201
|
|
202
|
Smooth Muscle Cell Alignment and Phenotype Control by Melt Spun Polycaprolactone Fibers for Seeding of Tissue Engineered Blood Vessels. Int J Biomater 2015; 2015:434876. [PMID: 26413093 PMCID: PMC4568037 DOI: 10.1155/2015/434876] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2015] [Revised: 08/04/2015] [Accepted: 08/11/2015] [Indexed: 11/24/2022] Open
Abstract
A method has been developed to induce and retain a contractile phenotype for vascular smooth muscle cells, as the first step towards the development of a biomimetic blood vessel construct with minimal compliance mismatch. Melt spun PCL fibers were deposited on a mandrel to form aligned fibers of 10 μm in diameter. The fibers were bonded into aligned arrangement through dip coating in chitosan solution. This formed a surface of parallel grooves, 10 μm deep by 10 μm across, presenting a surface layer of chitosan to promote cell surface interactions. The aligned fiber surface was used to culture cells present in the vascular wall, in particular fibroblasts and smooth muscle cells. This topography induced “surface guidance” over the orientation of the cells, which adopted an elongated spindle-like morphology, whereas cells on the unpatterned control surface did not show such orientation, assuming more rhomboid shapes. The preservation of VSMC contractile phenotype on the aligned scaffold was demonstrated by the retention of α-SMA expression after several days of culture. The effect was assessed on a prototype vascular graft prosthesis fabricated from polylactide caprolactone; VSMCs aligned longitudinally along a fiberless tube, whereas, for the aligned fiber coated tubes, the VSMCs aligned in the required circumferential orientation.
Collapse
|
203
|
Foster LJR, Ho S, Hook J, Basuki M, Marçal H. Chitosan as a Biomaterial: Influence of Degree of Deacetylation on Its Physiochemical, Material and Biological Properties. PLoS One 2015; 10:e0135153. [PMID: 26305690 PMCID: PMC4549144 DOI: 10.1371/journal.pone.0135153] [Citation(s) in RCA: 89] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Accepted: 07/18/2015] [Indexed: 11/30/2022] Open
Abstract
Chitosan is a biomaterial with a range of current and potential biomedical applications. Manipulation of chitosan degree of deacetylation (DDA) to achieve specific properties appears feasible, but studies investigating its influence on properties are often contradictory. With a view to the potential of chitosan in the regeneration of nerve tissue, the influence of DDA on the growth and health of olfactory ensheathing cells (OECs) was investigated. There was a linear increase in OEC proliferation as the DDA increased from 72 to 85%. This correlated with linear increases in average surface roughness (0.62 to 0.78 μm) and crystallinity (4.3 to 10.1%) of the chitosan films. Mitochondrial activity and membrane integrity of OECs was significantly different for OECs cultivated on chitosan with DDAs below 75%, while those on films with DDAs up to 85% were similar to cells in asynchronous growth. Apoptotic indices and cell cycle analysis also suggested that chitosan films with DDAs below 75% were cytocompatible but induced cellular stress, while OECs grown on films fabricated from chitosan with DDAs above 75% showed no significant differences compared to those in asynchronous growth. Tensile strength and elongation to break varied with DDA from 32.3 to 45.3 MPa and 3.6 to 7.1% respectively. DDA had no significant influence on abiotic and biotic degradation profiles of the chitosan films which showed approximately 8 and 20% weight loss respectively. Finally, perceived patterns in property changes are subject to change based on potential variations in DDA analysis. NMR examination of the chitosan samples here revealed significant differences depending upon which peaks were selected for integration; 6 to 13% in DDA values within individual samples. Furthermore, differences between DDA values determined here and those reported by the commercial suppliers were significant and this may also be a source of concern when selecting commercial chitosans for biomaterial research.
Collapse
Affiliation(s)
- Leslie John Ray Foster
- Bio/Polymer Research Group, School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, Australia
| | - Sonia Ho
- Bio/Polymer Research Group, School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, Australia
| | - James Hook
- NMR Facility, Mark Wainwright Analytical Centre, University of New South Wales, Sydney, Australia
| | - Monica Basuki
- Bio/Polymer Research Group, School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, Australia
| | - Helder Marçal
- Bio/Polymer Research Group, School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, Australia
| |
Collapse
|
204
|
Zou P, Li K, Liu S, Xing R, Qin Y, Yu H, Zhou M, Li P. Effect of chitooligosaccharides with different degrees of acetylation on wheat seedlings under salt stress. Carbohydr Polym 2015; 126:62-9. [DOI: 10.1016/j.carbpol.2015.03.028] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2014] [Revised: 02/11/2015] [Accepted: 03/14/2015] [Indexed: 11/30/2022]
|
205
|
Das D, Ghosh P, Ghosh A, Haldar C, Dhara S, Panda AB, Pal S. Stimulus-Responsive, Biodegradable, Biocompatible, Covalently Cross-Linked Hydrogel Based on Dextrin and Poly(N-isopropylacrylamide) for in Vitro/in Vivo Controlled Drug Release. ACS APPLIED MATERIALS & INTERFACES 2015; 7:14338-51. [PMID: 26069986 DOI: 10.1021/acsami.5b02975] [Citation(s) in RCA: 87] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
A novel stimulus-sensitive covalently cross-linked hydrogel derived from dextrin, N-isopropylacrylamide, and N,N'-methylene bis(acrylamide) (c-Dxt/pNIPAm), has been synthesized via Michael type addition reaction for controlled drug release application. The chemical structure of c-Dxt/pNIPAm has been confirmed through Fourier transform infrared (FTIR) spectroscopy and (1)H and (13)C NMR spectral analyses. The surface morphology of the hydrogel has been studied by field emission scanning electron microscopic (FE-SEM) and environmental scanning electron microscopic (E-SEM) analyses. The stimulus responsiveness of the hydrogel was studied through equilibrium swelling in various pH media at 25 and 37 °C. Rheological study was performed to measure the gel strength and gelation time. Noncytotoxicity of c-Dxt/pNIPAm hydrogel has been studied using human mesenchymal stem cells (hMSCs). The biodegradability of c-Dxt/pNIPAm was confirmed using hen egg lysozyme. The in vitro and in vivo release studies of ornidazole and ciprofloxacin imply that c-Dxt/pNIPAm delivers both drugs in a controlled way and would be an excellent alternative for a dual drug carrier. The FTIR, powder X-ray diffraction (XRD), and UV-vis-near infrared (NIR) spectra along with the computational study predict that the drugs remain in the matrix through physical interaction. A stability study signifies that the drugs (ornidazole ∼97% and ciprofloxacin ∼98%) are stable in the tablet formulations for up to 3 months.
Collapse
Affiliation(s)
- Dipankar Das
- †Polymer Chemistry Laboratory, Department of Applied Chemistry, Indian School of Mines, Dhanbad 826004, India
| | | | - Animesh Ghosh
- §Departmental of Pharmaceutical Sciences, Birla Institutes of Technology, Mesra, Ranchi, Jharkhand 835215, India
| | - Chanchal Haldar
- †Polymer Chemistry Laboratory, Department of Applied Chemistry, Indian School of Mines, Dhanbad 826004, India
| | | | - Asit Baran Panda
- ∥Discipline of Inorganic Materials and Catalysis, Central Salt and Marine Chemicals Research Institute (CSIR), Bhavnagar, Gujarat 364002, India
| | - Sagar Pal
- †Polymer Chemistry Laboratory, Department of Applied Chemistry, Indian School of Mines, Dhanbad 826004, India
| |
Collapse
|
206
|
Voss K, Falke K, Bernsdorf A, Grabow N, Kastner C, Sternberg K, Minrath I, Eickner T, Wree A, Schmitz KP, Guthoff R, Witt M, Hovakimyan M. Development of a novel injectable drug delivery system for subconjunctival glaucoma treatment. J Control Release 2015; 214:1-11. [PMID: 26160303 DOI: 10.1016/j.jconrel.2015.06.035] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Revised: 06/26/2015] [Accepted: 06/27/2015] [Indexed: 12/11/2022]
Abstract
In this study we present the development of an injectable polymeric drug delivery system for subconjunctival treatment of primary open angle glaucoma. The system consists of hyaluronic acid sodium salt (HA), which is commonly used in ophthalmology in anterior segment surgery, and an isocyanate-functionalized 1,2-ethylene glycol bis(dilactic acid) (ELA-NCO). The polymer mixtures with different ratios of HA to ELA-NCO (1/1, 1/4, and 1/10 (v/v)) were investigated for biocompatibility, degradation behavior and applicability as a sustained release system. For the latter, the lipophilic latanoprost ester pro-drug (LA) was incorporated into the HA/ELA-NCO system. In vitro, a sustained LA release over a period of about 60days was achieved. In cell culture experiments, the HA/ELA-NCO (1/1, (v/v)) system was proven to be biocompatible for human and rabbit Tenon's fibroblasts. Examination of in vitro degradation behavior revealed a total mass loss of more than 60% during the observation period of 26weeks. In vivo, LA was continuously released for 152days into rabbit aqueous humor and serum. Histological investigations revealed a marked leuko-lymphocytic infiltration soon after subconjunctival injection. Thereafter, the initial tissue reaction declined concomitantly with a continuous degradation of the polymer, which was completed after 10months. Our study demonstrates the suitability of the polymer resulting from the reaction of HA with ELA-NCO as an injectable local drug delivery system for glaucoma therapy, combining biocompatibility and biodegradability with prolonged drug release.
Collapse
Affiliation(s)
- Karsten Voss
- Institute for Biomedical Engineering, Rostock University Medical Center, Friederich-Barnewitz-Strasse 4, D-18119 Rostock, Germany.
| | - Karen Falke
- Department of Ophthalmology, Rostock University Medical Center, Doberaner Strasse 140, D-18057 Rostock, Germany.
| | - Arne Bernsdorf
- Institute for Biomedical Engineering, Rostock University Medical Center, Friederich-Barnewitz-Strasse 4, D-18119 Rostock, Germany.
| | - Niels Grabow
- Institute for Biomedical Engineering, Rostock University Medical Center, Friederich-Barnewitz-Strasse 4, D-18119 Rostock, Germany.
| | - Christian Kastner
- Institute for Biomedical Engineering, Rostock University Medical Center, Friederich-Barnewitz-Strasse 4, D-18119 Rostock, Germany.
| | - Katrin Sternberg
- Institute for Biomedical Engineering, Rostock University Medical Center, Friederich-Barnewitz-Strasse 4, D-18119 Rostock, Germany.
| | - Ingo Minrath
- Institute for Biomedical Engineering, Rostock University Medical Center, Friederich-Barnewitz-Strasse 4, D-18119 Rostock, Germany.
| | - Thomas Eickner
- Institute for Biomedical Engineering, Rostock University Medical Center, Friederich-Barnewitz-Strasse 4, D-18119 Rostock, Germany
| | - Andreas Wree
- Department of Anatomy, Rostock University Medical Center, Gertrudenstrasse 9a, D-18057 Rostock, Germany.
| | - Klaus-Peter Schmitz
- Institute for Biomedical Engineering, Rostock University Medical Center, Friederich-Barnewitz-Strasse 4, D-18119 Rostock, Germany.
| | - Rudolf Guthoff
- Institute for Biomedical Engineering, Rostock University Medical Center, Friederich-Barnewitz-Strasse 4, D-18119 Rostock, Germany.
| | - Martin Witt
- Department of Anatomy, Rostock University Medical Center, Gertrudenstrasse 9a, D-18057 Rostock, Germany.
| | - Marina Hovakimyan
- Institute for Biomedical Engineering, Rostock University Medical Center, Friederich-Barnewitz-Strasse 4, D-18119 Rostock, Germany.
| |
Collapse
|
207
|
Mu Y, Wu F, Lu Y, Wei L, Yuan W. Progress of electrospun fibers as nerve conduits for neural tissue repair. Nanomedicine (Lond) 2015; 9:1869-83. [PMID: 25325242 DOI: 10.2217/nnm.14.70] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Nerve tissue regeneration approaches have gained much attention in recent years, and nerve conduits (NCs), which facilitate nerve tissue regeneration, have become an attractive alternative to nerve autologous graft. Several methods are proposed to fabricate NCs, including electrospinning, which is a widely used approach for NCs and other tissue scaffolds, and has advantages such as the ability to control the thickness, diameter and porosity of fibers, as well as its simple experimental set up. This article gives an overview of electrospun fibers for nerve conduits utilized in peripheral and central nerve regeneration. Natural and synthetic materials with different mechanical strength, degradation rates and biocompatibility are proposed. Several bioactive proteins that can help the process of nerve regeneration are introduced. Finally, some approaches to control the morphology of electrospun fibers and to deliver bioactive proteins are discussed in detail.
Collapse
Affiliation(s)
- Ying Mu
- School of Pharmacy, Shanghai JiaoTong University, Shanghai 200240, PR China
| | | | | | | | | |
Collapse
|
208
|
Dash M, Samal SK, Douglas TEL, Schaubroeck D, Leeuwenburgh SC, Van Der Voort P, Declercq HA, Dubruel P. Enzymatically biomineralized chitosan scaffolds for tissue-engineering applications. J Tissue Eng Regen Med 2015; 11:1500-1513. [DOI: 10.1002/term.2048] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2014] [Revised: 04/14/2015] [Accepted: 04/29/2015] [Indexed: 01/30/2023]
Affiliation(s)
- Mamoni Dash
- Polymer Chemistry and Biomaterials Research Group; Ghent University; Krijgslaan 281, S4-Bis B-9000 Ghent Belgium
| | - Sangram K. Samal
- Polymer Chemistry and Biomaterials Research Group; Ghent University; Krijgslaan 281, S4-Bis B-9000 Ghent Belgium
- Laboratory of General Biochemistry and Physical Pharmacy; Ghent University; Harelbekestraat 72 9000 Ghent Belgium
- Centre for Nano- and Biophotonics; Ghent University; Harelbekestraat 72 9000 Ghent Belgium
| | - Timothy E. L. Douglas
- Polymer Chemistry and Biomaterials Research Group; Ghent University; Krijgslaan 281, S4-Bis B-9000 Ghent Belgium
| | - David Schaubroeck
- Centre for Microsystems Technology (CMST); Imec and Ghent University; Technologiepark 914a 9052 Ghent Belgium
| | - Sander C. Leeuwenburgh
- Department of Biomaterials; Radboud University Medical Centre; PO Box 9101 6500 HB Nijmegen The Netherlands
| | - Pascal Van Der Voort
- Department of Inorganic Chemistry, COMOC; Ghent University; Krijgslaan 281 S3 9000 Ghent Belgium
| | - Heidi A. Declercq
- Department of Basic Medical Sciences, Tissue Engineering Group; Ghent University; De Pintelaan 185 (6B3) 9000 Ghent Belgium
| | - Peter Dubruel
- Polymer Chemistry and Biomaterials Research Group; Ghent University; Krijgslaan 281, S4-Bis B-9000 Ghent Belgium
| |
Collapse
|
209
|
Dhivya S, Saravanan S, Sastry TP, Selvamurugan N. Nanohydroxyapatite-reinforced chitosan composite hydrogel for bone tissue repair in vitro and in vivo. J Nanobiotechnology 2015; 13:40. [PMID: 26065678 PMCID: PMC4464993 DOI: 10.1186/s12951-015-0099-z] [Citation(s) in RCA: 145] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Accepted: 05/19/2015] [Indexed: 12/19/2022] Open
Abstract
Background Bone loss during trauma, surgeries, and tumor resection often results in critical-sized bone defects that need to be filled with substitutionary materials. Complications associated with conventional grafting techniques have led to the development of bioactive tissue-engineered bone scaffolds. The potential application of hydrogels as three-dimensional (3D) matrices in tissue engineering has gained attention in recent years because of the superior sensitivity, injectability, and minimal invasive properties of hydrogels. Improvements in the bioactivity and mechanical strength of hydrogels can be achieved with the addition of ceramics. Based on the features required for bone regeneration, an injectable thermosensitive hydrogel containing zinc-doped chitosan/nanohydroxyapatite/beta-glycerophosphate (Zn-CS/nHAp/β-GP) was prepared and characterized, and the effect of nHAp on the hydrogel was examined. Methods Hydrogels (Zn-CS/β-GP, Zn-CS/nHAp/β-GP) were prepared using the sol–gel method. Characterization was carried out by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDX), Fourier transform infrared spectroscopy (FTIR), and X-ray diffraction (XRD) as well as swelling, protein adsorption, and exogenous biomineralization studies. Expression of osteoblast marker genes was determined by real-time reverse transcriptase polymerase chain reaction (RT-PCR) and western blot analyses. In vivo bone formation was studied using a rat bone defect model system. Results The hydrogels exhibited sol–gel transition at 37°C. The presence of nHAp in the Zn-CS/nHAp/β-GP hydrogel enhanced swelling, protein adsorption, and exogenous biomineralization. The hydrogel was found to be non-toxic to mesenchymal stem cells. The addition of nHAp to the hydrogel also enhanced osteoblast differentiation under osteogenic conditions in vitro and accelerated bone formation in vivo as seen from the depositions of apatite and collagen. Conclusions The synthesized injectable hydrogel (Zn-CS/nHAp/β-GP) showed its potential toward bone formation at molecular and cellular levels in vitro and in vivo. The current findings demonstrate the importance of adding nHAp to the hydrogel, thereby accelerating potential clinical application toward bone regeneration.
Collapse
Affiliation(s)
- S Dhivya
- Department of Biotechnology, School of Bioengineering, SRM University, Kattankulathur, 603203, Tamil Nadu, India.
| | - S Saravanan
- Department of Biotechnology, School of Bioengineering, SRM University, Kattankulathur, 603203, Tamil Nadu, India.
| | - T P Sastry
- Bioproducts Laboratory, Central Leather Research Institute, Chennai, 600 020, Tamil Nadu, India.
| | - N Selvamurugan
- Department of Biotechnology, School of Bioengineering, SRM University, Kattankulathur, 603203, Tamil Nadu, India.
| |
Collapse
|
210
|
Tsintou M, Dalamagkas K, Seifalian AM. Advances in regenerative therapies for spinal cord injury: a biomaterials approach. Neural Regen Res 2015; 10:726-42. [PMID: 26109946 PMCID: PMC4468763 DOI: 10.4103/1673-5374.156966] [Citation(s) in RCA: 90] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/22/2015] [Indexed: 12/16/2022] Open
Abstract
Spinal cord injury results in the permanent loss of function, causing enormous personal, social and economic problems. Even though neural regeneration has been proven to be a natural mechanism, central nervous system repair mechanisms are ineffective due to the imbalance of the inhibitory and excitatory factors implicated in neuroregeneration. Therefore, there is growing research interest on discovering a novel therapeutic strategy for effective spinal cord injury repair. To this direction, cell-based delivery strategies, biomolecule delivery strategies as well as scaffold-based therapeutic strategies have been developed with a tendency to seek for the answer to a combinatorial approach of all the above. Here we review the recent advances on regenerative/neural engineering therapies for spinal cord injury, aiming at providing an insight to the most promising repair strategies, in order to facilitate future research conduction.
Collapse
Affiliation(s)
- Magdalini Tsintou
- UCL Centre for Nanotechnology & Regenerative Medicine, Division of Surgery and Interventional Science, University College of London, London, UK
| | - Kyriakos Dalamagkas
- UCL Centre for Nanotechnology & Regenerative Medicine, Division of Surgery and Interventional Science, University College of London, London, UK
| | - Alexander Marcus Seifalian
- UCL Centre for Nanotechnology & Regenerative Medicine, Division of Surgery and Interventional Science, University College of London, London, UK
- Royal Free London NHS Foundation Trust Hospital, London, UK
| |
Collapse
|
211
|
Das D, Ghosh P, Dhara S, Panda AB, Pal S. Dextrin and poly(acrylic acid)-based biodegradable, non-cytotoxic, chemically cross-linked hydrogel for sustained release of ornidazole and ciprofloxacin. ACS APPLIED MATERIALS & INTERFACES 2015; 7:4791-4803. [PMID: 25654747 DOI: 10.1021/am508712e] [Citation(s) in RCA: 89] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Herein, novel biodegradable, stimulus-responsive, chemically cross-linked and porous hydrogel has been synthesized to evaluate its applicability as an efficient carrier for sustained release of ornidazole and ciprofloxacin. The cross-linked hydrogel (c-Dxt/pAA) has been developed from dextrin and poly(acrylic acid) using N,N'-methylene bis(acrylamide) cross-linker via Michael-type addition reaction. With the variation of reaction parameters, various c-Dxt/pAA hydrogels have been synthesized to optimize the best one. c-Dxt/pAA hydrogel has been characterized using various physicochemical characterization techniques. The hydrogel demonstrates significant pH and temperature sensitivity. Gel characteristics and gel kinetics have been performed through the measurement of rheological parameters. The hydrogel shows noncytotoxic behavior toward human mesenchymal stem cells. Biodegradation study predicts that c-Dxt/pAA is degradable in nature. The in vitro release of ornidazole and ciprofloxacin suggests that the hydrogel released both the drugs in a controlled manner with extensive stability up to 3 months. The results suggest that c-Dxt/pAA is probably a promising candidate for controlled release of ornidazole and ciprofloxacin.
Collapse
Affiliation(s)
- Dipankar Das
- Polymer Chemistry Laboratory, Department of Applied Chemistry, Indian School of Mines , Dhanbad 826004, India
| | | | | | | | | |
Collapse
|
212
|
Fabrication and characterization of conductive chitosan/gelatin-based scaffolds for nerve tissue engineering. Int J Biol Macromol 2015; 74:360-6. [PMID: 25553968 DOI: 10.1016/j.ijbiomac.2014.12.014] [Citation(s) in RCA: 114] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2014] [Revised: 11/28/2014] [Accepted: 12/03/2014] [Indexed: 01/02/2023]
|
213
|
Ravarian R, Craft M, Dehghani F. Enhancing the biological activity of chitosan and controlling the degradation by nanoscale interaction with bioglass. J Biomed Mater Res A 2015; 103:2898-908. [PMID: 25690303 DOI: 10.1002/jbm.a.35423] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2014] [Revised: 02/01/2015] [Accepted: 02/05/2015] [Indexed: 11/12/2022]
Abstract
A nonuniform degradation of physical mixture of organic-inorganic biomaterials increases their risk of failure. In this study a chemical bonding between chitosan and bioglass was used as an alternative product to address this issue. To prepare a homogenous composite, chitosan was functionalized with γ-glycidoxypropyl trimethoxysilane and chemically bonded with bioglass during sol-gel method. The gelation time of these hybrids samples was optimized by varying parameters such as composition of chitosan and temperature. It was shown that gelation time was reduced from 7 days for pure bioglass at 25°C to less than six minutes at 70°C for chitosan 40 vol % bioglass hybrid. Furthermore, the enzymatic degradation after 4 weeks was decreased from 80% mass loss for pure chitosan to 32% for chitosan 40 vol % bioglass hybrid. The results of in vitro study demonstrated that the presence of nanoscale interaction enhanced the bioactivity of chitosan. Additionally, hybrid scaffolds were fabricated with pore sizes in the range of 200-400 µm. These scaffolds were prepared by the addition of sodium bicarbonate during sol-gel method as a gas foaming agent and a neutralizer that resulted in decreasing the gelation time of hybrids to less than three minutes. The hybrids fabricated in this study possessed superior characteristics compared to chitosan, also physical mixture of chitosan-bioglass and are promising alternatives for bone tissue engineering applications.
Collapse
Affiliation(s)
- Roya Ravarian
- School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, 2006, Australia
| | - Michaela Craft
- School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, 2006, Australia
| | - Fariba Dehghani
- School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, 2006, Australia
| |
Collapse
|
214
|
Biodegradable chitosan nanoparticle coatings on titanium for the delivery of BMP-2. Biomolecules 2015; 5:3-19. [PMID: 25581889 PMCID: PMC4384108 DOI: 10.3390/biom5010003] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2014] [Accepted: 12/31/2014] [Indexed: 11/17/2022] Open
Abstract
A simple method for the functionalization of a common implant material (Ti6Al4V) with biodegradable, drug loaded chitosan-tripolyphosphate (CS-TPP) nanoparticles is developed in order to enhance the osseointegration of endoprostheses after revision operations. The chitosan used has a tailored degree of acetylation which allows for a fast biodegradation by lysozyme. The degradability of chitosan is proven via viscometry. Characteristics and degradation of nanoparticles formed with TPP are analyzed using dynamic light scattering. The particle degradation via lysozyme displays a decrease in particle diameter of 40% after 4 days. Drug loading and release is investigated for the nanoparticles with bone morphogenetic protein 2 (BMP-2), using ELISA and the BRE luciferase test for quantification and bioactivity evaluation. Furthermore, nanoparticle coatings on titanium substrates are created via spray-coating and analyzed by ellipsometry, scanning electron microscopy and X-ray photoelectron spectroscopy. Drug loaded nanoparticle coatings with biologically active BMP-2 are obtained in vitro within this work. Additionally, an in vivo study in mice indicates the dose dependent induction of ectopic bone growth through CS-TPP-BMP-2 nanoparticles. These results show that biodegradable CS-TPP coatings can be utilized to present biologically active BMP-2 on common implant materials like Ti6Al4V.
Collapse
|
215
|
Zając A, Hanuza J, Wandas M, Dymińska L. Determination of N-acetylation degree in chitosan using Raman spectroscopy. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 134:114-20. [PMID: 25011040 DOI: 10.1016/j.saa.2014.06.071] [Citation(s) in RCA: 143] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2014] [Revised: 06/05/2014] [Accepted: 06/11/2014] [Indexed: 05/21/2023]
Abstract
Application of Raman spectroscopy in determination of the acetylation degree (DA) of chitosan has been developed. The spectra of several chitosan samples characterized by different DD (degree of deacetylation) in the range 50-100% have been measured. The integral intensities of the bands assigned to the vibrations of amine group and glucosidic ring were used to calculate the DA from the intensity ratio. The assignment of the bands to the respective normal modes of chitosan was based on the DFT quantum chemical calculations. This method has a number of advantages over other techniques. It is fast and does not require purification of the sample nor require dissolution of the chitosan in any solvent.
Collapse
Affiliation(s)
- A Zając
- Department of Bioorganic Chemistry, Institute of Chemistry and Food Technology, Faculty of Engineering and Economics, Wrocław University of Economics, Komandorska 118/120, 53-345 Wrocław, Poland
| | - J Hanuza
- Department of Bioorganic Chemistry, Institute of Chemistry and Food Technology, Faculty of Engineering and Economics, Wrocław University of Economics, Komandorska 118/120, 53-345 Wrocław, Poland; Institute of Low Temperature and Structure Research, Polish Academy of Sciences, P.O. Box 1410, 50-950 Wrocław 2, Poland
| | - M Wandas
- Department of Bioorganic Chemistry, Institute of Chemistry and Food Technology, Faculty of Engineering and Economics, Wrocław University of Economics, Komandorska 118/120, 53-345 Wrocław, Poland
| | - L Dymińska
- Department of Bioorganic Chemistry, Institute of Chemistry and Food Technology, Faculty of Engineering and Economics, Wrocław University of Economics, Komandorska 118/120, 53-345 Wrocław, Poland.
| |
Collapse
|
216
|
Das R, Das D, Ghosh P, Dhara S, Panda AB, Pal S. Development and application of a nanocomposite derived from crosslinked HPMC and Au nanoparticles for colon targeted drug delivery. RSC Adv 2015. [DOI: 10.1039/c5ra02672e] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Herein, we report a novel route for the synthesis of poly(acrylamide) (PAAm) crosslinked hydroxypropyl methyl cellulose/Au nanocomposite where chemically crosslinked HPMC (c-HPMC) works as a reducing agent.
Collapse
Affiliation(s)
- Raghunath Das
- Polymer Chemistry Laboratory
- Department of Applied Chemistry
- Indian School of Mines
- Dhanbad-826004
- India
| | - Dipankar Das
- Polymer Chemistry Laboratory
- Department of Applied Chemistry
- Indian School of Mines
- Dhanbad-826004
- India
| | - Paulomi Ghosh
- School of Medical Science & Technology
- Indian Institute of Technology
- Kharagpur-721302
- India
| | - Santanu Dhara
- School of Medical Science & Technology
- Indian Institute of Technology
- Kharagpur-721302
- India
| | - Asit Baran Panda
- Discipline of Inorganic Materials and Catalysis
- Central Salt and Marine Chemicals Research Institute (CSIR)
- Bhavnagar-364002
- India
| | - Sagar Pal
- Polymer Chemistry Laboratory
- Department of Applied Chemistry
- Indian School of Mines
- Dhanbad-826004
- India
| |
Collapse
|
217
|
Huang Y, Cai Y, Lapitsky Y. Factors affecting the stability of chitosan/tripolyphosphate micro- and nanogels: resolving the opposing findings. J Mater Chem B 2015; 3:5957-5970. [DOI: 10.1039/c5tb00431d] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The stability of submicron chitosan/tripolyphosphate particles depends on the chitosan type, pH, ionic strength and particle concentration.
Collapse
Affiliation(s)
- Yan Huang
- Department of Chemical and Environmental Engineering
- University of Toledo
- Toledo
- USA
| | - Yuhang Cai
- Department of Chemical and Environmental Engineering
- University of Toledo
- Toledo
- USA
| | - Yakov Lapitsky
- Department of Chemical and Environmental Engineering
- University of Toledo
- Toledo
- USA
- School of Green Chemistry and Engineering
| |
Collapse
|
218
|
Justin R, Román S, Chen D, Tao K, Geng X, Grant RT, MacNeil S, Sun K, Chen B. Biodegradable and conductive chitosan–graphene quantum dot nanocomposite microneedles for delivery of both small and large molecular weight therapeutics. RSC Adv 2015. [DOI: 10.1039/c5ra04340a] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Chitosan–graphene quantum dot nanocomposites are used in microneedle arrays for transdermal delivery of small and large molecular weight drugs.
Collapse
Affiliation(s)
- Richard Justin
- Department of Materials Science and Engineering
- University of Sheffield
- Sheffield S1 3JD
- UK
| | - Sabiniano Román
- Department of Materials Science and Engineering
- University of Sheffield
- Sheffield S1 3JD
- UK
| | - Dexin Chen
- The State Key Laboratory of Metal Matrix Composites
- School of Materials Science and Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- China
| | - Ke Tao
- The State Key Laboratory of Metal Matrix Composites
- School of Materials Science and Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- China
| | - Xiangshuai Geng
- Department of Materials Science and Engineering
- University of Sheffield
- Sheffield S1 3JD
- UK
| | - Richard T. Grant
- Department of Physics and Astronomy
- University of Sheffield
- Sheffield S3 7RH
- UK
| | - Sheila MacNeil
- Department of Materials Science and Engineering
- University of Sheffield
- Sheffield S1 3JD
- UK
| | - Kang Sun
- The State Key Laboratory of Metal Matrix Composites
- School of Materials Science and Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- China
| | - Biqiong Chen
- Department of Materials Science and Engineering
- University of Sheffield
- Sheffield S1 3JD
- UK
| |
Collapse
|
219
|
Dreifke MB, Jayasuriya AA, Jayasuriya AC. Current wound healing procedures and potential care. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 48:651-62. [PMID: 25579968 DOI: 10.1016/j.msec.2014.12.068] [Citation(s) in RCA: 291] [Impact Index Per Article: 29.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2014] [Revised: 12/05/2014] [Accepted: 12/17/2014] [Indexed: 02/06/2023]
Abstract
In this review, we describe current and future potential wound healing treatments for acute and chronic wounds. The current wound healing approaches are based on autografts, allografts, and cultured epithelial autografts, and wound dressings based on biocompatible and biodegradable polymers. The Food and Drug Administration approved wound healing dressings based on several polymers including collagen, silicon, chitosan, and hyaluronic acid. The new potential therapeutic intervention for wound healing includes sustained delivery of growth factors, and siRNA delivery, targeting microRNA, and stem cell therapy. In addition, environment sensors can also potentially utilize to monitor and manage microenvironment at wound site. Sensors use optical, odor, pH, and hydration sensors to detect such characteristics as uric acid level, pH, protease level, and infection - all in the hopes of early detection of complications.
Collapse
Affiliation(s)
- Michael B Dreifke
- Department of Orthopaedic Surgery, College of Medicine and Life Sciences, The University of Toledo, Toledo, OH 43614-5807, USA
| | - Amil A Jayasuriya
- Undergraduate Program, Department of Human Evolutionary Biology, Harvard University, Cambridge, MA 02138, USA
| | - Ambalangodage C Jayasuriya
- Department of Orthopaedic Surgery, College of Medicine and Life Sciences, The University of Toledo, Toledo, OH 43614-5807, USA.
| |
Collapse
|
220
|
Gonzalez-Perez F, Cobianchi S, Geuna S, Barwig C, Freier T, Udina E, Navarro X. Tubulization with chitosan guides for the repair of long gap peripheral nerve injury in the rat. Microsurgery 2014; 35:300-8. [PMID: 25471200 DOI: 10.1002/micr.22362] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2014] [Revised: 10/20/2014] [Accepted: 11/20/2014] [Indexed: 12/12/2022]
Abstract
Biosynthetic guides can be an alternative to nerve grafts for reconstructing severely injured peripheral nerves. The aim of this study was to evaluate the regenerative capability of chitosan tubes to bridge critical nerve gaps (15 mm long) in the rat sciatic nerve compared with silicone (SIL) tubes and nerve autografts (AGs). A total of 28 Wistar Hannover rats were randomly distributed into four groups (n = 7 each), in which the nerve was repaired by SIL tube, chitosan guides of low (∼2%, DAI) and medium (∼5%, DAII) degree of acetylation, and AG. Electrophysiological and algesimetry tests were performed serially along 4 months follow-up, and histomorphometric analysis was performed at the end of the study. Both groups with chitosan tubes showed similar degree of functional recovery, and similar number of myelinated nerve fibers at mid tube after 4 months of implantation. The results with chitosan tubes were significantly better compared to SIL tubes (P < 0.01), but lower than with AG (P < 0.01). In contrast to AG, in which all the rats had effective regeneration and target reinnervation, chitosan tubes from DAI and DAII achieved 43 and 57% success, respectively, whereas regeneration failed in all the animals repaired with SIL tubes. This study suggests that chitosan guides are promising conduits to construct artificial nerve grafts.
Collapse
Affiliation(s)
- F Gonzalez-Perez
- Department of Cell Biology, Physiology, and Immunology, Institute of Neurosciences, Universitat Autònoma de Barcelona and CIBERNED, Bellaterra, Spain
| | - S Cobianchi
- Department of Cell Biology, Physiology, and Immunology, Institute of Neurosciences, Universitat Autònoma de Barcelona and CIBERNED, Bellaterra, Spain
| | - S Geuna
- Department of Clinical and Biological Sciences, Cavalieri Ottolenghi Neuroscience Institute, University of Turin, Turin, Italy
| | | | | | - E Udina
- Department of Cell Biology, Physiology, and Immunology, Institute of Neurosciences, Universitat Autònoma de Barcelona and CIBERNED, Bellaterra, Spain
| | - X Navarro
- Department of Cell Biology, Physiology, and Immunology, Institute of Neurosciences, Universitat Autònoma de Barcelona and CIBERNED, Bellaterra, Spain
| |
Collapse
|
221
|
Kim S, Bedigrew K, Guda T, Maloney WJ, Park S, Wenke JC, Yang YP. Novel osteoinductive photo-cross-linkable chitosan-lactide-fibrinogen hydrogels enhance bone regeneration in critical size segmental bone defects. Acta Biomater 2014; 10:5021-5033. [PMID: 25174669 DOI: 10.1016/j.actbio.2014.08.028] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2014] [Revised: 08/20/2014] [Accepted: 08/22/2014] [Indexed: 02/05/2023]
Abstract
The purpose of this study was to develop and characterize a novel photo-cross-linkable chitosan-lactide-fibrinogen (CLF) hydrogel and evaluate the efficacy of bone morphogenetic protein-2 (BMP-2) containing a CLF hydrogel for osteogenesis in vitro and in vivo. We synthesized the CLF hydrogels and characterized their chemical structure, degradation rate, compressive modulus and in vitro BMP-2 release kinetics. We evaluated bioactivities of the BMP-2 containing CLF hydrogels (0, 50, 100 and 500ngml(-1)) in vitro using W-20-17 preosteoblast mouse bone marrow stromal cells and C2C12 mouse myoblast cells. The effect of BMP-2 containing CLF gels (0, 0.5, 1, 2 and 5μg) on bone formation was evaluated using rat critical size segmental bone defects for 4weeks. Fourier transform infrared spectroscopy spectra and scanning electron microscopy images showed chemical and structural changes by the addition of fibrinogen into the chitosan-lactide copolymer. The incorporation of fibrinogen molecules significantly increased the compressive modulus of the hydrogels. The in vitro BMP-2 release study showed initial burst releases from the CLF hydrogels followed by sustained releases, regardless of the concentration of the BMP-2 over 4weeks. Cells in all groups were viable in the presence of the hydrogels regardless of BMP-2 doses, indicating non-cytotoxicity of hydrogels. Alkaline phosphate activity and mineralization of cells exhibited dose dependence on BMP-2 containing CLF hydrogels. Radiography, microcomputed tomography and histology confirmed that the BMP-2 containing CLF hydrogels prompted neo-osteogenesis and accelerated healing of the defects in a dose-dependent manner. Thus the CLF hydrogel is a promising delivery system of growth factors for bone regeneration.
Collapse
|
222
|
Guitian Oliveira N, Sirgado T, Reis L, Pinto LF, da Silva CL, Ferreira FC, Rodrigues A. In vitro assessment of three dimensional dense chitosan-based structures to be used as bioabsorbable implants. J Mech Behav Biomed Mater 2014; 40:413-425. [DOI: 10.1016/j.jmbbm.2014.09.014] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2014] [Revised: 08/30/2014] [Accepted: 09/08/2014] [Indexed: 01/14/2023]
|
223
|
Ghormade V, Gholap H, Kale S, Kulkarni V, Bhat S, Paknikar K. Fluorescent cadmium telluride quantum dots embedded chitosan nanoparticles: a stable, biocompatible preparation for bio-imaging. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2014; 26:42-56. [DOI: 10.1080/09205063.2014.982240] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
224
|
Gasperini L, Mano JF, Reis RL. Natural polymers for the microencapsulation of cells. J R Soc Interface 2014; 11:20140817. [PMID: 25232055 PMCID: PMC4191114 DOI: 10.1098/rsif.2014.0817] [Citation(s) in RCA: 355] [Impact Index Per Article: 35.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2014] [Accepted: 08/27/2014] [Indexed: 02/06/2023] Open
Abstract
The encapsulation of living mammalian cells within a semi-permeable hydrogel matrix is an attractive procedure for many biomedical and biotechnological applications, such as xenotransplantation, maintenance of stem cell phenotype and bioprinting of three-dimensional scaffolds for tissue engineering and regenerative medicine. In this review, we focus on naturally derived polymers that can form hydrogels under mild conditions and that are thus capable of entrapping cells within controlled volumes. Our emphasis will be on polysaccharides and proteins, including agarose, alginate, carrageenan, chitosan, gellan gum, hyaluronic acid, collagen, elastin, gelatin, fibrin and silk fibroin. We also discuss the technologies commonly employed to encapsulate cells in these hydrogels, with particular attention on microencapsulation.
Collapse
Affiliation(s)
- Luca Gasperini
- 3B's, Department of Polymer Engineering, University of Minho, 4806-909 Caldas das Taipas, Portugal ICVS/3B's, PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - João F Mano
- 3B's, Department of Polymer Engineering, University of Minho, 4806-909 Caldas das Taipas, Portugal ICVS/3B's, PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Rui L Reis
- 3B's, Department of Polymer Engineering, University of Minho, 4806-909 Caldas das Taipas, Portugal ICVS/3B's, PT Government Associate Laboratory, Braga/Guimarães, Portugal
| |
Collapse
|
225
|
Lim C, Lee DW, Israelachvili JN, Jho Y, Hwang DS. Contact time- and pH-dependent adhesion and cohesion of low molecular weight chitosan coated surfaces. Carbohydr Polym 2014; 117:887-894. [PMID: 25498713 DOI: 10.1016/j.carbpol.2014.10.033] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2014] [Revised: 10/08/2014] [Accepted: 10/09/2014] [Indexed: 11/25/2022]
Abstract
Low molecular weight chitosan (LMW chitosan, ∼5 kDa) potentially has many desirable biomedical applications such as anti-microbial, anti-tumor, and anti-diabetes. Unlike high molecular weight chitosan, LMW chitosan is easily dissolvable in aqueous solutions even at neutral and basic pH, but its dissolution mechanism is not well understood. Here, we measured adhesion and cohesion of molecularly thin LMW chitosan films in aqueous solutions in different buffer pHs (from 3.0 to 8.5) using a surface forces apparatus (SFA). Interestingly, significantly lower adhesion force was measured for LMW chitosan films compared to the high molecular weight chitosan (∼150 kDa) films. Not only the strength of adhesion is lower, but also the critical contact time where adhesion starts to increase with contact time is longer. The results from both the SFA and atomic force microscopy (AFM) indicate that, in physiological and basic conditions, the low cohesion of LMW chitosan due to the stiffness of the chain which cause strong electrostatic correlation energy penalty when they are aggregated. Here, we propose the reduction in cohesion for shorter chitosan (LMW chitosan) as an explanation of its high solubility of LMW chitosan in physiological pHs.
Collapse
Affiliation(s)
- Chanoong Lim
- School of Interdisciplinary Bioscience and Bioengineering, Pohang University of Science and Technology (POSTECH), Pohang 790-784, South Korea
| | - Dong Woog Lee
- Department of Chemical Engineering, University of California at Santa Barbara, CA 93106, USA
| | - Jacob N Israelachvili
- School of Interdisciplinary Bioscience and Bioengineering, Pohang University of Science and Technology (POSTECH), Pohang 790-784, South Korea
| | - YongSeok Jho
- Asia Pacific Center for Theoretical Physics, Pohang, Gyeongbuk 790-784, South Korea; Department of Physics, Pohang University of Science and Technology, Pohang, Gyeongbuk 790-784, South Korea
| | - Dong Soo Hwang
- School of Interdisciplinary Bioscience and Bioengineering, Pohang University of Science and Technology (POSTECH), Pohang 790-784, South Korea; School of Environmental Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang 790-784, South Korea; Integrative Biosciences and Biotechnology, Pohang University of Science and Technology (POSTECH), Pohang 790-784, South Korea.
| |
Collapse
|
226
|
Goldberg M, Manzi A, Aydin E, Singh G, Khoshkenar P, Birdi A, LaPorte B, Krauskopf A, Powell G, Chen J, Langer R. Development of a Nanoparticle-Embedded Chitosan Sponge for Topical and Local Administration of Chemotherapeutic Agents. J Nanotechnol Eng Med 2014; 5:0409051-4090511. [PMID: 26336575 PMCID: PMC4547506 DOI: 10.1115/1.4030899] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2015] [Revised: 06/17/2015] [Indexed: 11/08/2022]
Abstract
The following work describes the development of a novel noninvasive transmucosal drug delivery system, the chitosan sponge matrix (CSM). It is composed of cationic chitosan (CS) nanoparticles (NPs) that encapsulate cisplatin (CDDP) embedded within a polymeric mucoadhesive CS matrix. CSM is designed to swell up when exposed to moisture, facilitating release of the NPs via diffusion across the matrix. CSM is intended to be administered topically and locally to mucosal tissues, with its initial indication being oral cancer (OC). Currently, intravenous (IV) administered CDDP is the gold standard chemotherapeutic agent used in the treatment of OC. However, its clinical use has been limited by its renal and hemotoxicity profile. We aim to locally administer CDDP via encapsulation in CS NPs and deliver them directly to the oral cavity with CSM. It is hypothesized that such a delivery device will greatly reduce any systemic toxicity and increase antitumor efficacy. This paper describes the methods for developing CSM and maintaining the integrity of CDDP NPs embedded in the CSM.
Collapse
Affiliation(s)
| | - Aaron Manzi
- Massachusetts Institute of Technology , Cambridge, MA 02139
| | - Erkin Aydin
- Massachusetts Institute of Technology , Cambridge, MA 02139
| | - Gurtej Singh
- Massachusetts Institute of Technology , Cambridge, MA 02139
| | | | | | | | | | - Geralle Powell
- Wellesley College , Department of Biology, Wellesley, MA 02481
| | - Julie Chen
- University of Massachusetts Lowell , Department of Mechanical Engineering, Lowell, MA 01854
| | - Robert Langer
- Massachusetts Institute of Technology , Cambridge, MA 02139
| |
Collapse
|
227
|
|
228
|
Kalinkevich OV, Pogorelov MV, Babich IM, Deĭneka VN, Kalinkevich AN, Danil'chenko SN, Tkach GF. [In-vitro degradation of the chitosan membranes under various syntheses conditions]. BIOMEDITSINSKAIA KHIMIIA 2014; 60:636-642. [PMID: 25552502 DOI: 10.18097/pbmc20146006636] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The hydrolytic degradation of polymer films, which were obtained by application of 2% and 3% chitosan solutions in 1% acetic acid on a base sheet has been investigated. As the solvent was removed, these firms were either treated with 0.5% NaOH for 3 min or with phosphate buffer (рН 8) for 10 min. The degrees of degradation for the obtained samples were studied during 1-96 h in solutions with pH values of 5.0, 7.0 and 8.5. The results revealed resistance of the films within the first 6 h, followed by their subsequent degradation. The rate of degradation depended on pH of the solution, chitosan percentage and the treatment methods of films. The materials with the initial chitosan content of 3% were more resistant to the hydrolytic degradation, but the decreasing in pH accelerated the weight loss of the film. However, if the membranes were treated with phosphate buffer, the rate and degree of sample degradation were slowed down. Thus, the results are considered as a basis for the further development of biomaterials to treat the skin surface damages.
Collapse
Affiliation(s)
- O V Kalinkevich
- Institute of Applied Physics of National Academy of Sciences of Ukraine, Sumy, Ukraine
| | | | - I M Babich
- Sumy State University, Medical Institute
| | | | - A N Kalinkevich
- Institute of Applied Physics of National Academy of Sciences of Ukraine, Sumy, Ukraine
| | - S N Danil'chenko
- Institute of Applied Physics of National Academy of Sciences of Ukraine, Sumy, Ukraine
| | - G F Tkach
- Sumy State University, Medical Institute
| |
Collapse
|
229
|
Wu C, Kao CY, Tseng SY, Chen KC, Chen SF. Determination of the degree of deacetylation of chitosan by capillary zone electrophoresis. Carbohydr Polym 2014; 111:236-44. [DOI: 10.1016/j.carbpol.2014.04.086] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2014] [Revised: 04/15/2014] [Accepted: 04/22/2014] [Indexed: 11/28/2022]
|
230
|
Mekhail M, Tabrizian M. Injectable chitosan-based scaffolds in regenerative medicine and their clinical translatability. Adv Healthc Mater 2014; 3:1529-45. [PMID: 24616443 DOI: 10.1002/adhm.201300586] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2013] [Revised: 01/19/2014] [Indexed: 12/17/2022]
Abstract
Injectable scaffolds (IS) are polymeric solutions that are injected in vivo and undergo gelation in response to physiological or non-physiological stimuli. Interest in using IS in regenerative medicine has been increasing this past decade. IS are administered in vivo using minimally invasive surgery, which reduces hospitalization time and risk of surgical wound infection. Here, chitosan is explored as an excellent candidate for developing IS. A literature search reveals that 27% of IS publications in the past decade investigated injectable chitosan scaffolds (ICS). This increasing interest in chitosan stems from its many desirable physicochemical properties. The first section of this Progress Report is a comprehensive study of all physical, chemical, and biological stimuli that have been explored to induce ICS gelation in vivo. Second, the use of ICS is investigated in four major regenerative medicine applications, namely bone, cartilage, cardiovascular, and neural regeneration. Finally, an overall critique of the ICS literature in light of clinical translatability is presented. Even though ICS have been widely explored in the literature, very few have progressed to clinical trials. The authors discuss the current barriers to moving ICS into the clinic and provide suggestions regarding what is needed to overcome those challenges.
Collapse
Affiliation(s)
- Mina Mekhail
- Biomedical Engineering, Duff Medical Building; Room 313, McGill; Montreal H3A 2B4 Canada
| | - Maryam Tabrizian
- Biomedical Engineering, Duff Medical Building; Room 313, McGill; Montreal H3A 2B4 Canada
| |
Collapse
|
231
|
The Beneficial Effect of Chitooligosaccharides on Cell Behavior and Function of Primary Schwann Cells is Accompanied by Up-Regulation of Adhesion Proteins and Neurotrophins. Neurochem Res 2014; 39:2047-57. [DOI: 10.1007/s11064-014-1387-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2014] [Revised: 06/30/2014] [Accepted: 07/11/2014] [Indexed: 01/12/2023]
|
232
|
Wu F, Meng G, He J, Wu Y, Wu F, Gu Z. Antibiotic-loaded chitosan hydrogel with superior dual functions: antibacterial efficacy and osteoblastic cell responses. ACS APPLIED MATERIALS & INTERFACES 2014; 6:10005-13. [PMID: 24938653 DOI: 10.1021/am502537k] [Citation(s) in RCA: 90] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
It is critical for the clinical success to take the biological function into consideration when integrating the antibacterial function into the implanted biomaterials. To this aim, we prepared gentamycin sulfate (GS)-loaded carboxymethyl-chitosan (CM-chitosan) hydrogel cross-linked by genipin. The prepared hydrogels not only achieved superb inhibition on bacteria growth and biofilm formation of Staphylococcus aureus but also significantly enhanced the adhesion, proliferation, and differentiation of MC3T3-E1 cells. The observed dual functions were likely based on the intrinsic property of the positive charged chitosan-based hydrogel, which could be modified to selectively disrupt the bacteria wall/membrane and promote cell adhesion and proliferation, as suggested by the membrane permeability study. The genipin concentration played an important role in controlling the degradation time of the chitosan hydrogel and the MC3T3-E1 cell responses. The loading of GS not only significantly increased the antibacterial efficiency but also was beneficial for the osteoblastic cell responses. Overall, the biocompatibility of the prepared chitosan-GS hydrogel could be tuned with both the genipin and GS concentrations, which control the available positive charged sites of chitosan. The results demonstrated that chitosan-GS hydrogel is an effective and simple approach to achieving combined antibacterial efficacy and excellent osteoblastic cell responses, which has great potential in orthopedic applications.
Collapse
Affiliation(s)
- Fang Wu
- National Engineering Research Center for Biomaterials, Sichuan University , Chengdu 610064, P.R. China
| | | | | | | | | | | |
Collapse
|
233
|
GOVINDASAMY K, FERNANDOPULLE C, PASBAKHSH POORIA, GOH KL. SYNTHESIS AND CHARACTERISATION OF ELECTROSPUN CHITOSAN MEMBRANES REINFORCED BY HALLOYSITE NANOTUBES. J MECH MED BIOL 2014. [DOI: 10.1142/s0219519414500584] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
We report on the electrospinning method to synthesize and characterise chitosan membranes reinforced by halloysite nanotubes (HNTs). The synthesis process addressed two levels of HNTs concentration, i.e., 2 and 5 wt.%. Tensile testing was carried out to determine the strength (σ), strain (ε) at σ and elastic modulus (E) of the membranes. Tensile test data revealed that the membranes reinforced with 5 wt.% HNTs yielded the highest E (0.153 ± 0.02 GPa) and strength (22.53 ± 8.57 MPa). Electron micrographs of the fractured surfaces showed uniform dispersions of HNTs in the chitosan matrix. Infrared spectra indicated interactions between chitosan and inner and outer surfaces of HNTs. Thermogravimetric analysis demonstrated an increase in thermal stability with the addition of HNTs. Membranes immersed in simulated body fluid system for 28 days revealed the formation of dense apatite blocks with the addition of HNTs. Surface roughness increased with the addition of HNTs resulted a rise in degree of contact angle.
Collapse
Affiliation(s)
- K. GOVINDASAMY
- School of Engineering, Monash University Malaysia, Bandar Sunway, Selangor, Malaysia
| | - C. FERNANDOPULLE
- School of Engineering, Monash University Malaysia, Bandar Sunway, Selangor, Malaysia
| | - POORIA PASBAKHSH
- School of Engineering, Monash University Malaysia, Bandar Sunway, Selangor, Malaysia
| | - K. L. GOH
- School of Mechanical & Systems Engineering, Newcastle University, Newcastle Upon Tyne, UK
| |
Collapse
|
234
|
Xie CM, Lu X, Wang KF, Meng FZ, Jiang O, Zhang HP, Zhi W, Fang LM. Silver nanoparticles and growth factors incorporated hydroxyapatite coatings on metallic implant surfaces for enhancement of osteoinductivity and antibacterial properties. ACS APPLIED MATERIALS & INTERFACES 2014; 6:8580-8589. [PMID: 24720634 DOI: 10.1021/am501428e] [Citation(s) in RCA: 101] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Research on incorporation of both growth factors and silver (Ag) into hydroxyapatite (HA) coatings on metallic implant surfaces for enhancing osteoinductivity and antibacterial properties is a challenging work. Generally, Ag nanoparticles are easy to agglomerate and lead to a large increase in local Ag concentration, which could potentially affect cell activity. On the other hand, growth factors immobilization requires mild processing conditions so as to maintain their activities. In this study, bone morphology protein-2 (BMP-2) and Ag nanoparticle contained HA coatings were prepared on Ti surfaces by combining electrochemical deposition (ED) of Ag and electrostatic immobilization of BMP-2. During the ED process, chitosan (CS) was selected as the stabilizing agent to chelate Ag ions and generate Ag nanoparticles that are uniformly distributed in the coatings. CS also reduces Ag toxicity while retaining its antibacterial activity. Afterwards, a BMP/heparin solution was absorbed on the CS/Ag/HA coatings. Consequently, BMP-2 was immobilized on the coatings by the electrostatic attraction between CS, heparin, and BMP-2. Sustained release of BMP-2 and Ag ions from HA coatings was successfully demonstrated for a long period. Results of antibacterial tests indicate that the CS/Ag/HA coatings have high antibacterial properties against both Staphylococcus epidermidis and Escherichia coli. Osteoblasts (OB) culture reveals that the CS/Ag/HA coatings exhibit good biocompatibility. Bone marrow stromal cells (BMSCs) culture indicates that the BMP/CS/Ag/HA coatings have good osteoinductivity and promote the differentiation of BMSCs. Ti bars with BMP/CS/Ag/HA coatings were implanted into the femur of rabbits to evaluate the osteoinductivity of the coatings. Results indicate that BMP/CS/Ag/HA coatings favor bone formation in vivo. In summary, this study presents a convenient and effective method for the incorporation of growth factors and antibacterial agents into HA coatings. This method can be utilized to modify a variety of metallic implant surfaces.
Collapse
Affiliation(s)
- Chao-Ming Xie
- Key Lab of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University , Chengdu, Sichuan 610031, China
| | | | | | | | | | | | | | | |
Collapse
|
235
|
Justin R, Chen B. Strong and conductive chitosan-reduced graphene oxide nanocomposites for transdermal drug delivery. J Mater Chem B 2014; 2:3759-3770. [PMID: 32261722 DOI: 10.1039/c4tb00390j] [Citation(s) in RCA: 83] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Chitosan-reduced graphene oxide (rGO) nanocomposites were synthesized through a biocompatible reduction process and were first reported for applications in transdermal drug delivery devices, such as microneedle arrays. Introducing rGO improved the mechanical properties of chitosan, with the strongest nanocomposites containing 1 wt% and 2 wt% rGO chosen to undergo drug delivery testing. The addition of rGO increased the electrical conductivity of chitosan, allowing the nanocomposites to be used for electroporation or iontophoresis drug delivery applications. The rGO content was proven to be an important factor for drug delivery due to the bonding of drug onto rGO. Increasing the rGO content allowed for a quicker and more substantial drug release, allowing for a controlled drug release rate. The nanocomposites also exhibited pH dependent release behaviour, with a reduced release rate in the presence of an acidic medium. The biodegradation rate of chitosan decreased when rGO was added but the biodegradation rates of the nanocomposites are not dependent on the rGO concentration, with nanocomposites of 1 wt% and 2 wt% rGO possessing a similar biodegradation path. The use of the nanocomposite in a microneedle array was shown through compression testing and drug release testing in a pseudo-in vivo environment.
Collapse
Affiliation(s)
- Richard Justin
- Department of Materials Science and Engineering, University of Sheffield, Mappin Street, Sheffield S1 3JD, England.
| | | |
Collapse
|
236
|
Wrobel S, Serra SC, Ribeiro-Samy S, Sousa N, Heimann C, Barwig C, Grothe C, Salgado AJ, Haastert-Talini K. In vitro evaluation of cell-seeded chitosan films for peripheral nerve tissue engineering. Tissue Eng Part A 2014; 20:2339-49. [PMID: 24606318 DOI: 10.1089/ten.tea.2013.0621] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Natural biomaterials have attracted an increasing interest in the field of tissue-engineered nerve grafts, representing a possible alternative to autologous nerve transplantation. With the prospect of developing a novel entubulation strategy for transected nerves with cell-seeded chitosan films, we examined the biocompatibility of such films in vitro. Different types of rat Schwann cells (SCs)--immortalized, neonatal, and adult-of the chitosan substrate. Both cell types were viable on the biomaterial and showed different metabolic activities and proliferation behavior, indicating cell-type-specific cell-biomaterial interaction. Moreover, the cell types also displayed their typical morphology. In cocultures adult SCs used the BMSCs as a feeder layer and no negative interactions between both cell types were detected. Further, the chitosan films allow neurite outgrowth from dissociated sensory neurons, which is additionally supported on film preseeded with SC-BMSC cocultures. The presented chitosan films therefore demonstrate high potential for their use in tissue-engineered nerve grafts.
Collapse
Affiliation(s)
- Sandra Wrobel
- 1 Hannover Medical School, Institute of Neuroanatomy , Hannover, Germany
| | | | | | | | | | | | | | | | | |
Collapse
|
237
|
Huang F, Cui L, Peng CH, Wu XB, Han BS, Dong YD. Preparation of three-dimensional macroporous chitosan-gelatin B microspheres and HepG2-cell culture. J Tissue Eng Regen Med 2014; 10:1033-1040. [PMID: 24729421 DOI: 10.1002/term.1888] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2013] [Revised: 12/01/2013] [Accepted: 02/24/2014] [Indexed: 11/11/2022]
Abstract
Chitosan-gelatin B microspheres with an open, interconnected, highly macroporous (100-200 µm) structure were prepared via a three-step protocol combining freeze-drying with an electrostatic and ionic cross-linking method. Saturated tripolyphosphate ethanol solution (85% ethanol) was chosen as the crosslinking agent to prevent destruction of the porous structure and to improve the biostability of the chitosan-gelatin B microspheres, with N-(3-dimethylaminopropyl)-N'-ethyl-carbodiimide/N-hydroxysuccinimide as a second crosslinking agent to react with gelatin A and fixed chitosan-gelatin B microspheres to attain improved biocompatibility. Water absorption of the three-dimensional macroporous chitosan-gelatin B microspheres (3D-P-CGMs) was 12.84, with a porosity of 85.45%. In vitro lysozyme degradation after 1, 3, 5, 7, 10, 14, and 21 days showed improved biodegradation in the 3D-P-CGMs. The morphology of human hepatoma cell lines (HepG2 cells) cultured on the 3D-P-CGMs was spherical, unlike that of cells cultured under traditional two-dimensional conditions. Scanning electron microscopy and paraffin sections were used to confirm the porous structure of the 3D-P-CGMs. HepG2 cells were able to migrate inside through the pore. Cell proliferation and levels of albumin and lactate dehydrogenase suggested that the 3D-P-CGMs could provide a larger specific surface area and an appropriate microenvironment for cell growth and survival. Hence, the 3D-P-CGMs are eminently suitable as macroporous scaffolds for cell cultures in tissue engineering and cell carrier studies. Copyright © 2014 John Wiley & Sons, Ltd.
Collapse
Affiliation(s)
- Fang Huang
- Department of General Surgery, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Long Cui
- Department of General Surgery, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Cheng-Hong Peng
- Department of General Surgery, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xu-Bo Wu
- Department of General Surgery, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Department of General Surgery, Central Hospital, Minghang District, Shanghai, China
| | - Bao-San Han
- Department of General Surgery, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Department of General Surgery, Xin Hua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ya-Dong Dong
- Department of General Surgery, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| |
Collapse
|
238
|
Nada AA, James R, Shelke NB, Harmon MD, Awad HM, Nagarale RK, Kumbar SG. A smart methodology to fabricate electrospun chitosan nanofiber matrices for regenerative engineering applications. POLYM ADVAN TECHNOL 2014. [DOI: 10.1002/pat.3292] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Ahmed A. Nada
- Institute for Regenerative Engineering; University of Connecticut Health Center; CT 06030 USA
- The Raymond and Beverly Sackler Center for Biomedical, Biological, Physical and Engineering Sciences; CT 06030 USA
- Department of Orthopedic Surgery; University of Connecticut Health Center; CT 06030 USA
- Textile Research Division; National Research Center; Dokki Cairo 12622 Egypt
| | - Roshan James
- Institute for Regenerative Engineering; University of Connecticut Health Center; CT 06030 USA
- The Raymond and Beverly Sackler Center for Biomedical, Biological, Physical and Engineering Sciences; CT 06030 USA
- Department of Orthopedic Surgery; University of Connecticut Health Center; CT 06030 USA
| | - Namdev B. Shelke
- Institute for Regenerative Engineering; University of Connecticut Health Center; CT 06030 USA
- The Raymond and Beverly Sackler Center for Biomedical, Biological, Physical and Engineering Sciences; CT 06030 USA
- Department of Orthopedic Surgery; University of Connecticut Health Center; CT 06030 USA
| | - Matthew D. Harmon
- Institute for Regenerative Engineering; University of Connecticut Health Center; CT 06030 USA
- The Raymond and Beverly Sackler Center for Biomedical, Biological, Physical and Engineering Sciences; CT 06030 USA
- Department of Orthopedic Surgery; University of Connecticut Health Center; CT 06030 USA
- Department of Materials Science & Engineering and Biomedical Engineering; University of Connecticut; CT 06269 USA
| | - Hassan M. Awad
- Chemistry of Natural and Microbial Products Department, Pharmaceutical Industries Division; National Research Center; Dokki Cairo 12622 Egypt
| | - Rajaram K. Nagarale
- Department of Chemical Engineering; Indian Institute of Technology; Kanpur Uttar Pradesh 208016 India
| | - Sangamesh G. Kumbar
- Institute for Regenerative Engineering; University of Connecticut Health Center; CT 06030 USA
- The Raymond and Beverly Sackler Center for Biomedical, Biological, Physical and Engineering Sciences; CT 06030 USA
- Department of Orthopedic Surgery; University of Connecticut Health Center; CT 06030 USA
- Department of Materials Science & Engineering and Biomedical Engineering; University of Connecticut; CT 06269 USA
| |
Collapse
|
239
|
Bai MY, Hu YM. Development of alpha-lipoic acid encapsulated chitosan monodispersed particles using an electrospray system: synthesis, characterisations and anti-inflammatory evaluations. J Microencapsul 2014; 31:373-81. [DOI: 10.3109/02652048.2013.863395] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
240
|
Ionically crosslinked polyelectrolyte nanocarriers: Recent advances and open problems. Curr Opin Colloid Interface Sci 2014. [DOI: 10.1016/j.cocis.2014.03.014] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
|
241
|
Yan XZ, Nijhuis AWG, van den Beucken JJJP, Both SK, Jansen JA, Leeuwenburgh SCG, Yang F. Enzymatic Control of Chitosan Gelation for Delivery of Periodontal Ligament Cells. Macromol Biosci 2014; 14:1004-14. [DOI: 10.1002/mabi.201400040] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2014] [Revised: 02/24/2014] [Indexed: 01/09/2023]
Affiliation(s)
- Xiang-Zhen Yan
- Department of Biomaterials; Radboud University Medical Center; 309 Dentistry, PO Box 9101, 6500 HB Nijmegen The Netherlands
- Department of Periodontology; Shandong University; Jinan 250012 Shandong, P. R. China
| | - Arnold W. G. Nijhuis
- Department of Biomaterials; Radboud University Medical Center; 309 Dentistry, PO Box 9101, 6500 HB Nijmegen The Netherlands
| | | | - Sanne K. Both
- Department of Biomaterials; Radboud University Medical Center; 309 Dentistry, PO Box 9101, 6500 HB Nijmegen The Netherlands
| | - John A. Jansen
- Department of Biomaterials; Radboud University Medical Center; 309 Dentistry, PO Box 9101, 6500 HB Nijmegen The Netherlands
| | - Sander C. G. Leeuwenburgh
- Department of Biomaterials; Radboud University Medical Center; 309 Dentistry, PO Box 9101, 6500 HB Nijmegen The Netherlands
| | - Fang Yang
- Department of Biomaterials; Radboud University Medical Center; 309 Dentistry, PO Box 9101, 6500 HB Nijmegen The Netherlands
| |
Collapse
|
242
|
Characterisation and drug release performance of biodegradable chitosan–graphene oxide nanocomposites. Carbohydr Polym 2014; 103:70-80. [DOI: 10.1016/j.carbpol.2013.12.012] [Citation(s) in RCA: 156] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2013] [Revised: 12/01/2013] [Accepted: 12/04/2013] [Indexed: 11/17/2022]
|
243
|
Qin Y, Xing R, Liu S, Li K, Hu L, Yu H, Chen X, Li P. Synthesis of chitosan derivative with diethyldithiocarbamate and its antifungal activity. Int J Biol Macromol 2014; 65:369-74. [PMID: 24530333 DOI: 10.1016/j.ijbiomac.2014.01.072] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2013] [Revised: 01/20/2014] [Accepted: 01/28/2014] [Indexed: 11/29/2022]
Abstract
With an aim to discover novel chitosan derivatives with enhanced antifungal properties compared with chitosan. Diethyl dithiocarbamate chitosan (EtDTCCS) was investigated and its structure was well identified. The antifungal activity of EtDTCCS against Alternaria porri (A. porri), Gloeosporium theae sinensis Miyake (G. theae sinensis), and Stemphylium solani Weber (S. solani) was tested at 0.25, 0.5, and 1.0 mg/mL, respectively. Compared with plain chitosan, EtDTCCS shows better inhibitory effect with 93.2% inhibitory index on G. theae sinensis at 1.0 mg/mL, even stronger than for polyoxin (82.5%). It was inferred derivatives of this kind may find potential applications for the treatment of various crop-threatening diseases.
Collapse
Affiliation(s)
- Yukun Qin
- Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
| | - Ronge Xing
- Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
| | - Song Liu
- Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China.
| | - Kecheng Li
- Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
| | - Linfeng Hu
- Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; School of Chemistry & Chemical Engineering, Henan Institute of Science and Technology, Xinxiang 453003, China
| | - Huahua Yu
- Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
| | - Xiaolin Chen
- Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
| | - Pengcheng Li
- Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China.
| |
Collapse
|
244
|
Gu Y, Zhang W, Wang H, Lee WY. Chitosan surface enhances the mobility, cytoplasm spreading, and phagocytosis of macrophages. Colloids Surf B Biointerfaces 2014; 117:42-50. [PMID: 24632029 DOI: 10.1016/j.colsurfb.2014.01.051] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2013] [Revised: 01/20/2014] [Accepted: 01/27/2014] [Indexed: 11/27/2022]
Abstract
A chitosan micropattern was prepared on glass by inkjet printing to visualize and compare in real-time macrophage developments on chitosan versus glass during microfluidic culture. The mobility of macrophages on chitosan was significantly higher, since the cells on glass were anchored by the development of podosomes whereas those on chitosan did not form podosomes. The phagocytosis of bacteria by macrophages was considerably more effective on chitosan because of: (1) the macrophages' higher mobility to scavenge nearby bacteria and (2) their cyotoplasm's ability to spread, re-distribute, and recover more freely to engulf the bacteria. Consequently, bacteria growth on chitosan surface was significantly reduced in the presence of macrophages in comparison to that on glass surface, as measured by surface bacteria density and effluent bacteria concentration. These findings suggest the synergistic effect of chitosan as a potential coating material on biomedical implants in promoting macrophage response upon the arrival of opportunistic bacteria.
Collapse
Affiliation(s)
- Yexin Gu
- Department of Chemical Engineering and Materials Science
| | - Wenting Zhang
- Department of Chemical Engineering and Materials Science
| | - Hongjun Wang
- Department of Chemistry, Chemical Biology and Biomedical Engineering, Stevens Institute of Technology, 1 Castle Point on Hudson, Hoboken, NJ 07030, USA
| | - Woo Y Lee
- Department of Chemical Engineering and Materials Science.
| |
Collapse
|
245
|
Kim S, Kang Y, Mercado-Pagán ÁE, Maloney WJ, Yang Y. In vitroevaluation of photo-crosslinkable chitosan-lactide hydrogels for bone tissue engineering. J Biomed Mater Res B Appl Biomater 2014; 102:1393-406. [DOI: 10.1002/jbm.b.33118] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2013] [Revised: 01/04/2014] [Accepted: 01/11/2014] [Indexed: 12/14/2022]
Affiliation(s)
- Sungwoo Kim
- Department of Orthopedic Surgery; Stanford University; Stanford California
| | - Yunqing Kang
- Department of Orthopedic Surgery; Stanford University; Stanford California
| | | | - William J. Maloney
- Department of Orthopedic Surgery; Stanford University; Stanford California
| | - Yunzhi Yang
- Department of Orthopedic Surgery; Stanford University; Stanford California
- Department of Materials Science and Engineering; Stanford University; Stanford California
| |
Collapse
|
246
|
Ma K, Cai X, Zhou Y, Zhang Z, Jiang T, Wang Y. Osteogenetic property of a biodegradable three-dimensional macroporous hydrogel coating on titanium implants fabricated via EPD. Biomed Mater 2014; 9:015008. [DOI: 10.1088/1748-6041/9/1/015008] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
247
|
Iyer SR, Udpa N, Gao Y. Chitosan selectively promotes adhesion of myoblasts over fibroblasts. J Biomed Mater Res A 2014; 103:1899-906. [DOI: 10.1002/jbm.a.35075] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2013] [Revised: 12/03/2013] [Accepted: 12/19/2013] [Indexed: 11/10/2022]
Affiliation(s)
- Shama R. Iyer
- Department of Mechanical and Aerospace Engineering; Cornell University, 220 Upson Hall, Cornell University; Ithaca New York 14853
| | - Natasha Udpa
- Department of Mechanical and Aerospace Engineering; Cornell University, 220 Upson Hall, Cornell University; Ithaca New York 14853
| | - Yingxin Gao
- Department of Mechanical and Aerospace Engineering; Cornell University, 220 Upson Hall, Cornell University; Ithaca New York 14853
| |
Collapse
|
248
|
Mellati A, Dai S, Bi J, Jin B, Zhang H. A biodegradable thermosensitive hydrogel with tuneable properties for mimicking three-dimensional microenvironments of stem cells. RSC Adv 2014. [DOI: 10.1039/c4ra12215a] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Chitosan-g-poly(N-isopropylacrylamide) was synthesized as a stem cell mimicking microenvironment. Solubility and gel mechanical strength were optimised through manipulating the grafting parameters.
Collapse
Affiliation(s)
- Amir Mellati
- School of Chemical Engineering
- The University of Adelaide
- Adelaide SA5005, Australia
| | - Sheng Dai
- School of Chemical Engineering
- The University of Adelaide
- Adelaide SA5005, Australia
| | - Jingxiu Bi
- School of Chemical Engineering
- The University of Adelaide
- Adelaide SA5005, Australia
| | - Bo Jin
- School of Chemical Engineering
- The University of Adelaide
- Adelaide SA5005, Australia
| | - Hu Zhang
- School of Chemical Engineering
- The University of Adelaide
- Adelaide SA5005, Australia
| |
Collapse
|
249
|
Ramasamy RP, Maliyekkal SM. Formation of gold nanoparticles upon chitosan leading to formation and collapse of gels. NEW J CHEM 2014. [DOI: 10.1039/c3nj00603d] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
250
|
Malatesta M, Pellicciari C, Cisterna B, Costanzo M, Galimberti V, Biggiogera M, Zancanaro C. Tracing nanoparticles and photosensitizing molecules at transmission electron microscopy by diaminobenzidine photo-oxidation. Micron 2013; 59:44-51. [PMID: 24530364 DOI: 10.1016/j.micron.2013.12.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Revised: 12/12/2013] [Accepted: 12/12/2013] [Indexed: 11/29/2022]
Abstract
During the last three decades, diaminobenzidine photo-oxidation has been applied in a variety of studies to correlate light and electron microscopy. Actually, when a fluorophore is excited by light, it can induce the oxidation of diaminobenzidine into an electron-dense osmiophilic product, which precipitates in close proximity to the fluorophore, thereby allowing its ultrastructural detection. This method has very recently been developed for two innovative applications: tracking the fate of fluorescently labeled nanoparticles in single cells, and detecting the subcellular location of photo-active molecules suitable for photodynamic therapy. These studies established that the cytochemical procedures exploiting diaminobenzidine photo-oxidation represent a reliable tool for detecting, inside the cells, with high sensitivity fluorescing molecules. These procedures are trustworthy even if the fluorescing molecules are present in very low amounts, either inside membrane-bounded organelles, or at the surface of the plasma membrane, or free in the cytosol. In particular, diaminobenzidine photo-oxidation allowed elucidating the mechanisms responsible for nanoparticles internalization in neuronal cells and for their escape from lysosomal degradation. As for the photo-active molecules, their subcellular distribution at the ultrastructural level provided direct evidence for the lethal multiorganelle photo-damage occurring after cell photo-sensitization. In addition, DAB photo-oxidized samples are suitable for the ultrastructural detection of organelle-specific molecules by post-embedding gold immunolabeling.
Collapse
Affiliation(s)
- M Malatesta
- Department of Neurological and Movement Sciences (Anatomy and Histology Section), University of Verona, Strada Le Grazie 8, 37134 Verona, Italy.
| | - C Pellicciari
- Department of Biology and Biotechnology "Lazzaro Spallanzani" (Laboratory of Cell Biology and Neurobiology), University of Pavia, Via A. Ferrata, 9, 27100 Pavia, Italy.
| | - B Cisterna
- Department of Neurological and Movement Sciences (Anatomy and Histology Section), University of Verona, Strada Le Grazie 8, 37134 Verona, Italy.
| | - M Costanzo
- Department of Neurological and Movement Sciences (Anatomy and Histology Section), University of Verona, Strada Le Grazie 8, 37134 Verona, Italy.
| | - V Galimberti
- Department of Biology and Biotechnology "Lazzaro Spallanzani" (Laboratory of Cell Biology and Neurobiology), University of Pavia, Via A. Ferrata, 9, 27100 Pavia, Italy.
| | - M Biggiogera
- Department of Biology and Biotechnology "Lazzaro Spallanzani" (Laboratory of Cell Biology and Neurobiology), University of Pavia, Via A. Ferrata, 9, 27100 Pavia, Italy.
| | - C Zancanaro
- Department of Neurological and Movement Sciences (Anatomy and Histology Section), University of Verona, Strada Le Grazie 8, 37134 Verona, Italy.
| |
Collapse
|