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Curcio M, Gianfranco Spizzirri U, Iemma F, Puoci F, Cirillo G, Parisi OI, Picci N. Grafted thermo-responsive gelatin microspheres as delivery systems in triggered drug release. Eur J Pharm Biopharm 2010; 76:48-55. [PMID: 20580821 DOI: 10.1016/j.ejpb.2010.05.008] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2009] [Revised: 03/24/2010] [Accepted: 05/17/2010] [Indexed: 10/19/2022]
Abstract
In this paper, a novel class of microspheric hydrogels was synthesized by grafting of N-isopropyacrylamide (NIPAAm) with gelatin. The possibility of inserting commercial gelatin in a crosslinked structure bearing thermo-sensitive moieties, by radical process, represents an interesting innovation that significantly improves the device performance, opening new applications in biomedical and pharmaceutical fields. This synthetic approach allows a modification of the polymeric network composition, producing hydrogels with suitable physico-chemical properties and a transition temperature higher than NIPAAm homopolymers. The incorporation of monomers into the network was confirmed by infrared spectroscopy, and the composition of the polymerization feed was found to strictly influence the network density and the shape of hydrogels. Thermal analyses showed negative thermo-responsive behaviour with shrinking/swelling transition values in the temperature range 34.6-34.8 degrees C, according to the amount of the hydrophilic portions in the network. In order to test the preformed materials as drug carriers, diclofenac sodium salt was loaded into the spherical microparticles. After the determination of the drug entrapment percent, drug release profiles in media at different temperature were analysed. By using semi-empirical equations, the release mechanism was extensively studied and the diffusional contribution was evaluated.
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Iemma F, Cirillo G, Puoci F, Trombino S, Castiglione M, Picci N. Iron (III) chelation and antioxidant properties of myo-inositol phosphorylated polymeric microspheres. J Pharm Pharmacol 2010; 59:597-601. [PMID: 17430645 DOI: 10.1211/jpp.59.4.0016] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
Abstract
New chelating and antioxidant polymeric microspheres were synthesized through precipitation polymerization of 4-O-(4-vinylbenzyl)-myo-inositol 1,3,5-orthoformate with ethylene glycol dimethacrylate and subsequent exhaustive phosphorylation of the myo-inositol groups with phosphoric acid. Three different microspheres using different molar ratios of the two co-monomers were prepared. The antioxidant properties of these polymers were evaluated in rat liver microsomal membranes. This study showed that the macromolecular systems are very effective at inhibiting iron-dependent lipid peroxidation of the membranes. This antioxidant effect is due to the chelating properties of polyphosphorylated inositol residues in the polymeric devices toward ferric ions. The amount of polyphosphorylated inositol in the microspheres was found to play a crucial role in determining the chelating efficiency of the polymers: the polymer with the greatest amount of polyphosphorylated inositol was the most powerful antioxidant polymer.
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Spizzirri UG, Iemma F, Puoci F, Xue F, Gao W, Cirillo G, Curcio M, Parisi OI, Picci N. Synthesis of hydrophilic microspheres with LCST close to body temperature for controlled dual-sensitive drug release. POLYM ADVAN TECHNOL 2010. [DOI: 10.1002/pat.1660] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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79
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Iemma F, Puoci F, Curcio M, Parisi OI, Cirillo G, Spizzirri UG, Picci N. Ferulic acid as a comonomer in the synthesis of a novel polymeric chain with biological properties. J Appl Polym Sci 2010. [DOI: 10.1002/app.31067] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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80
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Spizzirri UG, Parisi OI, Iemma F, Cirillo G, Puoci F, Curcio M, Picci N. Antioxidant–polysaccharide conjugates for food application by eco-friendly grafting procedure. Carbohydr Polym 2010. [DOI: 10.1016/j.carbpol.2009.08.010] [Citation(s) in RCA: 102] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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81
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Cassano R, Trombino S, Cilea A, Ferrarelli T, Muzzalupo R, Picci N. L-Lysine Pro-Prodrug Containing trans-Ferulic Acid for 5-Amino Salicylic Acid Colon Delivery: Synthesis, Characterization and in Vitro Antioxidant Activity Evaluation. Chem Pharm Bull (Tokyo) 2010; 58:103-5. [DOI: 10.1248/cpb.58.103] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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82
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Muzzalupo R, Tavano L, Nicoletta FP, Trombino S, Cassano R, Picci N. Liquid crystalline Pluronic 105 pharmacogels as drug delivery systems: preparation, characterization, andin vitrotransdermal release. J Drug Target 2009; 18:404-11. [DOI: 10.3109/10611860903494211] [Citation(s) in RCA: 13] [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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83
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Curcio M, Parisi OI, Cirillo G, Spizzirri UG, Puoci F, Iemma F, Picci N. Selective recognition of methotrexate by molecularly imprinted polymers. E-POLYMERS 2009. [DOI: 10.1515/epoly.2009.9.1.950] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractThe aim of this study is the preparation of molecularly imprinted polymers with high selectivity for metotrexate (MTX), a useful antineoplastic drug widely employed in clinical trials. Methacrylic acid, 2-(dimethylamino)ethyl methacrylate and a mixture of them were tested as functional monomers in order to optimize the performance of imprinted materials. The specificity and the selectivity of imprinted polymers was tested by performing rebinding experiments in water at pH 7.4. The best results were obtained by employing both functional monomers in the polymeric feed. In this way, each monomer interacts with complementary functionalities on template molecule, stabilizing the prepolymerization complex and minimizing the repulsive effects (due to the ionization of functional groups) in the rebinding media.
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84
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Barone E, Trombino S, Cassano R, Sgambato A, de Paola B, Stasio ED, Picci N, Preziosi P, Mancuso C. Characterization of the S‐denitrosylating activity of bilirubin. J Cell Mol Med 2009. [DOI: 10.1111/j.1582-4934.2008.00680.x] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
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85
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Cirillo G, Curcio M, Parisi OI, Puoci F, Iemma F, Spizzirri UG, Picci N. Gastro-intestinal sustained release of phytic acid by molecularly imprinted microparticles. Pharm Dev Technol 2009; 15:526-31. [DOI: 10.3109/10837450903397602] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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86
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Cassano R, Trombino S, Ferrarelli T, Muzzalupo R, Tavano L, Picci N. Synthesis and antibacterial activity evaluation of a novel cotton fiber (Gossypium barbadense) ampicillin derivative. Carbohydr Polym 2009. [DOI: 10.1016/j.carbpol.2009.05.030] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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87
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Tavano L, Muzzalupo R, Cassano R, Trombino S, Ferrarelli T, Picci N. New sucrose cocoate based vesicles: Preparation, characterization and skin permeation studies. Colloids Surf B Biointerfaces 2009; 75:319-22. [PMID: 19782543 DOI: 10.1016/j.colsurfb.2009.09.003] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2009] [Revised: 09/01/2009] [Accepted: 09/02/2009] [Indexed: 11/24/2022]
Abstract
A commercial sucrose cocoate surfactant was used to obtain a new vesicular system for transdermal drug delivery. The preparation, the dimensional and morphological characterizations and the skin permeation profile of these new niosomes were evaluated. Moreover we studied the possible employment of mixture of sucrose cocoate and cholesterol at different weigh ratios for the vesicles preparation and we analyzed the influence of cholesterol on niosomes properties. Diclofenac and Sulfadiazine were used as model drugs. Results suggest that sucrose cocoate was able to form vesicles in the presence or not of cholesterol and the addition of cholesterol leads to a variation of size: larger vesicles were obtained in the absence of cholesterol both in empty and drug-loaded niosomes. All vesicles were spherical and regular in shape. In vitro skin permeation profiles were significantly higher than the free drug solution, indicating the favourable relations between skin and niosomes. The faster release of the drug was found for niosomes with no cholesterol or with a reduced amount of this membrane additive, in particular the optimal formulation was that in which the cholesterol content was about 27 wt% of total lipid amount: probably this value is a good compromise between the membrane stability and its deformation capacity, allowing a higher drug permeation across the skin.
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88
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Curcio M, Puoci F, Iemma F, Parisi OI, Cirillo G, Spizzirri UG, Picci N. Covalent insertion of antioxidant molecules on chitosan by a free radical grafting procedure. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2009; 57:5933-5938. [PMID: 19566085 DOI: 10.1021/jf900778u] [Citation(s) in RCA: 270] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
In this work, the synthesis of gallic acid-chitosan and catechin-chitosan conjugates was carried out by adopting a free radical-induced grafting procedure. For this purpose, an ascorbic acid/hydrogen peroxide redox pair was employed as radical initiator. The formation of covalent bonds between antioxidant and biopolymer was verified by performing UV, FT-IR, and DSC analyses, whereas the antioxidant properties of chitosan conjugates were compared with that of a blank chitosan, treated in the same conditions but in the absence of antioxidant molecules. The good antioxidant activity shown by functionalized materials proved the efficiency of the reaction method.
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89
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Parisi OI, Puoci F, Iemma F, De Luca G, Curcio M, Cirillo G, Spizzirri UG, Picci N. Antioxidant and spectroscopic studies of crosslinked polymers synthesized by grafting polymerization of ferulic acid. POLYM ADVAN TECHNOL 2009. [DOI: 10.1002/pat.1499] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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90
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Cosco D, Paolino D, Muzzalupo R, Celia C, Citraro R, Caponio D, Picci N, Fresta M. Novel PEG-coated niosomes based on bola-surfactant as drug carriers for 5-fluorouracil. Biomed Microdevices 2009; 11:1115-25. [PMID: 19507033 DOI: 10.1007/s10544-009-9328-2] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Innovative niosomes made up of α,ω-hexadecyl-bis-(1-aza-18-crown-6) (bola), Span 80® and cholesterol (2:5:2 molar ratio) are proposed as suitable delivery systems for the administration of 5-fluorouracil (5-FU), an antitumoral compound largely used in the treatment of breast cancer. The bola-niosomes, after sonication procedure, showed mean sizes of ~200 nm and a loading capacity of ~40% with respect to the amount of 5-FU added during the preparation. Similar findings were achieved with PEG-coated bola-niosomes (bola, Span 80(R), cholesterol, DSPE-mPEG2000, 2:5:2:0.1 molar ratio respectively). 5-FU-loaded PEG-coated and uncoated bola-niosomes were tested on MCF-7 and T47D cells. Both bola-niosome formulations provided an increase in the cytotoxic effect with respect to the free drug. Confocal laser scanning microscopy studies were carried out to evaluate both the extent and the time-dependent bola-niosome-cell interaction. In vivo experiments on MCF-7 xenograft tumor SCID mice models showed a more effective antitumoral activity of the PEGylated niosomal 5-FU at a concentration ten times lower (8 mg/kg) than that of the free solution of the drug (80 mg/kg) after a treatment of 30 days.
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91
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Puoci F, Iemma F, Cirillo G, Curcio M, Parisi OI, Spizzirri UG, Picci N. New restricted access materials combined to molecularly imprinted polymers for selective recognition/release in water media. Eur Polym J 2009. [DOI: 10.1016/j.eurpolymj.2009.01.021] [Citation(s) in RCA: 106] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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92
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Palozza P, Torelli C, Boninsegna A, Simone R, Catalano A, Mele MC, Picci N. Growth-inhibitory effects of the astaxanthin-rich alga Haematococcus pluvialis in human colon cancer cells. Cancer Lett 2009; 283:108-17. [PMID: 19423215 DOI: 10.1016/j.canlet.2009.03.031] [Citation(s) in RCA: 110] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2008] [Revised: 03/17/2009] [Accepted: 03/18/2009] [Indexed: 01/17/2023]
Abstract
The growth-inhibitory effects of the astaxanthin-rich Haematococcus pluvialis were studied in HCT-116 colon cancer cells. H. pluvialis extract (5-25 microg/ml) inhibited cell growth in a dose- and time-dependent manner, by arresting cell cycle progression and by promoting apoptosis. At 25 microg/ml of H. pluvialis extract, an increase of p53, p21(WAF-1/CIP-1) and p27 expression (220%, 160%, 250%, respectively) was observed, concomitantly with a decrease of cyclin D1 expression (58%) and AKT phosphorylation (21%). Moreover, the extract, at the same concentration, strongly up-regulated apoptosis by modifying the ratio of Bax/Bcl-2 and Bcl-XL, and increased the phosphorylation of p38, JNK, and ERK1/2 by 160%, 242%, 280%, respectively. Growth-inhibitory effects by H. pluvialis were also observed in HT-29, LS-174, WiDr, SW-480 cells. This study suggests that H. pluvialis may protect from colon cancer.
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93
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Spizzirri UG, Iemma F, Puoci F, Cirillo G, Curcio M, Parisi OI, Picci N. Synthesis of antioxidant polymers by grafting of gallic acid and catechin on gelatin. Biomacromolecules 2009; 10:1923-30. [PMID: 19413362 DOI: 10.1021/bm900325t] [Citation(s) in RCA: 141] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A novel, simple, and cheap method to synthesize antioxidant-protein conjugates by grafting reaction was developed employing a hydrogen peroxide-ascorbic acid pair as radical initiator system. Our challenge was to covalently bind molecules with tested antioxidant activity, as gallic acid (GA) and catechin (CT) to a biomacromolecule, as gelatin, extensively used in the pharmaceutical, cosmetic, and food industry. In this way, two gelatin conjugates, bearing GA and CT covalently bounded to a side chain of protein, were synthesized. Calorimetric, UV-vis, and fluorescence analyses were performed to verify the covalent bond between antioxidant molecules and gelatin, and the antioxidant activity of conjugates was compared to that of a control polymer submitted to the same reaction conditions without antioxidant molecule. The ability of synthesized materials to inhibit 2,2'-diphenyl-1-picrylhydrazyl, hydroxyl radicals, and linoneic acid peroxidation was determined and, to well characterized antioxidant properties of grafted biomacromolecules, disposable phenolic equivalents and total antioxidant activity were calculated. The conjugates showed a good antioxidant activity, confirming the efficiency of the synthetic strategy proposed in this paper. The results clearly showed that antioxidant moieties covalently bounded to a natural polymer allow to introduce in the macromolecule peculiar features for specific industrial applications.
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Cassano R, Trombino S, Muzzalupo R, Tavano L, Picci N. A novel dextran hydrogel linking trans-ferulic acid for the stabilization and transdermal delivery of vitamin E. Eur J Pharm Biopharm 2009; 72:232-8. [DOI: 10.1016/j.ejpb.2008.10.003] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2008] [Revised: 09/04/2008] [Accepted: 10/01/2008] [Indexed: 12/22/2022]
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95
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Cirillo G, Iemma F, Puoci F, Parisi OI, Curcio M, Spizzirri UG, Picci N. Imprinted hydrophilic nanospheres as drug delivery systems for 5-fluorouracil sustained release. J Drug Target 2009; 17:72-7. [PMID: 19016107 DOI: 10.1080/10611860802455813] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Molecularly imprinted hydrogel nanospheres as devices for the controlled/sustained release of 5-fluororacil in biological fluids were synthesized employing one-pot precipitation technique as the polymerization method. Methacrylic acid as a functional monomer and ethylene glycole dimethacrylate as a cross-linker were used in polymeric feed. Morphological and hydrophilic properties were determined by scanning electron microscopy and water content measurement, and recognition and selectivity properties of spherical molecularly imprinted polymers were compared with the spherical non-imprinted polymers, both in organic (acetonitrile) and water media. Finally, in vitro release studies were performed in plasma simulating fluids.
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96
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Iemma F, Spizzirri UG, Puoci F, Cirillo G, Curcio M, Parisi OI, Picci N. Synthesis and release profile analysis of thermo-sensitive albumin hydrogels. Colloid Polym Sci 2009. [DOI: 10.1007/s00396-009-2027-y] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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97
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Muzzalupo R, Tavano L, Rossi CO, Cassano R, Trombino S, Picci N. Synthesis and properties of methacrylic-functionalized tween monomer networks. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:1800-1806. [PMID: 19105720 DOI: 10.1021/la8034193] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Tween surfactants possess very interesting properties such as biodegradability, biocompatibility, and low toxicity. The synthesis of acrylate monomers by means of the chemical modification of polysorbate surfactants Tween 20, 40, and 60 with unsaturated groups is described. Monomers were obtained as a result of the reaction of methacrylic anhydride with different grades of Tween surfactants. Further polymerization was carried out in tetrahydrofuran, dimethylformamide, and a mixture of water-tetrahydrofuran. Physicochemistry properties of the polymer networks were investigated, and the obtained results reveal that they strongly depend on the type of solvent used during the polymerization, as well as on the concentration of the casting solution. In particular, our study demonstrated that, depending on the solvent boiling point, i.e., the facility to remove the solvent from the polymer matrix, it is possible to predict properties of the network morphology. Moreover, in vitro studies on controlled release were accomplished to demonstrate the possibility of utilizing these new materials as drug delivery systems. All resulting networks represent a novel class of cross-linked polymeric materials useful both in pharmaceutical and chemical applications.
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98
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Trombino S, Cassano R, Bloise E, Muzzalupo R, Tavano L, Picci N. Synthesis and antioxidant activity evaluation of a novel cellulose hydrogel containing trans-ferulic acid. Carbohydr Polym 2009. [DOI: 10.1016/j.carbpol.2008.05.018] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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99
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Puoci F, Iemma F, Curcio M, Parisi OI, Cirillo G, Spizzirri UG, Picci N. Synthesis of methacrylic-ferulic acid copolymer with antioxidant properties by single-step free radical polymerization. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2008; 56:10646-10650. [PMID: 18973340 DOI: 10.1021/jf802302k] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
A novel, simple, and cheap method to synthesize antioxidant methacrylic-ferulic acid copolymer (PMAA-FA) by free radical polymerization was developed by employing a hydrogen peroxide-ascorbic acid pair to produce hydroxyl radicals acting as radical initiators. FT-IR spectra were performed to verify the insertion of ferulic acid into the polymeric chain, and the antioxidant activity of PMAA-FA was compared to that of a control polymer synthesized in the absence of antioxidant molecule. Good antioxidant activity was demonstrated by obtained materials, showing the efficiency of the polymerization method. This material could be useful in the pharmaceutical field and in the food industry (food packaging).
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Carino IS, Pasqua L, Testa F, Aiello R, Puoci F, Iemma F, Picci N. Silica-Based Mesoporous Materials as Drug Delivery System for Methotrexate Release. Drug Deliv 2008; 14:491-5. [DOI: 10.1080/10717540701606244] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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