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Olaru M, Simionescu N, Doroftei F, David G. Strategy Based on Michael Addition Reaction for the Development of Bioinspired Multilayered and Multiphasic 3D Constructs. Polymers (Basel) 2023; 15:polym15071635. [PMID: 37050249 PMCID: PMC10096539 DOI: 10.3390/polym15071635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 03/15/2023] [Accepted: 03/22/2023] [Indexed: 03/29/2023] Open
Abstract
The high incidence of osteochondral defects has increased the interest in the development of improved repairing alternatives, with tissue engineering being considered a promising approach. The hierarchical, complex structure of osteochondral tissue requires the design of a biomimetic multilayered scaffold. Here, a multilayered and multiphasic 3D macroporous structure was achieved at subzero temperature by the Michael addition reaction of amino functionalities of collagen with acryloyl groups of a bifunctionalized poly(ε-caprolactone). This green approach has been successfully applied to crosslink layers of different composition, both for their efficient sequential formation and connection. Polyethylenimine functionalized nano-hydroxyapatite (nHApLPEI) was added to the bottom layer. The resulting hybrid cryogels were characterized by morphology, equilibrium swelling ratios, compressive strength analysis, and MTS assay. They presented good stability, integrity, and biocompatibility. The results revealed that the properties of the prepared constructs may be tuned by varying the composition, number, and thickness of the layers. The Young modulus values were between 3.5 ± 0.02 and 10.5 ± 0.6 kPa for the component layers, while for the multilayered structures they were more than 7.3 ± 0.2 kPa. The equilibrium swelling ratio varied between 4.6 and 14.2, with a value of ~10.5 for the trilayered structure, correlated with the mean pore sizes (74–230 µm).
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Affiliation(s)
- Mihaela Olaru
- “Petru Poni” Institute of Macromolecular Chemistry of Romanian Academy, 41A Gr. Ghica Voda Alley, 700487 Iasi, Romania
| | - Natalia Simionescu
- “Petru Poni” Institute of Macromolecular Chemistry of Romanian Academy, 41A Gr. Ghica Voda Alley, 700487 Iasi, Romania
| | - Florica Doroftei
- “Petru Poni” Institute of Macromolecular Chemistry of Romanian Academy, 41A Gr. Ghica Voda Alley, 700487 Iasi, Romania
| | - Geta David
- Department of Natural and Synthetic Polymers, Faculty of Chemical Engineering and Environmental Protection “Cristofor Simionescu”, “Gh. Asachi” Technical University of Iasi, 71A Bd. D. Mangeron, 700050 Iasi, Romania
- Correspondence:
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2
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Hu X, Yan L, Xu M, Tang L. Photo-degradable salecan/xanthan gum ionic gel induced by iron (III) coordination for organic dye decontamination. Int J Biol Macromol 2023; 238:124132. [PMID: 36958439 DOI: 10.1016/j.ijbiomac.2023.124132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 03/03/2023] [Accepted: 03/18/2023] [Indexed: 03/25/2023]
Abstract
As dye adsorbents with great potential, polysaccharide-based hydrogels are significantly hampered in practical application owing to intricate preparation methods, low absorption, and bad degradability. Salecan is a water-soluble extracellular polysaccharide with excellent physicochemical and biological properties. Here, salecan and xanthan gum were first used as a dual-precursors system, their mixed solution was crosslinked by Fe3+ to assemble a photo-degradable ionic gel for malachite green (MG) adsorption. Photo-degradation was done using visible light under very mild conditions, which gave rise to gel network dissolution and homogeneous solution formation. Extensive dynamic coordinate interactions between Fe3+ and polysaccharides maintained gel matrix stability and were systematically investigated. The control of water uptake, micro-structure, and rheology can be facilely implemented by tuning salecan/xanthan gum ratios. Furthermore, various parameters such as polysaccharide ratios, pHs, MG concentrations, and contact time affecting adsorption were optimized using batch experiments. Adsorption process accurately adhered to pseudo-second-order kinetic and Langmuir isotherm model, with the maximum adsorption capacity of 463.0 mg/g. Such mechanism implied monolayer chemisorptive characteristics. The gel exhibited satisfactory reusability and was recycled five times without apparent decrease in adsorption capacity. From these results, the photo-degradable Fe3+-induced salecan/xanthan gum ionic gel is an alternative and sustainable absorbent for MG removal.
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Affiliation(s)
- Xinyu Hu
- Institute of Chemical Industry of Forest Products, CAF, Key Lab. of Biomass Energy and Material, National Engineering Research Center of Low-Carbon Processing and Utilization of Forest Biomass, Key Lab. of Chemical Engineering of Forest Products, National Forestry and Grassland Administration, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing 210042, China; Research Institute of Forestry New Technology, CAF, Beijing 100091, China.
| | - Linlin Yan
- Institute of Chemical Industry of Forest Products, CAF, Key Lab. of Biomass Energy and Material, National Engineering Research Center of Low-Carbon Processing and Utilization of Forest Biomass, Key Lab. of Chemical Engineering of Forest Products, National Forestry and Grassland Administration, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing 210042, China; Research Institute of Forestry New Technology, CAF, Beijing 100091, China
| | - Man Xu
- Institute of Chemical Industry of Forest Products, CAF, Key Lab. of Biomass Energy and Material, National Engineering Research Center of Low-Carbon Processing and Utilization of Forest Biomass, Key Lab. of Chemical Engineering of Forest Products, National Forestry and Grassland Administration, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing 210042, China
| | - Lihua Tang
- Institute of Chemical Industry of Forest Products, CAF, Key Lab. of Biomass Energy and Material, National Engineering Research Center of Low-Carbon Processing and Utilization of Forest Biomass, Key Lab. of Chemical Engineering of Forest Products, National Forestry and Grassland Administration, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing 210042, China
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Jafari DA, Baspinar Y, Ustundas M, Bayraktar O, Kara HG, Sezgin C. Cytotoxicity and Gene Expression Studies of Curcumin and Piperine Loaded Nanoparticles on Breast Cancer Cells. RUSS J APPL CHEM+ 2022. [DOI: 10.1134/s1070427222010177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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4
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Highly efficient removal of antibiotic from biomedical wastewater using Fenton-like catalyst magnetic pullulan hydrogels. Carbohydr Polym 2021; 262:117951. [DOI: 10.1016/j.carbpol.2021.117951] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 02/08/2021] [Accepted: 03/11/2021] [Indexed: 12/13/2022]
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5
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Modulating the physico-mechanical properties of polyacrylamide/gelatin hydrogels for tissue engineering application. Polym Bull (Berl) 2021. [DOI: 10.1007/s00289-021-03592-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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6
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Rashki S, Asgarpour K, Tarrahimofrad H, Hashemipour M, Ebrahimi MS, Fathizadeh H, Khorshidi A, Khan H, Marzhoseyni Z, Salavati-Niasari M, Mirzaei H. Chitosan-based nanoparticles against bacterial infections. Carbohydr Polym 2021; 251:117108. [DOI: 10.1016/j.carbpol.2020.117108] [Citation(s) in RCA: 59] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Revised: 08/23/2020] [Accepted: 09/13/2020] [Indexed: 12/17/2022]
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7
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Torres-García R, Flores-Estrada J, Cauich-Rodríguez JV, Flores-Reyes M, Flores-Merino MV. Design of a polyacrylamide and gelatin hydrogel as a synthetic extracellular matrix. INT J POLYM MATER PO 2020. [DOI: 10.1080/00914037.2020.1825082] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Rocío Torres-García
- Facultad de Enfermería y Obstetricia, Universidad Autónoma del Estado de México, Toluca de Lerdo, Mexico
| | - Jaime Flores-Estrada
- Facultad de Química, Universidad Autónoma del Estado de México, Toluca de Lerdo, Mexico
| | - Juan V. Cauich-Rodríguez
- Unidad de Materiales, Centro de Investigación Científica de Yucatán A.C, Colonia Chuburná de Hidalgo, CP 97205, Mérida, Yucatán, Mexico
| | - Mario Flores-Reyes
- Facultad de Enfermería y Obstetricia, Universidad Autónoma del Estado de México, Toluca de Lerdo, Mexico
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Hu X, Yan L, Wang Y, Xu M. Microwave-assisted synthesis of nutgall tannic acid–based salecan polysaccharide hydrogel for tunable release of β-lactoglobulin. Int J Biol Macromol 2020; 161:1431-1439. [DOI: 10.1016/j.ijbiomac.2020.07.250] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 07/16/2020] [Accepted: 07/21/2020] [Indexed: 11/27/2022]
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9
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In-vitro and in-vivo study of superabsorbent PVA/Starch/g-C3N4/Ag@TiO2 NPs hydrogel membranes for wound dressing. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2020.109650] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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10
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Kumar A, Kaur H. Sprayed in-situ synthesis of polyvinyl alcohol/chitosan loaded silver nanocomposite hydrogel for improved antibacterial effects. Int J Biol Macromol 2020; 145:950-964. [PMID: 31669274 DOI: 10.1016/j.ijbiomac.2019.09.186] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 09/05/2019] [Accepted: 09/22/2019] [Indexed: 11/23/2022]
Abstract
To overcome the practical limitations of hydrogel preparations, applications and strength-based problems, the present study utilizes the use of sprayers for preparing polyvinyl alcohol/chitosan (PVA/CH) hydrogels. The particle size, morphology, stability, release studies and antibacterial activity of silver nanoparticles (AgNPs) had been studied. The particle size of AgNPs was found to be in the range of 4.59-10 nm (75 °C) with a polydispersity index (PDI) of 0.84. The morphological images exhibited inter-connecting porous structure with pore size in submicron's (<1 µm). Major infra-red spectral peaks of PVA (2946.67 cm-1; stretching of CH, 1142.72 cm-1; CO stretching) and CH (3287.49 cm-1; OH stretching, 2917.48 cm-1; CH stretching) maintain their place in PVA/CH and PVA/CH/Ag hydrogels. In addition, X-ray diffraction (XRD) pattern showed peaks with 2θ values at 38.08°, 44.29° and 64.50° corresponding to the crystal planes of (1 1 1), (2 0 0) and (2 2 0), respectively, allocated to face-centered cubic crystalline structure of AgNPs. The drug release and antibacterial studies showed a maximum release of 91.83% from hydrogels and a concentration dependent zone of inhibition (ZOI) for >24 h, respectively. Thus, the newly developed sprayed hydrogels could turn out to be a suitable dressing material for wound healing applications.
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Affiliation(s)
- Arun Kumar
- Chitkara College of Pharmacy, Chitkara University, Punjab, India.
| | - Harman Kaur
- Sachdeva College of Pharmacy, Gharuan, Punjab, India
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11
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Martín Giménez VM, Russo MG, Narda GE, Fuentes LB, Mazzei L, Gamarra-Luques C, Kassuha DE, Manucha W. Synthesis, physicochemical characterisation and biological activity of anandamide/ɛ-polycaprolactone nanoparticles obtained by electrospraying. IET Nanobiotechnol 2020; 14:86-93. [PMID: 31935683 PMCID: PMC8676047 DOI: 10.1049/iet-nbt.2019.0108] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Revised: 10/03/2019] [Accepted: 11/13/2019] [Indexed: 12/16/2022] Open
Abstract
Drug encapsulation in nanocarriers such as polymeric nanoparticles (Nps) may help to overcome the limitations associated with cannabinoids. In this study, the authors' work aimed to highlight the use of electrospraying techniques for the development of carrier Nps of anandamide (AEA), an endocannabinoid with attractive pharmacological effects but underestimated due to its unfavourable physicochemical and pharmacokinetic properties added to its undesirable effects at the level of the central nervous system. The authors characterised physicochemically and evaluated in vitro biological activity of anandamide/ɛ-polycaprolactone nanoparticles (Nps-AEA/PCL) obtained by electrospraying in epithelial cells of the human proximal tubule (HK2), to prove the utility of this method and to validate the biological effect of Nps-AEA/PCL. They obtained particles from 100 to 900 nm of diameter with a predominance of 200-400 nm. Their zeta potential was -20 ± 1.86 mV. They demonstrated the stable encapsulation of AEA in Nps-AEA/PCL, as well as its dose-dependent capacity to induce the expression of iNOS and NO levels and to decrease the Na+/K+ ATPase activity in HK2 cells. Obtaining Nps-AEA/PCL by electrospraying would represent a promising methodology for a novel AEA pharmaceutical formulation development with optimal physicochemical properties, physical stability and biological activity on HK2 cells.
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Affiliation(s)
- Virna M Martín Giménez
- Instituto de Investigaciones en Ciencias Químicas, Facultad de Ciencias Químicas y Tecnológicas, Universidad Católica de Cuyo, Av. Ignacio de la Roza 1516 (o), 5400, San Juan, Argentina
| | - Marcos G Russo
- Departamento de Química, Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, Almirante Brown 1455, D5700HGC, San Luis, Argentina
| | - Griselda E Narda
- Departamento de Química, Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, Almirante Brown 1455, D5700HGC, San Luis, Argentina
| | - Lucía B Fuentes
- Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, Chacabuco 917, D5700HOJ, San Luis, Argentina
| | - Luciana Mazzei
- Laboratorio de Farmacología Experimental Básica y Traslacional. Área de Farmacología, Departamento de Patología, Facultad de Ciencias Médicas, Universidad Nacional de Cuyo, Av. Libertador 80 - Parque General San Martín, Centro Universitario, M5500 Mendoza, Argentina
| | - Carlos Gamarra-Luques
- Instituto de Medicina y Biología Experimental de Cuyo, Consejo Nacional de Investigación Científica y Tecnológica (IMBECU-CONICET), Av. Ruiz Leal s/n - Parque Gral. San Martín, M5500 Mendoza, Argentina
| | - Diego E Kassuha
- Instituto de Investigaciones en Ciencias Químicas, Facultad de Ciencias Químicas y Tecnológicas, Universidad Católica de Cuyo, Av. Ignacio de la Roza 1516 (o), 5400, San Juan, Argentina
| | - Walter Manucha
- Laboratorio de Farmacología Experimental Básica y Traslacional. Área de Farmacología, Departamento de Patología, Facultad de Ciencias Médicas, Universidad Nacional de Cuyo, Av. Libertador 80 - Parque General San Martín, Centro Universitario, M5500 Mendoza, Argentina.
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12
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Shrimali H, Mandal UK, Nivsarkar M, Shrivastava N. Fabrication and evaluation of a medicated hydrogel film with embelin from Embelia ribes for wound healing activity. FUTURE JOURNAL OF PHARMACEUTICAL SCIENCES 2019. [DOI: 10.1186/s43094-019-0011-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
There has been huge interest among the researchers to incorporate a medicinally active compounds in hydrogel sheets for effective treatment of wound healing. This research work involves development and evaluation of medicated hydrogel sheet incorporated with embelin which has both antimicrobial and wound healing activity. Embelin was isolated from the fruits of Embelia ribes and characterized by various physical and analytical methods like melting point, UV/VIS spectroscopy, and HPTLC. The hydrogel sheets containing polyvinyl alcohol and polyethylene glycol was prepared by freeze-thaw technique, where isolated embelin was successfully incorporated within the sheet. The prepared hydrogel sheets were further characterized by in vitro drug release study, swelling capacities, gel fraction, water vapor transmission rate (WVTR), mechanical strength, and scanning electron microscopy (SEM) study. Finally, the optimized hydrogel with embelin was evaluated for its wound healing efficacy in vivo using excision wound model on Sprague–Dawley rats.
Results
The optimized hydrogel sheet had a composition of 5% PEG 400 and 10% PVA. It had acceptable in physico-chemical properties with respect to swelling capacities, gel fraction, water vapor transmission rate (WVTR), and mechanical strength The release of the drug from hydrogel followed zero order kinetics with more than 80% drug release within 12 h. The in vivo studies on the Sprague–Dawley showed faster healing process with embelin loaded hydrogels as compared to the control and market formulation.
Conclusions
Sheet hydrogel with 0.2% embelin was found to have huge potential for moist wound healing activity.
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Sarkar J, Kamble SC, Patil R, Kumar A, Gosavi SW. Gelatin interpenetration in poly N-isopropylacrylamide network reduces the compressive modulus of the scaffold: A property employed to mimic hepatic matrix stiffness. Biotechnol Bioeng 2019; 117:567-579. [PMID: 31691950 DOI: 10.1002/bit.27218] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 10/22/2019] [Accepted: 10/30/2019] [Indexed: 12/13/2022]
Abstract
The progression of liver disease from normal to cirrhotic state is characterized by modulation of the stiffness of the extracellular matrix (ECM). Mimicking this modulation in vitro scaffold could provide a better insight into hepatic cell behavior. In this study, interpenetrating poly(N-isopropylacrylamide-co-gelatin) cryogels were synthesized in 48 different compositions to yield scaffolds of different properties. It was observed that a high concentration of N-isopropylacrylamide (NIPAAm) leads to the formation of small pores while gelatin interpenetration on poly-NIPAAm framework renders porous structure. Swelling properties and porosity of the gels decreased with an increase in NIPAAm concentration owing to the increased compactness of the gels. Gelatin interpenetration relaxed the gels and enhanced these properties. An increase in gelatin concentration led to a reduction in compressive moduli indicating that gelatin interpenetration in the poly-NIPAAm network softens the cryogel. With the increase in NIPAAm concentration, the effect of gelatin interpenetration in reducing the compressive moduli expanded. The cytocompatibility studies indicated that the gels are cell-adherent and compatible with HepG2. Furthermore, biochemical and real-time polymerase chain reaction studies revealed that HepG2 and Huh-7 cells cultured on scaffolds mimicking the ECM stiffness of normal liver (1.5-2.5 kPa) exhibited optimum liver-specific functionalities. Increasing the stiffness to fibrotic (4-9 kPa) and cirrhotic (10-20 kPa) ECM decreases the functionality.
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Affiliation(s)
- Joyita Sarkar
- Department of Physics, Savitribai Phule Pune University, Pune, Maharashtra, India
| | - Swapnil C Kamble
- Department of Technology, Savitribai Phule Pune University, Pune, Maharashtra, India
| | - Rajendra Patil
- Department of Biotechnology, Savitribai Phule Pune University, Pune, Maharashtra, India
| | - Ashok Kumar
- Department of Biological Sciences and Bioengineering, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh, India.,Centre for Nanosciences, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh, India.,Centre for Environmental Sciences and Engineering, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh, India
| | - Suresh W Gosavi
- Department of Physics, Savitribai Phule Pune University, Pune, Maharashtra, India
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Kumar BYS, Isloor AM, Kumar GCM, Inamuddin, Asiri AM. Nanohydroxyapatite Reinforced Chitosan Composite Hydrogel with Tunable Mechanical and Biological Properties for Cartilage Regeneration. Sci Rep 2019; 9:15957. [PMID: 31685836 PMCID: PMC6828803 DOI: 10.1038/s41598-019-52042-7] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Accepted: 10/11/2019] [Indexed: 01/09/2023] Open
Abstract
With the continuous quest of developing hydrogel for cartilage regeneration with superior mechanobiological properties are still becoming a challenge. Chitosan (CS) hydrogels are the promising implant materials due to an analogous character of the soft tissue; however, their low mechanical strength and durability together with its lack of integrity with surrounding tissues hinder the load-bearing application. This can be solved by developing a composite chitosan hydrogel reinforced with Hydroxyapatite Nanorods (HANr). The objective of this work is to develop and characterize (physically, chemically, mechanically and biologically) the composite hydrogels loaded with different concentration of hydroxyapatite nanorod. The concentration of hydroxyapatite in the composite hydrogel was optimized and it was found that, reinforcement modifies the hydrogel network by promoting the secondary crosslinking. The compression strength could reach 1.62 ± 0.02 MPa with a significant deformation of 32% and exhibits time-dependent, rapid self-recoverable and fatigue resistant behavior based on the cyclic loading-unloading compression test. The storage modulus value can reach nearly 10 kPa which is needed for the proposed application. Besides, composite hydrogels show an excellent antimicrobial activity against Escherichia coli, Staphylococcus aureus bacteria's and Candida albicans fungi and their cytocompatibility towards L929 mouse fibroblasts provide a potential pathway to developing a composite hydrogel for cartilage regeneration.
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Affiliation(s)
- B Y Santosh Kumar
- Polymer Composites Laboratory, Department of Mechanical Engineering, National Institute of Technology Karnataka, Surathkal, Mangalore, 575 025, India
| | - Arun M Isloor
- Membrane Technology Laboratory, Department of Chemistry, National Institute of Technology Karnataka, Surathkal, Mangalore, 575 025, India.
| | - G C Mohan Kumar
- Polymer Composites Laboratory, Department of Mechanical Engineering, National Institute of Technology Karnataka, Surathkal, Mangalore, 575 025, India.
| | - Inamuddin
- Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia.
- Centre of Excellence for Advanced Materials Research, King Abdulaziz University, Jeddah, 21589, Saudi Arabia.
- Advanced Functional Materials Laboratory, Department of Applied Chemistry, Faculty of Engineering and Technology, Aligarh Muslim University, Aligarh, 202 002, India.
| | - Abdullah M Asiri
- Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
- Centre of Excellence for Advanced Materials Research, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
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Chen X, Qiu X, Hou M, Wu X, Dong Y, Ma Y, Yang L, Wei Y. Differences in Zwitterionic Sulfobetaine and Carboxybetaine Dextran-Based Hydrogels. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:1475-1482. [PMID: 30142980 DOI: 10.1021/acs.langmuir.8b01869] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Zwitterionic sulfobetaine (SB) and carboxybetaine (CB) have been extensively investigated for their noticeable antifouling properties. Both SB and CB have cationic and anionic groups in the molecule, but they differ in negatively charged groups. Molecular simulations have been conducted to investigate the different properties induced by structure changes. However, few studies have focused on the differences between SB and CB materials, especially zwitterionic polysaccharides. Two zwitterionic sulfobetaine and carboxybetaine dextran hydrogels were designed and used as models to compare their properties. Results showed that the equilibrium swelling ratios of the SB-DEX hydrogels were much higher than CB-DEX ones, and larger interior pores were observed in the SB-DEX hydrogels due to their higher hydrophilicity. The rheological storage modulus of the SB-DEX hydrogels was lower than that of CB-DEX ones as a result of higher water content of SB-DEX. These results were consistent with molecular modeling. Additionally, both CB-DEX and SB-DEX had remarkable biocompatibilities, and the in vitro release studies showed that the SB-DEX and CB-DEX hydrogels released DOX in a sustained manner under acidic condition (pH 5.0), indicating their promise as an effective drug-delivery system.
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Affiliation(s)
- Xiaofeng Chen
- Department of Chemistry, School of Science , Tianjin University , Tianjin 300354 , P. R. China
| | - Xia Qiu
- Department of Chemistry, School of Science , Tianjin University , Tianjin 300354 , P. R. China
| | - Minghong Hou
- Department of Chemistry, School of Science , Tianjin University , Tianjin 300354 , P. R. China
| | - Xiaotian Wu
- Department of Chemistry, School of Science , Tianjin University , Tianjin 300354 , P. R. China
| | - Yahao Dong
- Department of Chemistry, School of Science , Tianjin University , Tianjin 300354 , P. R. China
| | - Yansong Ma
- Department of Chemistry, School of Science , Tianjin University , Tianjin 300354 , P. R. China
| | - Lijun Yang
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine , Chinese Academy of Medical Sciences & Peking Union Medical College , Tianjin 300192 , P. R. China
| | - Yuping Wei
- Department of Chemistry, School of Science , Tianjin University , Tianjin 300354 , P. R. China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) , Tianjin 300072 , P. R. China
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Hu X, Wang Y, Zhang L, Xu M, Zhang J, Dong W. Photopatterned salecan composite hydrogel reinforced with α-Mo2C nanoparticles for cell adhesion. Carbohydr Polym 2018; 199:119-128. [DOI: 10.1016/j.carbpol.2018.07.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Revised: 06/19/2018] [Accepted: 07/03/2018] [Indexed: 11/25/2022]
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17
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Wu J, Xiao Z, Chen A, He H, He C, Shuai X, Li X, Chen S, Zhang Y, Ren B, Zheng J, Xiao J. Sulfated zwitterionic poly(sulfobetaine methacrylate) hydrogels promote complete skin regeneration. Acta Biomater 2018. [PMID: 29535009 DOI: 10.1016/j.actbio.2018.02.034] [Citation(s) in RCA: 83] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Skin wound healing is a still long-history challenging problem and impeded by the foreign-body reaction including severe inflammation response, poor neovascularization, incomplete re-epithelialization and defective ECM remodeling. Development of biocompatible polymers, in combination with specific drugs or growth factors, has been considered as a promising strategy to treat skin wounds. Significant research efforts have been made to develop poly(ethylene glycol) PEG-based polymers for wound healing, however less efforts has been paid to zwitterionic materials, some of which have demonstrated their super low-fouling property in vitro and anti-inflammatory property in vivo. Here, we synthesized ultra-low-fouling zwitterionic sulfated poly(sulfobetaine methacrylate) (polySBMA) hydrogels and applied them to full-thickness cutaneous wounds in mice. The healing effects of SBMA hydrogels on the wound closure, re-epithelialization ratio, ECM remodeling, angiogenesis, and macrophage responses during wound healing processes were histologically evaluated by in vivo experiments. Collective results indicate that SBMA hydrogels promote full-thickness excisional acute wound regeneration in mice by enhancing angiogenesis, decreasing inflammation response, and modulating macrophage polarization. Consistently, the incorporation of SBMA into PEG hydrogels also improved the overall wound healing efficiency as compared to pure PEG hydrogels. This work demonstrates zwitterionic SBMA hydrogels as promising wound dressings for treating full-thickness excisional skin wounds. STATEMENT OF SIGNIFICANCE Development of highly effective wound regeneration system is practically important for biomedical applications. Here, we synthesized ultra-low-fouling zwitterionic sulfated poly(sulfobetaine methacrylate) (polySBMA) hydrogels and applied it to full-thickness cutaneous wounds in mice, in comparison with PEG hydrogels as a control. We are the first to examine and reveal the difference between zwitterionic SBMA hydrogels and PEG hydrogels using a full-thickness excisional mice model. Overall, a series of in vivo systematic tests demonstrated that zwitterionic SBMA hydrogels exhibited superior wound healing property in almost all aspects as compared to PEG hydrogels.
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Affiliation(s)
- Jiang Wu
- School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China; College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang 325027, China
| | - Zecong Xiao
- School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China; College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang 325027, China; PCFM Lab of Ministry of Education, School of Materials Science and Engineering, Sun Yat-Sen University, Guangzhou, China
| | - Anqi Chen
- School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Huacheng He
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang 325027, China.
| | - Chaochao He
- School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Xintao Shuai
- PCFM Lab of Ministry of Education, School of Materials Science and Engineering, Sun Yat-Sen University, Guangzhou, China
| | - Xiaokun Li
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang 325027, China
| | - Shengfu Chen
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, Zhejiang 310027, China
| | - Yanxian Zhang
- Department of Chemical and Biomolecular Engineering, The University of Akron, Akron, OH 44325, USA
| | - Baiping Ren
- Department of Chemical and Biomolecular Engineering, The University of Akron, Akron, OH 44325, USA
| | - Jie Zheng
- Department of Chemical and Biomolecular Engineering, The University of Akron, Akron, OH 44325, USA; College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang 325027, China.
| | - Jian Xiao
- School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China; College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang 325027, China.
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Baspinar Y, Üstündas M, Bayraktar O, Sezgin C. Curcumin and piperine loaded zein-chitosan nanoparticles: Development and in-vitro characterisation. Saudi Pharm J 2018; 26:323-334. [PMID: 29556123 PMCID: PMC5856953 DOI: 10.1016/j.jsps.2018.01.010] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Accepted: 01/21/2018] [Indexed: 11/30/2022] Open
Abstract
Curcumin as the active compound of turmeric has antioxidative, antiinflammatory, antimicrobial and anticancer properties among others. However, its disadvantageous properties like low solubility, poor bioavailability and rapid degradation under neutral or alkaline pH conditions or when exposed to light limit its clinical application. These problems can be solved by a smart combination of using a natural enhancer like piperine and preparing nanoparticles by a proper method like electrospray. Due to these facts it was aimed in this study to develop curcumin and piperine loaded zein-chitosan nanoparticles step by step. For that purpose various formulation parameters like the concentrations of zein, curcumin, piperine and chitosan and the preparation parameters like the applied voltage and the nozzle diameter were investigated step by step. The nanoparticles were characterised by investigating their shapes, morphologies, particle sizes with help of SEM images and the cytotoxicity on neuroblastoma cells. It was succeeded to prepare curcumin and piperine loaded zein-chitosan nanoparticles having a mean particle size of approximately 500 nm and high encapsulation efficencies for curcumin (89%) and piperine (87%). Using a curcumin concentration of 10-25 µg/ml resulted in reduction of the viability of approximately 50% of the neuroblastoma cells. The here developed nanoparticle formulation consisting of solely natural compounds showed good cytotoxic effects and is a promising approach with appropriate properties for final consumption.
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Affiliation(s)
- Yücel Baspinar
- Ege University, Faculty of Pharmacy, Department of Pharmaceutical Biotechnology, 35100 Bornova-Izmir, Turkey
| | - Mehmet Üstündas
- Ege University, Faculty of Engineering, Department of Chemical Engineering, 35100 Bornova-Izmir, Turkey
| | - Oguz Bayraktar
- Ege University, Faculty of Engineering, Department of Chemical Engineering, 35100 Bornova-Izmir, Turkey
| | - Canfeza Sezgin
- Ege University, Faculty of Medicine, Medical Oncology, 35100 Bornova-Izmir, Turkey
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19
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Li X, Shu M, Li H, Gao X, Long S, Hu T, Wu C. Strong, tough and mechanically self-recoverable poly(vinyl alcohol)/alginate dual-physical double-network hydrogels with large cross-link density contrast. RSC Adv 2018; 8:16674-16689. [PMID: 35540543 PMCID: PMC9080324 DOI: 10.1039/c8ra01302k] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2018] [Accepted: 04/28/2018] [Indexed: 12/03/2022] Open
Abstract
Strong and tough poly(vinyl alcohol) (PVA)/alginate hydrogen-bonded-ionic dual-physical double-network (DN) hydrogels have been successfully prepared by a facile route of a freeze–thaw (25–25–25 °C) cycle followed by concentrated (1.0 mol L−1 of) aqueous-Ca2+ immersion of PVA/Na alginate (SA) mixed aqueous solutions. It was found that, at mole ratios of the PVA- to SA repeat units of 20/1 to 80/1, the DN gels likely evolved a semi-interpenetrating polymer network (IPN) morphology of rigid alginate networks dispersed in while interlocking with ductile PVA network to accomplish DN synergy that gave their high strength and toughness, where the high alginate rigidity originated probably from its dense cross-link induced syneresis and dispersion along crosslink-defective voids to result in little internal stress concentration. Tentatively mechanistically, as the 20/1–80/1 DN gels were stretched steadily, their mechanical response was gradually differentiated into distinct synergistic states: the sparsely hydrogen-bonded PVA served as a ductile matrix to bear small fractions of the established stresses at its large elongations; whereas the densely ionically (i.e. Ca2+) cross-linked alginate functioned as a rigid skeleton to sustain the remaining larger stresses upon its smaller local strains. Promisingly, this ductile-rigid matrix-skeleton synergistic mechanism of semi-IPN morphology may be universally extended to all A/B DN hydrogels of large A–B rigidity (or cross-link density) contrast, whether the cross-link nature of network(s) A or B is covalent, ionic, hydrogen bonded or van der Waals interacted. The strong and tough DN gels also displayed satisfactory self-recovery of viscoelastic behaviour, in that their Young's modulus and dissipated energy in the uniaxial tensile mode and dynamic storage and loss moduli in the oscillatory shear mode all recovered significantly from non-linear viscoelastic regimes despite different degrees of failure to revert to (quasi)linear viscoelasticity. Intermediate compositions enable synergised, strong-and-tough dual-physical double-network hydrogels of dispersion-induced rigid, ionic alginate-networks interlocking with global ductile, hydrogen-bonded poly(vinyl alcohol)-network.![]()
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Affiliation(s)
- Xuefeng Li
- Hubei Provincial Key Laboratory of Green Materials for Light Industry
- Hubei University of Technology
- Wuhan
- China
- Collaborative Innovation Centre of Green Light-weight Materials and Processing
| | - Mengmeng Shu
- School of Materials and Chemical Engineering
- Hubei University of Technology
- Wuhan
- China
| | - Han Li
- School of Materials and Chemical Engineering
- Hubei University of Technology
- Wuhan
- China
| | - Xiang Gao
- School of Materials and Chemical Engineering
- Hubei University of Technology
- Wuhan
- China
| | - Shijun Long
- Hubei Provincial Key Laboratory of Green Materials for Light Industry
- Hubei University of Technology
- Wuhan
- China
- Collaborative Innovation Centre of Green Light-weight Materials and Processing
| | - Tao Hu
- Hubei Provincial Key Laboratory of Green Materials for Light Industry
- Hubei University of Technology
- Wuhan
- China
- Collaborative Innovation Centre of Green Light-weight Materials and Processing
| | - Chonggang Wu
- Hubei Provincial Key Laboratory of Green Materials for Light Industry
- Hubei University of Technology
- Wuhan
- China
- Collaborative Innovation Centre of Green Light-weight Materials and Processing
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20
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Biomimetic electrospun scaffolds from main extracellular matrix components for skin tissue engineering application – The role of chondroitin sulfate and sulfated hyaluronan. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017. [DOI: 10.1016/j.msec.2017.05.005] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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21
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Drobnik J, Krucinska I, Komisarczyk A, Sporny S, Szczepanowska A, Ciosek J. Effects of electrospun scaffolds of di- O-butyrylchitin and poly-(ε-caprolactone) on wound healing. Can J Surg 2017; 60:162-171. [PMID: 28327272 DOI: 10.1503/cjs.010116] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
BACKGROUND We sought to determine the usefulness of electrospun dibutyrylchitin (DBC) or poly-(ε-caprolactone [PCL]), in wound treatment. We investigated the mechanisms of action of these polymers on wound healing. METHODS We synthesized DBC, a newly identified ester derivative of chitin, using a patented method comprising the substitution of butyryl groups at positions C-3 and C-6 in chitin molecules. We confirmed the double substitution by the butyric groups using infrared spectrometry. The fibrous scaffolds were obtained using the electrospinning method. A polypropylene net was implanted subcutaneously in the rat and served as a wound model. RESULTS Both DBC and PCL increased granulation tissue weight in the wound. In contrast to PCL, DBC did not abolish glycosaminoglycan changes in wounds. The tested samples did not impair total collagen synthesis or induce excessive fibrosis. In both PCL- and DBC-treated wounds, we observed a lower level of soluble collagen (compared with controls). The results show better hydration of the wounds in both the DBC and PCL groups. No induction of large edema formation by the tested materials was observed. These polymers induced almost identical macrophage-mediated reactions to foreign-body implantation. The implants increased the blood vessel number in a wound. CONCLUSION Both PCL and DBC could be used as scaffolds or dressings for wound treatment. The materials were safe and well tolerated by animals. As DBC did not disturb glycosaminoglycan accumulation in wounds and absorbed twice as much liquid as PCL, it can be considered superior.
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Affiliation(s)
- Jacek Drobnik
- From the Laboratory of Connective Tissue Metabolism, Medical University of Lodz, Lodz, Poland (Drobnik, Szczepanowska); the Department of Material and Commodity Sciences and Textile Metrology, Lodz University of Technology, Lodz, Poland (Krucinska, Komisarczyk); the Department of Dental Pathology, Medical University of Lodz, Lodz, Poland (Sporny); and the Department of Neuropeptides Research, Medical University of Lodz, Lodz, Poland (Ciosek);
| | - Izabella Krucinska
- From the Laboratory of Connective Tissue Metabolism, Medical University of Lodz, Lodz, Poland (Drobnik, Szczepanowska); the Department of Material and Commodity Sciences and Textile Metrology, Lodz University of Technology, Lodz, Poland (Krucinska, Komisarczyk); the Department of Dental Pathology, Medical University of Lodz, Lodz, Poland (Sporny); and the Department of Neuropeptides Research, Medical University of Lodz, Lodz, Poland (Ciosek);
| | - Agnieszka Komisarczyk
- From the Laboratory of Connective Tissue Metabolism, Medical University of Lodz, Lodz, Poland (Drobnik, Szczepanowska); the Department of Material and Commodity Sciences and Textile Metrology, Lodz University of Technology, Lodz, Poland (Krucinska, Komisarczyk); the Department of Dental Pathology, Medical University of Lodz, Lodz, Poland (Sporny); and the Department of Neuropeptides Research, Medical University of Lodz, Lodz, Poland (Ciosek);
| | - Stanislaw Sporny
- From the Laboratory of Connective Tissue Metabolism, Medical University of Lodz, Lodz, Poland (Drobnik, Szczepanowska); the Department of Material and Commodity Sciences and Textile Metrology, Lodz University of Technology, Lodz, Poland (Krucinska, Komisarczyk); the Department of Dental Pathology, Medical University of Lodz, Lodz, Poland (Sporny); and the Department of Neuropeptides Research, Medical University of Lodz, Lodz, Poland (Ciosek);
| | - Alicja Szczepanowska
- From the Laboratory of Connective Tissue Metabolism, Medical University of Lodz, Lodz, Poland (Drobnik, Szczepanowska); the Department of Material and Commodity Sciences and Textile Metrology, Lodz University of Technology, Lodz, Poland (Krucinska, Komisarczyk); the Department of Dental Pathology, Medical University of Lodz, Lodz, Poland (Sporny); and the Department of Neuropeptides Research, Medical University of Lodz, Lodz, Poland (Ciosek);
| | - Joanna Ciosek
- From the Laboratory of Connective Tissue Metabolism, Medical University of Lodz, Lodz, Poland (Drobnik, Szczepanowska); the Department of Material and Commodity Sciences and Textile Metrology, Lodz University of Technology, Lodz, Poland (Krucinska, Komisarczyk); the Department of Dental Pathology, Medical University of Lodz, Lodz, Poland (Sporny); and the Department of Neuropeptides Research, Medical University of Lodz, Lodz, Poland (Ciosek);
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22
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Ahmed AS, Mandal UK, Taher M, Susanti D, Jaffri JM. PVA-PEG physically cross-linked hydrogel film as a wound dressing: experimental design and optimization. Pharm Dev Technol 2017; 23:751-760. [DOI: 10.1080/10837450.2017.1295067] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Afnan Sh. Ahmed
- Department of Pharmaceutical Technology, Kulliyyah of Pharmacy, International Islamic University Malaysia, Bandar Indera Mahkota, Kuantan, Malaysia
| | - Uttam Kumar Mandal
- Department of Pharmaceutical Technology, Kulliyyah of Pharmacy, International Islamic University Malaysia, Bandar Indera Mahkota, Kuantan, Malaysia
| | - Muhammad Taher
- Department of Pharmaceutical Technology, Kulliyyah of Pharmacy, International Islamic University Malaysia, Bandar Indera Mahkota, Kuantan, Malaysia
| | - Deny Susanti
- Department of Chemistry, Kulliyyah of Science, International Islamic University Malaysia, Bandar Indera Mahkota, Kuantan, Malaysia
| | - Juliana Md. Jaffri
- Department of Pharmaceutical Technology, Kulliyyah of Pharmacy, International Islamic University Malaysia, Bandar Indera Mahkota, Kuantan, Malaysia
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23
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Chitosan cross-linked poly(acrylic acid) hydrogels: Drug release control and mechanism. Colloids Surf B Biointerfaces 2017; 152:252-259. [DOI: 10.1016/j.colsurfb.2017.01.008] [Citation(s) in RCA: 107] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Revised: 01/01/2017] [Accepted: 01/06/2017] [Indexed: 11/22/2022]
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24
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Bhowmick S, Mohanty S, Koul V. Fabrication of transparent quaternized PVA/silver nanocomposite hydrogel and its evaluation as an antimicrobial patch for wound care systems. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2016; 27:160. [PMID: 27638099 DOI: 10.1007/s10856-016-5772-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Accepted: 08/29/2016] [Indexed: 06/06/2023]
Abstract
Grafting of quaternary nitrogen atoms into the backbone of polymer is an efficient way of developing new generation antimicrobial polymeric wound dressing. In this study, an elastic, non-adhesive and antimicrobial transparent hydrogel based dressing has been designed, which might be helpful for routine observation of wound area without removing the dressing material along with maintaining a sterile environment for a longer period of time. Green synthesized silver nanoparticles have been loaded into the quaternized PVA hydrogel matrix to improve its antimicrobial property. Silver nanoparticles loaded quaternized PVA hydrogel showed enhanced mechanical and swelling properties compared to native quaternized PVA hydrogel. Release kinetics evaluated by atomic absorption spectroscopy revealed that the release mechanism of silver nanoparticles from the hydrogel follows Fickian diffusion. Antimicrobial efficacy of the hydrogels was evaluated by disk diffusion test on Pseudomonas aeruginosa, Staphylococcus aureus and Escherichia coli. After 96 h of release in phosphate buffer, the growth inhibition zone created by silver nanoparticless loaded quaternized PVA hydrogel is comparable to that created by ampicillin. These observations assert that the silver nanoparticles loaded quaternized PVA hydrogel acts as a reservoir of silver nanoparticles, which helps in maintaining a sterile environment for longer time duration by releasing Ag nanocrystallite in sustained manner.
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Affiliation(s)
- Sirsendu Bhowmick
- Max Bergmann Center of Biomaterials, Technische Universität Dresden, Budapester Straße 27, Dresden, 01069, Germany
- Centre for Biomedical Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, 110016, India
- Biomedical Engineering Unit, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Sujata Mohanty
- Stem Cell Facility, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Veena Koul
- Centre for Biomedical Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, 110016, India.
- Biomedical Engineering Unit, All India Institute of Medical Sciences, New Delhi, 110029, India.
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25
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Kim J, Hwang J, Seo Y, Jo Y, Son J, Paik T, Choi J. Engineered self-expander hydrogel for sustained release of drug molecules. J IND ENG CHEM 2016. [DOI: 10.1016/j.jiec.2016.07.033] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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26
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Feng W, Geng Z, Li Z, Cui Z, Zhu S, Liang Y, Liu Y, Wang R, Yang X. Controlled release behaviour and antibacterial effects of antibiotic-loaded titania nanotubes. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 62:105-12. [DOI: 10.1016/j.msec.2016.01.046] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Revised: 01/09/2016] [Accepted: 01/19/2016] [Indexed: 11/27/2022]
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27
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Synthesis and characterization of macroporous sodium alginate-g-poly(AA-co-DMAPMA) hydrogel. Polym Bull (Berl) 2016. [DOI: 10.1007/s00289-016-1653-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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28
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Bhowmick S, Scharnweber D, Koul V. Co-cultivation of keratinocyte-human mesenchymal stem cell (hMSC) on sericin loaded electrospun nanofibrous composite scaffold (cationic gelatin/hyaluronan/chondroitin sulfate) stimulates epithelial differentiation in hMSCs: In vitro study. Biomaterials 2016; 88:83-96. [PMID: 26946262 DOI: 10.1016/j.biomaterials.2016.02.034] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Revised: 02/22/2016] [Accepted: 02/22/2016] [Indexed: 12/21/2022]
Abstract
Fortifying the scaffold with bioactive molecules and glycosaminoglycans (GAGs), is an efficient way to design new generation tissue engineered biomaterials. In this study, we evaluated the synergistic effect of electrospun nanofibrous composite scaffold (cationic gelatin/hyaluronan/chondroitin sulfate) loaded with sericin and, contact co-culture of human mesenchymal stem cells (hMSCs)-keratinocytes on hMSCs' differentiation towards epithelial lineage. Cationic gelatin is prepared with one step novel synthesis process by grafting quaternary ammonium salts to the backbone of gelatin. Release kinetics studies showed that Fickian diffusion is the major release mechanism for both GAGs and sericin/gelatin. In vitro biocompatibility of the electrospun scaffold was evaluated in terms of LDH and DNA quantification assay on human foreskin fibroblast, human keratinocyte and hMSC. Significant proliferation (∼ 4-6 fold) was detected after culturing all three cell on the electrospun scaffold containing sericin. After 5 days of contact co-culture, results revealed that electrospun scaffold containing sericin promote epithelial differentiation of hMSC in terms of several protein markers (keratin 14, ΔNp63α and Pan-cytokeratin) and gene expression of some dermal proteins (keratin 14, ΔNp63α). Findings of this study will foster the progress of current skin tissue engineering scaffolds by understanding the skin regeneration and wound healing process.
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Affiliation(s)
- Sirsendu Bhowmick
- Max Bergmann Center of Biomaterials, Technische Universität Dresden, Budapester Straße 27, 01069 Dresden, Germany; Centre for Biomedical Engineering, Indian Institute of Technology Delhi, Hauz Khas, 110016 New Delhi, India
| | - Dieter Scharnweber
- Max Bergmann Center of Biomaterials, Technische Universität Dresden, Budapester Straße 27, 01069 Dresden, Germany
| | - Veena Koul
- Centre for Biomedical Engineering, Indian Institute of Technology Delhi, Hauz Khas, 110016 New Delhi, India.
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29
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Jaiswal M, Koul V, Dinda AK. In vitroandin vivoinvestigational studies of a nanocomposite-hydrogel-based dressing with a silver-coated chitosan wafer for full-thickness skin wounds. J Appl Polym Sci 2016. [DOI: 10.1002/app.43472] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Maneesh Jaiswal
- Centre for Biomedical Engineering; Indian Institute of Technology; New Delhi India 110016
| | - Veena Koul
- Centre for Biomedical Engineering; Indian Institute of Technology; New Delhi India 110016
| | - Amit Kr. Dinda
- Department of Pathology; All India Institute of Medical Sciences; New Delhi India 110029
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30
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Bhowmick S, Koul V. Assessment of PVA/silver nanocomposite hydrogel patch as antimicrobial dressing scaffold: Synthesis, characterization and biological evaluation. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 59:109-119. [DOI: 10.1016/j.msec.2015.10.003] [Citation(s) in RCA: 86] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2015] [Revised: 09/14/2015] [Accepted: 10/01/2015] [Indexed: 12/25/2022]
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31
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Chen H, Yang F, Hu R, Zhang M, Ren B, Gong X, Ma J, Jiang B, Chen Q, Zheng J. A comparative study of the mechanical properties of hybrid double-network hydrogels in swollen and as-prepared states. J Mater Chem B 2016; 4:5814-5824. [DOI: 10.1039/c6tb01511e] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Significant efforts have been made to develop very tough hydrogels at both swelling and as-prepared states towards many scientific and industrial applications.
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Affiliation(s)
- Hong Chen
- Department of Chemical and Biomolecular Engineering
- The University of Akron
- Akron
- USA
| | - Fengyu Yang
- Department of Chemical and Biomolecular Engineering
- The University of Akron
- Akron
- USA
| | - Rundong Hu
- Department of Chemical and Biomolecular Engineering
- The University of Akron
- Akron
- USA
| | - Mingzhen Zhang
- Department of Chemical and Biomolecular Engineering
- The University of Akron
- Akron
- USA
| | - Baiping Ren
- Department of Chemical and Biomolecular Engineering
- The University of Akron
- Akron
- USA
| | - Xiong Gong
- Department of Polymer Engineering
- The University of Akron
- Akron
- USA
| | - Jie Ma
- Department of Chemical and Biomolecular Engineering
- The University of Akron
- Akron
- USA
- State Key Laboratory of Pollution Control and Resource Reuse
| | - Binbo Jiang
- Department of Chemical and Biomolecular Engineering
- The University of Akron
- Akron
- USA
- College of Chemical and Biological Engineering
| | - Qiang Chen
- School of Material Science and Engineering
- Henan Polytechnic University
- Jiaozuo 454003
- China
| | - Jie Zheng
- Department of Chemical and Biomolecular Engineering
- The University of Akron
- Akron
- USA
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32
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Kumar A, Jaiswal M. Design andin vitroinvestigation of nanocomposite hydrogel basedin situspray dressing for chronic wounds and synthesis of silver nanoparticles using green chemistry. J Appl Polym Sci 2015. [DOI: 10.1002/app.43260] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Arun Kumar
- Department of Pharmacy; Jaypee University of Information Technology (JUIT); Waknaghat Solan, Himachal Pradesh 173234 India
| | - Maneesh Jaiswal
- Department of Pharmacy; Jaypee University of Information Technology (JUIT); Waknaghat Solan, Himachal Pradesh 173234 India
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33
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Li C, Mu C, Lin W, Ngai T. Gelatin Effects on the Physicochemical and Hemocompatible Properties of Gelatin/PAAm/Laponite Nanocomposite Hydrogels. ACS APPLIED MATERIALS & INTERFACES 2015. [PMID: 26202134 DOI: 10.1021/acsami.5b05287] [Citation(s) in RCA: 83] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
In recent years, inorganic nanoparticles such as Laponite have frequently been incorporated into polymer matrixes to obtain nanocomposite hydrogels with hierarchical structures, ultrastrong tensibilities, and high transparencies. Despite their unique physical and chemical properties, only a few reports have evaluated Laponite-based nanocomposite hydrogels for biomedical applications. This article presents the synthesis and characterization of a novel, hemocompatible nanocomposite hydrogels by in situ polymerization of acrylamide (AAm) in a mixed suspension containing Laponite and gelatin. The compatibility, structure, thermal stability, and mechanical properties of the resulting NC gels with varied gel compositions were investigated. Our results show that the prepared nanocomposite hydrogels exhibit good thermal stability and mechanical properties. The introduction of a biocompatible polymer, gelatin, into the polymer matrix did not change the transparency and homogeneity of the resulting nanocomposite hydrogels, but it significantly decreased the hydrogel's pH-responsive properties. More importantly, gelatins that were incorporated into the PAAm network resisted nonspecific protein adsorption, improved the degree of hemolysis, and eventually prolonged the clotting time, indicating that the in vitro hemocompatibility of the resulting nanocomposite hydrogels had been substantially enhanced. Therefore, these nanocomposite hydrogels provide opportunities for potential use in various biomedical applications.
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Affiliation(s)
| | | | | | - To Ngai
- Department of Chemistry, The Chinese University of Hong Kong , Shatin, N. T. Hong Kong
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Siviero A, Gallo E, Maggini V, Gori L, Mugelli A, Firenzuoli F, Vannacci A. Curcumin, a golden spice with a low bioavailability. J Herb Med 2015. [DOI: 10.1016/j.hermed.2015.03.001] [Citation(s) in RCA: 166] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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35
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Jaiswal M, Gupta A, Dinda AK, Koul V. An investigation study of gelatin release from semi-interpenetrating polymeric network hydrogel patch for excision wound healing on Wistar rat model. J Appl Polym Sci 2015. [DOI: 10.1002/app.42120] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Maneesh Jaiswal
- Centre for Biomedical Engineering; Indian Institute of Technology; New Delhi 110016 India
| | - Asheesh Gupta
- Pharmacology Division; Defence Institute of Physiology and Allied Sciences, Ministry of Defense; New Delhi 110059 India
| | - Amit Kumar Dinda
- Department of Pathology; All India Institute of Medical Sciences; New Delhi 110024 India
| | - Veena Koul
- Centre for Biomedical Engineering; Indian Institute of Technology; New Delhi 110016 India
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Hu X, Wei W, Qi X, Yu H, Feng L, Li J, Wang S, Zhang J, Dong W. Preparation and characterization of a novel pH-sensitive Salecan-g-poly(acrylic acid) hydrogel for controlled release of doxorubicin. J Mater Chem B 2015; 3:2685-2697. [PMID: 32262916 DOI: 10.1039/c5tb00264h] [Citation(s) in RCA: 86] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Salecan is a novel water-soluble extracellular β-glucan produced by a salt-tolerant strain Agrobacterium sp. ZX09. Salecan is suitable for the fabrication of hydrogels for biomedical applications due to its excellent physicochemical and biological properties. In this paper, a series of pH-sensitive hydrogels were prepared in aqueous solution by the graft copolymerization of Salecan and acrylic acid (AA) using N,N'-methylene diacrylamide as a crosslinker for controlled drug delivery. The structure and thermal stability of the resulting hydrogels were characterized by FT-IR, XRD and TGA. By SEM analysis, freeze-dried hydrogels displayed an interconnected porous structure with tunable pore size in the range of 23.2-90.3 μm. The swelling behavior of the hydrogels was shown to be highly dependent on the environmental pH, salt type and concentration, as well as the contents of Salecan and BAAm. They are almost unswellable at pH 1.2 and swollen extensively at pH 6.86. Meanwhile, the increase in the content of hydrophilic Salecan could enhance the swelling ratio, whereas the presence of more BAAm reduced the swelling capacity but promoted the water retention to some extent. Rheological tests revealed that storage modulus G' was strongly influenced by the crosslink density of the obtained hydrogel network. Especially, doxorubicin (DOX) as a model anti-cancer drug was very efficiently loaded into the negatively charged hydrogels (up to 69.4 wt%) through electrostatic interactions. More importantly, the release of DOX from this intelligent system exhibited pH-responsive behavior and a sustained release pattern. For SPA2, the cumulative release profile showed a low level of drug release (about 12.3 wt% in 24 h) at pH 7.4, and was significantly accelerated at pH 4.0 (over 40 wt% in 6 h). Cytotoxicity experiments confirmed that all blank hydrogels were non-toxic to A549 cells, while DOX released from the drug-loaded hydrogels remained biologically active and had the capability to kill cancer cells. The preliminary results clearly suggested that the Salecan-g-PAA hydrogels may be promising carriers for controlled drug delivery.
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Affiliation(s)
- Xinyu Hu
- Center for Molecular Metabolism, Nanjing University of Science & Technology, Nanjing 210094, China.
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Chen H, Chen Q, Hu R, Wang H, Newby BMZ, Chang Y, Zheng J. Mechanically strong hybrid double network hydrogels with antifouling properties. J Mater Chem B 2015; 3:5426-5435. [DOI: 10.1039/c5tb00681c] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The development of mechanically tough and biocompatible polymer hydrogels has great potential and promise for many applications.
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Affiliation(s)
- Hong Chen
- Department of Chemical and Biomolecular Engineering
- The University of Akron
- Akron
- USA
| | - Qiang Chen
- School of Material Science and Engineering
- Henan Polytechnic University
- Jiaozuo
- China
| | - Rundong Hu
- Department of Chemical and Biomolecular Engineering
- The University of Akron
- Akron
- USA
| | - Hua Wang
- Department of Chemical and Biomolecular Engineering
- The University of Akron
- Akron
- USA
| | - Bi-min Zhang Newby
- Department of Chemical and Biomolecular Engineering
- The University of Akron
- Akron
- USA
| | - Yung Chang
- R&D Center for Membrane Technology and Department of Chemical Engineering
- Chung Yuan University
- Taoyuan 320
- Taiwan
| | - Jie Zheng
- Department of Chemical and Biomolecular Engineering
- The University of Akron
- Akron
- USA
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Jaiswal M, Lale S, Ramesh NG, Koul V. Synthesis and characterization of positively charged interpenetrating double-network hydrogel matrices for biomedical applications. REACT FUNCT POLYM 2013. [DOI: 10.1016/j.reactfunctpolym.2013.07.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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39
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Ferfera-Harrar H, Aiouaz N, Dairi N, Hadj-Hamou AS. Preparation of chitosan-g-poly(acrylamide)/montmorillonite superabsorbent polymer composites: Studies on swelling, thermal, and antibacterial properties. J Appl Polym Sci 2013. [DOI: 10.1002/app.39747] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Hafida Ferfera-Harrar
- Materials Polymer Laboratory, Department of Macromolecular Chemistry, Faculty of Chemistry; University of Sciences and Technology Houari Boumediene USTHB; B.P. 32 El-Alia 16111 Algiers Algeria
| | - Nacera Aiouaz
- Materials Polymer Laboratory, Department of Macromolecular Chemistry, Faculty of Chemistry; University of Sciences and Technology Houari Boumediene USTHB; B.P. 32 El-Alia 16111 Algiers Algeria
| | - Nassima Dairi
- Materials Polymer Laboratory, Department of Macromolecular Chemistry, Faculty of Chemistry; University of Sciences and Technology Houari Boumediene USTHB; B.P. 32 El-Alia 16111 Algiers Algeria
| | - Assia Siham Hadj-Hamou
- Materials Polymer Laboratory, Department of Macromolecular Chemistry, Faculty of Chemistry; University of Sciences and Technology Houari Boumediene USTHB; B.P. 32 El-Alia 16111 Algiers Algeria
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Jaiswal M, Naz F, Dinda AK, Koul V. In vitro and in vivo
efficacy of doxorubicin loaded biodegradable semi-interpenetrating hydrogel implants of poly (acrylic acid)/gelatin for post surgical tumor treatment. Biomed Mater 2013; 8:045004. [DOI: 10.1088/1748-6041/8/4/045004] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Lin X, Tang D, Du H. Self-assembly and controlled release behaviour of the water-insoluble drug nifedipine from electrospun PCL-based polyurethane nanofibres. J Pharm Pharmacol 2013; 65:673-81. [PMID: 23600384 DOI: 10.1111/jphp.12036] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2012] [Accepted: 01/15/2013] [Indexed: 12/13/2022]
Abstract
OBJECTIVES Electrospun micro- and nanofibres are increasingly being investigated for drug delivery. The components of nanofibres are important influences on the drug release behaviour. The aim of this study was to investigate the self-assembly and release behaviour of drug from nanofibres. METHODS Water-insoluble drug nifedipine (NIF)-loaded nanofibres with polymeric carrier of polycaprolactone (PCL)-based polyurethane (PU) were fabricated by electrospinning. The morphology of the nanofibres and the composite nanofibres with NIF were examined by scanning electron microscopy (SEM). The interactions between NIF and PU were followed by Fourier-transform infrared spectroscopy, and the elemental composition on the surface of the nanofibres was characterized by X-ray photoelectron spectroscopy. The release behaviour of NIF from nanofibres was observed by SEM (contacted with or without a drop of ethanol), and demonstrated by UV-Vis spectroscopy. KEY FINDINGS In-vitro drug release studies revealed that a self-assembly process of NIF particles might be achieved within the body of the nanofibres. The electrospun nanofibre was an ideal drug carrier compared with a spin-coated film and could achieve controlled release of drug. CONCLUSIONS The electrospinning technique could be used to fabricate a polymeric carrier that might have potential applications in the biomedical field.
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Affiliation(s)
- Xiuling Lin
- Department of Chemistry, Harbin Institute of Technology, Harbin, China
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Yu L, Zhang Z, Ding J. In vitro degradation and protein release of transparent and opaque physical hydrogels of block copolymers at body temperature. Macromol Res 2012. [DOI: 10.1007/s13233-012-0049-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Jaiswal M, Koul V. Assessment of multicomponent hydrogel scaffolds of poly(acrylic acid-2-hydroxy ethyl methacrylate)/gelatin for tissue engineering applications. J Biomater Appl 2011; 27:848-61. [DOI: 10.1177/0885328211428524] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The article describes the design of the multicomponent hydrogel system of poly(acrylic acid-HEMA)/gelatin for tissue engineering application. Derivative of polycaprolactone-diol (polycaprolactone diacrylate (PCL-DAr)) was used to cross-link acrylate monomers whereas gelatin was kept free for cell proliferation. Epigallocatechin gallate (EGCG), an anti-oxidant phytochemical, was loaded by diffusion method. Its in vitro release study in PBS (pH 6.5) at 37 ± 0.2°C (75 rpm) revealed a sustained release profile upto 20 days. Fitting of drug release data in Korsmeyer-Peppas model equation revealed probable release mechanism through the value of release coefficient ( n), which was found to depend on formulations composition. Drug-polymer interaction, thermal behavior, and surface morphology were investigated by attenuated total reflectance–Fourier transform infrared (ATR-FTIR) spectroscopy, thermogravimetric analysis (TGA), and scanning electron microscopic (SEM). Swelling behavior of hydrogel in PBS (pH 6.5 and 7.4, 0.2 M) and in distilled water was found to increase with increasing AAc/HEMA ratio. Compression modulus decreased from 203 ± 3.7 KPa to 11.6 ± 1.1KPa, at 30% strain, whereas displacement values significantly increased from 3.2 ± 0.2 to 4.7 ± 0.6 mm at 20 N force ( p < 0.05), with increasing AAc/HEMA ratio. Percentage cell viability was analyzed using indirect 3-[4, 5-dimethylthiazolyl-2]-2,5-diphenyltetrazo-liumbromide (MTT) assay with fibroblast L929 cells; showed ≥92.3% cell viability after 24 h incubation. Cell proliferation on the scaffold surface was found to increase with incorporation of HEMA in P(AAc)/G cross-linked hydrogel matrix upto a certain extent. These biocompatible, elastic, and swellable hydrogels can serve as a matrix for drug delivery and tissue engineering applications.
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Affiliation(s)
- Maneesh Jaiswal
- Centre for Biomedical Engineering, Indian Institute of Technology, New Delhi, India, 110016
| | - Veena Koul
- Centre for Biomedical Engineering, Indian Institute of Technology, New Delhi, India, 110016
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Jaiswal M, Koul V, Dinda AK, Mohanty S, Jain KG. Cell adhesion and proliferation studies on semi-interpenetrating polymeric networks (semi-IPNs) of polyacrylamide and gelatin. J Biomed Mater Res B Appl Biomater 2011; 98:342-50. [DOI: 10.1002/jbm.b.31857] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2010] [Revised: 02/07/2011] [Accepted: 02/24/2011] [Indexed: 11/09/2022]
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