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Shmakov SL, Babicheva TS, Kurochkina VA, Lugovitskaya TN, Shipovskaya AB. Structural and Morphological Features of Anisotropic Chitosan Hydrogels Obtained by Ion-Induced Neutralization in a Triethanolamine Medium. Gels 2023; 9:876. [PMID: 37998966 PMCID: PMC10670621 DOI: 10.3390/gels9110876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 10/22/2023] [Accepted: 11/01/2023] [Indexed: 11/25/2023] Open
Abstract
For the first time, anisotropic hydrogel material with a highly oriented structure was obtained by the chemical reaction of polymer-analogous transformation of chitosan glycolate-chitosan base using triethanolamine (TEA) as a neutralizing reagent. Tangential bands or concentric rings, depending on the reaction conditions, represent the structural anisotropy of the hydrogel. The formation kinetics and the ratio of the positions of these periodic structures are described by the Liesegang regularities. Detailed information about the bands is given (formation time, coordinate, width, height, and formation rate). The supramolecular ordering anisotropy of the resulting material was evaluated both by the number of Liesegang bands (up to 16) and by the average values of the TEA diffusion coefficient ((15-153) × 10-10 and (4-33) × 10-10 m2/s), corresponding to the initial and final phase of the experiment, respectively. The minimum chitosan concentration required to form a spatial gel network and, accordingly, a layered anisotropic structure was estimated as 1.5 g/dL. Morphological features of the structural anisotropic ordering of chitosan Liesegang structures are visualized by scanning electron microscopy. The hemocompatibility of the material obtained was tested, and its high sorption-desorption properties were evaluated using the example of loading-release of cholecalciferol (loading degree ~35-45%, 100% desorption within 25-28 h), which was observed for a hydrophobic substance inside a chitosan-based material for the first time.
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Affiliation(s)
- Sergei L. Shmakov
- Chair of Polymers, Institute of Chemistry, Saratov State University, 83 Astrakhanskaya St., 410012 Saratov, Russia (A.B.S.)
| | - Tatiana S. Babicheva
- Chair of Polymers, Institute of Chemistry, Saratov State University, 83 Astrakhanskaya St., 410012 Saratov, Russia (A.B.S.)
| | - Valentina A. Kurochkina
- Chair of Polymers, Institute of Chemistry, Saratov State University, 83 Astrakhanskaya St., 410012 Saratov, Russia (A.B.S.)
| | - Tatiana N. Lugovitskaya
- Institute of New Materials and Technologies, Ural Federal State University, 19 Mira St., 620002 Yekaterinburg, Russia;
| | - Anna B. Shipovskaya
- Chair of Polymers, Institute of Chemistry, Saratov State University, 83 Astrakhanskaya St., 410012 Saratov, Russia (A.B.S.)
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Preparation of a biomimetic bi-layer chitosan wound dressing composed of A-PRF/sponge layer and L-arginine/nanofiber. Carbohydr Polym 2022; 292:119648. [DOI: 10.1016/j.carbpol.2022.119648] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 04/30/2022] [Accepted: 05/20/2022] [Indexed: 12/18/2022]
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Tavakoli M, Mirhaj M, Labbaf S, Varshosaz J, Taymori S, Jafarpour F, Salehi S, Abadi SAM, Sepyani A. Fabrication and evaluation of Cs/PVP sponge containing platelet-rich fibrin as a wound healing accelerator: An in vitro and in vivo study. Int J Biol Macromol 2022; 204:245-257. [PMID: 35131230 DOI: 10.1016/j.ijbiomac.2022.02.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Revised: 11/05/2021] [Accepted: 02/01/2022] [Indexed: 12/12/2022]
Abstract
Despite significant advances in surgery and postoperative care, there are still challenges in the treatment of wounds. In the current study, a freeze-dried chitosan (Cs)/polyvinylpyrrolidone (PVP) sponges containing platelet-rich fibrin (PRF at 1, 1.5 and 2% w/v) for wound dressing application is fabricated and fully characterized. Addition of 1% w/v of PRF to Cs/PVP (CS/PVP/1PRF) sample significantly increased the tensile strength (from 0.147 ± 0.005 to 0.242 ± 0.001 MPa), elastic modulus (from 0.414 ± 0.014 to 0.611 ± 0.022 MPa) and strain at break (from 53.4 ± 0.9 to 61.83 ± 1.17%) compared to Cs sample, and was hence selected as the optimal sample. The antibacterial activity of Cs/PVP/1PRF sponge wound dressing against E. coli and S. aureus was confirmed to be effective. Enzyme-linked immunosorbent assays revealed that the release of both VEGF and PDGF-AB from PRF powder, as well as PDGF-AB from Cs/PVP/1PRF sample was time-independent, but the release of VEGF from Cs/PVP/1PRF sample increased significantly with time. According to MTT and CAM assays, the Cs/PVP/1PRF sample significantly increased proliferation and angiogenic potential, respectively. Furthermore, in vivo studies demonstrated a 97.16 ± 1.55% wound closure for Cs/PVP/1PRF group after 14 days.
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Affiliation(s)
- Mohamadreza Tavakoli
- Department of Materials Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran
| | - Marjan Mirhaj
- Department of Materials Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran
| | - Sheyda Labbaf
- Department of Materials Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran.
| | - Jaleh Varshosaz
- Department of Pharmaceutics, School of Pharmacy and Novel Drug Delivery Systems Research Centre, Isfahan University of Medical Sciences, Iran.
| | - Somayeh Taymori
- Department of Pharmaceutics, School of Pharmacy and Novel Drug Delivery Systems Research Centre, Isfahan University of Medical Sciences, Iran
| | - Franoosh Jafarpour
- Department of Animal Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran
| | - Saeedeh Salehi
- Department of Materials Engineering, Islamic Azad University, Najafabad, Iran
| | | | - Azadeh Sepyani
- Department of Tissue Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran
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Mostafa AA, Mahmoud AA, Hamid MAA, Basha M, El-Okaily MS, Abdelkhalek AFA, El-Anwar MI, El Moshy S, Gibaly A, Hassan EA. An in vitro / in vivo release test of risedronate drug loaded nano-bioactive glass composite scaffolds. Int J Pharm 2021; 607:120989. [PMID: 34389417 DOI: 10.1016/j.ijpharm.2021.120989] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 08/05/2021] [Accepted: 08/06/2021] [Indexed: 01/06/2023]
Abstract
Three-dimensional (3D) matrices scaffolds play a noteworthy role in promoting cell generation and propagation. In this study, scaffolds prepared from chitosan/polyvinyl alcohol loaded with/without an osteoporotic drug (risedronate) and nano-bioactive glass (nBG) have been developed to promote healing of bone defects. The scaffolds were characterized by scanning electron microscopy (SEM), porosity test as well as mechanical strength. The pattern of drug release and ability to promote the proliferation of Saos-2osteosarcoma cells had also been reported. Osteogenic potential of the scaffolds was evaluated by testing their effect on healing critical-sized dog's mandibular bone defects. Increasing chitosan and nBG in the porous scaffolds induced decrease in drug release, increased the scaffold's strength and supported their cell proliferation, alkaline phosphatase (ALP) activities, as well as increased calcium deposition. Histological and histomorphometric results demonstrated newly formed bone trabeculae inside critical-sized mandibular defects when treated with scaffolds. Trabecular thickness, bone volume/tissue volume and the percentage of mature collagen fibers increased in groups treated with scaffolds loaded with 10% nBG and risedronate or loaded with 30% nBG with/without risedronate compared with those treated with non-loaded scaffolds and empty control groups. These findings confirmed the potential osteogenic activity of chitosan/polyvinyl alcohol-based scaffolds loaded with risedronate and nBG.
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Affiliation(s)
- Amany A Mostafa
- Nanomedicine & Tissue Engineering Lab., Medical Research Center of Excellence (MRCE), National Research Centre, Cairo, Egypt; Refractories, Ceramics & Building Materials Department (Biomaterials group), National Research Centre, Cairo, Egypt.
| | - Azza A Mahmoud
- Nanomedicine & Tissue Engineering Lab., Medical Research Center of Excellence (MRCE), National Research Centre, Cairo, Egypt; Department of Pharmaceutical Technology, Pharmaceutical and Drug Industries Research Division, National Research Centre, Cairo, Egypt; Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, Future University in Egypt, Cairo, Egypt
| | - Mohamed A Abdel Hamid
- Department of Surgery, Anesthesiology and Radiology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - Mona Basha
- Department of Pharmaceutical Technology, Pharmaceutical and Drug Industries Research Division, National Research Centre, Cairo, Egypt
| | - Mohamed S El-Okaily
- Nanomedicine & Tissue Engineering Lab., Medical Research Center of Excellence (MRCE), National Research Centre, Cairo, Egypt; Refractories, Ceramics & Building Materials Department (Biomaterials group), National Research Centre, Cairo, Egypt
| | - Abdel Fattah A Abdelkhalek
- Department of Microbiology of Supplementary General Science, Faculty of Oral & Dental Medicine, Future University in Egypt, Cairo, Egypt
| | - Mohamed I El-Anwar
- Department of Mechanical Engineering, National Research Centre, Cairo, Egypt
| | - Sara El Moshy
- Department of Oral Biology, Faculty of Dentistry, Cairo University, Cairo, Egypt
| | - Amr Gibaly
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Beni-Suef University, Beni-Suef, Egypt
| | - Elham A Hassan
- Department of Surgery, Anesthesiology and Radiology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
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Ehterami A, Masoomikarimi M, Bastami F, Jafarisani M, Alizadeh M, Mehrabi M, Salehi M. Fabrication and Characterization of Nanofibrous Poly (L-Lactic Acid)/Chitosan-Based Scaffold by Liquid-Liquid Phase Separation Technique for Nerve Tissue Engineering. Mol Biotechnol 2021; 63:818-827. [PMID: 34076821 DOI: 10.1007/s12033-021-00346-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Accepted: 05/20/2021] [Indexed: 10/21/2022]
Abstract
Fabrication method is one of the essential factors which directly affect on the properties of scaffold. Several techniques have been well established to fabricate nanofibrous scaffolds such as electrospinning. However, preparing a three-dimensional (3-D) interconnected macro-pore scaffold essential for transporting the cell metabolites and nutrients is difficult using the electrospinning method. The main aim of this study was developing a highly porous scaffold by poly (L-lactic acid) (PLLA)/chitosan blend using liquid-liquid phase separation (LLPS) technique, a fast and cost-benefit method, in order to use in nerve tissue engineering. In addition, the effect of different polymeric concentrations on morphology, mechanical properties, hydrophilicity, in vitro degradation rate and pH alteration of the scaffolds were evaluated. Moreover, cell attachment, cell viability and cell proliferation of scaffolds as candidates for nerve tissue engineering was investigated. PLLA/chitosan blend not only had desirable structural properties, porosity, hydrophilicity, mechanical properties, degradation rate and pH alteration but also provided a favorable environment for attachment, viability, and proliferation of human neuroblastoma cells, exhibiting significant potential for nerve tissue engineering applications. However, the polymeric concentration in blend fabrication had influence on both characteristics and cell responses. It concluded that PLLA/chitosan nanofibrous 3-D scaffold fabricated by LLPS method as a suitable candidate for nerve tissue engineering.
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Affiliation(s)
- Arian Ehterami
- Institute for Regenerative Medicine, University of Zurich, Zurich, Switzerland
| | - Masoomeh Masoomikarimi
- Depertment of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Farshid Bastami
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran.,Dental Research Center, Research Institute of Dental Sciences, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Moslem Jafarisani
- Department of Clinical Biochemistry, School of Medicine, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Morteza Alizadeh
- Department of Tissue Engineering, School of Medicine, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Mohsen Mehrabi
- Department of Medical Nanotechnology, School of Medicine, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Majid Salehi
- Department of Tissue Engineering, School of Medicine, Shahroud University of Medical Sciences, Shahroud, Iran. .,Sexual Health and Fertility Research Center, Shahroud University of Medical Sciences, Shahroud, Iran. .,Tissue Engineering and Stem Cells Research Center, Shahroud University of Medical Sciences, Shahroud, Iran.
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6
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Oliver-Urrutia C, Rosales Ibañez R, Flores-Merino MV, Vojtova L, Salplachta J, Čelko L, Kaiser J, Montufar EB. Lyophilized Polyvinylpyrrolidone Hydrogel for Culture of Human Oral Mucosa Stem Cells. MATERIALS 2021; 14:ma14010227. [PMID: 33466418 PMCID: PMC7796241 DOI: 10.3390/ma14010227] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 12/21/2020] [Accepted: 12/23/2020] [Indexed: 02/07/2023]
Abstract
This work shows the synthesis of a polyvinylpyrrolidone (PVP) hydrogel by heat-activated polymerization and explores the production of hydrogels with an open porous network by lyophilisation to allow the three-dimensional culture of human oral mucosa stem cells (hOMSCs). The swollen hydrogel showed a storage modulus similar to oral mucosa and elastic solid rheological behaviour without sol transition. A comprehensive characterization of porosity by scanning electron microscopy, mercury intrusion porosimetry and nano-computed tomography (with spatial resolution below 1 μm) showed that lyophilisation resulted in the heterogeneous incorporation of closed oval-like pores in the hydrogel with broad size distribution (5 to 180 μm, d50 = 65 μm). Human oral mucosa biopsies were used to isolate hOMSCs, expressing typical markers of mesenchymal stem cells in more than 95% of the cell population. Direct contact cytotoxicity assay demonstrated that PVP hydrogel have no negative effect on cell metabolic activity, allowing the culture of hOMSCs with normal fusiform morphology. Pore connectivity should be improved in future to allow cell growth in the bulk of the PVP hydrogel.
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Affiliation(s)
- Carolina Oliver-Urrutia
- Faculty of Chemistry, Autonomous University of the State of Mexico, Paseo Colon S/N, Toluca 50120, Mexico;
- Central European Institute of Technology, Brno University of Technology, Purkynova 123, 61200 Brno, Czech Republic; (L.V.); (L.Č.); (J.K.); (E.B.M.)
- Correspondence: (C.O.-U.); (J.S.); Tel.: +420-54114-9284 (J.S.)
| | - Raúl Rosales Ibañez
- Faculty of Higher Studies Iztacala, National Autonomous University of Mexico, Los Reyes Iztacala 1, Mexico City 54090, Mexico;
| | - Miriam V. Flores-Merino
- Faculty of Chemistry, Autonomous University of the State of Mexico, Paseo Colon S/N, Toluca 50120, Mexico;
| | - Lucy Vojtova
- Central European Institute of Technology, Brno University of Technology, Purkynova 123, 61200 Brno, Czech Republic; (L.V.); (L.Č.); (J.K.); (E.B.M.)
| | - Jakub Salplachta
- Central European Institute of Technology, Brno University of Technology, Purkynova 123, 61200 Brno, Czech Republic; (L.V.); (L.Č.); (J.K.); (E.B.M.)
- Correspondence: (C.O.-U.); (J.S.); Tel.: +420-54114-9284 (J.S.)
| | - Ladislav Čelko
- Central European Institute of Technology, Brno University of Technology, Purkynova 123, 61200 Brno, Czech Republic; (L.V.); (L.Č.); (J.K.); (E.B.M.)
| | - Jozef Kaiser
- Central European Institute of Technology, Brno University of Technology, Purkynova 123, 61200 Brno, Czech Republic; (L.V.); (L.Č.); (J.K.); (E.B.M.)
| | - Edgar B. Montufar
- Central European Institute of Technology, Brno University of Technology, Purkynova 123, 61200 Brno, Czech Republic; (L.V.); (L.Č.); (J.K.); (E.B.M.)
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One Step e-Beam Radiation Cross-Linking of Quaternary Hydrogels Dressings Based on Chitosan-Poly(Vinyl-Pyrrolidone)-Poly(Ethylene Glycol)-Poly(Acrylic Acid). Int J Mol Sci 2020; 21:ijms21239236. [PMID: 33287433 PMCID: PMC7731230 DOI: 10.3390/ijms21239236] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 11/29/2020] [Accepted: 11/30/2020] [Indexed: 01/26/2023] Open
Abstract
We report on the successful preparation of wet dressings hydrogels based on Chitosan-Poly(N-Vinyl-Pyrrolidone)-Poly(ethylene glycol)-Poly(acrylic acid) and Poly(ethylene oxide) by e-beam cross-linking in weakly acidic media, to be used for rapid healing and pain release of infected skin wounds. The structure and compositions of hydrogels investigated according to sol-gel and swelling studies, network parameters, as well as FTIR and XPS analyses showed the efficient interaction of the hydrogel components upon irradiation, maintaining the bonding environment while the cross-linking degree increasing with the irradiation dose and the formation of a structure with the mesh size in the range 11–67 nm. Hydrogels with gel fraction above 85% and the best swelling properties in different pH solutions were obtained for hydrogels produced with 15 kGy. The hydrogels are stable in the simulated physiological condition of an infected wound and show appropriate moisture retention capability and the water vapor transmission rate up to 272.67 g m−2 day−1, to ensure fast healing. The hydrogels proved to have a significant loading capacity of ibuprofen (IBU), being able to incorporate a therapeutic dose for the treatment of severe pains. Simultaneously, IBU was released up to 25% in the first 2h, having a release maximum after 8 h.
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Kurakula M, Koteswara Rao G. Moving polyvinyl pyrrolidone electrospun nanofibers and bioprinted scaffolds toward multidisciplinary biomedical applications. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2020.109919] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Silver-decorated mesostructured cellular silica foams as excellent antibacterial hemostatic agents for rapid and effective treatment of hemorrhage. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 115:111105. [PMID: 32600708 DOI: 10.1016/j.msec.2020.111105] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Revised: 04/21/2020] [Accepted: 05/18/2020] [Indexed: 01/19/2023]
Abstract
Uncontrolled bleeding, such as deep, narrow or irregular wound hemorrhage, has been a major cause of death in peacetime and wartime. Besides, traditional hemostatic agents are lack of antibacterial properties, which could not provide effective protection on open wound. In this paper, a novel antibacterial hemostatic agent composed of mesostructured cellular silica foams (MCF) decorated with silver ions (MCF-Ag) was synthesized by hydrothermal method. Hemorrhage wound infected with Escherichia coli was applied to evaluate its antibacterial and hemostatic performance both in vitro and in vivo. Both MCF and MCF-Ag showed excellent hemostasis in vitro and in vivo. The MCF-Ag demonstrated significant antibacterial effect. By contrast, no obvious antibacterial effect was observed from the MCF. The above results demonstrate that the MCF-Ag is an excellent antibacterial hemostatic agent with splendid water absorption and antibacterial capacity.
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Martin CA, Radhakrishnan S, Nagarajan S, Muthukoori S, Dueñas JMM, Gómez Ribelles JL, Lakshmi BS, E A K N, Gómez-Tejedor JA, Reddy MS, Sellathamby S, Rela M, Subbaraya NK. An innovative bioresorbable gelatin based 3D scaffold that maintains the stemness of adipose tissue derived stem cells and the plasticity of differentiated neurons. RSC Adv 2019; 9:14452-14464. [PMID: 35519343 PMCID: PMC9064131 DOI: 10.1039/c8ra09688k] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2018] [Accepted: 04/05/2019] [Indexed: 12/02/2022] Open
Abstract
Neural tissue engineering aims at producing a simulated environment using a matrix that is suitable to grow specialized neurons/glial cells pertaining to CNS/PNS which replace damaged or lost tissues. The primary goal of this study is to design a compatible scaffold that supports the development of neural-lineage cells which aids in neural regeneration. The fabricated, freeze-dried scaffolds consisted of biocompatible, natural and synthetic polymers: gelatin and polyvinyl pyrrolidone. Physiochemical characterization was carried out using Fourier Transform Infrared Spectroscopy (FT-IR) and Scanning Electron Microscopy (SEM) imaging. The 3D construct retains good swelling proficiency and holds the integrated structure that supports cell adhesion and proliferation. The composite of PVP-gelatin is blended in such a way that it matches the mechanical strength of the brain tissue. The cytocompatibility analysis shows that the scaffolds are compatible and permissible for the growth of both stem cells as well as differentiated neurons. A change in the ratios of the scaffold components resulted in varied sizes of pores giving diverse surface morphology, greatly influencing the properties of the neurons. However, there is no change in stem cell properties. Different types of neurons are characterized by the type of gene associated with the neurotransmitter secreted by them. The change in the neuron properties could be attributed to neuroplasticity. The plasticity of the neurons was analyzed using quantitative gene expression studies. It has been observed that the gelatin-rich construct supports the prolonged proliferation of stem cells and multiple neurons along with their plasticity.
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Affiliation(s)
- Catherine Ann Martin
- Crystal Growth Centre, Anna University Chennai India
- National Foundation for Liver Research, Global Hospitals & Health City Chennai India
| | - Subathra Radhakrishnan
- National Foundation for Liver Research, Global Hospitals & Health City Chennai India
- Department of Biomedicine, Bharathidasan University India
| | | | | | - J M Meseguer Dueñas
- Center for Biomaterials and Tissue Engineering (CBIT), Universitat Politècnica de València Camino de Vera s/n. 46022 Valencia Spain
- Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN) Spain
| | - José Luis Gómez Ribelles
- Center for Biomaterials and Tissue Engineering (CBIT), Universitat Politècnica de València Camino de Vera s/n. 46022 Valencia Spain
- Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN) Spain
| | | | | | - José Antonio Gómez-Tejedor
- Center for Biomaterials and Tissue Engineering (CBIT), Universitat Politècnica de València Camino de Vera s/n. 46022 Valencia Spain
- Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN) Spain
| | - Mettu Srinivas Reddy
- National Foundation for Liver Research, Global Hospitals & Health City Chennai India
| | | | - Mohamed Rela
- National Foundation for Liver Research, Global Hospitals & Health City Chennai India
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Casimiro MH, Gomes SR, Rodrigues G, Leal JP, Ferreira LM. Chitosan/Poly(vinylpyrrolidone) Matrices Obtained by Gamma-Irradiation for Skin Scaffolds: Characterization and Preliminary Cell Response Studies. MATERIALS 2018; 11:ma11122535. [PMID: 30551595 PMCID: PMC6316917 DOI: 10.3390/ma11122535] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Revised: 11/22/2018] [Accepted: 12/06/2018] [Indexed: 11/16/2022]
Abstract
Several studies have shown that chitosan possesses characteristics favorable for promoting dermal regeneration and accelerated wound healing. In this work we have reported the work that has been done on the development and characterization of biocompatible and biodegradable chitosan based matrices to be used as skin scaffolds. Poly(vinylpyrrrolidone) (PVP) was used as copolymer and a two steps methodology of freeze-drying and gamma irradiation was used to obtain the porous matrices. The influence of PVP content, synthesis procedure and absorbed radiation dose on matrices’ physical, chemical and structural properties was evaluated by ATR-FTIR, TGA, SEM, contact angle measurements and degradation behavior. The in vitro cellular viability and proliferation of HFFF2 fibroblast cell line was analyzed as a measure of matrices’ biocompatibility and ability to assist skin regeneration. Results show that over the studied range values, gamma-radiation dose, copolymer concentration and synthesis procedure can be used to tailor the matrices’ morphology in terms of porosity and surface roughness. Early results from biological assays evidence the biocompatibility of the prepared chitosan/PVP matrices since cells adhered to the surface of all matrices (chitosan/PVP (5%) γ-irradiated at 10 kGy presents the higher cellular viability). These features show that the resultant matrices could be a potential suitable scaffold for skin tissue regeneration.
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Affiliation(s)
- Maria Helena Casimiro
- Centro de Ciências e Tecnologias Nucleares (C2TN), Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695-066 Bobadela, LRS, Portugal.
| | - Susana R Gomes
- Centro de Ciências e Tecnologias Nucleares (C2TN), Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695-066 Bobadela, LRS, Portugal.
| | - Gabriela Rodrigues
- Centro de Ecologia, Evolução e Alterações Ambientais (cE3c) and Departamento de Biologia Animal, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal.
| | - João Paulo Leal
- Centro de Ciências e Tecnologias Nucleares (C2TN), Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695-066 Bobadela, LRS, Portugal.
- Centro de Química Estrutural (CQE), Instituto Superior Técnico, Estrada Nacional 10, 2695-066 Bobadela, LRS, Portugal.
| | - Luís M Ferreira
- Centro de Ciências e Tecnologias Nucleares (C2TN), Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695-066 Bobadela, LRS, Portugal.
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12
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Fabrication of asymmetric nanostarch reinforced Chitosan/PVP membrane and its evaluation as an antibacterial patch for in vivo wound healing application. Int J Biol Macromol 2018; 114:204-213. [PMID: 29572145 DOI: 10.1016/j.ijbiomac.2018.03.092] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Revised: 03/08/2018] [Accepted: 03/19/2018] [Indexed: 11/23/2022]
Abstract
Starch is an abundant, relatively inexpensive and ecofriendly materials which can be easily convert into nanoparticle and also as filler for the preparation of bionanocomposite for wound dressing application. Symmetric and asymmetric Chitosan(C)/PVP(P) films containing porous structure supported with nanostarch (NS) were prepared by salt leaching method for wound dressing application. Symmetric Chitosan/PVP/Nanostarch (CPNS) film with 1% and 3% wt nanostarch was prepared without coating of stearic acid whereas asymmetric Chitosan/PVP/Nanostarch-Stearic acid (CPNS-S) film was prepared by coating of stearic acid. The stearic acid coated surface possesses hydrophobic water repellent, microporous, bacterial anti adhesion property and the stearic acid uncoated hydrophilic surface shows superior antibacterial and noncytotoxicity property with highly porous character. All the symmetric and asymmetric films exhibit almost same mechanical, barrier, swelling and hemolytic property reveals that the stearic acid does not affect the physical and hemolytic property whereas the concentration of nanostarch greatly influence the above property. The reinforcement of nanostarch with chitosan and PVP was proved by TEM and SEM analysis. The CPNS1%-S film shows excellent S. aureus anti adhesion property. Furthermore, the in vivo excision-type wound healing proved that the CPNS1%-S film enhanced the healing effect and increased re-epithelialization and collagen formation.
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Synthesis and characterization of chitosan-PVP-nanocellulose composites for in-vitro wound dressing application. Int J Biol Macromol 2017; 105:111-120. [PMID: 28698076 DOI: 10.1016/j.ijbiomac.2017.07.006] [Citation(s) in RCA: 91] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Revised: 06/21/2017] [Accepted: 07/02/2017] [Indexed: 11/21/2022]
Abstract
Biocompatible Chitosan/Poly (vinyl pyrrolidone)/Nanocellulose (CPN) composites were successfully prepared by solution casting method. The prepared bionanocomposites were characterized by Transmission electron microscopy (TEM), Thermo gravimetric analysis (TGA), X-ray diffraction (XRD) and Attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR) spectra. TEM images revealed the average particle size of the nanocellulose is 6.1nm. Thermogravimetric analysis indicated that the thermal stability of the composites was decreased with increasing concentration of nanocellulose. The CPN composites were characterized for physical properties like Thickness, Barrier properties and mechanical testing. Water vapor and oxygen permeability evaluations indicated that CPN composite could maintain a moist environment over wound bed. The nanocomposite showed enhanced swelling, blood compatibility and antibacterial activity. Cytotoxicity of the composite has been analyzed in normal mouse embryonic fibroblast cells. The results have shown the CPN3% composite shows a high level of antibacterial property when compared to the other composites. The biological study suggests that CPN3% composite may be a potential candidate as a wound healing material for biomedical application.
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Li Y, Hu K, Han X, Yang Q, Xiong Y, Bai Y, Guo X, Cui Y, Yuan C, Ge H, Chen Y. Phase Separation of Silicon-Containing Polymer/Polystyrene Blends in Spin-Coated Films. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:3670-3678. [PMID: 27052643 DOI: 10.1021/acs.langmuir.6b00447] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
In this Article, two readily available polymers that contain silicon and have different surface tensions, polydimethylsiloxane (PDMS) and polyphenylsilsequioxane (PPSQ), were used to produce polymer blends with polystyrene (PS). Spin-coated thin films of the polymer blends were treated by O2 reactive-ion etching (RIE). The PS constituent was selectively removed by O2 RIE, whereas the silicon-containing phase remained because of the high etching resistance of silicon. This selective removal of PS substantially enhanced the contrast of the phase separation morphologies for better scanning electron microscope (SEM) and atomic force microscope (AFM) measurements. We investigated the effects of the silicon-containing constituents, polymer blend composition, concentration of the polymer blend solution, surface tension of the substrate, and the spin-coating speed on the ultimate morphologies of phase separation. The average domain size, ranging from 100 nm to 10 μm, was tuned through an interplay of these factors. In addition, the polymer blend film was formed on a pure organic layer, through which the aspect ratio of the phase separation morphologies was further amplified by a selective etching process. The formed nanostructures are compatible with existing nanofabrication techniques for pattern transfer onto substrates.
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Affiliation(s)
- Yang Li
- Department of Materials Science and Engineering, College of Engineering and Applied Sciences, Nanjing University , Nanjing 210093, China
- Collaborative Innovation Center of Advanced Microstructures, Nanjing 210093, China
| | - Kai Hu
- Department of Materials Science and Engineering, College of Engineering and Applied Sciences, Nanjing University , Nanjing 210093, China
- Collaborative Innovation Center of Advanced Microstructures, Nanjing 210093, China
| | - Xiao Han
- Department of Materials Science and Engineering, College of Engineering and Applied Sciences, Nanjing University , Nanjing 210093, China
- Collaborative Innovation Center of Advanced Microstructures, Nanjing 210093, China
| | - Qinyu Yang
- Department of Materials Science and Engineering, College of Engineering and Applied Sciences, Nanjing University , Nanjing 210093, China
- Collaborative Innovation Center of Advanced Microstructures, Nanjing 210093, China
| | - Yifeng Xiong
- Department of Materials Science and Engineering, College of Engineering and Applied Sciences, Nanjing University , Nanjing 210093, China
- Collaborative Innovation Center of Advanced Microstructures, Nanjing 210093, China
| | - Yuhang Bai
- Department of Materials Science and Engineering, College of Engineering and Applied Sciences, Nanjing University , Nanjing 210093, China
- Collaborative Innovation Center of Advanced Microstructures, Nanjing 210093, China
| | - Xu Guo
- Department of Materials Science and Engineering, College of Engineering and Applied Sciences, Nanjing University , Nanjing 210093, China
- Collaborative Innovation Center of Advanced Microstructures, Nanjing 210093, China
| | - Yushuang Cui
- Department of Materials Science and Engineering, College of Engineering and Applied Sciences, Nanjing University , Nanjing 210093, China
- Collaborative Innovation Center of Advanced Microstructures, Nanjing 210093, China
| | - Changsheng Yuan
- Department of Materials Science and Engineering, College of Engineering and Applied Sciences, Nanjing University , Nanjing 210093, China
- Collaborative Innovation Center of Advanced Microstructures, Nanjing 210093, China
| | - Haixiong Ge
- Department of Materials Science and Engineering, College of Engineering and Applied Sciences, Nanjing University , Nanjing 210093, China
- Collaborative Innovation Center of Advanced Microstructures, Nanjing 210093, China
| | - Yanfeng Chen
- Department of Materials Science and Engineering, College of Engineering and Applied Sciences, Nanjing University , Nanjing 210093, China
- Collaborative Innovation Center of Advanced Microstructures, Nanjing 210093, China
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15
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Luo Z, Du W, Guo P, Zheng P, Chang R, Wang J, Zeng A, Chang C, Fu Q. A porous hybrid imprinted membrane for selectively anchoring target proteins from a complex matrix. RSC Adv 2015. [DOI: 10.1039/c5ra11966a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The proposed route for the polymerization of CP/CNT/DA-MIM (A) and the recognition protocol of CP/CNT/DA-MIM (B).
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Affiliation(s)
- Zhimin Luo
- School of Pharmacy
- Xi’an Jiaotong University
- Xi’an
- PR China
| | - Wei Du
- School of Pharmacy
- Xi’an Jiaotong University
- Xi’an
- PR China
| | - Pengqi Guo
- School of Pharmacy
- Xi’an Jiaotong University
- Xi’an
- PR China
| | - Penglei Zheng
- School of Pharmacy
- Xi’an Jiaotong University
- Xi’an
- PR China
| | - Ruimiao Chang
- School of Pharmacy
- Xi’an Jiaotong University
- Xi’an
- PR China
| | - Jin Wang
- School of Pharmacy
- Xi’an Jiaotong University
- Xi’an
- PR China
| | - Aiguo Zeng
- School of Pharmacy
- Xi’an Jiaotong University
- Xi’an
- PR China
| | - Chun Chang
- School of Pharmacy
- Xi’an Jiaotong University
- Xi’an
- PR China
| | - Qiang Fu
- School of Pharmacy
- Xi’an Jiaotong University
- Xi’an
- PR China
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