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Zahel P, Bruggink V, Hülsmann J, Steiniger F, Hofstetter RK, Heinzel T, Beekmann U, Werz O, Kralisch D. Exploring Microemulsion Systems for the Incorporation of Glucocorticoids into Bacterial Cellulose: A Novel Approach for Anti-Inflammatory Wound Dressings. Pharmaceutics 2024; 16:504. [PMID: 38675165 PMCID: PMC11054342 DOI: 10.3390/pharmaceutics16040504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Revised: 03/05/2024] [Accepted: 03/20/2024] [Indexed: 04/28/2024] Open
Abstract
The effective pharmacological treatment of inflamed wounds such as pyoderma gangraenosum remains challenging, as the systemic application of suitable drugs such as glucocorticoids is compromised by severe side effects and the inherent difficulties of wounds as drug targets. Furthermore, conventional semi-solid formulations are not suitable for direct application to open wounds. Thus, the treatment of inflamed wounds could considerably benefit from the development of active wound dressings for the topical administration of anti-inflammatory drugs. Although bacterial cellulose appears to be an ideal candidate for this purpose due to its known suitability for advanced wound care and as a drug delivery system, the incorporation of poorly water-soluble compounds into the hydrophilic material still poses a problem. The use of microemulsions could solve that open issue. The present study therefore explores their use as a novel approach to incorporate poorly water-soluble glucocorticoids into bacterial cellulose. Five microemulsion formulations were loaded with hydrocortisone or dexamethasone and characterized in detail, demonstrating their regular microstructure, biocompatibility and shelf-life stability. Bacterial cellulose was successfully loaded with the formulations as confirmed by transmission electron microscopy and surprisingly showed homogenous incorporation, even of w/o type microemulsions. High and controllable drug permeation through Strat-M® membranes was observed, and the anti-inflammatory activity for permeated glucocorticoids was confirmed in vitro. This study presents a novel approach for the development of anti-inflammatory wound dressings using bacterial cellulose in combination with microemulsions.
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Affiliation(s)
- Paul Zahel
- JeNaCell GmbH—An Evonik Company, 07745 Jena, Germany; (P.Z.); (V.B.); (U.B.)
- Department of Pharmaceutical/Medicinal Chemistry, Institute of Pharmacy, Friedrich Schiller University, 07743 Jena, Germany; (R.K.H.); (O.W.)
| | - Vera Bruggink
- JeNaCell GmbH—An Evonik Company, 07745 Jena, Germany; (P.Z.); (V.B.); (U.B.)
- Department of Pharmaceutical/Medicinal Chemistry, Institute of Pharmacy, Friedrich Schiller University, 07743 Jena, Germany; (R.K.H.); (O.W.)
| | - Juliana Hülsmann
- Institute of Biochemistry and Biophysics, Center for Molecular Biomedicine, Friedrich Schiller University, 07745 Jena, Germany; (J.H.); (T.H.)
| | - Frank Steiniger
- Electron Microscopy Center, University Hospital Jena, Friedrich Schiller University, 07743 Jena, Germany;
| | - Robert K. Hofstetter
- Department of Pharmaceutical/Medicinal Chemistry, Institute of Pharmacy, Friedrich Schiller University, 07743 Jena, Germany; (R.K.H.); (O.W.)
| | - Thorsten Heinzel
- Institute of Biochemistry and Biophysics, Center for Molecular Biomedicine, Friedrich Schiller University, 07745 Jena, Germany; (J.H.); (T.H.)
| | - Uwe Beekmann
- JeNaCell GmbH—An Evonik Company, 07745 Jena, Germany; (P.Z.); (V.B.); (U.B.)
| | - Oliver Werz
- Department of Pharmaceutical/Medicinal Chemistry, Institute of Pharmacy, Friedrich Schiller University, 07743 Jena, Germany; (R.K.H.); (O.W.)
| | - Dana Kralisch
- JeNaCell GmbH—An Evonik Company, 07745 Jena, Germany; (P.Z.); (V.B.); (U.B.)
- Evonik Operations GmbH, 45128 Essen, Germany
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Pereira L, Echarte L, Romero M, Grazioli G, Pérez-Campos H, Francia A, Vicentino W, Mombrú AW, Faccio R, Álvarez I, Touriño C, Pardo H. Synthesis and characterization of a bovine collagen: GAG scaffold with Uruguayan raw material for tissue engineering. Cell Tissue Bank 2024; 25:123-142. [PMID: 34536180 DOI: 10.1007/s10561-021-09960-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2020] [Accepted: 09/06/2021] [Indexed: 11/28/2022]
Abstract
Tissue engineering (TE) and regenerative medicine offer strategies to improve damaged tissues by using scaffolds and cells. The use of collagen-based biomaterials in the field of TE has been intensively growing over the past decades. Mesenchymal stromal cells (MSCs) and dental pulp stem cells (DPSCs) are promising cell candidates for development of clinical composites. In this study, we proposed the development of a bovine collagen type I: chondroitin-6-sulphate (CG) scaffold, obtained from Uruguayan raw material (certified as free bovine spongiform encephalopathy), with CG crosslinking enhancement using different gamma radiation doses. Structural, biomechanical and chemical characteristics of the scaffolds were assessed by Scanning Electron Microscopy, axial tensile tests, FT-IR and Raman Spectroscopy, respectively. Once we selected the most appropriate scaffold for future use as a TE product, we studied the behavior of MSCs and DPSCs cultured on the scaffold by cytotoxicity, proliferation and differentiation assays. Among the diverse porous scaffolds obtained, the one with the most adequate properties was the one exposed to 15 kGy of gamma radiation. This radiation dose contributed to the crosslinking of molecules, to the formation of new bonds and/or to the reorganization of the collagen fibers. The selected scaffold was non-cytotoxic for the tested cells and a suitable substrate for cell proliferation. Furthermore, the scaffold allowed MSCs differentiation to osteogenic, chondrogenic, and adipogenic lineages. Thus, this work shows a promising approach to the synthesis of a collagen-scaffold suitable for TE.
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Affiliation(s)
- L Pereira
- Centro NanoMat, Facultad de Química, Instituto Polo Tecnológico de Pando, UdelaR, Camino Aparicio Saravia s/n, 9100, Pando, Canelones, Uruguay
| | - L Echarte
- Área Terapia Celular y Medicina Regenerativa (ATCMR), Departamento Básico de Medicina, Hospital de Clínicas, Facultad de Medicina, Universidad de la República (UdelaR), Montevideo, Uruguay
| | - M Romero
- Cátedra de Física, Facultad de Química, DETEMA, Universidad de la República (UdelaR), General Flores, 2124, 11800, Montevideo, Uruguay
| | - G Grazioli
- Cátedra de Materiales Dentales, Facultad de Odontología, Universidad de la República (UdelaR), Montevideo, Uruguay
| | - H Pérez-Campos
- Instituto Nacional de Donación y Trasplante (INDT), Ministerio de salud Pública-Hospital de Clínicas, Facultad de Medicina, Universidad de la República (UdelaR), Montevideo, Ministerio, Uruguay
| | - A Francia
- Fisiología general y bucodental, Facultad de Odontología, Universidad de la República (UdelaR), Montevideo, Uruguay
| | - W Vicentino
- Instituto Nacional de Donación y Trasplante (INDT), Ministerio de salud Pública-Hospital de Clínicas, Facultad de Medicina, Universidad de la República (UdelaR), Montevideo, Ministerio, Uruguay
| | - A W Mombrú
- Cátedra de Física, Facultad de Química, DETEMA, Universidad de la República (UdelaR), General Flores, 2124, 11800, Montevideo, Uruguay
| | - R Faccio
- Cátedra de Física, Facultad de Química, DETEMA, Universidad de la República (UdelaR), General Flores, 2124, 11800, Montevideo, Uruguay
| | - I Álvarez
- Instituto Nacional de Donación y Trasplante (INDT), Ministerio de salud Pública-Hospital de Clínicas, Facultad de Medicina, Universidad de la República (UdelaR), Montevideo, Ministerio, Uruguay
| | - C Touriño
- Área Terapia Celular y Medicina Regenerativa (ATCMR), Departamento Básico de Medicina, Hospital de Clínicas, Facultad de Medicina, Universidad de la República (UdelaR), Montevideo, Uruguay.
| | - H Pardo
- Cátedra de Física, Facultad de Química, DETEMA, Universidad de la República (UdelaR), General Flores, 2124, 11800, Montevideo, Uruguay.
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Hage W, Karam Sarkis D, Kallassy M, Mallah M, Zogheib C. In vitro evaluation of enterococcus faecalis growth in different conditions on dentinal substrate. Biomater Investig Dent 2023; 10:2287668. [PMID: 38204472 PMCID: PMC10763833 DOI: 10.1080/26415275.2023.2287668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Accepted: 11/21/2023] [Indexed: 01/12/2024] Open
Abstract
The aim of this study was to find the best growth conditions of Enterococcus faecalis on a dentinal substrate in order to be used for the development of a complex multispecies endodontic biofilm. Fifty two single rooted extracted human teeth and fifty two dentinal disks were mechanically prepared, sterilized, inoculated with Enterococcus faecalis and divided randomly into 8 groups where the substrate, the inoculation technique, the medium type, and the pre-treatment with collagen type I was varied. Bacterial count was evaluated and colonies were counted and confirmed by colony morphology observation on blood agar and Gram staining at 3,7, 14, 21, and 28 days. On day 14 of the culture, the bacterial count showed the highest values in all groups. Root canals and Type 1 collagen pre-treatment and glucose proved to have significant positive effects on the bacterial count compared to dentinal disks and BHI media only. The increase in bacterial count found with the direct inoculation technique was not significantly different from that of the indirect technique.
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Affiliation(s)
- Wajih Hage
- Departement of Endodontics, Saint Joseph University, Beirut, Lebanon
| | | | | | - May Mallah
- Departement of Microbiology, Saint Joseph University, Beirut, Lebanon
| | - Carla Zogheib
- Departement of Endodontics, Saint Joseph University, Beirut, Lebanon
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Emami S, Ebrahimi M. Bioactive wound powders as wound healing dressings and drug delivery systems. POWDER TECHNOL 2023. [DOI: 10.1016/j.powtec.2023.118501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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El-Raheem HA, Hassan RYA, Khaled R, El-Dek S, Farghali A, El-Sherbiny IM. A better understanding of the polymeric irradiation using physico-electrochemical characteristics. RADIATION EFFECTS AND DEFECTS IN SOLIDS 2021; 176:1021-1037. [DOI: 10.1080/10420150.2021.1990926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2021] [Accepted: 09/27/2021] [Indexed: 09/02/2023]
Affiliation(s)
- Hany Abd El-Raheem
- Center of Materials Sciences, Zewail City of Science and Technology, Giza, Egypt
- Materials Science and Nanotechnology Department, Faculty of Postgraduate Studies for Advanced Sciences, Beni-Suef University, Beni-Suef, Egypt
| | - Rabeay Y. A. Hassan
- Center of Materials Sciences, Zewail City of Science and Technology, Giza, Egypt
- Applied Organic Chemistry Department, National Research Centre (NRC), Giza, Egypt
| | - Rehab Khaled
- Chemistry Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt
| | - S.I. El-Dek
- Materials Science and Nanotechnology Department, Faculty of Postgraduate Studies for Advanced Sciences, Beni-Suef University, Beni-Suef, Egypt
| | - Ahmed Farghali
- Materials Science and Nanotechnology Department, Faculty of Postgraduate Studies for Advanced Sciences, Beni-Suef University, Beni-Suef, Egypt
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6
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Grandis RAD, Miotto LN, Genaro LE, Migliatti Polli L, Plepis AMDG, Rodrigues FT, Martins VDCA, Pereira Franchi L, Scarel-Caminaga RM, Sidorenko de Oliveira Capote T. In Vitro Evaluation of Acellular Collagen Matrices Derived from Porcine Pericardium: Influence of the Sterilization Method on Its Biological Properties. MATERIALS (BASEL, SWITZERLAND) 2021; 14:6255. [PMID: 34771781 PMCID: PMC8584648 DOI: 10.3390/ma14216255] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 08/29/2021] [Accepted: 09/02/2021] [Indexed: 01/31/2023]
Abstract
The aim of this study were characterize acellular collagen matrices derived from porcine pericardium (PP) and to evaluate their properties after sterilization by ethylene oxide and gamma ray. PP matrices were subjected to alkaline hydrolysis (AH), and samples were characterized for biological stability, membrane thickness measurements, differential scanning calorimetry (DSC) and scanning electron microscopy (SEM). Subsequently, the matrices were frozen, lyophilized and sterilized by ethylene oxide or gamma radiation. For in vitro assays, CHO-K1 cell culture was used and evaluated for cytotoxicity, clonogenic survival assay, genotoxicity and mutagenicity. Analysis of variance (ANOVA) was used, followed by Dunnett's post-test, with a significance level of 5%. After AH, there was no significant change in matrix thickness. The relative biodegradability of the material after implantation was observed. Morphology and dimensions had small changes after AH. As for cell viability, none of the tested matrices showed a statistically significant difference (p > 0.05; Dunnett) regardless of the sterilization method. Furthermore, it was found that PP matrices did not interfere with the proliferation capacity of CHO-K1 cells (p > 0.05; Dunnett). As for genotoxicity, when sterilized with ethylene oxide (NP, P12 and P24), it showed genotoxic potential, but it was not genotoxic when sterilized by gamma radiation. No mutagenic effects were observed in either group. PP-derived collagen matrices hydrolyzed at different times were not cytotoxic. It is concluded that the best method of sterilization is through gamma radiation, since no significant changes were observed in the properties of the PP matrices.
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Affiliation(s)
- Rone Aparecido De Grandis
- Faculty of Pharmaceutical Sciences-FCFar, Paulista State University, Araraquara 14801-903, SP, Brazil; (R.A.D.G.); (L.M.P.)
| | - Larissa Natiele Miotto
- Department of Morphology, Genetics, Orthodontic and Pediatric Dentistry, Araraquara School of Dentistry, Paulista State University, Araraquara 14801-903, SP, Brazil; (L.N.M.); (L.E.G.); (R.M.S.-C.)
| | - Luis Eduardo Genaro
- Department of Morphology, Genetics, Orthodontic and Pediatric Dentistry, Araraquara School of Dentistry, Paulista State University, Araraquara 14801-903, SP, Brazil; (L.N.M.); (L.E.G.); (R.M.S.-C.)
| | - Larissa Migliatti Polli
- Faculty of Pharmaceutical Sciences-FCFar, Paulista State University, Araraquara 14801-903, SP, Brazil; (R.A.D.G.); (L.M.P.)
| | - Ana Maria de Guzzi Plepis
- Department of Chemistry and Molecular Physics, Institute of Chemistry of São Carlos, University of São Paulo, Sao Carlos 13566-590, SP, Brazil; (A.M.d.G.P.); (F.T.R.); (V.d.C.A.M.)
| | - Fabiana Tessari Rodrigues
- Department of Chemistry and Molecular Physics, Institute of Chemistry of São Carlos, University of São Paulo, Sao Carlos 13566-590, SP, Brazil; (A.M.d.G.P.); (F.T.R.); (V.d.C.A.M.)
| | - Virginia da Conceição Amaro Martins
- Department of Chemistry and Molecular Physics, Institute of Chemistry of São Carlos, University of São Paulo, Sao Carlos 13566-590, SP, Brazil; (A.M.d.G.P.); (F.T.R.); (V.d.C.A.M.)
| | - Leonardo Pereira Franchi
- Department of Genetics, Faculty of Medicine of Ribeirão Preto, University of São Paulo, Sao Carlos 13566-590, SP, Brazil;
| | - Raquel Mantuaneli Scarel-Caminaga
- Department of Morphology, Genetics, Orthodontic and Pediatric Dentistry, Araraquara School of Dentistry, Paulista State University, Araraquara 14801-903, SP, Brazil; (L.N.M.); (L.E.G.); (R.M.S.-C.)
| | - Ticiana Sidorenko de Oliveira Capote
- Department of Morphology, Genetics, Orthodontic and Pediatric Dentistry, Araraquara School of Dentistry, Paulista State University, Araraquara 14801-903, SP, Brazil; (L.N.M.); (L.E.G.); (R.M.S.-C.)
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7
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Salvatore L, Gallo N, Natali ML, Terzi A, Sannino A, Madaghiele M. Mimicking the Hierarchical Organization of Natural Collagen: Toward the Development of Ideal Scaffolding Material for Tissue Regeneration. Front Bioeng Biotechnol 2021; 9:644595. [PMID: 33987173 PMCID: PMC8112590 DOI: 10.3389/fbioe.2021.644595] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 03/15/2021] [Indexed: 12/11/2022] Open
Abstract
Biological materials found in living organisms, many of which are proteins, feature a complex hierarchical organization. Type I collagen, a fibrous structural protein ubiquitous in the mammalian body, provides a striking example of such a hierarchical material, with peculiar architectural features ranging from the amino acid sequence at the nanoscale (primary structure) up to the assembly of fibrils (quaternary structure) and fibers, with lengths of the order of microns. Collagen plays a dominant role in maintaining the biological and structural integrity of various tissues and organs, such as bone, skin, tendons, blood vessels, and cartilage. Thus, "artificial" collagen-based fibrous assemblies, endowed with appropriate structural properties, represent ideal substrates for the development of devices for tissue engineering applications. In recent years, with the ultimate goal of developing three-dimensional scaffolds with optimal bioactivity able to promote both regeneration and functional recovery of a damaged tissue, numerous studies focused on the capability to finely modulate the scaffold architecture at the microscale and the nanoscale in order to closely mimic the hierarchical features of the extracellular matrix and, in particular, the natural patterning of collagen. All of these studies clearly show that the accurate characterization of the collagen structure at the submolecular and supramolecular levels is pivotal to the understanding of the relationships between the nanostructural/microstructural properties of the fabricated scaffold and its macroscopic performance. Several studies also demonstrate that the selected processing, including any crosslinking and/or sterilization treatments, can strongly affect the architecture of collagen at various length scales. The aim of this review is to highlight the most recent findings on the development of collagen-based scaffolds with optimized properties for tissue engineering. The optimization of the scaffolds is particularly related to the modulation of the collagen architecture, which, in turn, impacts on the achieved bioactivity.
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Affiliation(s)
- Luca Salvatore
- Department of Engineering for Innovation, University of Salento, Lecce, Italy
| | - Nunzia Gallo
- Department of Engineering for Innovation, University of Salento, Lecce, Italy
| | - Maria Lucia Natali
- Department of Engineering for Innovation, University of Salento, Lecce, Italy
| | - Alberta Terzi
- Institute of Crystallography, National Research Council, Bari, Italy
| | - Alessandro Sannino
- Department of Engineering for Innovation, University of Salento, Lecce, Italy
| | - Marta Madaghiele
- Department of Engineering for Innovation, University of Salento, Lecce, Italy
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Caballero Aguilar LM, Duchi S, Onofrillo C, O'Connell CD, Di Bella C, Moulton SE. Formation of alginate microspheres prepared by optimized microfluidics parameters for high encapsulation of bioactive molecules. J Colloid Interface Sci 2020; 587:240-251. [PMID: 33360897 DOI: 10.1016/j.jcis.2020.12.026] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 12/08/2020] [Accepted: 12/09/2020] [Indexed: 12/31/2022]
Abstract
Drug delivery systems such as microspheres have shown potential in releasing biologicals effectively for tissue engineering applications. Microfluidic systems are especially attractive for generating microspheres as they produce microspheres of controlled-size and in low volumes, using micro-emulsion processes. However, the flow rate dependency on the encapsulation of molecules at a microscale is poorly understood. In particular, the flow rate and pressure parameters might influence the droplet formation and drug encapsulation efficiency. We evaluated the parameters within a two-reagent flow focusing microfluidic chip under continuous formation of hydrogel particles using a flourinated oil and an ionic crosslinkable alginate hydrogel. Fluorescein isothiocyanate-dextran sulfate (FITC-dextran sulfate MW: 40 kDa) was used to evaluate the variation of the encapsulation efficiency with the flow parameters, optimizing droplets and microsphere formation. The ideal flow rates allowing for maximum encapsulation efficiency, were utilised to form bioactive microspheres by delivering transforming growth factor beta-3 (TGFβ-3) in cell culture media. Finally, we evaluated the potential of microfluidic-formed microspheres to be included within biological environments. The biocompatibility of the microspheres was tested over 28 days using adult human mesenchymal stem cells (hMSCs). The release profile of the growth factors from microspheres showed a sustained release in media, after an initial burst, up to 30 days. The metabolic activity of the cells cultured in the presence of the microspheres was similar to controls, supporting the biocompatibility of this approach. The fine-tuned parameters for alginate hydrogel to form microspheres have potential in encapsulating and preserving functional structure of bioactive agents for future tissue engineering applications.
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Affiliation(s)
- Lilith M Caballero Aguilar
- ARC Centre of Excellence for Electromaterials Science, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Victoria 3122, Australia; BioFab3D, Aikenhead Centre for Medical Discovery, St Vincent's Hospital, Melbourne, Australia
| | - Serena Duchi
- BioFab3D, Aikenhead Centre for Medical Discovery, St Vincent's Hospital, Melbourne, Australia; Department of Surgery, St Vincent's Hospital, University of Melbourne, Clinical Sciences Building, 29 Regent Street, 3065 Fitzroy, VIC, Australia; ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, Innovation Campus, University of Wollongong, NSW, Australia
| | - Carmine Onofrillo
- BioFab3D, Aikenhead Centre for Medical Discovery, St Vincent's Hospital, Melbourne, Australia; Department of Surgery, St Vincent's Hospital, University of Melbourne, Clinical Sciences Building, 29 Regent Street, 3065 Fitzroy, VIC, Australia; ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, Innovation Campus, University of Wollongong, NSW, Australia
| | - Cathal D O'Connell
- BioFab3D, Aikenhead Centre for Medical Discovery, St Vincent's Hospital, Melbourne, Australia; School of Engineering, RMIT University, Melbourne, VIC 3001, Australia
| | - Claudia Di Bella
- BioFab3D, Aikenhead Centre for Medical Discovery, St Vincent's Hospital, Melbourne, Australia; Department of Surgery, St Vincent's Hospital, University of Melbourne, Clinical Sciences Building, 29 Regent Street, 3065 Fitzroy, VIC, Australia; Department of Medicine, St Vincent's Hospital Melbourne, 3065 Fitzroy, VIC, Australia
| | - Simon E Moulton
- ARC Centre of Excellence for Electromaterials Science, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Victoria 3122, Australia; BioFab3D, Aikenhead Centre for Medical Discovery, St Vincent's Hospital, Melbourne, Australia; Iverson Health Innovation Research Institute, Swinburne University of Technology, Hawthorn, Australia.
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Gerasimenko AY, Zhurbina NN, Cherepanova NG, Semak AE, Zar VV, Fedorova YO, Eganova EM, Pavlov AA, Telyshev DV, Selishchev SV, Glukhova OE. Frame Coating of Single-Walled Carbon Nanotubes in Collagen on PET Fibers for Artificial Joint Ligaments. Int J Mol Sci 2020; 21:ijms21176163. [PMID: 32859107 PMCID: PMC7503285 DOI: 10.3390/ijms21176163] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 08/18/2020] [Accepted: 08/20/2020] [Indexed: 12/24/2022] Open
Abstract
The coating formation technique for artificial knee ligaments was proposed, which provided tight fixation of ligaments of polyethylene terephthalate (PET) fibers as a result of the healing of the bone channel in the short-term period after implantation. The coating is a frame structure of single-walled carbon nanotubes (SWCNT) in a collagen matrix, which is formed by layer-by-layer solidification of an aqueous dispersion of SWCNT with collagen during spin coating and controlled irradiation with IR radiation. Quantum mechanical method SCC DFTB, with a self-consistent charge, was used. It is based on the density functional theory and the tight-binding approximation. The method established the optimal temperature and time for the formation of the equilibrium configurations of the SWCNT/collagen type II complexes to ensure maximum binding energies between the nanotube and the collagen. The highest binding energies were observed in complexes with SWCNT nanometer diameter in comparison with subnanometer SWCNT. The coating had a porous structure-pore size was 0.5-6 μm. The process of reducing the mass and volume of the coating with the initial biodegradation of collagen after contact with blood plasma was demonstrated. This is proved by exceeding the intensity of the SWCNT peaks G and D after contact with the blood serum in the Raman spectrum and by decreasing the intensity of the main collagen bands in the SWCNT/collagen complex frame coating. The number of pores and their size increased to 20 μm. The modification of the PET tape with the SWCNT/collagen coating allowed to increase its hydrophilicity by 1.7 times compared to the original PET fibers and by 1.3 times compared to the collagen coating. A reduced hemolysis level of the PET tape coated with SWCNT/collagen was achieved. The SWCNT/collagen coating provided 2.2 times less hemolysis than an uncoated PET implant. MicroCT showed the effective formation of new bone and dense connective tissue around the implant. A decrease in channel diameter from 2.5 to 1.7 mm was detected at three and, especially, six months after implantation of a PET tape with SWCNT/collagen coating. MicroCT allowed us to identify areas for histological sections, which demonstrated the favorable interaction of the PET tape with the surrounding tissues. In the case of using the PET tape coated with SWCNT/collagen, more active growth of connective tissue with mature collagen fibers in the area of implantation was observed than in the case of only collagen coating. The stimulating effect of SWCNT/collagen on the formation of bone trabeculae around and inside the PET tape was evident in three and six months after implantation. Thus, a PET tape with SWCNT/collagen coating has osteoconductivity as well as a high level of hydrophilicity and hemocompatibility.
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Affiliation(s)
- Alexander Yu. Gerasimenko
- Institute of Biomedical Systems, National Research University of Electronic Technology MIET, Shokin Square 1, Zelenograd, 124498 Moscow, Russia; (N.N.Z.); (Y.O.F.); (D.V.T.); (S.V.S.)
- Institute for Bionic Technologies and Engineering, I.M. Sechenov First Moscow State Medical University, Bolshaya Pirogovskaya street 2-4, 119991 Moscow, Russia
- Correspondence: (A.Y.G.); (O.E.G.); Tel.: +7-9267029778 (A.Y.G.)
| | - Natalia N. Zhurbina
- Institute of Biomedical Systems, National Research University of Electronic Technology MIET, Shokin Square 1, Zelenograd, 124498 Moscow, Russia; (N.N.Z.); (Y.O.F.); (D.V.T.); (S.V.S.)
| | - Nadezhda G. Cherepanova
- Department of Morphology and Veterinary Expertise, Russian State Agrarian University—Moscow Timiryazev Agricultural Academy, Timiryazevskaya street 49, 127550 Moscow, Russia; (N.G.C.); (A.E.S.)
| | - Anna E. Semak
- Department of Morphology and Veterinary Expertise, Russian State Agrarian University—Moscow Timiryazev Agricultural Academy, Timiryazevskaya street 49, 127550 Moscow, Russia; (N.G.C.); (A.E.S.)
| | - Vadim V. Zar
- Department of Traumatology and Orthopedics, M.F. Vladimirskii Moscow Regional Research and Clinical Institute, Shepkina street 61/2, 129110 Moscow, Russia;
| | - Yulia O. Fedorova
- Institute of Biomedical Systems, National Research University of Electronic Technology MIET, Shokin Square 1, Zelenograd, 124498 Moscow, Russia; (N.N.Z.); (Y.O.F.); (D.V.T.); (S.V.S.)
- Research Laboratory of Promising Processes, Scientific-Manufacturing Complex “Technological Centre”, 1-7 Shokin Square, 124498 Moscow, Russia
| | - Elena M. Eganova
- Micro- and Nanosystems Research and Development Department, Institute of Nanotechnology of Microelectronics of the Russian Academy of Sciences, 32A Leninsky Prospekt, 119991 Moscow, Russia; (E.M.E.); (A.A.P.)
| | - Alexander A. Pavlov
- Micro- and Nanosystems Research and Development Department, Institute of Nanotechnology of Microelectronics of the Russian Academy of Sciences, 32A Leninsky Prospekt, 119991 Moscow, Russia; (E.M.E.); (A.A.P.)
| | - Dmitry V. Telyshev
- Institute of Biomedical Systems, National Research University of Electronic Technology MIET, Shokin Square 1, Zelenograd, 124498 Moscow, Russia; (N.N.Z.); (Y.O.F.); (D.V.T.); (S.V.S.)
- Institute for Bionic Technologies and Engineering, I.M. Sechenov First Moscow State Medical University, Bolshaya Pirogovskaya street 2-4, 119991 Moscow, Russia
| | - Sergey V. Selishchev
- Institute of Biomedical Systems, National Research University of Electronic Technology MIET, Shokin Square 1, Zelenograd, 124498 Moscow, Russia; (N.N.Z.); (Y.O.F.); (D.V.T.); (S.V.S.)
| | - Olga E. Glukhova
- Institute for Bionic Technologies and Engineering, I.M. Sechenov First Moscow State Medical University, Bolshaya Pirogovskaya street 2-4, 119991 Moscow, Russia
- Department of Physics, Saratov State University, Astrakhanskaya street 83, 410012 Saratov, Russia
- Correspondence: (A.Y.G.); (O.E.G.); Tel.: +7-9267029778 (A.Y.G.)
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10
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Moise V, Vasilca S, Baltac A, Pintilie C, Virgolici M, Cutrubinis M, Kamerzan C, Dragan D, Ene M, Albota F, Maier S. Physicochemical study for characterization of lyophilized collagens irradiated with gamma radiation and for optimization of medical device manufacturing process. Radiat Phys Chem Oxf Engl 1993 2020. [DOI: 10.1016/j.radphyschem.2019.108658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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11
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Busra MFM, Lokanathan Y. Recent Development in the Fabrication of Collagen Scaffolds for Tissue Engineering Applications: A Review. Curr Pharm Biotechnol 2020; 20:992-1003. [PMID: 31364511 DOI: 10.2174/1389201020666190731121016] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Revised: 05/13/2019] [Accepted: 07/08/2019] [Indexed: 11/22/2022]
Abstract
Tissue engineering focuses on developing biological substitutes to restore, maintain or improve tissue functions. The three main components of its application are scaffold, cell and growthstimulating signals. Scaffolds composed of biomaterials mainly function as the structural support for ex vivo cells to attach and proliferate. They also provide physical, mechanical and biochemical cues for the differentiation of cells before transferring to the in vivo site. Collagen has been long used in various clinical applications, including drug delivery. The wide usage of collagen in the clinical field can be attributed to its abundance in nature, biocompatibility, low antigenicity and biodegradability. In addition, the high tensile strength and fibril-forming ability of collagen enable its fabrication into various forms, such as sheet/membrane, sponge, hydrogel, beads, nanofibre and nanoparticle, and as a coating material. The wide option of fabrication technology together with the excellent biological and physicochemical characteristics of collagen has stimulated the use of collagen scaffolds in various tissue engineering applications. This review describes the fabrication methods used to produce various forms of scaffolds used in tissue engineering applications.
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Affiliation(s)
- Mohammad F Mh Busra
- Tissue Engineering Centre, Faculty of Medicine, University Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Yogeswaran Lokanathan
- Tissue Engineering Centre, Faculty of Medicine, University Kebangsaan Malaysia, Kuala Lumpur, Malaysia
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12
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Yang W, Gong Y, Li W. A Review: Electrode and Packaging Materials for Neurophysiology Recording Implants. Front Bioeng Biotechnol 2020; 8:622923. [PMID: 33585422 PMCID: PMC7873964 DOI: 10.3389/fbioe.2020.622923] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Accepted: 12/10/2020] [Indexed: 01/28/2023] Open
Abstract
To date, a wide variety of neural tissue implants have been developed for neurophysiology recording from living tissues. An ideal neural implant should minimize the damage to the tissue and perform reliably and accurately for long periods of time. Therefore, the materials utilized to fabricate the neural recording implants become a critical factor. The materials of these devices could be classified into two broad categories: electrode materials as well as packaging and substrate materials. In this review, inorganic (metals and semiconductors), organic (conducting polymers), and carbon-based (graphene and carbon nanostructures) electrode materials are reviewed individually in terms of various neural recording devices that are reported in recent years. Properties of these materials, including electrical properties, mechanical properties, stability, biodegradability/bioresorbability, biocompatibility, and optical properties, and their critical importance to neural recording quality and device capabilities, are discussed. For the packaging and substrate materials, different material properties are desired for the chronic implantation of devices in the complex environment of the body, such as biocompatibility and moisture and gas hermeticity. This review summarizes common solid and soft packaging materials used in a variety of neural interface electrode designs, as well as their packaging performances. Besides, several biopolymers typically applied over the electrode package to reinforce the mechanical rigidity of devices during insertion, or to reduce the immune response and inflammation at the device-tissue interfaces are highlighted. Finally, a benchmark analysis of the discussed materials and an outlook of the future research trends are concluded.
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Affiliation(s)
- Weiyang Yang
- Microtechnology Lab, Department of Electrical and Computer Engineering, Michigan State University, East Lansing, MI, United States
| | - Yan Gong
- Microtechnology Lab, Department of Electrical and Computer Engineering, Michigan State University, East Lansing, MI, United States
| | - Wen Li
- Microtechnology Lab, Department of Electrical and Computer Engineering, Michigan State University, East Lansing, MI, United States
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13
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Pallaske F, Pallaske A, Herklotz K, Boese-Landgraf J. The significance of collagen dressings in wound management: a review. J Wound Care 2019; 27:692-702. [PMID: 30332361 DOI: 10.12968/jowc.2018.27.10.692] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Clinical experience and research has improved our understanding of wound healing which, in turn, has enabled health professionals to aid wound healing and manufacturers to develop modern wound dressings. The significant role of collagen in wound healing has led to the development of numerous products on the basis of this biological material. The main focus of this review is to provide a critical appraisal of publications about collagen and acellular collagen dressings with a fleece-like or spongy structure. It is intended for clinicians and researchers, and aims to keep them up-to-date in the complex field of interactive, collagen-based wound dressings, including their manufacture, combination possibilities, mechanisms of action, performance in the promotion of wound healing and indications. Despite the small number of clinical studies, the importance of acellular collagen dressings with a fleece- or sponge-like structure is likely to increase in the future. As there is no ideal wound dressing, the knowledge attained is meant to support health professionals in selecting the right product, and pave the way for new applications and clinical studies.
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Affiliation(s)
- Frank Pallaske
- Developer of Wound Dressings; medichema GmbH, Weststraße 57, 09112 Chemnitz, DE
| | - Anett Pallaske
- Resident Physician; Hospital of Internal Medicine II of the Kreiskrankenhaus Stollberg gGmbH, Jahnsdorfer Straße 7, 09366 Stollberg, DE
| | - Kurt Herklotz
- Microscopy expert; Institute of Biosciences of the Technische Universität Bergakademie Freiberg, Leipziger Str. 29, 09599 Freiberg, DE
| | - Joachim Boese-Landgraf
- Prof. Dr. med., former Head of the Hospital of General and Visceral Surgery, Klinikum Chemnitz gGmbH, Flemmingstraße 2, 09116 Chemnitz, DE
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14
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Yavuz B, Chambre L, Kaplan DL. Extended release formulations using silk proteins for controlled delivery of therapeutics. Expert Opin Drug Deliv 2019; 16:741-756. [PMID: 31220955 PMCID: PMC6642005 DOI: 10.1080/17425247.2019.1635116] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Accepted: 06/19/2019] [Indexed: 01/23/2023]
Abstract
INTRODUCTION Silk is a promising biomaterial for controlled delivery of therapeutics and has a unique protein chemistry that can be tuned to form different carrier formats. The protein has been studied for sustained release depot systems for the targeted or localized delivery of drugs. AREAS COVERED An overview of natural silk proteins for controlled delivery of therapeutics is provided, with a focus on the features of silk proteins that allow them to be useful tools for controlled delivery. Recent applications of natural silk proteins as controlled delivery systems are also summarized. EXPERT OPINION The versatility of silk proteins makes them desirable biomaterials for a broad range of applications for controlled delivery of both small and large molecules. Further, the degradation profile leading to peptides and amino acids provides compatibility with pH-sensitive therapeutics. While silk sericin and spider silks are under study, silk fibroin extracted from silkworms (e.g. Bombyx mori) dominates pharmaceutical studies with silk. Silk fibroin can be formed into drug delivery tools for systemic or local injections, topical and transdermal applications, and implantation; depending on the target disease and therapeutic molecule. In vitro to in vivo correlations and scale-up needs are the next steps towards clinical applications.
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Affiliation(s)
- Burcin Yavuz
- Tufts University, Department of Biomedical Engineering, 4 Colby Street, Medford, MA 02155, USA
| | - Laura Chambre
- Tufts University, Department of Biomedical Engineering, 4 Colby Street, Medford, MA 02155, USA
| | - David L Kaplan
- Tufts University, Department of Biomedical Engineering, 4 Colby Street, Medford, MA 02155, USA
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15
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Swimberghe RCD, Coenye T, De Moor RJG, Meire MA. Biofilm model systems for root canal disinfection: a literature review. Int Endod J 2018; 52:604-628. [PMID: 30488449 DOI: 10.1111/iej.13050] [Citation(s) in RCA: 101] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Accepted: 11/20/2018] [Indexed: 12/13/2022]
Abstract
The aim of this review was to present an overview of laboratory root canal biofilm model systems described in the endodontic literature and to critically appraise the various factors that constitute these models. The electronic databases MEDLINE, Web of Science and EMBASE were searched up to and including December 2016 to identify laboratory studies using endodontic biofilm models. The following search terms were used in various combinations: biofilm, root canal, in vitro, endodontic, bacteria, root canal infection model, colony-forming unit. Only English papers from journals with an impact factor were selected. The records were screened by two reviewers, and full-text articles were assessed according to pre-defined criteria. The following data were extracted from the included studies: the microbial composition of the biofilm, the substrate, growth conditions, validation and quantification. Seventy-seven articles met the inclusion criteria. In the majority (86%) of the studies, a monospecies biofilm was cultured. In two studies, a dual-species biofilm was grown; others cultivated a multispecies biofilm, containing at least three species. Enterococcus faecalis was the most frequently used test species (in 79% of all studies, 92% of the monospecies studies). Four studies used an inoculum derived directly from the oral cavity. Human dentine was the most frequently used substratum (88% of the studies). Incubation times differed considerably, ranging from one to seventy days. The most common quantification method (in 87% of the studies) was bacterial culturing, followed by microscopy techniques. The variation in laboratory root canal biofilm model systems is notable. Because of substantial variation in experimental parameters, it is difficult to compare results between studies. This demonstrates the need for a more standardized approach and a validated endodontic biofilm model.
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Affiliation(s)
- R C D Swimberghe
- Department of Restorative Dentistry & Endodontology, Dental School, Ghent University, Gent, Belgium
| | - T Coenye
- Laboratory of Pharmaceutical Microbiology, Ghent University, Gent, Belgium
| | - R J G De Moor
- Department of Restorative Dentistry & Endodontology, Dental School, Ghent University, Gent, Belgium
| | - M A Meire
- Department of Restorative Dentistry & Endodontology, Dental School, Ghent University, Gent, Belgium
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16
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White LJ, Keane TJ, Smoulder A, Zhang L, Castleton AA, Reing JE, Turner NJ, Dearth CL, Badylak SF. The impact of sterilization upon extracellular matrix hydrogel structure and function. ACTA ACUST UNITED AC 2018. [DOI: 10.1016/j.regen.2018.04.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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17
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Larsson HM, Vythilingam G, Pinnagoda K, Vardar E, Engelhardt EM, Sothilingam S, Thambidorai RC, Kamarul T, Hubbell JA, Frey P. Fiber density of collagen grafts impacts rabbit urethral regeneration. Sci Rep 2018; 8:10057. [PMID: 29968749 PMCID: PMC6030124 DOI: 10.1038/s41598-018-27621-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Accepted: 06/01/2018] [Indexed: 11/26/2022] Open
Abstract
There is a need for efficient and “off-the-shelf” grafts in urethral reconstructive surgery. Currently available surgical techniques require harvesting of grafts from autologous sites, with increased risk of surgical complications and added patient discomfort. Therefore, a cost-effective and cell-free graft with adequate regenerative potential has a great chance to be translated into clinical practice. Tubular cell-free collagen grafts were prepared by varying the collagen density and fiber distribution, thereby creating a polarized low fiber density collagen graft (LD-graft). A uniform, high fiber density collagen graft (HD-graft) was engineered as a control. These two grafts were implanted to bridge a 2 cm long iatrogenic urethral defect in a rabbit model. Histology revealed that rabbits implanted with the LD-graft had a better smooth muscle regeneration compared to the HD-graft. The overall functional outcome assessed by contrast voiding cystourethrography showed patency of the urethra in 90% for the LD-graft and in 66.6% for the HD-graft. Functional regeneration of the rabbit implanted with the LD-graft could further be demonstrated by successful mating, resulting in healthy offspring. In conclusion, cell-free low-density polarized collagen grafts show better urethral regeneration than high-density collagen grafts.
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Affiliation(s)
- H M Larsson
- Institute of Bioengineering, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland.,Department of Pediatrics, Centre Hospitalier Universitaire Vaudois (CHUV), Lausanne, Switzerland
| | - G Vythilingam
- Institute of Bioengineering, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland.,Department of Surgery, University Malaya, Kuala Lumpur, Malaysia
| | - K Pinnagoda
- Institute of Bioengineering, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland.,Department of Pediatrics, Centre Hospitalier Universitaire Vaudois (CHUV), Lausanne, Switzerland
| | - E Vardar
- Institute of Bioengineering, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland.,Department of Pediatrics, Centre Hospitalier Universitaire Vaudois (CHUV), Lausanne, Switzerland
| | - E M Engelhardt
- Institute of Bioengineering, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - S Sothilingam
- Department of Surgery, University Malaya, Kuala Lumpur, Malaysia
| | - R C Thambidorai
- Department of Surgery, University Malaya, Kuala Lumpur, Malaysia
| | - T Kamarul
- Tissue Engineering Group, Department of Orthopaedic Surgery, (NOCERAL) University Malaya, Kuala Lumpur, Malaysia
| | - J A Hubbell
- Institute of Bioengineering, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland.,Institute for Molecular Engineering, University of Chicago, Chicago, IL, USA
| | - P Frey
- Institute of Bioengineering, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland.
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18
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Lecomte A, Descamps E, Bergaud C. A review on mechanical considerations for chronically-implanted neural probes. J Neural Eng 2018; 15:031001. [DOI: 10.1088/1741-2552/aa8b4f] [Citation(s) in RCA: 100] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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19
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Portier F, Teulon C, Nowacka-Perrin A, Guenneau F, Schanne-Klein MC, Mosser G. Stabilization of Collagen Fibrils by Gelatin Addition: A Study of Collagen/Gelatin Dense Phases. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:12916-12925. [PMID: 29087724 DOI: 10.1021/acs.langmuir.7b02142] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Collagen and its denatured form, gelatin, are biopolymers of fundamental interest in numerous fields ranging from living tissues to biomaterials, food, and cosmetics. This study aims at characterizing mixtures of those biopolymers at high concentrations (up to 100 mg·mL-1) at which collagen has mesogenic properties. We use a structural approach combining polarization-resolved multiphoton microscopy, polarized light microscopy, magnetic resonance imaging, and transmission electron microscopy to analyze gelatin and collagen/gelatin dense phases in their sol and gel states from the macroscopic to the microscopic scale. We first report the formation of a lyotropic crystal phase of gelatin A and show that gelatin must structure itself in particles to become mesogenic. We demonstrate that mixtures of collagen and gelatin phase segregate, preserving the setting of the pure collagen mesophase at a gelatin ratio of up to 20% and generating a biphasic fractal sample at all tested ratios. Moreover, differential scanning calorimetric analysis shows that each protein separates into two populations. Both populations of gelatins are stabilized by the presence of collagen, whereas only one population of collagen molecules is stabilized by the presence of gelatin, most probably those at the interface of the fibrillated microdomains and of the gelatin phase. Although further studies are needed to fully understand the involved mechanism, these new data should have a direct impact on the bioengineering of those two biopolymers.
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Affiliation(s)
- François Portier
- Sorbonne Universités, UPMC Université Paris 06, CNRS, Collège de France, LCMCP , F-75005 Paris, France
| | - Claire Teulon
- LOB, Ecole Polytechnique, CNRS, Inserm U1182, Université Paris-Saclay , F-91128 Palaiseau, France
| | - Agnieszka Nowacka-Perrin
- Sorbonne Universités, UPMC Université Paris 06, CNRS, Collège de France, LCMCP , F-75005 Paris, France
| | - Flavien Guenneau
- Sorbonne Universités, UPMC Université Paris 06, CNRS, Collège de France, LCMCP , F-75005 Paris, France
| | | | - Gervaise Mosser
- Sorbonne Universités, UPMC Université Paris 06, CNRS, Collège de France, LCMCP , F-75005 Paris, France
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20
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Kajii F, Iwai A, Tanaka H, Matsui K, Kawai T, Kamakura S. Influence of electron beam irradiation doses on bone regeneration by octacalcium phosphate collagen composites. J Tissue Eng Regen Med 2017. [DOI: 10.1002/term.2505] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Fumihiko Kajii
- Bone Regenerative Engineering Laboratory, Graduate School of Biomedical EngineeringTohoku University Sendai Japan
- Toyobo Co. Ltd, Research Institute Shiga Japan
| | | | | | - Keiko Matsui
- Division of Oral and Maxillofacial SurgeryTohoku University Graduate School of Dentistry Sendai Japan
| | - Tadashi Kawai
- Division of Oral and Maxillofacial SurgeryTohoku University Graduate School of Dentistry Sendai Japan
| | - Shinji Kamakura
- Bone Regenerative Engineering Laboratory, Graduate School of Biomedical EngineeringTohoku University Sendai Japan
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21
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Terminal sterilization of equine-derived decellularized tendons for clinical use. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 75:43-49. [DOI: 10.1016/j.msec.2017.02.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Revised: 02/02/2017] [Accepted: 02/05/2017] [Indexed: 11/21/2022]
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22
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Wiegand C, Buhren BA, Bünemann E, Schrumpf H, Homey B, Frykberg RG, Lurie F, Gerber PA. A novel native collagen dressing with advantageous properties to promote physiological wound healing. J Wound Care 2017; 25:713-720. [PMID: 27974008 DOI: 10.12968/jowc.2016.25.12.713] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
OBJECTIVE Chronic hard-to-heal wounds generate high costs and resource use in western health systems and are the focus of intense efforts to improve healing outcomes. Here, we introduce a novel native collagen (90 %):alginate (10 %) wound dressing and compare it with the established oxidised dressings Method: Matrices were analysed by atomic force microscopy (AMF), scanning electron microscopy (SEM), and immunoelectron microscopy for collagen types I, III and V. Viability assays were performed with NIH-3T3 fibroblasts. Matrix metalloproteinase (MMP) binding was analysed, and the effect of the wound dressings on platelet-derived growth factor B homodimer (PDGF-BB) was investigated. RESULTS Unlike oxidised regenerated cellulose (ORC)/collagen matrix and ovine forestomach matrix (OFM), the three-dimensional structure of the native collagen matrix (NCM) was found to be analogous to intact, native, dermal collagen. Fibroblasts seeded on the NCM showed exponential growth whereas in ORC/collagen matrix or OFM, very low rates of proliferation were observed after 7 days. MMP sequestration was effective and significant in the NCM. In addition, the NCM was able to significantly stabilise PDGF-BB in vitro. CONCLUSION We hypothesise that the observed microstructure of the NCM allows for an effective binding of MMPs and a stabilisation and protection of growth factors and also promotes the ingrowth of dermal fibroblasts, potentially supporting the re commencement of healing in previously recalcitrant wounds. DECLARATION OF INTEREST This work was supported by BSN Medical, Hamburg, Germany.
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Affiliation(s)
- C Wiegand
- Department of Dermatology, University Medical Centre Jena, Jena, Germany
| | - B A Buhren
- Department of Dermatology, University Hospital Düsseldorf, Düsseldorf, Germany
| | - E Bünemann
- Department of Dermatology, University Hospital Düsseldorf, Düsseldorf, Germany
| | - H Schrumpf
- Department of Dermatology, University Hospital Düsseldorf, Düsseldorf, Germany
| | - B Homey
- Department of Dermatology, University Hospital Düsseldorf, Düsseldorf, Germany
| | - R G Frykberg
- Department of Dermatology, University Hospital Düsseldorf, Düsseldorf, Germany
| | - F Lurie
- Jobst Vascular Institute, Toledo, OH US
| | - P A Gerber
- Department of Dermatology, University Hospital Düsseldorf, Düsseldorf, Germany
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23
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Monaco G, Cholas R, Salvatore L, Madaghiele M, Sannino A. Sterilization of collagen scaffolds designed for peripheral nerve regeneration: Effect on microstructure, degradation and cellular colonization. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 71:335-344. [PMID: 27987715 DOI: 10.1016/j.msec.2016.10.030] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Revised: 09/21/2016] [Accepted: 10/16/2016] [Indexed: 02/01/2023]
Abstract
In this study we investigated the impact of three different sterilization methods, dry heat (DHS), ethylene oxide (EtO) and electron beam radiation (β), on the properties of cylindrical collagen scaffolds with longitudinally oriented pore channels, specifically designed for peripheral nerve regeneration. Scanning electron microscopy, mechanical testing, quantification of primary amines, differential scanning calorimetry and enzymatic degradation were performed to analyze possible structural and chemical changes induced by the sterilization. Moreover, in vitro proliferation and infiltration of the rat Schwann cell line RSC96 within the scaffolds was evaluated, up to 10days of culture. No major differences in morphology and compressive stiffness were observed among scaffolds sterilized by the different methods, as all samples showed approximately the same structure and stiffness as the unsterilized control. Proliferation, infiltration, distribution and morphology of RSC96 cells within the scaffolds were also comparable throughout the duration of the cell culture study, regardless of the sterilization treatment. However, we found a slight increase of chemical crosslinking upon sterilization (EtO<DHS<β), together with an enhanced resistance to denaturation of the EtO treated scaffolds and a significantly accelerated enzymatic degradation of the β sterilized scaffolds. The results demonstrated that β irradiation impaired the scaffold properties to a greater extent, whereas EtO exposure appeared as the most suitable method for the sterilization of the proposed scaffolds.
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Affiliation(s)
- Graziana Monaco
- Department of Engineering for Innovation, University of Salento, Via per Monteroni, 73100 Lecce, Italy; Dhitech Scarl - Distretto Tecnologico High Tech, Via per Monteroni, 73100 Lecce, Italy
| | - Rahmatullah Cholas
- Department of Engineering for Innovation, University of Salento, Via per Monteroni, 73100 Lecce, Italy
| | - Luca Salvatore
- Department of Engineering for Innovation, University of Salento, Via per Monteroni, 73100 Lecce, Italy
| | - Marta Madaghiele
- Department of Engineering for Innovation, University of Salento, Via per Monteroni, 73100 Lecce, Italy.
| | - Alessandro Sannino
- Department of Engineering for Innovation, University of Salento, Via per Monteroni, 73100 Lecce, Italy
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24
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Mazor E, Zilberman M. Effect of gamma-irradiation sterilization on the physical and mechanical properties of a hybrid wound dressing. POLYM ADVAN TECHNOL 2016. [DOI: 10.1002/pat.3854] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Eytan Mazor
- Department of Materials Science and Engineering; Tel-Aviv University; Tel-Aviv 69978 Israel
| | - Meital Zilberman
- Department of Materials Science and Engineering; Tel-Aviv University; Tel-Aviv 69978 Israel
- Department of Biomedical Engineering; Tel-Aviv University; Tel-Aviv 69978 Israel
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25
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Gould LJ. Topical Collagen-Based Biomaterials for Chronic Wounds: Rationale and Clinical Application. Adv Wound Care (New Rochelle) 2016; 5:19-31. [PMID: 26858912 DOI: 10.1089/wound.2014.0595] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Significance: The extracellular matrix (ECM) is known to be deficient in chronic wounds. Collagen is the major protein in the ECM. Many claims are made while extolling the virtues of collagen-based biomaterials in promoting cell growth and modulating matrix metalloproteinases. This review will explore the rationale for using topical collagen or ECM as an interface for healing. Recent Advances: Rapid improvements in electrospinning and nanotechnology have resulted in the creation of third-generation biomaterials that mimic the native ECM, stimulate cellular and genetic responses in the target tissue, and provide a platform for controlled release of bioactive molecules and live cells. Although the major focus is currently on development of artificial tissues and organ regeneration, better understanding of the mechanisms that stimulate wound healing can be applied to specific deficits in the chronic wound. Critical Issues: When choosing between the various advanced wound-care products and dressings, the clinician is challenged to select the most appropriate material at the right time. Understanding how the ECM components promote tissue regeneration and modulate the wound microenvironment will facilitate those choices. Laboratory discoveries of biomolecular and cellular strategies that promote skin regeneration rather than repair should be demonstrated to translate to deficits in the chronic wound. Future Directions: Cost-effective production of materials that utilize non-mammalian sources of collagen or ECM components combined with synthetic scaffolding will provide an optimal structure for cellular ingrowth and modulation of the chronic wound microenvironment to facilitate healing. These bioengineered materials will be customizable to provide time-released delivery of bioactive molecules or drugs based on the degradation rate of the scaffold or specific signals from the wound.
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Affiliation(s)
- Lisa J. Gould
- Wound Recovery and Hyperbaric Medicine Center, Kent Hospital, Warwick, Rhode Island
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Proffen BL, Perrone GS, Fleming BC, Sieker JT, Kramer J, Hawes ML, Badger GJ, Murray MM. Electron beam sterilization does not have a detrimental effect on the ability of extracellular matrix scaffolds to support in vivo ligament healing. J Orthop Res 2015; 33:1015-23. [PMID: 25676876 PMCID: PMC4517185 DOI: 10.1002/jor.22855] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2014] [Accepted: 01/31/2015] [Indexed: 02/04/2023]
Abstract
Extracellular matrix (ECM) scaffolds have been used to enhance anterior cruciate ligament (ACL) repair in large animal models. To translate this technology to clinical care, identifying a method which effectively sterilizes the material without significantly impairing in vivo function is desirable. Sixteen Yorkshire pigs underwent ACL transection and were randomly assigned to bridge-enhanced ACL repair-primary suture repair of the ACL with addition of autologous blood soaked ECM scaffold--with either (i) an aseptically processed ECM scaffold, or (ii) an electron beam irradiated ECM scaffold. Primary outcome measures included sterility of the scaffold and biomechanical properties of the scaffold itself and the repaired ligament at 8 weeks after surgery. Scaffolds treated with 15 kGy electron beam irradiation had no bacterial or fungal growth noted, while aseptically processed scaffolds had bacterial growth in all tested samples. The mean biomechanical properties of the scaffold and healing ligament were lower in the electron beam group; however, differences were not statistically significant. Electron beam irradiation was able to effectively sterilize the scaffolds. In addition, this technique had only a minimal impact on the in vivo function of the scaffolds when used for ligament healing in the porcine model.
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Affiliation(s)
- Benedikt L. Proffen
- Department of Orthopaedic Surgery, Sports Medicine Research Laboratory, Children's Hospital Boston/Harvard Medical School, Boston, Massachusetts
| | - Gabriel S. Perrone
- Department of Orthopaedic Surgery, Sports Medicine Research Laboratory, Children's Hospital Boston/Harvard Medical School, Boston, Massachusetts
| | - Braden C. Fleming
- Department of Orthopaedics, Bioengineering Labs, Warren Alpert Medical School of Brown University/Rhode Island Hospital, Providence, Rhode Island
| | - Jakob T. Sieker
- Department of Orthopaedic Surgery, Sports Medicine Research Laboratory, Children's Hospital Boston/Harvard Medical School, Boston, Massachusetts
| | | | | | - Gary J. Badger
- Department of Medical Biostatistics, University of Vermont, Burlington, Vermont
| | - Martha M. Murray
- Department of Orthopaedic Surgery, Sports Medicine Research Laboratory, Children's Hospital Boston/Harvard Medical School, Boston, Massachusetts
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Rnjak-Kovacina J, DesRochers TM, Burke KA, Kaplan DL. The effect of sterilization on silk fibroin biomaterial properties. Macromol Biosci 2015; 15:861-74. [PMID: 25761231 PMCID: PMC4456215 DOI: 10.1002/mabi.201500013] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2015] [Revised: 02/21/2015] [Indexed: 12/20/2022]
Abstract
The effects of common sterilization techniques on the physical and biological properties of lyophilized silk fibroin sponges are described. Sterile silk fibroin sponges were cast using a pre-sterilized silk fibroin solution under aseptic conditions or post-sterilized via autoclaving, γ radiation, dry heat, exposure to ethylene oxide, or hydrogen peroxide gas plasma. Low average molecular weight and low concentration silk fibroin solutions could be sterilized via autoclaving or filtration without significant loses of protein. However, autoclaving reduced the molecular weight distribution of the silk fibroin protein solution, and silk fibroin sponges cast from autoclaved silk fibroin were significantly stiffer compared to sponges cast from unsterilized or filtered silk fibroin. When silk fibroin sponges were sterilized post-casting, autoclaving increased scaffold stiffness, while decreasing scaffold degradation rate in vitro. In contrast, γ irradiation accelerated scaffold degradation rate. Exposure to ethylene oxide significantly decreased cell proliferation rate on silk fibroin sponges, which was rescued by leaching ethylene oxide into PBS prior to cell seeding.
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Affiliation(s)
- Jelena Rnjak-Kovacina
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts, USA
- Graduate School of Biomedical Engineering, UNSW Australia, Sydney, New South Wales, Australia
| | - Teresa M DesRochers
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts, USA
- KIYATEC, Inc., Greenville, South Carolina, USA
| | - Kelly A Burke
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts, USA
- Department of Chemical and Biomolecular Engineering, University of Connecticut, Storrs, Connecticut, USA
| | - David L Kaplan
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts, USA.
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Amadori S, Torricelli P, Rubini K, Fini M, Panzavolta S, Bigi A. Effect of sterilization and crosslinking on gelatin films. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2015; 26:69. [PMID: 25631265 DOI: 10.1007/s10856-015-5396-4] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2014] [Accepted: 09/29/2014] [Indexed: 06/04/2023]
Abstract
Sterilization through γ-irradiation has been reported to affect collagen mechanical properties, but its possible effects on gelatin based materials have not been investigated up to now. Herein we report the results of a mechanical, chemical and thermal study performed on gelatin films before and after γ-irradiation. The investigation was performed on uncrosslinked films as well as on crosslinked films. To this aim, two common crosslinking agents, glutaraldehyde and genipin, at different concentration (0.15, 0.30 and 0.67%) were used. The results indicate that sterilization significantly affects the mechanical properties of uncrosslinked films, whereas it displays a modest effect on gelatin swelling, release in solution, thermal stability and molecular structure. Both glutaraldehyde and genipin enhance the mechanical properties and stability in solution of the gelatin films. In particular, the values of Young modulus increase as a function of crosslinker concentration up to about 10 and 18 MPa for genipin and glutaraldehyde treated samples respectively. The results of in vitro study demonstrate that the films crosslinked with genipin do not display any cytotoxic reaction, whereas glutaraldehyde crosslinking provokes an acute and dose dependent cytotoxic effect.
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Affiliation(s)
- Sofia Amadori
- Department of Chemistry "G. Ciamician", University of Bologna, Bologna, Italy
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Brazdaru L, Micutz M, Staicu T, Albu M, Sulea D, Leca M. Structural and rheological properties of collagen hydrogels containing tannic acid and chlorhexidine digluconate intended for topical applications. CR CHIM 2015. [DOI: 10.1016/j.crci.2014.07.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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31
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The effect of steam sterilization on recombinant spider silk particles. Int J Pharm 2015; 481:125-31. [PMID: 25596418 DOI: 10.1016/j.ijpharm.2015.01.024] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2014] [Revised: 01/12/2015] [Accepted: 01/13/2015] [Indexed: 11/20/2022]
Abstract
In this work, the recombinant spider silk protein eADF4(C16) was used to fabricate particles in the submicron range using a micromixing method. Furthermore, particles in the micrometer range were produced using an ultrasonic atomizer system. Both particle species were manufactured by an all-aqueous process. The submicroparticles were 332 nm in average diameter, whereas 6.70 μm was the median size of the microparticles. Both particle groups showed a spherical shape and exhibited high β-sheet content in secondary structure. Submicro- and microparticles were subsequently steam sterilized and investigated with respect to particle size, secondary structure and thermal stability. Sterilization temperature and time were increased to assess the thermal stability of eADF4(C16) particles. Actually, particles remained stable and their properties did not change even after autoclaving at 134°C. Both, the untreated and the autoclaved submicroparticles showed no overt cytotoxicity on human dermal fibroblasts after incubation for 72 h. The eADF4(C16) particles were already loaded with proteins and small molecules in previous studies. With that, we can provide a highly promising parenteral drug delivery system based on a defined polypeptide carrier, manufactured with an all-aqueous process and being fully sterilizable.
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Yucel T, Lovett ML, Kaplan DL. Silk-based biomaterials for sustained drug delivery. J Control Release 2014; 190:381-97. [PMID: 24910193 PMCID: PMC4142080 DOI: 10.1016/j.jconrel.2014.05.059] [Citation(s) in RCA: 212] [Impact Index Per Article: 21.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Revised: 05/24/2014] [Accepted: 05/28/2014] [Indexed: 10/25/2022]
Abstract
Silk presents a rare combination of desirable properties for sustained drug delivery, including aqueous-based purification and processing options without chemical cross-linkers, compatibility with common sterilization methods, controllable and surface-mediated biodegradation into non-inflammatory by-products, biocompatibility, utility in drug stabilization, and robust mechanical properties. A versatile silk-based toolkit is currently available for sustained drug delivery formulations of small molecule through macromolecular drugs, with a promise to mitigate several drawbacks associated with other degradable sustained delivery technologies in the market. Silk-based formulations utilize silk's well-defined nano- through microscale structural hierarchy, stimuli-responsive self-assembly pathways and crystal polymorphism, as well as sequence and genetic modification options towards targeted pharmaceutical outcomes. Furthermore, by manipulating the interactions between silk and drug molecules, near-zero order sustained release may be achieved through diffusion- and degradation-based release mechanisms. Because of these desirable properties, there has been increasing industrial interest in silk-based drug delivery systems currently at various stages of the developmental pipeline from pre-clinical to FDA-approved products. Here, we discuss the unique aspects of silk technology as a sustained drug delivery platform and highlight the current state of the art in silk-based drug delivery. We also offer a potential early development pathway for silk-based sustained delivery products.
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Affiliation(s)
- Tuna Yucel
- Tufts University, Department of Biomedical Engineering, Medford, MA 02155, USA; Ekteino Laboratories, New York, NY 10022, USA
| | - Michael L Lovett
- Tufts University, Department of Biomedical Engineering, Medford, MA 02155, USA; Ekteino Laboratories, New York, NY 10022, USA
| | - David L Kaplan
- Tufts University, Department of Biomedical Engineering, Medford, MA 02155, USA
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Türker NS, Özer AY, Kutlu B, Nohutcu R, Sungur A, Bilgili H, Ekizoglu M, Özalp M. The effect of gamma radiation sterilization on dental biomaterials. Tissue Eng Regen Med 2014. [DOI: 10.1007/s13770-014-0016-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Mechanostructure and composition of highly reproducible decellularized liver matrices. Acta Biomater 2014; 10:875-82. [PMID: 24184179 DOI: 10.1016/j.actbio.2013.10.023] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2013] [Revised: 09/17/2013] [Accepted: 10/22/2013] [Indexed: 01/14/2023]
Abstract
Despite the increasing number of papers on decellularized scaffolds, there is little consensus on the optimum method of decellularizing biological tissue such that the micro-architecture and protein content of the matrix are conserved as far as possible. Focusing on the liver, the aim of this study was therefore to develop a method for the production of well-characterized and reproducible matrices that best preserves the structure and composition of the native extra cellular matrix (ECM). Given the importance of matrix stiffness in regulating cell response, the mechanical properties of the decellularized tissue were also considered. The testing and analysis framework is based on the characterization of decellularized and untreated samples in the same reproducible initial state (i.e., the equilibrium swollen state). Decellularized ECM (dECM) were characterized using biochemical, histological, mechanical and structural analyses to identify the best procedure to ensure complete cell removal while preserving most of the native ECM structure and composition. Using this method, sterile decellularized porcine ECM with highly conserved intra-lobular micro-structure and protein content were obtained in a consistent and reproducible manner using the equilibrium swollen state of tissue or matrix as a reference. A significant reduction in the compressive elastic modulus was observed for liver dECM with respect to native tissue, suggesting a re-examination of design parameters for ECM-mimicking scaffolds for engineering tissues in vitro.
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Effect of sterilization on structural and material properties of 3-D silk fibroin scaffolds. Acta Biomater 2014; 10:308-17. [PMID: 24013025 DOI: 10.1016/j.actbio.2013.08.035] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2013] [Revised: 08/15/2013] [Accepted: 08/26/2013] [Indexed: 01/20/2023]
Abstract
The development of porous scaffolds for tissue engineering applications requires the careful choice of properties, as these influence cell adhesion, proliferation and differentiation. Sterilization of scaffolds is a prerequisite for in vitro culture as well as for subsequent in vivo implantation. The variety of methods used to provide sterility is as diverse as the possible effects they can have on the structural and material properties of the three-dimensional (3-D) porous structure, especially in polymeric or proteinous scaffold materials. Silk fibroin (SF) has previously been demonstrated to offer exceptional benefits over conventional synthetic and natural biomaterials in generating scaffolds for tissue replacements. This study sought to determine the effect of sterilization methods, such as autoclaving, heat-, ethylene oxide-, ethanol- or antibiotic-antimycotic treatment, on porous 3-D SF scaffolds. In terms of scaffold morphology, topography, crystallinity and short-term cell viability, the different sterilization methods showed only few effects. Nevertheless, mechanical properties were significantly decreased by a factor of two by all methods except for dry autoclaving, which seemed not to affect mechanical properties compared to the native control group. These data suggest that SF scaffolds are in general highly resistant to various sterilization treatments. Nevertheless, care should be taken if initial mechanical properties are of interest.
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Cantu DA, Kao WJ. Combinatorial biomatrix/cell-based therapies for restoration of host tissue architecture and function. Adv Healthc Mater 2013; 2:1544-63. [PMID: 23828863 PMCID: PMC3896550 DOI: 10.1002/adhm.201300063] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2013] [Revised: 03/08/2013] [Indexed: 12/13/2022]
Abstract
This Progress Report reviews recent advances in the utility of extracellular matrix (ECM)-mimic biomaterials in presenting and delivering therapeutic cells to promote tissue healing. This overview gives a brief introduction of different cell types being used in regenerative medicine and tissue engineering while addressing critical issues that must be overcome before cell-based approaches can be routinely employed in the clinic. A selection of five commonly used cell-associated, biomaterial platforms (collagen, hyaluronic acid, fibrin, alginate, and poly(ethylene glycol)) are reviewed for treatment of a number of acute injury or diseases with emphasis on animal models and clinical trials. This article concludes with current challenges and future perspectives regarding foreign body host response to biomaterials and immunological reactions to allogeneic or xenogeneic cells, vascularization and angiogenesis, matching mechanical strength and anisotropy of native tissues, as well as other non-technical issues regarding the clinical translation of biomatrix/cell-based therapies.
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Affiliation(s)
- David Antonio Cantu
- School of Pharmacy, Division of Pharmaceutical Sciences University of Wisconsin-Madison, 777 Highland Avenue, Madison, WI 53705, USA
- Department of Biomedical Engineering, College of Engineering, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - W. John Kao
- School of Pharmacy, Division of Pharmaceutical Sciences University of Wisconsin-Madison, 777 Highland Avenue, Madison, WI 53705, USA
- Department of Biomedical Engineering, College of Engineering, University of Wisconsin-Madison, Madison, WI 53705, USA
- Department of Surgery, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI 53705, USA
- Univeristy of Wisconsin Carbone Cancer Center, University of Wisconsin-Madison, Madison, WI 53705, USA
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Wiegand C, Hipler UC. A superabsorbent polymer-containing wound dressing efficiently sequesters MMPs and inhibits collagenase activity in vitro. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2013; 24:2473-2478. [PMID: 23797827 PMCID: PMC3779591 DOI: 10.1007/s10856-013-4990-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/06/2013] [Accepted: 06/14/2013] [Indexed: 06/02/2023]
Abstract
Superabsorbent polymer (SAP)-containing wound dressings present a valuable and unique category of wound management products. An in vitro approach was used to assess the effects of a new SAP dressing in treatment of non-healing wounds. It was shown that the SAP dressing possesses a significant binding capacity for MMP-2 and MMP-9 in vitro (P\0.001). The inclusion of the bound proteases was so strong that no MMP-2 and only marginal amounts of MMP-9 were released from the dressing samples in a subsequent elution step. In addition, the SAP dressing was able to take up collagenase and reduce its activity in vitro. However, collagenase was not completely inactivated upon binding and enzyme-mediated substrate turnover could be observed at the dressings. In conclusion, in vitro data confirm the positive effect of the SAP wound dressing observed in vivo. The findings suggest that it should be specifically useful for highly exuding wounds with an elevated proteolytic activity that needs to be reduced to support healing.
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Affiliation(s)
- Cornelia Wiegand
- Department of Dermatology, University Medical Center Jena, Erfurter Str. 34, 07740 Jena, Germany
| | - Uta-Christina Hipler
- Department of Dermatology, University Medical Center Jena, Erfurter Str. 34, 07740 Jena, Germany
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Munarin F, Bozzini S, Visai L, Tanzi MC, Petrini P. Sterilization treatments on polysaccharides: Effects and side effects on pectin. Food Hydrocoll 2013. [DOI: 10.1016/j.foodhyd.2012.09.017] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Piatkowski A, Ulrich D, Seidel D, Abel M, Pallua N, Andriessen A. Randomised, controlled pilot to compare collagen and foam in stagnating pressure ulcers. J Wound Care 2012; 21:505-11. [DOI: 10.12968/jowc.2012.21.10.505] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- A. Piatkowski
- Department of Plastic Surgery and Hand Surgery, Burn Unit, RWTH University Hospital Aachen, Germany
| | - D. Ulrich
- Department of Plastic Surgery, UMC St Radboud, Nijmegen, the Netherlands
| | - D. Seidel
- Department of Plastic Surgery and Hand Surgery, Burn Unit, RWTH University Hospital Aachen, Germany
| | - M. Abel
- Lohmann & Rauscher GmbH & Co KG, Rengsdorf, Germany
| | - N. Pallua
- Department of Plastic Surgery and Hand Surgery, Burn Unit, RWTH University Hospital Aachen, Germany
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40
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Bulletin board. J Wound Care 2012. [DOI: 10.12968/jowc.2012.21.10.511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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41
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McBane JE, Battiston KG, Wadhwani A, Sharifpoor S, Labow RS, Santerre JP. The effect of degradable polymer surfaces on co-cultures of monocytes and smooth muscle cells. Biomaterials 2011; 32:3584-95. [DOI: 10.1016/j.biomaterials.2011.01.069] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2010] [Accepted: 01/26/2011] [Indexed: 12/13/2022]
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42
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Wiegand C, Hipler UC. Polymer-based Biomaterials as Dressings for Chronic Stagnating Wounds. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/masy.200900028] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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43
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Parenteau-Bareil R, Gauvin R, Berthod F. Collagen-Based Biomaterials for Tissue Engineering Applications. MATERIALS 2010. [PMCID: PMC5445871 DOI: 10.3390/ma3031863] [Citation(s) in RCA: 661] [Impact Index Per Article: 47.2] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Rémi Parenteau-Bareil
- Laboratoire d’Organogénèse Expérimentale (LOEX), Centre de recherche FRSQ du CHA universitaire de Québec, Hôpital du Saint-Sacrement, Québec, QC, G1S 4L8 Canada; E-Mails: (R.P.B.); (R.G.)
- Département de chirurgie, Faculté de médecine, Université Laval, Québec, QC, G1V 0A6 Canada
| | - Robert Gauvin
- Laboratoire d’Organogénèse Expérimentale (LOEX), Centre de recherche FRSQ du CHA universitaire de Québec, Hôpital du Saint-Sacrement, Québec, QC, G1S 4L8 Canada; E-Mails: (R.P.B.); (R.G.)
- Département de chirurgie, Faculté de médecine, Université Laval, Québec, QC, G1V 0A6 Canada
| | - François Berthod
- Laboratoire d’Organogénèse Expérimentale (LOEX), Centre de recherche FRSQ du CHA universitaire de Québec, Hôpital du Saint-Sacrement, Québec, QC, G1S 4L8 Canada; E-Mails: (R.P.B.); (R.G.)
- Département de chirurgie, Faculté de médecine, Université Laval, Québec, QC, G1V 0A6 Canada
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +1-418-682-7565; Fax: +1-418-682-8000
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Protease and pro-inflammatory cytokine concentrations are elevated in chronic compared to acute wounds and can be modulated by collagen type I in vitro. Arch Dermatol Res 2009; 302:419-28. [DOI: 10.1007/s00403-009-1011-1] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2009] [Revised: 11/25/2009] [Accepted: 12/01/2009] [Indexed: 10/20/2022]
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