of biodegradable polymeric nanoparticles: A step forward. Colloids Surf A Physicochem Eng Asp 2013. [DOI: 10.1016/j.colsurfa.2013.08.056] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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39
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Aragón DM, Rosas JE, Martínez F. Relationship between the solution thermodynamic properties of naproxen in organic solvents and its release profiles from PLGA microspheres. J Microencapsul 2013; 30:218-24. [DOI: 10.3109/02652048.2012.717114] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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40
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Paolino D, Cosco D, Celano M, Moretti S, Puxeddu E, Russo D, Fresta M. Gemcitabine-loaded biocompatible nanocapsules for the effective treatment of human cancer. Nanomedicine (Lond) 2013; 8:193-201. [DOI: 10.2217/nnm.12.101] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Aim: To encapsulate the nucleoside gemcitabine (GEM) in novel PEGylated polymeric nanocapsules (NanoGEM). Materials & methods: The biological activity of NanoGEM was tested both in vitro and in vivo in comparison with the free drug. The NanoGEM was made of polylactic acid and allowed the entrapment of a great amount of GEM. Results & discussion: The NanoGEM showed mean sizes of approximately 200 nm, a polydispersity index of approximately 0.1 and a ζ-potential of -30 mV. It exerted a stronger, quicker effect on the reduction of HEK293 cell growth in vitro in comparison with free GEM and had an in vivo antitumoral effect on the proliferation of xenograft tumors at a drug dosage tenfold less than its saline solution. The employment of nanocapsules increased the plasmatic half-life of the drug and allowed a great accumulation of GEM inside the tumors. Conclusion: NanoGEM represents a promising new tool for the treatment of cancer. Original submitted 16 November 2011; Revised submitted 21 June 2012; Published online 24 October 2012
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Affiliation(s)
- Donatella Paolino
- Department of Health Sciences, University ‘Magna Græcia’ of Catanzaro, Campus Universitario ‘S. Venuta’, Viale Europa, I-88100 Germaneto, Catanzaro, Italy
- UOC Farmacia Ospedaliera, Fondazione per la Ricerca e la Cura dei Tumori ‘Tommaso Campanella’, I-88100 Germaneto (CZ), Italy
| | - Donato Cosco
- Department of Health Sciences, University ‘Magna Græcia’ of Catanzaro, Campus Universitario ‘S. Venuta’, Viale Europa, I-88100 Germaneto, Catanzaro, Italy
| | - Marilena Celano
- Department of Health Sciences, University ‘Magna Græcia’ of Catanzaro, Campus Universitario ‘S. Venuta’, Viale Europa, I-88100 Germaneto, Catanzaro, Italy
| | - Sonia Moretti
- Department of Internal Medicine, University of Perugia, I-06126 Perugia, Italy
| | - Efisio Puxeddu
- Department of Internal Medicine, University of Perugia, I-06126 Perugia, Italy
| | - Diego Russo
- Department of Health Sciences, University ‘Magna Græcia’ of Catanzaro, Campus Universitario ‘S. Venuta’, Viale Europa, I-88100 Germaneto, Catanzaro, Italy
| | - Massimo Fresta
- Department of Health Sciences, University ‘Magna Græcia’ of Catanzaro, Campus Universitario ‘S. Venuta’, Viale Europa, I-88100 Germaneto, Catanzaro, Italy
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41
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Chen Y, Wang Q, Zhang Z, Tang J. Determination of the Solubility Parameter of Ionic Liquid 1-Hexyl-3-methylimidazolium Hexafluorophosphate by Inverse Gas Chromatography. Ind Eng Chem Res 2012. [DOI: 10.1021/ie301924y] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yali Chen
- Center for Physical and Chemical
Analysis, Xinjiang University, Urumqi 830046,
People's Republic
of China
| | - Qiang Wang
- Center for Physical and Chemical
Analysis, Xinjiang University, Urumqi 830046,
People's Republic
of China
| | - Zhengfang Zhang
- Center for Physical and Chemical
Analysis, Xinjiang University, Urumqi 830046,
People's Republic
of China
| | - Jun Tang
- Center for Physical and Chemical
Analysis, Xinjiang University, Urumqi 830046,
People's Republic
of China
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42
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Gilchrist SE, Rickard DL, Letchford K, Needham D, Burt HM. Phase separation behavior of fusidic acid and rifampicin in PLGA microspheres. Mol Pharm 2012; 9:1489-501. [PMID: 22482935 DOI: 10.1021/mp300099f] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The purpose of this study was to characterize the phase separation behavior of fusidic acid (FA) and rifampicin (RIF) in poly(d,l-lactic acid-co-glycolic acid) (PLGA) using a model microsphere formulation. To accomplish this, microspheres containing 20% FA with 0%, 5%, 10%, 20%, and 30% RIF and 20% RIF with 30%, 20% 10%, 5%, and 0% FA were prepared by solvent evaporation. Drug-polymer and drug-drug compatibility and miscibility were characterized using laser confocal microscopy, Raman spectroscopy, XRPD, DSC, and real-time video recordings of single-microsphere formation. The encapsulation of FA and RIF alone, or in combination, results in a liquid-liquid phase separation of solvent-and-drug-rich microdomains that are excluded from the polymer bulk during microsphere hardening, resulting in amorphous spherical drug-rich domains within the polymer bulk and on the microsphere surface. FA and RIF phase separate from PLGA at relative droplet volumes of 0.311 ± 0.014 and 0.194 ± 0.000, respectively, predictive of the incompatibility of each drug and PLGA. When coloaded, FA and RIF phase separate in a single event at the relative droplet volume 0.251 ± 0.002, intermediate between each of the monoloaded formulations and dependent on the relative contribution of FA or RIF. The release of FA and RIF from phase-separated microspheres was characterized exclusively by a burst release and was dependent on the phase exclusion of surface drug-rich domains. Phase separation results in coalescence of drug-rich microdroplets and polymer phase exclusion, and it is dependent on the compatibility between FA and RIF and PLGA. FA and RIF are mutually miscible in all proportions as an amorphous glass, and they phase separate from the polymer as such. These drug-rich domains were excluded to the surface of the microspheres, and subsequent release of both drugs from the microspheres was rapid and reflected this surface location.
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Affiliation(s)
- Samuel E Gilchrist
- Faculty of Pharmaceutical Science, University of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada
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43
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Krok M, Pamula E. Poly(L-lactide-co-glycolide) microporous membranes for medical applications produced with the use of polyethylene glycol as a pore former. J Appl Polym Sci 2012. [DOI: 10.1002/app.36697] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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44
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Vay K, Scheler S, Frieß W. Application of Hansen solubility parameters for understanding and prediction of drug distribution in microspheres. Int J Pharm 2011; 416:202-9. [DOI: 10.1016/j.ijpharm.2011.06.047] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2011] [Revised: 06/22/2011] [Accepted: 06/24/2011] [Indexed: 11/27/2022]
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45
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Beck-Broichsitter M, Rytting E, Lebhardt T, Wang X, Kissel T. Preparation of nanoparticles by solvent displacement for drug delivery: A shift in the “ouzo region” upon drug loading. Eur J Pharm Sci 2010; 41:244-53. [DOI: 10.1016/j.ejps.2010.06.007] [Citation(s) in RCA: 125] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2009] [Revised: 06/12/2010] [Accepted: 06/14/2010] [Indexed: 10/19/2022]
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46
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Kim MR, Lee S, Park JK, Cho KY. Golf ball-shaped PLGA microparticles with internal pores fabricated by simple O/W emulsion. Chem Commun (Camb) 2010; 46:7433-5. [PMID: 20820511 DOI: 10.1039/c0cc01738h] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Simple oil-in-water emulsion led to structural complexity at both the surface and interior of the PLGA microsphere. A golf ball-like dimpled surface comes from the heteroaggregation of volatile nonsolvent colloid originating from the inside of the organic droplet as supported by in situ optical microscopy. The internal porous structure and encapsulation of hydrophobic agent inside the microparticle implies its potential application as a drug carrier.
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Affiliation(s)
- Mi Ri Kim
- Division of Advanced Materials Engineering and Institute for Rare Metals, Kongju National University, Cheonan, Chungnam, 331-717, Korea
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47
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Kikkawa Y, Kurokawa K, Kimura R, Takahashi M, Kanesato M, Abe H. Solvent-induced morphological diversification in poly(l-lactide-b-ɛ-caprolactone) block copolymer thin films. Polym Degrad Stab 2010. [DOI: 10.1016/j.polymdegradstab.2010.01.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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48
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Kluge J, Fusaro F, Mazzotti M, Muhrer G. Production of PLGA micro- and nanocomposites by supercritical fluid extraction of emulsions: II. Encapsulation of Ketoprofen. J Supercrit Fluids 2009. [DOI: 10.1016/j.supflu.2009.05.002] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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49
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Bordes C, Fréville V, Ruffin E, Marote P, Gauvrit JY, Briançon S, Lantéri P. Determination of poly(epsilon-caprolactone) solubility parameters: application to solvent substitution in a microencapsulation process. Int J Pharm 2009; 383:236-43. [PMID: 19781605 DOI: 10.1016/j.ijpharm.2009.09.023] [Citation(s) in RCA: 137] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2009] [Revised: 09/04/2009] [Accepted: 09/11/2009] [Indexed: 10/20/2022]
Abstract
The evolution of regulation on chemical substances (i.e. REACH regulation) calls for the progressive substitution of toxic chemicals in formulations when suitable alternatives have been identified. In this context, the method of Hansen solubility parameters was applied to identify an alternative solvent less toxic than methylene chloride used in a microencapsulation process. During the process based on a multiple emulsion (W/O/W) with solvent evaporation/extraction method, the solvent has to dissolve a polymer, poly(epsilon-caprolactone) (PCL), which forms a polymeric matrix encapsulating or entrapping a therapeutic protein as the solvent is extracted. Therefore the three partial solubility parameters of PCL have been determined by a group contribution method, swelling experiments and turbidimetric titration. The results obtained allowed us to find a solvent, anisole, able to solubilize PCL and to form a multiple emulsion with aqueous solutions. A feasibility test was conducted under standard operating conditions and allowed the production of PCL microspheres.
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Affiliation(s)
- C Bordes
- Université de Lyon, F-69622, Lyon, France.
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50
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Foss WR, Anderl JN, Clausi AL, Burke PA. Diffusivities of dichloromethane in poly(lactide-co-glycolide). J Appl Polym Sci 2009. [DOI: 10.1002/app.29554] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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