251
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Biocompatible core–shell electrospun nanofibers as potential application for chemotherapy against ovary cancer. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 41:217-23. [DOI: 10.1016/j.msec.2014.04.053] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2013] [Revised: 03/21/2014] [Accepted: 04/22/2014] [Indexed: 11/23/2022]
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252
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Aytac Z, Dogan SY, Tekinay T, Uyar T. Release and antibacterial activity of allyl isothiocyanate/β-cyclodextrin complex encapsulated in electrospun nanofibers. Colloids Surf B Biointerfaces 2014; 120:125-31. [PMID: 24907582 DOI: 10.1016/j.colsurfb.2014.04.006] [Citation(s) in RCA: 83] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2013] [Revised: 03/19/2014] [Accepted: 04/13/2014] [Indexed: 11/18/2022]
Abstract
Allyl isothiocyanate (AITC) is known as an efficient antibacterial agent but it has a very high volatility. Herein, AITC and AITC/β-cyclodextrin (CD)-inclusion complex (IC) incorporated in polyvinyl alcohol (PVA) nanofibers were produced via electrospinning. SEM images elucidated that incorporation of AITC and AITC/β-CD-IC into polymer matrix did not affect the bead-free fiber morphology of PVA nanofibers. (1)H-NMR and headspace GC-MS analyses revealed that very low amount of AITC was remained in PVA/AITC-NF because of the rapid evaporation of AITC during the electrospinning process. Nevertheless, much higher amount of AITC was preserved in the PVA/AITC/β-CD-IC-NF due to the CD inclusion complexation. The sustained release of AITC from nanofibers was evaluated at 30°C, 50°C and 75°C via headspace GC-MS. When compared to PVA/AITC-NF, PVA/AITC/β-CD-IC-NF has shown higher antibacterial activity against Escherichia coli and Staphylococcus aureus due to the presence of higher amount of AITC in this sample which was preserved by CD-IC.
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Affiliation(s)
- Zeynep Aytac
- Institute of Materials Science & Nanotechnology, Bilkent University, Ankara 06800, Turkey; UNAM-National Nanotechnology Research Center, Bilkent University, Ankara 06800, Turkey
| | - Sema Y Dogan
- Gazi University, Life Sciences Application and Research Center, Ankara 06830, Turkey
| | - Turgay Tekinay
- Gazi University, Life Sciences Application and Research Center, Ankara 06830, Turkey; Gazi University, Polatlı Science and Literature Faculty, Ankara 06900, Turkey
| | - Tamer Uyar
- Institute of Materials Science & Nanotechnology, Bilkent University, Ankara 06800, Turkey; UNAM-National Nanotechnology Research Center, Bilkent University, Ankara 06800, Turkey.
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253
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Wang H, Li Y, Jiang S, Zhang P, Min S, Jiang S. Synthesis, antimicrobial activity, and release of tetracycline hydrochloride loaded poly(vinyl alcohol)/soybean protein isolate/zirconium dioxide nanofibrous membranes. J Appl Polym Sci 2014. [DOI: 10.1002/app.40903] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hualin Wang
- School of Chemical Technology; Hefei University of Technology; Hefei Anhui 230009 People's Republic of China
- Anhui Institute of Agro-Products Intensive Processing Technology; Hefei Anhui 230009 People's Republic of China
| | - Yanan Li
- School of Chemical Technology; Hefei University of Technology; Hefei Anhui 230009 People's Republic of China
| | - Suwei Jiang
- School of Chemical Technology; Hefei University of Technology; Hefei Anhui 230009 People's Republic of China
| | - Peng Zhang
- School of Chemical Technology; Hefei University of Technology; Hefei Anhui 230009 People's Republic of China
| | - Sun Min
- School of Chemical Technology; Hefei University of Technology; Hefei Anhui 230009 People's Republic of China
| | - Shaotong Jiang
- School of Biotechnology and Food Engineering; Hefei University of Technology; Hefei Anhui 230009 People's Republic of China
- Anhui Institute of Agro-Products Intensive Processing Technology; Hefei Anhui 230009 People's Republic of China
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254
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Toncheva A, Spasova M, Paneva D, Manolova N, Rashkov I. Polylactide (PLA)-Based Electrospun Fibrous Materials Containing Ionic Drugs as Wound Dressing Materials: A Review. INT J POLYM MATER PO 2014. [DOI: 10.1080/00914037.2013.854240] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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255
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Gao Y, Bach Truong Y, Zhu Y, Louis Kyratzis I. Electrospun antibacterial nanofibers: Production, activity, andin vivoapplications. J Appl Polym Sci 2014. [DOI: 10.1002/app.40797] [Citation(s) in RCA: 100] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Yuan Gao
- Materials Science and Engineering; Commonwealth Scientific and Industrial Research Organization (CSIRO); Bayview Ave Clayton VIC 3168 Australia
| | - Yen Bach Truong
- Materials Science and Engineering; Commonwealth Scientific and Industrial Research Organization (CSIRO); Bayview Ave Clayton VIC 3168 Australia
| | - Yonggang Zhu
- Materials Science and Engineering; Commonwealth Scientific and Industrial Research Organization (CSIRO); Bayview Ave Clayton VIC 3168 Australia
| | - Ilias Louis Kyratzis
- Materials Science and Engineering; Commonwealth Scientific and Industrial Research Organization (CSIRO); Bayview Ave Clayton VIC 3168 Australia
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256
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257
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Abrigo M, McArthur SL, Kingshott P. Electrospun Nanofibers as Dressings for Chronic Wound Care: Advances, Challenges, and Future Prospects. Macromol Biosci 2014; 14:772-92. [DOI: 10.1002/mabi.201300561] [Citation(s) in RCA: 365] [Impact Index Per Article: 36.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2013] [Revised: 02/16/2014] [Indexed: 12/18/2022]
Affiliation(s)
- Martina Abrigo
- Faculty of Engineering and Industrial Science; Industrial Research Institute Swinburne (IRIS), Swinburne University of Technology; Hawthorn VIC 3122 Australia
| | - Sally L. McArthur
- Faculty of Engineering and Industrial Science; Industrial Research Institute Swinburne (IRIS), Swinburne University of Technology; Hawthorn VIC 3122 Australia
| | - Peter Kingshott
- Faculty of Engineering and Industrial Science; Industrial Research Institute Swinburne (IRIS), Swinburne University of Technology; Hawthorn VIC 3122 Australia
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258
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Parwe SP, Chaudhari PN, Mohite KK, Selukar BS, Nande SS, Garnaik B. Synthesis of ciprofloxacin-conjugated poly (L-lactic acid) polymer for nanofiber fabrication and antibacterial evaluation. Int J Nanomedicine 2014; 9:1463-77. [PMID: 24741303 PMCID: PMC3970946 DOI: 10.2147/ijn.s54971] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Ciprofloxacin was conjugated with polylactide (PLA) via the secondary amine group of the piperazine ring using PLA and 7-(4-(2-Chloroacetyl) piperazin-1-yl)-1-cyclopropyl-6-fluoro-1, 4-dihydro-4-oxoquinoline-3-carboxylic acid. Zinc prolinate, a biocompatible catalyst was synthesized, characterized, and used in ring opening polymerization of L-lactide. Five different kinds of OH-terminated poly(L-lactide) (two-, three-, four-, six-arm, star-shaped) homopolymers were synthesized by ring opening polymerization of L-lactide in the presence of dodecanol, glycerol, pentaerythritol, dipentaerythritol as initiator and zinc prolinate as a catalyst. The structures of the polymers and conjugates were thoroughly characterized by means of gel permeation chromatography, matrix-assisted laser desorption/ionization – time of flight mass spectrometry, and nuclear magnetic resonance spectroscopy. PLA (molecular weight =100,000) and ciprofloxacin conjugated PLA were used for fabrication of nonwoven nanofiber mat (diameter ranges; 150–400 nm) having pore size (62–102 nm) using electrospinning. The microbiological assessment shows that the release of ciprofloxacin possesses antimicrobial activity. The drug-release behavior of the mat was studied to reveal potential application as a drug delivery system. The result shows that the ciprofloxacin release rates of the PLA conjugate nonwoven nanofiber mat could be controlled by the drug loading content and the release medium. The development of a biodegradable ciprofloxacin system, based on nonwoven nanofiber mat, should be of great interest in drug delivery systems.
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Affiliation(s)
- Sharad P Parwe
- Polymer Science and Engineering Division, National Chemical Laboratory, Pune, India
| | - Priti N Chaudhari
- Polymer Science and Engineering Division, National Chemical Laboratory, Pune, India
| | - Kavita K Mohite
- Polymer Science and Engineering Division, National Chemical Laboratory, Pune, India
| | - Balaji S Selukar
- Polymer Science and Engineering Division, National Chemical Laboratory, Pune, India
| | - Smita S Nande
- Polymer Science and Engineering Division, National Chemical Laboratory, Pune, India
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259
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Sabitha M, Rajiv S. Preparation and characterization of ampicillin-incorporated electrospun polyurethane scaffolds for wound healing and infection control. POLYM ENG SCI 2014. [DOI: 10.1002/pen.23917] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- M. Sabitha
- Department of Chemistry; Anna University; Chennai Tamil Nadu India
| | - Sheeja Rajiv
- Department of Chemistry; Anna University; Chennai Tamil Nadu India
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260
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Solution blowing of chitosan/PVA hydrogel nanofiber mats. Carbohydr Polym 2014; 101:1116-21. [DOI: 10.1016/j.carbpol.2013.10.056] [Citation(s) in RCA: 108] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2013] [Revised: 10/10/2013] [Accepted: 10/11/2013] [Indexed: 11/23/2022]
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261
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Cengiz-Çallıoğlu F. Dextran nanofiber production by needleless electrospinning process. E-POLYMERS 2014. [DOI: 10.1515/epoly-2013-0021] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractThis article presents the formation of a dextran nanofibrous layer by needleless electrospinning. Optimum process parameters such as polymer solution and addition (surfactant) concentration, voltage, distance, etc. were determined to obtain uniform and smooth dextran nanofibers. It was not possible to produce nanofibers from pure dextran/water solution. Instead, solution drops were deposited on the collector; therefore, anionic surfactant was added in various concentrations to start the nanofiber production. Also, the effects of surfactant concentration on the solution properties, spinnability and fiber properties were determined. Generally, uniform and fine nanofibers were obtained from the rod electrospinning method. The value of 2 wt% surfactant concentration was chosen as the optimum concentration to produce a dextran nanofibrous layer by roller electrospinning. According to the results, spinning performance was 0.6726 g/min per meter, average fiber diameter was 162 nm, diameter uniformity coefficient was 1.03 and the nonfibrous area was 0.5%. In conclusion, this methodology resulted in the production of good product properties such as good spinnability, fine and uniform nanofibers and high fiber density.
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Affiliation(s)
- Funda Cengiz-Çallıoğlu
- 1Engineering Faculty, Textile Engineering Department, Süleyman Demirel University, 32260, Çünür, Isparta, Turkey
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262
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Natural and synthetic polymers for wounds and burns dressing. Int J Pharm 2013; 463:127-36. [PMID: 24368109 DOI: 10.1016/j.ijpharm.2013.12.015] [Citation(s) in RCA: 590] [Impact Index Per Article: 53.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2013] [Revised: 12/10/2013] [Accepted: 12/14/2013] [Indexed: 12/15/2022]
Abstract
In the last years, health care professionals faced with an increasing number of patients suffering from wounds and burns difficult to treat and heal. During the wound healing process, the dressing protects the injury and contributes to the recovery of dermal and epidermal tissues. Because their biocompatibility, biodegradability and similarity to macromolecules recognized by the human body, some natural polymers such as polysaccharides (alginates, chitin, chitosan, heparin, chondroitin), proteoglycans and proteins (collagen, gelatin, fibrin, keratin, silk fibroin, eggshell membrane) are extensively used in wounds and burns management. Obtained by electrospinning technique, some synthetic polymers like biomimetic extracellular matrix micro/nanoscale fibers based on polyglycolic acid, polylactic acid, polyacrylic acid, poly-ɛ-caprolactone, polyvinylpyrrolidone, polyvinyl alcohol, polyethylene glycol, exhibit in vivo and in vitro wound healing properties and enhance re-epithelialization. They provide an optimal microenvironment for cell proliferation, migration and differentiation, due to their biocompatibility, biodegradability, peculiar structure and good mechanical properties. Thus, synthetic polymers are used also in regenerative medicine for cartilage, bone, vascular, nerve and ligament repair and restoration. Biocompatible with fibroblasts and keratinocytes, tissue engineered skin is indicated for regeneration and remodeling of human epidermis and wound healing improving the treatment of severe skin defects or partial-thickness burn injuries.
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263
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Ninan N, Muthiah M, Park IK, Elain A, Wong TW, Thomas S, Grohens Y. Faujasites incorporated tissue engineering scaffolds for wound healing: in vitro and in vivo analysis. ACS APPLIED MATERIALS & INTERFACES 2013; 5:11194-206. [PMID: 24102066 DOI: 10.1021/am403436y] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Exploring the possibility of using inorganic faujasites in tissue engineering scaffolds is a prospective approach in regenerative medicine. Novel gelatin/hyaluronic acid (HA)/faujasite porous scaffolds with low surface energy were fabricated by lyophilization. The pore size of gelatin/HA scaffold was 50-2000 μm, whereas it was greatly reduced to 10-250 μm after incorporation of 2.4% (w/w) of faujasites in polymer matrix, GH(2.4%). Micro computed tomography analysis showed that the porosity of GH(2.4%) was 90.6%. The summative effect was ideal for growth of dermal fibroblasts and cellular attachment. XRD analysis revealed that the embedded faujasites maintained their crystallinity in the polymer matrix even though they interacted with the polymers as indicated by FT-IR analysis. Coupling with effective reinforcement of faujasites, GH(2.4%) demonstrated compression modulus of 929 ± 7 Pa and glass transition temperature of 31 ± 0.05 °C. It exhibited controlled swelling and degradation, allowing sufficient space for tissue regrowth. The latter is further supported by capability of faujasites to provide efficient oxygen supply to fibroblast cells. GH(2.4%) showed a cell viability of 91 ± 8% on NIH 3T3 fibroblast cell lines. The in vivo studies on Sprague-Dawley rats revealed its ability to enhance wound healing by accelerating re-epithelization and collagen deposition. These findings indicated its potential as excellent wound dressing material.
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Affiliation(s)
- Neethu Ninan
- Laboratoire Ingénierie des Matériaux de Bretagne, Université de Bretagne Sud , BP 92116, 56321 Lorient Cedex, France
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264
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Liakos I, Rizzello L, Scurr DJ, Pompa PP, Bayer IS, Athanassiou A. All-natural composite wound dressing films of essential oils encapsulated in sodium alginate with antimicrobial properties. Int J Pharm 2013; 463:137-45. [PMID: 24211443 DOI: 10.1016/j.ijpharm.2013.10.046] [Citation(s) in RCA: 150] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2013] [Revised: 10/18/2013] [Accepted: 10/28/2013] [Indexed: 11/26/2022]
Abstract
We present natural polymeric composite films made of essential oils (EOs) dispersed in sodium alginate (NaAlg) matrix, with remarkable anti-microbial and anti-fungal properties. Namely, elicriso italic, chamomile blue, cinnamon, lavender, tea tree, peppermint, eucalyptus, lemongrass and lemon oils were encapsulated in the films as potential active substances. Glycerol was used to induce plasticity and surfactants were added to improve the dispersion of EOs in the NaAlg matrix. The topography, chemical composition, mechanical properties, and humidity resistance of the films are presented analytically. Antimicrobial tests were conducted on films containing different percentages of EOs against Escherichia coli bacteria and Candida albicans fungi, and the films were characterized as effective or not. Such diverse types of essential oil-fortified alginate films can find many applications mainly as disposable wound dressings but also in food packaging, medical device protection and disinfection, and indoor air quality improvement materials, to name a few.
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Affiliation(s)
- Ioannis Liakos
- Nanophysics, Istituto Italiano di Tecnologia (IIT), via Morego 30, 16163 Genova, Italy.
| | - Loris Rizzello
- Center for Biomolecular Nanotechnologies, Istituto Italiano di Tecnologia @UniLe, via Barsanti, 73010 Arnesano, Lecce, Italy
| | - David J Scurr
- University of Nottingham, School of Pharmacy, Biophysics and Surface Analysis, Boots Science Building, University Park, Nottingham NG7 2RD, UK
| | - Pier Paolo Pompa
- Center for Biomolecular Nanotechnologies, Istituto Italiano di Tecnologia @UniLe, via Barsanti, 73010 Arnesano, Lecce, Italy
| | - Ilker S Bayer
- Nanophysics, Istituto Italiano di Tecnologia (IIT), via Morego 30, 16163 Genova, Italy.
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265
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Celebioglu A, Umu OCO, Tekinay T, Uyar T. Antibacterial electrospun nanofibers from triclosan/cyclodextrin inclusion complexes. Colloids Surf B Biointerfaces 2013; 116:612-9. [PMID: 24262865 DOI: 10.1016/j.colsurfb.2013.10.029] [Citation(s) in RCA: 108] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2013] [Revised: 10/11/2013] [Accepted: 10/21/2013] [Indexed: 01/14/2023]
Abstract
The electrospinning of nanofibers (NF) from cyclodextrin inclusion complexes (CD-IC) with an antibacterial agent (triclosan) was achieved without using any carrier polymeric matrix. Polymer-free triclosan/CD-IC NF were electrospun from highly concentrated (160% CD, w/w) aqueous triclosan/CD-IC suspension by using two types of chemically modified CD; hydroxypropyl-beta-cyclodextrin (HPβCD) and hydroxypropyl-gamma-cyclodextrin (HPγCD). The morphological characterization of the electrospun triclosan/CD-IC NF by SEM elucidated that the triclosan/HPβCD-IC NF and triclosan/HPγCD-IC NF were bead-free having average fiber diameter of 520 ± 250 nm and 1,100 ± 660 nm, respectively. The presence of triclosan and the formation of triclosan/CD-IC within the fiber structure were confirmed by (1)H-NMR, FTIR, XRD, DSC, and TGA studies. The initial 1:1 molar ratio of the triclosan:CD was kept for triclosan/HPβCD-IC NF after the electrospinning and whereas 0.7:1 molar ratio was observed for triclosan/HPγCD-IC NF and some uncomplexed triclosan was detected suggesting that the complexation efficiency of triclosan with HPγCD was lower than that of HPβCD. The antibacterial properties of triclosan/CD-IC NF were tested against Gram-negative (Escherichia coli) and Gram-positive (Staphylococcus aureus) bacteria. It was observed that triclosan/HPβCD-IC NF and triclosan/HPγCD-IC NF showed better antibacterial activity against both bacteria compared to uncomplexed pure triclosan.
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Affiliation(s)
- Asli Celebioglu
- Institute of Materials Science & Nanotechnology and UNAM-National Nanotechnology Research Center, Bilkent University, Ankara 06800, Turkey
| | - Ozgun C O Umu
- Institute of Materials Science & Nanotechnology and UNAM-National Nanotechnology Research Center, Bilkent University, Ankara 06800, Turkey
| | - Turgay Tekinay
- Institute of Materials Science & Nanotechnology and UNAM-National Nanotechnology Research Center, Bilkent University, Ankara 06800, Turkey; Gazi University, Life Sciences Application and Research Center, Ankara 06830, Turkey; Gazi University, Polatlı Science and Literature Faculty, Ankara 06900, Turkey
| | - Tamer Uyar
- Institute of Materials Science & Nanotechnology and UNAM-National Nanotechnology Research Center, Bilkent University, Ankara 06800, Turkey.
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266
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Unnithan AR, Gnanasekaran G, Sathishkumar Y, Lee YS, Kim CS. Electrospun antibacterial polyurethane-cellulose acetate-zein composite mats for wound dressing. Carbohydr Polym 2013; 102:884-92. [PMID: 24507360 DOI: 10.1016/j.carbpol.2013.10.070] [Citation(s) in RCA: 185] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2013] [Revised: 10/16/2013] [Accepted: 10/21/2013] [Indexed: 11/24/2022]
Abstract
In this study, an antibacterial electrospun nanofibrous scaffolds with diameters around 400-700 nm were prepared by physically blending polyurethane (PU) with two biopolymers such as cellulose acetate (CA) and zein. Here, PU was used as the foundation polymer, was blended with CA and zein to achieve desirable properties such as better hydrophilicity, excellent cell attachment, proliferation and blood clotting ability. To prevent common clinical infections, an antimicrobial agent, streptomycin sulfate was incorporated into the electrospun fibers and its antimicrobial ability against the gram negative and gram positive bacteria were examined. The interaction between fibroblasts and the PU-CA and PU-CA-zein-drug scaffolds such as viability, proliferation, and attachment were characterized. PU-CA-zein-drug composite nanoscaffold showed enhanced blood clotting ability in comparison with pristine PU nanofibers. The presence of CA and zein in the nanofiber membrane improved its hydrophilicity, bioactivity and created a moist environment for the wound, which can accelerate wound recovery.
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Affiliation(s)
- Afeesh Rajan Unnithan
- Bionano Systems Engineering Department, Chonbuk National University, Jeonju 561-756, Republic of Korea.
| | - Gopalsamy Gnanasekaran
- Department of Molecular Medicine Clinical Vaccine R&D Center, Chonnam National University, Hwasun, South Korea
| | - Yesupatham Sathishkumar
- College of Agriculture and Life Sciences, Chonbuk National University, Jeonju 561-756, Republic of Korea
| | - Yang Soo Lee
- College of Agriculture and Life Sciences, Chonbuk National University, Jeonju 561-756, Republic of Korea
| | - Cheol Sang Kim
- Bionano Systems Engineering Department, Chonbuk National University, Jeonju 561-756, Republic of Korea.
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267
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Ma B, Xie J, Jiang J, Wu J. Sandwich-type fiber scaffolds with square arrayed microwells and nanostructured cues as microskin grafts for skin regeneration. Biomaterials 2013; 35:630-41. [PMID: 24144904 DOI: 10.1016/j.biomaterials.2013.09.111] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2013] [Accepted: 09/30/2013] [Indexed: 11/19/2022]
Abstract
The paper reports the fabrication of sandwich-type scaffolds consisting of radially-aligned nanofibers at the bottom, nanofiber membranes with square arrayed microwells and nanostructured cues at the top, and microskin tissues in between as microskin grafts for use in skin regeneration. This class of nanofiber scaffolds was able to confine the microskin tissues in the square arrayed wells and simultaneously present nanotopographic cues to the cultured NIH 3T3 fibroblasts and primary rat skin cells, guiding and facilitating their migration in vitro. More importantly, we demonstrated that the sandwich-type transplants exhibited an even distribution of microskin grafts, greatly improved the 'take' rate of microskin tissues, and promoted re-epithelialization on wound in vivo. In addition, the void area in the scaffolds was well suitable for exudate drainage in wound. The sandwich-type scaffolds show great potential as microskin grafts for repairing extensive burn injuries and may provide a good solution for the treatment of acute skin defects and chronic wounds including diabetic ulcer, pressure ulcer, and venous stasis ulcer.
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Affiliation(s)
- Bing Ma
- Marshall Institute for Interdisciplinary Research and Center for Diagnostic Nanosystems, Marshall University, WV 25755, USA
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268
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Current trends in the development of wound dressings, biomaterials and devices. Pharm Pat Anal 2013; 2:341-59. [DOI: 10.4155/ppa.13.18] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Wound management covers all aspects of patient care from initial injury, treatment of infection, fluid loss, tissue regeneration, wound closure to final scar formation and remodeling. There are many wound-care products available including simple protective layers, hydrogels, metal ion-impregnated dressings and artificial skin substitutes, which facilitate surface closure. This review examines recent developments in wound dressings, biomaterials and devices. Particular attention is focused on the design and manufacture of hydrogel-based dressings, their polymeric constituents and chemical modification. Finally, topical negative pressure and hyperbaric oxygen therapy are considered. Current wound-management strategies can be expensive, time consuming and labor intensive. Progress in the multidisciplinary arena of wound care will address these issues and be of immense benefit to patients, by improving both clinical outcomes and their quality of life.
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