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Shaikh F, Patel M, Patel V, Patel A, Shinde G, Shelke S, Pathan I. Formulation and optimization of cilnidipine loaded nanosuspension for the enhancement of solubility, dissolution and bioavailability. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2021.103066] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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2
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Dahdouh A, Kati DE, Bachir-Bey M, Aksas A, Rezgui F. Deployment of response surface methodology to optimize microencapsulation of peroxidases from turnip roots (Brassica rapa L.) by double emulsion in PLA polymer. J Food Sci 2021; 86:1893-1906. [PMID: 33895995 DOI: 10.1111/1750-3841.15721] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 03/05/2021] [Accepted: 03/13/2021] [Indexed: 11/27/2022]
Abstract
In order to improve the preservation conditions and stability of peroxidase catalytic properties, a number of immobilization techniques have been widely developed. In this context, we set as objective, the optimization of synthesis and stability of microcapsules of peroxidases (POD) from turnip using polylactic acid (PLA) polymer with the double emulsion technique. The surfactant, polymer, and peroxidase concentrations were the optimized parameters. According to the results obtained using the Box-Behnken design, the optimal parameters found were 1.55% of PVA, 55 mg/mL of peroxidases, and 30 mg/mL of PLA polymer with an encapsulation efficiency of 57.29%. The scanning electron microscopy morphological characterization of the optimized microcapsules showed a regular spherical structure. Fourier transform infrared spectroscopy identified the specific functional groups and chemical bonds before and after microencapsulation. The elaborated microcapsules were characterized by an average size of 200 µm (mainly from 150 to 500 µm) with a low residual moisture content (2.26%) and the encapsulated peroxidases showed better thermal stability. The in vitro release of peroxidases confirmed that the microcapsules have an excellent sustained release in simulated gastric digestion. Encapsulated peroxidases' storage under 25 and 4 °C displays a good residual POD activity with about 60% of initial activities during 80 days of storage, whereas free POD losses its initial activity within 15 and 30 days, respectively. The obtained results are promising for the development of effective therapeutic treatment of some intestinal troubles due to oxidative stress. PRACTICAL APPLICATION: Brassica rapa L. root is well known for its richness on peroxidases and thus presents an interesting potential for developing high added value products. In order to preserve the activity of extracted peroxidases (POD) from turnip roots, microencapsulation was optimized using a polylactic acid polymer. The encapsulated POD showed the maintenance of its activity under the effect of different storage conditions (time and temperature) and demonstrated resistance to gastric acidity. According to the obtained results, the encapsulation of peroxidases opens up medicine and pharmaceutical applications such as intestinal and colic protection against inflammations.
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Affiliation(s)
- Amel Dahdouh
- Laboratoire de Biochimie Appliquée, Faculté des Sciences de la Nature et de la Vie, Université de Bejaia, Bejaia, Algeria
| | - Djamel Edine Kati
- Laboratoire de Biochimie Appliquée, Faculté des Sciences de la Nature et de la Vie, Université de Bejaia, Bejaia, Algeria
| | - Mostapha Bachir-Bey
- Laboratoire de Biochimie Appliquée, Faculté des Sciences de la Nature et de la Vie, Université de Bejaia, Bejaia, Algeria
| | - Ali Aksas
- Laboratoire de Biotechnologies Végétales et Ethnobotanique, Faculté des Sciences de la Nature et de la Vie, Université de Bejaia, Bejaia, Algeria
| | - Farouk Rezgui
- Laboratoire des Matériaux organiques, Département de Génie des Procèdes, Faculté de Technologie, Université de Bejaia, Bejaia, Algeria
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3
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Arranz-Romera A, Hernandez M, Checa-Casalengua P, Garcia-Layana A, Molina-Martinez IT, Recalde S, Young MJ, Tucker BA, Herrero-Vanrell R, Fernandez-Robredo P, Bravo-Osuna I. A Safe GDNF and GDNF/BDNF Controlled Delivery System Improves Migration in Human Retinal Pigment Epithelial Cells and Survival in Retinal Ganglion Cells: Potential Usefulness in Degenerative Retinal Pathologies. Pharmaceuticals (Basel) 2021; 14:ph14010050. [PMID: 33440745 PMCID: PMC7827036 DOI: 10.3390/ph14010050] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 12/23/2020] [Accepted: 01/06/2021] [Indexed: 11/21/2022] Open
Abstract
We assessed the sustained delivery effect of poly (lactic-co-glycolic) acid (PLGA)/vitamin E (VitE) microspheres (MSs) loaded with glial cell-derived neurotrophic factor (GDNF) alone (GDNF-MSs) or combined with brain-derived neurotrophic factor (BDNF; GDNF/BDNF-MSs) on migration of the human adult retinal pigment epithelial cell-line-19 (ARPE-19) cells, primate choroidal endothelial (RF/6A) cells, and the survival of isolated mouse retinal ganglion cells (RGCs). The morphology of the MSs, particle size, and encapsulation efficiencies of the active substances were evaluated. In vitro release, 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) cell viability, terminal deoxynucleotidyl transferase (TdT) deoxyuridine dUTP nick-end labelling (TUNEL) apoptosis, functional wound healing migration (ARPE-19; migration), and (RF/6A; angiogenesis) assays were conducted. The safety of MS intravitreal injection was assessed using hematoxylin and eosin, neuronal nuclei (NeuN) immunolabeling, and TUNEL assays, and RGC in vitro survival was analyzed. MSs delivered GDNF and co-delivered GDNF/BDNF in a sustained manner over 77 days. The BDNF/GDNF combination increased RPE cell migration, whereas no effect was observed on RF/6A. MSs did not alter cell viability, apoptosis was absent in vitro, and RGCs survived in vitro for seven weeks. In mice, retinal toxicity and apoptosis was absent in histologic sections. This delivery strategy could be useful as a potential co-therapy in retinal degenerations and glaucoma, in line with future personalized long-term intravitreal treatment as different amounts (doses) of microparticles can be administered according to patients’ needs.
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Affiliation(s)
- Alicia Arranz-Romera
- Pharmaceutical Innovation in Ophthalmology (InnOftal), Research Group (UCM 920415), Department of Pharmaceutics and Food Technology, Faculty of Pharmacy, Complutense University, Plaza de Ramón y Cajal, s/n, 28040 Madrid, Spain; (A.A.-R.); (P.C.-C.); (I.T.M.-M.); (R.H.-V.)
| | - Maria Hernandez
- Retinal Pathologies and New Therapies Group, Experimental Ophthalmology Laboratory, Department of Ophthalmology, Clínica Universidad de Navarra, 31008 Pamplona, Spain; (A.G.-L.); (S.R.); (P.F.-R.)
- Navarra Institute for Health Research, IdiSNA, 31008 Pamplona, Spain
- Red Temática de Investigación Cooperativa Sanitaria en Enfermedades Oculares (Oftared), 31008 Pamplona, Spain
- Correspondence: (M.H.); (I.B.-O.)
| | - Patricia Checa-Casalengua
- Pharmaceutical Innovation in Ophthalmology (InnOftal), Research Group (UCM 920415), Department of Pharmaceutics and Food Technology, Faculty of Pharmacy, Complutense University, Plaza de Ramón y Cajal, s/n, 28040 Madrid, Spain; (A.A.-R.); (P.C.-C.); (I.T.M.-M.); (R.H.-V.)
| | - Alfredo Garcia-Layana
- Retinal Pathologies and New Therapies Group, Experimental Ophthalmology Laboratory, Department of Ophthalmology, Clínica Universidad de Navarra, 31008 Pamplona, Spain; (A.G.-L.); (S.R.); (P.F.-R.)
- Navarra Institute for Health Research, IdiSNA, 31008 Pamplona, Spain
- Red Temática de Investigación Cooperativa Sanitaria en Enfermedades Oculares (Oftared), 31008 Pamplona, Spain
| | - Irene T. Molina-Martinez
- Pharmaceutical Innovation in Ophthalmology (InnOftal), Research Group (UCM 920415), Department of Pharmaceutics and Food Technology, Faculty of Pharmacy, Complutense University, Plaza de Ramón y Cajal, s/n, 28040 Madrid, Spain; (A.A.-R.); (P.C.-C.); (I.T.M.-M.); (R.H.-V.)
- Red Temática de Investigación Cooperativa Sanitaria en Enfermedades Oculares (Oftared), 31008 Pamplona, Spain
- Instituto Universitario de Farmacia Industrial (IUFI), Faculty of Pharmacy, Complutense University, 28040 Madrid, Spain
- Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Plaza de Ramón y Cajal, s/n, 28040 Madrid, Spain
| | - Sergio Recalde
- Retinal Pathologies and New Therapies Group, Experimental Ophthalmology Laboratory, Department of Ophthalmology, Clínica Universidad de Navarra, 31008 Pamplona, Spain; (A.G.-L.); (S.R.); (P.F.-R.)
- Navarra Institute for Health Research, IdiSNA, 31008 Pamplona, Spain
- Red Temática de Investigación Cooperativa Sanitaria en Enfermedades Oculares (Oftared), 31008 Pamplona, Spain
| | - Michael J. Young
- Department of Ophthalmology, Schepens Eye Research Institute, Harvard Medical School, Harvard University, 20 Staniford Street, Boston, MA 02114, USA;
| | - Budd A. Tucker
- Institute for Vision Research, Department of Ophthalmology and Visual Sciences, University of Iowa, Iowa City, IA 52242, USA;
| | - Rocío Herrero-Vanrell
- Pharmaceutical Innovation in Ophthalmology (InnOftal), Research Group (UCM 920415), Department of Pharmaceutics and Food Technology, Faculty of Pharmacy, Complutense University, Plaza de Ramón y Cajal, s/n, 28040 Madrid, Spain; (A.A.-R.); (P.C.-C.); (I.T.M.-M.); (R.H.-V.)
- Red Temática de Investigación Cooperativa Sanitaria en Enfermedades Oculares (Oftared), 31008 Pamplona, Spain
- Instituto Universitario de Farmacia Industrial (IUFI), Faculty of Pharmacy, Complutense University, 28040 Madrid, Spain
- Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Plaza de Ramón y Cajal, s/n, 28040 Madrid, Spain
| | - Patricia Fernandez-Robredo
- Retinal Pathologies and New Therapies Group, Experimental Ophthalmology Laboratory, Department of Ophthalmology, Clínica Universidad de Navarra, 31008 Pamplona, Spain; (A.G.-L.); (S.R.); (P.F.-R.)
- Navarra Institute for Health Research, IdiSNA, 31008 Pamplona, Spain
- Red Temática de Investigación Cooperativa Sanitaria en Enfermedades Oculares (Oftared), 31008 Pamplona, Spain
| | - Irene Bravo-Osuna
- Pharmaceutical Innovation in Ophthalmology (InnOftal), Research Group (UCM 920415), Department of Pharmaceutics and Food Technology, Faculty of Pharmacy, Complutense University, Plaza de Ramón y Cajal, s/n, 28040 Madrid, Spain; (A.A.-R.); (P.C.-C.); (I.T.M.-M.); (R.H.-V.)
- Red Temática de Investigación Cooperativa Sanitaria en Enfermedades Oculares (Oftared), 31008 Pamplona, Spain
- Instituto Universitario de Farmacia Industrial (IUFI), Faculty of Pharmacy, Complutense University, 28040 Madrid, Spain
- Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Plaza de Ramón y Cajal, s/n, 28040 Madrid, Spain
- Correspondence: (M.H.); (I.B.-O.)
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Alanezi AA, Neau SH, D’mello AP. Development and Application of a Modified Method to Determine the Encapsulation Efficiency of Proteins in Polymer Matrices. AAPS PharmSciTech 2020; 21:248. [PMID: 32875475 DOI: 10.1208/s12249-020-01789-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Accepted: 08/17/2020] [Indexed: 12/21/2022] Open
Abstract
A modified method to determine protein encapsulation efficiency in polymer matrices has been developed and applied to two proteins and two polymers to demonstrate its wide range of applicability. This study was pursued due to the wide variation in reported protein encapsulation efficiency of polymer-based microcapsules, even when the protein, the polymer, and the microcapsule manufacturing method were consistent. Hemoglobin (Hb) and bovine serum albumin (BSA) were chosen as model proteins and ethylcellulose and poly(lactic-co-glycolic acid) (PLGA) as model polymers. The polymer of the microcapsule was dissolved in dichloromethane/ethanol or dichloromethane/ethyl acetate for ethylcellulose or PLGA microcapsules, respectively. Liberated proteins were simultaneously precipitated, pelleted by centrifugation, isolated by decanting the polymer solution, redissolved in 10% w/v sodium dodecyl sulfate in 0.8 N sodium hydroxide, and quantified using a modified Lowry assay. Blank microcapsules and exogenously added proteins demonstrated ≥ 93.8% recovery of proteins. The mean encapsulation efficiency of ethylcellulose or PLGA microcapsules was 52.4 or 76.9% for Hb and 86.4 or 74.7% for BSA, respectively. This demonstrates the effective use of centrifugation and the importance of an appropriate cosolvent system in the measure of encapsulation efficiency where one solvent dissolves the polymer while the other solvent quantitatively precipitates the liberated protein. It is evident that an alkaline solution of sodium dodecyl sulfate is efficient at quantitatively dissolving precipitated proteins. Remediation of problems observed with current methods and high reproducibility suggest that this modified method is generally applicable to the measure of protein encapsulation efficiency of polymer microcapsules.
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5
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Encapsulation of octenidine hydrochloride into bioresorbable polyesters for extended antimicrobial activity. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2020.109987] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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6
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Arranz-Romera A, Davis B, Bravo-Osuna I, Esteban-Pérez S, Molina-Martínez I, Shamsher E, Ravindran N, Guo L, Cordeiro M, Herrero-Vanrell R. Simultaneous co-delivery of neuroprotective drugs from multi-loaded PLGA microspheres for the treatment of glaucoma. J Control Release 2019; 297:26-38. [DOI: 10.1016/j.jconrel.2019.01.012] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Revised: 12/20/2018] [Accepted: 01/13/2019] [Indexed: 01/05/2023]
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7
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Microspheres as intraocular therapeutic tools in chronic diseases of the optic nerve and retina. Adv Drug Deliv Rev 2018; 126:127-144. [PMID: 29339146 DOI: 10.1016/j.addr.2018.01.007] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Revised: 01/04/2018] [Accepted: 01/10/2018] [Indexed: 01/09/2023]
Abstract
Pathologies affecting the optic nerve and the retina are one of the major causes of blindness. These diseases include age-related macular degeneration (AMD), diabetic retinopathy (DR) and glaucoma, among others. Also, there are genetic disorders that affect the retina causing visual impairment. The prevalence of neurodegenerative diseases of the posterior segment is increased as most of them are related with the elderly. Even with the access to different treatments, there are some challenges in managing patients suffering retinal diseases. One of them is the need for frequent interventions. Also, an unpredictable response to therapy has suggested that different pathways may be playing a role in the development of these diseases. The management of these pathologies requires the development of controlled drug delivery systems able to slow the progression of the disease without the need of frequent invasive interventions, typically related with endophthalmitis, retinal detachment, ocular hypertension, cataract, inflammation, and floaters, among other. Biodegradable microspheres are able to encapsulate low molecular weight substances and large molecules such as biotechnological products. Over the last years, a large variety of active substances has been encapsulated in microspheres with the intention of providing neuroprotection of the optic nerve and the retina. The purpose of the present review is to describe the use of microspheres in chronic neurodegenerative diseases affecting the retina and the optic nerve. The advantage of microencapsulation of low molecular weight drugs as well as therapeutic peptides and proteins to be used as neuroprotective strategy is discussed. Also, a new use of the microspheres in the development of animal models of neurodegeneration of the posterior segment is described.
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8
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Huang W, Tsui GC, Tang C, Yang M. Optimization strategy for encapsulation efficiency and size of drug loaded silica xerogel/polymer core-shell composite nanoparticles prepared by gelation-emulsion method. POLYM ENG SCI 2017. [DOI: 10.1002/pen.24609] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- W.F. Huang
- Department of Industrial and Systems Engineering; The Hong Kong Polytechnic University, Hung Hom, Kowloon; Hong Kong China
| | - Gary C.P. Tsui
- Department of Industrial and Systems Engineering; The Hong Kong Polytechnic University, Hung Hom, Kowloon; Hong Kong China
| | - C.Y. Tang
- Department of Industrial and Systems Engineering; The Hong Kong Polytechnic University, Hung Hom, Kowloon; Hong Kong China
| | - M. Yang
- Interdisciplinary Division of Biomedical Engineering; The Hong Kong Polytechnic University, Hung Hom, Kowloon; Hong Kong China
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9
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García-Caballero C, Prieto-Calvo E, Checa-Casalengua P, García-Martín E, Polo-Llorens V, García-Feijoo J, Molina-Martínez IT, Bravo-Osuna I, Herrero-Vanrell R. Six month delivery of GDNF from PLGA/vitamin E biodegradable microspheres after intravitreal injection in rabbits. Eur J Pharm Sci 2017; 103:19-26. [DOI: 10.1016/j.ejps.2017.02.037] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Revised: 02/24/2017] [Accepted: 02/27/2017] [Indexed: 01/05/2023]
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10
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Li J, Zhu Y, Teng C, Xiong K, Yang R, Li X. The effects of biomacromolecules on the physical stability of W/O/W emulsions. Journal of Food Science and Technology 2017; 54:469-480. [PMID: 28242946 DOI: 10.1007/s13197-017-2488-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 07/21/2016] [Accepted: 01/05/2017] [Indexed: 10/20/2022]
Abstract
The effect of bovine serum albumin (BSA), whey protein isolate (WPI), whey protein hydrolysate (WPH), sodium caseinate (SC), carboxymethylcellulose sodium (CMC), fish gelatin (FG), high methoxyl apple pectin (HMAP), low methoxyl apple pectin (LMAP), gum Arabic (GA), ι-carrageenan (CGN), and hydroxypropyl chitosan (HPCTS) on physical stability of internal or external aqueous phase of water-in-oil-in-water (W/O/W) emulsions was evaluated. WPI and CGN in the internal aqueous phase, and GA, HPCTS, and CMC in the external phase reduced the size of emulsion droplets. BSA, WPI, SC, FG, CGN, and HPCTS improved the dilution stability of W/O/W emulsions, but HMAP had a negative effect. BSA, WPI, SC, FG, LMAP, GA, CGN, HPCTS, or CMC significantly improved the thermal stability of W/O/W emulsions. Results also indicated that the addition of CGN (1.0%), HMAP (1.0%), WPH (1.0%), or HPCTS (1.0%) in internal aqueous phase significantly increased the viscosity of emulsions, however, addition to the external aqueous phase had insignificant effects. A protein-knockout experiment confirmed that proteins as biomacromolecules, were the key factor in improving physical stability of emulsions.
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Affiliation(s)
- Jinlong Li
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University (BTBU), Beijing, 100048 People's Republic of China.,Beijing Higher Institution Engineering Research Center of Food Additives and Ingredients, Beijing, 100048 People's Republic of China
| | - Yunping Zhu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University (BTBU), Beijing, 100048 People's Republic of China.,Beijing Higher Institution Engineering Research Center of Food Additives and Ingredients, Beijing, 100048 People's Republic of China
| | - Chao Teng
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University (BTBU), Beijing, 100048 People's Republic of China.,Beijing Key Laboratory of Flavor Chemistry, Beijing, 100048 People's Republic of China
| | - Ke Xiong
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University (BTBU), Beijing, 100048 People's Republic of China.,Beijing Key Laboratory of Flavor Chemistry, Beijing, 100048 People's Republic of China
| | - Ran Yang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University (BTBU), Beijing, 100048 People's Republic of China.,Beijing Key Laboratory of Flavor Chemistry, Beijing, 100048 People's Republic of China
| | - Xiuting Li
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University (BTBU), Beijing, 100048 People's Republic of China.,Beijing Higher Institution Engineering Research Center of Food Additives and Ingredients, Beijing, 100048 People's Republic of China
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11
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Levet A, Bordes C, Clément Y, Mignon P, Chermette H, Forquet V, Morell C, Lantéri P. Solvent database and in silico classification: A new methodology for solvent substitution and its application for microencapsulation process. Int J Pharm 2016; 509:454-464. [DOI: 10.1016/j.ijpharm.2016.05.053] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Revised: 05/24/2016] [Accepted: 05/26/2016] [Indexed: 10/21/2022]
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12
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Li J, Shi Y, Zhu Y, Teng C, Li X. Effects of Several Natural Macromolecules on the Stability and Controlled Release Properties of Water-in-Oil-in-Water Emulsions. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:3873-3880. [PMID: 27137850 DOI: 10.1021/acs.jafc.6b00956] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Water-in-oil-in-water (W/O/W) emulsions are effective vehicles for embedding application of active compounds but limited by their thermodynamic instability and rapid release properties. The present study added bovine serum albumin, whey protein isolate, whey protein hydrolysate, sodium caseinate, carboxymethylcellulose sodium, fish gelatin, apple pectin, gum arabic, ι-carrageenan, and hydroxypropyl chitosan separately to the internal or external aqueous phase to investigate their effects on the physical stabilities and controlled release properties of W/O/W emulsions. The effects of the natural macromolecules in the internal and external aqueous phases were different and depended upon the macromolecule structure and its mass fraction. The addition of the natural macromolecule strengthened the interfaces of emulsions, which improved the physical stability. The natural macromolecules that improved the stability often did not improve controlled release. Therefore, the balance between these properties needs to be considered when adding natural macromolecules to a W/O/W emulsion.
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Affiliation(s)
- Jinlong Li
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University , Beijing 100048, People's Republic of China
- Beijing Higher Institution Engineering Research Center of Food Additives and Ingredients , Beijing 100048, People's Republic of China
| | - Yiheng Shi
- College of Food Science and Engineering, Northwest Agricultural and Forestry University , Yangling, Shanxi 712100, People's Republic of China
| | - Yunping Zhu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University , Beijing 100048, People's Republic of China
- Beijing Key Laboratory of Flavor Chemistry , Beijing 100048, People's Republic of China
| | - Chao Teng
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University , Beijing 100048, People's Republic of China
- Beijing Higher Institution Engineering Research Center of Food Additives and Ingredients , Beijing 100048, People's Republic of China
| | - Xiuting Li
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University , Beijing 100048, People's Republic of China
- Beijing Key Laboratory of Flavor Chemistry , Beijing 100048, People's Republic of China
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13
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Biodegradable microparticles preparation by double emulsification—Solvent extraction method: A Systematic study. Colloids Surf A Physicochem Eng Asp 2016. [DOI: 10.1016/j.colsurfa.2015.11.067] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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14
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The impact of preparation parameters on sustained release aceclofenac microspheres: A design of experiments. ADV POWDER TECHNOL 2015. [DOI: 10.1016/j.apt.2014.10.004] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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15
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Deshmukh RK, Naik JB. Optimization of sustained release aceclofenac microspheres using response surface methodology. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 48:197-204. [PMID: 25579914 DOI: 10.1016/j.msec.2014.12.008] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2014] [Revised: 10/13/2014] [Accepted: 12/04/2014] [Indexed: 01/28/2023]
Abstract
Polymeric microspheres containing aceclofenac were prepared by single emulsion (oil-in-water) solvent evaporation method using response surface methodology (RSM). Microspheres were prepared by changing formulation variables such as the amount of Eudragit® RS100 and the amount of polyvinyl alcohol (PVA) by statistical experimental design in order to enhance the encapsulation efficiency (E.E.) of the microspheres. The resultant microspheres were evaluated for their size, morphology, E.E., and in vitro drug release. The amount of Eudragit® RS100 and the amount of PVA were found to be significant factors respectively for determining the E.E. of the microspheres. A linear mathematical model equation fitted to the data was used to predict the E.E. in the optimal region. Optimized formulation of microspheres was prepared using optimal process variables setting in order to evaluate the optimization capability of the models generated according to IV-optimal design. The microspheres showed high E.E. (74.14±0.015% to 85.34±0.011%) and suitably sustained drug release (minimum; 40% to 60%; maximum) over a period of 12h. The optimized microspheres formulation showed E.E. of 84.87±0.005 with small error value (1.39). The low magnitudes of error and the significant value of R(2) in the present investigation prove the high prognostic ability of the design. The absence of interactions between drug and polymers was confirmed by Fourier transform infrared (FTIR) spectroscopy. Differential scanning calorimetry (DSC) and X-ray powder diffractometry (XRPD) revealed the dispersion of drug within microspheres formulation. The microspheres were found to be discrete, spherical with smooth surface. The results demonstrate that these microspheres could be promising delivery system to sustain the drug release and improve the E.E. thus prolong drug action and achieve the highest healing effect with minimal gastrointestinal side effects.
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Affiliation(s)
- Rameshwar K Deshmukh
- Department of Pharmaceutical Technology, University Institute of Chemical Technology, North Maharashtra University, Jalgaon, 425 001 Maharashtra, India
| | - Jitendra B Naik
- Department of Pharmaceutical Technology, University Institute of Chemical Technology, North Maharashtra University, Jalgaon, 425 001 Maharashtra, India.
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16
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Microfluidics-assisted engineering of polymeric microcapsules with high encapsulation efficiency for protein drug delivery. Int J Pharm 2014; 472:82-7. [DOI: 10.1016/j.ijpharm.2014.06.012] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Revised: 06/06/2014] [Accepted: 06/08/2014] [Indexed: 11/19/2022]
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17
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Encapsulation of immunoglobulin G by solid-in-oil-in-water: Effect of process parameters on microsphere properties. Eur J Pharm Biopharm 2014; 86:393-403. [DOI: 10.1016/j.ejpb.2013.10.013] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2013] [Revised: 10/07/2013] [Accepted: 10/22/2013] [Indexed: 11/19/2022]
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18
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Qi F, Wu J, Fan Q, He F, Tian G, Yang T, Ma G, Su Z. Preparation of uniform-sized exenatide-loaded PLGA microspheres as long-effective release system with high encapsulation efficiency and bio-stability. Colloids Surf B Biointerfaces 2013; 112:492-8. [DOI: 10.1016/j.colsurfb.2013.08.048] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2013] [Revised: 08/21/2013] [Accepted: 08/29/2013] [Indexed: 10/26/2022]
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19
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Deshmukh RK, Naik JB. Diclofenac Sodium-Loaded Eudragit® Microspheres: Optimization Using Statistical Experimental Design. J Pharm Innov 2013. [DOI: 10.1007/s12247-013-9167-9] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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20
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Kenari HS, Alinejad Z, Imani M, Nodehi A. Effective parameters in determining cross-linked dextran microsphere characteristics: screening by Plackett–Burman design-of-experiments. J Microencapsul 2013; 30:599-611. [DOI: 10.3109/02652048.2013.770096] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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21
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Checa-Casalengua P, Jiang C, Bravo-Osuna I, Tucker BA, Molina-Martínez IT, Young MJ, Herrero-Vanrell R. Preservation of biological activity of glial cell line-derived neurotrophic factor (GDNF) after microencapsulation and sterilization by gamma irradiation. Int J Pharm 2012; 436:545-54. [PMID: 22828071 DOI: 10.1016/j.ijpharm.2012.07.019] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2012] [Revised: 07/10/2012] [Accepted: 07/12/2012] [Indexed: 11/25/2022]
Abstract
A main issue in controlled delivery of biotechnological products from injectable biodegradable microspheres is to preserve their integrity and functional activity after the microencapsulation process and final sterilization. The present experimental work tested different technological approaches to maintain the biological activity of an encapsulated biotechnological product within PLGA [poly (lactic-co-glycolic acid)] microspheres (MS) after their sterilization by gamma irradiation. GDNF (glial cell line-derived neurotrophic factor), useful in the treatment of several neurodegenerative diseases, was chosen as a labile model protein. In the particular case of optic nerve degeneration, GDNF has been demonstrated to improve the damaged retinal ganglion cells (RGC) survival. GDNF was encapsulated in its molecular state by the water-in-oil-in-water (W/O/W) technique or as solid according to the solid-in-oil-in-water (S/O/W) method. Based on the S/O/W technique, GDNF was included in the PLGA microspheres alone (S/O/W 1) or in combination with an antioxidant (vitamin E, Vit E) (S/O/W 2). Microspheres were sterilized by gamma-irradiation (dose of 25 kGy) at room and low (-78 °C) temperatures. Functional activity of GDNF released from the different microspheres was evaluated both before and after sterilization in their potential target cells (retinal cells). Although none of the systems proposed achieved with the goal of totally retain the structural stability of the GDNF-dimer, the protein released from the S/O/W 2 microspheres was clearly the most biologically active, showing significantly less retinal cell death than that released from either W/O/W or S/O/W 1 particles, even in low amounts of the neurotrophic factor. According to the results presented in this work, the biological activity of biotechnological products after microencapsulation and sterilization can be further preserved by the inclusion of the active molecule in its solid state in combination with antioxidants and using low temperature (-78 °C) during gamma irradiation exposure.
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Affiliation(s)
- P Checa-Casalengua
- Dep. of Pharmacy and Pharmaceutical Technology, School of Pharmacy, Avd. Complutense s/n, Complutense University, Madrid 28040, Spain
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22
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Saez V, Ramón J, Peniche C, Hardy E. Microencapsulation of Alpha Interferons in Biodegradable Microspheres. J Interferon Cytokine Res 2012; 32:299-311. [DOI: 10.1089/jir.2011.0034] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Vivian Saez
- Formulation Development Department, Center for Genetic Engineering and Biotechnology, Havana, Cuba
| | - José Ramón
- Macromolecular Chemistry Department, Biomaterials Center (BIOMAT), Havana University. Havana, Cuba
| | - Carlos Peniche
- Macromolecular Chemistry Department, Biomaterials Center (BIOMAT), Havana University. Havana, Cuba
| | - Eugenio Hardy
- Institute for Science and Technology of Materials, Havana University, Havana, Cuba
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23
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Checa-Casalengua P, Jiang C, Bravo-Osuna I, Tucker BA, Molina-Martínez IT, Young MJ, Herrero-Vanrell R. Retinal ganglion cells survival in a glaucoma model by GDNF/Vit E PLGA microspheres prepared according to a novel microencapsulation procedure. J Control Release 2011; 156:92-100. [DOI: 10.1016/j.jconrel.2011.06.023] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2011] [Revised: 06/05/2011] [Accepted: 06/10/2011] [Indexed: 10/18/2022]
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24
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Integrity characterization of myoglobin released from poly(ε-caprolactone) microspheres using two analytical methods: UV/Vis spectrometry and conductometric bi-enzymatic biosensor. Eur J Pharm Biopharm 2011; 78:298-305. [DOI: 10.1016/j.ejpb.2011.01.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2010] [Revised: 12/17/2010] [Accepted: 01/25/2011] [Indexed: 11/21/2022]
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25
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26
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Mestres J, Duracher L, Baux C, Vian L, Marti-Mestres G. Benzophenone-3 entrapped in solid lipid microspheres: Formulation and in vitro skin evaluation. Int J Pharm 2010; 400:1-7. [DOI: 10.1016/j.ijpharm.2010.07.028] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2009] [Revised: 06/03/2010] [Accepted: 07/19/2010] [Indexed: 11/16/2022]
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27
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Rajapaksa TE, Bennett KM, Hamer M, Lytle C, Rodgers VGJ, Lo DD. Intranasal M cell uptake of nanoparticles is independently influenced by targeting ligands and buffer ionic strength. J Biol Chem 2010; 285:23739-46. [PMID: 20511224 PMCID: PMC2911333 DOI: 10.1074/jbc.m110.126359] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
In mucosal tissues, epithelial M cells capture and transport microbes across the barrier to underlying immune cells. Previous studies suggested that high affinity ligands targeting M cells may be used to deliver mucosal vaccines; here, we show that particle composition and dispersion buffer ionic strength can independently influence their uptake in vivo. First, addition of a poloxamer 188 to nanoparticle formulations increased uptake of intranasally administered nanoparticles in vivo, but the effect was dependent on the presence of the M cell-targeting ligand. Second, solvent ionic strength is known to effect electrostatic interactions; accordingly, reduced ionic strength increased the electrostatic potential between the epithelium and the particles. Interestingly, below a critical ionic strength, intranasal particle uptake in vivo significantly was increased even when controlled for osmolarity. Similar results were obtained for uptake of bacterial particles. Surprisingly, at low ionic strength, the specific enhancement effect by the targeting peptide was negligible. Modeling of the electrostatic forces predicted that the enhancing effects of the M cell-targeting ligand only are enabled at high ionic strength, as particle electrostatic forces are reduced through Debye screening. Thus, electrostatic forces can have a dramatic effect on the in vivo M cell particle uptake independent of the action of targeting ligands. Examination of these forces will be helpful to optimizing mucosal vaccine and drug delivery.
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Affiliation(s)
- Thejani E Rajapaksa
- Division of Biomedical Sciences, University of California, Riverside, CA 92521, USA
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28
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Haushey LA, Bolzinger MA, Fessi H, Briançon S. rhEGF microsphere formulation andin vitroskin evaluation. J Microencapsul 2010; 27:14-24. [DOI: 10.3109/02652040902749061] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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29
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Rajapaksa TE, Stover-Hamer M, Fernandez X, Eckelhoefer HA, Lo DD. Claudin 4-targeted protein incorporated into PLGA nanoparticles can mediate M cell targeted delivery. J Control Release 2009; 142:196-205. [PMID: 19896996 DOI: 10.1016/j.jconrel.2009.10.033] [Citation(s) in RCA: 95] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2009] [Revised: 10/26/2009] [Accepted: 10/31/2009] [Indexed: 01/20/2023]
Abstract
Polymer-based microparticles are in clinical use mainly for their ability to provide controlled release of peptides and compounds, but they are also being explored for their potential to deliver vaccines and drugs as suspensions directly into mucosal sites. It is generally assumed that uptake is mediated by epithelial M cells, but this is often not directly measured. To study the potential for optimizing M cell uptake of polymer microparticles in vivo, we produced sub-micron size PLGA particles incorporating a recombinant protein. This recombinant protein was produced with or without a c-terminal peptide previously shown to have high affinity binding to Claudin 4, a protein associated with M cell endocytosis. While the PLGA nanoparticles incorporate the protein throughout the matrix, much of the protein was also displayed on the surface, allowing us to take advantage of the binding activity of the targeting peptide. Accordingly, we found that instillation of these nanoparticles into the nasal passages or stomach of mice was found to significantly enhance their uptake by upper airway and intestinal M cells. Our results suggest that a reasonably simple nanoparticle manufacture method can provide insight into developing an effective needle-free delivery system.
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Affiliation(s)
- Thejani E Rajapaksa
- Division of Biomedical Sciences, University of California, Riverside, CA 92521, USA
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30
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Bordes C, Fréville V, Ruffin E, Marote P, Gauvrit JY, Briançon S, Lantéri P. Determination of poly(epsilon-caprolactone) solubility parameters: application to solvent substitution in a microencapsulation process. Int J Pharm 2009; 383:236-43. [PMID: 19781605 DOI: 10.1016/j.ijpharm.2009.09.023] [Citation(s) in RCA: 137] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2009] [Revised: 09/04/2009] [Accepted: 09/11/2009] [Indexed: 10/20/2022]
Abstract
The evolution of regulation on chemical substances (i.e. REACH regulation) calls for the progressive substitution of toxic chemicals in formulations when suitable alternatives have been identified. In this context, the method of Hansen solubility parameters was applied to identify an alternative solvent less toxic than methylene chloride used in a microencapsulation process. During the process based on a multiple emulsion (W/O/W) with solvent evaporation/extraction method, the solvent has to dissolve a polymer, poly(epsilon-caprolactone) (PCL), which forms a polymeric matrix encapsulating or entrapping a therapeutic protein as the solvent is extracted. Therefore the three partial solubility parameters of PCL have been determined by a group contribution method, swelling experiments and turbidimetric titration. The results obtained allowed us to find a solvent, anisole, able to solubilize PCL and to form a multiple emulsion with aqueous solutions. A feasibility test was conducted under standard operating conditions and allowed the production of PCL microspheres.
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Affiliation(s)
- C Bordes
- Université de Lyon, F-69622, Lyon, France.
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31
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Li BZ, Wang LJ, Li D, Bhandari B, Li SJ, Lan Y, Chen XD, Mao ZH. Fabrication of starch-based microparticles by an emulsification-crosslinking method. J FOOD ENG 2009. [DOI: 10.1016/j.jfoodeng.2008.08.011] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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32
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Brgles M, Jurašin D, Sikirić MD, Frkanec R, Tomašić J. Entrapment of Ovalbumin into Liposomes—Factors Affecting Entrapment Efficiency, Liposome Size, and Zeta Potential. J Liposome Res 2008; 18:235-48. [DOI: 10.1080/08982100802312762] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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