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Polymeric Systems for the Controlled Release of Flavonoids. Pharmaceutics 2023; 15:pharmaceutics15020628. [PMID: 36839955 PMCID: PMC9964149 DOI: 10.3390/pharmaceutics15020628] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 01/30/2023] [Accepted: 02/01/2023] [Indexed: 02/15/2023] Open
Abstract
Flavonoids are natural compounds that are attracting great interest in the biomedical field thanks to the wide spectrum of their biological properties. Their employment as anticancer, anti-inflammatory, and antidiabetic drugs, as well as for many other pharmacological applications, is extensively investigated. One of the most successful ways to increase their therapeutic efficacy is to encapsulate them into a polymeric matrix in order to control their concentration in the physiological fluids for a prolonged time. The aim of this article is to provide an updated overview of scientific literature on the polymeric systems developed so far for the controlled release of flavonoids. The different classes of flavonoids are described together with the polymers most commonly employed for drug delivery applications. Representative drug delivery systems are discussed, highlighting the most common techniques for their preparation. The flavonoids investigated for polymer system encapsulation are then presented with their main source of extraction and biological properties. Relevant literature on their employment in this context is reviewed in relationship to the targeted pharmacological and biomedical applications.
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Franco P, De Marco I. Formation of Rutin-β-Cyclodextrin Inclusion Complexes by Supercritical Antisolvent Precipitation. Polymers (Basel) 2021; 13:polym13020246. [PMID: 33450873 PMCID: PMC7828341 DOI: 10.3390/polym13020246] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 01/01/2021] [Accepted: 01/12/2021] [Indexed: 11/16/2022] Open
Abstract
In this work, rutin (RUT)–β-cyclodextrin (β-CD) inclusion complexes are prepared by Supercritical AntiSolvent (SAS) precipitation. Well-defined composite microparticles are obtained at guest:host ratios equal to 1:2 and 1:1 mol:mol. The dimensions of composite particles range between 1.45 ± 0.88 µm and 7.94 ± 2.12 µm. The formation of RUT–β-CD inclusion complexes has been proved by different analyses, including Fourier transform infrared spectroscopy, Differential Scanning Calorimetry, X-ray diffraction, and UV-vis spectroscopy. The dissolution tests reveal a significant improvement in the release rate of RUT from inclusion complexes. Indeed, compared to the unprocessed RUT, the dissolution rate is about 3.9 and 2.4 times faster in the case of the complexes RUT–β-CD 1:2 and 1:1 mol:mol, respectively. From a pharmaceutical/nutraceutical point of view, CD-based inclusion complexes allow the reduction of the polymer amount in the SAS composite formulations.
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Affiliation(s)
- Paola Franco
- 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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Sansone F, Mencherini T, Picerno P, Lauro MR, Cerrato M, Aquino RP. Development of Health Products from Natural Sources. Curr Med Chem 2019; 26:4606-4630. [PMID: 30259806 DOI: 10.2174/0929867325666180926152139] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 08/07/2018] [Accepted: 09/06/2018] [Indexed: 12/21/2022]
Abstract
BioActive Compounds (BACs) recovered from food or food by-product matrices are useful in maintaining well being, enhancing human health, and modulating immune function to prevent or to treat chronic diseases. They are also generally seen by final consumers as safe, non-toxic and environment-friendly. Despite the complex process of production, chemical characterization, and assessment of health effects, BACs must also be manufactured in stable and bioactive ingredients to be used in pharmaceutical, food and nutraceutical industry. Generally, vegetable derivatives occur as sticky raw materials with pervasive smell and displeasing flavor. Also, they show critical water solubility and dramatic stability behavior over time, involving practical difficulties for industrial use. Therefore, the development of novel functional health products from natural sources requires the design of a suitable formulation to delivery BACs at the site of action, preserve stability during processing and storage, slow down the degradation processes, mask lousy tasting or smell, and increase the bioavailability, while maintaining the BACs functionality. The present review focuses on human health benefits, BACs composition, and innovative technologies or formulation approaches of natural ingredients from some selected foods and by-products from industrial food transformations.
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Affiliation(s)
| | | | - Patrizia Picerno
- Department of Pharmacy, University of Salerno, Fisciano (SA), Italy
| | | | - Michele Cerrato
- Department of Pharmacy, University of Salerno, Fisciano (SA), Italy
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Lawsone-loaded Niosome and its antitumor activity in MCF-7 breast Cancer cell line: a Nano-herbal treatment for Cancer. ACTA ACUST UNITED AC 2018; 26:11-17. [PMID: 30159762 PMCID: PMC6154483 DOI: 10.1007/s40199-018-0207-3] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Accepted: 07/18/2018] [Indexed: 10/29/2022]
Abstract
Phytochemicals like Lawsone have some drawbacks that stem from their poor solubility. Low solubility in aqueous mediums results in low bioavailability, poor permeability and instability of phytochemical compounds in biological environments. The aim of this study was to design nanoniosomes containing Lawsone (Law) using non-ionic surfactants and cholesterol. Niosomes were prepared by thin film hydration method (TFH). Then, they were loaded with Henna extract (HLaw) and standard Lawsone (SLaw), and two resulted formulations were compared. The henna extract was analyzed by mass gas chromatography. Size, zeta potential, polydispersity index (PDI) and morphology of the loaded formulations were evaluated by dynamic light scattering (DLS) and scanning electron spectroscopy (SEM). The incorporation and release rate of Law from niosome bilayers were evaluated by UV-Vis spectroscopy. In vitro experiments were carried out to evaluate antitumor activity in MCF-7 cell line. The results showed distinct spherical shapes and particle sizes were about 250 nm in diameter and have negative zeta potentials. Niosomes were stable at 4 °C for 2 months. Entrapment efficiently of both formulations was about 70% and showed a sustained release profile. In vitro study exhibited that using of niosome to encapsulating Law can significantly increase antitumor activity of formulation in MCF-7 cell line compared to Law solution (free Law). Thus, niosomes are a promising carrier system for delivery of phytochemical compounds that have poor solubility in biological fluids. Graphical abstract ᅟ.
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Crascì L, Lauro MR, Puglisi G, Panico A. Natural antioxidant polyphenols on inflammation management: Anti-glycation activity vs metalloproteinases inhibition. Crit Rev Food Sci Nutr 2017; 58:893-904. [PMID: 27646710 DOI: 10.1080/10408398.2016.1229657] [Citation(s) in RCA: 84] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The diet polyphenols are a secondary metabolites of plants able to act on inflammation process. Their anti-inflammatory activity is articulated through several mechanisms that are related to their antioxidative and radical scavengers properties. Our work is focused on a novel approach to inflammatory disease management, based on anti-glycative and matrix metalloproteinases (MMPs) inhibition effects, as a connected phenomena. To better understand these correlation, polyphenols Structure-Activity Relationship (SAR) studies were also reported. The antioxidant polyphenols inhibit the AGEs at different levels of the glycation process in the following ways: (1) prevention of Amadori adduct oxidation; (2) trapping reactive dycarbonyl compounds; (3) attenuation of receptor for AGEs (RAGE) expression. Moreover, several flavonoids with radical scavenging property showed also MMPs inhibition interact directly with MMPs or indirectly via radical scavengers and AGEs reduction. The essential polyphenols features involved in these mechanisms are C2-C3 double bond and number and position of hydroxyl, glycosyl and O-methyl groups. These factors induce a change in molecular planarity interfering with the hydrogen bond formation, electron delocalization and metal ion chelation. In particular, C2-C3 double bond improve the antioxidant and MMPs inhibition, while the hydroxylation, glycosylation and methylation induce a positive and negative correlation, respectively.
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Affiliation(s)
- Lucia Crascì
- a Department of Drug Science , University of Catania , Viale A. Doria , Catania , Italy
| | - Maria Rosaria Lauro
- b Department of Pharmacy , University of Salerno , Via Giovanni Paolo II, Fisciano ( SA ), Italy
| | - Giovanni Puglisi
- a Department of Drug Science , University of Catania , Viale A. Doria , Catania , Italy
| | - Annamaria Panico
- a Department of Drug Science , University of Catania , Viale A. Doria , Catania , Italy
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Morelo G, Márquez‐Ruiz G, Holgado F, Giménez B, Robert P. Design of flavonoid microparticles with channel forming properties to improve oxidative stability of sunflower oil. EUR J LIPID SCI TECH 2017. [DOI: 10.1002/ejlt.201700041] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Guibeth Morelo
- Departamento de Ciencia de los Alimentos y Tecnología QuímicaFacultad de Ciencias Químicas y FarmacéuticasUniversidad de ChileSantiagoChile
| | - Gloria Márquez‐Ruiz
- Instituto de Ciencia y Tecnología de Alimentos y Nutrición (ICTAN‐CSIC)MadridSpain
| | - Francisca Holgado
- Instituto de Ciencia y Tecnología de Alimentos y Nutrición (ICTAN‐CSIC)MadridSpain
| | - Begoña Giménez
- Departamento de Ciencia y Tecnología de los AlimentosFacultad Tecnológica, Universidad de Santiago de ChileEstación CentralSantiagoChile
| | - Paz Robert
- Departamento de Ciencia de los Alimentos y Tecnología QuímicaFacultad de Ciencias Químicas y FarmacéuticasUniversidad de ChileSantiagoChile
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Gilley AD, Arca HC, Nichols BL, Mosquera-Giraldo LI, Taylor LS, Edgar KJ, Neilson AP. Novel cellulose-based amorphous solid dispersions enhance quercetin solution concentrations in vitro. Carbohydr Polym 2017; 157:86-93. [DOI: 10.1016/j.carbpol.2016.09.067] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2016] [Revised: 09/20/2016] [Accepted: 09/22/2016] [Indexed: 11/15/2022]
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Puglia C, Lauro MR, Tirendi GG, Fassari GE, Carbone C, Bonina F, Puglisi G. Modern drug delivery strategies applied to natural active compounds. Expert Opin Drug Deliv 2016; 14:755-768. [DOI: 10.1080/17425247.2017.1234452] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Carmelo Puglia
- Department of Drug Sciences, University of Catania, Catania, Italy
| | | | - Giorgia Giusy Tirendi
- Azienda Ospedaliera di Rilievo Nazionale e di Alta Specializzazione (ARNAS) Garibaldi, Catania, Italy
| | | | - Claudia Carbone
- Department of Drug Sciences, University of Catania, Catania, Italy
| | - Francesco Bonina
- Department of Drug Sciences, University of Catania, Catania, Italy
| | - Giovanni Puglisi
- Department of Drug Sciences, University of Catania, Catania, Italy
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Lauro MR, Carbone C, Sansone F, Ruozi B, Chillemi R, Sciuto S, Aquino RP, Puglisi G. Innovative oral spray-dried Idebenone systems to improve patient compliance. Drug Dev Ind Pharm 2015; 42:1127-36. [DOI: 10.3109/03639045.2015.1115870] [Citation(s) in RCA: 8] [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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10
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Lauro MR, Crasci L, Carbone C, Aquino RP, Panico AM, Puglisi G. Encapsulation of a citrus by-product extract: Development, characterization and stability studies of a nutraceutical with antioxidant and metalloproteinases inhibitory activity. Lebensm Wiss Technol 2015. [DOI: 10.1016/j.lwt.2015.01.017] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Sahiner N. One step poly(rutin) particle preparation as biocolloid and its characterization. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 44:9-16. [PMID: 25280674 DOI: 10.1016/j.msec.2014.08.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2014] [Revised: 07/02/2014] [Accepted: 08/01/2014] [Indexed: 12/22/2022]
Abstract
Poly(rutin) p(RT) particles were prepared for the first time via a simple microemulsion polymerization/crosslinking method using l-α lecithin as surfactant, cyclohexane as organic phase and glycerol diglycidyl ether (GDE) as a crosslinking agent. Highly negatively charged p(RT) particles, -48.2 mV, were obtained due to phenolic groups on the particles. It was also confirmed that p(RT) particles are thermally more stable than RT and degradable in PBS at pH7.4., e.g., 11 wt.% can degrade in 1 day and little further degradation was observed over 9 days. The prepared p(RT) particles showed insignificant antibacterial characteristics against common bacteria such as Escherichia coli ATCC8739, Staphylococcus aureus ATCC6538, and Bacillus subtilis ATCC6633 whereas the RT molecules showed significantly better antibacterial characteristics even at low concentrations. Moreover, p(RT) particles were demonstrated for use as drug delivery devices by loading rosmarinic acid (RA) as model drug and showed release capability for up to 6 days by releasing 85% of the loaded RA. Intriguingly, p(RT) particles illustrated enhanced fluorescent properties providing great potential for fluorescent active antioxidant and antibacterial materials in biomedical use.
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Affiliation(s)
- Nurettin Sahiner
- Faculty of Science & Arts, Chemistry Department, Canakkale Onsekiz Mart University, Terzioglu Campus, 17100 Canakkale, Turkey; Nanoscience and Technology Research and Application Center (NANORAC), Canakkale Onsekiz Mart University, Terzioglu Campus, 17100 Canakkale, Turkey.
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Althans D, Schrader P, Enders S. Solubilisation of quercetin: Comparison of hyperbranched polymer and hydrogel. J Mol Liq 2014. [DOI: 10.1016/j.molliq.2014.03.028] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Kerdudo A, Dingas A, Fernandez X, Faure C. Encapsulation of rutin and naringenin in multilamellar vesicles for optimum antioxidant activity. Food Chem 2014; 159:12-9. [PMID: 24767021 DOI: 10.1016/j.foodchem.2014.03.005] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2013] [Revised: 02/14/2014] [Accepted: 03/01/2014] [Indexed: 11/26/2022]
Abstract
Rutin and naringenin, two phenolic compounds with antioxidant properties were encapsulated in lipid-based onion-type multilamellar vesicles (MLVs). After vesicles formation, the free, adsorbed/encapsulated analytes were well separated with size exclusion chromatography (SEC), and rutin and naringenin were quantified with UV-HPLC at 258 nm and 290 nm. A mathematical model was developed to separately calculate the encapsulation and the adsorption yields of both phenols. Naringenin was shown to be poorly encapsulated (<10%) but highly adsorbed on MLVs surface (>60%) whatever MLVs composition. Conversely, rutin showed high encapsulation efficiency (>60%). Entrapment of rutin was proved to be efficient since no leak was observed within 30 days in concentrated MLVs phase, while 16.0±0.3% of rutin was still encapsulated after 30 days when MLVs were diluted in water. Free rutin broke up into quercetin while the encapsulated one remained stable. DPPH assay confirmed that only free and adsorbed rutin participated in antioxidant activity.
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Affiliation(s)
- Audrey Kerdudo
- S.O.F.I.A. Cosmétiques, 1ère Avenue, 1ère Rue, 06514 Carros, France; Université Nice Sophia Antipolis, ICN, UMR 7272, Parc Valrose, 06108 Nice CEDEX 2, France
| | - Alexandre Dingas
- S.O.F.I.A. Cosmétiques, 1ère Avenue, 1ère Rue, 06514 Carros, France
| | - Xavier Fernandez
- Université Nice Sophia Antipolis, ICN, UMR 7272, Parc Valrose, 06108 Nice CEDEX 2, France
| | - Chrystel Faure
- Laboratoire de Chimie et Biologie des Membranes et Nano-objets, Univ. Bordeaux, CBMN, UMR 5248, Allée Geoffroy St. Hilaire, F-33600 Pessac, France.
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Li B, Konecke S, Harich K, Wegiel L, Taylor LS, Edgar KJ. Solid dispersion of quercetin in cellulose derivative matrices influences both solubility and stability. Carbohydr Polym 2012; 92:2033-40. [PMID: 23399255 DOI: 10.1016/j.carbpol.2012.11.073] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2012] [Revised: 11/19/2012] [Accepted: 11/26/2012] [Indexed: 01/06/2023]
Abstract
Amorphous solid dispersions (ASD) of quercetin (Que) in cellulose derivative matrices, carboxymethylcellulose acetate butyrate (CMCAB), hydroxypropylmethylcellulose acetate succinate (HPMCAS), and cellulose acetate adipate propionate (CAAdP) were prepared with the goal of identifying an ASD that effectively increased Que aqueous solution concentration. Crystalline quercetin and Que/poly(vinylpyrrolidinone) (PVP) ASD were evaluated for comparison. Powder X-ray diffraction (XRPD) and differential scanning calorimetry (DSC) were used to examine the crystallinity of ASDs, physical mixtures (PM) and quercetin. ASDs were amorphous up to 50 wt% Que. Que stability against crystallization and solution concentrations from these ASDs were significantly higher than those observed for physical mixtures and crystalline Que. PVP stabilizes against both Que degradation and recrystallization; in contrast, these carboxylated cellulose derivatives inhibit recrystallization but release Que slowly. PVP ASDs afforded fast and complete drug release, while ASDs using these three cellulose derivatives provide slow, incomplete, pH-triggered drug release.
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Affiliation(s)
- Bin Li
- Department of Sustainable Biomaterials, Macromolecules and Interfaces Institute, and Institute for Critical Technology and Applied Sciences, Virginia Tech, Blacksburg, VA 24061, USA
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Konecsni K, Low NH, Nickerson MT. Chitosan-tripolyphosphate submicron particles as the carrier of entrapped rutin. Food Chem 2012; 134:1775-9. [PMID: 23442620 DOI: 10.1016/j.foodchem.2012.03.070] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2011] [Revised: 02/14/2012] [Accepted: 03/19/2012] [Indexed: 01/15/2023]
Abstract
Chitosan (CH)-tripolyphosphate (TPP) submicron particles were formed as carriers of entrapped rutin, and the release properties characterized using simulated gastric juices and fluids of the small intestine. Particle size, charge and entrapment efficiencies were investigated as a function of the CH:TPP molar ratio (2.0:1.0-5.0:1.0). Size was found to decrease from ~814 nm for the 2.0:1:0 mass ratio to ~528 nm for the ratios between 2.5:1.0 and 4.0:1.0, and then again to ~322 nm for the 5:0:1.0 mass ratio, whereas all particles carried a positive surface charge, increasing from +21 to +59 mV as the ratio increased from 2.0:1.0 to 5.0:1.0. The percent entrapment was found to rise from 3.68% to 57.6% as the ratios increased from 2.0:1:0 to 4.0:1:0, before reaching a plateau. Submicron particles (4.0:1.0 mass ratio only) were found to retain rutin in simulated gastric fluids, whereas in conditions which simulated fluids from the small intestine, only 20% of the entrapped rutin was released and 80% remained absorbed to the CH:TPP carriers. Such particles have applications for the delivery of phenolics in food and natural health products.
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Affiliation(s)
- K Konecsni
- Department of Food and Bioproducts Sciences, University of Saskatchewan, 51 Campus Drive, Saskatoon, SK, Canada S7N 5A8
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Flavonoids as Anti-Inflammatory and Analgesic Drugs: Mechanisms of Action and Perspectives in the Development of Pharmaceutical Forms. BIOACTIVE NATURAL PRODUCTS 2012. [DOI: 10.1016/b978-0-444-53836-9.00026-8] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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Sansone F, Picerno P, Mencherini T, Villecco F, D’Ursi A, Aquino R, Lauro M. Flavonoid microparticles by spray-drying: Influence of enhancers of the dissolution rate on properties and stability. J FOOD ENG 2011. [DOI: 10.1016/j.jfoodeng.2010.10.015] [Citation(s) in RCA: 99] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Dalmoro A, Lamberti G, Titomanlio G, Barba AA, d’Amore M. Enteric micro-particles for targeted oral drug delivery. AAPS PharmSciTech 2010; 11:1500-7. [PMID: 20931307 DOI: 10.1208/s12249-010-9528-3] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2010] [Accepted: 09/28/2010] [Indexed: 11/30/2022] Open
Abstract
This work is focused on production of enteric-coated micro-particles for oral administration, using a water-in-oil-in-water solvent evaporation technique. The active agent theophylline was first encapsulated in cellulose acetate phthalate (CAP), a pH-sensitive well-known polymer, which is insoluble in acid media but dissolves at neutral pH (above pH 6). In this first step, CAP was chosen with the aim optimizing the preparation and characterization methods. The desired release pattern has been obtained (low release at low pH, higher release at neutral pH) but in presence of a low encapsulation efficiency. Then, the CAP was replaced by a novel-synthesized pH-sensitive poly(methyl methacrylate-acrylic acid) copolymer, poly(MMA-AA). In this second step, the role of two process parameters was investigated, i.e., the percentage of emulsion stabilizer (polyvinyl alcohol, PVA) and the stirring power for the double emulsion on the encapsulation efficiency. The encapsulation efficiency was found to increase with PVA percentage and to decrease with the stirring power. By increasing the PVA content and by decreasing the stirring power, a high stable double emulsion was obtained, and this explains the increase in encapsulation efficiency found.
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Sansone F, Rossi A, Del Gaudio P, De Simone F, Aquino RP, Lauro MR. Hesperidin gastroresistant microparticles by spray-drying: preparation, characterization, and dissolution profiles. AAPS PharmSciTech 2009; 10:391-401. [PMID: 19381835 DOI: 10.1208/s12249-009-9219-0] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2008] [Accepted: 03/09/2009] [Indexed: 11/30/2022] Open
Abstract
Gastroresistant microparticles for oral administration of hesperidin (Hd) were produced by spray-drying using cellulose acetate phthalate (CAP) as enteric polymer in different polymer/Hd weight ratio (1:1, 3:1, and 5:1), and a series of enhancers of the dissolution rate, such as sodium carboxymethylcellulose crosslinked (CMC), sodium dodecylbenzene sulfonate (SDBS), or Tween85. The raw materials and the microparticles were investigated by differential-scanning calorimetry, X-ray diffraction, infrared spectroscopy and imaged using scanning electron and fluorescence microscopy. In vitro dissolution tests were conducted using a pH-change method to investigate the influence of formulative parameters on the dissolution/release properties of the drug. CAP/Hd microparticles showed a good gastro-resistance but incomplete drug dissolution in the simulated intestinal fluid (SIF). The presence of the enhancers in the formulation produced well-formed microparticles with different size and morphology, containing the drug well coated by the polymer. All the enhancers were able to increase the dissolution rate of Hd in the simulated intestinal environment without altering CAP ability to protect Hd in the acidic fluid. The spray-drying technique and process conditions selected were effective in microencapsulating and stabilizing the flavonoid giving satisfactory encapsulation efficiency, product yield, and microparticles morphology, and a complete drug release in the intestine.
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Physical characteristics and aerosol performance of naringin dry powders for pulmonary delivery prepared by spray-drying. Eur J Pharm Biopharm 2008; 72:206-13. [PMID: 18996478 DOI: 10.1016/j.ejpb.2008.10.007] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2008] [Revised: 10/01/2008] [Accepted: 10/06/2008] [Indexed: 11/24/2022]
Abstract
The aim of the present work was to develop dry powders containing naringin for a direct administration to the lung to combat oxidative stress. Naringin microparticles were prepared by spray-drying the neat flavonoid (2-5% w/v) from different water/ethanol co-solvents. The spray-dried powders were characterised for morphology, density, particle size distribution, residual humidity, crystallinity, solubility, thermal behaviour and respirable fraction. The fine fraction of the powders was measured by single-stage glass impinger and Andersen cascade impactor, using the Turbospin device for the deposition tests, wherein the dose to be aerosolised was premetered in a gelatine capsule. By increasing the ethanol content, the feed liquid turned from a suspension into a solution: the spray of flavonoid suspensions led to powders with high crystallinity degree, low water solubility and high bulk density, while the spray of drug solutions led to more amorphous particles, with higher solubility, lower density and improved aerodynamic behaviour. The optimisation of the operative parameters produced enhanced aerosol performance of the flavonoid powders containing only the active compound.
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Scarfato P, Avallone E, Iannelli P, Aquino RP, Lauro MR, Rossi A, Acierno D. Quercetin microspheres by solvent evaporation: Preparation, characterization and release behavior. J Appl Polym Sci 2008. [DOI: 10.1002/app.28365] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Lauro M, De Simone F, Sansone F, Iannelli P, Aquino R. Preparations and release characteristics of naringin and naringenin gastro-resistant microparticles by spray-drying. J Drug Deliv Sci Technol 2007. [DOI: 10.1016/s1773-2247(07)50018-3] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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23
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Water soluble chitosan conjugates with plant antioxidants and polyelectrolyte complexes on their basis. J Drug Deliv Sci Technol 2006. [DOI: 10.1016/s1773-2247(06)50051-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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