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Targeting Agents in Biomaterial-Mediated Bone Regeneration. Int J Mol Sci 2023; 24:ijms24032007. [PMID: 36768328 PMCID: PMC9916506 DOI: 10.3390/ijms24032007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 01/13/2023] [Accepted: 01/17/2023] [Indexed: 01/21/2023] Open
Abstract
Bone diseases are a global public concern that affect millions of people. Even though current treatments present high efficacy, they also show several side effects. In this sense, the development of biocompatible nanoparticles and macroscopic scaffolds has been shown to improve bone regeneration while diminishing side effects. In this review, we present a new trend in these materials, reporting several examples of materials that specifically recognize several agents of the bone microenvironment. Briefly, we provide a subtle introduction to the bone microenvironment. Then, the different targeting agents are exposed. Afterward, several examples of nanoparticles and scaffolds modified with these agents are shown. Finally, we provide some future perspectives and conclusions. Overall, this topic presents high potential to create promising translational strategies for the treatment of bone-related diseases. We expect this review to provide a comprehensive description of the incipient state-of-the-art of bone-targeting agents in bone regeneration.
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Rivera P, Villegas C, Cabezas R, Pérez B, Torres A, de Dicastillo CL, Garrido L, Galvez P, Araya C, Romero J. Development of PLA suture materials by extrusion, electrospinning and supercritical CO2 impregnation of ibuprofen and naproxen. J Supercrit Fluids 2023. [DOI: 10.1016/j.supflu.2023.105854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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3
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Ren Q, Wu M, Wang L, Zheng W, Hikima Y, Semba T, Ohshima M. Light and strong poly (lactic acid)/ cellulose nanofiber nanocomposite foams with enhanced rheological and crystallization property. J Supercrit Fluids 2022. [DOI: 10.1016/j.supflu.2022.105758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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4
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Dual drug delivery system based on layered double hydroxides/carboxymethyl cellulose-poly ethylene oxide bionanocomposite electrospun fibrous mats: Fabrication, characterization, in-vitro and in-vivo studies. Int J Biol Macromol 2022; 222:3142-3154. [DOI: 10.1016/j.ijbiomac.2022.10.087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2022] [Revised: 09/15/2022] [Accepted: 10/10/2022] [Indexed: 11/05/2022]
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5
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Ivanova TA, Golubeva EN. Aliphatic Polyesters for Biomedical Purposes: Design and Kinetic Regularities of Degradation in vitro. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY B 2022. [DOI: 10.1134/s1990793122030162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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6
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Valor D, Montes A, Cózar A, Pereyra C, Martínez de la Ossa E. Development of Porous Polyvinyl Acetate/Polypyrrole/Gallic Acid Scaffolds Using Supercritical CO 2 as Tissue Regenerative Agents. Polymers (Basel) 2022; 14:polym14040672. [PMID: 35215583 PMCID: PMC8878901 DOI: 10.3390/polym14040672] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Revised: 01/31/2022] [Accepted: 02/06/2022] [Indexed: 01/15/2023] Open
Abstract
Scaffolds are advanced devices employed in tissue engineering, as they are intended to mimic the characteristics of extracellular matrices. In this respect, conjugated materials are gaining relevance in the manufacturing of the foams used for therapeutic scaffolds, since they can provide certain properties that are missing in the other polymers used to form the scaffolds. This work has, therefore, focused on the development of functional scaffolds formed by conjugated-non-conjugated polymers such as polyvinyl acetate and polypyrrole, impregnated with gallic acid as the model drug and produced by means of a supercritical CO2 foaming/impregnation process. The effects from a series of parameters such as pressure, temperature, depressurization rate, and contact time of the scaffold production process have been determined. The impregnated foams have been characterized according to their morphology, including their porosity and expansion factor, their drug loading and delivering capabilities, and their mechanical and electrical properties. The characterization of the experiments was carried out using scanning electron microscopy, liquid displacement, in vitro release, electrochemical impedance spectroscopy, and compression techniques. The results from our tests have revealed a considerable influence of all the input variables studied, as well as relevant interactions between them. Values close to 35% porosity were obtained, with a drug release of up to 10 h with a fast initial release. The best operating conditions were 353 K, 30 MPa, 0.5 MPa/min depressurization rate, and 1 h contact time. By means of the supercritical foaming/impregnation technique, scaffolds with potential in tissue engineering due to their studied properties were obtained.
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7
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Montes A, Valor D, Delgado L, Pereyra C, Martínez de la Ossa E. An Attempt to Optimize Supercritical CO 2 Polyaniline-Polycaprolactone Foaming Processes to Produce Tissue Engineering Scaffolds. Polymers (Basel) 2022; 14:488. [PMID: 35160477 PMCID: PMC8838718 DOI: 10.3390/polym14030488] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 01/22/2022] [Accepted: 01/24/2022] [Indexed: 12/13/2022] Open
Abstract
Conjugated polymers are biomaterials with high conductivity characteristics because of their molecular composition. However, they are too rigid and brittle for medical applications and therefore need to be combined with non-conductive polymers to overcome or lessen these drawbacks. This work has, consequently, focused on the development of three-dimensional scaffolds where conductive and non-conductive polymers have been produced by combining polycaprolactone (PCL) and polyaniline (PANI) by means of supercritical CO2 foaming techniques. To evaluate their therapeutic potential as implants, a series of experiments have been designed to determine the most influential variables in the production of the three-dimensional scaffolds, including temperature, pressure, polymer ratio and depressurization rate. Internal morphology, porosity, expansion factor, PANI loads, biodegradability, mechanical and electrical properties have been taken as the response variables. The results revealed a strong influence from all the input variables studied, as well as from their interactions. The best operating conditions tested were 70 °C, 100 bar, a ratio of 5:1 (PCL:PANI), a depressurization rate of 20 bar/min and a contact time of 1 h.
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Affiliation(s)
- Antonio Montes
- Department of Chemical Engineering and Food Technology, Faculty of Sciences, University of Cadiz, International Excellence Agrifood Campus (CeiA3), Campus Universitario Río San Pedro, 11510 Puerto Real, Cadiz, Spain; (D.V.); (L.D.); (C.P.); (E.M.d.l.O.)
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Czerwińska-Główka D, Krukiewicz K. Guidelines for a Morphometric Analysis of Prokaryotic and Eukaryotic Cells by Scanning Electron Microscopy. Cells 2021; 10:3304. [PMID: 34943812 PMCID: PMC8699492 DOI: 10.3390/cells10123304] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 11/11/2021] [Accepted: 11/24/2021] [Indexed: 11/17/2022] Open
Abstract
The invention of a scanning electron microscopy (SEM) pushed the imaging methods and allowed for the observation of cell details with a high resolution. Currently, SEM appears as an extremely useful tool to analyse the morphology of biological samples. The aim of this paper is to provide a set of guidelines for using SEM to analyse morphology of prokaryotic and eukaryotic cells, taking as model cases Escherichia coli bacteria and B-35 rat neuroblastoma cells. Herein, we discuss the necessity of a careful sample preparation and provide an optimised protocol that allows to observe the details of cell ultrastructure (≥ 50 nm) with a minimum processing effort. Highlighting the versatility of morphometric descriptors, we present the most informative parameters and couple them with molecular processes. In this way, we indicate the wide range of information that can be collected through SEM imaging of biological materials that makes SEM a convenient screening method to detect cell pathology.
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Affiliation(s)
| | - Katarzyna Krukiewicz
- Department of Physical Chemistry and Technology of Polymers, Silesian University of Technology, 44-100 Gliwice, Poland;
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Sekharan TR, Katari O, Ruhina Rahman SN, Pawde DM, Goswami A, Chandira RM, Shunmugaperumal T. Neoteric solvents for the pharmaceutical industry: an update. Drug Discov Today 2021; 26:1702-1711. [PMID: 33737071 DOI: 10.1016/j.drudis.2021.03.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 02/16/2021] [Accepted: 03/09/2021] [Indexed: 12/23/2022]
Affiliation(s)
- Thenrajan Raja Sekharan
- Department of Pharmaceutics, Vinayaka Mission's College of Pharmacy, Vinayaka Mission's Research Foundation (Deemed to be University), Salem, 636308, Tamil Nadu, India; Department of Pharmaceutics, Sankaralingam Bhuvaneswari College of Pharmacy, Anaikuttam, 626130, Sivakasi, Tamil Nadu, India
| | - Oly Katari
- National Institute of Pharmaceutical Education and Research (NIPER)-Guwahati, Sila Katamur (Halugurisuk), Changsari, Kamrup, Assam, 781101, India
| | - Syed Nazrin Ruhina Rahman
- National Institute of Pharmaceutical Education and Research (NIPER)-Guwahati, Sila Katamur (Halugurisuk), Changsari, Kamrup, Assam, 781101, India
| | - Datta Maroti Pawde
- National Institute of Pharmaceutical Education and Research (NIPER)-Guwahati, Sila Katamur (Halugurisuk), Changsari, Kamrup, Assam, 781101, India
| | - Abhinab Goswami
- National Institute of Pharmaceutical Education and Research (NIPER)-Guwahati, Sila Katamur (Halugurisuk), Changsari, Kamrup, Assam, 781101, India
| | - Rajappa Margret Chandira
- Department of Pharmaceutics, Vinayaka Mission's College of Pharmacy, Vinayaka Mission's Research Foundation (Deemed to be University), Salem, 636308, Tamil Nadu, India
| | - Tamilvanan Shunmugaperumal
- National Institute of Pharmaceutical Education and Research (NIPER)-Guwahati, Sila Katamur (Halugurisuk), Changsari, Kamrup, Assam, 781101, India.
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10
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Khodov I, Dyshin A, Efimov S, Ivlev D, Kiselev M. High-pressure NMR spectroscopy in studies of the conformational composition of small molecules in supercritical carbon dioxide. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113113] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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11
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Ngo TT, Hoffman L, Hoople GD, Trevena W, Shakya U, Barr G. Surface morphology and drug loading characterization of 3D-printed methacrylate-based polymer facilitated by supercritical carbon dioxide. J Supercrit Fluids 2020. [DOI: 10.1016/j.supflu.2020.104786] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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12
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Santos-Rosales V, Iglesias-Mejuto A, García-González CA. Solvent-Free Approaches for the Processing of Scaffolds in Regenerative Medicine. Polymers (Basel) 2020; 12:E533. [PMID: 32131405 PMCID: PMC7182956 DOI: 10.3390/polym12030533] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 02/12/2020] [Accepted: 02/17/2020] [Indexed: 01/12/2023] Open
Abstract
The regenerative medicine field is seeking novel strategies for the production of synthetic scaffolds that are able to promote the in vivo regeneration of a fully functional tissue. The choices of the scaffold formulation and the manufacturing method are crucial to determine the rate of success of the graft for the intended tissue regeneration process. On one hand, the incorporation of bioactive compounds such as growth factors and drugs in the scaffolds can efficiently guide and promote the spreading, differentiation, growth, and proliferation of cells as well as alleviate post-surgical complications such as foreign body responses and infections. On the other hand, the manufacturing method will determine the feasible morphological properties of the scaffolds and, in certain cases, it can compromise their biocompatibility. In the case of medicated scaffolds, the manufacturing method has also a key effect in the incorporation yield and retained activity of the loaded bioactive agents. In this work, solvent-free methods for scaffolds production, i.e., technological approaches leading to the processing of the porous material with no use of solvents, are presented as advantageous solutions for the processing of medicated scaffolds in terms of efficiency and versatility. The principles of these solvent-free technologies (melt molding, 3D printing by fused deposition modeling, sintering of solid microspheres, gas foaming, and compressed CO2 and supercritical CO2-assisted foaming), a critical discussion of advantages and limitations, as well as selected examples for regenerative medicine purposes are herein presented.
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Affiliation(s)
| | | | - Carlos A. García-González
- Department of Pharmacology, Pharmacy and Pharmaceutical Technology, I+D Farma group (GI-1645), Faculty of Pharmacy, Health Research Institute of Santiago de Compostela (IDIS), Agrupación Estratégica de Materiales (AeMAT), Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain; (V.S.-R.); (A.I.-M.)
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13
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Golubeva EN, Chumakova NA. Spin Probe Method for Diagnostics of Polyester Porous Matrixes Formed in Supercritical Carbon Dioxide (Review). RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY B 2020. [DOI: 10.1134/s1990793119070078] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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14
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Asikainen S, Paakinaho K, Kyhkynen AK, Hannula M, Malin M, Ahola N, Kellomäki M, Seppälä J. Hydrolysis and drug release from poly(ethylene glycol)-modified lactone polymers with open porosity. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.01.056] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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15
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Soh SH, Lee LY. Microencapsulation and Nanoencapsulation Using Supercritical Fluid (SCF) Techniques. Pharmaceutics 2019; 11:pharmaceutics11010021. [PMID: 30621309 PMCID: PMC6359585 DOI: 10.3390/pharmaceutics11010021] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2018] [Revised: 12/25/2018] [Accepted: 12/27/2018] [Indexed: 11/16/2022] Open
Abstract
The unique properties of supercritical fluids, in particular supercritical carbon dioxide (CO2), provide numerous opportunities for the development of processes for pharmaceutical applications. One of the potential applications for pharmaceuticals includes microencapsulation and nanoencapsulation for drug delivery purposes. Supercritical CO2 processes allow the design and control of particle size, as well as drug loading by utilizing the tunable properties of supercritical CO2 at different operating conditions (flow ratio, temperature, pressures, etc.). This review aims to provide a comprehensive overview of the processes and techniques using supercritical fluid processing based on the supercritical properties, the role of supercritical carbon dioxide during the process, and the mechanism of formulation production for each process discussed. The considerations for equipment configurations to achieve the various processes described and the mechanisms behind the representative processes such as RESS (rapid expansion of supercritical solutions), SAS (supercritical antisolvent), SFEE (supercritical fluid extraction of emulsions), PGSS (particles from gas-saturated solutions), drying, and polymer foaming will be explained via schematic representation. More recent developments such as fluidized bed coating using supercritical CO2 as the fluidizing and drying medium, the supercritical CO2 spray drying of aqueous solutions, as well as the production of microporous drug releasing devices via foaming, will be highlighted in this review. Development and strategies to control and optimize the particle morphology, drug loading, and yield from the major processes will also be discussed.
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Affiliation(s)
- Soon Hong Soh
- Newcastle Research and Innovation Institute, 80 Jurong East Street 21, #05-04 Devan Nair Institute for Employment & Employability, Singapore 609607, Singapore.
| | - Lai Yeng Lee
- Newcastle Research and Innovation Institute, 80 Jurong East Street 21, #05-04 Devan Nair Institute for Employment & Employability, Singapore 609607, Singapore.
- Newcastle University in Singapore, 537 Clementi Road, #06-01 SIT Building@Ngee Ann Polytechnic, Singapore 599493, Singapore.
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16
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Poly (lactic acid) blends: Processing, properties and applications. Int J Biol Macromol 2018; 125:307-360. [PMID: 30528997 DOI: 10.1016/j.ijbiomac.2018.12.002] [Citation(s) in RCA: 285] [Impact Index Per Article: 47.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Revised: 11/29/2018] [Accepted: 12/01/2018] [Indexed: 11/21/2022]
Abstract
Poly (lactic acid) or polylactide (PLA) is a commercial biobased, biodegradable, biocompatible, compostable and non-toxic polymer that has competitive material and processing costs and desirable mechanical properties. Thereby, it can be considered favorably for biomedical applications and as the most promising substitute for petroleum-based polymers in a wide range of commodity and engineering applications. However, PLA has some significant shortcomings such as low melt strength, slow crystallization rate, poor processability, high brittleness, low toughness, and low service temperature, which limit its applications. To overcome these limitations, blending PLA with other polymers is an inexpensive approach that could also tailor the final properties of PLA-based products. During the last two decades, researchers investigated the synthesis, processing, properties, and development of various PLA-based blend systems including miscible blends of poly l-lactide (PLLA) and poly d-lactide (PDLA), which generate stereocomplex crystals, binary immiscible/miscible blends of PLA with other thermoplastics, multifunctional ternary blends using a third polymer or fillers such as nanoparticles, as well as PLA-based blend foam systems. This article reviews all these investigations and compares the syntheses/processing-morphology-properties interrelationships in PLA-based blends developed so far for various applications.
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17
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El-Aassar M, Fakhry H. Polymerization and characterization of novel poly(acrylonitrile-co-styrene/pyrrole) nanoparticles: A comparison between microwave and conventional method. POLYM ADVAN TECHNOL 2017. [DOI: 10.1002/pat.4191] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- M.R. El-Aassar
- Polymer Materials Research Department, Advanced Technology and New Material Institute, City of Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab City; Universities and Research Institutes District; Alexandria 21934 Egypt
| | - Hala Fakhry
- Polymer Materials Research Department, Advanced Technology and New Material Institute, City of Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab City; Universities and Research Institutes District; Alexandria 21934 Egypt
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18
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Schardosim M, Soulié J, Poquillon D, Cazalbou S, Duployer B, Tenailleau C, Rey C, Hübler R, Combes C. Freeze-casting for PLGA/carbonated apatite composite scaffolds: Structure and properties. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 77:731-738. [DOI: 10.1016/j.msec.2017.03.302] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Revised: 03/28/2017] [Accepted: 03/31/2017] [Indexed: 12/21/2022]
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19
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20
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Moghadam MZ, Hassanajili S, Esmaeilzadeh F, Ayatollahi M, Ahmadi M. Formation of porous HPCL/LPCL/HA scaffolds with supercritical CO 2 gas foaming method. J Mech Behav Biomed Mater 2017; 69:115-127. [DOI: 10.1016/j.jmbbm.2016.12.014] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Revised: 12/18/2016] [Accepted: 12/20/2016] [Indexed: 11/25/2022]
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21
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Luo SH, Wu YC, Cao L, Wang QF, Chen SX, Hao ZF, Jing L, Wang ZY. One-pot preparation of polylactic acid-ibuprofen conjugates and their performance characterization. Polym Chem 2017. [DOI: 10.1039/c7py01213f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Merging esterification modification, carrier preparation, and chemical conjugation into a one-pot reaction as a new strategy for developing the polylactic acid-ibuprofen conjugates is described.
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Affiliation(s)
- Shi-He Luo
- School of Chemistry and Environment
- South China Normal University
- Key Laboratory of Theoretical Chemistry of Environment
- Ministry of Education
- Guangzhou 510006
| | - Yan-Cheng Wu
- School of Chemistry and Environment
- South China Normal University
- Key Laboratory of Theoretical Chemistry of Environment
- Ministry of Education
- Guangzhou 510006
| | - Liang Cao
- School of Chemistry and Environment
- South China Normal University
- Key Laboratory of Theoretical Chemistry of Environment
- Ministry of Education
- Guangzhou 510006
| | - Qun-Fang Wang
- School of Chemistry and Environment
- South China Normal University
- Key Laboratory of Theoretical Chemistry of Environment
- Ministry of Education
- Guangzhou 510006
| | - Shui-Xia Chen
- PCFM Lab
- School of Chemistry and Chemical Engineering
- Sun Yat-Sen University
- Guangzhou 510275
- P. R. China
| | - Zhi-Feng Hao
- School of Chemical Engineering and Light Industry
- Guangdong University of Technology
- Guangzhou 510006
- P. R. China
| | - Le Jing
- School of Chemistry and Environment
- South China Normal University
- Key Laboratory of Theoretical Chemistry of Environment
- Ministry of Education
- Guangzhou 510006
| | - Zhao-Yang Wang
- School of Chemistry and Environment
- South China Normal University
- Key Laboratory of Theoretical Chemistry of Environment
- Ministry of Education
- Guangzhou 510006
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22
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Jeevanandam J, Chan YS, Danquah MK. Nano-formulations of drugs: Recent developments, impact and challenges. Biochimie 2016; 128-129:99-112. [PMID: 27436182 DOI: 10.1016/j.biochi.2016.07.008] [Citation(s) in RCA: 93] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Accepted: 07/15/2016] [Indexed: 12/13/2022]
Abstract
Nano-formulations of medicinal drugs have attracted the interest of many researchers for drug delivery applications. These nano-formulations enhance the properties of conventional drugs and are specific to the targeted delivery site. Dendrimers, polymeric nanoparticles, liposomes, nano-emulsions and micelles are some of the nano-formulations that are gaining prominence in pharmaceutical industry for enhanced drug formulation. Wide varieties of synthesis methods are available for the preparation of nano-formulations to deliver drugs in biological system. The choice of synthesis methods depend on the size and shape of particulate formulation, biochemical properties of drug, and the targeted site. This article discusses recent developments in nano-formulation and the progressive impact on pharmaceutical research and industries. Additionally, process challenges relating to consistent generation of nano-formulations for drug delivery are discussed.
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Affiliation(s)
- Jaison Jeevanandam
- Department of Chemical Engineering, Faculty of Engineering and Science, Curtin University, CDT 250, 98009, Miri, Sarawak, Malaysia
| | - Yen San Chan
- Department of Chemical Engineering, Faculty of Engineering and Science, Curtin University, CDT 250, 98009, Miri, Sarawak, Malaysia.
| | - Michael K Danquah
- Department of Chemical Engineering, Faculty of Engineering and Science, Curtin University, CDT 250, 98009, Miri, Sarawak, Malaysia
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Supercritical CO2 assisted preparation of open-cell foams of linear low-density polyethylene and linear low-density polyethylene/carbon nanotube composites. CHINESE JOURNAL OF POLYMER SCIENCE 2016. [DOI: 10.1007/s10118-016-1806-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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24
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Hao X, Kaschta J, Pan Y, Liu X, Schubert DW. Intermolecular cooperativity and entanglement network in a miscible PLA/PMMA blend in the presence of nanosilica. POLYMER 2016. [DOI: 10.1016/j.polymer.2015.11.029] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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25
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Zhang J, Yang SG, Ding JX, Li ZM. Tailor-made poly(l-lactide)/poly(lactide-co-glycolide)/hydroxyapatite composite scaffolds prepared via high-pressure compression molding/salt leaching. RSC Adv 2016. [DOI: 10.1039/c6ra06906a] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
The degradation rate, hydrophilicity, and mechanical properties of PLLA/PLGA/HA scaffolds can be tuned by adjusting the composition. Such tailor-made scaffolds are hopeful to address the specific requirements of the regenerated tissue.
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Affiliation(s)
- Jin Zhang
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- P. R. China
| | - Shu-Gui Yang
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- P. R. China
| | - Jian-Xun Ding
- Key Laboratory of Polymer Ecomaterials
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- P. R. China
| | - Zhong-Ming Li
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- P. R. China
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Mohiti-Asli M, Saha S, Murphy SV, Gracz H, Pourdeyhimi B, Atala A, Loboa EG. Ibuprofen loaded PLA nanofibrous scaffolds increase proliferation of human skin cells in vitro and promote healing of full thickness incision wounds in vivo. J Biomed Mater Res B Appl Biomater 2015; 105:327-339. [PMID: 26509902 DOI: 10.1002/jbm.b.33520] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Revised: 07/03/2015] [Accepted: 07/18/2015] [Indexed: 12/18/2022]
Abstract
This article presents successful incorporation of ibuprofen in polylactic acid (PLA) nanofibers to create scaffolds for the treatment of both acute and chronic wounds. Nanofibrous PLA scaffolds containing 10, 20, or 30 wt % ibuprofen were created and ibuprofen release profiles quantified. In vitro cytotoxicity to human epidermal keratinocytes (HEK) and human dermal fibroblasts (HDF) of the three scaffolds with varying ibuprofen concentrations were evaluated and compared to pure PLA nanofibrous scaffolds. Thereafter, scaffolds loaded with ibuprofen at the concentration that promoted human skin cell viability and proliferation (20 wt %) were evaluated in vivo in nude mice using a full thickness skin incision model to determine the ability of these scaffolds to promote skin regeneration and/or assist with scarless healing. Both acellular and HEK and HDF cell-seeded 20 wt % ibuprofen loaded nanofibrous bandages reduced wound contraction compared with wounds treated with Tegaderm™ and sterile gauze. Newly regenerated skin on wounds treated with cell-seeded 20 wt % ibuprofen bandages exhibited significantly greater blood vessel formation relative to acellular ibuprofen bandages. We have found that degradable anti-inflammatory scaffolds containing 20 wt % ibuprofen promote human skin cell viability and proliferation in vitro, reduce wound contraction in vivo, and when seeded with skin cells, also enhance new blood vessel formation. The approaches and results reported here hold promise for multiple skin tissue engineering and wound healing applications. © 2015 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 105B: 327-339, 2017.
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Affiliation(s)
- M Mohiti-Asli
- Joint Department of Biomedical Engineering at University of North Carolina at Chapel Hill, North Carolina State University, Raleigh, North Carolina, 27695
| | - S Saha
- Joint Department of Biomedical Engineering at University of North Carolina at Chapel Hill, North Carolina State University, Raleigh, North Carolina, 27695
| | - S V Murphy
- Wake Forest Institute for Regenerative Medicine, Wake Forest University School of Medicine, Winston-Salem, North Carolina, 27157
| | - H Gracz
- Department of Molecular and Structural Biochemistry, North Carolina State University, Raleigh, North Carolina, 27695
| | - B Pourdeyhimi
- College of Textiles at North Carolina State University, Raleigh, North Carolina, 27695
| | - A Atala
- Wake Forest Institute for Regenerative Medicine, Wake Forest University School of Medicine, Winston-Salem, North Carolina, 27157
| | - E G Loboa
- Joint Department of Biomedical Engineering at University of North Carolina at Chapel Hill, North Carolina State University, Raleigh, North Carolina, 27695.,Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina, 27695
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El-Newehy MH, Osman SM, Refat MS, Al-Deyab SS, El-Faham A. Microwave Synthesis of Copolymers Based on Itaconic Acid Moiety and Their Utility for Scavenging of Copper (II) and Lead (II). JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2015. [DOI: 10.1080/10601325.2015.1039335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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28
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Drug loading of polymer implants by supercritical CO 2 assisted impregnation: A review. J Control Release 2015; 209:248-59. [DOI: 10.1016/j.jconrel.2015.05.002] [Citation(s) in RCA: 158] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2015] [Revised: 04/30/2015] [Accepted: 05/02/2015] [Indexed: 01/24/2023]
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Gao L, Li C, Chen F, Liu C. Fabrication and characterization of toughness-enhanced scaffolds comprising β-TCP/POC using the freeform fabrication system with micro-droplet jetting. ACTA ACUST UNITED AC 2015; 10:035009. [PMID: 26107985 DOI: 10.1088/1748-6041/10/3/035009] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A novel elastomeric material, poly(1,8-octanediol-co-citrate) (POC), has demonstrated tremendous versatility because of its advantageous toughness, tunable degradation properties, and efficient drug release capability. In this study, POC was used to improve the mechanical performance of β-tricalcium phosphate (β-Ca3(PO4)2, β-TCP). (3D) β-TCP/POC composite scaffolds were fabricated by a 3D printing technique based on the freeform fabrication system with micro-droplet jetting (FFS-MDJ). The physiochemical properties, compressive modulus, drug release behavior, and cell response of β-TCP/POC composite scaffolds were systematically investigated. The results showed that β-TCP/POC scaffolds had uniform macropores of 300-400 μm, porosity of approximately 45%, biodegradability in phosphate-buffered saline, and high compressive modulus of 50-75 MPa. With the incorporation of POC into β-TCP, the toughness of the composite scaffolds was improved significantly. Moreover, β-TCP/POC scaffolds exhibited sustained drug (ibuprofen (IBU)) release capability. Additionally, β-TCP/POC scaffolds facilitated C2C12 cell attachment and proliferation. It was indicated that the 3D-printed porous β-TCP/POC scaffolds with high compressive modulus and good drug delivery performance might be a promising candidate for bone defect repair.
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Affiliation(s)
- Li Gao
- The State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, People's Republic of China. Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, People's Republic of China. Engineering Research Center for Biomedical Materials of Ministry of Education, East China University of Science and Technology, Shanghai 200237, People's Republic of China
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Li XK, Lu H, Cao GP, Qian YH, Chen LH, Zhang RH, Liu HL, Shi YH. Experimental Study of the Synergistic Plasticizing Effect of Carbon Dioxide and Ibuprofen on the Glass Transition Temperature of Poly(methyl methacrylate). Ind Eng Chem Res 2014. [DOI: 10.1021/ie404270g] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xue-Kun Li
- UNILAB, State Key Lab of
Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Hui Lu
- UNILAB, State Key Lab of
Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Gui-Ping Cao
- UNILAB, State Key Lab of
Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Ying-Hui Qian
- UNILAB, State Key Lab of
Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Li-Hua Chen
- UNILAB, State Key Lab of
Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Ren-Han Zhang
- UNILAB, State Key Lab of
Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Hong-Lai Liu
- UNILAB, State Key Lab of
Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Yun-Hai Shi
- UNILAB, State Key Lab of
Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
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Xing Z, Wang M, Du G, Xiao T, Liu W, Qiang D, Wu G. Preparation of microcellular polystyrene/polyethylene alloy foams by supercritical CO2 foaming and analysis by X-ray microtomography. J Supercrit Fluids 2013. [DOI: 10.1016/j.supflu.2013.06.003] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Bhamidipati M, Scurto AM, Detamore MS. The future of carbon dioxide for polymer processing in tissue engineering. TISSUE ENGINEERING PART B-REVIEWS 2013; 19:221-32. [PMID: 23289736 DOI: 10.1089/ten.teb.2012.0361] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
The use of CO2 for scaffold fabrication in tissue engineering was popularized in the mid-1990 s as a tool for producing polymeric foam scaffolds, but had fallen out of favor to some extent, in part due to challenges with pore interconnectivity. Pore interconnectivity issues have since been resolved by numerous dedicated studies that have collectively outlined how to control the appropriate parameters to achieve a pore structure desirable for tissue regeneration. In addition to CO2 foaming, several groups have leveraged CO2 as a swelling agent to impregnate scaffolds with drugs and other bioactive additives, and for encapsulation of plasmids within scaffolds for gene delivery. Moreover, in contrast to CO2 foaming, which typically relies on supercritical CO2 at very high pressures, CO2 at much lower pressures has also been used to sinter polymeric microspheres together in the presence of cells to create cell-seeded scaffolds in a single step. CO2 has a number of advantages for polymer processing in tissue engineering, including its ease of use, low cost, and the opportunity to circumvent the use of organic solvents. Building on these advantages, and especially now with the tremendous precedent that has paved the way in defining operating parameters, and making the technology accessible for new groups to adapt, we invite and encourage our colleagues in the field to leverage CO2 as a new tool to enhance their own respective unique capabilities.
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Affiliation(s)
- Manjari Bhamidipati
- Bioengineering Graduate Program, University of Kansas, Lawrence, Kansas 66045-7618, USA
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Hassan HHAM, El-Husseiny AF, Abo-Elfadl AG, El-Faham A, Albericio F. Synthesis and Thermal Properties of Novel Polyamides Containing α-Amino Acid Moieties: Structure-Property Relationship. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2012. [DOI: 10.1080/10601325.2012.630935] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Lee JTY, Chow KL. SEM sample preparation for cells on 3D scaffolds by freeze-drying and HMDS. SCANNING 2012; 34:12-25. [PMID: 22532079 DOI: 10.1002/sca.20271] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2011] [Accepted: 07/06/2011] [Indexed: 05/06/2023]
Abstract
Common dehydration methods of cells on biomaterials for scanning electron microscopy (SEM) include air drying, hexamethyldisilazane (HMDS) or tetramethysilane (TMS) treatment and critical point drying (CPD). On the other side, freeze-drying has been widely employed in dehydrating biological samples and also in preparing porous biomaterial scaffolds but not in preparing cells on three-dimensional (3D) biomaterials for SEM examination. In this study, we compare cells on porous hydroxyapatite (HA) prepared by air drying, HMDS and freeze-drying. The effects of fixation and using phosphate buffered saline (PBS) in the fixation were also assessed on three porous calcium phosphate (CaP) materials, namely, HA, α-tricalcium phosphate (α-TCP) and β-tricalcium phosphate (β-TCP) samples. There is no significant difference in samples prepared by HMDS treatment and freeze-drying viewed at low magnification. Besides, it is better not to use phosphate buffer in the fixation step for CaP materials to avoid undesirable spontaneous precipitation of CaPs. On the other hand, fewer exchanges of liquids are required for freeze-drying and hence chemical fixation may not be absolutely required for samples prepared by freeze-drying. Other technical details of the preparation were also investigated and discussed. This study suggests both HMDS and freeze-drying can be employed to dehydrate cells on 3D scaffolds for SEM examination.
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Affiliation(s)
- Juliana Tsz Yan Lee
- Bioengineering Graduate Program, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong.
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Mou ZL, Zhao LJ, Zhang QA, Zhang J, Zhang ZQ. Preparation of porous PLGA/HA/collagen scaffolds with supercritical CO2 and application in osteoblast cell culture. J Supercrit Fluids 2011. [DOI: 10.1016/j.supflu.2011.07.003] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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38
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Design of submicron and nanoparticle delivery systems using supercritical carbon dioxide-mediated processes: an overview. Ther Deliv 2011; 2:259-77. [DOI: 10.4155/tde.10.82] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Supercritical carbon dioxide technology is an environmentally benign technique that allows precise control of particle morphology, while minimizing organic solvent use for a wide variety of biomedical and pharmaceutical applications. Supercritical carbon dioxide processes have benefits over the conventional particle formation methods in terms of improved control, flexibility and operational ease. This article gives an insight into a variety of supercritical fluid techniques relevant to drug formulation, recent advances and novel applications in the field of controlled delivery. These new methods have been designed to alleviate the scaling-up of the traditional methods for nanoparticle formulation either in the form of polymeric scaffolds, impregnation or nanoencapsules using a simple one-step process to produce micron-size particles.
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Yoda S, Sato K, Oyama HT. Impregnation of paclitaxel into poly(dl-lactic acid) using high pressure mixture of ethanol and carbon dioxide. RSC Adv 2011. [DOI: 10.1039/c1ra00070e] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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