51
|
Chitosan: A Potential Therapeutic Dressing Material for Wound Healing. SPRINGER SERIES ON POLYMER AND COMPOSITE MATERIALS 2016. [DOI: 10.1007/978-81-322-2511-9_8] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
|
52
|
Tonda-Turo C, Ruini F, Argentati M, Di Girolamo N, Robino P, Nebbia P, Ciardelli G. Porous CS based membranes with improved antimicrobial properties for the treatment of infected wound in veterinary applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 60:416-426. [PMID: 26706548 DOI: 10.1016/j.msec.2015.11.065] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Revised: 10/15/2015] [Accepted: 11/23/2015] [Indexed: 11/28/2022]
Abstract
Recently, much attention has been given to the use of innovative solution for the treatment of infected wounds in animals. Current applied treatments are often un-effective leading to infection propagation and animal death. Novel engineered membranes based on chitosan (CS) can be prepared to combine local antimicrobial effect, high flexibility and easy manipulation. In this work, CS crosslinked porous membranes with improved antimicrobial properties were prepared via freeze-drying technique to promote wound healing and to reduce the bacterial proliferation in infected injuries. Silver nanoparticles (AgNPs) and gentamicin sulfate (GS) were incorporated into the CS matrices to impart antibacterial properties on a wild range of strains. CS based porous membranes were tested for their physicochemical, thermal, mechanical as well as swelling and degradation behavior at physiological condition. Additionally, GS release profile was investigated, showing a moderate burst effect in the first days followed by a decreasing release rate which it was maintained for at least 56 days. Moreover, porous membranes loaded with GS or AgNPs showed good bactericidal activity against both of Gram-positive and Gram-negative bacteria. The bacterial strains used in this work were collected in chelonians after carapace injuries to better mimic the environment after trauma.
Collapse
Affiliation(s)
- C Tonda-Turo
- Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129, Turin, Italy.
| | - F Ruini
- Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129, Turin, Italy
| | - M Argentati
- Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129, Turin, Italy; Clinic for Exotic Animals, CVS, Via Sandro Giovannini 53, 00137 Rome, Italy
| | - N Di Girolamo
- Clinic for Exotic Animals, CVS, Via Sandro Giovannini 53, 00137 Rome, Italy
| | - P Robino
- Department of Veterinary Sciences, University of Turin, Largo Braccini 2, 10095 Grugliasco, Turin, Italy
| | - P Nebbia
- Department of Veterinary Sciences, University of Turin, Largo Braccini 2, 10095 Grugliasco, Turin, Italy
| | - G Ciardelli
- Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129, Turin, Italy
| |
Collapse
|
53
|
Controlled antiseptic/eosin release from chitosan-based hydrogel modified fibrous substrates. Carbohydr Polym 2015; 131:306-14. [DOI: 10.1016/j.carbpol.2015.05.057] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2014] [Revised: 05/12/2015] [Accepted: 05/13/2015] [Indexed: 12/22/2022]
|
54
|
Lomova MV, Brichkina AI, Kiryukhin MV, Vasina EN, Pavlov AM, Gorin DA, Sukhorukov GB, Antipina MN. Multilayer Capsules of Bovine Serum Albumin and Tannic Acid for Controlled Release by Enzymatic Degradation. ACS APPLIED MATERIALS & INTERFACES 2015; 7:11732-40. [PMID: 25985934 DOI: 10.1021/acsami.5b03263] [Citation(s) in RCA: 112] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
With the purpose to replace expensive and significantly cytotoxic positively charged polypeptides in biodegradable capsules formed via Layer-by-Layer (LbL) assembly, multilayers of bovine serum albumin (BSA) and tannic acid (TA) are obtained and employed for encapsulation and release of model drugs with different solubility in water: hydrophilic-tetramethylrhodamine-isothiocyanate-labeled BSA (TRITC-BSA) and hydrophobic 3,4,9,10-tetra-(hectoxy-carbonyl)-perylene (THCP). Hydrogen bonding is proposed to be predominant within thus formed BSA/TA films. The TRITC-BSA-loaded capsules comprising 6 bilayers of the protein and polyphenol are benchmarked against the shells composed of dextran sulfate (DS) and poly-l-arginine (PARG) on degradability by two proteolytic enzymes with different cleavage site specificity (i.e., α-chymotrypsin and trypsin) and toxicity for murine RAW264.7 macrophage cells. Capsules of both types possess low cytotoxicity taken at concentrations equal or below 50 capsules per cell, and evident susceptibility to α-chymotrypsin resulted in release of TRITC-BSA. While the BSA/TA-based capsules clearly display resistance to treatment with trypsin, the assemblies of DS/PARG extensively degrade. Successful encapsulation of THCP in the TRITC-BSA/TA/BSA multilayer is confirmed, and the release of the model drug is observed in response to treatment with α-chymotrypsin. The thickness, surface morphology, and enzyme-catalyzed degradation process of the BSA/TA-based films are investigated on a planar multilayer comprising 40 bilayers of the protein and polyphenol deposited on a silicon wafer. The developed BSA/TA-based capsules with a protease-specific degradation mechanism are proposed to find applications in personal care, pharmacology, and the development of drug delivery systems including those intravenous injectable and having site-specific release capability.
Collapse
Affiliation(s)
- Maria V Lomova
- †Saratov State University, 83 Astrakhanskaya Street, Saratov, 410012, Russia
- ‡Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 3 Research Link, Singapore 117602, Singapore
- §School of Engineering and Materials Science, Queen Mary University of London, Mile End Road, London E1 4NS, United Kingdom
| | - Anna I Brichkina
- ∥Institute of Molecular and Cell Biology A*STAR (Agency for Science, Technology and Research), 61 Biopolis Drive, Proteos, Singapore 138673, Singapore
| | - Maxim V Kiryukhin
- ‡Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 3 Research Link, Singapore 117602, Singapore
| | - Elena N Vasina
- ∥Institute of Molecular and Cell Biology A*STAR (Agency for Science, Technology and Research), 61 Biopolis Drive, Proteos, Singapore 138673, Singapore
| | - Anton M Pavlov
- †Saratov State University, 83 Astrakhanskaya Street, Saratov, 410012, Russia
- §School of Engineering and Materials Science, Queen Mary University of London, Mile End Road, London E1 4NS, United Kingdom
| | - Dmitry A Gorin
- †Saratov State University, 83 Astrakhanskaya Street, Saratov, 410012, Russia
| | - Gleb B Sukhorukov
- §School of Engineering and Materials Science, Queen Mary University of London, Mile End Road, London E1 4NS, United Kingdom
| | - Maria N Antipina
- ‡Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 3 Research Link, Singapore 117602, Singapore
| |
Collapse
|
55
|
Abueva CDG, Padalhin AR, Min YK, Lee BT. Preformed chitosan cryogel-biphasic calcium phosphate: a potential injectable biocomposite for pathologic fracture. J Biomater Appl 2015; 30:182-92. [DOI: 10.1177/0885328215577892] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The increasing interest in chitosan-based biomaterials stems from its desirable physicochemical properties. Although calcium phosphates have been mixed with chitosan to form injectable scaffolds, its application for bone tissue engineering has been limited and is still being explored to improve its clinical translatability. We report a biocomposite comprised of preformed chitosan cryogel with dispersed biphasic calcium phosphate that can flow under moderate pressure allowing passage through a small gauge needle, while maintaining sufficient integrity and strength during injection for gel recovery. The formed samples were characterized by Fourier transform infrared spectroscopy, scanning electron microscopy, X-ray diffraction analysis and protein adsorption measurements. Composite with 1% w/v biphasic calcium phosphate (CSG1) resulted in a homogeneous and rigid final structure. Injectable composite cryogel CSG1 (2.5 ± 0.2 N, 23G needle) exhibited good protein adsorption and biocompatibility. Results of subcutaneous implantation in rats reveal relatively high presence of polymorphonuclear cells but with no fibrous encapsulation with the composites, allowing further infiltration of cells within the sample implants. The biocomposite system presents a less-invasive delivery of bone filling material for stabilizing pathologic fractures.
Collapse
Affiliation(s)
- Celine DG Abueva
- Department of Regenerative Medicine, College of Medicine, Soonchunhyang University, Cheonan-si, Chungnam, South Korea
| | - Andrew R Padalhin
- Department of Regenerative Medicine, College of Medicine, Soonchunhyang University, Cheonan-si, Chungnam, South Korea
| | - Young-Ki Min
- Department of Physiology, College of Medicine, Soonchunhyang University, Cheonan-si, Chungnam, South Korea
| | - Byong-Taek Lee
- Department of Regenerative Medicine, College of Medicine, Soonchunhyang University, Cheonan-si, Chungnam, South Korea
- Institute of Tissue Regeneration, College of Medicine, Soonchunhyang University, Cheonan-si, Chungnam, South Korea
| |
Collapse
|
56
|
Felice F, Zambito Y, Belardinelli E, Fabiano A, Santoni T, Di Stefano R. Effect of different chitosan derivatives on in vitro scratch wound assay: a comparative study. Int J Biol Macromol 2015; 76:236-41. [PMID: 25748846 DOI: 10.1016/j.ijbiomac.2015.02.041] [Citation(s) in RCA: 78] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2014] [Revised: 02/19/2015] [Accepted: 02/20/2015] [Indexed: 11/30/2022]
Abstract
Different strategies have been developed to make the wound-healing process faster and less painful. Recently, numerous studies demonstrated the ability of chitosan to accelerate wound healing. Aim of the present study has been to evaluate the effect of different chitosan derivatives to improve wound healing process. Quaternary ammonium-chitosan conjugates with low or high molecular weight (MW) and their thiolated derivatives effect were studied on human skin fibroblasts in terms of viability and migration (scratch wound assay). Results were compared both with basal medium (untreated cells) and with a positive control (chitosan chlorhydrate). After 24h both high and low MW chitosan derivatives were non-toxic up to 10 μg/ml. The concentration of 10 μg/ml was used for wound healing experiments. High-MW quaternary ammonium-chitosan conjugates bearing thiol groups on their chains were more effective in promoting cell migration than the non-thiolated conjugates and the chitosan chlorhydrate. Moreover, they significantly improve wound healing process compared to untreated cells. According to the present in vitro preliminary results, high MW thiolated quaternary ammonium-chitosan conjugates can be considered good candidates for the management of wounds.
Collapse
Affiliation(s)
- Francesca Felice
- Cardiovascular Research Laboratory, Department of Surgical, Medical, Molecular and Critical Area Pathology, University of Pisa, via Paradisa, 2, 56124 Pisa, Italy.
| | - Ylenia Zambito
- Department of Pharmacy, University of Pisa, via Bonanno, 6, 56100 Pisa, Italy
| | - Ester Belardinelli
- Cardiovascular Research Laboratory, Department of Surgical, Medical, Molecular and Critical Area Pathology, University of Pisa, via Paradisa, 2, 56124 Pisa, Italy
| | - Angela Fabiano
- Department of Pharmacy, University of Pisa, via Bonanno, 6, 56100 Pisa, Italy
| | - Tatiana Santoni
- Cardiovascular Research Laboratory, Department of Surgical, Medical, Molecular and Critical Area Pathology, University of Pisa, via Paradisa, 2, 56124 Pisa, Italy
| | - Rossella Di Stefano
- Cardiovascular Research Laboratory, Department of Surgical, Medical, Molecular and Critical Area Pathology, University of Pisa, via Paradisa, 2, 56124 Pisa, Italy
| |
Collapse
|
57
|
Abstract
Cryogels are highly elastic three-dimensional materials consisting of a network of interconnected macropores. This unique morphology combined with high mechanical and chemical stability provides excellent mass flow properties. The matrices are synthesized at subzero temperatures from almost any gel-forming precursor. The main fields of application are in biotechnology as 3D-scaffold for cell cultivation, and tissue engineering, or bioseparation as chromatographic media for the separation and purification of biomolecules. This chapter briefly highlights the preparation, properties, and application of these materials.
Collapse
Affiliation(s)
- Senta Reichelt
- Leibniz-Institut für Oberflächenmodifizierung, Permoserstraße 15, Leipzig, 04318, Germany,
| |
Collapse
|
58
|
Li X, Li B, Ma J, Wang X, Zhang S. Development of a silk fibroin/HTCC/PVA sponge for chronic wound dressing. J BIOACT COMPAT POL 2014. [DOI: 10.1177/0883911514537731] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A sponge wound dressing comprising silk fibroin, N-(2-hydroxy)propyl-3-trimethyl ammonium chitosan chloride, and polyvinyl alcohol was developed for chronic wound healing. These composite sponges were characterized by scanning electron microscopy and Fourier transform infrared spectroscopy. The composite sponge had a fluid uptake of 80% of its weight, and the water vapor transmission rate of 2974 ± 684 g/m2/day, indicating that the sponge could keep a moist environment around the wound bed. The Wistar rats were used to evaluate these composites for the treatment of chronic wounds. Wound healing was monitored through the macroscopic and immunological analyses. Although the wound area reduction rates were similar for the composite dressings compared to the non-woven fabrics containing wax-oil, the new composite dressings were found to be capable of improving the formation of blood vessels inside the wound beds by promoting the regrowth of skin tissues. Based on these results, using aqueous composite sponges in wound dressings, instead of oil-containing fabrics, promotes healing of chronic wounds in clinical applications.
Collapse
Affiliation(s)
- Xiaomeng Li
- Advanced Biomaterials and Tissue Engineering Center, Huazhong University of Science and Technology, Wuhan, P.R. China
- Department of Biomedical Engineering, Huazhong University of Science and Technology, Wuhan, P.R. China
| | - Binghui Li
- Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, P.R. China
| | - Jun Ma
- Advanced Biomaterials and Tissue Engineering Center, Huazhong University of Science and Technology, Wuhan, P.R. China
- Department of Biomedical Engineering, Huazhong University of Science and Technology, Wuhan, P.R. China
| | - Xiaoyu Wang
- Advanced Biomaterials and Tissue Engineering Center, Huazhong University of Science and Technology, Wuhan, P.R. China
- Department of Biomedical Engineering, Huazhong University of Science and Technology, Wuhan, P.R. China
| | - Shengming Zhang
- Advanced Biomaterials and Tissue Engineering Center, Huazhong University of Science and Technology, Wuhan, P.R. China
- Department of Biomedical Engineering, Huazhong University of Science and Technology, Wuhan, P.R. China
| |
Collapse
|
59
|
Sakai S, Khanmohammadi M, Khoshfetrat AB, Taya M. Horseradish peroxidase-catalyzed formation of hydrogels from chitosan and poly(vinyl alcohol) derivatives both possessing phenolic hydroxyl groups. Carbohydr Polym 2014; 111:404-9. [PMID: 25037368 DOI: 10.1016/j.carbpol.2014.05.010] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2014] [Revised: 05/02/2014] [Accepted: 05/07/2014] [Indexed: 11/16/2022]
Abstract
Horseradish peroxidase-catalyzed cross-linking was applied to prepare hydrogels from aqueous solutions containing chitosan and poly(vinyl alcohol) derivatives both possessing phenolic hydroxyl groups (denoted as Ph-chitosan and Ph-PVA, respectively). Comparing the hydrogels prepared from the solution of 1.0% (w/v) Ph-chitosan and 3.0% (w/v) Ph-PVA and that of 3.0% (w/v) Ph-chitosan and 1.0% (w/v) Ph-PVA, the gelation time of the former hydrogel was 47 s, while was 10s longer than that of the latter one. The breaking point for the former hydrogel under stretching (114% strain) was approximately twice larger than that for the latter one. The swelling ratio of the former hydrogel in saline was about half of the latter one. Fibroblastic cells did not adhere on the former hydrogel but adhered and spread on the latter one. The growth of Escherichia coli cells was fully suppressed on the latter hydrogel during 48 h cultivation.
Collapse
Affiliation(s)
- Shinji Sakai
- Division of Chemical Engineering, Department of Materials Science and Engineering, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama-cho, Toyonaka, Osaka 560-8531, Japan.
| | - Mehdi Khanmohammadi
- Department of Chemical Engineering, Sahand University of Technology, Tabriz 51335-1996, Iran
| | - Ali Baradar Khoshfetrat
- Department of Chemical Engineering, Sahand University of Technology, Tabriz 51335-1996, Iran
| | - Masahito Taya
- Division of Chemical Engineering, Department of Materials Science and Engineering, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama-cho, Toyonaka, Osaka 560-8531, Japan
| |
Collapse
|
60
|
Dilmi A, Bartil T, Yahia N, Benneghmouche Z. Hydrogels Based on 2-Hydroxyethylmethacrylate and Chitosan: Preparation, Swelling Behavior, and Drug Delivery. INT J POLYM MATER PO 2014. [DOI: 10.1080/00914037.2013.854221] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
61
|
Moura LI, Dias AM, Leal EC, Carvalho L, de Sousa HC, Carvalho E. Chitosan-based dressings loaded with neurotensin--an efficient strategy to improve early diabetic wound healing. Acta Biomater 2014; 10:843-57. [PMID: 24121197 DOI: 10.1016/j.actbio.2013.09.040] [Citation(s) in RCA: 102] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2013] [Revised: 09/20/2013] [Accepted: 09/30/2013] [Indexed: 01/17/2023]
Abstract
One important complication of diabetes mellitus is chronic, non-healing diabetic foot ulcers (DFUs). This study aims to develop and use dressings based on chitosan derivatives for the sustained delivery of neurotensin (NT), a neuropeptide that acts as an inflammatory modulator in wound healing. Three different derivatives, namely N-carboxymethyl chitosan, 5-methyl pyrrolidinone chitosan (MPC) and N-succinyl chitosan, are presented as potential biomaterials for wound healing applications. Our results show that MPC has the best fluid handling capacity and delivery profile, also being non-toxic to Raw 264.7 and HaCaT cells. NT-loaded and non-loaded MPC dressings were applied to control/diabetic wounds to evaluate their in vitro/in vivo performance. The results show that the former induced more rapid healing (50% wound area reduction) in the early phases of wound healing in diabetic mice. A NT-loaded MPC foam also reduced expression of the inflammatory cytokine TNF-α (P<0.001) and decreased the amount of inflammatory infiltrate on day 3. On day 10 MMP-9 was reduced in diabetic skin (P<0.001), significantly increasing fibroblast migration and collagen (COL1A1, COL1A2 and COL3A1) expression and deposition. These results suggest that MPC-based dressings may work as an effective support for sustained NT release to reduce DFUs.
Collapse
|
62
|
Chen C, Duan H, Gao C, Liu M, Wu X, Wei Y, Zhang X, Liu Z. Non-covalent modification of thrombolytic agent nattokinase: simultaneous improvement of fibrinolysis activity and enzymatic stability. RSC Adv 2014. [DOI: 10.1039/c4ra02626h] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Folic acid modified chitosan (CS-FA) was synthesized and applied to modify Nattokinase (NK), a thrombolytic agent, for better fibrinolysis activity and stability. It provides great opportunities in curing cardiovascular disease (CVD), a leading cause of death globally.
Collapse
Affiliation(s)
- Chen Chen
- State Key Laboratory of Applied Organic Chemistry and Department of Chemistry
- Lanzhou University
- Lanzhou 730000, People's Republic of China
| | - Haogang Duan
- State Key Laboratory of Applied Organic Chemistry and Department of Chemistry
- Lanzhou University
- Lanzhou 730000, People's Republic of China
- The First Hospital
- Lanzhou University
| | - Chunmei Gao
- State Key Laboratory of Applied Organic Chemistry and Department of Chemistry
- Lanzhou University
- Lanzhou 730000, People's Republic of China
| | - Mingzhu Liu
- State Key Laboratory of Applied Organic Chemistry and Department of Chemistry
- Lanzhou University
- Lanzhou 730000, People's Republic of China
| | - Xin'an Wu
- The First Hospital
- Lanzhou University
- Lanzhou 730000, People's Republic of China
| | - Yuhui Wei
- The First Hospital
- Lanzhou University
- Lanzhou 730000, People's Republic of China
| | - Xinyu Zhang
- Department of Polymer and Fiber Engineering
- Auburn University
- Auburn, USA
| | - Zhen Liu
- The Department of Chemical and Biomolecular Engineering
- Johns Hopkins University
- Baltimore, USA
| |
Collapse
|
63
|
Lord MS, Tsoi BM, Farrugia BL, Simon Ting SR, Baker S, Wiesmann WP, Whitelock JM. Synthesis and characterization of water soluble biomimetic chitosans for bone and cartilage tissue regeneration. J Mater Chem B 2014; 2:6517-6526. [DOI: 10.1039/c4tb00531g] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Sulfated chitosan-arginine was synthesized to replicate growth factor-binding glycosaminoglycans. This material promoted cartilage formation from human progenitor cells while chitosan-arginine promoted bone.
Collapse
Affiliation(s)
- Megan S. Lord
- Graduate School of Biomedical Engineering
- The University of New South Wales
- Sydney, Australia
| | - Bonny M. Tsoi
- Graduate School of Biomedical Engineering
- The University of New South Wales
- Sydney, Australia
| | - Brooke L. Farrugia
- Graduate School of Biomedical Engineering
- The University of New South Wales
- Sydney, Australia
| | - S. R. Simon Ting
- Graduate School of Biomedical Engineering
- The University of New South Wales
- Sydney, Australia
| | | | | | - John M. Whitelock
- Graduate School of Biomedical Engineering
- The University of New South Wales
- Sydney, Australia
| |
Collapse
|
64
|
Sun X, Cheng L, Zhu W, Hu C, Jin R, Sun B, Shi Y, Zhang Y, Cui W. Use of ginsenoside Rg3-loaded electrospun PLGA fibrous membranes as wound cover induces healing and inhibits hypertrophic scar formation of the skin. Colloids Surf B Biointerfaces 2013; 115:61-70. [PMID: 24333554 DOI: 10.1016/j.colsurfb.2013.11.030] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2013] [Revised: 10/27/2013] [Accepted: 11/17/2013] [Indexed: 01/23/2023]
Abstract
Prevention of hypertrophic scar formation of the skin requires a complex treatment process, which mainly includes promoting skin regeneration in an early stage while inhibiting hypertrophic formation in a later stage. Electrospinning PLGA with the three-dimensional micro/nano-fibrous structure and as drugs carrier, could be used as an excellent skin repair scaffold. However, it is difficult to combine the advantage of nanofibrous membranes and drug carriers to achieve early and late treatment. In this study, Ginsenoside-Rg3 (Rg3) loaded hydrophilic poly(D,L-lactide-co-glycolide) (PLGA) electrospun fibrous membranes coated with chitosan (CS) were fabricated by combining electrospinning and pressure-driven permeation (PDP) technology. The PDP method was able to significantly improve the hydrophilicity of electrospun fibrous membranes through surface coating of the hydrophilic fibers with CS, while maintaining the Rg3 releasing rate of PLGA electrospun fibrous membranes. Experimental wounds of animal covered with PDP treated fibrous membranes completely re-epithelialized and healed 3-4 days earlier than the wounds in control groups. Scar elevation index (SEI) measurements and histologic characteristics revealed that Rg3 significantly inhibited scar formation 28 days post-surgery. Moreover, RT-PCR assays and western blot analysis revealed that at day 28 after wound induction the expression of VEGF, mRNA and Collagen Type I in the scars treated with Rg3 was decreased compared to control groups. Taken together PLGA-Rg3/CS electrospun fibrous membranes induced repair of tissue damage in the early stage and inhibited scar formation in the late stage of wound healing. These dual-functional membranes present a combined therapeutic approach for inhibiting hypertrophic scars of the skin.
Collapse
Affiliation(s)
- Xiaoming Sun
- Department of Plastic and Reconstructive Surgery, Ninth People's Hospital Affiliated to Medical School of Shanghai Jiao Tong University, 639 Zhi Zao Ju Road, Shanghai 200011, PR China
| | - Liying Cheng
- Department of Plastic and Reconstructive Surgery, Ninth People's Hospital Affiliated to Medical School of Shanghai Jiao Tong University, 639 Zhi Zao Ju Road, Shanghai 200011, PR China
| | - Wankun Zhu
- School of Biomedical Engineering and Med-X Research Institute, Shanghai Jiao Tong University, Shanghai, PR China
| | - Changmin Hu
- Orthopedic Institute, Soochow University, 708 Renmin Road, Suzhou, Jiangsu 215006, PR China; School of Biomedical Engineering and Med-X Research Institute, Shanghai Jiao Tong University, Shanghai, PR China
| | - Rong Jin
- Department of Plastic and Reconstructive Surgery, Ninth People's Hospital Affiliated to Medical School of Shanghai Jiao Tong University, 639 Zhi Zao Ju Road, Shanghai 200011, PR China
| | - Baoshan Sun
- Department of Plastic and Reconstructive Surgery, Ninth People's Hospital Affiliated to Medical School of Shanghai Jiao Tong University, 639 Zhi Zao Ju Road, Shanghai 200011, PR China
| | - Yaoming Shi
- Department of Plastic and Reconstructive Surgery, Ninth People's Hospital Affiliated to Medical School of Shanghai Jiao Tong University, 639 Zhi Zao Ju Road, Shanghai 200011, PR China
| | - Yuguang Zhang
- Department of Plastic and Reconstructive Surgery, Ninth People's Hospital Affiliated to Medical School of Shanghai Jiao Tong University, 639 Zhi Zao Ju Road, Shanghai 200011, PR China.
| | - Wenguo Cui
- Orthopedic Institute, Soochow University, 708 Renmin Road, Suzhou, Jiangsu 215006, PR China; Department of Orthopedics, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, Jiangsu 215006, PR China.
| |
Collapse
|
65
|
Takei T, Nakahara H, Tanaka S, Nishimata H, Yoshida M, Kawakami K. Effect of chitosan-gluconic acid conjugate/poly(vinyl alcohol) cryogels as wound dressing on partial-thickness wounds in diabetic rats. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2013; 24:2479-2487. [PMID: 23801501 DOI: 10.1007/s10856-013-4991-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2013] [Accepted: 06/15/2013] [Indexed: 06/02/2023]
Abstract
We previously developed chitosan cryogels from chitosan-gluconic acid conjugate without using toxic additives for wound care. In this study, we improved physiological characteristics of the previous cryogels by incorporating poly(vinyl alcohol) that also form cryogels. Mechanical strength of the cryogels was more than two times higher than that of the previous cryogels. Furthermore, the incorporation of poly(vinyl alcohol) enhanced water retention and resistance to degradation of the gels by lysozyme. The cryogels retained the favorable biological properties of the previous cryogels that they accelerate infiltration of inflammatory cells into wound sites. Time period for repairing 50 % of initial area of partial-thickness skin wound treated with the cryogels (4.0 ± 1.1 days) was shorter than those with gauze (6.5 ± 0.3 days) or a commercial hydrogel dressing (5.7 ± 0.3 days). Finally, we confirmed that incorporation of basic fibroblast growth factor into the cryogels was effective to further accelerate wound healing (2.7 ± 1.0 days). These results demonstrate that the cryogels in this study are promising for wound care.
Collapse
Affiliation(s)
- Takayuki Takei
- Department of Chemical Engineering, Graduate School of Science and Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima, 890-0065, Japan,
| | | | | | | | | | | |
Collapse
|
66
|
Moura LIF, Dias AMA, Carvalho E, de Sousa HC. Recent advances on the development of wound dressings for diabetic foot ulcer treatment--a review. Acta Biomater 2013; 9:7093-114. [PMID: 23542233 DOI: 10.1016/j.actbio.2013.03.033] [Citation(s) in RCA: 457] [Impact Index Per Article: 41.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2012] [Revised: 03/06/2013] [Accepted: 03/21/2013] [Indexed: 12/13/2022]
Abstract
Diabetic foot ulcers (DFUs) are a chronic, non-healing complication of diabetes that lead to high hospital costs and, in extreme cases, to amputation. Diabetic neuropathy, peripheral vascular disease, abnormal cellular and cytokine/chemokine activity are among the main factors that hinder diabetic wound repair. DFUs represent a current and important challenge in the development of novel and efficient wound dressings. In general, an ideal wound dressing should provide a moist wound environment, offer protection from secondary infections, remove wound exudate and promote tissue regeneration. However, no existing dressing fulfills all the requirements associated with DFU treatment and the choice of the correct dressing depends on the wound type and stage, injury extension, patient condition and the tissues involved. Currently, there are different types of commercially available wound dressings that can be used for DFU treatment which differ on their application modes, materials, shape and on the methods employed for production. Dressing materials can include natural, modified and synthetic polymers, as well as their mixtures or combinations, processed in the form of films, foams, hydrocolloids and hydrogels. Moreover, wound dressings may be employed as medicated systems, through the delivery of healing enhancers and therapeutic substances (drugs, growth factors, peptides, stem cells and/or other bioactive substances). This work reviews the state of the art and the most recent advances in the development of wound dressings for DFU treatment. Special emphasis is given to systems employing new polymeric biomaterials, and to the latest and innovative therapeutic strategies and delivery approaches.
Collapse
Affiliation(s)
- Liane I F Moura
- Center for Neuroscience and Cell Biology, University of Coimbra, 3004-517 Coimbra, Portugal
| | | | | | | |
Collapse
|
67
|
Dinu MV, Přádný M, Drăgan ES, Michálek J. Ice-templated hydrogels based on chitosan with tailored porous morphology. Carbohydr Polym 2013; 94:170-8. [DOI: 10.1016/j.carbpol.2013.01.084] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2012] [Revised: 11/14/2012] [Accepted: 01/13/2013] [Indexed: 11/17/2022]
|
68
|
Chitin, chitosan, and glycated chitosan regulate immune responses: the novel adjuvants for cancer vaccine. Clin Dev Immunol 2013; 2013:387023. [PMID: 23533454 PMCID: PMC3603646 DOI: 10.1155/2013/387023] [Citation(s) in RCA: 90] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2012] [Revised: 12/22/2012] [Accepted: 12/26/2012] [Indexed: 01/17/2023]
Abstract
With the development of cancer immunotherapy, cancer vaccine has become a novel modality for cancer treatment, and the important role of adjuvant has been realized recently. Chitin, chitosan, and their derivatives have shown their advantages as adjuvants for cancer vaccine. In this paper, the adjuvant properties of chitin and chitosan were discussed, and some detailed information about glycated chitosan and chitosan nanoparticles was also presented to illustrate the trend for future development.
Collapse
|
69
|
Henderson TMA, Ladewig K, Haylock DN, McLean KM, O'Connor AJ. Cryogels for biomedical applications. J Mater Chem B 2013; 1:2682-2695. [DOI: 10.1039/c3tb20280a] [Citation(s) in RCA: 193] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
|
70
|
In vitro evaluation of an RGD-functionalized chitosan derivative for enhanced cell adhesion. Carbohydr Polym 2012; 90:1494-500. [DOI: 10.1016/j.carbpol.2012.07.020] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2012] [Revised: 06/30/2012] [Accepted: 07/07/2012] [Indexed: 12/20/2022]
|
71
|
Kumar PTS, Lakshmanan VK, Anilkumar TV, Ramya C, Reshmi P, Unnikrishnan AG, Nair SV, Jayakumar R. Flexible and microporous chitosan hydrogel/nano ZnO composite bandages for wound dressing: in vitro and in vivo evaluation. ACS APPLIED MATERIALS & INTERFACES 2012; 4:2618-29. [PMID: 22489770 DOI: 10.1021/am300292v] [Citation(s) in RCA: 476] [Impact Index Per Article: 39.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Current wound dressings have disadvantages such as less flexibility, poor mechanical strength, lack of porosity, and a tendency for dressings to adhere onto the wound surface; in addition, a majority of the dressings did not possess antibacterial activity. Hydrogel-based wound dressings would be helpful to provide a cooling sensation and a moisture environment, as well as act as a barrier to microbes. To overcome these hassles, we have developed flexible and microporous chitosan hydrogel/nano zinc oxide composite bandages (CZBs) via the incorporation of zinc oxide nanoparticles (nZnO) into chitosan hydrogel. The prepared nanocomposite bandages were characterized using Fourier transform infrared spectroscopy (FT-IR), X-ray diffractometry (XRD), and scanning electron microscopy (SEM). In addition, swelling, degradation, blood clotting, antibacterial, cytocompatibility, cell attachment on the material, and cell infiltration into the composite bandages were evaluated. The nanocomposite bandage showed enhanced swelling, blood clotting, and antibacterial activity. Cytocompatibility of the composite bandage has been analyzed in normal human dermal fibroblast cells. Cell attachment and infiltration studies showed that the cells were found attached to the nanocomposite bandages and penetrated into the interior. Furthermore, the in vivo evaluations in Sprague-Dawley rats revealed that these nanocomposite bandages enhanced the wound healing and helped for faster re-epithelialization and collagen deposition. The obtained data strongly encourage the use of these composite bandages for burn wounds, chronic wounds, and diabetic foot ulcers.
Collapse
Affiliation(s)
- P T Sudheesh Kumar
- Amrita Centre for Nanosciences and Molecular Medicine, Amrita Institute of Medical Sciences and Research Centre, Amrita Vishwa Vidyapeetham University, Kochi-682 041, India
| | | | | | | | | | | | | | | |
Collapse
|