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Mitsuhashi K, Inagaki NF, Ito T. Moldable Tissue-Sealant Hydrogels Composed of In Situ Cross-Linkable Polyethylene Glycol via Thiol-Michael Addition and Carbomers. ACS Biomater Sci Eng 2024; 10:3343-3354. [PMID: 38695560 DOI: 10.1021/acsbiomaterials.3c01755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2024]
Abstract
Moldable tissue-sealant hydrogels were developed herein by combining the yield stress fluidity of a Carbomer and in situ cross-linking of 3-arm PEG-thiol (PEG-SH) and 4-arm PEG-acrylate (PEG-AC). The Carbomer was mixed with each PEG oligomer to form two aqueous precursors: Carbomer/PEG-SH and Carbomer/PEG-AC. The two hydrogel precursors exhibited sufficient yield stress (>100 Pa) to prevent dripping from their placement on the tissue surface. Moreover, these hydrogel precursors exhibited rapid restructuring when the shear strain was repeatedly changed. These rheological properties contribute to the moldability of these hydrogel precursors. After mixing these two precursors, they were converted from yield-stress fluids to chemically cross-linked hydrogels, Carbomer/PEG hydrogel, via thiol-Michael addition. The gelation time was 5.0 and 11.2 min at 37 and 25 °C, respectively. In addition, the Carbomer/PEG hydrogels exhibited higher cellular viability than the pure Carbomer. They also showed stable adhesiveness and burst pressure resistance to various tissues, such as the skin, stomach, colon, and cecum of pigs. The hydrogels showed excellent tissue sealing in a cecum ligation and puncture model in mice and improved the survival rate due to their tissue adhesiveness and biocompatibility. The Carbomer/PEG hydrogel is a potential biocompatible tissue sealant that surgeons can mold. It was revealed that the combination of in situ cross-linkable PEG oligomers and yield stress fluid such as Carbomer is effective for developing the moldable tissue sealant without dripping of its hydrogel precursors.
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Affiliation(s)
- Kento Mitsuhashi
- Center for Disease Biology and Integrative Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Natsuko F Inagaki
- Center for Disease Biology and Integrative Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
- Department of Chemical System Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Taichi Ito
- Center for Disease Biology and Integrative Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
- Department of Chemical System Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
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2
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Pourtalebi Jahromi L, Rothammer M, Fuhrmann G. Polysaccharide hydrogel platforms as suitable carriers of liposomes and extracellular vesicles for dermal applications. Adv Drug Deliv Rev 2023; 200:115028. [PMID: 37517778 DOI: 10.1016/j.addr.2023.115028] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 06/26/2023] [Accepted: 07/27/2023] [Indexed: 08/01/2023]
Abstract
Lipid-based nanocarriers have been extensively investigated for their application in drug delivery. Particularly, liposomes are now clinically established for treating various diseases such as fungal infections. In contrast, extracellular vesicles (EVs) - small cell-derived nanoparticles involved in cellular communication - have just recently sparked interest as drug carriers but their development is still at the preclinical level. To drive this development further, the methods and technologies exploited in the context of liposome research should be applied in the domain of EVs to facilitate and accelerate their clinical translation. One of the crucial steps for EV-based therapeutics is designing them as proper dosage forms for specific applications. This review offers a comprehensive overview of state-of-the-art polysaccharide-based hydrogel platforms designed for artificial and natural vesicles with application in drug delivery to the skin. We discuss their various physicochemical and biological properties and try to create a sound basis for the optimization of EV-embedded hydrogels as versatile therapeutic avenues.
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Affiliation(s)
- Leila Pourtalebi Jahromi
- Friedrich-Alexander-Universität Erlangen-Nürnberg, Department of Biology, Pharmaceutical Biology, Staudtstr. 5, 91058 Erlangen, Germany
| | - Markus Rothammer
- Friedrich-Alexander-Universität Erlangen-Nürnberg, Department of Biology, Pharmaceutical Biology, Staudtstr. 5, 91058 Erlangen, Germany
| | - Gregor Fuhrmann
- Friedrich-Alexander-Universität Erlangen-Nürnberg, Department of Biology, Pharmaceutical Biology, Staudtstr. 5, 91058 Erlangen, Germany; FAU NeW, Nikolaus-Fiebiger-Str. 10, 91058 Erlangen, Germany.
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3
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Tudu M, Samanta A. Natural polysaccharides: Chemical properties and application in pharmaceutical formulations. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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4
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Vanoli V, Massobrio G, Pizzetti F, Mele A, Rossi F, Castiglione F. Bijels as a Fluid Labyrinth for Drugs: The Effect of Nanoparticles on the Release Kinetics of Ethosuximide and Dimethyl Fumarate. ACS OMEGA 2022; 7:42845-42853. [PMID: 36467913 PMCID: PMC9713867 DOI: 10.1021/acsomega.2c04834] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Accepted: 10/26/2022] [Indexed: 06/17/2023]
Abstract
Bijels (bicontinuous interfacially jammed emulsion gels) raised an increasing interest as biomaterials for controlled drug delivery due to their biphasic nature organized in mesoscopic tortuous domains. Two bijel formulations were prepared and explored as delivery systems for both hydrophilic and lipophilic drugs, ethosuximide and dimethyl fumarate. The two bijel-like structures, based on polymerized ε-caprolactone/water, differ in the stabilizing nanoparticle hydroxyapatite (inorganic) and nanogel-based nanoparticles (organic). Diffusion nuclear magnetic resonance spectroscopy has been used to characterize the bijel structure and the transport behavior of the drug molecules confined within the water/organic interconnected domains. A reduced diffusion coefficient is observed for several concentrations of the drugs and both bijel formulations. Moreover, in vitro release profiles also reveal the effect of the microstructure and drug-nanoparticle interactions.
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Affiliation(s)
- Valeria Vanoli
- Department
of Chemistry, Materials and Chemical Engineering “G. Natta”, Politecnico di Milano, Piazza L. Da Vinci, 32, 20133Milano, Italy
| | - Giovanna Massobrio
- Department
of Chemistry, Materials and Chemical Engineering “G. Natta”, Politecnico di Milano, Piazza L. Da Vinci, 32, 20133Milano, Italy
| | - Fabio Pizzetti
- Department
of Chemistry, Materials and Chemical Engineering “G. Natta”, Politecnico di Milano, Piazza L. Da Vinci, 32, 20133Milano, Italy
| | - Andrea Mele
- Department
of Chemistry, Materials and Chemical Engineering “G. Natta”, Politecnico di Milano, Piazza L. Da Vinci, 32, 20133Milano, Italy
- CNR
Istituto di Chimica del Riconoscimento Molecolare, Via Mancinelli 7, 20131Milan, Italy
| | - Filippo Rossi
- Department
of Chemistry, Materials and Chemical Engineering “G. Natta”, Politecnico di Milano, Piazza L. Da Vinci, 32, 20133Milano, Italy
| | - Franca Castiglione
- Department
of Chemistry, Materials and Chemical Engineering “G. Natta”, Politecnico di Milano, Piazza L. Da Vinci, 32, 20133Milano, Italy
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5
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A Molecular Description of Hydrogel Forming Polymers for Cement-Based Printing Paste Applications. Gels 2022; 8:gels8090592. [PMID: 36135304 PMCID: PMC9498349 DOI: 10.3390/gels8090592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 09/07/2022] [Accepted: 09/08/2022] [Indexed: 11/17/2022] Open
Abstract
This research endeavors to link the physical and chemical characteristics of select polymer hydrogels to differences in printability when used as printing aids in cement-based printing pastes. A variety of experimental probes including differential scanning calorimetry (DSC), NMR-diffusion ordered spectroscopy (DOSY), quasi-elastic neutron scattering (QENS) using neutron backscattering spectroscopy, and X-ray powder diffraction (XRD), along with molecular dynamic simulations, were used. Conjectures based on objective measures of printability and physical and chemical-molecular characteristics of the polymer gels are emerging that should help target printing aid selection and design, and mix formulation. Molecular simulations were shown to link higher hydrogen bond probability and larger radius of gyration to higher viscosity gels. Furthermore, the higher viscosity gels also produced higher elastic properties, as measured by neutron backscattering spectroscopy.
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Yang JN, Yang HH, Niu MS, Zhou H, Yi X, Chang DL, Zhan J, Liu Y. Ultra-light 3D MnO 2-agar network with high and longevous performance for catalytic formaldehyde oxidation. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 830:154818. [PMID: 35341871 DOI: 10.1016/j.scitotenv.2022.154818] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 03/14/2022] [Accepted: 03/21/2022] [Indexed: 06/14/2023]
Abstract
Under the background of indoor air formaldehyde decontamination, a freestanding ultra-light assembly was fabricated via ice-templating approach starting from MnO2 nanoparticles and environmentally benign agar powder. The 3D composite of agar and MnO2 (AM-3D) was comparatively studied with powdered counterparts (including pure MnO2 and mixture of agar and MnO2) and the 3D-structured agar for formaldehyde oxidation, and their physicochemical properties were examined with XRD, ATR, SEM, XPS, isothermal N2 adsorption, ESR, Raman, CO-TPR and O2-TPD. For the single test of formaldehyde oxidation, the AM-3D catalyst exhibited 62.0%-67.0% removal percentage for ~400 mg/m3 formaldehyde, which did not demonstrate significant advantage over the control samples. However, thanks to the porous 3D agar scaffold with large spatial volume that could promote a rapid gas-phase formaldehyde concentration reduction, and the strong interaction between the dispersed MnO2 particles and agar substrate that could afford a large amount of reactive oxygen species to further oxidize the adsorbed formaldehyde, the AM-3D composite was a much better HCHO-to-CO2 converter and possessed much more advantageous stability for repeated cycles of formaldehyde oxidation: even after ten cycles, there was still 41.7% of formaldehyde removed. Furthermore, the viable sunlight irradiation could easily restore the activity of the used AM-3D catalyst back to the level approaching that of the fresh one. Finally, reaction pathways were put forward via the infrared spectroscopic and ion chromatographic investigations on the surface intermediates of the spent materials.
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Affiliation(s)
- Ji-Ning Yang
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Ocean Science and Technology, Dalian University of Technology, Panjin 124221, China
| | - Huan-Huan Yang
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Ocean Science and Technology, Dalian University of Technology, Panjin 124221, China
| | - Ming-Shuang Niu
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Ocean Science and Technology, Dalian University of Technology, Panjin 124221, China
| | - Hao Zhou
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Ocean Science and Technology, Dalian University of Technology, Panjin 124221, China
| | - Xianliang Yi
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Ocean Science and Technology, Dalian University of Technology, Panjin 124221, China
| | - Da-Lei Chang
- College of Sciences, Shihezi University, Shihezi 832003, China
| | - Jingjing Zhan
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Ocean Science and Technology, Dalian University of Technology, Panjin 124221, China
| | - Yang Liu
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Ocean Science and Technology, Dalian University of Technology, Panjin 124221, China.
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7
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Pizzetti F, Maspes A, Rossetti A, Rossi F. The addition of hyaluronic acid in chemical hydrogels can tune the physical properties and degradability. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2021.110843] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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8
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Kamlow MA, Vadodaria S, Gholamipour-Shirazi A, Spyropoulos F, Mills T. 3D printing of edible hydrogels containing thiamine and their comparison to cast gels. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2020.106550] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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9
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Shoaib MH, Sikandar M, Ahmed FR, Ali FR, Qazi F, Yousuf RI, Irshad A, Jabeen S, Ahmed K. Applications of Polysaccharides in Controlled Release Drug Delivery System. POLYSACCHARIDES 2021. [DOI: 10.1002/9781119711414.ch29] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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10
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Hydrogels as Drug Delivery Systems: A Review of Current Characterization and Evaluation Techniques. Pharmaceutics 2020; 12:pharmaceutics12121188. [PMID: 33297493 PMCID: PMC7762425 DOI: 10.3390/pharmaceutics12121188] [Citation(s) in RCA: 154] [Impact Index Per Article: 38.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 11/18/2020] [Accepted: 11/19/2020] [Indexed: 12/15/2022] Open
Abstract
Owing to their tunable properties, controllable degradation, and ability to protect labile drugs, hydrogels are increasingly investigated as local drug delivery systems. However, a lack of standardized methodologies used to characterize and evaluate drug release poses significant difficulties when comparing findings from different investigations, preventing an accurate assessment of systems. Here, we review the commonly used analytical techniques for drug detection and quantification from hydrogel delivery systems. The experimental conditions of drug release in saline solutions and their impact are discussed, along with the main mathematical and statistical approaches to characterize drug release profiles. We also review methods to determine drug diffusion coefficients and in vitro and in vivo models used to assess drug release and efficacy with the goal to provide guidelines and harmonized practices when investigating novel hydrogel drug delivery systems.
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11
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Tram NK, Maxwell CJ, Swindle-Reilly KE. Macro- and Microscale Properties of the Vitreous Humor to Inform Substitute Design and Intravitreal Biotransport. Curr Eye Res 2020; 46:429-444. [PMID: 33040616 DOI: 10.1080/02713683.2020.1826977] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Research on the vitreous humor and development of hydrogel vitreous substitutes have gained a rapid increase in interest within the past two decades. However, the properties of the vitreous humor and vitreous substitutes have yet to be consolidated. In this paper, the mechanical properties of the vitreous humor and hydrogel vitreous substitutes were systematically reviewed. The number of publications on the vitreous humor and vitreous substitutes over the years, as well as their respective testing conditions and testing techniques were analyzed. The mechanical properties of the human vitreous were found to be most similar to the vitreous of pigs and rabbits. The storage and loss moduli of the hydrogel vitreous substitutes developed were found to be orders of magnitude higher in comparison to the native human vitreous. However, the reported modulus for human vitreous, which was most commonly tested in vitro, has been hypothesized to be different in vivo. Future studies should focus on testing the mechanical properties of the vitreous in situ or in vivo. In addition to its mechanical properties, the vitreous humor has other biotransport mechanisms and biochemical functions that establish a redox balance and maintain an oxygen gradient inside the vitreous chamber to protect intraocular tissues from oxidative damage. Biomimetic hydrogel vitreous substitutes have the potential to provide ophthalmologists with additional avenues for treating and controlling vitreoretinal diseases while preventing complications after vitrectomy. Due to the proximity and interconnectedness of the vitreous humor to other ocular tissues, particularly the lens and the retina, more interest has been placed on understanding the properties of the vitreous humor in recent years. A better understanding of the properties of the vitreous humor will aid in improving the design of biomimetic vitreous substitutes and enhancing intravitreal biotransport.
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Affiliation(s)
- Nguyen K Tram
- Department of Biomedical Engineering, The Ohio State University, Columbus, OH, USA
| | - Courtney J Maxwell
- Department of Biomedical Engineering, The Ohio State University, Columbus, OH, USA
| | - Katelyn E Swindle-Reilly
- Department of Biomedical Engineering, The Ohio State University, Columbus, OH, USA.,William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, OH, USA.,Department of Ophthalmology & Visual Science, The Ohio State University, Columbus, OH, USA
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12
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Ingredients Acting as a Physical Barrier for the Prevention and Treatment of the Rhinovirus Infection. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10186511] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Although the common cold, usually caused by human rhinoviruses, is responsible for enormous damage to the economy and health every year, there are hardly any treatment options or prophylaxis for rhinovirus infections. In this work, the potential of a hydrogel complex, based on polymers and an aqueous extract of Icelandic moss in isla® medic lozenges (Engelhard Arzneimittel, Niederdorfelden, Germany), and two other hydrogels (based on solely xanthan gum or sodium hyaluronate) are investigated for the first time in order to prevent and treat rhinovirus infections. By means of rheological investigations, we demonstrate that isla® medic and containing polymers cause artificial saliva to thicken. Additionally, we demonstrate that the thickening results in the formation of a physical diffusion barrier, which leads to a significant reduction in plaques in a preventive plaque assay with rhinovirus 14 (RV-14). Furthermore, it is shown in a curative plaque assay that the hydrogel complex also has a curative effect on rhinovirus infections in that it reduces the spread of the RV-14-infection on H1-HeLa cell monolayers. Overall, polymer-based hydrogels and related products, such as isla® medic, could contribute to the prevention and treatment of rhinovirus infections.
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13
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Fiorati A, Contessi Negrini N, Baschenis E, Altomare L, Faré S, Giacometti Schieroni A, Piovani D, Mendichi R, Ferro M, Castiglione F, Mele A, Punta C, Melone L. TEMPO-Nanocellulose/Ca 2+ Hydrogels: Ibuprofen Drug Diffusion and In Vitro Cytocompatibility. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E183. [PMID: 31906423 PMCID: PMC6981511 DOI: 10.3390/ma13010183] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 12/28/2019] [Accepted: 12/29/2019] [Indexed: 12/16/2022]
Abstract
Stable hydrogels with tunable rheological properties were prepared by adding Ca2+ ions to aqueous dispersions of 2,2,6,6-tetramethylpiperidine 1-oxyl (TEMPO)-oxidized and ultra-sonicated cellulose nanofibers (TOUS-CNFs). The gelation occurred by interaction among polyvalent cations and the carboxylic units introduced on TOUS-CNFs during the oxidation process. Both dynamic viscosity values and pseudoplastic rheological behaviour increased by increasing the Ca2+ concentration, confirming the cross-linking action of the bivalent cation. The hydrogels were proved to be suitable controlled release systems by measuring the diffusion coefficient of a drug model (ibuprofen, IB) by high-resolution magic angle spinning (HR-MAS) nuclear magnetic resonance (NMR) spectroscopy. IB was used both as free molecule and as a 1:1 pre-formed complex with β-cyclodextrin (IB/β-CD), showing in this latter case a lower diffusion coefficient. Finally, the cytocompatibility of the TOUS-CNFs/Ca2+ hydrogels was demonstrated in vitro by indirect and direct tests conducted on a L929 murine fibroblast cell line, achieving a percentage number of viable cells after 7 days higher than 70%.
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Affiliation(s)
- Andrea Fiorati
- Department of Chemistry, Materials, and Chemical Engineering “G. Natta”—Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133 Milano, Italy; (N.C.N.); (E.B.); (L.A.); (S.F.); (M.F.); (F.C.); (A.M.); (C.P.)
- INSTM, National Consortium of Materials Science and Technology, Local Unit Politecnico di Milano, 20133 Milano, Italy
| | - Nicola Contessi Negrini
- Department of Chemistry, Materials, and Chemical Engineering “G. Natta”—Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133 Milano, Italy; (N.C.N.); (E.B.); (L.A.); (S.F.); (M.F.); (F.C.); (A.M.); (C.P.)
- INSTM, National Consortium of Materials Science and Technology, Local Unit Politecnico di Milano, 20133 Milano, Italy
| | - Elena Baschenis
- Department of Chemistry, Materials, and Chemical Engineering “G. Natta”—Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133 Milano, Italy; (N.C.N.); (E.B.); (L.A.); (S.F.); (M.F.); (F.C.); (A.M.); (C.P.)
| | - Lina Altomare
- Department of Chemistry, Materials, and Chemical Engineering “G. Natta”—Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133 Milano, Italy; (N.C.N.); (E.B.); (L.A.); (S.F.); (M.F.); (F.C.); (A.M.); (C.P.)
- INSTM, National Consortium of Materials Science and Technology, Local Unit Politecnico di Milano, 20133 Milano, Italy
| | - Silvia Faré
- Department of Chemistry, Materials, and Chemical Engineering “G. Natta”—Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133 Milano, Italy; (N.C.N.); (E.B.); (L.A.); (S.F.); (M.F.); (F.C.); (A.M.); (C.P.)
- INSTM, National Consortium of Materials Science and Technology, Local Unit Politecnico di Milano, 20133 Milano, Italy
| | - Alberto Giacometti Schieroni
- Istituto di Scienze e Tecnologie Chimiche (SCITEC-CNR), Via A. Corti 12, 20133 Milano, Italy; (A.G.S.); (D.P.); (R.M.)
| | - Daniele Piovani
- Istituto di Scienze e Tecnologie Chimiche (SCITEC-CNR), Via A. Corti 12, 20133 Milano, Italy; (A.G.S.); (D.P.); (R.M.)
| | - Raniero Mendichi
- Istituto di Scienze e Tecnologie Chimiche (SCITEC-CNR), Via A. Corti 12, 20133 Milano, Italy; (A.G.S.); (D.P.); (R.M.)
| | - Monica Ferro
- Department of Chemistry, Materials, and Chemical Engineering “G. Natta”—Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133 Milano, Italy; (N.C.N.); (E.B.); (L.A.); (S.F.); (M.F.); (F.C.); (A.M.); (C.P.)
| | - Franca Castiglione
- Department of Chemistry, Materials, and Chemical Engineering “G. Natta”—Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133 Milano, Italy; (N.C.N.); (E.B.); (L.A.); (S.F.); (M.F.); (F.C.); (A.M.); (C.P.)
| | - Andrea Mele
- Department of Chemistry, Materials, and Chemical Engineering “G. Natta”—Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133 Milano, Italy; (N.C.N.); (E.B.); (L.A.); (S.F.); (M.F.); (F.C.); (A.M.); (C.P.)
- Istituto di Scienze e Tecnologie Chimiche (SCITEC-CNR), Via A. Corti 12, 20133 Milano, Italy; (A.G.S.); (D.P.); (R.M.)
| | - Carlo Punta
- Department of Chemistry, Materials, and Chemical Engineering “G. Natta”—Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133 Milano, Italy; (N.C.N.); (E.B.); (L.A.); (S.F.); (M.F.); (F.C.); (A.M.); (C.P.)
- INSTM, National Consortium of Materials Science and Technology, Local Unit Politecnico di Milano, 20133 Milano, Italy
| | - Lucio Melone
- Department of Chemistry, Materials, and Chemical Engineering “G. Natta”—Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133 Milano, Italy; (N.C.N.); (E.B.); (L.A.); (S.F.); (M.F.); (F.C.); (A.M.); (C.P.)
- INSTM, National Consortium of Materials Science and Technology, Local Unit Politecnico di Milano, 20133 Milano, Italy
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14
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Alam TM. High Resolution Magic Angle Spinning (HRMAS) Pulse Field Gradient (PFG) NMR Diffusometry Studies of Swollen Polymers. NMR METHODS FOR CHARACTERIZATION OF SYNTHETIC AND NATURAL POLYMERS 2019. [DOI: 10.1039/9781788016483-00063] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
In this chapter, the combination of high resolution magic angle spinning (HRMAS) NMR spectroscopy and pulse field gradient (PFG) NMR diffusometry techniques to study solvent transport in swollen polymers is presented. The MAS suppression of magnetic susceptibility differences that exist for liquids absorbed in heterogenous polymer materials is shown to provide significant improvements in the NMR spectral resolution, thereby allowing the use of PFG NMR diffusion experiments to probe multiple chemical environments simultaneously. Recent examples of using 1H HRMAS PFG NMR experiments to measure solvent diffusion in 3D-printed siloxane polymer composites are detailed, along with an example of characterizing diffusion in methanol fuel cell anion exchange polymer membranes. These results demonstrate the power of HRMAS PFG NMR diffusometry to obtain information for complex chemical mixtures absorbed in polymers.
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Affiliation(s)
- Todd M. Alam
- Sandia National Laboratories, Department of Organic Material Sciences MS 0886, PO Box 5800 Albuquerque NM 87185 USA
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15
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Castiglione F, Casalegno M, Ferro M, Rossi F, Raos G, Mele A. Evidence of superdiffusive nanoscale motion in anionic polymeric hydrogels: Analysis of PGSE- NMR data and comparison with drug release properties. J Control Release 2019; 305:110-119. [PMID: 31121281 DOI: 10.1016/j.jconrel.2019.05.027] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 04/19/2019] [Accepted: 05/17/2019] [Indexed: 01/28/2023]
Abstract
Polymeric hydrogels are promising candidates for drug delivery applications, thanks to their ability to encapsulate, transport and release a wide range of chemicals. The successful application of these materials requires a deep understanding of the mechanisms governing solute transport at the nanoscale and its impact on release kinetics. In this work, we investigate the translational diffusion of ibuprofen loaded in anionic agarose-carbomer (AC) hydrogels by 1H high resolution magic angle spinning (HR-MAS) NMR spectroscopy, and compare it to its macroscopic release kinetics. The analysis of the experimental NMR data provides the first evidence of superdiffusion for ibuprofen in AC hydrogels. Superdiffusive transport is observed in the majority of our samples, especially those with the smallest mesh size (7 nm) and highest ibuprofen concentrations (90-120 mg/mL). This outcome is rationalized in terms of heavy-tailed distributions of spatial displacements (Lèvy flights) and of waiting times, which depend on the nanoscopic structural heterogeneity of the gels and the strong but reversible association between ibuprofen and the agarose matrix.
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Affiliation(s)
- Franca Castiglione
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Via Mancinelli 7, 20131 Milan, Italy.
| | - Mosè Casalegno
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Via Mancinelli 7, 20131 Milan, Italy.
| | - Monica Ferro
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Via Mancinelli 7, 20131 Milan, Italy
| | - Filippo Rossi
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Via Mancinelli 7, 20131 Milan, Italy
| | - Guido Raos
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Via Mancinelli 7, 20131 Milan, Italy
| | - Andrea Mele
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Via Mancinelli 7, 20131 Milan, Italy; CNR Istituto di Chimica del Riconoscimento Molecolare, Via Mancinelli 7, 20131 Milan, Italy
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Diffusion through the ex vivo vitreal body – Bovine, porcine, and ovine models are poor surrogates for the human vitreous. Int J Pharm 2018; 550:207-215. [DOI: 10.1016/j.ijpharm.2018.07.070] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Revised: 07/24/2018] [Accepted: 07/25/2018] [Indexed: 11/21/2022]
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17
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Mauri E, Negri A, Rebellato E, Masi M, Perale G, Rossi F. Hydrogel-Nanoparticles Composite System for Controlled Drug Delivery. Gels 2018; 4:E74. [PMID: 30674850 PMCID: PMC6209253 DOI: 10.3390/gels4030074] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Revised: 08/20/2018] [Accepted: 08/29/2018] [Indexed: 12/28/2022] Open
Abstract
Biodegradable poly(ethylene glycol)-block-poly(-lactic acid) (PEG-b-PLA) nanoparticles (NPs) were prepared by nanoprecipitation with controlled dimension and with different electric charges, as monitored by dynamic light scattering (DLS). Then NPs were loaded within hydrogels (HG) developed for biomedical applications in the central nervous system, with different pore sizes (30 and 90 nm). The characteristics of the resulting composite hydrogel-NPs system were firstly studied in terms of ability to control the release of small steric hindrance drug mimetic. Then, diffusion-controlled release of different charged NPs from different entangled hydrogels was studied in vitro and correlated with NPs electric charges and hydrogel mean mesh size. These studies showed different trends, that depend on NPs superficial charge and HG mesh size. Release experiments and diffusion studies, then rationalized by mathematical modeling, allowed us to build different drug delivery devices that can satisfy different medical needs.
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Affiliation(s)
- Emanuele Mauri
- Department of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico di Milano, via Mancinelli 7, 20131 Milan, Italy.
| | - Anna Negri
- Department of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico di Milano, via Mancinelli 7, 20131 Milan, Italy.
| | - Erica Rebellato
- Department of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico di Milano, via Mancinelli 7, 20131 Milan, Italy.
| | - Maurizio Masi
- Department of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico di Milano, via Mancinelli 7, 20131 Milan, Italy.
| | - Giuseppe Perale
- Biomaterials Laboratory, Institute for Mechanical Engineering and Materials Technology, SUPSI-University of Applied Sciences and Arts of Southern Switzerland, via Cantonale 2C, Galleria 2, 6928 Manno, Switzerland.
| | - Filippo Rossi
- Department of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico di Milano, via Mancinelli 7, 20131 Milan, Italy.
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18
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Mauri E, Sacchetti A, Vicario N, Peruzzotti-Jametti L, Rossi F, Pluchino S. Evaluation of RGD functionalization in hybrid hydrogels as 3D neural stem cell culture systems. Biomater Sci 2018; 6:501-510. [PMID: 29368775 DOI: 10.1039/c7bm01056g] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The use of neural stem cells (NSCs) in cell therapy has become a powerful tool used for the treatment of central nervous system diseases, including traumatic brain and spinal cord injuries. However, a significant drawback is related to the limited viability after transplantation in situ. The design of three-dimensional (3D) scaffolds that are capable of resembling the architecture and physico-chemical features of an extracellular environment could be a suitable approach to improve cell survival and preserve their cellular active phase over time. In this study, we investigated NSC adhesion and proliferation in hydrogel systems. In particular, we evaluated the effect of RGD binding domains on cell fate within the polymeric scaffold. The introduction of a tripeptide via hydrogel chemical functionalization improved the percentage of proliferating cells until 8 days after seeding when compared to the unmodified scaffold. The beneficial effects of this 3D culture system was further evident when compared to a NSC monolayer (2D) culture, resulting in an approximately 40% increase in cells in the active phases at 4 and 8 days, and maintained a difference of 25% until 21 days after seeding.
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Affiliation(s)
- Emanuele Mauri
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, via Mancinelli 7, 20131 Milan, Italy.
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19
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Mauri E, Cappella F, Masi M, Rossi F. PEGylation influences drug delivery from nanogels. J Drug Deliv Sci Technol 2018. [DOI: 10.1016/j.jddst.2018.05.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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20
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Rossi F, Castiglione F, Salvalaglio M, Ferro M, Moioli M, Mauri E, Masi M, Mele A. On the parallelism between the mechanisms behind chromatography and drug delivery: the role of interactions with a stationary phase. Phys Chem Chem Phys 2018; 19:11518-11528. [PMID: 28425554 DOI: 10.1039/c7cp00832e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A huge number of studies and work in the drug delivery literature are focused on understanding and modeling transport phenomena, the pivotal point for a good device design. The rationalization of all phenomena involved is fundamental, but several concerns arise leaving many issues unsolved. In order to change the point of view we decided to focus our attention on the parallelisms between two fields that seem to be very far from each other: chromatography and drug release. Taking advantages of the studies conducted by many researchers using chromatographic columns we decided to explain all the phenomena involved in drug delivery considering sodium ibuprofen (IP) molecules as analytes and hydrogel as a stationary phase. In particular, we considered not only diffusion, but also drug-polymer interactions as adsorption on the stationary phase and drug-drug interactions as aggregation of analytes. The hydrogel investigated is a promising formulation made of agarose and carbomer 974p (AC) loaded with IP, a non-steroidal common anti-inflammatory drug. The self-diffusion coefficient of IP in AC formulations was measured by using an innovative method based on a magic angle spinning NMR spectroscopic technique to produce high resolution (liquid-like) spectra. This method (HR-MAS NMR) is used in combination with pulsed field gradient spin echo (PGSE) liquid-state techniques. The model predictions satisfactorily match with the experimental data obtained in water and the gel environment, indicating that the model presented here, despite its simplicity, is able to describe the key phenomena governing the device behavior and could be used to rationalize the experimental activity.
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Affiliation(s)
- Filippo Rossi
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, via Luigi Mancinelli 7, 20131 Milan, Italy.
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21
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Mauri E, Micotti E, Rossetti A, Melone L, Papa S, Azzolini G, Rimondo S, Veglianese P, Punta C, Rossi F, Sacchetti A. Microwave-assisted synthesis of TEMPO-labeled hydrogels traceable with MRI. SOFT MATTER 2018; 14:558-565. [PMID: 29333553 DOI: 10.1039/c7sm02292a] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Polymer functionalization strategies have recently attracted considerable attention for several applications in biomaterials science. In particular, technological advancements in medical imaging have focused on the design of polymeric matrices to improve non-invasive approaches and diagnostic accuracy. In this scenario, the use of microwave irradiation of aqueous solutions containing appropriate combinations of polymers is gaining increasing interest in the synthesis of sterile hydrogels without using monomers, eliminating the need to remove unreacted species. In this study, we developed a method for the in situ fabrication of TEMPO-labeled hydrogels based on a one-pot microwave reaction that can then be tracked by magnetic resonance imaging (MRI) without using toxic compounds that could be hostile for the target tissue. Click chemistry was used to link TEMPO to the polymeric scaffold. In an in vivo model, the system was able to preserve its TEMPO paramagnetic activity up to 1 month after hydrogel injection, showing a clear detectable signal on T1-weighted MRI with a longitudinal relaxivity value of 0.29 mM s-1, comparable to a value of 0.31 mM s-1 characteristic of TEMPO application. The uncleavable conjugation between the contrast agent and the polymeric scaffold is a leading point to record these results: the use of TEMPO only physically entrapped in the polymeric scaffold did not show MRI traceability even after few hours. Moreover, the use of TEMPO-labeled hydrogels can also help to reduce the number of animals sacrificed being a longitudinal non-invasive technique.
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Affiliation(s)
- Emanuele Mauri
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, via Mancinelli 7, 20131 Milan, Italy.
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22
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Kodela SP, Pandey PM, Nayak SK, Uvanesh K, Anis A, Pal K. Novel agar–stearyl alcohol oleogel-based bigels as structured delivery vehicles. INT J POLYM MATER PO 2017. [DOI: 10.1080/00914037.2016.1252362] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Sarika Patel Kodela
- Department of Biotechnology and Medical Engineering, National Institute of Technology, Rourkela, India
| | - Preeti Madhuri Pandey
- Department of Biotechnology and Medical Engineering, National Institute of Technology, Rourkela, India
| | - Suraj K. Nayak
- Department of Biotechnology and Medical Engineering, National Institute of Technology, Rourkela, India
| | - K. Uvanesh
- Department of Biotechnology and Medical Engineering, National Institute of Technology, Rourkela, India
| | - Arfat Anis
- SABIC Polymer Research Center, Department of Chemical Engineering, King Saud University, Riyadh, Saudi Arabia
| | - Kunal Pal
- Department of Biotechnology and Medical Engineering, National Institute of Technology, Rourkela, India
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23
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Mauri E, Chincarini GM, Rigamonti R, Magagnin L, Sacchetti A, Rossi F. Modulation of electrostatic interactions to improve controlled drug delivery from nanogels. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 72:308-315. [DOI: 10.1016/j.msec.2016.11.081] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Revised: 11/07/2016] [Accepted: 11/21/2016] [Indexed: 12/31/2022]
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24
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Mauri E, Papa S, Masi M, Veglianese P, Rossi F. Novel functionalization strategies to improve drug delivery from polymers. Expert Opin Drug Deliv 2017; 14:1305-1313. [DOI: 10.1080/17425247.2017.1285280] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Emanuele Mauri
- Dipartimento di Chimica, Materiali e Ingegneria Chimica ‘Giulio Natta’, Politecnico di Milano, Milano, Italy
| | - Simonetta Papa
- Dipartimento di Neuroscienze, IRCCS Istituto di Ricerche Farmacologiche Mario Negri, Milano, Italy
| | - Maurizio Masi
- Dipartimento di Chimica, Materiali e Ingegneria Chimica ‘Giulio Natta’, Politecnico di Milano, Milano, Italy
| | - Pietro Veglianese
- Dipartimento di Neuroscienze, IRCCS Istituto di Ricerche Farmacologiche Mario Negri, Milano, Italy
| | - Filippo Rossi
- Dipartimento di Chimica, Materiali e Ingegneria Chimica ‘Giulio Natta’, Politecnico di Milano, Milano, Italy
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25
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Darwish GH, Fakih HH, Karam P. Temperature Mapping in Hydrogel Matrices Using Unmodified Digital Camera. J Phys Chem B 2017; 121:1033-1040. [DOI: 10.1021/acs.jpcb.6b11844] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Ghinwa H. Darwish
- Department of Chemistry, American University of Beirut, P.O.
Box 11-0236, Beirut 1107 2020, Lebanon
| | - Hassan H. Fakih
- Department of Chemistry, American University of Beirut, P.O.
Box 11-0236, Beirut 1107 2020, Lebanon
| | - Pierre Karam
- Department of Chemistry, American University of Beirut, P.O.
Box 11-0236, Beirut 1107 2020, Lebanon
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26
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Ferro M, Castiglione F, Punta C, Melone L, Panzeri W, Rossi B, Trotta F, Mele A. Transport Properties of Ibuprofen Encapsulated in Cyclodextrin Nanosponge Hydrogels: A Proton HR-MAS NMR Spectroscopy Study. J Vis Exp 2016. [PMID: 27585291 DOI: 10.3791/53769] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
The chemical cross-linking of β-cyclodextrin (β-CD) with ethylenediaminetetraacetic dianhydride (EDTA) led to branched polymers referred to as cyclodextrin nanosponges (CDNSEDTA). Two different preparations are described with 1:4 and 1:8 CD-EDTA molar ratios. The corresponding cross-linked polymers were contacted with 0.27 M aqueous solution of ibuprofen sodium salt (IP) leading to homogeneous, colorless, drug loaded hydrogels. The systems were characterized by high resolution magic angle spinning (HR-MAS) NMR spectroscopy. Pulsed field gradient spin echo (PGSE) NMR spectroscopy was used to determine the mean square displacement (MSD) of IP inside the polymeric gel at different observation times td. The data were further processed in order to study the time dependence of MSD: MSD = f(td). The proposed methodology is useful to characterize the different diffusion regimes that, in principle, the solute may experience inside the hydrogel, namely normal or anomalous diffusion. The full protocols including the polymer preparation and purification, the obtainment of drug-loaded hydrogels, the NMR sample preparation, the measurement of MSD by HR-MAS NMR spectroscopy and the final data processing to achieve the time dependence of MSD are here reported and discussed. The presented experiments represent a paradigmatic case and the data are discussed in terms of innovative approach to the characterization of the transport properties of an encapsulated guest within a polymeric host of potential application for drug delivery.
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Affiliation(s)
- Monica Ferro
- Department of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico di Milano
| | - Franca Castiglione
- Department of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico di Milano
| | - Carlo Punta
- Department of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico di Milano
| | - Lucio Melone
- Department of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico di Milano; Università degli studi e-Campus
| | | | | | | | - Andrea Mele
- Department of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico di Milano;
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27
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Affiliation(s)
- Chia-Chun Lin
- Department of Materials Science
and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6272, United States
| | - Emmabeth Parrish
- Department of Materials Science
and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6272, United States
| | - Russell J. Composto
- Department of Materials Science
and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6272, United States
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28
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Mauri E, Moroni I, Magagnin L, Masi M, Sacchetti A, Rossi F. Comparison between two different click strategies to synthesize fluorescent nanogels for therapeutic applications. REACT FUNCT POLYM 2016. [DOI: 10.1016/j.reactfunctpolym.2016.05.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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29
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Rossi F, Castiglione F, Ferro M, Moioli M, Mele A, Masi M. The Role of Drug-Drug Interactions in Hydrogel Delivery Systems: Experimental and Model Study. Chemphyschem 2016; 17:1615-22. [DOI: 10.1002/cphc.201600069] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Indexed: 12/20/2022]
Affiliation(s)
- Filippo Rossi
- Department of Chemistry; Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano; via Mancinelli 7 20131 Milan Italy
| | - Franca Castiglione
- Department of Chemistry; Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano; via Mancinelli 7 20131 Milan Italy
| | - Monica Ferro
- Department of Chemistry; Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano; via Mancinelli 7 20131 Milan Italy
| | - Marta Moioli
- Department of Chemistry; Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano; via Mancinelli 7 20131 Milan Italy
| | - Andrea Mele
- Department of Chemistry; Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano; via Mancinelli 7 20131 Milan Italy
- CNR-ICRM; via Luigi Mancinelli 7 20131 Milan Italy
| | - Maurizio Masi
- Department of Chemistry; Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano; via Mancinelli 7 20131 Milan Italy
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Sacchetti A, Rossi F, Rossetti A, Pesa R, Mauri E. Hydrogel supported chiral imidazolidinone for organocatalytic enantioselective reduction of olefins in water. CHEMICAL PAPERS 2016. [DOI: 10.1515/chempap-2015-0232] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractChiral products play an important role particularly in the field of medicinal chemistry, where it is known that enantiomers often have very different biological properties and effects. One of the most powerful tool to obtain a product as a single enantiomer is asymmetric catalysis. Recently, organocatalysis, i.e. the use of small organic molecules to catalyze enantioselective transformations, has emerged as a prominent field in asymmetric synthesis. In this work, the use of hydrogels as a support for a chiral imidazolidinone organocatalyst (MacMillan catalyst) and its application in the reduction of activated olefins mediated by the Hantzsch ester is reported for the first time. Results showed a good activity of hydrogels in respect to both yield and enantioselection.
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31
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Improving agar electrospinnability with choline-based deep eutectic solvents. Int J Biol Macromol 2015; 80:139-48. [DOI: 10.1016/j.ijbiomac.2015.06.034] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Revised: 06/12/2015] [Accepted: 06/18/2015] [Indexed: 11/23/2022]
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32
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Rossi F, Castiglione F, Ferro M, Marchini P, Mauri E, Moioli M, Mele A, Masi M. Drug-Polymer Interactions in Hydrogel-based Drug-Delivery Systems: An Experimental and Theoretical Study. Chemphyschem 2015; 16:2818-2825. [DOI: 10.1002/cphc.201500526] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Indexed: 12/19/2022]
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33
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Colombo C, Galletti L, Lepri M, Caron I, Magagnin L, Veglianese P, Rossi F, Moscatelli D. Multidrug encapsulation within self-assembled 3D structures formed by biodegradable nanoparticles. Eur Polym J 2015. [DOI: 10.1016/j.eurpolymj.2015.04.037] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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34
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Rossi F, Ferrari R, Castiglione F, Mele A, Perale G, Moscatelli D. Polymer hydrogel functionalized with biodegradable nanoparticles as composite system for controlled drug delivery. NANOTECHNOLOGY 2015; 26:015602. [PMID: 25490351 DOI: 10.1088/0957-4484/26/1/015602] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The possibility to direct pharmacological treatments targeting specific cell lines using polymer nanoparticles is one of the main novelties and perspectives in nanomedicine. However, sometimes, the ability to maintain NPs localized at the site of the injection that work as a drug reservoir can represent a good and complementary option. In this direction we built a composite material made of polymeric hydrogel functionalized with polymer NPs. ϵ-caprolactone and polyethylene glycol have been copolymerized in a two-step synthesis of PEGylated NPs, while hydrogel was synthesized through polycondensation between NPs, agarose and branched polyacrylic acid. NP functionalization was verified with Fourier transform infrared spectroscopy (FTIR), high resolution magic angle spinning-nuclear magnetic resonance (HRMAS-NMR) spectroscopy and release kinetics from a hydrogel matrix and compared with NPs only physically entrapped into a hydrogel matrix. The characteristics of the resulting composite hydrogel-NPs system were studied both in terms of rheological properties and in its ability to sustain the release of To-Pro3, used as a drug mimetic compound to represent a promising drug delivery device.
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35
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Rossi B, Venuti V, Mele A, Punta C, Melone L, Crupi V, Majolino D, Trotta F, D’Amico F, Gessini A, Masciovecchio C. Probing the molecular connectivity of water confined in polymer hydrogels. J Chem Phys 2015; 142:014901. [DOI: 10.1063/1.4904946] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
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36
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Pal P, Banat F. Removal of Contaminants from Industrial Lean Amine Solvent Using Polyacrylamide Hydrogels Optimized by Response Surface Methodology. ADSORPT SCI TECHNOL 2015. [DOI: 10.1260/0263-6174.33.1.9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Affiliation(s)
- Priyabrata Pal
- Department of Chemical Engineering, The Petroleum Institute, P.O. Box 2533, Abu Dhabi, United Arab Emirates
| | - Fawzi Banat
- Department of Chemical Engineering, The Petroleum Institute, P.O. Box 2533, Abu Dhabi, United Arab Emirates
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37
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Rossi B, Venuti V, D'Amico F, Gessini A, Castiglione F, Mele A, Punta C, Melone L, Crupi V, Majolino D, Trotta F, Masciovecchio C. Water and polymer dynamics in a model polysaccharide hydrogel: the role of hydrophobic/hydrophilic balance. Phys Chem Chem Phys 2015; 17:963-71. [DOI: 10.1039/c4cp04045g] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The role of hydrophobicity/hydrophilicity balance in the gelation phenomena in water-swollen polymers is explored in a model polysaccharide hydrogel.
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38
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Electrospinning of agar/PVA aqueous solutions and its relation with rheological properties. Carbohydr Polym 2015; 115:348-55. [DOI: 10.1016/j.carbpol.2014.08.074] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2014] [Revised: 08/08/2014] [Accepted: 08/10/2014] [Indexed: 11/22/2022]
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39
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Vazhayal L, Kumar Sasidharan N, Talasila S, Kumar DBS, Solaiappan A. Supramolecular association of 2D alumino-siloxane aquagel building blocks to 3D porous cages and its efficacy for topical and injectable delivery of fluconazole, an antifungal drug. J Mater Chem B 2015; 3:5978-5990. [DOI: 10.1039/c5tb00625b] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A fascinating 2D architecture of an alumino-siloxane gel self-assembled into a well-defined 3D porous aquagel cage. It is identified to be an excellently mechanically stable, injectable and non-cytotoxic medium for drug delivery applications.
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Affiliation(s)
- Linsha Vazhayal
- Functional Materials Section
- Materials Science and Technology Division
- Council of Scientific and Industrial Research-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST)
- Thiruvananthapuram-695019
- India
| | - Nishanth Kumar Sasidharan
- Agroprocessing and Natural Products Division
- Council of Scientific and Industrial Research-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST)
- Thiruvananthapuram-695019
- India
| | - Sindhoor Talasila
- K. M. College of Pharmacy
- Department of Pharmaceutics
- Madurai-625107
- India
| | - Dileep B. S. Kumar
- Agroprocessing and Natural Products Division
- Council of Scientific and Industrial Research-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST)
- Thiruvananthapuram-695019
- India
| | - Ananthakumar Solaiappan
- Functional Materials Section
- Materials Science and Technology Division
- Council of Scientific and Industrial Research-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST)
- Thiruvananthapuram-695019
- India
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40
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Ferro M, Castiglione F, Punta C, Melone L, Panzeri W, Rossi B, Trotta F, Mele A. Anomalous diffusion of Ibuprofen in cyclodextrin nanosponge hydrogels: an HRMAS NMR study. Beilstein J Org Chem 2014; 10:2715-23. [PMID: 25550735 PMCID: PMC4273256 DOI: 10.3762/bjoc.10.286] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2014] [Accepted: 11/06/2014] [Indexed: 12/24/2022] Open
Abstract
Ibuprofen sodium salt (IP) was encapsulated in cyclodextrin nanosponges (CDNS) obtained by cross-linking of β-cyclodextrin with ethylenediaminetetraacetic acid dianhydride (EDTAn) in two different preparations: CDNSEDTA 1:4 and 1:8, where the 1:n notation indicates the CD to EDTAn molar ratio. The entrapment of IP was achieved by swelling the two polymers with a 0.27 M solution of IP in D2O, leading to colourless, homogeneous hydrogels loaded with IP. The molecular environment and the transport properties of IP in the hydrogels were studied by high resolution magic angle spinning (HRMAS) NMR spectroscopy. The mean square displacement (MSD) of IP in the gels was obtained by a pulsed field gradient spin echo (PGSE) NMR pulse sequence at different observation times t d. The MSD is proportional to the observation time elevated to a scaling factor α. The α values define the normal Gaussian random motion (α = 1), or the anomalous diffusion (α < 1, subdiffusion, α > 1 superdiffusion). The experimental data here reported point out that IP undergoes subdiffusive regime in CDNSEDTA 1:4, while a slightly superdiffusive behaviour is observed in CDNSEDTA 1:8. The transition between the two dynamic regimes is triggered by the polymer structure. CDNSEDTA 1:4 is characterized by a nanoporous structure able to induce confinement effects on IP, thus causing subdiffusive random motion. CDNSEDTA 1:8 is characterized not only by nanopores, but also by dangling EDTA groups ending with ionized COO(-) groups. The negative potential provided by such groups to the polymer backbone is responsible for the acceleration effects on the IP anion thus leading to the superdiffusive behaviour observed. These results point out that HRMAS NMR spectroscopy is a powerful direct method for the assessment of the transport properties of a drug encapsulated in polymeric scaffolds. The diffusion properties of IP in CDNS can be modulated by suitable polymer synthesis; this finding opens the possibility to design suitable systems for drug delivery with predictable and desired drug release properties.
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Affiliation(s)
- Monica Ferro
- Department of Chemistry, Materials and Chemical Engineering “G. Natta”, Politecnico di Milano, Piazza L. da Vinci 32 – 20133 Milano Italy
| | - Franca Castiglione
- Department of Chemistry, Materials and Chemical Engineering “G. Natta”, Politecnico di Milano, Piazza L. da Vinci 32 – 20133 Milano Italy
| | - Carlo Punta
- Department of Chemistry, Materials and Chemical Engineering “G. Natta”, Politecnico di Milano, Piazza L. da Vinci 32 – 20133 Milano Italy
| | - Lucio Melone
- Department of Chemistry, Materials and Chemical Engineering “G. Natta”, Politecnico di Milano, Piazza L. da Vinci 32 – 20133 Milano Italy
| | | | - Barbara Rossi
- Elettra - Sincrotrone Trieste, Strada Statale 14 km 163.5, Area Science Park, 34149 Trieste, Italy and Department of Physics, University of Trento, via Sommarive 14, 38123 Povo, Trento, Italy
| | - Francesco Trotta
- Department of Chemistry, University of Torino, Via Pietro Giuria 7, 10125 Torino, Italy
| | - Andrea Mele
- Department of Chemistry, Materials and Chemical Engineering “G. Natta”, Politecnico di Milano, Piazza L. da Vinci 32 – 20133 Milano Italy
- CNR-ICRM, Via L. Mancinelli, 7 20131 Milano, Italy
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Biocleaning of Cultural Heritage stone surfaces and frescoes: which delivery system can be the most appropriate? ANN MICROBIOL 2014. [DOI: 10.1007/s13213-014-0938-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
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43
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Rossi F, Santoro M, Perale G. Polymeric scaffolds as stem cell carriers in bone repair. J Tissue Eng Regen Med 2013; 9:1093-119. [DOI: 10.1002/term.1827] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2012] [Revised: 07/29/2013] [Accepted: 08/30/2013] [Indexed: 12/16/2022]
Affiliation(s)
- Filippo Rossi
- Department of Chemistry, Materials and Chemical Engineering; 'Giulio Natta' Politecnico di Milano; Milan Italy
| | - Marco Santoro
- Department of Chemical and Biomolecular Engineering; Rice University; Houston TX USA
| | - Giuseppe Perale
- Department of Chemistry, Materials and Chemical Engineering; 'Giulio Natta' Politecnico di Milano; Milan Italy
- Department of Innovative Technologies; University of Southern Switzerland; Manno Switzerland
- Swiss Institute for Regenerative Medicine; Taverne Switzerland
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44
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Rossi F, Ferrari R, Papa S, Moscatelli D, Casalini T, Forloni G, Perale G, Veglianese P. Tunable hydrogel—Nanoparticles release system for sustained combination therapies in the spinal cord. Colloids Surf B Biointerfaces 2013; 108:169-77. [DOI: 10.1016/j.colsurfb.2013.02.046] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2012] [Revised: 02/26/2013] [Accepted: 02/27/2013] [Indexed: 01/25/2023]
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45
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Lin G, Cosimbescu L, Karin NJ, Gutowska A, Tarasevich BJ. Injectable and thermogelling hydrogels of PCL-g-PEG: mechanisms, rheological and enzymatic degradation properties. J Mater Chem B 2013; 1:1249-1255. [DOI: 10.1039/c2tb00468b] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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46
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Liu Y, Wang T, Liu M. Supramolecular Polymer Hydrogels from BolaamphiphilicL-Histidine and Benzene Dicarboxylic Acids: Thixotropy and Significant Enhancement of EuIIIFluorescence. Chemistry 2012; 18:14650-9. [DOI: 10.1002/chem.201202637] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2012] [Indexed: 12/22/2022]
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47
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Al-Malah KI, Azzam MOJ. Carbomer Dispersions: A New Calibration Method for Quantifying Shear-Thinning and Shear-Thickening Effects. J DISPER SCI TECHNOL 2012. [DOI: 10.1080/01932691.2011.605670] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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48
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Sustained Delivery of Chondroitinase ABC from Hydrogel System. J Funct Biomater 2012; 3:199-208. [PMID: 24956524 PMCID: PMC4031008 DOI: 10.3390/jfb3010199] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2011] [Revised: 02/27/2012] [Accepted: 03/13/2012] [Indexed: 02/06/2023] Open
Abstract
In the injured spinal cord, chondroitin sulfate proteoglycans (CSPGs) are the principal responsible of axon growth inhibition and they contribute to regenerative failure, promoting glial scar formation. Chondroitinase ABC (chABC) is known for being able to digest proteoglycans, thus degrading glial scar and favoring axonal regrowth. However, its classic administration is invasive, infection-prone and clinically problematic. An agarose-carbomer (AC1) hydrogel, already used in SCI repair strategies, was here investigated as a delivery system capable of an effective chABC administration: the material ability to include chABC within its pores and the possibility to be injected into the target tissue were firstly proved. Subsequently, release kinetic and the maintenance of enzymatic activity were positively assessed: AC1 hydrogel was thus confirmed to be a feasible tool for chABC delivery and a promising device for spinal cord injury topic repair strategies.
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49
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Perale G, Rossi F, Santoro M, Peviani M, Papa S, Llupi D, Torriani P, Micotti E, Previdi S, Cervo L, Sundström E, Boccaccini AR, Masi M, Forloni G, Veglianese P. Multiple drug delivery hydrogel system for spinal cord injury repair strategies. J Control Release 2011; 159:271-80. [PMID: 22227024 DOI: 10.1016/j.jconrel.2011.12.025] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2011] [Revised: 12/01/2011] [Accepted: 12/20/2011] [Indexed: 02/07/2023]
Abstract
The multifactorial pathological progress of spinal cord injury (SCI) is probably the main reason behind the absence of efficient therapeutic approaches. Hence, very recent highlights suggest the use of new multidrug delivery systems capable of local controlled release of therapeutic agents. In this work, a biocompatible hydrogel-based system was developed as multiple drug delivery tool, specifically designed for SCI repair strategies. Multiple release profiles were achieved by loading gel with a combination of low and high steric hindrance molecules. In vitro, in vivo and ex vivo release studies showed an independent combination of fast diffusion-controlled kinetics for smaller molecules together with slow diffusion-controlled kinetics for bigger ones. A preserved functionality of loaded substances was always achieved, confirming the absence of any chemical stable interactions between gel matrix and loaded molecules. Moreover, the relevant effect of the cerebrospinal fluid flux dynamics on the drug diffusion in the spinal cord tissue was here revealed for the first time: an oriented delivery of the released molecules in the spinal cord tract caudally to the gel site is demonstrated, thus suggesting a more efficient gel positioning rostrally to the lesion.
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Affiliation(s)
- Giuseppe Perale
- Department of Chemistry, Materials and Chemical Engineering Giulio Natta, Politecnico di Milano, via Mancinelli 7, 20131 Milan, Italy
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50
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Casalini T, Salvalaglio M, Perale G, Masi M, Cavallotti C. Diffusion and Aggregation of Sodium Fluorescein in Aqueous Solutions. J Phys Chem B 2011; 115:12896-904. [DOI: 10.1021/jp207459k] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tommaso Casalini
- Dipartimento di Chimica, Materiali e Ingegneria Chimica “G. Natta”, Politecnico di Milano via Mancinelli 7−20131 Milano, Italy
| | - Matteo Salvalaglio
- Dipartimento di Chimica, Materiali e Ingegneria Chimica “G. Natta”, Politecnico di Milano via Mancinelli 7−20131 Milano, Italy
| | - Giuseppe Perale
- Dipartimento di Chimica, Materiali e Ingegneria Chimica “G. Natta”, Politecnico di Milano via Mancinelli 7−20131 Milano, Italy
| | - Maurizio Masi
- Dipartimento di Chimica, Materiali e Ingegneria Chimica “G. Natta”, Politecnico di Milano via Mancinelli 7−20131 Milano, Italy
| | - Carlo Cavallotti
- Dipartimento di Chimica, Materiali e Ingegneria Chimica “G. Natta”, Politecnico di Milano via Mancinelli 7−20131 Milano, Italy
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