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De Vitis E, Stanzione A, Romano A, Quattrini A, Gigli G, Moroni L, Gervaso F, Polini A. The Evolution of Technology-Driven In Vitro Models for Neurodegenerative Diseases. Adv Sci (Weinh) 2024; 11:e2304989. [PMID: 38366798 DOI: 10.1002/advs.202304989] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 01/15/2024] [Indexed: 02/18/2024]
Abstract
The alteration in the neural circuits of both central and peripheral nervous systems is closely related to the onset of neurodegenerative disorders (NDDs). Despite significant research efforts, the knowledge regarding NDD pathological processes, and the development of efficacious drugs are still limited due to the inability to access and reproduce the components of the nervous system and its intricate microenvironment. 2D culture systems are too simplistic to accurately represent the more complex and dynamic situation of cells in vivo and have therefore been surpassed by 3D systems. However, both models suffer from various limitations that can be overcome by employing two innovative technologies: organ-on-chip and 3D printing. In this review, an overview of the advantages and shortcomings of both microfluidic platforms and extracellular matrix-like biomaterials will be given. Then, the combination of microfluidics and hydrogels as a new synergistic approach to study neural disorders by analyzing the latest advances in 3D brain-on-chip for neurodegenerative research will be explored.
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Affiliation(s)
- Eleonora De Vitis
- CNR NANOTEC-Institute of Nanotechnology, Campus Ecotekn, via Monteroni, Lecce, 73100, Italy
| | - Antonella Stanzione
- CNR NANOTEC-Institute of Nanotechnology, Campus Ecotekn, via Monteroni, Lecce, 73100, Italy
| | - Alessandro Romano
- IRCCS San Raffaele Scientific Institute, Division of Neuroscience, Institute of Experimental Neurology, Milan, 20132, Italy
| | - Angelo Quattrini
- IRCCS San Raffaele Scientific Institute, Division of Neuroscience, Institute of Experimental Neurology, Milan, 20132, Italy
| | - Giuseppe Gigli
- CNR NANOTEC-Institute of Nanotechnology, Campus Ecotekn, via Monteroni, Lecce, 73100, Italy
- Dipartimento di Medicina Sperimentale, Università Del Salento, Campus Ecotekne, via Monteroni, Lecce, 73100, Italy
| | - Lorenzo Moroni
- CNR NANOTEC-Institute of Nanotechnology, Campus Ecotekn, via Monteroni, Lecce, 73100, Italy
- Complex Tissue Regeneration, Maastricht University, Universiteitssingel 40, Maastricht, 6229 ER, Netherlands
| | - Francesca Gervaso
- CNR NANOTEC-Institute of Nanotechnology, Campus Ecotekn, via Monteroni, Lecce, 73100, Italy
| | - Alessandro Polini
- CNR NANOTEC-Institute of Nanotechnology, Campus Ecotekn, via Monteroni, Lecce, 73100, Italy
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2
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Canciani B, Semeraro F, Herrera Millar VR, Gervaso F, Polini A, Stanzione A, Peretti GM, Di Giancamillo A, Mangiavini L. In Vitro and In Vivo Biocompatibility Assessment of a Thermosensitive Injectable Chitosan-Based Hydrogel for Musculoskeletal Tissue Engineering. Int J Mol Sci 2023; 24:10446. [PMID: 37445622 DOI: 10.3390/ijms241310446] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 06/06/2023] [Accepted: 06/16/2023] [Indexed: 07/15/2023] Open
Abstract
Musculoskeletal impairments, especially cartilage and meniscus lesions, are some of the major contributors to disabilities. Thus, novel tissue engineering strategies are being developed to overcome these issues. In this study, the aim was to investigate the biocompatibility, in vitro and in vivo, of a thermosensitive, injectable chitosan-based hydrogel loaded with three different primary mesenchymal stromal cells. The cell types were human adipose-derived mesenchymal stromal cells (hASCs), human bone marrow stem cells (hBMSCs), and neonatal porcine infrapatellar fat-derived cells (IFPCs). For the in vitro study, the cells were encapsulated in sol-phase hydrogel, and then, analyzed via live/dead assay at 1, 4, 7, and 14 days to compare their capacity to survive in the hydrogel. To assess biocompatibility in vivo, cellularized scaffolds were subcutaneously implanted in the dorsal pouches of nude mice and analyzed at 4 and 12 weeks. Our data showed that all the different cell types survived (the live cell percentages were between 60 and 80 at all time points in vitro) and proliferated in the hydrogel (from very few at 4 weeks to up to 30% at 12 weeks in vivo); moreover, the cell-laden hydrogels did not trigger an immune response in vivo. Hence, our hydrogel formulation showed a favorable profile in terms of safety and biocompatibility, and it may be applied in tissue engineering strategies for cartilage and meniscus repair.
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Affiliation(s)
- Barbara Canciani
- IRCCS Ospedale Galeazzi-Sant'Ambrogio, Via Cristina Belgioioso 173, 20161 Milan, Italy
| | - Francesca Semeraro
- School of Medicine, Vita-Salute San Raffaele University, Via Olgettina 58, 20132 Milan, Italy
| | | | - Francesca Gervaso
- CNR NANOTEC-Institute of Nanotechnology, c/o Campus Ecotekne, Via Monteroni, 73100 Lecce, Italy
| | - Alessandro Polini
- CNR NANOTEC-Institute of Nanotechnology, c/o Campus Ecotekne, Via Monteroni, 73100 Lecce, Italy
| | - Antonella Stanzione
- CNR NANOTEC-Institute of Nanotechnology, c/o Campus Ecotekne, Via Monteroni, 73100 Lecce, Italy
| | - Giuseppe Michele Peretti
- IRCCS Ospedale Galeazzi-Sant'Ambrogio, Via Cristina Belgioioso 173, 20161 Milan, Italy
- Department of Biomedical Sciences for Health, University of Milan, Via Mangiagalli 31, 20133 Milan, Italy
| | - Alessia Di Giancamillo
- Department of Biomedical Sciences for Health, University of Milan, Via Mangiagalli 31, 20133 Milan, Italy
| | - Laura Mangiavini
- IRCCS Ospedale Galeazzi-Sant'Ambrogio, Via Cristina Belgioioso 173, 20161 Milan, Italy
- Department of Biomedical Sciences for Health, University of Milan, Via Mangiagalli 31, 20133 Milan, Italy
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3
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Rizzo R, Onesto V, Morello G, Iuele H, Scalera F, Forciniti S, Gigli G, Polini A, Gervaso F, del Mercato LL. pH-sensing hybrid hydrogels for non-invasive metabolism monitoring in tumor spheroids. Mater Today Bio 2023; 20:100655. [PMID: 37234366 PMCID: PMC10205545 DOI: 10.1016/j.mtbio.2023.100655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 04/14/2023] [Accepted: 05/01/2023] [Indexed: 05/27/2023] Open
Abstract
The constant increase in cancer incidence and mortality pushes biomedical research towards the development of in vitro 3D systems able to faithfully reproduce and effectively probe the tumor microenvironment. Cancer cells interact with this complex and dynamic architecture, leading to peculiar tumor-associated phenomena, such as acidic pH conditions, rigid extracellular matrix, altered vasculature, hypoxic condition. Acidification of extracellular pH, in particular, is a well-known feature of solid tumors, correlated to cancer initiation, progression, and resistance to therapies. Monitoring local pH variations, non-invasively, during cancer growth and in response to drug treatment becomes extremely important for understanding cancer mechanisms. Here, we describe a simple and reliable pH-sensing hybrid system, based on a thermoresponsive hydrogel embedding optical pH sensors, that we specifically apply for non-invasive and accurate metabolism monitoring in colorectal cancer (CRC) spheroids. First, the physico-chemical properties of the hybrid sensing platform, in terms of stability, rheological and mechanical properties, morphology and pH sensitivity, were fully characterized. Then, the proton gradient distribution in the spheroids proximity, in the presence or absence of drug treatment, was quantified over time by time lapse confocal light scanning microscopy and automated segmentation pipeline, highlighting the effects of the drug treatment in the extracellular pH. In particular, in the treated CRC spheroids the acidification of the microenvironment resulted faster and more pronounced over time. Moreover, a pH gradient distribution was detected in the untreated spheroids, with more acidic values in proximity of the spheroids, resembling the cell metabolic features observed in vivo in the tumor microenvironment. These findings promise to shed light on mechanisms of regulation of proton exchanges by cellular metabolism being essential for the study of solid tumors in 3D in vitro models and the development of personalized medicine approaches.
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Affiliation(s)
- Riccardo Rizzo
- Institute of Nanotechnology, National Research Council (CNR-NANOTEC), C/o Campus Ecotekne, Via Monteroni, 73100, Lecce, Italy
| | - Valentina Onesto
- Institute of Nanotechnology, National Research Council (CNR-NANOTEC), C/o Campus Ecotekne, Via Monteroni, 73100, Lecce, Italy
| | - Giulia Morello
- Institute of Nanotechnology, National Research Council (CNR-NANOTEC), C/o Campus Ecotekne, Via Monteroni, 73100, Lecce, Italy
- Department of Mathematics and Physics ‘‘Ennio De Giorgi”, University of Salento, C/o Campus Ecotekne, Via Monteroni, 73100, Lecce, Italy
| | - Helena Iuele
- Institute of Nanotechnology, National Research Council (CNR-NANOTEC), C/o Campus Ecotekne, Via Monteroni, 73100, Lecce, Italy
| | - Francesca Scalera
- Institute of Nanotechnology, National Research Council (CNR-NANOTEC), C/o Campus Ecotekne, Via Monteroni, 73100, Lecce, Italy
| | - Stefania Forciniti
- Institute of Nanotechnology, National Research Council (CNR-NANOTEC), C/o Campus Ecotekne, Via Monteroni, 73100, Lecce, Italy
| | - Giuseppe Gigli
- Institute of Nanotechnology, National Research Council (CNR-NANOTEC), C/o Campus Ecotekne, Via Monteroni, 73100, Lecce, Italy
- Department of Mathematics and Physics ‘‘Ennio De Giorgi”, University of Salento, C/o Campus Ecotekne, Via Monteroni, 73100, Lecce, Italy
| | - Alessandro Polini
- Institute of Nanotechnology, National Research Council (CNR-NANOTEC), C/o Campus Ecotekne, Via Monteroni, 73100, Lecce, Italy
| | - Francesca Gervaso
- Institute of Nanotechnology, National Research Council (CNR-NANOTEC), C/o Campus Ecotekne, Via Monteroni, 73100, Lecce, Italy
| | - Loretta L. del Mercato
- Institute of Nanotechnology, National Research Council (CNR-NANOTEC), C/o Campus Ecotekne, Via Monteroni, 73100, Lecce, Italy
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4
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Nitti P, Palazzo B, Gallo N, Scalera F, Sannino A, Gervaso F. Smooth‐rough asymmetric
PLGA
structure made of dip coating membrane and electrospun nanofibrous scaffolds meant to be used for guided tissue regeneration of periodontium. POLYM ENG SCI 2022. [DOI: 10.1002/pen.25988] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Paola Nitti
- Biomaterials Laboratory, Department of Engineering for Innovation University of Salento Lecce
| | - Barbara Palazzo
- Ghimas S.p.A., c/o Dhitech Scarl Lecce Italy
- ENEA Division for Sustainable Materials Research Centre of Brindisi Brindisi Italy
| | - Nunzia Gallo
- Biomaterials Laboratory, Department of Engineering for Innovation University of Salento Lecce
| | - Francesca Scalera
- Biomaterials Laboratory, Department of Engineering for Innovation University of Salento Lecce
- Department of Physical Sciences and Technologies of Matter Institute of Nanotechnology‐CNR Lecce Italy
| | - Alessandro Sannino
- Biomaterials Laboratory, Department of Engineering for Innovation University of Salento Lecce
| | - Francesca Gervaso
- Biomaterials Laboratory, Department of Engineering for Innovation University of Salento Lecce
- Department of Physical Sciences and Technologies of Matter Institute of Nanotechnology‐CNR Lecce Italy
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5
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Scialla S, Gullotta F, Izzo D, Palazzo B, Scalera F, Martin I, Sannino A, Gervaso F. Genipin-crosslinked collagen scaffolds inducing chondrogenesis: a mechanical and biological characterization. J Biomed Mater Res A 2022; 110:1372-1385. [PMID: 35262240 DOI: 10.1002/jbm.a.37379] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 02/21/2022] [Accepted: 02/26/2022] [Indexed: 12/14/2022]
Abstract
Articular cartilage degeneration is still an unsolved issue owing to its weak repairing capabilities, which usually result in fibrocartilage tissue formation. This fibrous tissue lacks of structural and bio-mechanical properties, degrading over time. Currently, arthroscopic techniques and autologous transplantation are the most used clinical procedures. However, rather than restoring cartilage integrity, these methods only postpone further cartilage deterioration. Therefore, tissue engineering strategies aimed at selecting scaffolds that remarkably support the chondrogenic differentiation of human mesenchymal stem cells (hMSCs) could represent a promising solution, but they are still challenging for researchers. In this study, the influence of two different genipin (Gp) crosslinking routes on collagen (Coll)-based scaffolds in terms of hMSCs chondrogenic differentiation and biomechanical performances was investigated. Three-dimensional (3D) porous Coll scaffolds were fabricated by freeze-drying techniques and were crosslinked with Gp following a "two-step" and an in "bulk" procedure, in order to increase the physico-mechanical stability of the structure. Chondrogenic differentiation efficacy of hMSCs and biomechanical behavior under compression forces through unconfined stress-strain tests were assessed. Coll/Gp scaffolds revealed an isotropic and highly homogeneous pore distribution along with an increase in the stiffness, also supported by the increase in the Coll denaturation temperature (Td = 57-63°C) and a significant amount of Coll and GAG deposition during the 3 weeks of chondrogenic culture. In particular, the presence of Gp in "bulk" led to a more uniform and homogenous chondral-like matrix deposition by hMSCs if compared to the results obtained from the Gp "two-step" functionalization procedure.
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Affiliation(s)
- Stefania Scialla
- Department of Engineering for Innovation, University of Salento, Lecce, Italy.,Institute of Polymers, Composites and Biomaterials - National Research Council, Naples, Italy
| | - Fabiana Gullotta
- Department of Engineering for Innovation, University of Salento, Lecce, Italy.,Department of Biomedicine, University Hospital Basel, University of Basel, Basel, Switzerland
| | - Daniela Izzo
- Department of Engineering for Innovation, University of Salento, Lecce, Italy
| | - Barbara Palazzo
- Department of Engineering for Innovation, University of Salento, Lecce, Italy.,ENEA, Division for Sustainable Materials - Research Centre of Brindisi, Brindisi, Italy
| | - Francesca Scalera
- Department of Engineering for Innovation, University of Salento, Lecce, Italy.,CNR Nanotec - Institute of Nanotechnology, Lecce, Italy
| | - Ivan Martin
- Department of Biomedicine, University Hospital Basel, University of Basel, Basel, Switzerland
| | - Alessandro Sannino
- Department of Engineering for Innovation, University of Salento, Lecce, Italy
| | - Francesca Gervaso
- Department of Engineering for Innovation, University of Salento, Lecce, Italy.,CNR Nanotec - Institute of Nanotechnology, Lecce, Italy
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6
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Morello G, Quarta A, Gaballo A, Moroni L, Gigli G, Polini A, Gervaso F. A thermo-sensitive chitosan/pectin hydrogel for long-term tumor spheroid culture. Carbohydr Polym 2021; 274:118633. [PMID: 34702456 DOI: 10.1016/j.carbpol.2021.118633] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 08/30/2021] [Accepted: 08/31/2021] [Indexed: 01/11/2023]
Abstract
Hydrogels represent a key element in the development of in vitro tumor models, by mimicking the typical 3D tumor architecture in a physicochemical manner and allowing the study of tumor mechanisms. Here we developed a thermo-sensitive, natural polymer-based hydrogel, where chitosan and pectin were mixed and, after a weak base-induced chitosan gelation, a stable semi-Interpenetrating Polymer Network formed. This resulted thermo-responsive at 37 °C, injectable at room temperature, stable up to 6 weeks in vitro, permeable to small/medium-sized molecules (3 to 70 kDa) and suitable for cell-encapsulation. Tunable mechanical and permeability properties were obtained by varying the polymer content. Optimized formulations successfully supported the formation and growth of human colorectal cancer spheroids up to 44 days of culture. The spheroid dimension and density were influenced by the semi-IPN stiffness and permeability. These encouraging results would allow the implementation of faithful tumor models for the study and development of personalized oncological treatments.
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Affiliation(s)
- Giulia Morello
- Institute of Nanotechnology, CNR, Lecce 73100, Italy; Dipartimento di Matematica e Fisica E. de Giorgi, Università Del Salento, Lecce 73100, Italy
| | | | | | - Lorenzo Moroni
- Institute of Nanotechnology, CNR, Lecce 73100, Italy; Department of Complex Tissue Regeneration, MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, Maastricht 6229ER, the Netherlands
| | - Giuseppe Gigli
- Institute of Nanotechnology, CNR, Lecce 73100, Italy; Dipartimento di Matematica e Fisica E. de Giorgi, Università Del Salento, Lecce 73100, Italy
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7
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Stanzione A, Polini A, La Pesa V, Quattrini A, Romano A, Gigli G, Moroni L, Gervaso F. Thermosensitive chitosan-based hydrogels supporting motor neuron-like NSC-34 cell differentiation. Biomater Sci 2021; 9:7492-7503. [PMID: 34642708 DOI: 10.1039/d1bm01129d] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Motor neuron diseases are neurodegenerative diseases that predominantly affect the neuromuscular system. To date, there are no valid therapeutic treatments for such diseases, and the classical experimental models fail in faithfully reproducing the pathological mechanisms behind them. In this regard, the use of three-dimensional (3D) culture systems, which more closely reproduce the native in vivo environment, can be a promising approach. Hydrogel-based systems are among the most used materials to reproduce the extracellular matrix, featuring an intrinsic similarity with its physiological characteristics. In this study, we developed a thermosensitive chitosan-based hydrogel combined with β-glycerophosphate (βGP) and sodium hydrogen carbonate (SHC), which give the system optimal mechanical properties and injectability, inducing the hydrogel sol-gel transition at 37 °C. An ad hoc protocol for the preparation of the hydrogel was established in order to obtain a highly homogeneous system, leading to reproducible physicochemical characteristics and easy cell encapsulation. All formulations supported the viability of a neuroblastoma/spinal cord hybrid cell line (NSC-34) beyond two weeks of culture and enabled cell differentiation towards a motor neuron-like morphology, characterized by the presence of extended neurites. Based on our results, these hydrogels represent excellent candidates for establishing 3D in vitro models of motor neuron diseases.
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Affiliation(s)
- Antonella Stanzione
- Dipartimento di Matematica e Fisica E. De Giorgi, University of Salento, 73100 Lecce, LE, Italy.,CNR-Nanotec, Institute of Nanotechnology, 73100 Lecce, Italy.
| | | | - Velia La Pesa
- IRCCS San Raffaele Scientific Institute, Neuropathology Unit, Institute of Experimental Neurology and Division of Neuroscience, 20132 Milan, Italy.
| | - Angelo Quattrini
- IRCCS San Raffaele Scientific Institute, Neuropathology Unit, Institute of Experimental Neurology and Division of Neuroscience, 20132 Milan, Italy.
| | - Alessandro Romano
- IRCCS San Raffaele Scientific Institute, Neuropathology Unit, Institute of Experimental Neurology and Division of Neuroscience, 20132 Milan, Italy.
| | - Giuseppe Gigli
- Dipartimento di Matematica e Fisica E. De Giorgi, University of Salento, 73100 Lecce, LE, Italy.,CNR-Nanotec, Institute of Nanotechnology, 73100 Lecce, Italy.
| | - Lorenzo Moroni
- CNR-Nanotec, Institute of Nanotechnology, 73100 Lecce, Italy. .,Complex Tissue Regeneration department, MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, 6229 ER Maastricht, The Netherlands
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8
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Morello G, Polini A, Scalera F, Rizzo R, Gigli G, Gervaso F. Preparation and Characterization of Salt-Mediated Injectable Thermosensitive Chitosan/Pectin Hydrogels for Cell Embedding and Culturing. Polymers (Basel) 2021; 13:2674. [PMID: 34451215 PMCID: PMC8398595 DOI: 10.3390/polym13162674] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [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: 07/21/2021] [Revised: 08/06/2021] [Accepted: 08/08/2021] [Indexed: 12/17/2022] Open
Abstract
In recent years, growing attention has been directed to the development of 3D in vitro tissue models for the study of the physiopathological mechanisms behind organ functioning and diseases. Hydrogels, acting as 3D supporting architectures, allow cells to organize spatially more closely to what they physiologically experience in vivo. In this scenario, natural polymer hybrid hydrogels display marked biocompatibility and versatility, representing valid biomaterials for 3D in vitro studies. Here, thermosensitive injectable hydrogels constituted by chitosan and pectin were designed. We exploited the feature of chitosan to thermally undergo sol-gel transition upon the addition of salts, forming a compound that incorporates pectin into a semi-interpenetrating polymer network (semi-IPN). Three salt solutions were tested, namely, beta-glycerophosphate (βGP), phosphate buffer (PB) and sodium hydrogen carbonate (SHC). The hydrogel formulations (i) were injectable at room temperature, (ii) gelled at 37 °C and (iii) presented a physiological pH, suitable for cell encapsulation. Hydrogels were stable in culture conditions, were able to retain a high water amount and displayed an open and highly interconnected porosity and suitable mechanical properties, with Young's modulus values in the range of soft biological tissues. The developed chitosan/pectin system can be successfully used as a 3D in vitro platform for studying tissue physiopathology.
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Affiliation(s)
- Giulia Morello
- Dipartimento di Matematica e Fisica E. De Giorgi, University of Salento, Campus Ecotekne, via Monteroni, 73100 Lecce, Italy; (G.M.); (G.G.)
- CNR NANOTEC—Institute of Nanotechnology c/o Campus Ecotekne, via Monteroni, 73100 Lecce, Italy; (F.S.); (R.R.)
| | - Alessandro Polini
- CNR NANOTEC—Institute of Nanotechnology c/o Campus Ecotekne, via Monteroni, 73100 Lecce, Italy; (F.S.); (R.R.)
| | - Francesca Scalera
- CNR NANOTEC—Institute of Nanotechnology c/o Campus Ecotekne, via Monteroni, 73100 Lecce, Italy; (F.S.); (R.R.)
| | - Riccardo Rizzo
- CNR NANOTEC—Institute of Nanotechnology c/o Campus Ecotekne, via Monteroni, 73100 Lecce, Italy; (F.S.); (R.R.)
| | - Giuseppe Gigli
- Dipartimento di Matematica e Fisica E. De Giorgi, University of Salento, Campus Ecotekne, via Monteroni, 73100 Lecce, Italy; (G.M.); (G.G.)
- CNR NANOTEC—Institute of Nanotechnology c/o Campus Ecotekne, via Monteroni, 73100 Lecce, Italy; (F.S.); (R.R.)
| | - Francesca Gervaso
- CNR NANOTEC—Institute of Nanotechnology c/o Campus Ecotekne, via Monteroni, 73100 Lecce, Italy; (F.S.); (R.R.)
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9
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De Vitis E, La Pesa V, Gervaso F, Romano A, Quattrini A, Gigli G, Moroni L, Polini A. A microfabricated multi-compartment device for neuron and Schwann cell differentiation. Sci Rep 2021; 11:7019. [PMID: 33782434 PMCID: PMC8007719 DOI: 10.1038/s41598-021-86300-4] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Accepted: 03/12/2021] [Indexed: 11/09/2022] Open
Abstract
Understanding the complex communication between different cell populations and their interaction with the microenvironment in the central and peripheral nervous systems is fundamental in neuroscience research. The development of appropriate in vitro approaches and tools, able to selectively analyze and/or probe specific cells and cell portions (e.g., axons and cell bodies in neurons), driving their differentiation into specific cell phenotypes, has become therefore crucial in this direction. Here we report a multi-compartment microfluidic device where up to three different cell populations can be cultured in a fluidically independent circuit. The device allows cell migration across the compartments and their differentiation. We showed that an accurate choice of the device geometrical features and cell culture parameters allows to (1) maximize cell adhesion and proliferation of neuron-like human cells (SH-SY5Y cells), (2) control the inter-compartment cell migration of neuron and Schwann cells, (3) perform long-term cell culture studies in which both SH-SY5Y cells and primary rat Schwann cells can be differentiated towards specific phenotypes. These results can lead to a plethora of in vitro co-culture studies in the neuroscience research field, where tuning and investigating cell-cell and cell-microenvironment interactions are essential.
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Affiliation(s)
- Eleonora De Vitis
- CNR NANOTEC - Institute of Nanotechnology, Campus Ecotekne, via Monteroni, 73100, Lecce, Italy
- Dipartimento di Matematica e Fisica E. de Giorgi, Università Del Salento, Campus Ecotekne, via Monteroni, 73100, Lecce, Italy
| | - Velia La Pesa
- Division of Neuroscience, Institute of Experimental Neurology, IRCCS San Raffaele Scientific Institute, 20132, Milan, Italy
| | - Francesca Gervaso
- CNR NANOTEC - Institute of Nanotechnology, Campus Ecotekne, via Monteroni, 73100, Lecce, Italy.
| | - Alessandro Romano
- Division of Neuroscience, Institute of Experimental Neurology, IRCCS San Raffaele Scientific Institute, 20132, Milan, Italy
| | - Angelo Quattrini
- Division of Neuroscience, Institute of Experimental Neurology, IRCCS San Raffaele Scientific Institute, 20132, Milan, Italy
| | - Giuseppe Gigli
- CNR NANOTEC - Institute of Nanotechnology, Campus Ecotekne, via Monteroni, 73100, Lecce, Italy
- Dipartimento di Matematica e Fisica E. de Giorgi, Università Del Salento, Campus Ecotekne, via Monteroni, 73100, Lecce, Italy
| | - Lorenzo Moroni
- CNR NANOTEC - Institute of Nanotechnology, Campus Ecotekne, via Monteroni, 73100, Lecce, Italy
- Complex Tissue Regeneration, Maastricht University, Universiteitssingel 40, Maastricht, 6229 ER, The Netherlands
| | - Alessandro Polini
- CNR NANOTEC - Institute of Nanotechnology, Campus Ecotekne, via Monteroni, 73100, Lecce, Italy.
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10
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Barbanente A, Palazzo B, Esposti LD, Adamiano A, Iafisco M, Ditaranto N, Migoni D, Gervaso F, Nadar R, Ivanchenko P, Leeuwenburgh S, Margiotta N. Selenium-doped hydroxyapatite nanoparticles for potential application in bone tumor therapy. J Inorg Biochem 2020; 215:111334. [PMID: 33341588 DOI: 10.1016/j.jinorgbio.2020.111334] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 10/15/2020] [Accepted: 12/05/2020] [Indexed: 01/04/2023]
Abstract
In the present study we have studied the incorporation and release of selenite ions (SeO32-) in hydroxyapatite nanoparticles for the treatment of bone tumors. Two types of selenium-doped hydroxyapatite (HASe) nanoparticles (NPs) with a nominal Se/(P + Se) molar ratio ranging from 0.01 up to 0.40 have been synthesized by a new and mild wet method. The two series of samples were thoroughly characterized and resulted to be slightly different in chemical composition, but they had similar properties in terms of morphology and degree of crystallinity. Selenium release from HASe was investigated under neutral and acidic conditions to simulate both healthy tissues and the low-pH environment surrounding a tumor mass, respectively. The comparison of the release profiles at two pH values clearly showed the possibility of modulating the Se release by simply changing the amount of Se in the HASe particles. The correlation between the physicochemical properties of HASe and their dissolution as a function of pH has been also investigated to facilitate future application of the NPs as chemotherapeutic adjuvant agents. Finally, the cytotoxic activity of HASe was evaluated using prostate (PC3) and breast (MDA-MB-231) cancer cells as well as healthy human bone marrow stem cells (hBMSc). HASe NPs exerted a good cytocompatibility at low concentration of Se but, with high Se doping concentration, they displayed strong cytotoxicity.
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Affiliation(s)
- Alessandra Barbanente
- Dipartimento di Chimica, Università degli Studi di Bari Aldo Moro, Via E. Orabona 4, 70125 Bari, Italy
| | - Barbara Palazzo
- Ghimas S.p.A., c/o Distretto Tecnologico High Tech Scarl, Campus Ecotekne, Via per Monteroni, 73100 Lecce, Italy
| | - Lorenzo Degli Esposti
- Institute of Science and Technology for Ceramics (ISTEC), National Research Council (CNR), Via Granarolo 64, 48018 Faenza, Italy
| | - Alessio Adamiano
- Institute of Science and Technology for Ceramics (ISTEC), National Research Council (CNR), Via Granarolo 64, 48018 Faenza, Italy
| | - Michele Iafisco
- Institute of Science and Technology for Ceramics (ISTEC), National Research Council (CNR), Via Granarolo 64, 48018 Faenza, Italy
| | - Nicoletta Ditaranto
- Dipartimento di Chimica, Università degli Studi di Bari Aldo Moro, Via E. Orabona 4, 70125 Bari, Italy
| | - Danilo Migoni
- Department of Biological and Environmental Sciences and Technologies (DiSTeBA), University of Salento, Prov.le Lecce-Monteroni, Centro Ecotekne, 73100 Lecce, Italy
| | - Francesca Gervaso
- Department of Engineering for Innovation, University of Salento, Prov.le Lecce-Monteroni, Centro Ecotekne, 73100 Lecce, Italy
| | - Robin Nadar
- Department of Dentistry - Regenerative Biomaterials, Radboud Institute for Molecular Life Sciences, Radboud university medical center, Philips van Leydenlaan 25, 6525, EX, Nijmegen, the Netherlands
| | - Pavlo Ivanchenko
- Dipartimento di Chimica, Università degli Studi di Torino, Via P. Giuria 7, 10125 Torino, Italy
| | - Sander Leeuwenburgh
- Institute of Science and Technology for Ceramics (ISTEC), National Research Council (CNR), Via Granarolo 64, 48018 Faenza, Italy; Department of Dentistry - Regenerative Biomaterials, Radboud Institute for Molecular Life Sciences, Radboud university medical center, Philips van Leydenlaan 25, 6525, EX, Nijmegen, the Netherlands
| | - Nicola Margiotta
- Dipartimento di Chimica, Università degli Studi di Bari Aldo Moro, Via E. Orabona 4, 70125 Bari, Italy.
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Scialla S, Palazzo B, Sannino A, Verri T, Gervaso F, Barca A. Evidence of Modular Responsiveness of Osteoblast-Like Cells Exposed to Hydroxyapatite-Containing Magnetic Nanostructures. Biology (Basel) 2020; 9:biology9110357. [PMID: 33113830 PMCID: PMC7692879 DOI: 10.3390/biology9110357] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 10/19/2020] [Accepted: 10/23/2020] [Indexed: 11/24/2022]
Abstract
Simple Summary Current research on nanocomposite materials with tailored physical–chemical properties is increasingly advancing in biomedical applications for bone regeneration. In this study, occurrence of differential responsiveness to dextran-grafted iron oxide (DM) nanoparticles and to their hybrid nano-hydroxyapatite (DM/n-HA) counterpart was investigated in human-derived, osteoblast-like cells. Sensitivity of cells in the presence of DMs or DM/n-HAs was evaluated in terms of cytoskeletal dynamics. Remarkably, it was shown that effects triggered by the DM are no more retained when DM is embedded onto DM/n-HA nanocomposites. In parallel, analyses on the expression of genes involved in (a) intracellular signaling pathways triggered by ligands or cell interactions with elements of the extracellular matrix, (b) modulation of processes such as cell cycle arrest, apoptosis, senescence, DNA repair, metabolism changes, and (c) iron homeostasis and absorption through cell membranes, indicated that the DM/n-HA-treated cells retain tracts of physiological responsiveness unlike DM-treated cells. Overall, a shielding effect by the n-HA was assumed (masking the DM’s cytotoxicity), and a modular biomimicry of the DM/n-HA nanocomposites. On these bases, the biocompatibility of n-HA associated to DM’s magnetic responsiveness offer a combination of structural/functional features of these nano-tools for bone tissue engineering, for finely acting within physiological ranges. Abstract The development of nanocomposites with tailored physical–chemical properties, such as nanoparticles containing magnetic iron oxides for manipulating cellular events at distance, implies exciting prospects in biomedical applications for bone tissue regeneration. In this context, this study aims to emphasize the occurrence of differential responsiveness in osteoblast-like cells to different nanocomposites with diverse features: dextran-grafted iron oxide (DM) nanoparticles and their hybrid nano-hydroxyapatite (DM/n-HA) counterpart. Here, responsiveness of cells in the presence of DMs or DM/n-HAs was evaluated in terms of cytoskeletal features. We observed that effects triggered by the DM are no more retained when DM is embedded onto the DM/n-HA nanocomposites. Also, analysis of mRNA level variations of the focal adhesion kinase (FAK), P53 and SLC11A2/DMT1 human genes showed that the DM/n-HA-treated cells retain tracts of physiological responsiveness compared to the DM-treated cells. Overall, a shielding effect by the n-HA component can be assumed, masking the DM’s cytotoxic potential, also hinting a modular biomimicry of the nanocomposites respect to the physiological responses of osteoblast-like cells. In this view, the biocompatibility of n-HA together with the magnetic responsiveness of DMs represent an optimized combination of structural with functional features of the DM/n-HA nano-tools for bone tissue engineering, for finely acting within physiological ranges.
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Affiliation(s)
- Stefania Scialla
- Department of Engineering for Innovation, University of Salento, 73100 Lecce, Italy; (B.P.); (A.S.); (F.G.)
- Institute of Polymers, Composites and Biomaterials—National Research Council, Viale J. F. Kennedy, 54 (Mostra d’Oltremare Pad.20), 80125 Naples, Italy
- Correspondence: (S.S.); (A.B.)
| | - Barbara Palazzo
- Department of Engineering for Innovation, University of Salento, 73100 Lecce, Italy; (B.P.); (A.S.); (F.G.)
- ENEA, Division for Sustainable Materials—Research Centre of Brindisi, 72100 Brindisi, Italy
| | - Alessandro Sannino
- Department of Engineering for Innovation, University of Salento, 73100 Lecce, Italy; (B.P.); (A.S.); (F.G.)
| | - Tiziano Verri
- Laboratory of Applied Physiology, Department of Biological and Environmental Sciences and Technologies (DiSTeBA), University of Salento, 73100 Lecce, Italy;
| | - Francesca Gervaso
- Department of Engineering for Innovation, University of Salento, 73100 Lecce, Italy; (B.P.); (A.S.); (F.G.)
- CNR Nanotec—Institute of Nanotechnology, 73100 Lecce, Italy
| | - Amilcare Barca
- Laboratory of Applied Physiology, Department of Biological and Environmental Sciences and Technologies (DiSTeBA), University of Salento, 73100 Lecce, Italy;
- Correspondence: (S.S.); (A.B.)
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Scalera F, Palazzo B, Barca A, Gervaso F. Sintering of magnesium‐strontium doped hydroxyapatite nanocrystals: Towards the production of 3D biomimetic bone scaffolds. J Biomed Mater Res A 2019; 108:633-644. [DOI: 10.1002/jbm.a.36843] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 11/11/2019] [Accepted: 11/15/2019] [Indexed: 11/08/2022]
Affiliation(s)
| | - Barbara Palazzo
- Ghimas S.p.A. Distretto Tecnologico High Tech Scarl Lecce Italy
- ENEA Photonics Micro and Nano‐Structures Laboratory Frascati Italy
| | - Amilcare Barca
- Department of Biological and Environmental Sciences and Technologies (DiSTeBA) University of Salento Lecce Italy
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Crovace AM, Giancamillo AD, Gervaso F, Mangiavini L, Zani D, Scalera F, Palazzo B, Izzo D, Agnoletto M, Domenicucci M, Sosio C, Sannino A, Giancamillo MD, Peretti GM. Evaluation of in Vivo Response of Three Biphasic Scaffolds for Osteochondral Tissue Regeneration in a Sheep Model. Vet Sci 2019; 6:vetsci6040090. [PMID: 31717551 PMCID: PMC6958333 DOI: 10.3390/vetsci6040090] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 09/19/2019] [Accepted: 10/23/2019] [Indexed: 01/26/2023] Open
Abstract
Osteochondral defects are a common problem in both human medicine and veterinary practice although with important limits concerning the cartilaginous tissue regeneration. Interest in the subchondral bone has grown, as it is now considered a key element in the osteochondral defect healing. The aim of this work was to generate and to evaluate the architecture of three cell-free scaffolds made of collagen, magnesium/hydroxyapatite and collagen hydroxyapatite/wollastonite to be implanted in a sheep animal model. Scaffolds were designed in a bilayer configuration and a novel “Honey” configuration, where columns of hydroxyapatite were inserted within the collagen matrix. The use of different types of scaffolds allowed us to identify the best scaffold in terms of integration and tissue regeneration. The animals included were divided into four groups: three were treated using different types of scaffold while one was left untreated and represented the control group. Evaluations were made at 3 months through CT analysis. The novel “Honey” configuration of the scaffold with hydroxyapatite seems to allow for a better reparative process, although we are still far from obtaining a complete restoration of the defect at this time point of follow-up.
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Affiliation(s)
- Alberto M. Crovace
- Department of Emergency and Organ Transplantation, University of Bari Aldo Moro, 70010 Bari, Italy
- Correspondence: ; Tel.: +39-3208239830
| | - Alessia Di Giancamillo
- Department of Veterinary Medicine, University of Milan, 20122 Milano, Italy; (A.D.G.); (D.Z.); (M.D.G.)
| | - Francesca Gervaso
- Department of Engineering for Innovation, University of Salento, 73100 Lecce, Italy; (F.G.); (F.S.); (B.P.); (D.I.); (A.S.)
- CNR NANOTEC, Institute of Nanotechnology c/o Campus Ecotekne, via Monteroni, 73100 Lecce, Italy
| | - Laura Mangiavini
- IRCCS Istituto Ortopedico Galeazzi, Via R. Galeazzi 4, Milan, 20122 Milano, Italy; (L.M.); (M.A.); (C.S.); (G.M.P.)
- Department of Biomedical Sciences for Health, University of Milan, 20122 Milan, Italy
| | - Davide Zani
- Department of Veterinary Medicine, University of Milan, 20122 Milano, Italy; (A.D.G.); (D.Z.); (M.D.G.)
| | - Francesca Scalera
- Department of Engineering for Innovation, University of Salento, 73100 Lecce, Italy; (F.G.); (F.S.); (B.P.); (D.I.); (A.S.)
- CNR NANOTEC, Institute of Nanotechnology c/o Campus Ecotekne, via Monteroni, 73100 Lecce, Italy
| | - Barbara Palazzo
- Department of Engineering for Innovation, University of Salento, 73100 Lecce, Italy; (F.G.); (F.S.); (B.P.); (D.I.); (A.S.)
| | - Daniela Izzo
- Department of Engineering for Innovation, University of Salento, 73100 Lecce, Italy; (F.G.); (F.S.); (B.P.); (D.I.); (A.S.)
| | - Marco Agnoletto
- IRCCS Istituto Ortopedico Galeazzi, Via R. Galeazzi 4, Milan, 20122 Milano, Italy; (L.M.); (M.A.); (C.S.); (G.M.P.)
| | - Marco Domenicucci
- Residency Program in Orthopaedics and Traumatology, University of Milan, 20122 Milan, Italy;
| | - Corrado Sosio
- IRCCS Istituto Ortopedico Galeazzi, Via R. Galeazzi 4, Milan, 20122 Milano, Italy; (L.M.); (M.A.); (C.S.); (G.M.P.)
| | - Alessandro Sannino
- Department of Engineering for Innovation, University of Salento, 73100 Lecce, Italy; (F.G.); (F.S.); (B.P.); (D.I.); (A.S.)
| | - Mauro Di Giancamillo
- Department of Veterinary Medicine, University of Milan, 20122 Milano, Italy; (A.D.G.); (D.Z.); (M.D.G.)
| | - Giuseppe M. Peretti
- IRCCS Istituto Ortopedico Galeazzi, Via R. Galeazzi 4, Milan, 20122 Milano, Italy; (L.M.); (M.A.); (C.S.); (G.M.P.)
- Department of Biomedical Sciences for Health, University of Milan, 20122 Milan, Italy
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Scialla S, Barca A, Palazzo B, D'Amora U, Russo T, Gloria A, De Santis R, Verri T, Sannino A, Ambrosio L, Gervaso F. Bioactive chitosan‐based scaffolds with improved properties induced by dextran‐grafted nano‐maghemite and
l
‐arginine amino acid. J Biomed Mater Res A 2019; 107:1244-1252. [DOI: 10.1002/jbm.a.36633] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Revised: 12/14/2018] [Accepted: 12/26/2018] [Indexed: 01/13/2023]
Affiliation(s)
- Stefania Scialla
- Department of Engineering for InnovationUniversity of Salento Lecce Italy
| | - Amilcare Barca
- General Physiology Laboratories, Department of Biological and Environmental Sciences and TechnologiesUniversity of Salento Lecce Italy
| | - Barbara Palazzo
- Department of Engineering for InnovationUniversity of Salento Lecce Italy
- Ghimas S.p.A., c/o Dhitech Scarl, Campus Ecotekne Lecce Italy
| | - Ugo D'Amora
- Institute of Polymers, Composites and BiomaterialsNational Research Council Naples Italy
| | - Teresa Russo
- Institute of Polymers, Composites and BiomaterialsNational Research Council Naples Italy
| | - Antonio Gloria
- Institute of Polymers, Composites and BiomaterialsNational Research Council Naples Italy
| | - Roberto De Santis
- Institute of Polymers, Composites and BiomaterialsNational Research Council Naples Italy
| | - Tiziano Verri
- General Physiology Laboratories, Department of Biological and Environmental Sciences and TechnologiesUniversity of Salento Lecce Italy
| | - Alessandro Sannino
- Department of Engineering for InnovationUniversity of Salento Lecce Italy
| | - Luigi Ambrosio
- Institute of Polymers, Composites and BiomaterialsNational Research Council Naples Italy
| | - Francesca Gervaso
- Department of Engineering for InnovationUniversity of Salento Lecce Italy
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Nitti P, Gallo N, Natta L, Scalera F, Palazzo B, Sannino A, Gervaso F. Influence of Nanofiber Orientation on Morphological and Mechanical Properties of Electrospun Chitosan Mats. J Healthc Eng 2018; 2018:3651480. [PMID: 30538809 PMCID: PMC6260544 DOI: 10.1155/2018/3651480] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Revised: 10/05/2018] [Accepted: 10/24/2018] [Indexed: 12/22/2022]
Abstract
This work explored the use of chitosan (Cs) and poly(ethylene oxide) (PEO) blends for the fabrication of electrospun fiber-orientated meshes potentially suitable for engineering fiber-reinforced soft tissues such as tendons, ligaments, or meniscus. To mimic the fiber alignment present in native tissue, the CS/PEO blend solution was electrospun using a traditional static plate, a rotating drum collector, and a rotating disk collector to get, respectively, random, parallel, circumferential-oriented fibers. The effects of the different orientations (parallel or circumferential) and high-speed rotating collector influenced fiber morphology, leading to a reduction in nanofiber diameters and an improvement in mechanical properties.
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Affiliation(s)
- Paola Nitti
- Department of Engineering for Innovation, University of Salento, Lecce 73100, Italy
| | - Nunzia Gallo
- Department of Engineering for Innovation, University of Salento, Lecce 73100, Italy
| | - Lara Natta
- Department of Engineering for Innovation, University of Salento, Lecce 73100, Italy
| | - Francesca Scalera
- Department of Engineering for Innovation, University of Salento, Lecce 73100, Italy
| | - Barbara Palazzo
- Department of Engineering for Innovation, University of Salento, Lecce 73100, Italy
- Ghimas S.p.A. c/o Dhitech Scarl, Lecce 73100, Italy
| | - Alessandro Sannino
- Department of Engineering for Innovation, University of Salento, Lecce 73100, Italy
| | - Francesca Gervaso
- Department of Engineering for Innovation, University of Salento, Lecce 73100, Italy
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Izzo D, Palazzo B, Scalera F, Gullotta F, lapesa V, Scialla S, Sannino A, Gervaso F. Chitosan scaffolds for cartilage regeneration: influence of different ionic crosslinkers on biomaterial properties. INT J POLYM MATER PO 2018. [DOI: 10.1080/00914037.2018.1525538] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
| | - Barbara Palazzo
- Department of Engineering for Innovation, University of Salento, Lecce, Italy
- Ghimas S.p.A., c/o Dhitech S.c.a.r.l., Lecce, Italy
| | - Francesca Scalera
- Department of Engineering for Innovation, University of Salento, Lecce, Italy
| | - Fabiana Gullotta
- Department of Biomedicine, University Hospital of Basel, Basel, Switzerland
| | - Velia lapesa
- Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Neuropathology Unit, Institute of Experimental Neurology, Milan, Italy
| | - Stefania Scialla
- Department of Engineering for Innovation, University of Salento, Lecce, Italy
| | - Alessandro Sannino
- Department of Engineering for Innovation, University of Salento, Lecce, Italy
| | - Francesca Gervaso
- Department of Engineering for Innovation, University of Salento, Lecce, Italy
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Gullotta F, Izzo D, Scalera F, Palazzo B, Martin I, Sannino A, Gervaso F. Biomechanical evaluation of hMSCs-based engineered cartilage for chondral tissue regeneration. J Mech Behav Biomed Mater 2018; 86:294-304. [DOI: 10.1016/j.jmbbm.2018.06.040] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Revised: 06/18/2018] [Accepted: 06/25/2018] [Indexed: 01/22/2023]
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Raimondi MT, Laganà M, Conci C, Crestani M, Di Giancamillo A, Gervaso F, Deponti D, Boschetti F, Nava MM, Scandone C, Domeneghini C, Sannino A, Peretti GM. Development and biological validation of a cyclic stretch culture system for the ex vivo engineering of tendons. Int J Artif Organs 2018; 41:400-412. [PMID: 29781355 DOI: 10.1177/0391398818774496] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
INTRODUCTION An innovative approach to the treatment of tendon injury or degeneration is given by engineered grafts, made available through the development of bioreactors that generate tendon tissue in vitro, by replicating in vivo conditions. This work aims at the design of a bioreactor capable of applying a stimulation of cyclic strain on cell constructs to promote the production of bioartificial tissue with mechanical and biochemical properties resembling those of the native tissue. METHODS The system was actuated by an electromagnet and design specifications were imposed as follows. The stimulation protocol provides to scaffolds a 3% preload, a 10% deformation, and a stimulation frequency rate set at 0.5, 1, and 2 Hz, which alternates stimulation/resting phases. Porcine tenocytes were seeded on collagen scaffolds and cultured in static or dynamic conditions for 7 and 14 days. RESULTS The culture medium temperature did not exceed 37°C during prolonged culture experiments. The applied force oscillates between 1.5 and 4.5 N. The cyclic stimulation of the engineered constructs let both the cells and the scaffold fibers align along the strain direction in response to the mechanical stimulus. CONCLUSION We designed a pulsatile strain bioreactor for tendon tissue engineering. The in vitro characterization shows a preferential cell alignment at short time points. Prolonged culture time, however, seems to influence negatively on the survival of the cells indicating the need of further optimization concerning the culture conditions and the mechanical stimulation.
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Affiliation(s)
- Manuela Teresa Raimondi
- 1 Department of Chemistry, Materials and Chemical Engineering "Giulio Natta," Politecnico di Milano, Milan, Italy
| | - Matteo Laganà
- 1 Department of Chemistry, Materials and Chemical Engineering "Giulio Natta," Politecnico di Milano, Milan, Italy.,2 Gemma Prototipi, Longone al Segrino, Italy
| | - Claudio Conci
- 1 Department of Chemistry, Materials and Chemical Engineering "Giulio Natta," Politecnico di Milano, Milan, Italy
| | - Michele Crestani
- 1 Department of Chemistry, Materials and Chemical Engineering "Giulio Natta," Politecnico di Milano, Milan, Italy
| | - Alessia Di Giancamillo
- 3 Department of Health, Animal Science and Food Safety, Università degli Studi di Milano, Milan, Italy
| | - Francesca Gervaso
- 4 Department of Engineering for Innovation, University of Salento, Lecce, Italy
| | | | - Federica Boschetti
- 1 Department of Chemistry, Materials and Chemical Engineering "Giulio Natta," Politecnico di Milano, Milan, Italy
| | - Michele M Nava
- 1 Department of Chemistry, Materials and Chemical Engineering "Giulio Natta," Politecnico di Milano, Milan, Italy
| | | | - Cinzia Domeneghini
- 3 Department of Health, Animal Science and Food Safety, Università degli Studi di Milano, Milan, Italy
| | - Alessandro Sannino
- 4 Department of Engineering for Innovation, University of Salento, Lecce, Italy
| | - Giuseppe M Peretti
- 6 IRCCS Istituto Ortopedico Galeazzi, Milan, Italy.,7 Department of Biomedical Sciences for Health, University of Milan, Milan, Italy
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Esposito Corcione C, Gervaso F, Scalera F, Montagna F, Maiullaro T, Sannino A, Maffezzoli A. 3D printing of hydroxyapatite polymer-based composites for bone tissue engineering. Journal of Polymer Engineering 2017. [DOI: 10.1515/polyeng-2016-0194] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Skeletal defects reconstruction, using custom-made substitutes, represents a valid solution to replacing lost and damaged anatomical bone structures, renew their original function, and at the same time, restore the original aesthetic aspect. Rapid prototyping (RP) techniques allow the construction of complex physical models based on 3D clinical images. However, RP machines usually work with synthetic polymers; therefore, producing custom-made scaffolds using a biocompatible material directly by RP is an exciting challenge. The aim of the present work is to investigate the potentiality of 3D printing as a manufacturing method to produce an osteogenic hydroxyapatite-polylactic acid bone graft substitute.
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20
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Di Giancamillo A, Deponti D, Gervaso F, Salvatore L, Scalera F, Mangiavini L, Scurati R, Sannino A, Peretti GM. The analysis of different scaffolds and the benefit of fibrin glue for tendon tissue engineering at different culture times. J BIOL REG HOMEOS AG 2017; 31:67-73. [PMID: 29185298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
This study evaluated a tendon substitute model. Tenocytes were isolated from pig Achilles tendon, seeded onto scaffolds (Opocrin 2%, Typeone 3% and Symatese 2%) and studied by histology, immunofluorescence for collagen type 1 and 3 and biochemical analysis to assess cellularity. The permeability of these compounds was evaluated in the presence or absence of fibrin glue. Opocrin 2% was the best choice for cellular distribution within the scaffolds, which were then cultured for T0, T4, T7 and T10 days. Fibrin glue has been strongly supportive for the survival of cells with a significant increase in DNA content at T10 (P<0.05). Moreover, the synthetic activity of fibrin-free scaffolds was always negative. Lastly, a progressive increase in collagen 1 and 3 with fibrin-glue was observed. However, static culture is not sufficient to support long-term cellular activities and at T10 there is still a lack of organized matrix similar to the native tissue.
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Affiliation(s)
- A Di Giancamillo
- Department of Health, Animal Science and Food Safety, University of Milan, Italy
| | - D Deponti
- IRCCS, Ospedale San Raffaele, Milan, Italy
| | - F Gervaso
- Department of Engineering for Innovation, University of Salento, Italy
| | - L Salvatore
- Department of Engineering for Innovation, University of Salento, Italy
| | - F Scalera
- Department of Engineering for Innovation, University of Salento, Italy
| | - L Mangiavini
- IRCCS Istituto Ortopedico Galeazzi, Milan, Italy
| | - R Scurati
- Department of Biomedical Sciences for Health, University of Milan, Italy
| | - A Sannino
- Department of Engineering for Innovation, University of Salento, Italy
| | - G M Peretti
- IRCCS Istituto Ortopedico Galeazzi, Milan, Italy
- Department of Biomedical Sciences for Health, University of Milan, Italy
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Di Giancamillo A, Deponti D, Raimondi MT, Boschetti F, Gervaso F, Modina S, Mangiavini L, Peretti GM. Comparison between different cell sources and culture strategies for tendon tissue engineering. J BIOL REG HOMEOS AG 2017; 31:61-66. [PMID: 29185297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The aim of this study was to evaluate the effect of an in vitro mechanical stimulation by the use of a bioreactor on an engineered tendon for 7 and 14 days and to analyze the effect of the use of different cell sources: tenocytes, dermal fibroblasts or Adipose-Derived Stem Cells (ASCs), isolated from pig tissues. Histology showed a re-organization of the neo-tissue derived from the three cell populations along the direction of the stimulus. At T7, cells morphology was preserved while an increased cellular suffering at T14 was observed for all cell populations. Tenocytes exhibited higher survival than other cells. A stable immunopositivity for collagen type 1 or 3 at both time points was also observed. In conclusion, dermal fibroblasts and ASCs represent an interesting alternative and in vitro culture with mechanical stimuli may enhance the maturation of a tendon-like tissue.
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Affiliation(s)
- A Di Giancamillo
- Department of Health, Animal Science and Food Safety, University of Milan, Italy
| | - D Deponti
- IRCCS, Ospedale San Raffaele, Milan, Italy
| | - M T Raimondi
- Department of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano, Milan, Italy
| | - F Boschetti
- Department of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano, Milan, Italy
- IRCCS Istituto Ortopedico Galeazzi, Milan, Italy
| | - F Gervaso
- Department of Engineering for Innovation, University of Salento, Italy
| | - S Modina
- Department of Health, Animal Science and Food Safety, University of Milan, Italy
| | - L Mangiavini
- IRCCS Istituto Ortopedico Galeazzi, Milan, Italy
| | - G M Peretti
- IRCCS Istituto Ortopedico Galeazzi, Milan, Italy
- Department of Biomedical Sciences for Health, University of Milan, Italy
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Abstract
This paper focuses on tissue engineering (TE) from the biomaterialist’s point of view. With the aim of answering some simple but key questions about TE, the related literature is here reviewed. In order to obtain an engineered tissue the following steps are mandatory: (a) cell selection, (b) identification of the ideal three-dimensional scaffold for cell seeding and proliferation, (c) choice of the most suitable type of cell culture. Whereas the biotechnologist working in the TE field is responsible for optimizing the cell seeding and culture, the biomaterialist has the challenging task of optimizing the three-dimensional cell support, or scaffold. Therefore, in the present paper, scaffold properties, biomaterials and fabrication technologies are analyzed in depth and reviewed on the basis of the current literature. Finally, mention is also made of the most recently emerging and innovative technologies relating to scaffolds for TE applications.
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Affiliation(s)
- Francesca Gervaso
- Department of Engineering for Innovation, University of Salento, Lecce, Italy
| | - Alessandro Sannino
- Department of Engineering for Innovation, University of Salento, Lecce, Italy
| | - Giuseppe Peretti
- IRCCS Galeazzi Orthopaedics Institute, Milan, Italy
- Department of Biomedical Sciences for Health, University of Milan, Italy
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Scialla S, Palazzo B, Barca A, Carbone L, Fiore A, Monteduro AG, Maruccio G, Sannino A, Gervaso F. Simplified preparation and characterization of magnetic hydroxyapatite-based nanocomposites. Mater Sci Eng C Mater Biol Appl 2017; 76:1166-1174. [PMID: 28482482 DOI: 10.1016/j.msec.2017.03.060] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Revised: 12/22/2016] [Accepted: 03/09/2017] [Indexed: 02/03/2023]
Abstract
Authors aimed to provide a magnetic responsiveness to bone-mimicking nano-hydroxyapatite (n-HA). For this purpose, dextran-grafted iron oxide nanoarchitectures (DM) were synthesized by a green-friendly and scalable alkaline co-precipitation method at room temperature and used to functionalize n-HA crystals. Different amounts of DM hybrid structures were added into the nanocomposites (DM/n-HA 1:1, 2:1 and 3:1weight ratio) which were investigated through extensive physicochemical (XRD, ICP, TGA and Zeta-potential), microstructural (TEM and DLS), magnetic (VSM) and biological analyses (MTT proliferation assay). X-ray diffraction patterns have confirmed the n-HA formation in the presence of DM as a co-reagent. Furthermore, the addition of DM during the synthesis does not affect the primary crystallite domains of DM/n-HA nanocomposites. DM/n-HAs have shown a rising of the magnetic moment values by increasing DM content up to 2:1 ratio. However, the magnetic moment value recorded in the DM/n-HA 3:1 do not further increase showing a saturation behaviour. The cytocompatibility of the DM/n-HA was evaluated with respect to the MG63 osteoblast-like cell line. Proliferation assays revealed that viability, carried out in the absence of external magnetic field, was not affected by the amount of DM employed. Interestingly, assays also suggested that the DM/n-HA nanocomposites exhibit a possible shielding effect with respect to the anti-proliferative activity induced by the DM particles alone.
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Affiliation(s)
- Stefania Scialla
- Department of Engineering for Innovation, University of Salento, Lecce, Italy.
| | - Barbara Palazzo
- Department of Engineering for Innovation, University of Salento, Lecce, Italy; Ghimas S.p.A., c/o Dhitech S.c.a.r.l., Campus Ecotekne, Lecce, Italy
| | - Amilcare Barca
- General Physiology Laboratory, DiSTeBA Department, University of Salento, Lecce, Italy
| | - Luigi Carbone
- CNR NANOTEC-Institute of Nanotechnology c/o Campus Ecotekne, University of Salento, Lecce, Italy
| | - Angela Fiore
- CNR NANOTEC-Institute of Nanotechnology c/o Campus Ecotekne, University of Salento, Lecce, Italy; Department of Mathematics and Physics, University of Salento, Via per Arnesano, 73100 Lecce, Italy
| | - Anna Grazia Monteduro
- National Institute of Gastroenterology "S. De Bellis" Research Hospital, via Turi 27, 70013 Castellana Grotte Bari, Italy
| | - Giuseppe Maruccio
- CNR NANOTEC-Institute of Nanotechnology c/o Campus Ecotekne, University of Salento, Lecce, Italy; Department of Mathematics and Physics, University of Salento, Via per Arnesano, 73100 Lecce, Italy
| | - Alessandro Sannino
- Department of Engineering for Innovation, University of Salento, Lecce, Italy
| | - Francesca Gervaso
- Department of Engineering for Innovation, University of Salento, Lecce, Italy
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Esposito Corcione C, Gervaso F, Scalera F, Montagna F, Sannino A, Maffezzoli A. The feasibility of printing polylactic acid-nanohydroxyapatite composites using a low-cost fused deposition modeling 3D printer. J Appl Polym Sci 2016. [DOI: 10.1002/app.44656] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Carola Esposito Corcione
- Department of Engineering for Innovation; University of Salento; Via Monteroni 73100 Lecce Italy
| | - Francesca Gervaso
- Department of Engineering for Innovation; University of Salento; Via Monteroni 73100 Lecce Italy
| | - Francesca Scalera
- Department of Engineering for Innovation; University of Salento; Via Monteroni 73100 Lecce Italy
| | - Francesco Montagna
- Department of Engineering for Innovation; University of Salento; Via Monteroni 73100 Lecce Italy
| | - Alessandro Sannino
- Department of Engineering for Innovation; University of Salento; Via Monteroni 73100 Lecce Italy
| | - Alfonso Maffezzoli
- Department of Engineering for Innovation; University of Salento; Via Monteroni 73100 Lecce Italy
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Gervaso F, Mangiavini L, Di Giancamillo A, Boschetti F, Izzo D, Zani DD, Di Giancamillo M, Tessaro I, Domenicucci M, Scalera F, Domeneghini C, Crovace AM, Sannino A, Peretti GM. Comparison of three novel biphasic scaffolds for one-stage treatment of osteochondral defects in a sheep model. J BIOL REG HOMEOS AG 2016; 30:24-31. [PMID: 28002897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In the last years, several tissue engineering techniques have been applied to develop different kinds of osteochondral substitutes to overcome the scarce reparative properties of this tissue. The aim of this study was to generate and compare three biphasic scaffolds in an osteochondral lesion in a large-animal model. A critical osteochondral defect was generated in the medial femoral condyle of 18 skeletally mature sheep. Three defects were left untreated, the remaining lesions were divided into three groups: 5 lesions were treated with a biphasic scaffold made of collagen type I and small cylinders of Magnesium Hydroxyapatite; 5 lesions were treated with a biphasic substituted formed by collagen type I and Wollastonite, 5 lesions were treated with a scaffold made of collagen type I and small cylinders of Wollastonite/Hydroxyapatite. Animals were sacrificed after 3 months and samples were analyzed by CT and MRI, macroscopic evaluation and histology. Our study demonstrated that one of these novel biphasic scaffolds possesses the potential for being applied for one-stage procedures for osteochondral defects.
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Affiliation(s)
- F Gervaso
- Department of Engineering for Innovation, University of Salento, Lecce, Italy
| | - L Mangiavini
- IRCCS Istituto Ortopedico Galeazzi, Milan, Italy
| | - A Di Giancamillo
- Department of Health, Animal Science and Food Safety, University of Milan, Milan, Italy
| | - F Boschetti
- Laboratory of Biological Structure Mechanics, Department of Structural Engineering, Politecnico di Milano, Milan, Italy
| | - D Izzo
- Department of Engineering for Innovation, University of Salento, Lecce, Italy
| | - D D Zani
- Department of Veterinary Medicine (DIMEVET), Ospedale Didattico Universitario Az. Polo Veterinario di Lodi, University of Milan, Milan, Italy
| | - M Di Giancamillo
- Department of Veterinary Medicine (DIMEVET), Ospedale Didattico Universitario Az. Polo Veterinario di Lodi, University of Milan, Milan, Italy
| | - I Tessaro
- IRCCS Istituto Ortopedico Galeazzi, Milan, Italy
| | - M Domenicucci
- Residency Program in Orthopaedics and Traumatology, University of Milan, Milan, Italy
| | - F Scalera
- Department of Engineering for Innovation, University of Salento, Lecce, Italy
| | - C Domeneghini
- Department of Health, Animal Science and Food Safety, University of Milan, Milan, Italy
| | - A M Crovace
- Dottorato di Ricerca in Sanità e Scienze Sperimentali Veterinarie –DMV, University of Perugia, Perugia, Italy
| | - A Sannino
- Department of Engineering for Innovation, University of Salento, Lecce, Italy
| | - G M Peretti
- IRCCS Istituto Ortopedico Galeazzi, Milan, Italy
- Department of Biomedical Sciences for Health, University of Milan, Milan, Italy
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26
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Del Mercato LL, Passione LG, Izzo D, Rinaldi R, Sannino A, Gervaso F. Design and characterization of microcapsules-integrated collagen matrixes as multifunctional three-dimensional scaffolds for soft tissue engineering. J Mech Behav Biomed Mater 2016; 62:209-221. [PMID: 27219851 DOI: 10.1016/j.jmbbm.2016.05.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Revised: 04/28/2016] [Accepted: 05/05/2016] [Indexed: 02/03/2023]
Abstract
Three-dimensional (3D) porous scaffolds based on collagen are promising candidates for soft tissue engineering applications. The addition of stimuli-responsive carriers (nano- and microparticles) in the current approaches to tissue reconstruction and repair brings about novel challenges in the design and conception of carrier-integrated polymer scaffolds. In this study, a facile method was developed to functionalize 3D collagen porous scaffolds with biodegradable multilayer microcapsules. The effects of the capsule charge as well as the influence of the functionalization methods on the binding efficiency to the scaffolds were studied. It was found that the binding of cationic microcapsules was higher than that of anionic ones, and application of vacuum during scaffolds functionalization significantly hindered the attachment of the microcapsules to the collagen matrix. The physical properties of microcapsules-integrated scaffolds were compared to pristine scaffolds. The modified scaffolds showed swelling ratios, weight losses and mechanical properties similar to those of unmodified scaffolds. Finally, in vitro diffusional tests proved that the collagen scaffolds could stably retain the microcapsules over long incubation time in Tris-HCl buffer at 37°C without undergoing morphological changes, thus confirming their suitability for tissue engineering applications. The obtained results indicate that by tuning the charge of the microcapsules and by varying the fabrication conditions, collagen scaffolds patterned with high or low number of microcapsules can be obtained, and that the microcapsules-integrated scaffolds fully retain their original physical properties.
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Affiliation(s)
- Loretta L Del Mercato
- Nanoscience Institute-CNR, Euromediterranean Center for Nanomaterial Modelling and Technology (ECMT), via Arnesano, 73100 Lecce, Italy; CNR NANOTEC - Institute of Nanotechnology c/o Campus Ecotekne, Via Monteroni, 73100 Lecce, Italy.
| | - Laura Gioia Passione
- Nanoscience Institute-CNR, Euromediterranean Center for Nanomaterial Modelling and Technology (ECMT), via Arnesano, 73100 Lecce, Italy; CNR NANOTEC - Institute of Nanotechnology c/o Campus Ecotekne, Via Monteroni, 73100 Lecce, Italy
| | - Daniela Izzo
- DHITECH s.c.a.r.l - High Technology Cluster c/o Campus Ecotekne, Via Monteroni s.n., 73100 Lecce, Italy
| | - Rosaria Rinaldi
- Nanoscience Institute-CNR, Euromediterranean Center for Nanomaterial Modelling and Technology (ECMT), via Arnesano, 73100 Lecce, Italy; Department of Mathematics and Physics "Ennio De Giorgi" University of Salento, via Arnesano, 73100 Lecce, Italy
| | - Alessandro Sannino
- Department of Engineering for Innovation, University of Salento, Via Monteroni s.n., 73100 Lecce, Italy
| | - Francesca Gervaso
- Department of Engineering for Innovation, University of Salento, Via Monteroni s.n., 73100 Lecce, Italy.
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27
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Dimida S, Demitri C, De Benedictis VM, Scalera F, Gervaso F, Sannino A. Genipin-cross-linked chitosan-based hydrogels: Reaction kinetics and structure-related characteristics. J Appl Polym Sci 2015. [DOI: 10.1002/app.42256] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Simona Dimida
- Department of Engineering for Innovation; University of Salento; Via Monteroni km 1 73100 Lecce Italy
| | - Christian Demitri
- Department of Engineering for Innovation; University of Salento; Via Monteroni km 1 73100 Lecce Italy
| | - Vincenzo M. De Benedictis
- Department of Engineering for Innovation; University of Salento; Via Monteroni km 1 73100 Lecce Italy
| | - Francesca Scalera
- Department of Engineering for Innovation; University of Salento; Via Monteroni km 1 73100 Lecce Italy
| | - Francesca Gervaso
- Department of Engineering for Innovation; University of Salento; Via Monteroni km 1 73100 Lecce Italy
| | - Alessandro Sannino
- Department of Engineering for Innovation; University of Salento; Via Monteroni km 1 73100 Lecce Italy
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28
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Padmanabhan SK, Salvatore L, Gervaso F, Catalano M, Taurino A, Sannino A, Licciulli A. Synthesis and Characterization of Collagen Scaffolds Reinforced by Eggshell Derived Hydroxyapatite for Tissue Engineering. J Nanosci Nanotechnol 2015; 15:504-509. [PMID: 26328390 DOI: 10.1166/jnn.2015.9489] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
In this work, we synthesized porous nanohydroxyapatite/collagen composite scaffold (nHA-COL), which resemble extracellular matrices in bone and cartilage tissues. Nano hydroxyapatite (nHA) was successfully nucleated in to the collagen matrix using hen eggshell as calcium biogenic source. Porosity was evaluated by apparent and theoretical density measurement. Porosity of all scaffolds was in the range of 95-98%. XRD and TEM analyses show the purity and size of nucleated HA around 10 nm and selected area electron diffraction (SAED) analysis reveals the polycrystalline nature of nucleated HA. SEM analysis reveals (i) all the scaffolds have interconnected pores with an average pore diameter of 130 micron and (ii) aggregates of hydroxyapatite were strongly embedded in the collagen matrix for both composite scaffolds compared with pure collagen scaffold. EDS analysis shows the Ca/P stoichiometric ratio around 1.67 and FTIR reveals the chemical interaction between the collagen molecule and HA particles. The testing of mechanical properties evidenced that incorporation of HA resulted in up to a two-fold increase in compressive modulus with high reinforcement level (-7 kPa for 50HA-50COL) compared to pure collagen scaffold.
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Sosio C, Di Giancamillo A, Deponti D, Gervaso F, Scalera F, Melato M, Campagnol M, Boschetti F, Nonis A, Domeneghini C, Sannino A, Peretti GM. Osteochondral repair by a novel interconnecting collagen-hydroxyapatite substitute: a large-animal study. Tissue Eng Part A 2014; 21:704-15. [PMID: 25316498 DOI: 10.1089/ten.tea.2014.0129] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
A novel three-dimensional bicomponent substitute made of collagen type I and hydroxyapatite was tested for the repair of osteochondral lesions in a swine model. This scaffold was assembled by a newly developed method that guarantees the strict integration between the organic and the inorganic parts, mimicking the biological tissue between the chondral and the osseous phase. Thirty-six osteochondral lesions were created in the trochlea of six pigs; in each pig, two lesions were treated with scaffolds seeded with autologous chondrocytes (cell+group), two lesions were treated with unseeded scaffolds (cell- group), and the two remaining lesions were left untreated (untreated group). After 3 months, the animals were sacrificed and the newly formed tissue was analyzed to evaluate the degree of maturation. The International Cartilage Repair Society (ICRS) macroscopic assessment showed significantly higher scores in the cell- and untreated groups when compared with the cell+ group. Histological evaluation showed the presence of repaired tissue, with fibroblast-like and hyaline-like areas in all groups; however, with respect to the other groups, the cell- group showed significantly higher values in the ICRS II histological scores for "cell morphology" and for the "surface/superficial assessment." While the scaffold seeded with autologous chondrocytes promoted the formation of a reparative tissue with high cellularity but low glycosaminoglycans (GAG) production, on the contrary, the reparative tissue observed with the unseeded scaffold presented lower cellularity but higher and uniform GAG distribution. Finally, in the lesions treated with scaffolds, the immunohistochemical analysis showed the presence of collagen type II in the peripheral part of the defect, indicating tissue maturation due to the migration of local cells from the surroundings. This study showed that the novel osteochondral scaffold was easy to handle for surgical implantation and was stable within the site of lesion; at the end of the experimental time, all implants were well integrated with the surrounding tissue and no signs of synovitis were observed. The quality of the reparative tissue seemed to be superior for the lesions treated with the unseeded scaffolds, indicating the promising potential of this novel biomaterial for use in a one-stage procedure for osteochondral repair.
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Gervaso F, Boschetti F, Pennati G. Evaluation of the Wharton׳s jelly poroelastic parameters through compressive tests on placental and foetal ends of human umbilical cords. J Mech Behav Biomed Mater 2014; 35:51-8. [DOI: 10.1016/j.jmbbm.2014.03.016] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2013] [Revised: 03/13/2014] [Accepted: 03/18/2014] [Indexed: 11/29/2022]
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Deponti D, Di Giancamillo A, Gervaso F, Domenicucci M, Domeneghini C, Sannino A, Peretti GM. Collagen scaffold for cartilage tissue engineering: the benefit of fibrin glue and the proper culture time in an infant cartilage model. Tissue Eng Part A 2013; 20:1113-26. [PMID: 24152291 DOI: 10.1089/ten.tea.2013.0171] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
This study (i) developed a scaffold made of collagen I designed for hosting the autologous chondrocytes, (ii) focused on the optimization of chondrocytes seeding by the addition of the fibrin glue, and (iii) investigated the culture time for the ideal scaffold maturation in vitro. In the first part of the study, fresh chondrocytes were isolated from infant swine articular cartilage, and immediately seeded onto the collagen sponges either in medium or in fibrinogen in order to show the contribute of fibrin glue in cell seeding and survival into the scaffold. In the second part of the study, chondrocytes were first expanded in vitro and then resuspended in fibrinogen, seeded in collagen sponges, and cultured for 1, 3, and 5 weeks in order to identify the optimal time for the rescue of cell phenotype and for the scaffold maturation into a tissue with chondral properties. The histological and immunohistochemical data from the first part of the study (study with primary chondrocytes) demonstrated that the presence of fibrin glue ameliorated cell distribution and survival into the chondral composites. The second part of this work (study with dedifferentiated chondrocytes) showed that the prolongation of the culture to 3 weeks promoted a significant restoration of the cell phenotype, resulting in a composite with proper morphological features, biochemical composition, and mechanical integrity. In conclusion, this study developed a collagenic-fibrin glue scaffold that was able to support chondrocyte survival and synthetic activity in a static culture; in particular, this model was able to turn the engineered samples into a tissue with chondral-like properties when cultured in vitro for at least 3 weeks.
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Pennati G, Laganà K, Gervaso F, Rigano S, Ferrazzi E. How Do Cord Compressions Affect the Umbilical Venous Flow Resistance? An In Vitro Investigation of the Biomechanical Mechanisms. Cardiovasc Eng Technol 2013; 4:267-275. [DOI: 10.1007/s13239-013-0131-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/2012] [Accepted: 02/05/2013] [Indexed: 11/30/2022]
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Tomei AA, Boschetti F, Gervaso F, Swartz MA. 3D collagen cultures under well-defined dynamic strain: a novel strain device with a porous elastomeric support. Biotechnol Bioeng 2009; 103:217-25. [PMID: 19148875 DOI: 10.1002/bit.22236] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The field of mechanobiology has grown tremendously in the past few decades, and it is now well accepted that dynamic stresses and strains can impact cell and tissue organization, cell-cell and cell-matrix communication, matrix remodeling, cell proliferation and apoptosis, cell migration, and many other cell behaviors in both physiological and pathophysiological situations. Natural reconstituted matrices like collagen and fibrin are often used for three-dimensional (3D) mechanobiology studies because they naturally form fibrous architectures and are rich in cell adhesion sites; however, they are physically weak and typically contain >99% water, making it difficult to apply dynamic stresses to them in a truly 3D context. Here we present a composite matrix and strain device that can support natural matrices within a macroporous elastic structure of polyurethane. We characterize this system both in terms of its mechanical behavior and its ability to support the growth and in vivo-like behaviors of primary human lung fibroblasts cultured in collagen. The porous polyurethane was created with highly interconnected pores in the hundreds of microm size scale, so that while it did not affect cell behavior in the collagen gel within the pores, it could control the overall elastic behavior of the entire tissue culture system. In this way, a well-defined dynamic strain could be imposed on the 3D collagen and cells within the collagen for several days (with elastic recoil driven by the polyurethane) without the typical matrix contraction by fibroblasts when cultured in 3D collagen gels. We show lung fibroblast-to-myofibroblast differentiation under 30%, 0.1 Hz dynamic strain to validate the model and demonstrate its usefulness for a wide range of tissue engineering applications.
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Affiliation(s)
- Alice A Tomei
- Institute of Bioengineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), SV-LMBM, Station 15, 1015 Lausanne, Switzerland
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Migliavacca F, Gervaso F, Prosi M, Zunino P, Minisini S, Formaggia L, Dubini G. Expansion and drug elution model of a coronary stent. Comput Methods Biomech Biomed Engin 2008; 10:63-73. [PMID: 18651272 DOI: 10.1080/10255840601071087] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
The present study illustrates a possible methodology to investigate drug elution from an expanded coronary stent. Models based on finite element method have been built including the presence of the atherosclerotic plaque, the artery and the coronary stent. These models take into account the mechanical effects of the stent expansion as well as the effect of drug transport from the expanded stent into the arterial wall. Results allow to quantify the stress field in the vascular wall, the tissue prolapse within the stent struts, as well as the drug concentration at any location and time inside the arterial wall, together with several related quantities as the drug dose and the drug residence times.
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Affiliation(s)
- F Migliavacca
- Laboratory of Biological Structure Mechanics, Department of Structural Engineering, Politecnico di Milano, Milan, Italy.
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35
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Gervaso F, Capelli C, Petrini L, Lattanzio S, Di Virgilio L, Migliavacca F. On the effects of different strategies in modelling balloon-expandable stenting by means of finite element method. J Biomech 2008; 41:1206-12. [DOI: 10.1016/j.jbiomech.2008.01.027] [Citation(s) in RCA: 108] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2007] [Revised: 01/22/2008] [Accepted: 01/28/2008] [Indexed: 10/22/2022]
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36
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Gervaso F, Pennati G, Boschetti F. Effect of geometrical imperfections in confined compression tests on parameter evaluation of hydrated soft tissues. J Biomech 2007; 40:3041-4. [PMID: 17418850 DOI: 10.1016/j.jbiomech.2007.02.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [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: 12/27/2006] [Accepted: 02/20/2007] [Indexed: 11/23/2022]
Abstract
Experimental tests, such as the confined and unconfined compression and the indentation tests, are traditionally used to determine the poroelastic properties of hydrated soft tissues (HSTs). The purpose of this study was to quantitatively evaluate the reliability of H(A) and K values as identified from experimental confined test data, estimating the errors that could occur in several situations with more realistic sample geometry and boundary conditions. Finite element models of the step-wise stress-relaxation confined compression tests on HSTs were developed including geometrical imperfections of the sample and the presence of a gap between the piston and the confining chamber. The errors occurring when H(A) and K were estimated by means of the analytical solution of the 1-D confined compression problem were assessed. Results of the analysis indicate that errors in the parameter estimation due to geometrical inaccuracies of the sample can be eliminated by applying a 5% strain pre-compression to the sample. Gap errors are negligible for H(A), can reach 20% for K, and cannot be eliminated by a pre-compression of the sample.
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Affiliation(s)
- Francesca Gervaso
- Laboratory of Biological Structure Mechanics, Department of Structural Engineering, Politecnico di Milano, Milan, Italy
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37
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Boschetti F, Gervaso F, Pennati G, Peretti GM, Vena P, Dubini G. Poroelastic numerical modelling of natural and engineered cartilage based on in vitro tests. Biorheology 2006; 43:235-47. [PMID: 16912397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
The mechanisms underlying the ability of articular cartilage to withstand and distribute the loads applied across diarthrodial joints have been widely studied. Experimental tests have been done under several configurations to reveal the tissue response to mechanical stimuli, and theoretical models have been developed for the interpretation of the experimental results. The experiments demonstrated that the tissue is non-linear with strain, both in tension and in compression, non-linear with direction of stimulus, anisotropic in tension and compression, non-homogeneous with depth, resulting in depth dependent mechanical properties, and presents fluid dependent and fluid independent viscoelasticity. None of the models up to now developed is able to describe the whole set of responses of such a complex tissue. The purpose of this study was to develop a combined experimental-numerical approach for the proper description of the cartilage response under confined and unconfined compression. We defined a series of experimental tests to be performed on disks of natural and engineered cartilage and we developed a numerical model for cartilage, based on the biphasic theory, which potentially includes the tension-compression non-linearity, the strain non-linearity and the fluid independent viscoelasticity. The model successfully simulated the confined and unconfined compression experiments performed on disks of natural and engineered cartilage, and was also used to identify parameters of difficult experimental evaluation, such as the collagen stiffness and the permeability. In conclusion, the use of our model in combination with biomechanical experimental testing seems a valuable tool to analyze the mechanical properties of natural cartilage and the biofunctionality of tissue engineered cartilage.
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Affiliation(s)
- Federica Boschetti
- Laboratory of Biological Structure Mechanics, Department of Structural Engineering, Politecnico di Milano, Italy.
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38
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Socci L, Pennati G, Gervaso F, Vena P. An axisymmetric computational model of skin expansion and growth. Biomech Model Mechanobiol 2006; 6:177-88. [PMID: 16767451 DOI: 10.1007/s10237-006-0047-9] [Citation(s) in RCA: 24] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2005] [Accepted: 03/25/2006] [Indexed: 10/24/2022]
Abstract
Skin expansion is the principal technique used in plastic surgery to repair large cutaneous defects, typically after tumour removal, burn care, craniofacial surgery and post-mastectomy breast reconstruction. It allows a gain of new tissue by means of gradual expansion of a prosthesis, surgically implanted beneath the patient's skin. Nevertheless, wide clinical use is not supported by a deep quantitative knowledge of the phenomena occurring during the expansion. A finite element model of the skin expansion was developed to evaluate the stresses and the strains of the skin due to the expander inflation and validated by proper in vitro experiments; furthermore, a growth model based on the mechanical stimulus was implemented to estimate the skin area gain. The developed computational approach, composed of the skin expansion model interaction and the growth law, proved its validity to investigate skin expansion phenomena: its use suggests a new predictive tool to optimize clinical procedures and the expander devices' design.
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Affiliation(s)
- L Socci
- Laboratory of Biological Structure Mechanics, Department of Structural Engineering, Politecnico di Milano, Piazza Leonardo da Vinci 32, Milan, Italy.
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39
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Gervaso F, Pennati G, Vena P, Boschetti F. Numerical modelling of cartilage based on compression tests. J Biomech 2006. [DOI: 10.1016/s0021-9290(06)84654-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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40
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Zunino P, Prosi M, Gervaso F, Minisini S, Formaggia L. A computational model for drug release in coronary drug eluting stents. J Biomech 2006. [DOI: 10.1016/s0021-9290(06)84132-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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41
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Pennati G, Socci L, Gervaso F, Dubini G, Festa P, Luisi V, Migliavacca F. Fluid dynamics in patient-specific models of cavopulmonary connections. J Biomech 2006. [DOI: 10.1016/s0021-9290(06)84114-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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42
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Socci L, Gervaso F, Migliavacca F, Pennati G, Dubini G, Ait-Ali L, Festa P, Amoretti F, Scebba L, Luisi VS. Computational fluid dynamics in a model of the total cavopulmonary connection reconstructed using magnetic resonance images. Cardiol Young 2005; 15 Suppl 3:61-7. [PMID: 16248928 DOI: 10.1017/s1047951105001666] [Citation(s) in RCA: 13] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The recent developments in imaging techniques have created new opportunities to give an accurate description of the three-dimensional morphology of vessels. Such three-dimensional reconstruction of anatomical structures from medical images has achieved importance in several applications, such as the reconstruction of human bones, spine portions, and vascular districts.
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Affiliation(s)
- Laura Socci
- Structural Engineering Department and Laboratory of Biological Structure Mechanics, Politecnico di Milano, Milan, Italy.
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43
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Boschetti F, Pennati G, Gervaso F, Peretti GM, Dubini G. Biomechanical properties of human articular cartilage under compressive loads. Biorheology 2004; 41:159-66. [PMID: 15299249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/30/2023]
Abstract
The function of articular cartilage is to support and distribute loads and to provide lubrication in the diarthrodial joints. Cartilage function is described by proper mechanical and rheological properties, strain and depth-dependent, which are not completely assessed. Unconfined and confined compression are commonly used to evaluate the Young's modulus (E) and the aggregate modulus (H(A)), respectively. The Poisson's ratio (nu) can be calculated indirectly from the equilibrium compression data, or using the biphasic indentation technique; it has recently been optically evaluated by using video microscopy during unconfined compression. The transient response of articular cartilage during confined compression depends on its permeability k; a constant value of k can be easily identified by a simple analytical model of confined compression tests, whereas more complex models or direct measurements (permeation tests) are needed to study the permeability dependence on deformation. A poroelastic finite element model of articular cartilage was developed for this purpose. The elastic parameters (E,nu) of the model were evaluated performing unconfined compression creep tests on human articular cartilage disks, whereas k was identified from the confined test response. Our combined experimental and computational method can be used to identify the parameters that define the permeability dependence on deformation, as a function of depth from articular surface.
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Affiliation(s)
- Federica Boschetti
- Laboratory of Biological Structure Mechanics, Department of Structural Engineering and Department of Bioengineering, Politecnico di Milano, Italy.
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Kull S, Gervaso F, Soldani G, Bedini R, Luisi VS. The role of hydraulic circulatory duplicators in the study of surgical operations for complex congenital cardiac diseases. Cardiol Young 2004; 14 Suppl 3:4-10. [PMID: 15903095 DOI: 10.1017/s1047951104006481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
a hydraulic circulatory duplicator is a hydraulic circuit, closed or open that physically reproduces one human district, along with the effects of any connected apparatus, on local fluid dynamics. such hydraulic circulatory duplicators are usually made up of rigid or deformable pipes, pressure loss generators, such as valves or sponge elements, compliant elements such as a pneumatic room, elastic elements, pumping elements, which may be centrifugal, axial, or roller, and tanks. all the elements are connected by joints. the systems are completed by transducers of pressure or flow, and systems for visualising flow or measuring other parameters of interest.
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Affiliation(s)
- Silvia Kull
- Laboratory for Biomaterials and Graft Technology, Institute of Clinical Physiology, National Research Council, Massa, Italy.
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Pennati G, Migliavacca F, Gervaso F, Dubini G. Assessment by computational and in vitro studies of the blood flow rate through modified Blalock-Taussig shunts. Cardiol Young 2004; 14 Suppl 3:24-9. [PMID: 15903098 DOI: 10.1017/s1047951104006511] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
surgical repairs of many severe congenital cardiac malformations, such as the procedures used to redirect the flow of blood in the setting of absent or suboptimal perfusions, are performed either using direct vascular anastomosis, or by the insertion of interpositioned prosthetic shunts. examples of these applications can be found when considering those cardiac malformations characterized by the common physiological feature of having a single pumping ventricle, usually due to the incomplete and rudimentary form of the complementary ventricle. in this situation, since the circulation depends on the functionally single ventricle, pulmonary perfusion can be derived from the systemic circulation through a synthetic tube (gore-tex®, falstaff, az, usa), usually connected between the brachiocephalic or subclavian arteries and the right or left pulmonary arteries. this arrangement is called the modified blalock-taussig shunt (fig. 1, left). the effect is to produce parallel circulations (fig. 1, right). survival at this stage is closely dependent on the balance between systemic and pulmonary flows, and thus on the fluid-dynamics through the interposition shunt, which is often the sole source of pulmonary perfusion.
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Affiliation(s)
- Giancarlo Pennati
- Bioengineering Department, Laboratory of Biological Structure Mechanics, Politecnico di Milano, Milan, Italy.
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Gervaso F, Kull S, Pennati G, Migliavacca F, Dubini G, Luisi VS. The effect of the position of an additional systemic-to-pulmonary shunt on the fluid dynamics of the bidirectional cavo-pulmonary anastomosis. Cardiol Young 2004; 14 Suppl 3:38-43. [PMID: 15903101 DOI: 10.1017/s1047951104006547] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
the bidirectional cavo-pulmonary anastomosis is a well-established palliative procedure for patients with a functionally univentricular circulation. it is usually considered one step in preparation for fontan procedure, but it may be performed as a long-term palliation for patients deemed to be at high-risk. in this subset of patients, a valuable surgical option could be to add, or maintain, an additional source of flow of blood to the lungs, either derived from a patent but banded trunk or one protected by native pulmonary stenosis, or a systemic-to-pulmonary arterial shunt. the risk and benefits of providing an additional source of pulmonary flow after construction of a bidirectional cavopulmonary anastomosis are strongly debated. in terms of benefit, the arterial saturation of oxygen is increased due to the greater ratio of pulmonary-to-systemic flow, arteriovenous fistulas are prevented and, as a consequence of the arterial pulsatile flow, the pulmonary arteries are stimulated to grow. the most significant drawbacks are volume overload of the functionally single ventricle, and higher pressures compared to an isolated bidirectional cavopulmonary anastomosis.
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Affiliation(s)
- Francesca Gervaso
- Bioengineering Department and Laboratory of Biological Structure Mechanics, Politecnico di Milano, Milan, Italy.
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