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Pires F, Silva JC, Ferreira FC, Portugal CAM. Heparinized Acellular Hydrogels for Magnetically Induced Wound Healing Applications. ACS Appl Mater Interfaces 2024; 16:9908-9924. [PMID: 38381140 DOI: 10.1021/acsami.3c18877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/22/2024]
Abstract
The control of angiogenesis has the potential to be used for regulation of several pathological and physiological processes, which can be instrumental on the development of anticancer and wound healing therapeutical approaches. In this study, mesenchymal stem/stromal cells (MSCs) were seeded on magnetic-responsive gelatin, with or without heparin functionalization, and exposed to a static 0.08 T magnetic field (MF), for controlling their anti-inflammatory and angiogenic activity, with the aim of accelerating tissue healing. For the first time, it was examined how the amount of heparin and magnetic nanoparticles (MNPs) distributed on gelatin scaffolds affected the mechanical properties of the hydrogels and the morphology, proliferation, and secretome profiling of MSCs. The findings demonstrated that the addition of MNPs and heparin affects the hydrogel swelling capacity and renders distinct MSC proliferation rates. Additionally, MF acts as a topographical cue to guide MSCs alignment and increases the level of expression of specific genes and proteins that promote angiogenesis. The results also suggested that the presence of higher amounts of heparin (10 μg/cm3) interferes with the secretion and limits the capacity of angiogenic factors to diffuse through the hydrogel and into the culture medium. Ultimately, this study shows that acellular heparinized hydrogels efficiently retain the angiogenic growth factors released by magnetically stimulated MSCs thus rendering superior wound contraction (55.8% ± 0.4%) and cell migration rate (49.4% ± 0.4%), in comparison to nonheparinized hydrogels (35.2% ± 0.7% and 37.8% ± 0.7%, respectively). Therefore, these heparinized magnetic hydrogels can be used to facilitate angiogenesis in various forms of tissue damage including bone defects, skin wounds, and cardiovascular diseases, leading to enhanced tissue regeneration.
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Affiliation(s)
- Filipa Pires
- Instituto de Telecomunicações, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
- LAQV-REQUIMTE, Department of Chemistry, NOVA School of Science and Technology, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
| | - João Carlos Silva
- Department of Bioengineering and iBB - Institute of Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
- Associate Laboratory i4HB-Institute for Health and Bioeconomy, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Frederico Castelo Ferreira
- Department of Bioengineering and iBB - Institute of Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
- Associate Laboratory i4HB-Institute for Health and Bioeconomy, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Carla A M Portugal
- LAQV-REQUIMTE, Department of Chemistry, NOVA School of Science and Technology, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
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2
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Pereira L, Ferreira FC, Pires F, Portugal CAM. Magnetic-Responsive Liposomal Hydrogel Membranes for Controlled Release of Small Bioactive Molecules-An Insight into the Release Kinetics. Membranes (Basel) 2023; 13:674. [PMID: 37505040 PMCID: PMC10385637 DOI: 10.3390/membranes13070674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Revised: 07/05/2023] [Accepted: 07/11/2023] [Indexed: 07/29/2023]
Abstract
This work explores the unique features of magnetic-responsive hydrogels to obtain liposomal hydrogel delivery platforms capable of precise magnetically modulated drug release based on the mechanical responses of these hydrogels when exposed to an external magnetic field. Magnetic-responsive liposomal hydrogel delivery systems were prepared by encapsulation of 1,2-dipalmitoyl-sn-glycero-3-phosphocoline (DPPC) multilayered vesicles (MLVs) loaded with ferulic acid (FA), i.e., DPPC:FA liposomes, into gelatin hydrogel membranes containing dispersed iron oxide nanoparticles (MNPs), i.e., magnetic-responsive gelatin. The FA release mechanisms and kinetics from magnetic-responsive liposomal gelatin were studied and compared with those obtained with conventional drug delivery systems, e.g., free liposomal suspensions and hydrogel matrices, to access the effect of liposome entrapment and magnetic field on FA delivery. FA release from liposomal gelatin membranes was well described by the Korsmeyer-Peppas model, indicating that FA release occurred under a controlled diffusional regime, with or without magnetic stimulation. DPPC:FA liposomal gelatin systems provided smoother controlled FA release, relative to that obtained with the liposome suspensions and with the hydrogel platforms, suggesting the promising application of liposomal hydrogel systems in longer-term therapeutics. The magnetic field, with low intensity (0.08 T), was found to stimulate the FA release from magnetic-responsive liposomal gelatin systems, increasing the release rates while shifting the FA release to a quasi-Fickian mechanism. The magnetic-responsive liposomal hydrogels developed in this work offer the possibility to magnetically activate drug release from these liposomal platforms based on a non-thermal related delivery strategy, paving the way for the development of novel and more efficient applications of MLVs and liposomal delivery systems in biomedicine.
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Affiliation(s)
- Luís Pereira
- LAQV-REQUIMTE, Department of Chemistry, NOVA School of Science and Technology (FCT NOVA), Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
| | - Frederico Castelo Ferreira
- Department of Bioengineering and iBB-Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal
- Associate Laboratory i4HB-Institute for Health and Bioeconomy, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Filipa Pires
- LAQV-REQUIMTE, Department of Chemistry, NOVA School of Science and Technology (FCT NOVA), Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
| | - Carla A M Portugal
- LAQV-REQUIMTE, Department of Chemistry, NOVA School of Science and Technology (FCT NOVA), Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
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3
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Manjua AC, Cabral JMS, Portugal CAM, Ferreira FC. Magnetic stimulation of the angiogenic potential of mesenchymal stromal cells in vascular tissue engineering. Sci Technol Adv Mater 2021; 22:461-480. [PMID: 34248420 PMCID: PMC8245073 DOI: 10.1080/14686996.2021.1927834] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Revised: 05/04/2021] [Accepted: 05/06/2021] [Indexed: 06/13/2023]
Abstract
The growing prevalence of vascular diseases worldwide has emphasized the need for novel tissue-engineered options concerning the development of vascularized 3D constructs. This study reports, for the first time, the use of external magnetic fields to stimulate mesenchymal stromal cells (MSCs) to increase the production of vascular endothelial growth factor-A (VEGF-A). Polyvinylalcohol and gelatin-based scaffolds, containing iron oxide nanoparticles, were designed for optimal cell magnetic stimulation. While the application of static magnetic fields over 24 h did not impact on MSCs proliferation, viability and phenotypic identity, it significantly increased the production of VEGF-A and guided MSCs morphology and alignment. The ability to enhance MSCs angiogenic potential was demonstrated by the increase in the number of new vessels formed in the presence of MSCs conditioned media through in vitro and in vivo models. Ultimately, this study uncovers the potential to manipulate cellular processes through short-term magnetic stimulation.
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Affiliation(s)
- Ana C. Manjua
- LAQV-REQUIMTE, Departamento de Química, NOVA School of Science and Technology, Universidade Nova de Lisboa, Caparica, Portugal
- Department of Bioengineering and iBB – Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Lisboa, Portugal
| | - Joaquim M. S. Cabral
- Department of Bioengineering and iBB – Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Lisboa, Portugal
| | - Carla A. M. Portugal
- LAQV-REQUIMTE, Departamento de Química, NOVA School of Science and Technology, Universidade Nova de Lisboa, Caparica, Portugal
| | - Frederico Castelo Ferreira
- Department of Bioengineering and iBB – Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Lisboa, Portugal
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4
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Manjua AC, Cabral JMS, Ferreira FC, Portugal CAM. Magnetic Field Dynamic Strategies for the Improved Control of the Angiogenic Effect of Mesenchymal Stromal Cells. Polymers (Basel) 2021; 13:1883. [PMID: 34204049 PMCID: PMC8201388 DOI: 10.3390/polym13111883] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Revised: 05/26/2021] [Accepted: 05/31/2021] [Indexed: 01/01/2023] Open
Abstract
This work shows the ability to remotely control the paracrine performance of mesenchymal stromal cells (MSCs) in producing an angiogenesis key molecule, vascular endothelial growth factor (VEGF-A), by modulation of an external magnetic field. This work compares for the first time the application of static and dynamic magnetic fields in angiogenesis in vitro model, exploring the effect of magnetic field intensity and dynamic regimes on the VEGF-A secretion potential of MSCs. Tissue scaffolds of gelatin doped with iron oxide nanoparticles (MNPs) were used as a platform for MSC proliferation. Dynamic magnetic field regimes were imposed by cyclic variation of the magnetic field intensity in different frequencies. The effect of the magnetic field intensity on cell behavior showed that higher intensity of 0.45 T was associated with increased cell death and a poor angiogenic effect. It was observed that static and dynamic magnetic stimulation with higher frequencies led to improved angiogenic performance on endothelial cells in comparison with a lower frequency regime. This work showed the possibility to control VEGF-A secretion by MSCs through modulation of the magnetic field, offering attractive perspectives of a non-invasive therapeutic option for several diseases by revascularizing damaged tissues or inhibiting metastasis formation during cancer progression.
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Affiliation(s)
- Ana C. Manjua
- LAQV-REQUIMTE, Department of Chemistry, NOVA School of Science and Technology, Universidade Nova de Lisboa, Campus da Caparica, 2829-516 Caparica, Portugal;
- Department of Bioengineering and iBB—Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal;
| | - Joaquim M. S. Cabral
- Department of Bioengineering and iBB—Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal;
- Associate Laboratory i4HB—Institute for Health and Bioeconomy, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal
| | - Frederico Castelo Ferreira
- Department of Bioengineering and iBB—Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal;
- Associate Laboratory i4HB—Institute for Health and Bioeconomy, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal
| | - Carla A. M. Portugal
- LAQV-REQUIMTE, Department of Chemistry, NOVA School of Science and Technology, Universidade Nova de Lisboa, Campus da Caparica, 2829-516 Caparica, Portugal;
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Upadhyaya L, Semsarilar M, Quemener D, Fernández-Pacheco R, Martinez G, Coelhoso IM, Nunes SP, Crespo JG, Mallada R, Portugal CAM. Block Copolymer-Based Magnetic Mixed Matrix Membranes-Effect of Magnetic Field on Protein Permeation and Membrane Fouling. Membranes (Basel) 2021; 11:105. [PMID: 33540798 PMCID: PMC7912976 DOI: 10.3390/membranes11020105] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 01/27/2021] [Accepted: 01/28/2021] [Indexed: 12/02/2022]
Abstract
In this study, we report the impact of the magnetic field on protein permeability through magnetic-responsive, block copolymer, nanocomposite membranes with hydrophilic and hydrophobic characters. The hydrophilic nanocomposite membranes were composed of spherical polymeric nanoparticles (NPs) synthesized through polymerization-induced self-assembly (PISA) with iron oxide NPs coated with quaternized poly(2-dimethylamino)ethyl methacrylate. The hydrophobic nanocomposite membranes were prepared via nonsolvent-induced phase separation (NIPS) containing poly (methacrylic acid) and meso-2,3-dimercaptosuccinic acid-coated superparamagnetic nanoparticles (SPNPs). The permeation experiments were carried out using bovine serum albumin (BSA) as the model solute, in the absence of the magnetic field and under permanent and cyclic magnetic field conditions OFF/ON (strategy 1) and ON/OFF (strategy 2). It was observed that the magnetic field led to a lower reduction in the permeate fluxes of magnetic-responsive membranes during BSA permeation, regardless of the magnetic field strategy used, than that obtained in the absence of the magnetic field. Nevertheless, a comparative analysis of the effect caused by the two cyclic magnetic field strategies showed that strategy 2 allowed for a lower reduction of the original permeate fluxes during BSA permeation and higher protein sieving coefficients. Overall, these novel magneto-responsive block copolymer nanocomposite membranes proved to be competent in mitigating biofouling phenomena in bioseparation processes.
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Affiliation(s)
- Lakshmeesha Upadhyaya
- Advanced Membranes and Porous Materials Center (AMPM), Biological and Environmental Science and Engineering Division (BESE), King Abdullah University of Science and Technology (KAUST), 23955-6900 Thuwal, Saudi Arabia; (L.U.); (S.P.N.)
| | - Mona Semsarilar
- Institut Européen des Membranes, IEM UMR 5635, Univ Montpellier, ENSCM, CNRS, 34070 Montpellier, France; (M.S.); (D.Q.)
| | - Damien Quemener
- Institut Européen des Membranes, IEM UMR 5635, Univ Montpellier, ENSCM, CNRS, 34070 Montpellier, France; (M.S.); (D.Q.)
| | - Rodrigo Fernández-Pacheco
- Laboratorio de Microscopías Avanzadas (LMA), Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, 50018 Zaragoza, Spain;
| | - Gema Martinez
- Networking Research Centre on Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, 28029 Madrid, Spain;
- Instituto de Nanociencia y Materiales de Aragoń (INMA), CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain
| | - Isabel M. Coelhoso
- LAQV-REQUIMTE, Departamento de Química, Campus de Caparica, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal; (I.M.C.); (J.G.C.)
| | - Suzana P. Nunes
- Advanced Membranes and Porous Materials Center (AMPM), Biological and Environmental Science and Engineering Division (BESE), King Abdullah University of Science and Technology (KAUST), 23955-6900 Thuwal, Saudi Arabia; (L.U.); (S.P.N.)
| | - João G. Crespo
- LAQV-REQUIMTE, Departamento de Química, Campus de Caparica, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal; (I.M.C.); (J.G.C.)
| | - Reyes Mallada
- Instituto de Nanociencia y Materiales de Aragoń (INMA), CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain
| | - Carla A. M. Portugal
- LAQV-REQUIMTE, Departamento de Química, Campus de Caparica, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal; (I.M.C.); (J.G.C.)
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6
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Manjua AC, Alves VD, Crespo JG, Portugal CAM. Magnetic Responsive PVA Hydrogels for Remote Modulation of Protein Sorption. ACS Appl Mater Interfaces 2019; 11:21239-21249. [PMID: 31141340 DOI: 10.1021/acsami.9b03146] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
This work shows the ability to reversibly modulate the hydrophilicity of the hydrogels doped with iron oxide nanoparticles (MNPs) in a noninvasive way when exposed to a cyclic variation of the intensity (ON/OFF) of an external magnetic field. A reversible switching of surface contact angles was observed for magnetic PVA hydrogels when exposed to consecutive variation of the magnetic field intensity between 0 and 0.08 T. Motivated by the magnetic dependence of the hydrophilicity of these hybrid hydrogels, the impact of the magnetic field on protein sorption was also evaluated. The noninvasive regulation of protein sorption-released mechanisms was achieved by ON/OFF magnetic field switches, suggesting the possible influence of magnetic-induced hydrogel shrinking effect and changes of surface wettability on protein sorption. The capacity to magnetically modulate surface wettability and protein sorption make these magnetic hydrogels promising candidates for development of functional devices for tissue engineering, drug release applications, or biosensor systems, where the control of protein sorption and mobility are essential steps to improve the efficiency of these processes.
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Affiliation(s)
- Ana C Manjua
- LAQV-Requimte , FCT-Universidade Nova de Lisboa , Campus da Caparica, 2829-516 Caparica , Portugal
- Department of Bioengineering and iBB-Institute for Bioengineering and Biosciences , IST-Universidade de Lisboa , Av. Rovisco Pais , 1049-001 Lisboa , Portugal
| | - Vitor D Alves
- LEAF-Linking Landscape, Environment, Agriculture and Food, Instituto Superior de Agronomia , Universidade de Lisboa , Tapada da Ajuda , 1349-017 Lisboa , Portugal
| | - João G Crespo
- LAQV-Requimte , FCT-Universidade Nova de Lisboa , Campus da Caparica, 2829-516 Caparica , Portugal
| | - Carla A M Portugal
- LAQV-Requimte , FCT-Universidade Nova de Lisboa , Campus da Caparica, 2829-516 Caparica , Portugal
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7
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Upadhyaya L, Egbosimba C, Qian X, Wickramasinghe R, Fernández-Pacheco R, Coelhoso IM, Portugal CAM, Crespo JG, Quemener D, Semsarilar M. Influence of Magnetic Nanoparticles on PISA Preparation of Poly(Methacrylic Acid)-b
-Poly(Methylmethacrylate) Nano-Objects. Macromol Rapid Commun 2018; 40:e1800333. [DOI: 10.1002/marc.201800333] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 06/05/2018] [Indexed: 01/03/2023]
Affiliation(s)
- Lakshmeesha Upadhyaya
- Department of Biomedical Engineering; University of Arkansas; Fayetteville AR 72701 USA
| | - Chidubem Egbosimba
- Department of Biomedical Engineering; University of Arkansas; Fayetteville AR 72701 USA
| | - Xianghong Qian
- Department of Biomedical Engineering; University of Arkansas; Fayetteville AR 72701 USA
| | - Ranil Wickramasinghe
- Ralph E Martin Department of Chemical Engineering; University of Arkansas; Fayetteville AR 72701 USA
| | - Rodrigo Fernández-Pacheco
- Laboratorio de Microscopías Avanzadas; Instituto de Nanociencia de Aragón, Edificio I+D; Campus Rio Ebro; Universidad de Zaragoza; 50018 Zaragoza Spain
| | - Isabel M. Coelhoso
- LAQV - REQUIMTE; Departamento de Química; Faculdade de Ciências e Tecnologia; Universidade Nova de Lisboa; Campus de Caparica; 2829-516 Caparica Portugal
| | - Carla A. M. Portugal
- LAQV - REQUIMTE; Departamento de Química; Faculdade de Ciências e Tecnologia; Universidade Nova de Lisboa; Campus de Caparica; 2829-516 Caparica Portugal
| | - João G. Crespo
- LAQV - REQUIMTE; Departamento de Química; Faculdade de Ciências e Tecnologia; Universidade Nova de Lisboa; Campus de Caparica; 2829-516 Caparica Portugal
| | - Damien Quemener
- Institut Européen des Membranes; IEM, UMR 5635; Université de Montpellier, ENSCM, CNRS, Place Eugène Bataillon; 34095 Montpellier Cedex 05 France
| | - Mona Semsarilar
- Institut Européen des Membranes; IEM, UMR 5635; Université de Montpellier, ENSCM, CNRS, Place Eugène Bataillon; 34095 Montpellier Cedex 05 France
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8
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Upadhyaya L, Semsarilar M, Fernández-Pacheco R, Martinez G, Mallada R, Coelhoso IM, Portugal CAM, Crespo JG, Deratani A, Quemener D. Nano-structured magneto-responsive membranes from block copolymers and iron oxide nanoparticles. Polym Chem 2017. [DOI: 10.1039/c6py01870j] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Preparation of porous membranes from PMAA-b-PMMA copolymers and magnetic iron oxide nanoparticles and their performance under magnetic fields.
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Affiliation(s)
- Lakshmeesha Upadhyaya
- Institut Européen des Membranes/Université of Montpellier
- 34095 Montpellier
- France
- Department of Chemical and Environmental Engineering and Aragon Nanoscience Institute
- 50018 Zaragoza
| | - Mona Semsarilar
- Institut Européen des Membranes/Université of Montpellier
- 34095 Montpellier
- France
| | | | - Gema Martinez
- Networking Research Centre on Bioengineering
- Biomaterials and Nanomedicine
- CIBER-BBN
- 28029 Madrid
- Spain
| | - Reyes Mallada
- Department of Chemical and Environmental Engineering and Aragon Nanoscience Institute
- 50018 Zaragoza
- Spain
| | - Isabel M. Coelhoso
- LAQV - REQUIMTE
- Departamento de Química
- Faculdade de Ciências e Tecnologia
- Universidade Nova de Lisboa
- 2829-516 Caparica
| | - Carla A. M. Portugal
- LAQV - REQUIMTE
- Departamento de Química
- Faculdade de Ciências e Tecnologia
- Universidade Nova de Lisboa
- 2829-516 Caparica
| | - João G. Crespo
- LAQV - REQUIMTE
- Departamento de Química
- Faculdade de Ciências e Tecnologia
- Universidade Nova de Lisboa
- 2829-516 Caparica
| | - André Deratani
- Institut Européen des Membranes/Université of Montpellier
- 34095 Montpellier
- France
| | - Damien Quemener
- Institut Européen des Membranes/Université of Montpellier
- 34095 Montpellier
- France
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9
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Daniel CI, Vaca Chávez F, Portugal CAM, Crespo JG, Sebastião PJ. 1H NMR Relaxation Study of a Magnetic Ionic Liquid as a Potential Contrast Agent. J Phys Chem B 2015; 119:11740-7. [DOI: 10.1021/acs.jpcb.5b04772] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Carla I. Daniel
- REQUIMTE/LAQV,
Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Lisbon, Portugal
| | - Fabián Vaca Chávez
- FaMAF, Universidad Nacional de Córdoba, IFEG CONICET, X5016LAE Córdoba, Argentina
| | - Carla A. M. Portugal
- REQUIMTE/LAQV,
Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Lisbon, Portugal
| | - João G. Crespo
- REQUIMTE/LAQV,
Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Lisbon, Portugal
| | - Pedro J. Sebastião
- Center
of Physics and Engineering of Advanced Materials, Departamento de
Física Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
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10
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Scovazzo P, Portugal CAM, Rosatella AA, Afonso CAM, Crespo JG. Hydraulic pressures generated in magnetic ionic liquids by paramagnetic fluid/air interfaces inside of uniform tangential magnetic fields. J Colloid Interface Sci 2014; 428:16-23. [PMID: 24910029 DOI: 10.1016/j.jcis.2014.04.023] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2013] [Revised: 04/09/2014] [Accepted: 04/12/2014] [Indexed: 11/26/2022]
Abstract
HYPOTHESIS Magnetic Ionic Liquid (MILs), novel magnetic molecules that form "pure magnetic liquids," will follow the Ferrohydrodynamic Bernoulli Relationship. Based on recent literature, the modeling of this fluid system is an open issue and potentially controversial. EXPERIMENTS We imposed uniform magnetic fields parallel to MIL/air interfaces where the capillary forces were negligible, the Quincke Problem. The size and location of the bulk fluid as well as the size and location of the fluid/air interface inside of the magnetic field were varied. MIL properties varied included the density, magnetic susceptibility, chemical structure, and magnetic element. FINDINGS Uniform tangential magnetic fields pulled the MILs up counter to gravity. The forces per area were not a function of the volume, the surface area inside of the magnetic field, or the volume displacement. However, the presence of fluid/air interfaces was necessary for the phenomena. The Ferrohydrodynamic Bernoulli Relationship predicted the phenomena with the forces being directly related to the fluid's volumetric magnetic susceptibility and the square of the magnetic field strength. [emim][FeCl4] generated the greatest hydraulic head (64-mm or 910 Pa at 1.627 Tesla). This work could aid in experimental design, when free surfaces are involved, and in the development of MIL applications.
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Affiliation(s)
- Paul Scovazzo
- Department of Chemical Engineering, University of Mississippi, Oxford, MS, USA.
| | - Carla A M Portugal
- REQUIMTE-CQFB, Departamento de Quimica, Faculdade de Ciencias e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal.
| | - Andreia A Rosatella
- Research Institute for Medicines and Pharmaceutical Sciences (iMED.UL), Faculdade de Farmácia, Universidade de Lisboa, Lisboa, Portugal.
| | - Carlos A M Afonso
- Research Institute for Medicines and Pharmaceutical Sciences (iMED.UL), Faculdade de Farmácia, Universidade de Lisboa, Lisboa, Portugal.
| | - João G Crespo
- REQUIMTE-CQFB, Departamento de Quimica, Faculdade de Ciencias e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal.
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11
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Daniel CI, Vaca Chávez F, Feio G, Portugal CAM, Crespo JG, Sebastião PJ. 1H NMR Relaxometry, Viscometry, and PFG NMR Studies of Magnetic and Nonmagnetic Ionic Liquids. J Phys Chem B 2013; 117:11877-84. [DOI: 10.1021/jp4078536] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Carla I. Daniel
- REQUIMTE/CQFB,
Departamento de Quı́mica, Faculdade de Cien̂cias
e Tecnologia, Universidade Nova de Lisboa, Campus de Caparica, 2829-516 Caparica, Portugal
| | - Fabián Vaca Chávez
- Condensed
Matter Physics Centre, University of Lisbon, Av. Prof. Gama Pinto 2, 1649-003 Lisbon, Portugal
| | - Gabriel Feio
- CENIMAT
- Centro de Investigação em Materiais, Faculdade de
Cien̂cias e Tecnologia, Universidade Nova de Lisboa, Campus da Caparica, 2829-516 Caparica, Portugal
| | - Carla A. M. Portugal
- REQUIMTE/CQFB,
Departamento de Quı́mica, Faculdade de Cien̂cias
e Tecnologia, Universidade Nova de Lisboa, Campus de Caparica, 2829-516 Caparica, Portugal
| | - João G. Crespo
- REQUIMTE/CQFB,
Departamento de Quı́mica, Faculdade de Cien̂cias
e Tecnologia, Universidade Nova de Lisboa, Campus de Caparica, 2829-516 Caparica, Portugal
| | - Pedro J. Sebastião
- Condensed
Matter Physics Centre, University of Lisbon, Av. Prof. Gama Pinto 2, 1649-003 Lisbon, Portugal
- Departamento
de Física, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco
Pais, 1049-001 Lisbon, Portugal
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Galinha CF, Carvalho G, Portugal CAM, Guglielmi G, Reis MAM, Crespo JG. Multivariate statistically-based modelling of a membrane bioreactor for wastewater treatment using 2D fluorescence monitoring data. Water Res 2012; 46:3623-3636. [PMID: 22572122 DOI: 10.1016/j.watres.2012.04.010] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2012] [Revised: 04/04/2012] [Accepted: 04/05/2012] [Indexed: 05/31/2023]
Abstract
This work presents the development of multivariate statistically-based models for monitoring several key performance parameters of membrane bioreactors (MBR) for wastewater treatment. This non-mechanistic approach enabled the deconvolution of 2D fluorescence spectroscopy data, a powerful technique that has previously been shown to capture important information regarding MBR performance. Projection to latent structure (PLS) modelling was used to integrate 2D fluorescence data, after compression through parallel factor analysis (PARAFAC), with operation and analytical data to describe an MBR fouling indicator (transmembrane pressure, TMP), five descriptors of the effluent quality (total COD, soluble COD, concentration of nitrite and nitrate, total nitrogen and total phosphorus in the permeate) and the biomass concentration in the bioreactor (MLSS). A multilinear correlation was successfully established for TMP, CODtp and CODsp, whereas the optimised models for the remaining outputs included quadratic and interaction terms of the compressed 2D fluorescence matrices. Additionally, the coefficients of the optimised models revealed important contributions of some of the input parameters to the modelled outputs. This work demonstrates the applicability of 2D fluorescence and statistically-based models to simultaneously monitor multiple key MBR performance parameters with minimal analytical effort. This is a promising approach to facilitate the implementation of MBR technology for wastewater treatment.
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Affiliation(s)
- Claudia F Galinha
- REQUIMTE/CQFB, Chemistry Department, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
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13
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Galinha CF, Carvalho G, Portugal CAM, Guglielmi G, Oliveira R, Crespo JG, Reis MAM. Real-time monitoring of membrane bioreactors with 2D-fluorescence data and statistically based models. Water Sci Technol 2011; 63:1381-1388. [PMID: 21508540 DOI: 10.2166/wst.2011.195] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The application of membrane bioreactors (MBR) for wastewater treatment is growing worldwide due to their compactness and high effluent quality. However, membrane fouling, mostly associated to biological products, can reduce MBR performance. Therefore, it is important to monitor MBRs as close to real-time as possible to accelerate control actions for maximal biological and membrane performance. 2D-fluorescence spectroscopy is a promising on-line tool to simultaneously monitor wastewater treatment efficiency and the formation of potential biological fouling agents. In this study, 2D-fluorescence data obtained from the wastewater and the permeate of a MBR was successfully modelled using projection to latent structures (PLS) to monitor variations in the influent and effluent total chemical oxygen demand (COD). Analysis of the results also indicated that humic acids and proteins highly contributed to the measured COD in both streams. Nevertheless, this approach was not valid for other performance parameters of the MBR system (such as influent and effluent ammonia and phosphorus), which is usually characterised through a high number of analytical and operating parameters. Principal component analysis (PCA) was thus used to find possible correlations between these parameters, in an attempt to reduce the analytical effort required for full MBR characterisation and to reduce the time frame necessary to obtain monitoring results. The 3 first principal components, capturing 57% of the variance, indicated and confirmed expected relationships between the assessed parameters. However, this approach alone could not provide robust enough correlations to enable the elimination of parameters for process description (PCA loadings ≤ 0.5). Nevertheless, it is possible that the information captured by 2D-fluorescence spectroscopy could replace some of the analytical and operating parameters, since this technique was able to successfully describe influent and effluent total COD. It is thus proposed that combined modelling of 2D-fluorescence data and selected performance/operating parameters should be further explored for efficient MBR monitoring aiming at rapid process control.
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Affiliation(s)
- C F Galinha
- Chemistry Dept., Universidade Nova de Lisboa, Caparica, Portugal.
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Portugal CAM, Crespo JG, Lima JC. Anomalous “unquenching” of the fluorescence decay times of β-lactoglobulin induced by the known quencher acrylamide. Journal of Photochemistry and Photobiology B: Biology 2006; 82:117-26. [PMID: 16288883 DOI: 10.1016/j.jphotobiol.2005.09.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2005] [Revised: 08/22/2005] [Accepted: 09/09/2005] [Indexed: 10/25/2022]
Abstract
Picosecond time-resolved fluorescence, together with the addition of quenching agents, was employed to discriminate the fluorescence contributions of the two tryptophans of beta-lactoglobulin (Trp19 and Trp61) to the fluorescence decays of the protein. The fluorescence decays of beta-lactoglobulin at pH 3, 5 and 8 are best fitted using sums of three exponentials and show a dominant contribution (98%) of the components associated with the buried Trp19, which decays according to a double exponential function. The addition of acrylamide (0.05 M) causes an increase of the decay times associated with Trp19. This effect is observed at all pH values studied, but the effect is stronger at pH 3 and pH 5, than at pH 8. The unexpected increase of the decay times of Trp19 and the variation of the respective amplitudes were rationalized in terms of alterations of Trp19 mobility. The hindrance of Trp19 upon acrylamide binding was also monitored and supported by fluorescence anisotropy measurements.
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Affiliation(s)
- Carla A M Portugal
- Requimte-CQFB, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Quinta da Torre, Monte da Caparica, 2825-516 Caparica, Portugal
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Batista AP, Portugal CAM, Sousa I, Crespo JG, Raymundo A. Accessing gelling ability of vegetable proteins using rheological and fluorescence techniques. Int J Biol Macromol 2005; 36:135-43. [PMID: 15996729 DOI: 10.1016/j.ijbiomac.2005.04.003] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2004] [Revised: 04/08/2005] [Accepted: 04/08/2005] [Indexed: 11/24/2022]
Abstract
This work aims to present a comprehensive study about the macroscopic characteristics of globular vegetable proteins, in terms of their gelling ability, by understanding their molecular behaviour, when submitted to a thermal gelling process. The gels of soy, pea and lupin proteins were characterized by rheological techniques. Gelation kinetics, mechanical spectra, as well as the texture of these gels were analyzed and compared. Additionally, capillary viscometry, steady-state fluorescence and fluorescence anisotropy were used to monitor the structural changes induced by the thermal denaturation, which constitutes the main condition for the formation of a gel structure. Based on these techniques it was possible to establish a relationship between the gelling ability of each protein isolate and their structural resistance to thermal unfolding, enabling us to explain the weakest and the strongest gelling ability observed for lupin and soy proteins isolates, respectively.
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Affiliation(s)
- Ana Paula Batista
- CIEAB, Instituto Piaget-ISEIT de Almada, Quinta da Arreinela de Cima, 2800-305 Almada, Portugal
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