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Kuo YC, Lin SY, De S, Rajesh R. Regeneration of Pancreatic Cells Using Optimized Nanoparticles and l-Glutamic Acid-Gelatin Scaffolds with Controlled Topography and Grafted Activin A/BMP4. ACS Biomater Sci Eng 2023; 9:6208-6224. [PMID: 37882705 DOI: 10.1021/acsbiomaterials.3c00791] [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] [Indexed: 10/27/2023]
Abstract
Regeneration of insulin-producing cells (IPCs) from induced pluripotent stem cells (iPSCs) under controlled conditions has a lot of promise to emulate the pancreatic mechanism in vivo as a foundation of cell-based diabetic therapy. l-Glutamic acid-gelatin scaffolds with orderly pore sizes of 160 and 200 μm were grafted with activin A and bone morphogenic proteins 4 (BMP4) to differentiate iPSCs into definitive endoderm (DE) cells, which were then guided with fibroblast growth factor 7 (FGF7)-grafted retinoic acid (RA)-loaded solid lipid nanoparticles (FR-SLNs) to harvest IPCs. Response surface methodology was adopted to optimize the l-glutamic acid-to-gelatin ratio of scaffolds and to optimize surfactant concentration and lipid proportion in FR-SLNs. Experimental results of immunofluorescence, flow cytometry, and western blots revealed that activin A (100 ng/mL)-BMP4 (50 ng/mL)-l-glutamic acid (5%)-gelatin (95%) scaffolds provoked the largest number of SOX17-positive DE cells from iPSCs. Treatment with FGF7 (50 ng/mL)-RA (600 ng/mL)-SLNs elicited the highest number of PDX1-positive β-cells from differentiated DE cells. To imitate the natural pancreas, the scaffolds with controlled topography were appropriate for IPC production with sufficient insulin secretion. Hence, the current scheme using FR-SLNs and activin A-BMP4-l-glutamic acid-gelatin scaffolds in the two-stage differentiation of iPSCs can be promising for replacing impaired β-cells in diabetic management.
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Affiliation(s)
- Yung-Chih Kuo
- Department of Chemical Engineering, National Chung Cheng University, Chia-Yi, Taiwan 62102, ROC
- Advanced Institute of Manufacturing with High-tech Innovations, National Chung Cheng University, Chia-Yi, Taiwan 62102, ROC
| | - Sheng-Yuan Lin
- Department of Chemical Engineering, National Chung Cheng University, Chia-Yi, Taiwan 62102, ROC
| | - Sourav De
- Department of Chemical Engineering, National Chung Cheng University, Chia-Yi, Taiwan 62102, ROC
| | - Rajendiran Rajesh
- Department of Chemical Engineering, National Chung Cheng University, Chia-Yi, Taiwan 62102, ROC
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Yousaf R, Khan MI, Akhtar MF, Madni A, Sohail MF, Saleem A, Irshad K, Sharif A, Rana M. Development and in-vitro evaluation of chitosan and glyceryl monostearate based matrix lipid polymer hybrid nanoparticles (LPHNPs) for oral delivery of itraconazole. Heliyon 2023; 9:e14281. [PMID: 36925532 PMCID: PMC10010992 DOI: 10.1016/j.heliyon.2023.e14281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 02/23/2023] [Accepted: 03/01/2023] [Indexed: 03/11/2023] Open
Abstract
Itraconazole (ICZ) is a broad spectrum antifungal drug, but used as second or third line therapy due to its low and erratic oral bioavailability. This work was carried out to prepare and characterize matrix type lipid-polymer hybrid nanoparticles (LPHNPs) for dissolution enhancement of ICZ. LPHNPs were prepared using solvent diffusion/emulsification technique. Matrix LPHNPs were composed of chitosan (polymer), glyceryl monostearate (lipid) and poloxamer 188 (stabilizer). LPHNPs loaded with ICZ (LPHNPs-1, LPHNPs-2, LPHNPs-3 and LPHNPs-4) were developed using varying concentration of chitosan whereas LPHNPs (LPHNPs-5, LPHNPs-6, LPHNPs-7 and LPHNPs-8) were prepared using varying concentrations of poloxamer 188. LPHNPs loaded with ICZ were further evaluated for entrapment efficiency, particle size, polydispersity index (PDI), zeta potential and dissolution profiles at biorelevant pH conditions. The particle size (LPHNPs-1 to LPHNPs-4) was found to be in range of 421-588 nm with PDI values 0.34-0.41. The particles size of LPHNPs-5 to LPHNPs-8 was found to be in range of 489-725 nm with PDI 0.34-0.74. The entrapment efficiency of LPHNPs-1 to LPHNPs-4 was found to be in range of 85.21%-91.34%. The entrapment efficiency of LPHNPs-5 to LPHNPs-8 was found to be in range 78.32%-90.44%. . The scanning electron microscopy of optimized formulations LPHNPs-1 and LPHNPs-5 indicated formation of oval shaped nanoparticles. DSC thermogram of ICZ loaded LPHNPs also depicted the conversion of crystalline form of ICZ into amorphous form demonstrating the internalization and dissolution enhancement of drug in the hybrid matrix. The cumulative drug dissolved at acidic pH 1.2 was found to be 23.3% and 19.8% for LPHNPs-1 and LPHNPs-5 respectively. Similarly at basic pH values 7.4, cumulative amount of drug dissolved was 90.2% and 83.4% for LPHNPs-1 and LPHNPs-5 respectively. Drug dissolution kinetics exhibited fickian diffusion best described by Korse-meyer Peppas model. The results suggested that chitosan and glyceryl monostearate based matrix LPHNPs could be used as promising approach for dissolution enhancement of ICZ which could further increase its bioavailability.
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Affiliation(s)
- Rimsha Yousaf
- Riphah Institute of Pharmaceutical Sciences, Riphah International University, Lahore Campus, 54000, Lahore, Pakistan
| | - Muhammad Imran Khan
- Riphah Institute of Pharmaceutical Sciences, Riphah International University, Lahore Campus, 54000, Lahore, Pakistan
| | - Muhammad Furqan Akhtar
- Riphah Institute of Pharmaceutical Sciences, Riphah International University, Lahore Campus, 54000, Lahore, Pakistan
| | - Asadullah Madni
- Department of Pharmaceutics, Faculty of Pharmacy, The Islamia University of Bahawalpur, Bahawalpur, 63100, Pakistan
| | - Muhammad Farhan Sohail
- Riphah Institute of Pharmaceutical Sciences, Riphah International University, Lahore Campus, 54000, Lahore, Pakistan
| | - Ammara Saleem
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, Government College University Faisalabad, Pakistan
| | - Kanwal Irshad
- Department of Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences, Government College University Faisalabad, Pakistan
| | - Ali Sharif
- Institute of Pharmacy, Faculty of Pharmaceutical and Allied Health Sciences, Lahore College for Women University, Lahore, Pakistan
| | - Maria Rana
- Riphah Institute of Pharmaceutical Sciences, Riphah International University, Lahore Campus, 54000, Lahore, Pakistan
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Sodeifian G, Usefi MMB. Solubility, Extraction, and Nanoparticles Production in Supercritical Carbon Dioxide: A Mini‐Review. CHEMBIOENG REVIEWS 2022. [DOI: 10.1002/cben.202200020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Gholamhossein Sodeifian
- University of Kashan Faculty of Engineering, Department of Chemical Engineering 87317-53153 Kashan Iran
- University of Kashan Laboratory of Supercritical Fluids and Nanotechnology 87317-53153 Kashan Iran
| | - Mohammad Mahdi Behvand Usefi
- University of Kashan Faculty of Engineering, Department of Chemical Engineering 87317-53153 Kashan Iran
- University of Kashan Laboratory of Supercritical Fluids and Nanotechnology 87317-53153 Kashan Iran
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Milovanović S, Lukić I. An overview on the application of supercritical carbon dioxide for the processing of pharmaceuticals. ARHIV ZA FARMACIJU 2022. [DOI: 10.5937/arhfarm72-39999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Supercritical carbon dioxide (scCO2) application in the pharmaceutical industry is still undeveloped regardless of significant research interests in this processing medium shown in the last decades. ScCO2 technologies can improve drug solubility, bioavailability, and therapeutic effect. These technologies can lead to the development of new formulations that will contribute to a decrease in drug dose, medication frequency, and increase patients' well-being. Considering the significant decrease in the price of high-pressure equipment and society's growing need for cleaner production and safer products, it is expected that symbiosis between supercritical fluid and pharmaceutical technologies will happen soon. Therefore, this review was focused on the latest contributions of scCO2 technologies to the pharmaceutical field. The main aim was to bring these technologies closer to pharmaceutical specialists. For this purpose, the most commonly used technologies were explained and discussed: the preparation of solid dispersions, polymer impregnation with drugs, and drug micro/nanoparticle production using scCO2.
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Influence of Process Design on the Preparation of Solid Lipid Nanoparticles by an Ultrasonic-Nanoemulsification Method. Processes (Basel) 2021. [DOI: 10.3390/pr9081265] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
In recent years, lipid-based nanosystems have emerged as a promising class of nanocarriers for encapsulating many active agents. Solid lipid nanoparticles (SLNs) provide good stability (colloidal as well as physical) and high biocompatibility. Appropriate design of the carrier structure through a selection of components and preparation methods allows us to obtain formulations with desired physicochemical parameters and biological properties. The present contribution has been carried out to investigate SLNs containing biocompatible phosphatidylcholine mixed with non-ionic surfactant Tween 60 as stabilizing agents. The internal lipid phase consisted of glyceryl monostearate was confirmed as safe for drug delivery by the Food and Drug Administration. The SLNs were fabricated by ultrasonic-nanoemulsification method. The preparation process was optimized in regard to variable parameters such as ultrasonication time and used amplitude and number of cycles. The sizes of the studied nanoparticles along with the size distribution were determined by dynamic light scattering (DLS), while shape and morphology were determined by atomic force microscopy (AFM) and transmission electron microscopy (TEM). The colloidal stability was measured by a turbidimetric method. The physical state of SLNs was characterized using differential scanning calorimetry (DSC). The obtained results indicate that the proposed SLNs may provide great potential for design and preparation of novel delivery nanosystems with a variety of possible applications.
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López-Iglesias C, López ER, Fernández J, Landin M, García-González CA. Modeling of the Production of Lipid Microparticles Using PGSS ® Technique. Molecules 2020; 25:molecules25214927. [PMID: 33114452 PMCID: PMC7663659 DOI: 10.3390/molecules25214927] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 10/16/2020] [Accepted: 10/23/2020] [Indexed: 11/16/2022] Open
Abstract
Solid lipid microparticles (SLMPs) are attractive carriers as delivery systems as they are stable, easy to manufacture and can provide controlled release of bioactive agents and increase their efficacy and/or safety. Particles from Gas-Saturated Solutions (PGSS®) technique is a solvent-free technology to produce SLMPs, which involves the use of supercritical CO2 (scCO2) at mild pressures and temperatures for the melting of lipids and atomization into particles. The determination of the key processing variables is crucial in PGSS® technique to obtain reliable and reproducible microparticles, therefore the modelling of SLMPs production process and variables control are of great interest to obtain quality therapeutic systems. In this work, the melting point depression of a commercial lipid (glyceryl monostearate, GMS) under compressed CO2 was studied using view cell experiments. Based on an unconstrained D-optimal design for three variables (nozzle diameter, temperature and pressure), SLMPs were produced using the PGSS® technique. The yield of production was registered and the particles characterized in terms of particle size distribution. Variable modeling was carried out using artificial neural networks and fuzzy logic integrated into neurofuzzy software. Modeling results highlight the main effect of temperature to tune the mean diameter SLMPs, whereas the pressure-nozzle diameter interaction is the main responsible in the SLMPs size distribution and in the PGSS® production yield.
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Affiliation(s)
- Clara López-Iglesias
- Department of Pharmacology, Pharmacy and Pharmaceutical Technology, I+D Farma group (GI-1645), Faculty of Pharmacy, Agrupación Estratégica de Materiales (AeMAT) and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain;
- Correspondence: (C.L.-I.); (C.A.G.-G.); Tel.: +34-881-814-882 (C.L.-I. & C.A.G.-G.)
| | - Enriqueta R. López
- Laboratorio de Propiedades Termofísicas, Grupo NaFoMat, Departamento de Física Aplicada, Facultad de Física, Agrupación Estratégica de Materiales (AeMAT), Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain; (E.R.L.); (J.F.)
| | - Josefa Fernández
- Laboratorio de Propiedades Termofísicas, Grupo NaFoMat, Departamento de Física Aplicada, Facultad de Física, Agrupación Estratégica de Materiales (AeMAT), Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain; (E.R.L.); (J.F.)
| | - Mariana Landin
- Department of Pharmacology, Pharmacy and Pharmaceutical Technology, I+D Farma group (GI-1645), Faculty of Pharmacy, Agrupación Estratégica de Materiales (AeMAT) and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain;
| | - Carlos A. García-González
- Department of Pharmacology, Pharmacy and Pharmaceutical Technology, I+D Farma group (GI-1645), Faculty of Pharmacy, Agrupación Estratégica de Materiales (AeMAT) and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain;
- Correspondence: (C.L.-I.); (C.A.G.-G.); Tel.: +34-881-814-882 (C.L.-I. & C.A.G.-G.)
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Klettenhammer S, Ferrentino G, Morozova K, Scampicchio M. Novel Technologies Based on Supercritical Fluids for the Encapsulation of Food Grade Bioactive Compounds. Foods 2020; 9:E1395. [PMID: 33023107 PMCID: PMC7601192 DOI: 10.3390/foods9101395] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 09/25/2020] [Accepted: 09/28/2020] [Indexed: 11/16/2022] Open
Abstract
In recent years, the demand for nutritive, functional and healthy foods has increased. This trend has induced the food industry to investigate novel technologies able to produce ingredients with enhanced functional and physicochemical properties. Among these technologies, one of the most promising is the encapsulation based on supercritical fluids. Thanks to the inherent absence of organic solvent, the low temperature of the process to reach a supercritical state and the capacity to dissolve lipid soluble bioactives, the encapsulation with supercritical carbon dioxide represents a green technology to produce several functional ingredients, with enhanced stability, high load and tailored protection from environmental factors. Furthermore, from the fine-tuning of the process parameters like temperature, pressure and flow rate, the resulting functional ingredient can be easily designed to tailor the controlled release of the bioactive, or to reach specific levels of taste, odor and color. Accordingly, the aim of the present review is to summarize the state of the art of the techniques based on supercritical carbon dioxide for the encapsulation of bioactive compounds of food interest. Pros and cons of such techniques will be highlighted, giving emphasis to their innovative aspects that could be of interest to the food industry.
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Affiliation(s)
| | - Giovanna Ferrentino
- Faculty of Science and Technology, Free University of Bolzano, Piazza Università 1, 39100 Bolzano, Italy; (S.K.); (K.M.); (M.S.)
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López-Iglesias C, Quílez C, Barros J, Velasco D, Alvarez-Lorenzo C, Jorcano JL, Monteiro FJ, García-González CA. Lidocaine-Loaded Solid Lipid Microparticles (SLMPs) Produced from Gas-Saturated Solutions for Wound Applications. Pharmaceutics 2020; 12:E870. [PMID: 32932682 PMCID: PMC7557821 DOI: 10.3390/pharmaceutics12090870] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 09/06/2020] [Accepted: 09/09/2020] [Indexed: 01/17/2023] Open
Abstract
The delivery of bioactive agents using active wound dressings for the management of pain and infections offers improved performances in the treatment of wound complications. In this work, solid lipid microparticles (SLMPs) loaded with lidocaine hydrochloride (LID) were processed and the formulation was evaluated regarding its ability to deliver the drug at the wound site and through the skin barrier. The SLMPs of glyceryl monostearate (GMS) were prepared with different LID contents (0, 1, 2, 4, and 10 wt.%) using the solvent-free and one-step PGSS (Particles from Gas-Saturated Solutions) technique. PGSS exploits the use of supercritical CO2 (scCO2) as a plasticizer for lipids and as pressurizing agent for the atomization of particles. The SLMPs were characterized in terms of shape, size, and morphology (SEM), physicochemical properties (ATR-IR, XRD), and drug content and release behavior. An in vitro test for the evaluation of the influence of the wound environment on the LID release rate from SLMPs was studied using different bioengineered human skin substitutes obtained by 3D-bioprinting. Finally, the antimicrobial activity of the SLMPs was evaluated against three relevant bacteria in wound infections (Escherichia coli, Staphylococcus aureus, and Pseudomonas aeruginosa). SLMPs processed with 10 wt.% of LID showed a remarkable performance to provide effective doses for pain relief and preventive infection effects.
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Affiliation(s)
- Clara López-Iglesias
- Department of Pharmacology, Pharmacy and Pharmaceutical Technology, I+D Farma group (GI-1645), Faculty of Pharmacy, Agrupación Estratégica de Materiales (AeMAT) and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain; (C.L.-I.); (C.A.-L.)
| | - Cristina Quílez
- Department of Bioengineering and Aerospace Engineering, Universidad Carlos III de Madrid (UC3M), 28911 Leganés (Madrid), Spain; (C.Q.); (D.V.); (J.L.J.)
| | - Joana Barros
- Instituto de Investigação e Inovação em Saúde da Universidade do Porto (i3S), Instituto de Engenharia Biomédica (INEB), Faculdade de Engenharia (FEUP), Universidade do Porto, 4200-135 Porto, Portugal; (J.B.); (F.J.M.)
| | - Diego Velasco
- Department of Bioengineering and Aerospace Engineering, Universidad Carlos III de Madrid (UC3M), 28911 Leganés (Madrid), Spain; (C.Q.); (D.V.); (J.L.J.)
| | - Carmen Alvarez-Lorenzo
- Department of Pharmacology, Pharmacy and Pharmaceutical Technology, I+D Farma group (GI-1645), Faculty of Pharmacy, Agrupación Estratégica de Materiales (AeMAT) and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain; (C.L.-I.); (C.A.-L.)
| | - José L. Jorcano
- Department of Bioengineering and Aerospace Engineering, Universidad Carlos III de Madrid (UC3M), 28911 Leganés (Madrid), Spain; (C.Q.); (D.V.); (J.L.J.)
| | - Fernando J. Monteiro
- Instituto de Investigação e Inovação em Saúde da Universidade do Porto (i3S), Instituto de Engenharia Biomédica (INEB), Faculdade de Engenharia (FEUP), Universidade do Porto, 4200-135 Porto, Portugal; (J.B.); (F.J.M.)
| | - Carlos A. García-González
- Department of Pharmacology, Pharmacy and Pharmaceutical Technology, I+D Farma group (GI-1645), Faculty of Pharmacy, Agrupación Estratégica de Materiales (AeMAT) and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain; (C.L.-I.); (C.A.-L.)
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9
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Design and processing of drug delivery formulations of therapeutic deep eutectic systems for tuberculosis. J Supercrit Fluids 2020. [DOI: 10.1016/j.supflu.2020.104826] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Yang J, Ciftci ON. Effect of Chemical Structure of Solid Lipid Matrix on Its Melting Behavior and Volumetric Expansion in Pressurized Carbon Dioxide. J AM OIL CHEM SOC 2019. [DOI: 10.1002/aocs.12305] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Junsi Yang
- Department of Food Science and Technology University of Nebraska‐Lincoln Lincoln NE 68588‐6205 USA
| | - Ozan N. Ciftci
- Department of Food Science and Technology University of Nebraska‐Lincoln Lincoln NE 68588‐6205 USA
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Gudeman J, Yang J, Ciftci ON. Formation of Low‐Density and Free‐Flowing Hollow Microparticles from Butter and Fractionated Palm Oil Mixture. J AM OIL CHEM SOC 2018. [DOI: 10.1002/aocs.12171] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Joshua Gudeman
- Department of Food Science and Technology University of Nebraska‐Lincoln, 1901 N. 21 St. Food Innovation Center Lincoln NE 68588‐6205 USA
| | - Junsi Yang
- Department of Food Science and Technology University of Nebraska‐Lincoln, 1901 N. 21 St. Food Innovation Center Lincoln NE 68588‐6205 USA
| | - Ozan N. Ciftci
- Department of Food Science and Technology University of Nebraska‐Lincoln, 1901 N. 21 St. Food Innovation Center Lincoln NE 68588‐6205 USA
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Supercritical carbon dioxide-based technologies for the production of drug nanoparticles/nanocrystals - A comprehensive review. Adv Drug Deliv Rev 2018; 131:22-78. [PMID: 30026127 DOI: 10.1016/j.addr.2018.07.010] [Citation(s) in RCA: 112] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 07/02/2018] [Accepted: 07/10/2018] [Indexed: 02/06/2023]
Abstract
Low drug bioavailability, which is mostly a result of poor aqueous drug solubilities and of inadequate drug dissolution rates, is one of the most significant challenges that pharmaceutical companies are currently facing, since this may limit the therapeutic efficacy of marketed drugs, or even result in the discard of potential highly effective drug candidates during developmental stages. Two of the main approaches that have been implemented in recent years to overcome poor drug solubility/dissolution issues have frequently involved drug particle size reduction (i.e., micronization/nanonization) and/or the modification of some of the physicochemical and structural properties of poorly water soluble drugs. A large number of particle engineering methodologies have been developed, tested, and applied in the synthesis and control of particle size/particle-size distributions, crystallinities, and polymorphic purities of drug micro- and nano-particles/crystals. In recent years pharmaceutical processing using supercritical fluids (SCF), in general, and supercritical carbon dioxide (scCO2), in particular, have attracted a great attention from the pharmaceutical industry. This is mostly due to the several well-known advantageous technical features of these processes, as well as to other increasingly important subjects for the pharmaceutical industry, namely their "green", sustainable, safe and "environmentally-friendly" intrinsic characteristics. In this work, it is presented a comprehensive state-of-the-art review on scCO2-based processes focused on the formation and on the control of the physicochemical, structural and morphological properties of amorphous/crystalline pure drug nanoparticles. It is presented and discussed the most relevant scCO2, scCO2-based fluids and drug physicochemical properties that are pertinent for the development of successful pharmaceutical products, namely those that are critical in the selection of an adequate scCO2-based method to produce pure drug nanoparticles/nanocrystals. scCO2-based nanoparticle formation methodologies are classified in three main families, and in terms of the most important role played by scCO2 in particle formation processes: as a solvent; as an antisolvent or a co-antisolvent; and as a "high mobility" additive (a solute, a co-solute, or a co-solvent). Specific particle formation methods belonging to each one of these families are presented, discussed and compared. Some selected amorphous/crystalline drug nanoparticles that were prepared by these methods are compiled and presented, namely those studied in the last 10-15 years. A special emphasis is given to the formation of drug cocrystals. It is also discussed the fundamental knowledge and the main mechanisms in which the scCO2-based particle formation methods rely on, as well as the current status and urgent needs in terms of reliable experimental data and of robust modeling approaches. Other addressed and discussed topics include the currently available and the most adequate physicochemical, morphological and biological characterization methods required for pure drug nanoparticles/nanocrystals, some of the current nanometrology and regulatory issues associated to the use of these methods, as well as some scale-up, post-processing and pharmaceutical regulatory subjects related to the industrial implementation of these scCO2-based processes. Finally, it is also discussed the current status of these techniques, as well as their future major perspectives and opportunities for industrial implementation in the upcoming years.
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Production of copper loaded lipid microparticles by PGSS ® (particles from gas satured solutions) process. J Supercrit Fluids 2018. [DOI: 10.1016/j.supflu.2017.09.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Yang J, Ciftci ON. Encapsulation of fish oil into hollow solid lipid micro- and nanoparticles using carbon dioxide. Food Chem 2017; 231:105-113. [DOI: 10.1016/j.foodchem.2017.03.109] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2016] [Revised: 03/04/2017] [Accepted: 03/21/2017] [Indexed: 11/27/2022]
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Couto R, Alvarez V, Temelli F. Encapsulation of Vitamin B2 in solid lipid nanoparticles using supercritical CO 2. J Supercrit Fluids 2017. [DOI: 10.1016/j.supflu.2016.05.036] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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16
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Development of free-flowing peppermint essential oil-loaded hollow solid lipid micro- and nanoparticles via atomization with carbon dioxide. Food Res Int 2016; 87:83-91. [DOI: 10.1016/j.foodres.2016.06.022] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Revised: 06/26/2016] [Accepted: 06/28/2016] [Indexed: 11/22/2022]
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Potential advantages of a novel chitosan-N-acetylcysteine surface modified nanostructured lipid carrier on the performance of ophthalmic delivery of curcumin. Sci Rep 2016; 6:28796. [PMID: 27350323 PMCID: PMC4923878 DOI: 10.1038/srep28796] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Accepted: 06/06/2016] [Indexed: 12/30/2022] Open
Abstract
The transient precorneal retention time and low penetration capacity into intraocular tissues are the key obstacles that hinder the ophthalmic drug delivery of many therapeutic compounds, especially for drugs with poor solubility and permeability. To break the stalemate, N-acetyl-L-cysteine functionalized chitosan copolymer (CS-NAC), which exhibit marked bioadhesion and permeation enhancing effect, was synthesized. The curcumin encapsulated NLC (CUR-NLC) was produced and optimized followed by surface absorption of CS-NAC. After coating, changed particle size from 50.76 ± 2.21 nm to 88.64 ± 1.25 nm and reversed zeta potential from −20.38 ± 0.39 mV to 22.51 ± 0.34 mV was observed. The in vitro CUR release from NLC was slower than that of CUR-NLC and chitosan hydrochlorides (CH) coated NLC due to the inter and/or intramolecular disulfide formation of thiomers on the surface of nanocarriers. The modification also significantly enhanced transcorneal penetration compared with CH-NLC and the uncoated ones. The effect on bioadhesion and precorneal retention were evaluated by in vivo imaging technique and ocular pharmacokinetics studies revealing that the clearance of the formulations was significantly delayed in the presence of CS-NAC and the effect was positively related to the degree of thiolation. In summary, CS-NAC-NLC presented a series of notable advantages for ophthalmic drug application.
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Yang J, Ciftci ON. Formation of hollow solid lipid micro- and nanoparticles using supercritical carbon dioxide. FOOD AND BIOPRODUCTS PROCESSING 2016. [DOI: 10.1016/j.fbp.2016.01.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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19
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Prosapio V, Reverchon E, De Marco I. Coprecipitation of Polyvinylpyrrolidone/β-Carotene by Supercritical Antisolvent Processing. Ind Eng Chem Res 2015. [DOI: 10.1021/acs.iecr.5b03504] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Valentina Prosapio
- Department
of Industrial
Engineering, University of Salerno, Via Giovanni Paolo II, 132, 84084, Fisciano (SA), ITALY
| | - Ernesto Reverchon
- Department
of Industrial
Engineering, University of Salerno, Via Giovanni Paolo II, 132, 84084, Fisciano (SA), ITALY
| | - Iolanda De Marco
- Department
of Industrial
Engineering, University of Salerno, Via Giovanni Paolo II, 132, 84084, Fisciano (SA), ITALY
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20
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Supercritical fluid precipitation of ketoprofen in novel structured lipid carriers for enhanced mucosal delivery – a comparison with solid lipid particles. Int J Pharm 2015; 495:302-311. [DOI: 10.1016/j.ijpharm.2015.08.026] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Revised: 08/05/2015] [Accepted: 08/08/2015] [Indexed: 11/18/2022]
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21
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Mishima K, Honjo M, Sharmin T, Ito S, Kawakami R, Kato T, Misumi M, Suetsugu T, Orii H, Kawano H, Irie K, Sano K, Mishima K, Harada T, Ouchi M. Gas-saturated solution process to obtain microcomposite particles of alpha lipoic acid/hydrogenated colza oil in supercritical carbon dioxide. Pharm Dev Technol 2015; 21:737-48. [DOI: 10.3109/10837450.2015.1049707] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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22
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Mixed solid phase model using equation of state based on hole-theory for solubility prediction of pharmaceutical compound in supercritical CO2. J Supercrit Fluids 2015. [DOI: 10.1016/j.supflu.2015.02.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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23
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Pestieau A, Krier F, Lebrun P, Brouwers A, Streel B, Evrard B. Optimization of a PGSS (particles from gas saturated solutions) process for a fenofibrate lipid-based solid dispersion formulation. Int J Pharm 2015; 485:295-305. [PMID: 25796121 DOI: 10.1016/j.ijpharm.2015.03.027] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Revised: 03/11/2015] [Accepted: 03/14/2015] [Indexed: 01/29/2023]
Abstract
The aim of this study was to develop a formulation containing fenofibrate and Gelucire(®) 50/13 (Gattefossé, France) in order to improve the oral bioavailability of the drug. Particles from gas saturated solutions (PGSS) process was chosen for investigation as a manufacturing process for producing a solid dispersion. The PGSS process was optimized according to the in vitro drug dissolution profile obtained using a biphasic dissolution test. Using a design of experiments approach, the effects of nine experimental parameters were investigated using a PGSS apparatus provided by Separex(®) (Champigneulles, France). Within the chosen experimental conditions, the screening results showed that the drug loading level, the autoclave temperature and pressure, the connection temperature and the nozzle diameter had a significant influence on the dissolution profile of fenofibrate. During the optimization step, the three most relevant parameters were optimized using a central composite design, while other factors remained fixed. In this way, we were able to identify the optimal production conditions that would deliver the highest level of fenofibrate in the organic phase at the end of the dissolution test. The closeness between the measured and the predicted optimal dissolution profiles in the organic phase demonstrated the validity of the statistical analyses.
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Affiliation(s)
- Aude Pestieau
- Laboratory of Pharmaceutical Technology and Biopharmacy, Department of Pharmacy, C.I.R.M., University of Liège, CHU, Tour 4, 2nd floor, 4000 Liège, Belgium.
| | - Fabrice Krier
- Laboratory of Pharmaceutical Technology and Biopharmacy, Department of Pharmacy, C.I.R.M., University of Liège, CHU, Tour 4, 2nd floor, 4000 Liège, Belgium
| | | | - Adeline Brouwers
- Galéphar Research Center M/F, rue du Parc Industriel 39, 6900 Marche-en-Famenne, Belgium
| | - Bruno Streel
- Galéphar Research Center M/F, rue du Parc Industriel 39, 6900 Marche-en-Famenne, Belgium
| | - Brigitte Evrard
- Laboratory of Pharmaceutical Technology and Biopharmacy, Department of Pharmacy, C.I.R.M., University of Liège, CHU, Tour 4, 2nd floor, 4000 Liège, Belgium
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24
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Scalia S, Young PM, Traini D. Solid lipid microparticles as an approach to drug delivery. Expert Opin Drug Deliv 2014; 12:583-99. [DOI: 10.1517/17425247.2015.980812] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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25
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Santo IE, Pedro AS, Fialho R, Cabral-Albuquerque E. Characteristics of lipid micro- and nanoparticles based on supercritical formation for potential pharmaceutical application. NANOSCALE RESEARCH LETTERS 2013; 8:386. [PMID: 24034341 PMCID: PMC3832687 DOI: 10.1186/1556-276x-8-386] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/09/2013] [Accepted: 08/02/2013] [Indexed: 06/02/2023]
Abstract
The interest of the pharmaceutical industry in lipid drug delivery systems due to their prolonged release profile, biocompatibility, reduction of side effects, and so on is already known. However, conventional methods of preparation of these structures for their use and production in the pharmaceutical industry are difficult since these methods are usually multi-step and involve high amount of organic solvent. Furthermore, some processes need extreme conditions, which can lead to an increase of heterogeneity of particle size and degradation of the drug. An alternative for drug delivery system production is the utilization of supercritical fluid technique. Lipid particles produced by supercritical fluid have shown different physicochemical properties in comparison to lipid particles produced by classical methods. Such particles have shown more physical stability and narrower size distribution. So, in this paper, a critical overview of supercritical fluid-based processes for the production of lipid micro- and nanoparticles is given and the most important characteristics of each process are highlighted.
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Affiliation(s)
- Islane Espírito Santo
- PEI (Programa de Engenharia Industrial) - Escola Politécnica, Universidade Federal da Bahia, Rua Prof. Aristides Novis, 02, Federação, Salvador, Bahia 40210-630, Brazil
| | - André São Pedro
- PEI (Programa de Engenharia Industrial) - Escola Politécnica, Universidade Federal da Bahia, Rua Prof. Aristides Novis, 02, Federação, Salvador, Bahia 40210-630, Brazil
| | - Rosana Fialho
- PEI (Programa de Engenharia Industrial) - Escola Politécnica, Universidade Federal da Bahia, Rua Prof. Aristides Novis, 02, Federação, Salvador, Bahia 40210-630, Brazil
| | - Elaine Cabral-Albuquerque
- PEI (Programa de Engenharia Industrial) - Escola Politécnica, Universidade Federal da Bahia, Rua Prof. Aristides Novis, 02, Federação, Salvador, Bahia 40210-630, Brazil
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26
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Varona S, Martín Á, Cocero MJ, Duarte CMM. Encapsulation of Lavandin Essential Oil in Poly-(ϵ-caprolactones) by PGSS Process. Chem Eng Technol 2013. [DOI: 10.1002/ceat.201200592] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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27
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Domingo C, Saurina J. An overview of the analytical characterization of nanostructured drug delivery systems: towards green and sustainable pharmaceuticals: a review. Anal Chim Acta 2012; 744:8-22. [PMID: 22935368 DOI: 10.1016/j.aca.2012.07.010] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2012] [Revised: 07/06/2012] [Accepted: 07/09/2012] [Indexed: 10/28/2022]
Abstract
The analytical characterization of drug delivery systems prepared by means of green manufacturing technologies using CO(2) as a processing fluid is here reviewed. The assessment of the performance of nanopharmaceuticals designed for controlled drug release may result in a complex analytical issue and multidisciplinary studies focused on the evaluation of physicochemical, morphological and textural properties of the products may be required. The determination of the drug content as well as the detection of impurities and solvent residues are often carried out by chromatography. Assays on solid state samples relying on X-ray, vibrational and nuclear magnetic resonance spectroscopies are of great interests to study the composition and structure of pharmaceutical forms. The morphology and size of particles are commonly checked by microscopy and complementary chemical information can be extracted in combination with spectroscopic accessories. Regarding the thermal behavior, calorimetric and thermogravimetric techniques are applied to assess the thermal transitions and stability of the samples. The evaluation of drug release profiles from the nanopharmaceuticals can be based on various experimental set-ups depending on the administration route to be considered. Kinetic curves showing the evolution of the drug concentration as a function of time in various physiological conditions (e.g., gastric, plasmatic or topical) are recorded commonly by UV-vis spectroscopy and/or chromatography. Representative examples are commented in detail to illustrate the characterization strategies.
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Affiliation(s)
- Concepción Domingo
- Instituto de Ciencia de Materiales de Barcelona (CSIC), Campus de la UAB s/n, 08193 Bellaterra, Spain
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28
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CO2-assisted high pressure homogenization: a solvent-free process for polymeric microspheres and drug-polymer composites. Int J Pharm 2012; 436:394-402. [PMID: 22750408 DOI: 10.1016/j.ijpharm.2012.06.048] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2012] [Revised: 06/20/2012] [Accepted: 06/22/2012] [Indexed: 11/20/2022]
Abstract
The study explores the enabling role of near-critical CO(2) as a reversible plasticizer in the high pressure homogenization of polymer particles, aiming at their comminution as well as at the formation of drug-polymer composites. First, the effect of near-critical CO(2) on the homogenization of aqueous suspensions of poly lactic-co-glycolic acid (PLGA) was investigated. Applying a pressure drop of 900 bar and up to 150 passes across the homogenizer, it was found that particles processed in the presence of CO(2) were generally of microspherical morphology and at all times significantly smaller than those obtained in the absence of a plasticizer. The smallest particles, exhibiting a median x(50) of 1.3 μm, were obtained by adding a small quantity of ethyl acetate, which exerts on PLGA an additional plasticizing effect during the homogenization step. Further, the study concerns the possibility of forming drug-polymer composites through simultaneous high pressure homogenization of the two relevant solids, and particularly the effect of near-critical CO(2) on this process. Therefore, PLGA was homogenized together with crystalline S-ketoprofen (S-KET), a non-steroidal anti-inflammatory drug, at a drug to polymer ratio of 1:10, a pressure drop of 900 bar and up to 150 passes across the homogenizer. When the process was carried out in the presence of CO(2), an impregnation efficiency of 91% has been reached, corresponding to 8.3 wt.% of S-KET in PLGA; moreover, composite particles were of microspherical morphology and significantly smaller than those obtained in the absence of CO(2). The formation of drug-polymer composites through simultaneous homogenization of the two materials is thus greatly enhanced by the presence of CO(2), which increases the efficiency for both homogenization and impregnation.
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29
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De Zordi N, Kikic I, Moneghini M, Solinas D. Solubility of pharmaceutical compounds in supercritical carbon dioxide. J Supercrit Fluids 2012. [DOI: 10.1016/j.supflu.2011.09.018] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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30
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García-González C, Uy J, Alnaief M, Smirnova I. Preparation of tailor-made starch-based aerogel microspheres by the emulsion-gelation method. Carbohydr Polym 2012. [DOI: 10.1016/j.carbpol.2012.02.023] [Citation(s) in RCA: 120] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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31
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de Paz E, Martín Á, Duarte CM, Cocero MJ. Formulation of β-carotene with poly-(ε-caprolactones) by PGSS process. POWDER TECHNOL 2012. [DOI: 10.1016/j.powtec.2011.10.011] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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32
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Supercritical fluid-mediated methods to encapsulate drugs: recent advances and new opportunities. Ther Deliv 2011; 2:1551-65. [DOI: 10.4155/tde.11.125] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
With the advent of the development of novel pharmaceutical products and therapies, there is a need for effective delivery of these products to patients. Dependent on whether they are small-molecular weight drugs or biologics, many new compounds may suffer from poor solubility, poor stability or require frequent administration and therefore require optimized delivery. For example, the utilization of polymorphism and the enhanced solubility in the amorphous state is being exploited to improve the dissolution of small-molecular weight poorly soluble drugs. This can be achieved by the formation of solid dispersions in water-soluble matrices. In addition, encapsulation in biodegradable polymeric materials is one potential route to reduce the frequency of administration through the formation of sustained-release formulations. This is desirable for biologics, for example, which generally require administration once or twice daily. Supercritical fluid processing can achieve both of these outcomes, and this review focuses on the use of supercritical CO2 to encapsulate active pharmaceutical ingredients to enhance solubility or achieve sustained release. Using supercritical CO2-mediated processes provides a clean and potentially solvent-free route to prepare novel drug products and is therefore an attractive alternative to conventional manufacturing technologies.
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33
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Nunes AVM, Duarte CMM. Dense CO₂ as a Solute, Co-Solute or Co-Solvent in Particle Formation Processes: A Review. MATERIALS 2011; 4:2017-2041. [PMID: 28824121 PMCID: PMC5448852 DOI: 10.3390/ma4112017] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/13/2011] [Revised: 10/13/2011] [Accepted: 10/19/2011] [Indexed: 11/16/2022]
Abstract
The application of dense gases in particle formation processes has attracted great attention due to documented advantages over conventional technologies. In particular, the use of dense CO₂ in the process has been subject of many works and explored in a variety of different techniques. This article presents a review of the current available techniques in use in particle formation processes, focusing exclusively on those employing dense CO₂ as a solute, co-solute or co-solvent during the process, such as PGSS (Particles from gas-saturated solutions®), CPF (Concentrated Powder Form®), CPCSP (Continuous Powder Coating Spraying Process), CAN-BD (Carbon dioxide Assisted Nebulization with a Bubble Dryer®), SEA (Supercritical Enhanced Atomization), SAA (Supercritical Fluid-Assisted Atomization), PGSS-Drying and DELOS (Depressurization of an Expanded Liquid Organic Solution). Special emphasis is given to modifications introduced in the different techniques, as well as the limitations that have been overcome.
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Affiliation(s)
- Ana V M Nunes
- Requimte/CQFB, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Campus de Caparica, Caparica 2829-516, Portugal.
| | - Catarina M M Duarte
- Instituto de Biologia Experimental e Tecnológica (IBET), Apartado 12, Oeiras 2781-901, Portugal.
- Instituto de Tecnologia Química e Biológica, Universidade Nova de Lisboa, Avenida da Republica, Oeiras 2780-157, Portugal.
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34
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Argemí A, Domingo C, Sampaio de Sousa AR, M. Duarte CM, García‐gonzález CA, Saurina J. Characterization of new topical ketoprofen formulations prepared by drug entrapment in solid lipid matrices. J Pharm Sci 2011; 100:4783-9. [DOI: 10.1002/jps.22684] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2011] [Revised: 05/11/2011] [Accepted: 06/09/2011] [Indexed: 11/07/2022]
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35
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Lubary M, de Loos TW, ter Horst JH, Hofland GW. Production of microparticles from milk fat products using the Supercritical Melt Micronization (ScMM) process. J Supercrit Fluids 2011. [DOI: 10.1016/j.supflu.2010.10.010] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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36
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37
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38
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Encapsulation efficiency of solid lipid hybrid particles prepared using the PGSS® technique and loaded with different polarity active agents. J Supercrit Fluids 2010. [DOI: 10.1016/j.supflu.2010.05.011] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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39
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Nunes A, Almeida A, Marques S, Sousa ASD, Casimiro T, Duarte CM. Processing triacetyl-β-cyclodextrin in the liquid phase using supercritical CO2. J Supercrit Fluids 2010. [DOI: 10.1016/j.supflu.2010.05.020] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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40
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Yesil-Celiktas O, Senyay D. The Breadth and Intensity of Supercritical Particle Formation Research with an Emphasis on Publication and Patent Disclosures. Ind Eng Chem Res 2010. [DOI: 10.1021/ie100115x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ozlem Yesil-Celiktas
- Department of Bioengineering, Faculty of Engineering, Ege University, 35100 Bornova-Izmir, Turkey
| | - Deniz Senyay
- Department of Bioengineering, Faculty of Engineering, Ege University, 35100 Bornova-Izmir, Turkey
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41
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Labuschagne PW, John MJ, Sadiku RE. Investigation of the degree of homogeneity and hydrogen bonding in PEG/PVP blends prepared in supercritical CO2: Comparison with ethanol-cast blends and physical mixtures. J Supercrit Fluids 2010. [DOI: 10.1016/j.supflu.2010.03.012] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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42
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Advanced PGSS process for the encapsulation of the biopesticide Cydia pomonella granulovirus. J Supercrit Fluids 2010. [DOI: 10.1016/j.supflu.2009.12.006] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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43
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Pemsel M, Roßmann M, Schatz R, Schlücker E, Freitag D, Schwab S, Scheurer A. Verkapselung von Apfelwickler-Granuloseviren für eine nachhaltige biotechnische Schädlingsbekämpfung. CHEM-ING-TECH 2010. [DOI: 10.1002/cite.200900084] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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44
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Souto EB, Müller RH. Lipid nanoparticles: effect on bioavailability and pharmacokinetic changes. Handb Exp Pharmacol 2010:115-41. [PMID: 20217528 DOI: 10.1007/978-3-642-00477-3_4] [Citation(s) in RCA: 118] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
The main aim of pharmaceutical technology research is the design of successful formulations for effective therapy, taking into account several issues including therapeutic requirements and patient compliance. In this regard, several achievements have been reported with colloidal carriers, in particular with lipid nanoparticles, due to their unique physicochemical properties. For several years these carriers have been showing potential success for several administration routes, namely oral, dermal, parenteral, and, more recently, for pulmonary and brain targeting. The present chapter provides a review of the use of solid lipid nanoparticles (SLN) and nanostructured lipid carriers (NLC) to modify the release profile and the pharmacokinetic parameters of active pharmaceutical ingredients (APIs) incorporated in these lipid matrices, aiming to modify the API bioavailability, either upwards or downwards depending on the therapeutic requirement. Definitions of the morphological characteristics, surface properties, and polymorphic structures will also be given, emphasizing their influence on the incorporation parameters of the API, such as yield of production, loading capacity, and encapsulation efficiency.
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Affiliation(s)
- Eliana B Souto
- Faculty of Health Sciences, Fernando Pessoa University, Rua Carlos da Maia, 296, P-4200-150, Porto, Portugal.
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45
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García-González C, Sousa ASD, Argemí A, Periago AL, Saurina J, Duarte C, Domingo C. Production of hybrid lipid-based particles loaded with inorganic nanoparticles and active compounds for prolonged topical release. Int J Pharm 2009; 382:296-304. [DOI: 10.1016/j.ijpharm.2009.08.033] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2009] [Revised: 08/20/2009] [Accepted: 08/24/2009] [Indexed: 12/21/2022]
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46
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Shimoyama Y, Iwai Y. Development of activity coefficient model based on COSMO method for prediction of solubilities of solid solutes in supercritical carbon dioxide. J Supercrit Fluids 2009. [DOI: 10.1016/j.supflu.2009.06.004] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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