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Vitali A, Paolicelli P, Bigi B, Trilli J, Di Muzio L, Carriero VC, Casadei MA, Petralito S. Liposome Encapsulation of the Palmitoyl-KTTKS Peptide: Structural and Functional Characterization. Pharmaceutics 2024; 16:219. [PMID: 38399273 PMCID: PMC10892597 DOI: 10.3390/pharmaceutics16020219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2023] [Revised: 01/25/2024] [Accepted: 01/31/2024] [Indexed: 02/25/2024] Open
Abstract
In this study, the amphiphilic N-palmitoyl-KTTKS peptide was integrated in the bilayer of egg-derived phosphatidylcholine (PC) vesicles using two different preparation methods, namely thin-film evaporation (TLE) and reverse-phase evaporation (REV). Both the REV and TLE methods allowed for the formation of homogeneous liposome dispersions (PdI < 0.20) with mean hydrodynamic diameters of <100 nm and <200 nm, respectively, a net negative surface charge and a percentage of structured phospholipids higher than 90%. The inclusion of the amphiphilic N-palmitoyl-KTTKS peptide within phospholipid-based vesicles could improve peptide stability and skin delivery. Therefore, the obtained liposomes were evaluated via experiments assessing the synthesis of collagen and the ECM in 3T3-NIH fibroblasts. The obtained results showed that, when delivered with PC liposomes, pal-KTTKS stimulated collagen production more than free pentapeptide and 1 mM ascorbic acid, used as a positive control.
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Affiliation(s)
- Alberto Vitali
- Istituto di Scienze e Tecnologie Chimiche “Giulio Natta”, National Research Council of Italy, Largo Francesco Vito 1, 00168 Rome, Italy;
| | - Patrizia Paolicelli
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy; (B.B.); (J.T.); (L.D.M.); (V.C.C.); (M.A.C.); (S.P.)
| | - Barbara Bigi
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy; (B.B.); (J.T.); (L.D.M.); (V.C.C.); (M.A.C.); (S.P.)
| | - Jordan Trilli
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy; (B.B.); (J.T.); (L.D.M.); (V.C.C.); (M.A.C.); (S.P.)
| | - Laura Di Muzio
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy; (B.B.); (J.T.); (L.D.M.); (V.C.C.); (M.A.C.); (S.P.)
| | - Vito Cosimo Carriero
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy; (B.B.); (J.T.); (L.D.M.); (V.C.C.); (M.A.C.); (S.P.)
| | - Maria Antonietta Casadei
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy; (B.B.); (J.T.); (L.D.M.); (V.C.C.); (M.A.C.); (S.P.)
| | - Stefania Petralito
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy; (B.B.); (J.T.); (L.D.M.); (V.C.C.); (M.A.C.); (S.P.)
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Petralito S, Garzoli S, Ovidi E, Laghezza Masci V, Trilli J, Bigi B, Di Muzio L, Carriero VC, Casadei MA, Paolicelli P. Long-Term Stability of Lavandula x intermedia Essential Oil Nanoemulsions: Can the Addition of the Ripening Inhibitor Impact the Biocidal Activity of the Nanoformulations? Pharmaceutics 2024; 16:108. [PMID: 38258118 PMCID: PMC10821147 DOI: 10.3390/pharmaceutics16010108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Revised: 12/31/2023] [Accepted: 01/12/2024] [Indexed: 01/24/2024] Open
Abstract
In this work, Lavandula x intermedia essential oil (LEO) was encapsulated in lipid-based nanoemulsions (NanoLEO) using the solvent-displacement technique. In order to preserve the colloidal stability of the formulation, LEO was appropriately doped with the incorporation of different levels of a water-insoluble oil used as a ripening inhibitor. All the nanoemulsion samples were evaluated in terms of the impact of the water-insoluble oil on the nanoemulsion formation, physical-chemical properties, and antibacterial effectiveness against E. coli (Gram-negative) and B. cereus (Gram-positive). The presence of the inert oil added benefits to the formulations in terms of appearance, colloidal stability, and loss of volatile components. However, the antimicrobial activity of the nanoemulsions dramatically decreased with the ripening inhibitor addition, probably because it hampered the internalization of the antimicrobial components of LEO within the bacterial cell membranes, thus nullifying the delivery ability of the nanoemulsion formulation. On the contrary, the undoped NanoLEO formulation showed unaltered antibacterial activity in both E. coli and B. cereus up to 40 weeks from the preparation.
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Affiliation(s)
- Stefania Petralito
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, P.le Aldo Moro 5, 00185 Rome, Italy; (S.P.); (J.T.); (B.B.); (L.D.M.); (V.C.C.); (M.A.C.); (P.P.)
| | - Stefania Garzoli
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, P.le Aldo Moro 5, 00185 Rome, Italy; (S.P.); (J.T.); (B.B.); (L.D.M.); (V.C.C.); (M.A.C.); (P.P.)
| | - Elisa Ovidi
- Department for the Innovation in Biological, Agrofood and Forestal Systems, Tuscia University, 01100 Viterbo, Italy; (E.O.); (V.L.M.)
| | - Valentina Laghezza Masci
- Department for the Innovation in Biological, Agrofood and Forestal Systems, Tuscia University, 01100 Viterbo, Italy; (E.O.); (V.L.M.)
| | - Jordan Trilli
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, P.le Aldo Moro 5, 00185 Rome, Italy; (S.P.); (J.T.); (B.B.); (L.D.M.); (V.C.C.); (M.A.C.); (P.P.)
| | - Barbara Bigi
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, P.le Aldo Moro 5, 00185 Rome, Italy; (S.P.); (J.T.); (B.B.); (L.D.M.); (V.C.C.); (M.A.C.); (P.P.)
| | - Laura Di Muzio
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, P.le Aldo Moro 5, 00185 Rome, Italy; (S.P.); (J.T.); (B.B.); (L.D.M.); (V.C.C.); (M.A.C.); (P.P.)
| | - Vito Cosimo Carriero
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, P.le Aldo Moro 5, 00185 Rome, Italy; (S.P.); (J.T.); (B.B.); (L.D.M.); (V.C.C.); (M.A.C.); (P.P.)
| | - Maria Antonietta Casadei
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, P.le Aldo Moro 5, 00185 Rome, Italy; (S.P.); (J.T.); (B.B.); (L.D.M.); (V.C.C.); (M.A.C.); (P.P.)
| | - Patrizia Paolicelli
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, P.le Aldo Moro 5, 00185 Rome, Italy; (S.P.); (J.T.); (B.B.); (L.D.M.); (V.C.C.); (M.A.C.); (P.P.)
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Carriero VC, Di Muzio L, Petralito S, Casadei MA, Paolicelli P. Cryogel Scaffolds for Tissue-Engineering: Advances and Challenges for Effective Bone and Cartilage Regeneration. Gels 2023; 9:979. [PMID: 38131965 PMCID: PMC10742915 DOI: 10.3390/gels9120979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 12/07/2023] [Accepted: 12/12/2023] [Indexed: 12/23/2023] Open
Abstract
Critical-sized bone defects and articular cartilage injuries resulting from trauma, osteonecrosis, or age-related degeneration can be often non-healed by physiological repairing mechanisms, thus representing a relevant clinical issue due to a high epidemiological incidence rate. Novel tissue-engineering approaches have been proposed as an alternative to common clinical practices. This cutting-edge technology is based on the combination of three fundamental components, generally referred to as the tissue-engineering triad: autologous or allogenic cells, growth-stimulating factors, and a scaffold. Three-dimensional polymer networks are frequently used as scaffolds to allow cell proliferation and tissue regeneration. In particular, cryogels give promising results for this purpose, thanks to their peculiar properties. Cryogels are indeed characterized by an interconnected porous structure and a typical sponge-like behavior, which facilitate cellular infiltration and ingrowth. Their composition and the fabrication procedure can be appropriately tuned to obtain scaffolds that match the requirements of a specific tissue or organ to be regenerated. These features make cryogels interesting and promising scaffolds for the regeneration of different tissues, including those characterized by very complex mechanical and physical properties, such as bones and joints. In this review, state-of-the-art fabrication and employment of cryogels for supporting effective osteogenic or chondrogenic differentiation to allow for the regeneration of functional tissues is reported. Current progress and challenges for the implementation of this technology in clinical practice are also highlighted.
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Affiliation(s)
| | | | | | | | - Patrizia Paolicelli
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, 00185 Rome, Italy; (V.C.C.); (L.D.M.); (S.P.); (M.A.C.)
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Di Muzio L, Paolicelli P, Trilli J, Petralito S, Carriero VC, Brandelli C, Spano M, Sobolev AP, Mannina L, Casadei MA. Insights into the reaction of chondroitin sulfate with glycidyl methacrylate: 1D and 2D NMR investigation. Carbohydr Polym 2022; 296:119916. [DOI: 10.1016/j.carbpol.2022.119916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 07/04/2022] [Accepted: 07/21/2022] [Indexed: 11/02/2022]
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Cairone F, Garzoli S, Menghini L, Simonetti G, Casadei MA, Di Muzio L, Cesa S. Valorization of Kiwi Peels: Fractionation, Bioactives Analyses and Hypotheses on Complete Peels Recycle. Foods 2022; 11:foods11040589. [PMID: 35206065 PMCID: PMC8871187 DOI: 10.3390/foods11040589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 02/14/2022] [Accepted: 02/16/2022] [Indexed: 11/24/2022] Open
Abstract
Kiwi fruit samples (Actinidia deliciosa Planch, cv. Hayward) represent a suitable and good source for fibers obtainment as well as for polyphenolic and carotenoid extraction. With this aim, in this study they were submitted to a double phase extraction to separate insoluble fibers by an organic phase containing lipophilic substances and an hydroalcoholic phase containing polyphenols and soluble fibers. Insoluble fibers could be separated by filtration and sent to be micronized and reused. Hydroalcoholic fractions were then furtherly fractionated by solid-phase extraction. Data coming from the color CIEL*a*b* and the HPLC-DAD analyses of the extracts were compared and correlate with those coming from the SPME-GC/MS analysis of either the finely shredded peels or of the extracts. The obtained extracts were also submitted to anti-radical activity evaluation and anti-Candida activity. Results show that all of the obtained residues are value added products. Hypotheses were also made about the nature and the possible recycle of the obtained purified solid residue.
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Affiliation(s)
- Francesco Cairone
- Department of Drug Chemistry and Technology, “La Sapienza” University of Rome, 00185 Rome, Italy; (F.C.); (S.G.); (M.A.C.); (L.D.M.)
| | - Stefania Garzoli
- Department of Drug Chemistry and Technology, “La Sapienza” University of Rome, 00185 Rome, Italy; (F.C.); (S.G.); (M.A.C.); (L.D.M.)
| | - Luigi Menghini
- Department of Pharmacy, University “G. d’Annunzio”, Botanic Garden “Giardino dei Semplici”, 66100 Chieti, Italy;
| | - Giovanna Simonetti
- Department of Environmental Biology, “La Sapienza” University of Rome, 00185 Rome, Italy;
| | - Maria Antonietta Casadei
- Department of Drug Chemistry and Technology, “La Sapienza” University of Rome, 00185 Rome, Italy; (F.C.); (S.G.); (M.A.C.); (L.D.M.)
| | - Laura Di Muzio
- Department of Drug Chemistry and Technology, “La Sapienza” University of Rome, 00185 Rome, Italy; (F.C.); (S.G.); (M.A.C.); (L.D.M.)
| | - Stefania Cesa
- Department of Drug Chemistry and Technology, “La Sapienza” University of Rome, 00185 Rome, Italy; (F.C.); (S.G.); (M.A.C.); (L.D.M.)
- Correspondence: ; Tel.: +39-06-4991-3198
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Trilli J, Caramazza L, Paolicelli P, Casadei MA, Liberti M, Apollonio F, Petralito S. The Impact of Bilayer Rigidity on the Release from Magnetoliposomes Vesicles Controlled by PEMFs. Pharmaceutics 2021; 13:pharmaceutics13101712. [PMID: 34684003 PMCID: PMC8538647 DOI: 10.3390/pharmaceutics13101712] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 10/07/2021] [Accepted: 10/11/2021] [Indexed: 01/05/2023] Open
Abstract
Stimuli-sensitive nanocarriers have recently been developed as a powerful tool in biomedical applications such as drug delivery, detection, and gene transfer techniques. Among the external triggers investigated, low intensity magnetic fields represent a non-invasive way to remotely control the release of compounds from a magneto-sensitive carrier. Magnetoliposomes (MLs), i.e., liposomes entrapping magnetic nanoparticles (MNPs), are studied due to their capacity to transport hydrophobic and hydrophilic agents, their easy production, and due to the ability of MNPs to respond to a magnetic actuation determining the triggered release of the encapsulated compounds. Here we investigated the design and optimization of the MLs to obtain an efficient on-demand release of the transported compounds, due to the magneto-mechanical actuation induced by applying low-intensity pulsed electromagnetic fields (PEMFs). In particular we studied the effect of the bilayer packing on the ability of MLs, with oleic acid-coated MNPs encapsulated in the bilayer, to respond to PEMFs application. Three kinds of MLs are produced with an increasing rigidity of the bilayer, defined as Liquid Disorder, Liquid Order, and Gel MLs and the delivery of a hydrophilic dye (as a model drug) is investigated. Results demonstrate the efficacy of the magnetic trigger on high-ordered bilayers, which are unable to dampen the perturbation produced by MNPs motion.
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Affiliation(s)
- Jordan Trilli
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, 00185 Rome, Italy; (J.T.); (P.P.); (M.A.C.); (S.P.)
| | - Laura Caramazza
- ICEmB at DIET, Sapienza University of Rome, 00184 Rome, Italy or (L.C.); (M.L.)
- Center for Life Nano- & Neuro-Science, Fondazione Istituto Italiano di Tecnologia (IIT), 00161 Rome, Italy
| | - Patrizia Paolicelli
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, 00185 Rome, Italy; (J.T.); (P.P.); (M.A.C.); (S.P.)
| | - Maria Antonietta Casadei
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, 00185 Rome, Italy; (J.T.); (P.P.); (M.A.C.); (S.P.)
| | - Micaela Liberti
- ICEmB at DIET, Sapienza University of Rome, 00184 Rome, Italy or (L.C.); (M.L.)
- Center for Life Nano- & Neuro-Science, Fondazione Istituto Italiano di Tecnologia (IIT), 00161 Rome, Italy
| | - Francesca Apollonio
- ICEmB at DIET, Sapienza University of Rome, 00184 Rome, Italy or (L.C.); (M.L.)
- Center for Life Nano- & Neuro-Science, Fondazione Istituto Italiano di Tecnologia (IIT), 00161 Rome, Italy
- Correspondence:
| | - Stefania Petralito
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, 00185 Rome, Italy; (J.T.); (P.P.); (M.A.C.); (S.P.)
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Di Muzio L, Cienzo F, Paolicelli P, Petralito S, Garzoli S, Brandelli C, Trilli J, Antonietta Casadei M. A convenient strategy to synthesize highly tunable gelatin methacryloyl with very low gelation temperature. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2021.110538] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Pacelli S, Di Muzio L, Paolicelli P, Fortunati V, Petralito S, Trilli J, Casadei MA. Dextran-polyethylene glycol cryogels as spongy scaffolds for drug delivery. Int J Biol Macromol 2020; 166:1292-1300. [PMID: 33161086 DOI: 10.1016/j.ijbiomac.2020.10.273] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Revised: 10/03/2020] [Accepted: 10/30/2020] [Indexed: 11/16/2022]
Abstract
Cryogels are a particular type of hydrogels that possess great potential in both fields of drug delivery and tissue engineering. Based on these premises, the goal of this work was to develop a cytocompatible polymeric cryogel, which could be used as a spongy scaffold to promote the delivery of biomolecules. Precisely, the novel formulation was fabricated by combining dextran methacrylate (DEX-MA) and polyethylene glycol dimethacrylate (PEG-DMA) through radical polymerization at a temperature of -15 °C. The swelling, porosity, mechanical properties, and the drug release profile of vitamin B12 from the optimized cryogel were evaluated and compared to hydrogels fabricated at room temperature. The use of the cryo-gelation technique enabled the formation of scaffolds with improved swelling, increased interconnected porosity, and higher mechanical resistance than conventional hydrogels. The cryogels proved to be non-toxic and suitable carriers for the delivery of water-soluble biomolecules. Overall, the novel cytocompatible cryogel formulation could be used for biomedical applications that require the need of a macroporous scaffold for localized delivery of bioactive molecules.
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Affiliation(s)
- Settimio Pacelli
- Department of Biomedical Engineering, The University of Texas at San Antonio, San Antonio, TX, USA.
| | - Laura Di Muzio
- Department of Drug Chemistry and Technologies, "Sapienza" University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Patrizia Paolicelli
- Department of Drug Chemistry and Technologies, "Sapienza" University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Valeria Fortunati
- Department of Drug Chemistry and Technologies, "Sapienza" University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Stefania Petralito
- Department of Drug Chemistry and Technologies, "Sapienza" University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Jordan Trilli
- Department of Drug Chemistry and Technologies, "Sapienza" University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Maria Antonietta Casadei
- Department of Drug Chemistry and Technologies, "Sapienza" University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy
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Ovidi E, Masci VL, Taddei AR, Paolicelli P, Petralito S, Trilli J, Mastrogiovanni F, Tiezzi A, Casadei MA, Giacomello P, Garzoli S. Chemical Investigation and Screening of Anti-Proliferative Activity on Human Cell Lines of Pure and Nano-Formulated Lavandin Essential Oil. Pharmaceuticals (Basel) 2020; 13:ph13110352. [PMID: 33138099 PMCID: PMC7692866 DOI: 10.3390/ph13110352] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 10/19/2020] [Accepted: 10/26/2020] [Indexed: 01/17/2023] Open
Abstract
Lavandin essential oil (LEO), a natural sterile hybrid obtained by crossbreeding L. angustifolia × L. latifolia, is mainly composed by active components belonging to the family of terpenes endowed with relevant anti-proliferative activity, which can be enhanced by proper application of nanotechnology. In particular, this study reports the chemical characterization and the screening of the anti-proliferative activity on different human cell lines of pure and nano-formulated lavandin essential oil (EO). LEO and its formulation (NanoLEO) were analyzed by HS/GC-MS (Headspace/Gas Chromatography-Mass Spectrometry) to describe and compare their chemical volatile composition. The most abundant compounds were linalool and 1,8-cineole (LEO: 28.6%; 27.4%) (NanoLEO: 60.4%; 12.6%) followed by α-pinene (LEO: 9.6%; NanoLEO: 4.5%), camphor (LEO: 6.5%; NanoLEO: 7.0%) and linalyl acetate (LEO: 6.5%; NanoLEO: 3.6%). The cytotoxic effects of LEO and NanoLEO were investigated on human neuroblastoma cells (SHSY5Y), human breast adenocarcinoma cells (MCF-7), human lymphoblastic leukemia cells (CCRF CEM), human colorectal adenocarcinoma cells (Caco-2) and one normal breast epithelial cell (MCF10A) by the MTT (3-(4,5-Dimethylthiazol-2-yl)-2,5-Diphenyltetrazolium Bromide)-assay. Caco-2, MCF7 and MCF10A normal cells resulted more resistant to the treatment with LEO, while CCRF-CEM and SHSY5Y cells were more sensitive. The antiproliferative effect of LEO resulted amplified when the essential oil was supplied as nanoformulation, mainly in Caco-2 cells. Scanning and transmission electron microscopy investigations were carried out on Caco-2 cells to outline at ultrastructural level possible affections induced by LEO and NanoLEO treatments.
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Affiliation(s)
- Elisa Ovidi
- Department for the Innovation in Biological, Agrofood and Forestal Systems, Tuscia University, 01100 Viterbo, Italy; (E.O.); (V.L.M.); (F.M.); (A.T.)
| | - Valentina Laghezza Masci
- Department for the Innovation in Biological, Agrofood and Forestal Systems, Tuscia University, 01100 Viterbo, Italy; (E.O.); (V.L.M.); (F.M.); (A.T.)
| | | | - Patrizia Paolicelli
- Department of Drug Chemistry and Technology, Sapienza University, 00185 Roma RM, Italy; (P.P.); (S.P.); (J.T.); (M.A.C.); (P.G.)
| | - Stefania Petralito
- Department of Drug Chemistry and Technology, Sapienza University, 00185 Roma RM, Italy; (P.P.); (S.P.); (J.T.); (M.A.C.); (P.G.)
| | - Jordan Trilli
- Department of Drug Chemistry and Technology, Sapienza University, 00185 Roma RM, Italy; (P.P.); (S.P.); (J.T.); (M.A.C.); (P.G.)
| | - Fabio Mastrogiovanni
- Department for the Innovation in Biological, Agrofood and Forestal Systems, Tuscia University, 01100 Viterbo, Italy; (E.O.); (V.L.M.); (F.M.); (A.T.)
| | - Antonio Tiezzi
- Department for the Innovation in Biological, Agrofood and Forestal Systems, Tuscia University, 01100 Viterbo, Italy; (E.O.); (V.L.M.); (F.M.); (A.T.)
| | - Maria Antonietta Casadei
- Department of Drug Chemistry and Technology, Sapienza University, 00185 Roma RM, Italy; (P.P.); (S.P.); (J.T.); (M.A.C.); (P.G.)
| | - Pierluigi Giacomello
- Department of Drug Chemistry and Technology, Sapienza University, 00185 Roma RM, Italy; (P.P.); (S.P.); (J.T.); (M.A.C.); (P.G.)
| | - Stefania Garzoli
- Department of Drug Chemistry and Technology, Sapienza University, 00185 Roma RM, Italy; (P.P.); (S.P.); (J.T.); (M.A.C.); (P.G.)
- Correspondence:
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Adrover A, di Muzio L, Trilli J, Brandelli C, Paolicelli P, Petralito S, Casadei MA. Enhanced Loading Efficiency and Mucoadhesion Properties of Gellan Gum Thin Films by Complexation with Hydroxypropyl- β-Cyclodextrin. Pharmaceutics 2020; 12:pharmaceutics12090819. [PMID: 32872207 PMCID: PMC7558953 DOI: 10.3390/pharmaceutics12090819] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Revised: 08/21/2020] [Accepted: 08/25/2020] [Indexed: 11/16/2022] Open
Abstract
Polymeric oral thin films (OTFs) were prepared by the casting method, combining gellan gum (GG), a water-soluble polysaccharide, and glycerol (Gly) as a plasticizing agent. GG-Gly films were investigated as potential systems for buccal drug delivery using fluconazole (Class I of the Biopharmaceutical Classification System) as a model drug. At a low concentration of Gly drug precipitation occurred while, for higher concentrations of Gly, a significant deterioration of mucoadhesive and mechanical properties was observed. One possible way to overcome all these problems could be the addition of hydroxypropyl-β-cyclodextrin (HP-β-CD) to the GG-Gly formulation as a drug-precipitation inhibitor. In this work the effect of cyclodextrin addition on the mechanical, mucoadhesive, swelling and release properties of GG-Gly films was investigated. In-vitro drug release studies were carried out using the paddle type dissolution apparatus (USP II) and the millifluidic flow-through device (MFTD). A moving-boundary model for swelling dynamics and release in USP II is proposed to estimate the effective diffusivity of the solvent, HP-β-CD, fluconazole and complex fluconazole/HP-β-CD in the swelling film. Experimental results, supported by theoretical modeling, confirmed that gellan gum-low glycerol thin films including HP-β-CD represent a suitable formulation for fluconazole drug delivery. A sustained release was observed when GG-Gly film is loaded with a preformed complex fluconazole/HP-β-CD.
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Affiliation(s)
- Alessandra Adrover
- Dipartimento di Ingegneria Chimica, Materiali e Ambiente, Sapienza Universitá di Roma, Via Eudossiana 18, 00184 Rome, Italy
- Correspondence: (A.A.); (P.P.)
| | - Laura di Muzio
- Dipartimento di Chimica e Tecnologia del Farmaco, Sapienza Universitá di Roma, Piazzale Aldo Moro 5, 00185 Rome, Italy; (L.d.M.); (J.T.); (C.B.); (S.P.); (M.A.C.)
| | - Jordan Trilli
- Dipartimento di Chimica e Tecnologia del Farmaco, Sapienza Universitá di Roma, Piazzale Aldo Moro 5, 00185 Rome, Italy; (L.d.M.); (J.T.); (C.B.); (S.P.); (M.A.C.)
| | - Chiara Brandelli
- Dipartimento di Chimica e Tecnologia del Farmaco, Sapienza Universitá di Roma, Piazzale Aldo Moro 5, 00185 Rome, Italy; (L.d.M.); (J.T.); (C.B.); (S.P.); (M.A.C.)
| | - Patrizia Paolicelli
- Dipartimento di Chimica e Tecnologia del Farmaco, Sapienza Universitá di Roma, Piazzale Aldo Moro 5, 00185 Rome, Italy; (L.d.M.); (J.T.); (C.B.); (S.P.); (M.A.C.)
- Correspondence: (A.A.); (P.P.)
| | - Stefania Petralito
- Dipartimento di Chimica e Tecnologia del Farmaco, Sapienza Universitá di Roma, Piazzale Aldo Moro 5, 00185 Rome, Italy; (L.d.M.); (J.T.); (C.B.); (S.P.); (M.A.C.)
| | - Maria Antonietta Casadei
- Dipartimento di Chimica e Tecnologia del Farmaco, Sapienza Universitá di Roma, Piazzale Aldo Moro 5, 00185 Rome, Italy; (L.d.M.); (J.T.); (C.B.); (S.P.); (M.A.C.)
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Petralito S, Paolicelli P, Nardoni M, Tedesco A, Trilli J, Di Muzio L, Cesa S, Casadei MA, Adrover A. Gelation of the internal core of liposomes as a strategy for stabilization and modified drug delivery II. Theoretical analysis and modelling of in-vitro release experiments. Int J Pharm 2020; 585:119471. [PMID: 32479896 DOI: 10.1016/j.ijpharm.2020.119471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 05/20/2020] [Accepted: 05/23/2020] [Indexed: 10/24/2022]
Abstract
PEG-DMA was incorporated in unilamellar liposomes. PEG-DMA crosslinking by photo-induced radical reaction transforms the liquid aqueous core of the liposome into a hydrogel. The molecular weight of PEG-DMA significantly influences both structural and release properties of these hybrid nanosystems, by affecting both membrane permeability and diffusional properties of the inner core. Release studies of 5-(6) carboxyfluorescein from Conventional Liposomes (CL) and Gel-in-Liposome (GiL) systems were carried out in a vertical Franz Diffusion Cell. A detailed transport model is proposed, aimed at describing the entire drug diffusive pathway from the vesicles' inner core, through the double-layer membrane, into the buffer solution in the donor chamber of the Franz Cell and from there to the receptor chamber, where withdrawals are performed to evaluate the released drug concentration. The model permits to give a quantitative estimate of the diffusional resistances offered by the inner core (liquid or gelled) and by the double-layer membrane for CLs and different GiLs systems. The theoretical analysis of experimental release data strongly supports the basic assumption that, by varying the molecular weight of PEG-DMA, a different arrangement of the polymer within the liposomal structure and a different interaction with the membrane occur. PEG750-DMA decreases the transport resistance of the double layer membrane with respect to CLs, while PEG4000-DMA plays the opposite role. After gelation of the internal core, the diffusional resistance to drug transport inside GiLs becomes controlling, thus significantly slowing down drug release from these systems. Therefore, the combination of PEG-DMA with phospholipid vesicles appears an interesting strategy to develop sustained drug delivery systems.
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Affiliation(s)
- Stefania Petralito
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Patrizia Paolicelli
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, Piazzale Aldo Moro 5, 00185 Rome, Italy.
| | - Martina Nardoni
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Andrea Tedesco
- Dipartimento di Ingegneria Chimica, Materiali e Ambiente, Sapienza Università di Roma, Via Eudossiana 18, 00184 Rome, Italy
| | - Jordan Trilli
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Laura Di Muzio
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Stefania Cesa
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Maria Antonietta Casadei
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Alessandra Adrover
- Dipartimento di Ingegneria Chimica, Materiali e Ambiente, Sapienza Università di Roma, Via Eudossiana 18, 00184 Rome, Italy
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Pacelli S, Paolicelli P, Petralito S, Subham S, Gilmore D, Varani G, Yang G, Lin D, Casadei MA, Paul A. Investigating the Role of Polydopamine to Modulate Stem Cell Adhesion and Proliferation on Gellan Gum-Based Hydrogels. ACS Appl Bio Mater 2020; 3:945-951. [DOI: 10.1021/acsabm.9b00989] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Settimio Pacelli
- Department of Chemical and Petroleum Engineering, BioIntel Research Laboratory, University of Kansas, Lawrence, Kansas 66045, United States
| | - Patrizia Paolicelli
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185, Rome, Italy
| | - Stefania Petralito
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185, Rome, Italy
| | - Siddharth Subham
- Department of Chemical and Petroleum Engineering, BioIntel Research Laboratory, University of Kansas, Lawrence, Kansas 66045, United States
| | - Drake Gilmore
- Department of Chemical and Petroleum Engineering, BioIntel Research Laboratory, University of Kansas, Lawrence, Kansas 66045, United States
| | - Gabriele Varani
- CNR National Research Council of Italy, IEIIT Institute, Via de Marini 6, 16149, Genoa, Italy
| | - Guang Yang
- Department of Industrial and Manufacturing Systems Engineering, Kansas State University, 2080 Rathbone Hall, 1701 D Platt Street, Manhattan, Kansas 66506, United States
| | - Dong Lin
- Department of Industrial and Manufacturing Systems Engineering, Kansas State University, 2080 Rathbone Hall, 1701 D Platt Street, Manhattan, Kansas 66506, United States
| | - Maria Antonietta Casadei
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185, Rome, Italy
| | - Arghya Paul
- Department of Chemical and Biochemical Engineering and Department of Chemistry, The University of Western Ontario, London, ON N6A 5B9, Canada
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Adrover A, Paolicelli P, Petralito S, Di Muzio L, Trilli J, Cesa S, Tho I, Casadei MA. Gellan Gum/Laponite Beads for the Modified Release of Drugs: Experimental and Modeling Study of Gastrointestinal Release. Pharmaceutics 2019; 11:E187. [PMID: 30999609 PMCID: PMC6523394 DOI: 10.3390/pharmaceutics11040187] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 04/03/2019] [Accepted: 04/11/2019] [Indexed: 11/23/2022] Open
Abstract
In this study, gellan gum (GG), a natural polysaccharide, was used to fabricate spherical porous beads suitable as sustained drug delivery systems for oral administration. GG was cross-linked with calcium ions to prepare polymeric beads. Rheological studies and preliminary experiments of beads preparation allowed to identify the GG and the CaCl2 concentrations suitable for obtaining stable and spherical particles. GG beads were formed, through ionotropic gelation technique, with and without the presence of the synthetic clay laponite. The resultant beads were analyzed for dimensions (before and after freeze-drying), morphological aspects and ability to swell in different media miming biological fluids, namely SGF (Simulated Gastric Fluid, HCl 0.1 M) and SIF (Simulated Intestinal Fluid, phosphate buffer, 0.044 M, pH 7.4). The swelling degree was lower in SGF than in SIF and further reduced in the presence of laponite. The GG and GG-layered silicate composite beads were loaded with two model drugs having different molecular weight, namely theophylline and cyanocobalamin (vitamin B12) and subjected to in-vitro release studies in SGF and SIF. The presence of laponite in the bead formulation increased the drug entrapment efficiency and slowed-down the release kinetics of both drugs in the gastric environment. A moving-boundary swelling model with "diffuse" glassy-rubbery interface was proposed in order to describe the swelling behavior of porous freeze-dried beads. Consistently with the swelling model adopted, two moving-boundary drug release models were developed to interpret release data from highly porous beads of different drugs: drug molecules, e.g., theophylline, that exhibit a typical Fickian behavior of release curves and drugs, such as vitamin B12, whose release curves are affected by the physical/chemical interaction of the drug with the polymer/clay complex. Theoretical results support the experimental observations, thus confirming that laponite may be an effective additive for fabricating sustained drug delivery systems.
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Affiliation(s)
- Alessandra Adrover
- Dipartimento di Ingegneria Chimica, Materiali e Ambiente, Sapienza Universitá di Roma, Via Eudossiana 18, 00184 Rome, Italy.
| | - Patrizia Paolicelli
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Universitá di Roma, Piazzale Aldo Moro 5, 00185 Rome, Italy.
| | - Stefania Petralito
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Universitá di Roma, Piazzale Aldo Moro 5, 00185 Rome, Italy.
| | - Laura Di Muzio
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Universitá di Roma, Piazzale Aldo Moro 5, 00185 Rome, Italy.
| | - Jordan Trilli
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Universitá di Roma, Piazzale Aldo Moro 5, 00185 Rome, Italy.
| | - Stefania Cesa
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Universitá di Roma, Piazzale Aldo Moro 5, 00185 Rome, Italy.
| | - Ingunn Tho
- Department of Pharmacy, University of Oslo, 0316 Oslo, Norway.
| | - Maria Antonietta Casadei
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Universitá di Roma, Piazzale Aldo Moro 5, 00185 Rome, Italy.
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Di Sotto A, Paolicelli P, Nardoni M, Abete L, Garzoli S, Di Giacomo S, Mazzanti G, Casadei MA, Petralito S. SPC Liposomes as Possible Delivery Systems for Improving Bioavailability of the Natural Sesquiterpene β-Caryophyllene: Lamellarity and Drug-Loading as Key Features for a Rational Drug Delivery Design. Pharmaceutics 2018; 10:pharmaceutics10040274. [PMID: 30551617 PMCID: PMC6321237 DOI: 10.3390/pharmaceutics10040274] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 12/07/2018] [Accepted: 12/11/2018] [Indexed: 02/06/2023] Open
Abstract
The natural sesquiterpene β-caryophyllene (CRY) has been highlighted to possess interesting pharmacological potentials, particularly due to its chemopreventive and analgesic properties. However, the poor solubility of this sesquiterpene in aqueous fluids can hinder its uptake into cells, resulting in inconstant responses of biological systems, thus limiting its application. Therefore, identifying a suitable pharmaceutical form for increasing CRY bioavailability represents an important requirement for exploiting its pharmacological potential. In the present study, the ability of soybean phosphatidylcholine (SPC) liposomes to improve bioavailability and absorption of CRY in cancer cells has been evaluated. Liposomal formulations of CRY, differing for lamellarity (i.e., unilamellar and multilamellar vesicles or ULV and MLV) and for the drug loading (i.e., 1:0.1, 1:0.3 and 1:0.5 mol/mol between SPC and CRY) were designed with the aim of maximizing CRY amount in the liposome bilayer, while avoiding its leakage during storage. The low-loaded formulations significantly potentiated the antiproliferative activity of CRY in both HepG2 and MDA-MB-468 cells, reaching a maximum IC50 lowering (from two to five folds) with 1:0.3 and 1:0.1 SPC/CRY MLV. Conversely, increasing liposome drug-loading reduced the ability for CRY release, likely due to a possible interaction between SPC and CRY that affects the membrane properties, as confirmed by physical measures.
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Affiliation(s)
- Antonella Di Sotto
- Department of Physiology and Pharmacology "V. Erspamer", Sapienza University of Rome, P.le Aldo Moro 5, 00185 Rome, Italy.
| | - Patrizia Paolicelli
- Department of Chemistry and Technology of Drugs, Sapienza University of Rome, P.le Aldo Moro 5, 00185 Rome, Italy.
| | - Martina Nardoni
- Department of Chemistry and Technology of Drugs, Sapienza University of Rome, P.le Aldo Moro 5, 00185 Rome, Italy.
| | - Lorena Abete
- Department of Physiology and Pharmacology "V. Erspamer", Sapienza University of Rome, P.le Aldo Moro 5, 00185 Rome, Italy.
| | - Stefania Garzoli
- Department of Chemistry and Technology of Drugs, Sapienza University of Rome, P.le Aldo Moro 5, 00185 Rome, Italy.
| | - Silvia Di Giacomo
- Department of Physiology and Pharmacology "V. Erspamer", Sapienza University of Rome, P.le Aldo Moro 5, 00185 Rome, Italy.
| | - Gabriela Mazzanti
- Department of Physiology and Pharmacology "V. Erspamer", Sapienza University of Rome, P.le Aldo Moro 5, 00185 Rome, Italy.
| | - Maria Antonietta Casadei
- Department of Chemistry and Technology of Drugs, Sapienza University of Rome, P.le Aldo Moro 5, 00185 Rome, Italy.
| | - Stefania Petralito
- Department of Chemistry and Technology of Drugs, Sapienza University of Rome, P.le Aldo Moro 5, 00185 Rome, Italy.
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Adrover A, Varani G, Paolicelli P, Petralito S, Di Muzio L, Casadei MA, Tho I. Experimental and Modeling Study of Drug Release from HPMC-Based Erodible Oral Thin Films. Pharmaceutics 2018; 10:pharmaceutics10040222. [PMID: 30423941 PMCID: PMC6320981 DOI: 10.3390/pharmaceutics10040222] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 10/31/2018] [Accepted: 11/05/2018] [Indexed: 12/13/2022] Open
Abstract
In this work hydroxypropyl methylcellulose (HPMC) fast-dissolving thin films for oral administration are investigated. Furosemide (Class IV of the Biopharmaceutical Classification System) has been used as a model drug for in vitro release tests using three different set-ups: the Franz cell, the millifluidic flow-through device, and the paddle type dissolution apparatus (USP II). In order to enable drug incorporation within HPMC films, a multifunctional excipient, hydroxypropyl-β-cyclodextrin (HP-β-CD) has been included in the formulation, and the influence of HP-β-CD on film swelling, erosion, and release properties has been investigated. Mathematical models capable of describing the swelling and release processes from HPMC erodible thin films in different apparatuses have been developed. In particular, we propose a new model for the description of drug transport and release in a Franz cell that accounts for the effect of the unavoidable imperfect mixing of the receptor chamber.
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Affiliation(s)
- Alessandra Adrover
- Dipartimento di Ingegneria Chimica, Materiali e Ambiente, Sapienza Universitá di Roma, Via Eudossiana 18, 00184 Rome, Italy.
| | - Gabriele Varani
- Dipartimento di Ingegneria Chimica, Materiali e Ambiente, Sapienza Universitá di Roma, Via Eudossiana 18, 00184 Rome, Italy.
| | - Patrizia Paolicelli
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Universitá di Roma, Piazzale Aldo Moro 5, 00185 Rome, Italy.
| | - Stefania Petralito
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Universitá di Roma, Piazzale Aldo Moro 5, 00185 Rome, Italy.
| | - Laura Di Muzio
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Universitá di Roma, Piazzale Aldo Moro 5, 00185 Rome, Italy.
| | - Maria Antonietta Casadei
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Universitá di Roma, Piazzale Aldo Moro 5, 00185 Rome, Italy.
| | - Ingunn Tho
- Section of Pharmaceutics and Social Pharmacy, Department of Pharmacy, Faculty of Mathematics and Natural Sciences, University of Oslo, 0316 Oslo, Norway.
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Pacelli S, Paolicelli P, Avitabile M, Varani G, Di Muzio L, Cesa S, Tirillò J, Bartuli C, Nardoni M, Petralito S, Adrover A, Casadei MA. Design of a tunable nanocomposite double network hydrogel based on gellan gum for drug delivery applications. Eur Polym J 2018. [DOI: 10.1016/j.eurpolymj.2018.04.034] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Nardoni M, della Valle E, Liberti M, Relucenti M, Casadei MA, Paolicelli P, Apollonio F, Petralito S. Can Pulsed Electromagnetic Fields Trigger On-Demand Drug Release from High-Tm Magnetoliposomes? Nanomaterials (Basel) 2018; 8:nano8040196. [PMID: 29584700 PMCID: PMC5923526 DOI: 10.3390/nano8040196] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Revised: 03/22/2018] [Accepted: 03/23/2018] [Indexed: 01/18/2023]
Abstract
Recently, magnetic nanoparticles (MNPs) have been used to trigger drug release from magnetoliposomes through a magneto-nanomechanical approach, where the mechanical actuation of the MNPs is used to enhance the membrane permeability. This result can be effectively achieved with low intensity non-thermal alternating magnetic field (AMF), which, however, found rare clinic application. Therefore, a different modality of generating non-thermal magnetic fields has now been investigated. Specifically, the ability of the intermittent signals generated by non-thermal pulsed electromagnetic fields (PEMFS) were used to verify if, once applied to high-transition temperature magnetoliposomes (high-Tm MLs), they could be able to efficiently trigger the release of a hydrophilic model drug. To this end, hydrophilic MNPs were combined with hydrogenated soybean phosphatidylcholine and cholesterol to design high-Tm MLs. The release of a dye was evaluated under the effect of PEMFs for different times. The MNPs motions produced by PEMF could effectively increase the bilayer permeability, without affecting the liposomes integrity and resulted in nearly 20% of release after 3 h exposure. Therefore, the current contribution provides an exciting proof-of-concept for the ability of PEMFS to trigger drug release, considering that PEMFS find already application in therapy due to their anti-inflammatory effects.
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Affiliation(s)
- Martina Nardoni
- Department of Drug Chemistry and Technologies, “Sapienza” University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy; (M.N.); (M.A.C.); (P.P.)
| | - Elena della Valle
- Department of Information Engineering, Electronics and Telecommunications (DIET), “Sapienza” University of Rome, Via Eudossiana 18, 00184 Rome, Italy; (E.d.V.); (M.L.); (F.A.)
| | - Micaela Liberti
- Department of Information Engineering, Electronics and Telecommunications (DIET), “Sapienza” University of Rome, Via Eudossiana 18, 00184 Rome, Italy; (E.d.V.); (M.L.); (F.A.)
| | - Michela Relucenti
- Department of Anatomical, Histological, Forensic Medicine and Orthopedic Science, “Sapienza” University of Rome, Via A. Borelli 50, 00161 Rome, Italy;
| | - Maria Antonietta Casadei
- Department of Drug Chemistry and Technologies, “Sapienza” University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy; (M.N.); (M.A.C.); (P.P.)
| | - Patrizia Paolicelli
- Department of Drug Chemistry and Technologies, “Sapienza” University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy; (M.N.); (M.A.C.); (P.P.)
| | - Francesca Apollonio
- Department of Information Engineering, Electronics and Telecommunications (DIET), “Sapienza” University of Rome, Via Eudossiana 18, 00184 Rome, Italy; (E.d.V.); (M.L.); (F.A.)
| | - Stefania Petralito
- Department of Drug Chemistry and Technologies, “Sapienza” University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy; (M.N.); (M.A.C.); (P.P.)
- Correspondence: ; Tel.: +39-06-49363265
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Paolicelli P, Varani G, Pacelli S, Ogliani E, Nardoni M, Petralito S, Adrover A, Casadei MA. DESIGN AND CHARACTERIZATION OF A BIOCOMPATIBLE PHYSICAL HYDROGEL BASED ON SCLEROGLUCAN FOR TOPICAL DRUG DELIVERY. Carbohydr Polym 2017; 174:960-969. [DOI: 10.1016/j.carbpol.2017.07.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Revised: 06/14/2017] [Accepted: 07/04/2017] [Indexed: 10/19/2022]
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Alhaique F, Casadei MA, Cencetti C, Coviello T, Di Meo C, Matricardi P, Montanari E, Pacelli S, Paolicelli P. From macro to nano polysaccharide hydrogels: An opportunity for the delivery of drugs. J Drug Deliv Sci Technol 2016. [DOI: 10.1016/j.jddst.2015.09.018] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Pacelli S, Paolicelli P, Moretti G, Petralito S, Di Giacomo S, Vitalone A, Casadei MA. Gellan gum methacrylate and laponite as an innovative nanocomposite hydrogel for biomedical applications. Eur Polym J 2016. [DOI: 10.1016/j.eurpolymj.2016.02.007] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Pacelli S, Paolicelli P, Casadei MA. New biodegradable dextran-based hydrogels for protein delivery: Synthesis and characterization. Carbohydr Polym 2015; 126:208-14. [DOI: 10.1016/j.carbpol.2015.03.016] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Revised: 02/23/2015] [Accepted: 03/09/2015] [Indexed: 10/23/2022]
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Casadei MA, Cesa S, Pacelli S, Paolicelli P, Tita B, Vitali F. Dextran-based hydrogel microspheres obtained in w/o emulsion: preparation, characterisation andin vivostudies. J Microencapsul 2014; 31:440-7. [DOI: 10.3109/02652048.2013.871360] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Pacelli S, Paolicelli P, Pepi F, Garzoli S, Polini A, Tita B, Vitalone A, Casadei MA. Gellan gum and polyethylene glycol dimethacrylate double network hydrogels with improved mechanical properties. J Polym Res 2014. [DOI: 10.1007/s10965-014-0409-4] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Petralito S, Spera R, Pacelli S, Relucenti M, Familiari G, Vitalone A, Paolicelli P, Casadei MA. Design and development of PEG-DMA gel-in-liposomes as a new tool for drug delivery. REACT FUNCT POLYM 2014. [DOI: 10.1016/j.reactfunctpolym.2014.02.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Cerreto A, Corrente F, Botta B, Pacelli S, Paolicelli P, Mannina L, Casadei MA. NMR Characterization of Carboxymethyl Scleroglucan. International Journal of Polymer Analysis and Characterization 2013. [DOI: 10.1080/1023666x.2013.842286] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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López-Cebral R, Paolicelli P, Romero-Caamaño V, Seijo B, Casadei MA, Sanchez A. Spermidine-Cross-linked Hydrogels as Novel Potential Platforms for Pharmaceutical Applications. J Pharm Sci 2013; 102:2632-43. [DOI: 10.1002/jps.23631] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2013] [Revised: 05/08/2013] [Accepted: 05/14/2013] [Indexed: 01/25/2023]
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Cerreto F, Paolicelli P, Cesa S, Amara HMA, D’Auria FD, Simonetti G, Casadei MA. Solid lipid nanoparticles as effective reservoir systems for long-term preservation of multidose formulations. AAPS PharmSciTech 2013; 14:847-53. [PMID: 23625652 DOI: 10.1208/s12249-013-9972-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2013] [Accepted: 04/16/2013] [Indexed: 11/30/2022] Open
Abstract
Cosmetic multidose preparations, as well as pharmaceutical ones, are at risk of contamination by microorganisms, due to their high water content. Besides the risk of contamination during manufacturing, multidose cosmetic preparations may be contaminated by consumers during their use. In this paper, the results of the utilization of nanoparticles as reservoir systems of parabens, the most used class of preservatives, were reported. Two different systems, solid lipid nanoparticles (SLN) made of pure precirol and nanostructured lipid carriers (NLC) made of precirol and almond oil, containing three parabens as single molecules or as a mixture, were prepared and tested. All the systems were characterized for size, polydispersion index, zeta potential and encapsulation efficiency. Release experiments, carried out in steady state and sink conditions, allowed to evidence that both SLN and NLC were able to act as reservoir systems. The antimicrobial activity of the systems was tested against Candida albicans ATCC 10231 with repeat insult tests. The results of the release experiments and the antimicrobial tests showed very low water concentration of parabens still maintaining their antimicrobial activity.
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Corrente F, Abu Amara HM, Pacelli S, Paolicelli P, Casadei MA. Novel injectable and in situ cross-linkable hydrogels of dextran methacrylate and scleroglucan derivatives: Preparation and characterization. Carbohydr Polym 2013; 92:1033-9. [DOI: 10.1016/j.carbpol.2012.10.018] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2012] [Revised: 09/20/2012] [Accepted: 10/06/2012] [Indexed: 11/16/2022]
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Corrente F, Paolicelli P, Matricardi P, Tita B, Vitali F, Casadei MA. Novel pH-Sensitive Physical Hydrogels of Carboxymethyl Scleroglucan. J Pharm Sci 2012; 101:256-67. [DOI: 10.1002/jps.22766] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2011] [Revised: 07/04/2011] [Accepted: 09/01/2011] [Indexed: 02/03/2023]
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Corrente F, Matricardi P, Paolicelli P, Tita B, Vitali F, Casadei MA. Physical carboxymethylscleroglucan/calcium ion hydrogels as modified drug delivery systems in topical formulations. Molecules 2009; 14:2684-98. [PMID: 19701116 PMCID: PMC6255100 DOI: 10.3390/molecules14082684] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2009] [Revised: 07/16/2009] [Accepted: 07/21/2009] [Indexed: 11/16/2022] Open
Abstract
A carboxymethyl derivative of scleroglucan (Scl-CM) with a 65±5% carboxylic group degree of derivatization (DD) was recently synthesized and characterized. Aqueous solutions of the polymer underwent to a sharp transition toward a gel like behaviour in the presence of divalent ions such as Ca+2. Physical hydrogels with different Scl-CM/Ca+2 ratios were prepared and characterized for their rheological behaviour. Their potential as drug delivery systems was also evaluated. To this end three non steroidal anti-inflammatory drugs (NSAIDs) were loaded into the hydrogels obtained with 2% w/v solution of Scl-CM and 0.05 and 0.1 M CaCl2. The release rate of the drugs was critically related to the salt concentration. By an appropriate combination of the hydrogels prepared using different amounts of salt, it was possible to obtain a system able to release diclofenac with zero-order kinetics. Primary skin irritation tests showed a good biocompatibility of the new polymer, as well as of its hydrogels. These results suggest a potential of the new hydrogels for the development of modified delivery systems in topical formulations.
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Affiliation(s)
- Federica Corrente
- Dipartimento di Chimica e Tecnologie del Farmaco, “Sapienza” Università di Roma, Piazzale Aldo Moro 5, 00185, Rome, Italy
| | - Pietro Matricardi
- Dipartimento di Chimica e Tecnologie del Farmaco, “Sapienza” Università di Roma, Piazzale Aldo Moro 5, 00185, Rome, Italy
| | - Patrizia Paolicelli
- Dipartimento di Chimica e Tecnologie del Farmaco, “Sapienza” Università di Roma, Piazzale Aldo Moro 5, 00185, Rome, Italy
| | - Beatrice Tita
- Dipartimento di Fisiologia e Farmacologia, “Sapienza” Università di Roma, Piazzale Aldo Moro 5, 00185, Rome, Italy
| | - Federica Vitali
- Dipartimento di Fisiologia e Farmacologia, “Sapienza” Università di Roma, Piazzale Aldo Moro 5, 00185, Rome, Italy
| | - Maria Antonietta Casadei
- Dipartimento di Chimica e Tecnologie del Farmaco, “Sapienza” Università di Roma, Piazzale Aldo Moro 5, 00185, Rome, Italy
- Author to whom correspondence should be addressed; E-mail:
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Scalzo M, Strati M, Casadei MA, Cerreto F, Cesa S. Colorimetric investigation of the reaction between p-phenylendiamine and meta-substituted derivatives of benzene on a model support. J Cosmet Sci 2009; 60:429-436. [PMID: 19691939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Accepted: 02/11/2009] [Indexed: 05/28/2023]
Abstract
The aim of this work was the employment of colorimetric techniques in the analysis of the color formed, on a proteic substrate, by the reaction between p-phenylendiamine and some meta-substituted benzene derivatives in the presence of hydrogen peroxide and in media at different pH values. In particular we investigated the chromatic variations that take place on the substrate in dependence on different reaction conditions. The obtained results show that for each couple of reagents the colorimetric data, namely the reflectance of the formed color, change considerably with the pH of the reaction medium and demonstrate how this parameter can be considered a good descriptor of the composition of the formed pigment.
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Affiliation(s)
- M Scalzo
- Dipartimento di Chimica e Tecnologie del Farmaco, Università di Roma La Sapienza, Piazzale Aldo Moro 5, Rome, Italy
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Paolicelli P, Cerreto F, Cesa S, Feeney M, Corrente F, Marianecci C, Casadei MA. Influence of the formulation components on the properties of the system SLN-dextran hydrogel for the modified release of drugs. J Microencapsul 2009; 26:355-64. [DOI: 10.1080/02652040802372899] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Feeney M, Casadei MA, Matricardi P. Carboxymethyl derivative of scleroglucan: a novel thermosensitive hydrogel forming polysaccharide for drug delivery applications. J Mater Sci Mater Med 2009; 20:1081-1087. [PMID: 19132513 DOI: 10.1007/s10856-008-3665-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2008] [Accepted: 12/09/2008] [Indexed: 05/27/2023]
Abstract
A carboxymethyl derivative of scleroglucan (Scl-CM) with a derivatization degree of 65 +/- 5% was synthesized. The rheological behaviour of this novel polymer was studied and compared with that of the starting polymer. We observed that the charged moieties carried on the chains could prevent the triple helix formation of Scl. Scl-CM aqueous solutions behave like true polymer solutions up to 1% w/v, whereas above this concentration a weak gel behaviour was observed. CaCl(2) addition to aqueous Scl-CM solutions led to a physical gel formation; the hydrogel strength was related to polymer and CaCl(2) concentrations. Temperature sweeps, registered at 1 Hz on hydrogels differing in CaCl(2) concentration, evidenced a gel --> sol transition in the range of 30-40 degrees C, depending on the molar ratio between carboxylic groups and Ca(+2). In order to verify a possible use of these hydrogels as drug delivery systems, acyclovir was loaded into the network. Rheological analysis evidenced that the loaded drug can affect the hydrogel elastic modulus. The release of acyclovir in phosphate buffer was evaluated at different temperatures in order to assess the suitability of this novel drug delivery system in topical applications.
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Affiliation(s)
- Michelle Feeney
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, Rome, Italy
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Giannuzzo M, Corrente F, Feeney M, Paoletti L, Paolicelli P, Tita B, Vitali F, Casadei MA. pH-Sensitive hydrogels of dextran: Synthesis, characterization andin vivostudies. J Drug Target 2008; 16:649-59. [DOI: 10.1080/10611860802201191] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Abstract
The oral administration of nonsteroidal anti-inflammatory drugs (NSAIDs) is often associated with upper gastrointestinal tract side effects. To reduce these effects and improve the therapeutic efficacy, NSAIDs are often formulated as controlled release systems. We have prepared a new formulation consisting of dextran hydrogels containing NSAIDs as pendant agents, through ultraviolet irradiation of solutions of dextran functionalized with methacrylic groups in the presence of the drug derivatized in the same way. Release studies of different drugs from this system, carried out in media simulating the gastrointestinal tract, have demonstrated that the amount of released drug is strictly related to the concentration of the polymer in the solution submitted to irradiation as well as to its derivatization degree. Our obtained data confirm that the system is able to realize a colon-specific drug delivery.
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Affiliation(s)
- Michelle Feeney
- Dipartimento di Studi di Chimica e Tecnologia delle Sostanze Biologicamente Attive, Università La Sapienza, Roma, Italy
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Matricardi P, Pontoriero M, Coviello T, Casadei MA, Alhaique F. In Situ Cross-Linkable Novel Alginate-Dextran Methacrylate IPN Hydrogels for Biomedical Applications: Mechanical Characterization and Drug Delivery Properties. Biomacromolecules 2008; 9:2014-20. [DOI: 10.1021/bm800252c] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Pietro Matricardi
- Department of Chemistry and Technology of Biologically Active Compounds, Faculty of Pharmacy, “Sapienza” University of Rome, P.le Aldo Moro 5, 00185 Rome, Italy, and Department of Clinical and Experimental Medicine, School of Medicine, University “Magna Graecia” of Catanzaro, v.le Europa Loc.Germaneto, 88100 Catanzaro, Italy
| | - Marilena Pontoriero
- Department of Chemistry and Technology of Biologically Active Compounds, Faculty of Pharmacy, “Sapienza” University of Rome, P.le Aldo Moro 5, 00185 Rome, Italy, and Department of Clinical and Experimental Medicine, School of Medicine, University “Magna Graecia” of Catanzaro, v.le Europa Loc.Germaneto, 88100 Catanzaro, Italy
| | - Tommasina Coviello
- Department of Chemistry and Technology of Biologically Active Compounds, Faculty of Pharmacy, “Sapienza” University of Rome, P.le Aldo Moro 5, 00185 Rome, Italy, and Department of Clinical and Experimental Medicine, School of Medicine, University “Magna Graecia” of Catanzaro, v.le Europa Loc.Germaneto, 88100 Catanzaro, Italy
| | - Maria Antonietta Casadei
- Department of Chemistry and Technology of Biologically Active Compounds, Faculty of Pharmacy, “Sapienza” University of Rome, P.le Aldo Moro 5, 00185 Rome, Italy, and Department of Clinical and Experimental Medicine, School of Medicine, University “Magna Graecia” of Catanzaro, v.le Europa Loc.Germaneto, 88100 Catanzaro, Italy
| | - Franco Alhaique
- Department of Chemistry and Technology of Biologically Active Compounds, Faculty of Pharmacy, “Sapienza” University of Rome, P.le Aldo Moro 5, 00185 Rome, Italy, and Department of Clinical and Experimental Medicine, School of Medicine, University “Magna Graecia” of Catanzaro, v.le Europa Loc.Germaneto, 88100 Catanzaro, Italy
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Casadei MA, Pitarresi G, Calabrese R, Paolicelli P, Giammona G. Biodegradable and pH-Sensitive Hydrogels for Potential Colon-Specific Drug Delivery: Characterization and In Vitro Release Studies. Biomacromolecules 2007; 9:43-9. [DOI: 10.1021/bm700716c] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Maria Antonietta Casadei
- Dipartimento di Studi di Chimica e Tecnologia delle Sostanze Biologicamente Attive, Università “La Sapienza”, Piazzale Aldo Moro 5, 00185 Roma, Italy, and Dipartimento di Chimica e Tecnologie Farmaceutiche, Università di Palermo, via Archirafi 32, 90123, Palermo, Italy
| | - Giovanna Pitarresi
- Dipartimento di Studi di Chimica e Tecnologia delle Sostanze Biologicamente Attive, Università “La Sapienza”, Piazzale Aldo Moro 5, 00185 Roma, Italy, and Dipartimento di Chimica e Tecnologie Farmaceutiche, Università di Palermo, via Archirafi 32, 90123, Palermo, Italy
| | - Rossella Calabrese
- Dipartimento di Studi di Chimica e Tecnologia delle Sostanze Biologicamente Attive, Università “La Sapienza”, Piazzale Aldo Moro 5, 00185 Roma, Italy, and Dipartimento di Chimica e Tecnologie Farmaceutiche, Università di Palermo, via Archirafi 32, 90123, Palermo, Italy
| | - Patrizia Paolicelli
- Dipartimento di Studi di Chimica e Tecnologia delle Sostanze Biologicamente Attive, Università “La Sapienza”, Piazzale Aldo Moro 5, 00185 Roma, Italy, and Dipartimento di Chimica e Tecnologie Farmaceutiche, Università di Palermo, via Archirafi 32, 90123, Palermo, Italy
| | - Gaetano Giammona
- Dipartimento di Studi di Chimica e Tecnologia delle Sostanze Biologicamente Attive, Università “La Sapienza”, Piazzale Aldo Moro 5, 00185 Roma, Italy, and Dipartimento di Chimica e Tecnologie Farmaceutiche, Università di Palermo, via Archirafi 32, 90123, Palermo, Italy
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Casadei MA, Matricardi P, Fabrizi G, Feeney M, Paolicelli P. Physical gels of a carboxymethyl derivative of scleroglucan: Synthesis and characterization. Eur J Pharm Biopharm 2007; 67:682-9. [PMID: 17537623 DOI: 10.1016/j.ejpb.2007.04.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2007] [Revised: 04/02/2007] [Accepted: 04/12/2007] [Indexed: 10/23/2022]
Abstract
A carboxymethyl derivative of scleroglucan (Scl-CM) was synthesized and characterized through FT-IR, 1H NMR and potentiometer titration. Rheological studies allowed evidencing the effect produced by the introduction of the carboxymethyl moiety on the native polymer. The mechanical spectrum of the scleroglucan solution showed a weak gel behaviour, while the derivative one looked like a system near the gel point, that evolved to a gel state depending on the concentration. This difference could be related to conformational changes due to the introduction of the negative charges on the chains. Different concentrations of Ca2+, added to the aqueous solutions of Scl-CM, were able to deeply modify the resulting system, showing a sharp transition toward a gel like behaviour. Acyclovir was loaded into the hydrogels obtained with different amounts of polymer and salt. The release rate of the drug from these systems was strictly related to both concentrations of salt and polymer. The obtained results suggest a possible employment of these new hydrogels for topical formulations or in situ implantation.
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Affiliation(s)
- Maria Antonietta Casadei
- Dipartimento di Studi di Chimica e Tecnologia delle Sostanze Biologicamente Attive, Sapienza Università di Roma, Rome, Italy.
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Pitarresi G, Casadei MA, Mandracchia D, Paolicelli P, Palumbo FS, Giammona G. Photocrosslinking of dextran and polyaspartamide derivatives: A combination suitable for colon-specific drug delivery. J Control Release 2007; 119:328-38. [DOI: 10.1016/j.jconrel.2007.03.005] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2006] [Revised: 02/26/2007] [Accepted: 03/06/2007] [Indexed: 11/27/2022]
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Casadei MA, Cerreto F, Cesa S, Giannuzzo M, Feeney M, Marianecci C, Paolicelli P. Solid lipid nanoparticles incorporated in dextran hydrogels: A new drug delivery system for oral formulations. Int J Pharm 2006; 325:140-6. [PMID: 16846705 DOI: 10.1016/j.ijpharm.2006.06.012] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2006] [Revised: 06/05/2006] [Accepted: 06/06/2006] [Indexed: 12/01/2022]
Abstract
Solid lipid nanoparticles (SLN) containing or not (S)-(+)-2-(4-isobutylphenyl)propionic acid (ibuprofen) were prepared with Preciol ATO 5 as lipid phase by the hot homogenization technique and characterized through particle size analyses and zeta potential measurements. DSC experiments carried out on the freeze-dried samples of loaded SLN showed a shift of the melting endotherm of the lipid phase, with the maximum at a temperature value higher then that of the "empty" SLN. (1)H NMR of the nanosuspension allowed to calculate the encapsulation efficiency of the particles that was 52+/-3%. By adding dextran methacrylate (DEX-MA) to the aqueous phase and submitting the mixture to UV irradiation, systems of SLN (drug-loaded and unloaded) incorporated into a dextran hydrogel were prepared. Finally, dissolution studies of ibuprofen from the freeze-dried samples were performed. The comparison among the release profiles of ibuprofen from SLN, DEX-MA hydrogel and SLN/DEX-MA-hydrogel allows to affirm that this last system, retaining about 60% of the drug after 2h in acid medium and releasing it slowly in neutral solution, is suitable for modified delivery oral formulations.
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Affiliation(s)
- Maria Antonietta Casadei
- Dipartimento di Studi di Chimica e Tecnologia delle Sostanze Biologicamente Attive, Università La Sapienza, 00185 Rome, Italy.
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Pitarresi G, Palumbo FS, Giammona G, Casadei MA, Micheletti Moracci F. Biodegradable hydrogels obtained by photocrosslinking of dextran and polyaspartamide derivatives. Biomaterials 2003; 24:4301-13. [PMID: 12853261 DOI: 10.1016/s0142-9612(03)00332-6] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
The functionalization of dextran with glycidyl methacrylate (GMA) leads to the formation of a derivative that generates hydrogels for irradiation at 365nm. The effects of various polymer concentrations and irradiation times on the yield and the properties of the obtained hydrogels are reported. The networks have been characterized by FT-IR spectra, dimensional analysis and swelling measurements carried out at different pH values. In vitro studies suggest that all samples undergo a partial chemical hydrolysis, whereas the incubation with dextranases causes a total degradation whose rate depends on the degree of crosslinking. In addition, aqueous solutions of functionalized dextran have been irradiated in the presence of PHG (PHEA-GMA), i.e. the copolymer obtained by the reaction of alpha,beta-poly(N-2-hydroxyethyl)-DL-aspartamide (PHEA) with GMA. The crosslinking reaction leads to the formation of new networks containing both polymers whose properties have been investigated. To evaluate the processes which occur during UV irradiation, the sol fractions have been purified and characterized by FT-IR and 1H-NMR analyses. Finally, the suitability of hydrogels deriving from functionalized dextran, crosslinked alone or in the presence of PHG, for drug delivery systems has been investigated choosing theophylline as a model drug.
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Affiliation(s)
- G Pitarresi
- Dipartimento di Chimica e Tecnologie Farmaceutiche, Università di Palermo, Via Archirafi 32, 90123, Palermo, Italy.
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Feroci M, Casadei MA, Orsini M, Palombi L, Inesi A. Cyanomethyl anion/carbon dioxide system: an electrogenerated carboxylating reagent. Synthesis of carbamates under mild and safe conditions. J Org Chem 2003; 68:1548-51. [PMID: 12585900 DOI: 10.1021/jo0266036] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A new carboxylating reagent ((-)CH(2)CN/CO(2)) was obtained by bubbling CO(2) in a CH(3)CN-TEAP (tetraethylammonium perchlorate) solution previously electrolyzed under galvanostatic control. Organic carbamates were isolated from these solutions after addition of amines and an alkylating agent. In this paper, we describe the optimized conditions for the electrochemical synthesis of carbamates from amines and CO(2), in mild and safe conditions, without any addition of bases, probases, or catalysts. Carbamates were isolated from primary and secondary aliphatic amines in high to excellent yields and from aromatic amines in moderate yields (dependent on the nucleophilicity of the nitrogen atom).
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Affiliation(s)
- Marta Feroci
- Dip. Ingegneria Chimica, Materiali, Materie Prime e Metallurgia, Università La Sapienza, via Castro Laurenziano, 7, I-00161 Roma, Italy.
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Casadei MA, Mañas P, Niven G, Needs E, Mackey BM. Role of membrane fluidity in pressure resistance of Escherichia coli NCTC 8164. Appl Environ Microbiol 2002; 68:5965-72. [PMID: 12450817 PMCID: PMC134404 DOI: 10.1128/aem.68.12.5965-5972.2002] [Citation(s) in RCA: 148] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2002] [Accepted: 09/16/2002] [Indexed: 11/20/2022] Open
Abstract
The relationship among growth temperature, membrane fatty acid composition, and pressure resistance was examined in Escherichia coli NCTC 8164. The pressure resistance of exponential-phase cells was maximal in cells grown at 10 degrees C and decreased with increasing growth temperatures up to 45 degrees C. By contrast, the pressure resistance of stationary-phase cells was lowest in cells grown at 10 degrees C and increased with increasing growth temperature, reaching a maximum at 30 to 37 degrees C before decreasing at 45 degrees C. The proportion of unsaturated fatty acids in the membrane lipids decreased with increasing growth temperature in both exponential- and stationary-phase cells and correlated closely with the melting point of the phospholipids extracted from whole cells examined by differential scanning calorimetry. Therefore, in exponential-phase cells, pressure resistance increased with greater membrane fluidity, whereas in stationary-phase cells, there was apparently no simple relationship between membrane fluidity and pressure resistance. When exponential-phase or stationary-phase cells were pressure treated at different temperatures, resistance in both cell types increased with increasing temperatures of pressurization (between 10 and 30 degrees C). Based on the above observations, we propose that membrane fluidity affects the pressure resistance of exponential- and stationary-phase cells in a similar way, but it is the dominant factor in exponential-phase cells whereas in stationary-phase cells, its effects are superimposed on a separate but larger effect of the physiological stationary-phase response that is itself temperature dependent.
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Affiliation(s)
- M A Casadei
- School of Food Biosciences, University of Reading, Whiteknights, United Kingdom
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Casadei MA, Galli C, Mandolini L. Ring-closure reactions. 18. Application of the malonic ester synthesis to the preparation of many-membered carbocyclic rings. J Org Chem 2002. [DOI: 10.1021/jo00328a030] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Casadei MA, Galli C, Mandolini L. Ring-closure reactions. 22. Kinetics of cyclization of diethyl (.omega.-bromoalkyl)malonates in the range of 4- to 21-membered rings. Role of ring strain. J Am Chem Soc 2002. [DOI: 10.1021/ja00316a039] [Citation(s) in RCA: 117] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Abstract
The efficacy of different organic acids in decreasing the heat resistance of Paenibacillus polymyxa spores was assessed. The relationship between concentration of the undissociated form of different organic acids and decrease in heat resistance was also investigated. The heat resistance of P. polymyxa spores was tested in distilled water at 85, 90 and 95 degrees C, at pH4 and in the presence of 50, 100 and 200 mmol l(-1) of the undissociated form of lactic, citric or acetic acid and sodium citrate or acetate. The undissociated form of organic acids was responsible for increasing the heat sensitivity of spores. The most effective acid was lactic acid. The D values of the spores decreased rapidly (between 74 and 43%) in the presence of 50 mmol l(-1) of the undissociated form of organic acid, and increasing concentrations of these forms affected the heat resistance of spores less than proportionally. The heat resistance of the spores in milk was approximately threefold lower than in distilled water. This work has shown that the undissociated fraction of organic acids increases, albeit non-linearly, the sensitivity of spores to heat, even in complex substrates such as milk. By knowing the amount of organic acids added to a given substrate, their dissociation constants and the final pH, it could be possible to estimate the concentration of undissociated forms and the corresponding increase in lethality of heat treatments. This would help the food industry to maximize the lethality achieved by heat processes and/or safely reduce the heat treatments already in use.
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Affiliation(s)
- M A Casadei
- Campden & Chorleywood Food Research Association, Chipping Campden, UK.
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Antonietta Casadei M, Cesa S, Feroci M, Inesi A. Facile stereoselective conversion of 1,2-diols into alkane-1,2-diyl carbonates. NEW J CHEM 1999. [DOI: 10.1039/a900781d] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Abstract
Listeria monocytogenes strains 1151 and Scott A were grown in broth at 30 degrees C and transferred to half cream, double cream and butter stored at 5 degrees C to determine the influence of dairy product composition on heat resistance at 52, 56, 60, 64 and 68 degrees C. Strain 1151 showed a higher heat resistance than strain Scott A. The heat resistance of both strains was higher in the dairy products than in broth, particularly at lower temperatures. A significant difference was observed between log 10 of the D-values in the different dairy products. The D-values obtained for both strains resuspended in all the dairy products would result in efficient elimination of the pathogen at 72.7 degrees C for 15 s. The highest D-value was 11.30 s at 68 degrees C and by using a z-value of 6.71 degrees C it can be determined that at 72.7 degrees C the D-value would be 1.5 s. The 15 s process would therefore achieve 10 log reductions. The effect of growth conditions on the heat resistance at 60 degrees C of L. monocytogenes Scott A was also investigated. When the cells were grown in the diary products themselves, and particularly butter, the heat resistance of Scott A was enhanced; for example, the D-values were 7.15 times higher than in broth. Further studies are required to investigate if this protection against heating exists at higher temperatures, in which case the efficiency of pasteurization treatments or other heat treatments would be considerably lowered.
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Affiliation(s)
- M A Casadei
- Campden & Chorleywood Food Research Association, Chipping Campden, Gloucestershire, UK
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50
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Abstract
Exponential phase cells of Escherichia coli NCTC 8164 that were centrifuged at 2000 g for 20 min at 4 degrees C were more resistant to subsequent pressure treatment than cells grown in trypticase soya broth (TSB) and treated without any centrifugation steps. The effects of mild pressure stress (200 kPa for 20 min) and temperature stress (a shift from 37 degrees C to 4 degrees C) involved in the centrifugation procedure were analysed separately. It appeared that the increase in pressure resistance obtained following centrifugation was mainly due to the gradual temperature decrease during centrifugation, while the mild pressure stress seemed to play a smaller role in the response.
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