101
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Ronca A, D'Amora U, Raucci MG, Lin H, Fan Y, Zhang X, Ambrosio L. A Combined Approach of Double Network Hydrogel and Nanocomposites Based on Hyaluronic Acid and Poly(ethylene glycol) Diacrylate Blend. MATERIALS (BASEL, SWITZERLAND) 2018; 11:E2454. [PMID: 30518026 PMCID: PMC6316897 DOI: 10.3390/ma11122454] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Revised: 11/21/2018] [Accepted: 11/29/2018] [Indexed: 01/20/2023]
Abstract
In this study, an innovative polymer blend, based on double network (DN) approach, has been developed by integrating a poly(ethylene glycol) diacrylate (PEGDA) network into a chemically modified hyaluronic acid sodium salt (HAs) hydrogel matrix. Here, the HAs was chemically functionalized with photocrosslinkable moieties by reacting with maleic anhydride (MAA) to obtain a maleated hyaluronic acid (MaHA). Furthermore, nanocomposite DN hydrogels were suitably prepared by physical blending of hydroxyapatite nanoparticles (HAp), obtained by sol-gel synthesis, within the hydrogel. Physico-chemical, thermal, morphological and mechanical analyses were performed. Results showed enhanced mechanical properties and a homogenous microstructure as highlighted by mechanical and morphological investigations. This suggests that nanocomposite DN hydrogels are promising candidates for biomedical applications.
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Affiliation(s)
- Alfredo Ronca
- Institute of Polymers, Composites and Biomaterials, National Research Council, 80125 Naples, Italy.
| | - Ugo D'Amora
- Institute of Polymers, Composites and Biomaterials, National Research Council, 80125 Naples, Italy.
| | - Maria Grazia Raucci
- Institute of Polymers, Composites and Biomaterials, National Research Council, 80125 Naples, Italy.
| | - Hai Lin
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 61000, China.
| | - Yujiang Fan
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 61000, China.
| | - Xingdong Zhang
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 61000, China.
| | - Luigi Ambrosio
- Institute of Polymers, Composites and Biomaterials, National Research Council, 80125 Naples, Italy.
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102
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Zhang X, Cox L, Wen Z, Xi W, Ding Y, Bowman CN. Implementation of two distinct wavelengths to induce multistage polymerization in shape memory materials and nanoimprint lithography. POLYMER 2018; 156:162-168. [PMID: 31105340 PMCID: PMC6519971 DOI: 10.1016/j.polymer.2018.09.032] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Here, a process is introduced for forming dual stage thiol-Michael/acrylate hybrid networks photocured by two different wavelengths, demonstrating its use in nanoimprint lithography (NIL) and shape memory materials. Initiated with a visible light sensitive photobase and a UV-sensitive radical initiator, thiol-Michael-acrylate hybrid polymerizations were programmed to proceed sequentially and orthogonally, with base-catalyzed thiol-Michael photopolymerization as the first stage and radical mediated acrylate photopolymerization as the second stage. By regulating the photopolymerization formulations, i.e. thiol-to-acrylate ratios, initiator loadings and irradiation conditions, a series of materials with highly tunable mechanical performance was achieved, with ultimate Tg values ranging from 23 to 70 °C. With a photopatternable first stage and a readily reconfigurable second stage, its implementation in nanoimprint lithography (NIL) enabled surface features on the scale of 10 nm to be formed on a photopatterned substrate. Additionally, the dual stage polymer results in a relatively homogenous polymer network with a narrow glass transition temperature (Tg), which enables rapid response in applications as shape memory materials, with shape-fixity values above 95% and shaperecovery values above 99%. With its unique photocuring process and programmable mechanical properties, the two color light controlled photopolymerization can be exploited as a useful tool in a wide range of materials science applications.
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Affiliation(s)
- Xinpeng Zhang
- Department of Chemical and Biological Engineering, University of Colorado Boulder, 596 UCB, Boulder, CO 80309-0596, United States
| | - Lewis Cox
- Department of Chemical and Biological Engineering, University of Colorado Boulder, 596 UCB, Boulder, CO 80309-0596, United States
| | - Zhibin Wen
- Center for Degradable and Flame-Retardant Polymeric Materials (ERCEPM-MOE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610064, China
| | - Weixian Xi
- Department of Chemical and Biological Engineering, University of Colorado Boulder, 596 UCB, Boulder, CO 80309-0596, United States
| | - Yifu Ding
- Department of Mechanical Engineering, University of Colorado, 1111 Engineering Drive, Boulder, Colorado 80309, United States
| | - Christopher N Bowman
- Department of Chemical and Biological Engineering, University of Colorado Boulder, 596 UCB, Boulder, CO 80309-0596, United States
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103
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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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104
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Pan Y, Wang J, Cai P, Xiao H. Dual-responsive IPN hydrogel based on sugarcane bagasse cellulose as drug carrier. Int J Biol Macromol 2018; 118:132-140. [DOI: 10.1016/j.ijbiomac.2018.06.072] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Revised: 06/08/2018] [Accepted: 06/13/2018] [Indexed: 02/02/2023]
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105
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Pacelli S, Rampetsreiter K, Modaresi S, Subham S, Chakravarti AR, Lohfeld S, Detamore MS, Paul A. Fabrication of a Double-Cross-Linked Interpenetrating Polymeric Network (IPN) Hydrogel Surface Modified with Polydopamine to Modulate the Osteogenic Differentiation of Adipose-Derived Stem Cells. ACS APPLIED MATERIALS & INTERFACES 2018; 10:24955-24962. [PMID: 29969894 PMCID: PMC6535093 DOI: 10.1021/acsami.8b05200] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Hydrogel surface properties can be modified to form bioactive interfaces to modulate the osteogenic differentiation of stem cells. In this work, a hydrogel made of gelatin methacrylamide (GelMA) and alginate was designed and tested as a scaffold to control stem-cell osteogenic differentiation. The hydrogel's surface was treated with polydopamine (pDA) to create an adhesive layer for the adsorption of the osteoinductive drug dexamethasone (Dex). The presence of the pDA coating enhanced Dex adsorption and retention over 21 days. This effect resulted in a delay in the osteogenic differentiation of hASCs cultured on the hydrogel treated with a pDA layer.
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Affiliation(s)
- Settimio Pacelli
- Department of Chemical and Petroleum Engineering, BioIntel Research Laboratory, University of Kansas, Lawrence, Kansas 66045, United States
| | - Kyle Rampetsreiter
- Department of Chemical and Petroleum Engineering, BioIntel Research Laboratory, University of Kansas, Lawrence, Kansas 66045, United States
| | - Saman Modaresi
- Department of Chemical and Petroleum Engineering, BioIntel Research Laboratory, University of Kansas, Lawrence, Kansas 66045, United States
| | - Siddharth Subham
- Department of Chemical and Petroleum Engineering, BioIntel Research Laboratory, University of Kansas, Lawrence, Kansas 66045, United States
| | - Aparna R. Chakravarti
- Department of Chemical and Petroleum Engineering, BioIntel Research Laboratory, University of Kansas, Lawrence, Kansas 66045, United States
| | - Stefan Lohfeld
- Department of Chemical and Petroleum Engineering, BioIntel Research Laboratory, University of Kansas, Lawrence, Kansas 66045, United States
- Biomechanics Research Centre (BMEC), Mechanical and Biomedical Engineering, College of Engineering and Informatics, National University of Ireland, Galway, H91 TK33 Ireland
| | - Michael S. Detamore
- Department of Chemical and Petroleum Engineering, BioIntel Research Laboratory, University of Kansas, Lawrence, Kansas 66045, United States
- Stephenson School of Biomedical Engineering, University of Oklahoma, Norman, Oklahoma 73019, United States
| | - Arghya Paul
- Department of Chemical and Petroleum Engineering, BioIntel Research Laboratory, University of Kansas, Lawrence, Kansas 66045, United States
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106
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Champeau M, Póvoa V, Militão L, Cabrini FM, Picheth GF, Meneau F, Jara CP, de Araujo EP, de Oliveira MG. Supramolecular poly(acrylic acid)/F127 hydrogel with hydration-controlled nitric oxide release for enhancing wound healing. Acta Biomater 2018; 74:312-325. [PMID: 29777958 DOI: 10.1016/j.actbio.2018.05.025] [Citation(s) in RCA: 77] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Revised: 05/07/2018] [Accepted: 05/15/2018] [Indexed: 01/20/2023]
Abstract
Topical nitric oxide (NO) delivery has been shown to accelerate wound healing. However, delivering NO to wounds at appropriate rates and doses requires new biomaterial-based strategies. Here, we describe the development of supramolecular interpolymer complex hydrogels comprising PEO-PPO-PEO (F127) micelles embedded in a poly(acrylic acid) (PAA) matrix, with S-nitrosoglutathione (GSNO) molecules dissolved in the hydrophilic domain. We show that PAA:F127/GSNO hydrogels start releasing NO upon hydration at rates controlled by their rates of water absorption. SAXS measurements indicate that the supramolecular structure of the hydrogels retains long-range order domains of F127 micelles. The PAA/F1227 hydrogels displayed dense morphologies and reduced rates of hydration. The NO release rates remain constant over the first 200 min, are directly correlated with the hydration rates of the PAA:F127/GSNO hydrogels, and can be modulated in the range of 40 nmol/g h to 1.5 μmol/g h by changing the PAA:F127 mass ratio. Long-term NO-release profiles over 5 days are governed by the first-order exponential decay of GSNO, with half-lives in the range of 0.5-3.4 days. A preliminary in vivo study on full-thickness excisional wounds in mice showed that topical NO release from the PAA:F127/GSNO hydrogels is triggered by exudate absorption and leads to increased angiogenesis and collagen fiber organization, as well as TGF-β, IGF-1, SDF-1, and IL-10 gene expressions in the cicatricial tissue. In summary, these results suggest that hydration-controlled NO release from topical PAA:F127/GSNO hydrogels is a potential strategy for enhancing wound healing. STATEMENT OF SIGNIFICANCE The topical delivery of nitric oxide (NO) to wounds may provide significant beneficial results and represent a promising strategy to treat chronic wounds. However, wound dressings capable of releasing NO after application and allowing the modulation of NO release rates, demand new platforms. Here, we describe a novel strategy to overcome these challenges, based on the use of supramolecular poly(acrylic acid) (PAA):F127 hydrogels charged with the NO donor S-nitrosoglutathione (GSNO) from whereby the NO release can be triggered by exudate absorption and delivered to the wound at rates controlled by the PAA:F127 mass ratio. Preliminary in vivo results offer a proof of concept for this strategy by demonstrating increased angiogenesis; collagen fibers organization; and TGF-β, IGF-1, SDF-1, and IL-10 gene expressions in the cicatricial tissue after topical treatment with a PAA:F127/GSNO hydrogel.
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107
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Nicol E, Nicolai T, Zhao J, Narita T. Photo-Cross-Linked Self-Assembled Poly(ethylene oxide)-Based Hydrogels Containing Hybrid Junctions with Dynamic and Permanent Cross-Links. ACS Macro Lett 2018; 7:683-687. [PMID: 35632977 DOI: 10.1021/acsmacrolett.8b00317] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Homogeneous hydrogels were formed by self-assembly of triblock copolymers via association of small hydrophobic end blocks into micelles bridged by large poly(ethylene oxide) central blocks. A fraction of the end blocks were photo-cross-linkable and could be rapidly cross-linked covalently by in situ UV irradiation. In this manner networks were formed with well-defined chain lengths between homogeneously distributed hybrid micelles that contained both permanent and dynamically cross-linked end blocks. Linear rheology showed a single relaxation mode before in situ irradiation intermediate between those of the individual networks. The presence of transient cross-links decreased the percolation threshold of the network rendered permanent by irradiation and caused a strong increase of the elastic modulus at lower polymer concentrations. Large amplitude oscillation and tensile tests showed significant increase of the fracture strain caused by the dynamic cross-links.
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Affiliation(s)
- Erwan Nicol
- IMMM − UMR CNRS 6283, Le Mans Université, Avenue O. Messiaen, 72085 Cedex 9 Le Mans, France
| | - Taco Nicolai
- IMMM − UMR CNRS 6283, Le Mans Université, Avenue O. Messiaen, 72085 Cedex 9 Le Mans, France
| | - Jingwen Zhao
- Laboratoire Sciences et Ingénierie de la Matière Molle, ESPCI Paris, PSL University, Sorbonne Université, CNRS, 75005 Paris, France
| | - Tetsuharu Narita
- Laboratoire Sciences et Ingénierie de la Matière Molle, ESPCI Paris, PSL University, Sorbonne Université, CNRS, 75005 Paris, France
- Global Station for Soft Matter, Global Institution for Collaborative Research and Education, Hokkaido University, Sapporo, Japan
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108
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Wan H, Shen J, Gao N, Liu J, Gao Y, Zhang L. Tailoring the mechanical properties by molecular integration of flexible and stiff polymer networks. SOFT MATTER 2018; 14:2379-2390. [PMID: 29503989 DOI: 10.1039/c7sm02282d] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Designing a multiple-network structure at the molecular level to tailor the mechanical properties of polymeric materials is of great scientific and technological importance. Through the coarse-grained molecular dynamics simulation, we successfully construct an interpenetrating polymer network (IPN) composed of a flexible polymer network and a stiff polymer network. First, we find that there is an optimal chain stiffness for a single network (SN) to achieve the best stress-strain behavior. Then we turn to study the mechanical behaviors of IPNs. The result shows that the stress-strain behaviors of the IPNs appreciably exceed the sum of that of the corresponding single flexible and stiff network, which highlights the advantage of the IPN structure. By systematically varying the stiffness of the stiff polymer network of the IPNs, optimal stiffness also exists to achieve the best performance. We attribute this to a much larger contribution of the non-bonded interaction energy. Last, the effect of the component concentration ratio is probed. With the increase of the concentration of the flexible network, the stress-strain behavior of the IPNs is gradually enhanced, while an optimized concentration (around 60% molar ration) of the stiff network occurs, which could result from the dominant role of the enthalpy rather than the entropy. In general, our work is expected to provide some guidelines to better tailor the mechanical properties of the IPNs made of a flexible network and a stiff network, by manipulating the stiffness of the stiff polymer network and the component concentration ratio.
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Affiliation(s)
- Haixiao Wan
- Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, People's Republic of China.
| | - Jianxiang Shen
- Department of Polymer Science and Engineering, Jiaxing University, Jiaxing 314001, P. R. China
| | - Naishen Gao
- Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, People's Republic of China.
| | - Jun Liu
- Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, People's Republic of China. and Beijing Engineering Research Center of Advanced Elastomers, Beijing University of Chemical Technology, People's Republic of China and Engineering Research Center of Elastomer Materials on Energy Conservation and Resources, Beijing University of Chemical Technology, People's Republic of China and Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, 100029 Beijing, People's Republic of China
| | - Yangyang Gao
- Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, People's Republic of China.
| | - Liqun Zhang
- Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, People's Republic of China. and Beijing Engineering Research Center of Advanced Elastomers, Beijing University of Chemical Technology, People's Republic of China and Engineering Research Center of Elastomer Materials on Energy Conservation and Resources, Beijing University of Chemical Technology, People's Republic of China and Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, 100029 Beijing, People's Republic of China and State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, 100029 Beijing, People's Republic of China
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109
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Hu L, Du M, Zhang J. Hemicellulose-Based Hydrogels Present Status and Application Prospects: A Brief Review. ACTA ACUST UNITED AC 2018. [DOI: 10.4236/ojf.2018.81002] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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110
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Meena LK, Raval P, Kedaria D, Vasita R. Study of locust bean gum reinforced cyst-chitosan and oxidized dextran based semi-IPN cryogel dressing for hemostatic application. Bioact Mater 2017; 3:370-384. [PMID: 29992195 PMCID: PMC6035369 DOI: 10.1016/j.bioactmat.2017.11.005] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Revised: 10/15/2017] [Accepted: 11/21/2017] [Indexed: 10/31/2022] Open
Abstract
Severe blood loss due to traumatic injuries remains one of the leading causes of death in emergency settings. Chitosan continues to be the candidate material for hemostatic applications due to its inherent hemostatic properties. However, available chitosan-based dressings have been reported to have an acidic odor at the wound site due to the incorporation of acid based solvents for their fabrication and deformation under compression owing to low mechanical strength limiting its usability. In the present study semi-IPN cryogel was fabricated via Schiff's base cross-linking between the polyaldehyde groups of oxidized dextran and thiolated chitosan in presence of locust bean gum (LBG) known for its hydrophilicity. Polymerization at -12 °C yielded macroporous semi-IPN cryogels with an average pore size of 124.57 ± 20.31 μm and 85.46% porosity. The hydrophobicity index of LBG reinforced semi-IPN cryogel was reduced 2.42 times whereas the swelling ratio was increased by 156.08% compare to control cryogel. The increased hydrophilicity and swelling ratio inflated the compressive modulus from 28.1 kPa to 33.85 for LBG reinforced semi-IPN cryogel. The structural stability and constant degradation medium pH were also recorded over a period of 12 weeks. The cryogels demonstrated lower adsorption affinity towards BSA. The cytotoxicity assays (direct, indirect) with 3T3-L1 fibroblast cells confirmed the cytocompatibility of the cryogels. The hemolysis assay showed <5% hemolysis confirming blood compatibility of the fabricated cryogel, while whole blood clotting and platelet adhesion assays confirmed the hemostatic potential of semi-IPN cryogel.
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Affiliation(s)
- Lalit Kumar Meena
- School of Life Sciences, Central University of Gujarat, Sector-30, Gandhinagar 382030, India
| | - Pavani Raval
- Government Engineering College, Sector-28, Gandhinagar 382028, India
| | - Dhaval Kedaria
- School of Life Sciences, Central University of Gujarat, Sector-30, Gandhinagar 382030, India
| | - Rajesh Vasita
- School of Life Sciences, Central University of Gujarat, Sector-30, Gandhinagar 382030, India
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111
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Gilbert T, Alsop RJ, Babi M, Moran-Mirabal J, Rheinstädter MC, Hoare T. Nanostructure of Fully Injectable Hydrazone-Thiosuccinimide Interpenetrating Polymer Network Hydrogels Assessed by Small-Angle Neutron Scattering and dSTORM Single-Molecule Fluorescence Microscopy. ACS APPLIED MATERIALS & INTERFACES 2017; 9:42179-42191. [PMID: 29131571 DOI: 10.1021/acsami.7b11637] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Herein, we comprehensively investigate the internal morphology of fully injectable interpenetrating networks (IPNs) prepared via coextrusion of functionalized precursor polymer solutions based on thermoresponsive poly(N-isopropylacrylamide) (PNIPAM) and nonthermoresponsive poly(vinyl pyrrolidone) (PVP) by reactive mixing using kinetically orthogonal hydrazone and thiosuccinimide cross-linking mechanisms. Small-angle neutron scattering, probing both the full IPN as well as the individual constituent networks of the IPN using index-matching, suggests a partially mixed internal structure characterized by PNIPAM-rich domains entrapped in a clustered PVP-rich phase. This interpretation is supported by super-resolution fluorescence microscopy (direct stochastic optical reconstruction microscopy) measurements on the same gels on a different length scale, which show both the overall phase segregation typical of an IPN as well as moderate mixing of PNIPAM into the PVP-rich phase. Such a morphology is consistent with the kinetics of both gelation and phase separation in this in situ gelling system, in which gelation effectively traps a fraction of the PNIPAM in the PVP phase prior to full phase separation; by contrast, such interphase mixing is not observed in semi-IPN control hydrogels. This knowledge has significant potential for the design of an injectable hydrogel with internal morphologies optimized for particular biomedical applications.
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Affiliation(s)
- Trevor Gilbert
- Department of Chemical Engineering, McMaster University , 1280 Main St. W, Hamilton, Ontario L8S 4L7, Canada
| | | | | | | | | | - Todd Hoare
- Department of Chemical Engineering, McMaster University , 1280 Main St. W, Hamilton, Ontario L8S 4L7, Canada
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112
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parhi R. Cross-Linked Hydrogel for Pharmaceutical Applications: A Review. Adv Pharm Bull 2017; 7:515-530. [PMID: 29399542 PMCID: PMC5788207 DOI: 10.15171/apb.2017.064] [Citation(s) in RCA: 231] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Revised: 09/13/2017] [Accepted: 09/16/2017] [Indexed: 11/10/2022] Open
Abstract
Hydrogels are promising biomaterials because of their important qualities such as biocompatibility, biodegradability, hydrophilicity and non-toxicity. These qualities make hydrogels suitable for application in medical and pharmaceutical field. Recently, a tremendous growth of hydrogel application is seen, especially as gel and patch form, in transdermal drug delivery. This review mainly focuses on the types of hydrogels based on cross-linking and; secondly to describe the possible synthesis methods to design hydrogels for different pharmaceutical applications. The synthesis and chemistry of these hydrogels are discussed using specific pharmaceutical examples. The structure and water content in a typical hydrogel have also been discussed.
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Affiliation(s)
- Rabinarayan parhi
- GITAM Institute of Pharmacy, GITAM University, Gandhi Nagar Campus, Rushikonda, Visakhapatnam-530045, Andhra Pradesh, India
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113
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Sing MK, Glassman MJ, Vronay-Ruggles XT, Burghardt WR, Olsen BD. Structure and rheology of dual-associative protein hydrogels under nonlinear shear flow. SOFT MATTER 2017; 13:8511-8524. [PMID: 29091099 DOI: 10.1039/c7sm00638a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Dual-associative protein di- and triblock copolymers composed of sticker-decorated midblocks and micelle-forming elastin-like polypeptide (ELP) endblocks form shear-thinning, thermoresponsively reinforceable hydrogels that are potentially useful as injectable materials for a variety of applications. Here, the combination of rheological and in situ scattering measurements under shear on these dual-associative gels is employed in order to better understand how block architecture plays a role in controlling microscopic structural rearrangement and the resulting macroscopic mechanical responses. These gels, which form a disordered sphere phase due to endblock aggregation under quiescent conditions with the midblock domains physically crosslinked by protein associations, exhibit both viscoelastic and thixotropic signatures with relative magnitudes dependent upon gel concentration and block architecture. In situ SAXS measurements during flow indicate that these thixotropic responses correspond to the development of ordered domains following start-up of shear. For both architectures, the rate of alignment increases with increasing concentration. However, the rate of domain formation when increasing the temperature from 35 to 50 °C depends on the interplay between thermoresponsive toughening of the endblocks and softening of the coiled-coil domains such that rate of rearrangement decreases in the triblock while it increases in the diblock. Following a step-down in shear flow, structural rearrangement within the samples results in a thixotropic stress response. Upon cessation of flow, gel recovery is characterized by a concentration-dependent restoration of the micellar network over time, with two timescales observed that correspond to two different length scales of network relaxation.
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Affiliation(s)
- Michelle K Sing
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
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114
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Feng J, Ton XA, Zhao S, Paez JI, Del Campo A. Mechanically Reinforced Catechol-Containing Hydrogels with Improved Tissue Gluing Performance. Biomimetics (Basel) 2017; 2:E23. [PMID: 31105184 PMCID: PMC6352675 DOI: 10.3390/biomimetics2040023] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2017] [Revised: 10/30/2017] [Accepted: 11/02/2017] [Indexed: 12/13/2022] Open
Abstract
In situ forming hydrogels with catechol groups as tissue reactive functionalities are interesting bioinspired materials for tissue adhesion. Poly(ethylene glycol) (PEG)⁻catechol tissue glues have been intensively investigated for this purpose. Different cross-linking mechanisms (oxidative or metal complexation) and cross-linking conditions (pH, oxidant concentration, etc.) have been studied in order to optimize the curing kinetics and final cross-linking degree of the system. However, reported systems still show limited mechanical stability, as expected from a PEG network, and this fact limits their potential application to load bearing tissues. Here, we describe mechanically reinforced PEG⁻catechol adhesives showing excellent and tunable cohesive properties and adhesive performance to tissue in the presence of blood. We used collagen/PEG mixtures, eventually filled with hydroxyapatite nanoparticles. The composite hydrogels show far better mechanical performance than the individual components. It is noteworthy that the adhesion strength measured on skin covered with blood was >40 kPa, largely surpassing (>6 fold) the performance of cyanoacrylate, fibrin, and PEG⁻catechol systems. Moreover, the mechanical and interfacial properties could be easily tuned by slight changes in the composition of the glue to adapt them to the particular properties of the tissue. The reported adhesive compositions can tune and improve cohesive and adhesive properties of PEG⁻catechol-based tissue glues for load-bearing surgery applications.
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Affiliation(s)
- Jun Feng
- INM ⁻ Leibniz Institute for New Materials, Campus D2 2, 66123 Saarbrücken, Germany.
- Chemistry Department, Saarland University, 66123 Saarbrücken, Germany.
| | - Xuan-Anh Ton
- Max-Planck-Institut für Polymerforschung, Ackermannweg 10, 55128 Mainz, Germany.
| | - Shifang Zhao
- INM ⁻ Leibniz Institute for New Materials, Campus D2 2, 66123 Saarbrücken, Germany.
- Chemistry Department, Saarland University, 66123 Saarbrücken, Germany.
| | - Julieta I Paez
- INM ⁻ Leibniz Institute for New Materials, Campus D2 2, 66123 Saarbrücken, Germany.
| | - Aránzazu Del Campo
- INM ⁻ Leibniz Institute for New Materials, Campus D2 2, 66123 Saarbrücken, Germany.
- Chemistry Department, Saarland University, 66123 Saarbrücken, Germany.
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115
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Singh P, Medronho B, Alves L, da Silva G, Miguel M, Lindman B. Development of carboxymethyl cellulose-chitosan hybrid micro- and macroparticles for encapsulation of probiotic bacteria. Carbohydr Polym 2017; 175:87-95. [DOI: 10.1016/j.carbpol.2017.06.119] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Revised: 06/29/2017] [Accepted: 06/29/2017] [Indexed: 01/31/2023]
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116
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Liu Z, Zhang C, Xu H, Ma X, Shi Z, Yin J. A Facile Method Synthesizing Hydrogel Using Hybranched Polyether Amine (hPEA) as Coinitiator and Crosslinker. MACROMOL CHEM PHYS 2017. [DOI: 10.1002/macp.201700251] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Zhiyong Liu
- School of Chemistry & Chemical Engineering; State Key Laboratory for Metal Matrix; Composite Materials; Shanghai Jiao Tong University; Shanghai 200240 P. R. China
| | - Changxu Zhang
- School of Chemistry & Chemical Engineering; State Key Laboratory for Metal Matrix; Composite Materials; Shanghai Jiao Tong University; Shanghai 200240 P. R. China
| | - Hongjie Xu
- School of Chemistry & Chemical Engineering; State Key Laboratory for Metal Matrix; Composite Materials; Shanghai Jiao Tong University; Shanghai 200240 P. R. China
| | - Xiaodong Ma
- School of Chemistry & Chemical Engineering; State Key Laboratory for Metal Matrix; Composite Materials; Shanghai Jiao Tong University; Shanghai 200240 P. R. China
| | - Zixing Shi
- School of Chemistry & Chemical Engineering; State Key Laboratory for Metal Matrix; Composite Materials; Shanghai Jiao Tong University; Shanghai 200240 P. R. China
| | - Jie Yin
- School of Chemistry & Chemical Engineering; State Key Laboratory for Metal Matrix; Composite Materials; Shanghai Jiao Tong University; Shanghai 200240 P. R. China
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117
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Baştürk E, Yüksel Deniz D, Şen F, Kahraman MV. A novel UV-cured interpenetrating organic-inorganic hybrid polymer network based phase change materials (IPN-PCM). POLYM ENG SCI 2017. [DOI: 10.1002/pen.24639] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Emre Baştürk
- Department of Chemistry; Marmara University; Istanbul 34722 Turkey
| | | | - Ferhat Şen
- Department of Chemistry; Marmara University; Istanbul 34722 Turkey
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118
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Yan Y, Li M, Yang D, Wang Q, Liang F, Qu X, Qiu D, Yang Z. Construction of Injectable Double-Network Hydrogels for Cell Delivery. Biomacromolecules 2017; 18:2128-2138. [DOI: 10.1021/acs.biomac.7b00452] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Yan Yan
- College
of Materials Science and Opto-electronic Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Mengnan Li
- State
Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Di Yang
- College
of Materials Science and Opto-electronic Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qian Wang
- State
Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Fuxin Liang
- State
Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Xiaozhong Qu
- College
of Materials Science and Opto-electronic Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Dong Qiu
- State
Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Zhenzhong Yang
- State
Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
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119
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Dixit A, Bag DS, Kalra S. Synthesis of strong and stretchable double network (DN) hydrogels of PVA-borax and P(AM-co-HEMA) and study of their swelling kinetics and mechanical properties. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.05.002] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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120
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Moini N, Kabiri K, Zohuriaan-Mehr MJ, Omidian H, Esmaeili N. Fine tuning of SAP properties via epoxy-silane surface modification. POLYM ADVAN TECHNOL 2017. [DOI: 10.1002/pat.4006] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Nasrin Moini
- Adhesive and Resin Department; Iran Polymer and Petrochemical Institute (IPPI); PO Box 14965-115 Tehran Iran
| | - Kourosh Kabiri
- Adhesive and Resin Department; Iran Polymer and Petrochemical Institute (IPPI); PO Box 14965-115 Tehran Iran
| | - Mohammad J. Zohuriaan-Mehr
- Adhesive and Resin Department; Iran Polymer and Petrochemical Institute (IPPI); PO Box 14965-115 Tehran Iran
| | - Hamid Omidian
- College of Pharmacy; Nova Southern University; 3200 South University Drive Ft. Lauderdale FL 33328 USA
| | - Naser Esmaeili
- Adhesive and Resin Department; Iran Polymer and Petrochemical Institute (IPPI); PO Box 14965-115 Tehran Iran
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121
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Wiener CG, Wang C, Liu Y, Weiss RA, Vogt BD. Nanostructure Evolution during Relaxation from a Large Step Strain in a Supramolecular Copolymer-Based Hydrogel: A SANS Investigation. Macromolecules 2017. [DOI: 10.1021/acs.macromol.6b02680] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Clinton G. Wiener
- Department
of Polymer Engineering, University of Akron, Akron, Ohio 44325, United States
| | - Chao Wang
- Department
of Polymer Engineering, University of Akron, Akron, Ohio 44325, United States
| | - Yun Liu
- Center
for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
| | - R. A. Weiss
- Department
of Polymer Engineering, University of Akron, Akron, Ohio 44325, United States
| | - Bryan D. Vogt
- Department
of Polymer Engineering, University of Akron, Akron, Ohio 44325, United States
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122
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Wang C, Duan Y, Zacharia NS, Vogt BD. A family of mechanically adaptive supramolecular graphene oxide/poly(ethylenimine) hydrogels from aqueous assembly. SOFT MATTER 2017; 13:1161-1170. [PMID: 28098316 DOI: 10.1039/c6sm02439d] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Composite hydrogels containing graphene oxide (GO) offer advantageous mechanical properties, but tuning these properties generally requires the synthesis of new hydrogels or if the hydrogel is thermally responsive, utilization of a chemistry determined temperature window. Here, we demonstrate a simple route to generate a family of GO-based hydrogels from aqueous solution based assembly of GO with polycationic poly(ethylenimine), PEI, without any secondary chemical crosslinking. Tuning the ratio of GO : PEI during the assembly produces a family of hydrogels that responds to mechanical compression by irreversibly altering their equilibrium water content and mechanical properties in a controllable manner. Despite the lack of chemical crosslinks, the hydrogels are stable when stored in an excess of water or NaCl solutions (up to 1 M) and exhibit a tunable swelling ratio (mass hydrogel : mass solid) between 44 and 162 based on both composition and compression history. Consequently, the storage modulus from shear rheology can be increased by more than 3 orders of magnitude from this irreversible mechanical compression of the hydrogel. This stiffening of the hydrogels in response to mechanical stimuli enables the prior compression loading of the hydrogel to be determined. We demonstrate that this strategy is generalizable to other anionic 2D materials such as clay (cloisite). This family of mechanically adaptive hydrogels enables facile fabrication and tuning of physical properties that could be advantageous for sensing, energy dissipation, and other applications.
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Affiliation(s)
- Chao Wang
- Department of Polymer Engineering, University of Akron, 250 S. Forge St, Akron, OH 44325, USA.
| | - Yipin Duan
- Department of Polymer Engineering, University of Akron, 250 S. Forge St, Akron, OH 44325, USA.
| | - Nicole S Zacharia
- Department of Polymer Engineering, University of Akron, 250 S. Forge St, Akron, OH 44325, USA.
| | - Bryan D Vogt
- Department of Polymer Engineering, University of Akron, 250 S. Forge St, Akron, OH 44325, USA.
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123
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Kheirabadi M, Shi L, Bagheri R, Kabiri K, Hilborn J, Ossipov DA. In situ forming interpenetrating hydrogels of hyaluronic acid hybridized with iron oxide nanoparticles. Biomater Sci 2017; 3:1466-74. [PMID: 26247066 DOI: 10.1039/c5bm00150a] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Four derivatives of hyaluronic acid (HA) bearing thiol (HA-SH), hydrazide (HA-hy), 2-dithiopyridyl (HA-SSPy), and aldehyde groups (HA-al) respectively were synthesized. Thiol and 2-dithiopyridyl as well as hydrazide and aldehyde make up two chemically orthogonal pairs of chemo-selective functionalities that allow in situ formation of interpenetrating (IPN) disulfide and hydrazone networks simultaneously upon the mixing of the above derivatives at once. The formation of IPN was demonstrated by comparing it with the formulations of the same total HA concentration but lacking one of the reactive components. The hydrogel composed of all four components was characterized by a larger elastic modulus than those of the control single networks (either disulfide or hydrazone) and the three component formulations gave the softest hydrogels. Moreover, a hydrazone cross-linkage was designed to contain a 1,2-diol fragment. This allowed us to partially disassemble one type of network in the IPN leaving another one unaffected. In particular, treatment of the IPN with either sodium periodate or dithiothreitol resulted in disassembly of the hydrazone and disulfide networks respectively and thus softening of the hydrogel. Contrarily, the single network hydrogels completely dissolved under the corresponding conditions. In corroboration with this, enzymatic degradation of the IPN by hyaluronidase was also substantially slower than the degradation of the single networks. In order to further improve the mechanical properties of the elaborated injectable IPN, it has been in situ hybridized with iron oxide nanoparticles (IONPs). The mesh size of the IPN was smaller than the size of the IONPs resulting in the retention of nanoparticles in the matrix under equilibrium swelling conditions. However, these nanoparticles were released upon enzymatic degradation suggesting their use as MRI tags for non-invasive tracking of the hydrogel material in vivo. Additionally, this injectable hybridized hydrogel with encapsulated IONPs can be used in hyperthermia cancer therapy.
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Affiliation(s)
- Malihe Kheirabadi
- Institute for Nanoscience and Nanotechnology, Sharif University of Technology, Azadi Street, P.O. Box 11155-8639, Tehran, Iran
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124
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Chang B, Ahuja N, Ma C, Liu X. Injectable scaffolds: Preparation and application in dental and craniofacial regeneration. MATERIALS SCIENCE & ENGINEERING. R, REPORTS : A REVIEW JOURNAL 2017; 111:1-26. [PMID: 28649171 PMCID: PMC5478172 DOI: 10.1016/j.mser.2016.11.001] [Citation(s) in RCA: 142] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Injectable scaffolds are appealing for tissue regeneration because they offer many advantages over pre-formed scaffolds. This article provides a comprehensive review of the injectable scaffolds currently being investigated for dental and craniofacial tissue regeneration. First, we provide an overview of injectable scaffolding materials, including natural, synthetic, and composite biomaterials. Next, we discuss a variety of characteristic parameters and gelation mechanisms of the injectable scaffolds. The advanced injectable scaffolding systems developed in recent years are then illustrated. Furthermore, we summarize the applications of the injectable scaffolds for the regeneration of dental and craniofacial tissues that include pulp, dentin, periodontal ligament, temporomandibular joint, and alveolar bone. Finally, our perspectives on the injectable scaffolds for dental and craniofacial tissue regeneration are offered as signposts for the future advancement of this field.
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Affiliation(s)
- Bei Chang
- Department of Biomedical Sciences, Texas A&M University College of Dentistry, Dallas, TX 75246, USA
| | - Neelam Ahuja
- Department of Biomedical Sciences, Texas A&M University College of Dentistry, Dallas, TX 75246, USA
| | - Chi Ma
- Department of Biomedical Sciences, Texas A&M University College of Dentistry, Dallas, TX 75246, USA
| | - Xiaohua Liu
- Department of Biomedical Sciences, Texas A&M University College of Dentistry, Dallas, TX 75246, USA
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125
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Zhu H, Cai X, Wu L, Gu Z. A facile one-step gelation approach simultaneously combining physical and chemical cross-linking for the preparation of injectable hydrogels. J Mater Chem B 2017; 5:3145-3153. [DOI: 10.1039/c7tb00396j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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126
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Karoyo AH, Wilson LD. Physicochemical Properties and the Gelation Process of Supramolecular Hydrogels: A Review. Gels 2017; 3:E1. [PMID: 30920498 PMCID: PMC6318668 DOI: 10.3390/gels3010001] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Revised: 12/01/2016] [Accepted: 12/02/2016] [Indexed: 12/29/2022] Open
Abstract
Supramolecular polysaccharide-based hydrogels have attracted considerable research interest recently due to their high structural functionality, low toxicity, and potential applications in foods, cosmetics, catalysis, drug delivery, tissue engineering and the environment. Modulation of the stability of hydrogels is of paramount importance, especially in the case of stimuli-responsive systems. This review will update the recent progress related to the rational design of supramolecular hydrogels with the objective of understanding the gelation process and improving their physical gelation properties for tailored applications. Emphasis will be given to supramolecular host⁻guest systems with reference to conventional gels in describing general aspects of gel formation. A brief account of the structural characterization of various supramolecular hydrogels is also provided in order to gain a better understanding of the design of such materials relevant to the nature of the intermolecular interactions, thermodynamic properties of the gelation process, and the critical concentration values of the precursors and the solvent components. This mini-review contributes to greater knowledge of the rational design of supramolecular hydrogels with tailored applications in diverse fields ranging from the environment to biomedicine.
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Affiliation(s)
- Abdalla H Karoyo
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, SK S7N 5C9, Canada.
| | - Lee D Wilson
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, SK S7N 5C9, Canada.
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127
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Li X, Cai X, Gao Y, Serpe MJ. Reversible bidirectional bending of hydrogel-based bilayer actuators. J Mater Chem B 2017; 5:2804-2812. [DOI: 10.1039/c7tb00426e] [Citation(s) in RCA: 85] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Semi-IPN hydrogel-based bilayers were fabricated and exhibited unique bidirectional bending behavior in response to solution temperature and pH, which is vastly different from what is observed for bilayers composed of only conventional hydrogels.
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Affiliation(s)
- Xue Li
- Department of Chemistry
- University of Alberta
- Edmonton
- Canada
| | - Xiangbin Cai
- Department of Chemistry
- University of Alberta
- Edmonton
- Canada
| | - Yongfeng Gao
- Department of Chemistry
- University of Alberta
- Edmonton
- Canada
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128
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Kitiri EN, Patrickios CS, Voutouri C, Stylianopoulos T, Hoffmann I, Schweins R, Gradzielski M. Double-networks based on pH-responsive, amphiphilic “core-first” star first polymer conetworks prepared by sequential RAFT polymerization. Polym Chem 2017. [DOI: 10.1039/c6py01340f] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Double-networks based on amphiphilic polymer conetworks synthesized using RAFT polymerization were prepared, exhibiting pH-responsiveness, nanophase separation and enhanced mechanical properties.
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Affiliation(s)
- Elina N. Kitiri
- Department of Chemistry
- University of Cyprus
- 1678 Nicosia
- Cyprus
| | | | - Chrysovalantis Voutouri
- Department of Mechanical and Manufacturing Engineering
- University of Cyprus
- Nicosia 1678
- Cyprus
| | | | - Ingo Hoffmann
- Stranski Laboratorium für Physikalische und Theoretische Chemie
- Institut für Chemie Technische Universität Berlin
- 10623 Berlin
- Germany
- Institut Max von Laue-Paul Langevin (ILL)
| | - Ralf Schweins
- Institut Max von Laue-Paul Langevin (ILL)
- F-38042 Grenoble Cedex 9
- France
| | - Michael Gradzielski
- Stranski Laboratorium für Physikalische und Theoretische Chemie
- Institut für Chemie Technische Universität Berlin
- 10623 Berlin
- Germany
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129
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Liu S, Dong M, Zhang Z, Fu G. High elasticity, strength, and biocompatible amphiphilic hydrogel via click chemistry and ferric ion coordination. POLYM ADVAN TECHNOL 2016. [DOI: 10.1002/pat.3997] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Shunli Liu
- School of Chemistry and Chemical Engineering; Southeast University; Jiangning District Nanjing 211189 Jiangsu Province China
| | - Mengjiao Dong
- School of Chemistry and Chemical Engineering; Southeast University; Jiangning District Nanjing 211189 Jiangsu Province China
| | - Zhihong Zhang
- Henan Provincial Key Laboratory of Surface and Interface Science; Zhengzhou University of Light Industry; No. 166, Science Avenue Zhengzhou 450001 China
| | - Guodong Fu
- School of Chemistry and Chemical Engineering; Southeast University; Jiangning District Nanjing 211189 Jiangsu Province China
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130
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Koehler J, Wallmeyer L, Hedtrich S, Goepferich AM, Brandl FP. pH-Modulating Poly(ethylene glycol)/Alginate Hydrogel Dressings for the Treatment of Chronic Wounds. Macromol Biosci 2016; 17. [PMID: 27995736 DOI: 10.1002/mabi.201600369] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Revised: 10/25/2016] [Indexed: 12/20/2022]
Abstract
The development of chronic wounds has been frequently associated with alkaline pH values. The application of pH-modulating wound dressings can, therefore, be a promising treatment option to promote normal wound healing. This study reports on the development and characterization of acidic hydrogel dressings based on interpenetrating poly(ethylene glycol) diacrylate/acrylic acid/alginate networks. The incorporation of ionizable carboxylic acid groups results in high liquid uptake up to 500%. The combination of two separate polymer networks significantly improves the tensile and compressive stability. In a 2D cell migration assay, the application of hydrogels (0% to 1.5% acrylic acid) results in complete "wound" closure; hydrogels with 0.25% acrylic acid significantly increase the cell migration velocity to 19.8 ± 1.9 µm h-1 . The most promising formulation (hydrogels with 0.25% acrylic acid) is tested on 3D human skin constructs, increasing keratinocyte ingrowth into the wound by 164%.
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Affiliation(s)
- Julia Koehler
- Department of Pharmaceutical Technology, University of Regensburg, Universitätsstr. 31, 93053, Regensburg, Germany
| | - Leonie Wallmeyer
- Institute of Pharmacy, Pharmacology and Toxicology, Freie Universität Berlin, Königin-Luise-Str. 2+4, 14195, Berlin, Germany
| | - Sarah Hedtrich
- Institute of Pharmacy, Pharmacology and Toxicology, Freie Universität Berlin, Königin-Luise-Str. 2+4, 14195, Berlin, Germany
| | - Achim M Goepferich
- Department of Pharmaceutical Technology, University of Regensburg, Universitätsstr. 31, 93053, Regensburg, Germany
| | - Ferdinand P Brandl
- Department of Pharmaceutical Technology, University of Regensburg, Universitätsstr. 31, 93053, Regensburg, Germany
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131
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Jana S, Banerjee A, Sen KK, Maiti S. Gelatin-carboxymethyl tamarind gum biocomposites: In vitro characterization & anti-inflammatory pharmacodynamics. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 69:478-85. [DOI: 10.1016/j.msec.2016.07.008] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Revised: 06/16/2016] [Accepted: 07/04/2016] [Indexed: 10/21/2022]
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132
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KHEIRABADI MALIHE, BAGHERI REZA, KABIRI KOUROSH, OSSIPOV DMITRIA, JOKAR EFFAT, ASADIAN ELHAM. Improvement in Mechanical Performance of Anionic Hydrogels Using Full-Interpenetrating Polymer Network Reinforced with Graphene Oxide Nanosheets. ADVANCES IN POLYMER TECHNOLOGY 2016. [DOI: 10.1002/adv.21563] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- MALIHE KHEIRABADI
- Institute for Nanoscience and Nanotechnology; Sharif University of Technology; Tehran 11155-89694 Iran
| | - REZA BAGHERI
- Institute for Nanoscience and Nanotechnology; Sharif University of Technology; Tehran 11155-89694 Iran
- Polymeric Materials Research Group; Department of Materials Science and Engineering; Sharif University of Technology; Tehran 11155-9466 Iran
| | - KOUROSH KABIRI
- Iran Polymer and Petrochemical Institute (IPPI); Tehran 14965-115 Iran
| | - DMITRI A. OSSIPOV
- Science for Life Laboratory; Division of Polymer Chemistry; Department of Chemistry-Ångström; Uppsala University; Uppsala SE 751 21 Sweden
| | - EFFAT JOKAR
- Institute for Nanoscience and Nanotechnology; Sharif University of Technology; Tehran 11155-89694 Iran
| | - ELHAM ASADIAN
- Institute for Nanoscience and Nanotechnology; Sharif University of Technology; Tehran 11155-89694 Iran
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133
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Haq MA, Su Y, Wang D. Mechanical properties of PNIPAM based hydrogels: A review. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 70:842-855. [PMID: 27770962 DOI: 10.1016/j.msec.2016.09.081] [Citation(s) in RCA: 296] [Impact Index Per Article: 37.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Revised: 09/13/2016] [Accepted: 09/29/2016] [Indexed: 11/26/2022]
Abstract
Materials which adjust their properties in response to environmental factors such as temperature, pH and ionic strength are rapidly evolving and known as smart materials. Hydrogels formed by smart polymers have various applications. Among the smart polymers, thermoresponsive polymer poly(N-isopropylacrylamide)(PNIPAM) is very important because of its well defined structure and property specially its temperature response is closed to human body and can be finetuned as well. Mechanical properties are critical for the performance of stimuli responsive hydrogels in diverse applications. However, native PNIPAM hydrogels are very fragile and hardly useful for any practical purpose. Intense researches have been done in recent decade to enhance the mechanical features of PNIPAM hydrogel. In this review, several strategies including interpenetrating polymer network (IPN), double network (DN), nanocomposite (NC) and slide ring (SR) hydrogels are discussed in the context of PNIPAM hydrogel.
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Affiliation(s)
- Muhammad Abdul Haq
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China; Laboratory of Food Engineering, Department of Food Science & Technology, University of Karachi, Karachi, Pakistan
| | - Yunlan Su
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China.
| | - Dujin Wang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China
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134
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Co-release of dicloxacillin and thioridazine from catheter material containing an interpenetrating polymer network for inhibiting device-associated Staphylococcus aureus infection. J Control Release 2016; 241:125-134. [PMID: 27663229 DOI: 10.1016/j.jconrel.2016.09.018] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Revised: 09/13/2016] [Accepted: 09/19/2016] [Indexed: 11/22/2022]
Abstract
Approximately half of all nosocomial bloodstream infections are caused by bacterial colonization of vascular catheters. Attempts have been made to improve devices using anti-adhesive or antimicrobial coatings; however, it is often difficult to bind coatings stably to catheter materials, and the low amounts of drug in thin-film coatings limit effective long-term release. Interpenetrating polymer networks (IPNs) are polymer hybrid materials with unique drug release properties. While IPNs have been extensively investigated for use in tablet- or capsule-based drug delivery systems, the potential for use of IPNs in drug release medical devices remains largely unexplored. Here, we investigated the use of silicone-hydrogel IPNs as a catheter material to provide slow anti-bacterial drug-release functionality. IPN catheters were produced by the sequential method, using supercritical CO2 as a solvent to polymerize and crosslink poly(2-hydroxyethyl methacrylate) (PHEMA) in silicone elastomer. The design was tested against Staphylococcus aureus colonization after loading with dicloxacillin (DCX) alone or in combination with thioridazine (TDZ), the latter of which is known to synergistically potentiate the antibacterial effect of DCX against both methicillin-sensitive and methicillin-resistant S. aureus. The hydrophilic PHEMA component allowed for drug loading in the catheters by passive diffusion and provided controlled release properties. The drug-loaded IPN material inhibited bacterial growth on agar plates for up to two weeks and in blood cultures for up to five days, and it withstood 24h of seeding with resilient biofilm aggregates. The combined loading of DCX+TDZ enhanced the antibacterial efficiency in static in vitro experiments, although release analyses revealed that this effect was due to an enhanced loading capacity of DCX when co-loaded with TDZ. Lastly, the IPN catheters were tested in a novel porcine model of central venous catheter-related infection, in which drug-loaded IPN catheters were found to significantly decrease the frequency of infection.
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135
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Segale L, Mannina P, Giovannelli L, Muschert S, Pattarino F. Formulation and Coating of Alginate and Alginate-Hydroxypropylcellulose Pellets Containing Ranolazine. J Pharm Sci 2016; 105:3351-3358. [PMID: 27653554 DOI: 10.1016/j.xphs.2016.08.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Revised: 07/28/2016] [Accepted: 08/01/2016] [Indexed: 01/31/2023]
Abstract
The formulation and the coating composition of biopolymeric pellets containing ranolazine were studied to improve their technological and biopharmaceutical properties. Eudragit L100 (EU L100) and Eudragit L30 D-55-coated alginate and alginate-hydroxypropylcellulose (HPC) pellets were prepared by ionotropic gelation using 3 concentrations of HPC (0.50%, 0.65%, and 1.00% wt/wt) and applying different percentages (5%, 10%, 20%, and 30% wt/wt) of coating material. The uncoated pellets were regular in shape and had mean diameter between 1490 and 1570 μm. The rate and the entity of the swelling process were affected by the polymeric composition: increasing the HPC concentration, the structure of the pellets became more compact and slowed down the penetration of fluids. Coated alginate-HPC formulations were able to control the drug release at neutral pH: a higher quantity of HPC in the system determined a slower release of the drug. The nature of the coating polymer and the coating level applied affected the drug release in acidic environment: EU L100 gave better performance than Eudragit L30 D-55 and the best coating level was 20%. The pellets containing 0.65% of HPC and coated with 20% EU L100 represented the best formulation, able to limit the drug release in acidic environment and to control it at pH 6.8.
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Affiliation(s)
- Lorena Segale
- Dipartimento di Scienze del Farmaco, Università del Piemonte Orientale, Novara 28100, Italy.
| | - Paolo Mannina
- Dipartimento di Scienze del Farmaco, Università del Piemonte Orientale, Novara 28100, Italy
| | - Lorella Giovannelli
- Dipartimento di Scienze del Farmaco, Università del Piemonte Orientale, Novara 28100, Italy
| | - Susanne Muschert
- College of Pharmacy, Univ. Lille Nord de France, Lille 59006, France; INSERM U 1008, Lille 59006, France
| | - Franco Pattarino
- Dipartimento di Scienze del Farmaco, Università del Piemonte Orientale, Novara 28100, Italy
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136
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Xue S, Pei D, Jiang W, Mu Y, Wan X. A simple and fast formation of biodegradable poly(urethane-urea) hydrogel with high water content and good mechanical property. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.07.034] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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137
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Menzel AM. Hydrodynamic description of elastic or viscoelastic composite materials: Relative strains as macroscopic variables. Phys Rev E 2016; 94:023003. [PMID: 27627384 DOI: 10.1103/physreve.94.023003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2016] [Indexed: 06/06/2023]
Abstract
One possibility to adjust material properties to a specific need is to embed units of one substance into a matrix of another substance. Even materials that are readily tunable during operation can be generated in this way. In (visco)elastic substances, both the matrix material as well as the inclusions and/or their immediate environment can be dynamically deformed. If the typical dynamic response time of the inclusions and their surroundings approach the macroscopic response time, their deformation processes need to be included into a dynamic macroscopic characterization. Along these lines, we present a hydrodynamic description of (visco)elastic composite materials. For this purpose, additional strain variables reflect the state of the inclusions and their immediate environment. These additional strain variables in general are not set by a coarse-grained macroscopic displacement field. Apart from that, during our derivation, we also include the macroscopic variables of relative translations and relative rotations that were previously introduced in different contexts. As a central point, our approach reveals and classifies the importance of a macroscopic variable termed relative strains. We analyze two simplified minimal example geometries as an illustration.
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Affiliation(s)
- Andreas M Menzel
- Institut für Theoretische Physik II: Weiche Materie, Heinrich-Heine-Universität Düsseldorf, D-40225 Düsseldorf, Germany
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138
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Rehmani S, Ahmad M, Minhas MU, Anwar H, Zangi MIUD, Sohail M. Development of natural and synthetic polymer-based semi-interpenetrating polymer network for controlled drug delivery: optimization and in vitro evaluation studies. Polym Bull (Berl) 2016. [DOI: 10.1007/s00289-016-1743-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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139
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Beddoes CM, Whitehouse MR, Briscoe WH, Su B. Hydrogels as a Replacement Material for Damaged Articular Hyaline Cartilage. MATERIALS (BASEL, SWITZERLAND) 2016; 9:E443. [PMID: 28773566 PMCID: PMC5456752 DOI: 10.3390/ma9060443] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/05/2016] [Revised: 05/24/2016] [Accepted: 05/30/2016] [Indexed: 12/12/2022]
Abstract
Hyaline cartilage is a strong durable material that lubricates joint movement. Due to its avascular structure, cartilage has a poor self-healing ability, thus, a challenge in joint recovery. When severely damaged, cartilage may need to be replaced. However, currently we are unable to replicate the hyaline cartilage, and as such, alternative materials with considerably different properties are used. This results in undesirable side effects, including inadequate lubrication, wear debris, wear of the opposing articular cartilage, and weakening of the surrounding tissue. With the number of surgeries for cartilage repair increasing, a need for materials that can better mimic cartilage, and support the surrounding material in its typical function, is becoming evident. Here, we present a brief overview of the structure and properties of the hyaline cartilage and the current methods for cartilage repair. We then highlight some of the alternative materials under development as potential methods of repair; this is followed by an overview of the development of tough hydrogels. In particular, double network (DN) hydrogels are a promising replacement material, with continually improving physical properties. These hydrogels are coming closer to replicating the strength and toughness of the hyaline cartilage, while offering excellent lubrication. We conclude by highlighting several different methods of integrating replacement materials with the native joint to ensure stability and optimal behaviour.
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Affiliation(s)
- Charlotte M Beddoes
- School of Oral and Dental Sciences, University of Bristol, Lower Maudlin Street, Bristol BS1 2LY, UK.
| | - Michael R Whitehouse
- Musculoskeletal Research Unit, University of Bristol, Level 1 Learning and Research Building, Bristol BS10 5NB, UK.
| | - Wuge H Briscoe
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK.
| | - Bo Su
- School of Oral and Dental Sciences, University of Bristol, Lower Maudlin Street, Bristol BS1 2LY, UK.
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140
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Glucomannan based polyurethanes: A critical short review of recent advances and future perspectives. Int J Biol Macromol 2016; 87:229-36. [DOI: 10.1016/j.ijbiomac.2016.02.058] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Revised: 02/20/2016] [Accepted: 02/23/2016] [Indexed: 11/18/2022]
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141
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Haixia W, Bin M, Xi C, Lian Q, Zheng X. Preparation and characterization of ternary composite films of polyvinyl alcohol/sodium alginate/TiO2. RUSS J APPL CHEM+ 2016. [DOI: 10.1134/s10704272160020191] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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142
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Preparation of Uniform-Sized and Dual Stimuli-Responsive Microspheres of Poly( N-Isopropylacrylamide)/Poly(Acrylic acid) with Semi-IPN Structure by One-Step Method. Polymers (Basel) 2016; 8:polym8030090. [PMID: 30979184 PMCID: PMC6432549 DOI: 10.3390/polym8030090] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Revised: 01/31/2016] [Accepted: 03/14/2016] [Indexed: 02/06/2023] Open
Abstract
A novel strategy was developed to synthesize uniform semi-interpenetrating polymer network (semi-IPN) microspheres by premix membrane emulsification combined with one-step polymerization. Synthesized poly(acrylic acid) (PAAc) polymer chains were added prior to the inner water phase, which contained N-isopropylacrylamide (NIPAM) monomer, N,N′-methylene bisacrylamide (MBA) cross-linker, and ammonium persulfate (APS) initiator. The mixtures were pressed through a microporous membrane to form a uniform water-in-oil emulsion. By crosslinking the NIPAM in a PAAc-containing solution, microspheres with temperature- and pH-responsive properties were fabricated. The semi-IPN structure and morphology of the microspheres were confirmed by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The average diameter of the obtained microspheres was approximately 6.5 μm, with Span values of less than 1. Stimuli-responsive behaviors of the microspheres were studied by the cloud-point method. The results demonstrated that semi-IPN microspheres could respond independently to both pH and temperature changes. After storing in a PBS solution (pH 7.0) at 4 °C for 6 months, the semi-IPN microspheres remained stable without a change in morphology or particle size. This study demonstrated a promising method for controlling the synthesis of semi-IPN structure microspheres with a uniform size and multiple functionalities.
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143
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Dragan ES, Cocarta AI, Gierszewska M. Designing novel macroporous composite hydrogels based on methacrylic acid copolymers and chitosan and in vitro assessment of lysozyme controlled delivery. Colloids Surf B Biointerfaces 2016; 139:33-41. [DOI: 10.1016/j.colsurfb.2015.12.011] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2015] [Revised: 11/12/2015] [Accepted: 12/06/2015] [Indexed: 12/16/2022]
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144
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Rheological behavior and Ibuprofen delivery applications of pH responsive composite alginate hydrogels. Colloids Surf B Biointerfaces 2016; 139:211-8. [DOI: 10.1016/j.colsurfb.2015.12.013] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2015] [Revised: 11/29/2015] [Accepted: 12/07/2015] [Indexed: 11/19/2022]
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145
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Rikkou-Kalourkoti M, Kitiri EN, Patrickios CS, Leontidis E, Constantinou M, Constantinides G, Zhang X, Papadakis CM. Double Networks Based on Amphiphilic Cross-Linked Star Block Copolymer First Conetworks and Randomly Cross-Linked Hydrophilic Second Networks. Macromolecules 2016. [DOI: 10.1021/acs.macromol.5b02490] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | - Elina N. Kitiri
- Department
of Chemistry, University of Cyprus, P.O. Box 20537, 1678 Nicosia, Cyprus
| | - Costas S. Patrickios
- Department
of Chemistry, University of Cyprus, P.O. Box 20537, 1678 Nicosia, Cyprus
| | | | - Marios Constantinou
- Research
Unit for Nanostructured Materials Systems, Department of Mechanical
Engineering and Materials Science and Engineering, Cyprus University of Technology, P.O.
Box 50329, 3603 Limassol, Cyprus
| | - Georgios Constantinides
- Research
Unit for Nanostructured Materials Systems, Department of Mechanical
Engineering and Materials Science and Engineering, Cyprus University of Technology, P.O.
Box 50329, 3603 Limassol, Cyprus
| | - Xiaohan Zhang
- Fachgebiet
Physik weicher Materie, Physik-Department, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany
| | - Christine M. Papadakis
- Fachgebiet
Physik weicher Materie, Physik-Department, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany
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146
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Li B, He M, Ramirez L, George J, Wang J. Multifunctional Hydrogel Microparticles by Polymer-Assisted Photolithography. ACS APPLIED MATERIALS & INTERFACES 2016; 8:4158-4164. [PMID: 26821173 DOI: 10.1021/acsami.5b11883] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Although standard lithography has been the most common technique in micropatterning, ironically it has not been adopted to produce multifunctional hydrogel microparticles, which are highly useful for bioassays. We address this issue by developing a negative photoresist-like polymer system, which is basically comprised of polyethylene glycol (PEG) triacrylate as cross-linking units and long-chain polyvinylpyrrolidone (PVP) as the supporting scaffold. We leverage standard lithography to manufacture multilayer microparticles that are intrinsically hydrophilic, low-autofluorescent, and chemically reactive. The versatility of the microparticles is demonstrated to be color-encoded, pore-controllable, bioactive, and potentially used as a DNA bioassay.
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Affiliation(s)
- Bin Li
- Department of Chemistry, University at Albany, State University of New York , Albany, New York 12222, United States
| | - Muhan He
- Department of Chemistry, University at Albany, State University of New York , Albany, New York 12222, United States
| | - Lisa Ramirez
- Department of Chemistry, University at Albany, State University of New York , Albany, New York 12222, United States
| | - Justin George
- Department of Chemistry, University at Albany, State University of New York , Albany, New York 12222, United States
| | - Jun Wang
- Department of Chemistry, University at Albany, State University of New York , Albany, New York 12222, United States
- Cancer Research Center, University at Albany, State University of New York , Rensselaer, New York 12144, United States
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147
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Glassman MJ, Avery RK, Khademhosseini A, Olsen BD. Toughening of Thermoresponsive Arrested Networks of Elastin-Like Polypeptides To Engineer Cytocompatible Tissue Scaffolds. Biomacromolecules 2016; 17:415-26. [PMID: 26789536 PMCID: PMC4752000 DOI: 10.1021/acs.biomac.5b01210] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Formulation of tissue engineering or regenerative scaffolds from simple bioactive polymers with tunable structure and mechanics is crucial for the regeneration of complex tissues, and hydrogels from recombinant proteins, such as elastin-like polypeptides (ELPs), are promising platforms to support these applications. The arrested phase separation of ELPs has been shown to yield remarkably stiff, biocontinuous, nanostructured networks, but these gels are limited in applications by their relatively brittle nature. Here, a gel-forming ELP is chain-extended by telechelic oxidative coupling, forming extensible, tough hydrogels. Small angle scattering indicates that the chain-extended polypeptides form a fractal network of nanoscale aggregates over a broad concentration range, accessing moduli ranging from 5 kPa to over 1 MPa over a concentration range of 5-30 wt %. These networks exhibited excellent erosion resistance and allowed for the diffusion and release of encapsulated particles consistent with a bicontinuous, porous structure with a broad distribution of pore sizes. Biofunctionalized, toughened networks were found to maintain the viability of human mesenchymal stem cells (hMSCs) in 2D, demonstrating signs of osteogenesis even in cell media without osteogenic molecules. Furthermore, chondrocytes could be readily mixed into these gels via thermoresponsive assembly and remained viable in extended culture. These studies demonstrate the ability to engineer ELP-based arrested physical networks on the molecular level to form reinforced, cytocompatible hydrogel matrices, supporting the promise of these new materials as candidates for the engineering and regeneration of stiff tissues.
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Affiliation(s)
- Matthew J. Glassman
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Reginald K. Avery
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- Biomaterials Innovation Research Center, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Cambridge, Massachusetts 02139, United States
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, Massachusetts 02115, United States
- Harvard–MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Ali Khademhosseini
- Biomaterials Innovation Research Center, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Cambridge, Massachusetts 02139, United States
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, Massachusetts 02115, United States
- Harvard–MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Bradley D. Olsen
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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148
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Murakami T, Brown HR, Hawker CJ. One‐pot fabrication of robust interpenetrating hydrogels via orthogonal click reactions. ACTA ACUST UNITED AC 2016. [DOI: 10.1002/pola.28021] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Takuya Murakami
- Materials Research LaboratoryUniversity of CaliforniaSanta Barbara California93016
- Yokkaichi Research Center, JSR Corporation Mie510‐8522 Japan
| | - Hugh R. Brown
- ARC Centre of Excellence in Electromaterials Science and Intelligent Polymer Research Institute, University of WollongongWollongong New South Wales2522 Australia
| | - Craig J. Hawker
- Materials Research LaboratoryUniversity of CaliforniaSanta Barbara California93016
- Materials Department, and Department of Chemistry and Biochemistry, University of CaliforniaSanta Barbara California93016
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149
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Liu XJ, Li HQ, Zhang BY, Wang YJ, Ren XY, Guan S, Hui Gao G. Highly stretchable and tough pH-sensitive hydrogels with reversible swelling and recoverable deformation. RSC Adv 2016. [DOI: 10.1039/c5ra24414e] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Stimuli-responsive hydrogels are becoming increasingly important for controlled drug delivery, biosensing, and tissue engineering. It would be much advantageous for intelligent hydrogels if they exhibit superior mechanical performances.
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Affiliation(s)
- Xue Jiao Liu
- Engineering Research Center of Synthetic Resin and Special Fiber
- Ministry of Education
- Advanced Institute of Materials Science
- Changchun University of Technology
- Changchun 130012
| | - Hai Qiang Li
- Engineering Research Center of Synthetic Resin and Special Fiber
- Ministry of Education
- Advanced Institute of Materials Science
- Changchun University of Technology
- Changchun 130012
| | - Bao Yuan Zhang
- Engineering Research Center of Synthetic Resin and Special Fiber
- Ministry of Education
- Advanced Institute of Materials Science
- Changchun University of Technology
- Changchun 130012
| | - Ya Jun Wang
- Engineering Research Center of Synthetic Resin and Special Fiber
- Ministry of Education
- Advanced Institute of Materials Science
- Changchun University of Technology
- Changchun 130012
| | - Xiu Yan Ren
- Engineering Research Center of Synthetic Resin and Special Fiber
- Ministry of Education
- Advanced Institute of Materials Science
- Changchun University of Technology
- Changchun 130012
| | - Shuang Guan
- Engineering Research Center of Synthetic Resin and Special Fiber
- Ministry of Education
- Advanced Institute of Materials Science
- Changchun University of Technology
- Changchun 130012
| | - Guang Hui Gao
- Engineering Research Center of Synthetic Resin and Special Fiber
- Ministry of Education
- Advanced Institute of Materials Science
- Changchun University of Technology
- Changchun 130012
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150
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Simple and efficient approach for recycling of fine acrylic-based superabsorbent waste. Polym Bull (Berl) 2015. [DOI: 10.1007/s00289-015-1538-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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