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Alaoui C, Karmaoui M, Elaziouti A, Touati W, kaddi Allah I, Benhamed A, Bekka A. Solvothermal synthesis and characterization of monoclinic WO3 nanoplatelets: investigation of their photocatalytic performance. RESEARCH ON CHEMICAL INTERMEDIATES 2022. [DOI: 10.1007/s11164-022-04923-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Mazzarotta A, Caputo TM, Raiola L, Battista E, Netti PA, Causa F. Small Oligonucleotides Detection in Three-Dimensional Polymer Network of DNA-PEG Hydrogels. Gels 2021; 7:90. [PMID: 34287281 PMCID: PMC8293047 DOI: 10.3390/gels7030090] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 07/01/2021] [Accepted: 07/03/2021] [Indexed: 11/23/2022] Open
Abstract
The control of the three-dimensional (3D) polymer network structure is important for permselective materials when specific biomolecule detection is needed. Here we investigate conditions to obtain a tailored hydrogel network that combines both molecular filtering and molecular capture capabilities for biosensing applications. Along this line, short oligonucleotide detection in a displacement assay is set within PEGDA hydrogels synthetized by UV radical photopolymerization. To provide insights on the molecular filter capability, diffusion studies of several probes (sulforhodamine G and dextrans) with different hydrodynamic radii were carried out using NMR technique. Moreover, fluorometric analyses of hybridization of DNA oligonucleotides inside PEGDA hydrogels shed light on the mechanisms of recognition in 3D, highlighting that mesh size and crowding effect greatly impact the hybridization mechanism on a polymer network. Finally, we found the best probe density and diffusion transport conditions to allow the specific oligonucleotide capture and detection inside PEGDA hydrogels for oligonucleotide detection and the filtering out of higher molecular weight molecules.
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Affiliation(s)
- Alessia Mazzarotta
- Center for Advanced Biomaterials for Healthcare@CRIB, Istituto Italiano di Tecnologia (IIT), Largo Barsanti e Matteucci 53, 80125 Naples, Italy; (A.M.); (T.M.C.); (L.R.); (P.A.N.)
| | - Tania Mariastella Caputo
- Center for Advanced Biomaterials for Healthcare@CRIB, Istituto Italiano di Tecnologia (IIT), Largo Barsanti e Matteucci 53, 80125 Naples, Italy; (A.M.); (T.M.C.); (L.R.); (P.A.N.)
| | - Luca Raiola
- Center for Advanced Biomaterials for Healthcare@CRIB, Istituto Italiano di Tecnologia (IIT), Largo Barsanti e Matteucci 53, 80125 Naples, Italy; (A.M.); (T.M.C.); (L.R.); (P.A.N.)
| | - Edmondo Battista
- Interdisciplinary Research Centre on Biomaterials (CRIB), Università degli Studi di Napoli “Federico II”, Piazzale Tecchio 80, 80125 Naples, Italy;
| | - Paolo Antonio Netti
- Center for Advanced Biomaterials for Healthcare@CRIB, Istituto Italiano di Tecnologia (IIT), Largo Barsanti e Matteucci 53, 80125 Naples, Italy; (A.M.); (T.M.C.); (L.R.); (P.A.N.)
- Interdisciplinary Research Centre on Biomaterials (CRIB), Università degli Studi di Napoli “Federico II”, Piazzale Tecchio 80, 80125 Naples, Italy;
- Dipartimento di Ingegneria Chimica del Materiali e della Produzione Industriale (DICMAPI), University “Federico II”, Piazzale Tecchio 80, 80125 Naples, Italy
| | - Filippo Causa
- Interdisciplinary Research Centre on Biomaterials (CRIB), Università degli Studi di Napoli “Federico II”, Piazzale Tecchio 80, 80125 Naples, Italy;
- Dipartimento di Ingegneria Chimica del Materiali e della Produzione Industriale (DICMAPI), University “Federico II”, Piazzale Tecchio 80, 80125 Naples, Italy
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Maire du Poset A, Börjesson M, Rameau C, Madeleine-Perdrillat C, Lerbret A, Loupiac C, Cousin F, Assifaoui A. Controlled Loading and Release of Beta-Lactoglobulin in Calcium-Polygalacturonate Hydrogels. Biomacromolecules 2020; 21:1417-1426. [PMID: 32109357 DOI: 10.1021/acs.biomac.9b01722] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We show here how the structure of polygalacturonate (polyGalA) hydrogels cross-linked by Ca2+ cations via external gelation controls the loading and release rate of beta-lactoglobulin (BLG), a globular protein. Hydrogels prepared from a polyGalA/BLG solution are found to be similar to those obtained from a polyGalA solution in our previous study (Maire du Poset et al. Biomacromolecules 2019, 20 (7), 2864-2872): they exhibit similar transparencies and gradients of mechanical properties and polyGalA concentrations. The nominal BLG/polyGalA ratio of the mixtures is almost recovered within the whole mixed hydrogel despite such strong concentration gradients, except in the part of the hydrogels with the largest mesh size, where more BLG proteins are present. This gradient enables one to tune the amount of protein loaded within the hydrogel. At a local scale, the proteins are distributed evenly within the hydrogel network, as shown by small-angle neutron scattering (SANS). The release of proteins from hydrogels is driven by Fickian diffusion, and the release rate increases with the mesh size of the network, with a characteristic time of a few hours. The specific structure of these polysaccharide-based hydrogels allows for control of both the dosage and the release rate of the loaded protein and makes them good candidates for use as oral controlled-delivery systems.
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Affiliation(s)
- Aline Maire du Poset
- Université Bourgogne Franche-Comté, AgroSup Dijon, PAM UMR A 02.102, F-21000 Dijon, France.,Laboratoire Léon Brillouin, Université Paris-Saclay, CEA-Saclay, 91191 Gif-sur-Yvette, France.,Synchrotron SOLEIL, L'Orme des Merisiers, BP 48 St Aubin, 91192 Gif-sur-Yvette, France
| | - Mikaela Börjesson
- Laboratoire Léon Brillouin, Université Paris-Saclay, CEA-Saclay, 91191 Gif-sur-Yvette, France.,Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Kemivägen 10, SE-412 96 Göteborg, Sweden
| | - Céline Rameau
- Université Bourgogne Franche-Comté, AgroSup Dijon, PAM UMR A 02.102, F-21000 Dijon, France
| | | | - Adrien Lerbret
- Université Bourgogne Franche-Comté, AgroSup Dijon, PAM UMR A 02.102, F-21000 Dijon, France
| | - Camille Loupiac
- Université Bourgogne Franche-Comté, AgroSup Dijon, PAM UMR A 02.102, F-21000 Dijon, France.,Laboratoire Léon Brillouin, Université Paris-Saclay, CEA-Saclay, 91191 Gif-sur-Yvette, France
| | - Fabrice Cousin
- Laboratoire Léon Brillouin, Université Paris-Saclay, CEA-Saclay, 91191 Gif-sur-Yvette, France
| | - Ali Assifaoui
- Université Bourgogne Franche-Comté, AgroSup Dijon, PAM UMR A 02.102, F-21000 Dijon, France
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Gallego A, Cacua K, Herrera B, Cabaleiro D, Piñeiro MM, Lugo L. Experimental evaluation of the effect in the stability and thermophysical properties of water-Al2O3 based nanofluids using SDBS as dispersant agent. ADV POWDER TECHNOL 2020. [DOI: 10.1016/j.apt.2019.11.012] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Yamauchi S, Wang X, Egusa H, Sun J. High-Performance Dental Adhesives Containing an Ether-Based Monomer. J Dent Res 2019; 99:189-195. [PMID: 31861961 DOI: 10.1177/0022034519895269] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Dental adhesives are vital for the success of dental restorations. The objective of this study is to make strong and durable dental adhesives that are free from 2 symbolic methacrylate-based dental resins-2-bis[4-(2-hydroxy-3-methacryl-oxypropoxy)-phenyl]-propane (Bis-GMA) and 2-hydroxyethyl-methacrylate (HEMA)-and have equivalent/improved bonding strength and durability. We formulated, prepared, and evaluated 2 dental adhesives using mixtures of a hydrolytically stable ether-based monomer, triethylene glycol divinylbenzyl ether (TEG-DVBE), with urethane dimethacrylate (UDMA) or pyromellitic glycerol dimethacrylate. These adhesives were composed of equimolar ester-/ether-based vinyl functional groups. They were compared with Bis-GMA/HEMA-based commercial and experimental dental adhesives in terms of shear bond strength and microtensile bond strength (µTBS) to human dentin and the µTBS bond stability under extended thermocycling challenges. In addition, the resins' infiltration to dentin tubules, mechanical performance, and chemical properties were assessed by scanning electron microscopy, ISO standard flexural strength and modulus measurements, contact angle measurements, and water sorption/solubility measurements. The hybrid TEG-DVBE-containing dental adhesives generated equivalent shear bond strength and µTBS in comparison with the controls. Significantly, these adhesives outperformed the controls after being challenged by 10,000 thermocycles between 5 °C and 55 °C. Water contact angle measurements suggested that the hybrid dental adhesives were relatively more hydrophobic than the Bis-GMA/HEMA controls. However, both TEG-DVBE-containing adhesives developed more and deeper resin tags in dentin tubules and formed thicker hybrid layers at the composite-dentin interface. Furthermore, the water solubility of UDMA/TEG-DVBE resins was reduced approximately 89% in comparison with the Bis-GMA/HEMA controls. The relatively hydrophobic adhesives that achieved equivalent/enhanced bonding performance suggest great potentials in developing dental restoration with extended service life. Furthermore, the TEG-DVBE-containing materials may find wider dental applications and broader utility in medical device development.
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Affiliation(s)
- S Yamauchi
- Volpe Research Center, American Dental Association Foundation, Gaithersburg, MD, USA.,Division of Molecular and Regenerative Prosthodontics, Graduate School of Dentistry, Tohoku University, Sendai, Japan.,Department of Dental Biomaterials, School of Dentistry at Matsudo, Nihon University, Matsudo, Japan
| | - X Wang
- Volpe Research Center, American Dental Association Foundation, Gaithersburg, MD, USA
| | - H Egusa
- Division of Molecular and Regenerative Prosthodontics, Graduate School of Dentistry, Tohoku University, Sendai, Japan
| | - J Sun
- Volpe Research Center, American Dental Association Foundation, Gaithersburg, MD, USA
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Yang X, Zhang G, Prakash J, Chen Z, Gauthier M, Sun S. Chemical vapour deposition of graphene: layer control, the transfer process, characterisation, and related applications. INT REV PHYS CHEM 2019. [DOI: 10.1080/0144235x.2019.1634319] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Xiaohua Yang
- Institut National de la Recherche Scientifique-Énergie Matériaux et Télécommunications, Varennes, Canada
| | - Gaixia Zhang
- Institut National de la Recherche Scientifique-Énergie Matériaux et Télécommunications, Varennes, Canada
| | - Jai Prakash
- Institut National de la Recherche Scientifique-Énergie Matériaux et Télécommunications, Varennes, Canada
- Department of Chemistry, National Institute of Technology Hamirpur, Hamirpur, India
| | - Zhangsen Chen
- Institut National de la Recherche Scientifique-Énergie Matériaux et Télécommunications, Varennes, Canada
| | - Marc Gauthier
- Institut National de la Recherche Scientifique-Énergie Matériaux et Télécommunications, Varennes, Canada
| | - Shuhui Sun
- Institut National de la Recherche Scientifique-Énergie Matériaux et Télécommunications, Varennes, Canada
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Deshpande AA, Torris A T A, Pahari S, Menon SK, Badiger MV, Rajamohanan PR, Wadgaonkar PP, Roy S, Tonelli C. Mechanism of the formation of microphase separated water clusters in a water-mediated physical network of perfluoropolyether tetraol. SOFT MATTER 2018; 14:2339-2345. [PMID: 29493703 DOI: 10.1039/c7sm02181j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Perfluoropolyether tetraol (PFPE tetraol) possesses a hydrophobic perfluoropolyether chain in the backbone and two hydroxyl groups at each chain terminal, which facilitates the formation of hydrogen bonds with water molecules resulting in the formation an extended physical network. About 3 wt% water was required for the formation of the microphase separated physical network of PFPE tetraol. The mechanism responsible for the microphase separation of water clusters in the physical network was studied using a combination of techniques such as NMR spectroscopy, molecular dynamics (MD) simulations and DSC. MD simulation studies provided evidence for the formation of clusters in the PFPE tetraol physical network and the size of these clusters increased gradually with an increase in the extent of hydration. Both MD simulations and NMR spectroscopy studies revealed that these clusters position themselves away from the hydrophobic backbone or vice versa. The presence of intra- and inter-chain aggregation possibility among hydrophilic groups was evident. DSC results demonstrated the presence of tightly and loosely bound water molecules to the terminal hydroxyl groups of PFPE tetraol through hydrogen bonding. The data from all the three techniques established the formation of a physical network driven by hydrogen bonding between the hydrophilic end groups of PFPE tetraol and water molecules. The flexible nature of the PFPE tetraol backbone and its low solubility parameter favour clustering of water molecules at the terminal groups and result in the formation of a gel.
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Affiliation(s)
- Ashwini A Deshpande
- Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Dr Homi Bhaba Road, Pune 411008, Maharashtra, India and Academy of Scientific and Innovative Research (AcSIR), CSIR-NCL Campus, Dr Homi Bhaba Road, Pune 411008, Maharashtra, India.
| | - Arun Torris A T
- Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Dr Homi Bhaba Road, Pune 411008, Maharashtra, India
| | - Swagata Pahari
- Physical and Materials Chemistry Division, CSIR-National Chemical Laboratory, Dr Homi Bhaba Road, Pune 411008, Maharashtra, India
| | - Shamal K Menon
- Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Dr Homi Bhaba Road, Pune 411008, Maharashtra, India
| | - Manohar V Badiger
- Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Dr Homi Bhaba Road, Pune 411008, Maharashtra, India and Academy of Scientific and Innovative Research (AcSIR), CSIR-NCL Campus, Dr Homi Bhaba Road, Pune 411008, Maharashtra, India.
| | - P R Rajamohanan
- Academy of Scientific and Innovative Research (AcSIR), CSIR-NCL Campus, Dr Homi Bhaba Road, Pune 411008, Maharashtra, India. and Central NMR Facility, CSIR-National Chemical Laboratory, Dr Homi Bhaba Road, Pune 411008, Maharashtra, India
| | - Prakash P Wadgaonkar
- Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Dr Homi Bhaba Road, Pune 411008, Maharashtra, India and Academy of Scientific and Innovative Research (AcSIR), CSIR-NCL Campus, Dr Homi Bhaba Road, Pune 411008, Maharashtra, India.
| | - Sudip Roy
- Academy of Scientific and Innovative Research (AcSIR), CSIR-NCL Campus, Dr Homi Bhaba Road, Pune 411008, Maharashtra, India. and Physical and Materials Chemistry Division, CSIR-National Chemical Laboratory, Dr Homi Bhaba Road, Pune 411008, Maharashtra, India
| | - Claudio Tonelli
- Solvay Specialty Polymers, Viale Lombardia 20 - 20021 Bollate (MI), Italy.
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Han B, Teo KY. Effects of freezing on intratumoral drug transport. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2009; 2009:246-9. [PMID: 19964211 DOI: 10.1109/iembs.2009.5333804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Efficacy of many novel therapeutic agents are impaired by hindered interstitial diffusion in tumor. In the context of overcoming this drug delivery barrier, a hypothesis was postulated that freeze/thaw (F/T) may induce favorable changes of tumor tissue microstructure to facilitate the interstitial diffusion. This hypothesis may also be relevant to develop a mechanistically derived chemotherapeutic strategy for cryo-treated tumors. In the present study, this hypothesis was tested by characterizing the effects of F/T on the interstitial diffusion using an in vitro engineered tumor model (ET). The diffusion coefficients of FITC-labeled dextran was measured within the frozen/thawed and unfrozen ETs. The results showed that the diffusion coefficients increased after F/T but the extent of increase was dependent on the size of dextran. This implies that the combination of cryosurgery and chemotherapy should be designed considering the biophysical changes of tissues after freeze/thaw and the diffusion characteristics of drug molecules.
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Affiliation(s)
- Bumsoo Han
- University of Texas at Arlington, Arlington, TX 76019, USA.
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