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Patients' Stem Cells Differentiation in a 3D Environment as a Promising Experimental Tool for the Study of Amyotrophic Lateral Sclerosis. Int J Mol Sci 2022; 23:ijms23105344. [PMID: 35628156 PMCID: PMC9141644 DOI: 10.3390/ijms23105344] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 05/03/2022] [Accepted: 05/09/2022] [Indexed: 12/17/2022] Open
Abstract
Amyotrophic lateral sclerosis (ALS) is a neurodegenerative disease (NDD) that affects motor neurons, causing weakness, muscle atrophy and spasticity. Unfortunately, there are only symptomatic treatments available. Two important innovations in recent years are three-dimensional (3D) bioprinting and induced pluripotent stem cells (iPSCs). The aim of this work was to demonstrate the robustness of 3D cultures for the differentiation of stem cells for the study of ALS. We reprogrammed healthy and sALS peripheral blood mononuclear cells (PBMCs) in iPSCs and differentiated them in neural stem cells (NSCs) in 2D. NSCs were printed in 3D hydrogel-based constructs and subsequently differentiated first in motor neuron progenitors and finally in motor neurons. Every step of differentiation was tested for cell viability and characterized by confocal microscopy and RT-qPCR. Finally, we tested the electrophysiological characteristics of included NSC34. We found that NSCs maintained good viability during the 3D differentiation. Our results suggest that the hydrogel does not interfere with the correct differentiation process or with the electrophysiological features of the included cells. Such evidence confirmed that 3D bioprinting can be considered a good model for the study of ALS pathogenesis.
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52
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Durpekova S, Bergerova ED, Hanusova D, Dusankova M, Sedlarik V. Eco-friendly whey/polysaccharide-based hydrogel with poly(lactic acid) for improvement of agricultural soil quality and plant growth. Int J Biol Macromol 2022; 212:85-96. [PMID: 35561864 DOI: 10.1016/j.ijbiomac.2022.05.053] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 05/06/2022] [Accepted: 05/06/2022] [Indexed: 11/26/2022]
Abstract
A set of renewable and biodegradable hydrogels based on acid whey and cellulose derivatives blended with poly(lactic acid) (PLA) were designed as eco-friendly biopolymeric material for sustainable agricultural applications. The physico-chemical properties of the hydrogel were evaluated using scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), and rheological measurements. The effect of the whey/polysaccharide/PLA hydrogel on soil quality improvement (water retention study, biodegradability, loading capacity and release of the fertilizers) and the growth pattern of Raphanus sativus and Phaseolus vulgaris has been also studied. The addition of PLA has been found to improve mechanical properties of the hydrogel. The introduction of 20% wt PLA extended decomposition time of hydrogels by 25% which makes the material more stable in the environment and maintaining the soil humidity for longer. The increasing the amount of PLA led to a rise in hydrogel viscosity brought about better entrapment efficiency of the fertilizers (86-92% for KNO3 and 87-96% for urea, resp.) compared to control (82% for KNO3 and 85% for urea, resp.). The novel hydrogels with swelling ratio of up to 500% showed potential as a sustainable water reservoir for plants improving water retention capacity of the soil by 30%.
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Affiliation(s)
- Silvie Durpekova
- Centre of Polymer Systems, University Institute, Tomas Bata University in Zlin, Tr. T. Bati 5678, 760 01 Zlin, Czech Republic.
| | - Eva Domincova Bergerova
- Centre of Polymer Systems, University Institute, Tomas Bata University in Zlin, Tr. T. Bati 5678, 760 01 Zlin, Czech Republic
| | - Dominika Hanusova
- Centre of Polymer Systems, University Institute, Tomas Bata University in Zlin, Tr. T. Bati 5678, 760 01 Zlin, Czech Republic
| | - Miroslava Dusankova
- Centre of Polymer Systems, University Institute, Tomas Bata University in Zlin, Tr. T. Bati 5678, 760 01 Zlin, Czech Republic
| | - Vladimir Sedlarik
- Centre of Polymer Systems, University Institute, Tomas Bata University in Zlin, Tr. T. Bati 5678, 760 01 Zlin, Czech Republic
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53
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Demirci G, Niedźwiedź MJ, Kantor-Malujdy N, El Fray M. Elastomer-Hydrogel Systems: From Bio-Inspired Interfaces to Medical Applications. Polymers (Basel) 2022; 14:1822. [PMID: 35566990 PMCID: PMC9104885 DOI: 10.3390/polym14091822] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2022] [Revised: 04/13/2022] [Accepted: 04/27/2022] [Indexed: 12/10/2022] Open
Abstract
Novel advanced biomaterials have recently gained great attention, especially in minimally invasive surgical techniques. By applying sophisticated design and engineering methods, various elastomer-hydrogel systems (EHS) with outstanding performance have been developed in the last decades. These systems composed of elastomers and hydrogels are very attractive due to their high biocompatibility, injectability, controlled porosity and often antimicrobial properties. Moreover, their elastomeric properties and bioadhesiveness are making them suitable for soft tissue engineering. Herein, we present the advances in the current state-of-the-art design principles and strategies for strong interface formation inspired by nature (bio-inspiration), the diverse properties and applications of elastomer-hydrogel systems in different medical fields, in particular, in tissue engineering. The functionalities of these systems, including adhesive properties, injectability, antimicrobial properties and degradability, applicable to tissue engineering will be discussed in a context of future efforts towards the development of advanced biomaterials.
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Affiliation(s)
| | | | | | - Miroslawa El Fray
- Department of Polymer and Biomaterials Science, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology in Szczecin, Al. Piastów 45, 70-311 Szczecin, Poland; (G.D.); (M.J.N.); (N.K.-M.)
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Alves-Lima D, Li X, Coulson B, Nesling E, Ludlam G, Degl’Innocenti R, Dawson R, Peruffo M, Lin H. Evaluation of water states in thin proton exchange membrane manufacturing using terahertz time-domain spectroscopy. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.120329] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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55
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Singh P, Verma C, Mukhopadhyay S, Gupta A, Gupta B. Preparation of thyme oil loaded κ-carrageenan-polyethylene glycol hydrogel membranes as wound care system. Int J Pharm 2022; 618:121661. [PMID: 35292394 DOI: 10.1016/j.ijpharm.2022.121661] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 02/16/2022] [Accepted: 03/09/2022] [Indexed: 12/20/2022]
Abstract
The present study is aimed at fabricating thyme oil loaded hydrogel membranes composed of κ-carrageenan (CG) and polyethylene glycol (PEG), which can provide moist environment and prevent infections for rapid wound healing. Membranes were prepared with different amounts of PEG via solvent casting technique under ambient conditions. Physicochemical properties of CG-PEG membranes as a function of the PEG content were investigated. The surface morphology of membranes displayed smoother surfaces with increasing PEG content up to 40%. In addition, the interaction of PEG with CG polymer chains was evaluated in terms of Free and bound PEG fraction within the membrane matrix. Furthermore, thyme oil (TO) was added to enhance the antibacterial properties of CG-PEG membranes. These membranes showed >95% antimicrobial activity against both gram-positive and gram-negative bacteria depending on the TO content. Suggesting the great potential of these membranes as a strong candidate for providing an effective antimicrobial nature in human healthcare.
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Affiliation(s)
- Pratibha Singh
- Bioengineering Laboratory, Department of Textile and Fiber Engineering, Indian Institute of Technology Delhi, New Delhi 110016, India
| | - Chetna Verma
- Bioengineering Laboratory, Department of Textile and Fiber Engineering, Indian Institute of Technology Delhi, New Delhi 110016, India
| | - Samrat Mukhopadhyay
- Bioengineering Laboratory, Department of Textile and Fiber Engineering, Indian Institute of Technology Delhi, New Delhi 110016, India
| | - Amlan Gupta
- Department of Pathology, Sikkim Manipal Institute of Medical Sciences, Tadong, Gangtok, Sikkim 737102, India
| | - Bhuvanesh Gupta
- Bioengineering Laboratory, Department of Textile and Fiber Engineering, Indian Institute of Technology Delhi, New Delhi 110016, India.
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56
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Characterization of Alginate–Gelatin–Cholesteryl Ester Liquid Crystals Bioinks for Extrusion Bioprinting of Tissue Engineering Scaffolds. Polymers (Basel) 2022; 14:polym14051021. [PMID: 35267843 PMCID: PMC8915124 DOI: 10.3390/polym14051021] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 02/22/2022] [Accepted: 02/26/2022] [Indexed: 11/26/2022] Open
Abstract
Tissue engineering (TE) is an innovative approach to tackling many diseases and body parts that need to be replaced by developing artificial tissues and organs. Bioinks play an important role in the success of various TE applications. A bioink refers to a combination of a living cell, biomaterials, and bioactive molecules deposited in a layer-by-layer form to fabricate tissue-like structures. The research on bioink attempts to offer a 3D complex architecture and control cellular behavior that improve cell physical properties and viability. This research proposed a new multi-material bioink based on alginate (A), gelatin (G), and cholesteryl ester liquid crystals (CELC) biomaterials, namely (AGLC) bioinks. The development of AGLC was initiated with the optimization of different concentrations of A and G gels to obtain a printable formulation of AG gels. Subsequently, the influences of different concentrations of CELC with AG gels were investigated by using a microextrusion-based 3D bioprinting system to obtain a printed structure with high shape fidelity and minimum width. The AGLC bioinks were formulated using AG gel with 10% weight/volume (w/v) of A and 50% w/v G (AG10:50) and 1%, 5%, 10%, 20%, and 40% of CELC, respectively. The AGLC bioinks yield a high printability and resolution blend. The printed filament has a minimum width of 1.3 mm at a 1 mL/min extrusion rate when the A equals 10% w/v, G equals 50% w/v, and CELC equals 40% v/v (AGLC40). Polymerization of the AGLC bioinks with calcium (Ca2+) ions shows well-defined and more stable structures in the post-printing process. The physicochemical and viability properties of the AGLC bioinks were examined by FTIR, DSC, contact angle, FESEM, MTT assay, and cell interaction evaluation methods. The FTIR spectra of the AGLC bioinks exhibit a combination of characteristics vibrations of AG10:50 and CELC. The DSC analysis indicates the high thermal stability of the bioinks. Wettability analysis shows a reduction in the water absorption ability of the AGLC bioinks. FESEM analysis indicates that the surface morphologies of the bioinks exhibit varying microstructures. In vitro cytotoxicity by MTT assay shows the ability of the bioinks to support the biological activity of HeLa cells. The AGLC bioinks show average cell viability of 82.36% compared to the control (90%). Furthermore, cultured cells on the surface of AGLC bioinks showed that bioinks provide favorable interfaces for cell attachment.
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Han Z, Wang P, Lu Y, Jia Z, Qu S, Yang W. A versatile hydrogel network-repairing strategy achieved by the covalent-like hydrogen bond interaction. SCIENCE ADVANCES 2022; 8:eabl5066. [PMID: 35196089 PMCID: PMC8865770 DOI: 10.1126/sciadv.abl5066] [Citation(s) in RCA: 52] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Hydrogen bond engineering is widely exploited to impart stretchability, toughness, and self-healing capability to hydrogels. However, the enhancement effect of conventional hydrogen bonds is severely limited by their weak interaction strength. In nature, some organisms tolerate extreme conditions due to the strong hydrogen bond interactions induced by trehalose. Here, we report a trehalose network-repairing strategy achieved by the covalent-like hydrogen bonding interactions to improve the hydrogels' mechanical properties while simultaneously enabling them to tolerate extreme environmental conditions and retain synthetic simplicity, which proves to be useful for various kinds of hydrogels. The mechanical properties of trehalose-modified hydrogels including strength, stretchability, and fracture toughness are substantially enhanced under a wide range of temperatures. After dehydration, the modified hydrogels maintain their hyperelasticity and functions, while the unmodified hydrogels collapse. This strategy provides a versatile methodology for synthesizing extremotolerant, highly stretchable, and tough hydrogels, which expand their potential applications to various conditions.
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Affiliation(s)
| | - Peng Wang
- Corresponding author. (P.W.); (S.Q.)
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58
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Merivaara A, Kekkonen J, Monola J, Koivunotko E, Savolainen M, Silvast T, Svedström K, Diaz A, Holler M, Korhonen O, Yliperttula M, Valkonen S. Near-infrared analysis of nanofibrillated cellulose aerogel manufacturing. Int J Pharm 2022; 617:121581. [PMID: 35176331 DOI: 10.1016/j.ijpharm.2022.121581] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 02/09/2022] [Accepted: 02/10/2022] [Indexed: 12/30/2022]
Abstract
Biomaterial aerogel fabrication by freeze-drying must be further improved to reduce the costs of lengthy freeze-drying cycles and to avoid the formation of spongy cryogels and collapse of the aerogel structures. Residual water content is a critical quality attribute of the freeze-dried product, which can be monitored in-line with near-infrared (NIR) spectroscopy. Predictive models of NIR have not been previously applied for biomaterials and the models were mostly focused on the prediction of only one formulation at a time. We recorded NIR spectra of different nanofibrillated cellulose (NFC) hydrogel formulations during the secondary drying and set up a partial least square regression model to predict their residual water contents. The model can be generalized to measure residual water of formulations with different NFC concentrations and the excipients, and the NFC fiber concentrations and excipients can be separated with the principal component analysis. Our results provide valuable information about the freeze-drying of biomaterials and aerogel fabrication, and how NIR spectroscopy can be utilized in the optimization of residual water content.
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Affiliation(s)
- Arto Merivaara
- Division of Pharmaceutical Biosciences, Faculty of Pharmacy, University of Helsinki, P.O. Box 56, 00014 Helsinki, Finland.
| | - Jere Kekkonen
- Division of Pharmaceutical Biosciences, Faculty of Pharmacy, University of Helsinki, P.O. Box 56, 00014 Helsinki, Finland; School of Pharmacy, University of Eastern Finland, 70210 Kuopio, Finland
| | - Julia Monola
- Division of Pharmaceutical Biosciences, Faculty of Pharmacy, University of Helsinki, P.O. Box 56, 00014 Helsinki, Finland; School of Pharmacy, University of Eastern Finland, 70210 Kuopio, Finland
| | - Elle Koivunotko
- Division of Pharmaceutical Biosciences, Faculty of Pharmacy, University of Helsinki, P.O. Box 56, 00014 Helsinki, Finland
| | - Marko Savolainen
- Optical measurements, VTT Technical Research Centre of Finland, Finland
| | - Tuomo Silvast
- SIB Labs, Faculty of Science and Forestry, University of Eastern Finland, Kuopio, Finland
| | - Kirsi Svedström
- Department of Physics, University of Helsinki, P.O. Box 64, 00014 Helsinki, Finland
| | - Ana Diaz
- Paul Scherrer Institute, Forschungsstrasse 111, 5232 Villigen PSI, Switzerland
| | - Mirko Holler
- Paul Scherrer Institute, Forschungsstrasse 111, 5232 Villigen PSI, Switzerland
| | - Ossi Korhonen
- School of Pharmacy, University of Eastern Finland, 70210 Kuopio, Finland
| | - Marjo Yliperttula
- Division of Pharmaceutical Biosciences, Faculty of Pharmacy, University of Helsinki, P.O. Box 56, 00014 Helsinki, Finland.
| | - Sami Valkonen
- Division of Pharmaceutical Biosciences, Faculty of Pharmacy, University of Helsinki, P.O. Box 56, 00014 Helsinki, Finland; School of Pharmacy, University of Eastern Finland, 70210 Kuopio, Finland
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59
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Chen Z, Tang J, Zhang N, Chen Y, Chen Y, Li H, Liu H. Dual-network sodium alginate/polyacrylamide/laponite nanocomposite hydrogels with high toughness and cyclic mechano-responsiveness. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2021.127867] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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60
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Khalili MH, Afsar A, Zhang R, Wilson S, Dossi E, Goel S, Impey SA, Aria AI. Thermal response of multi-layer UV crosslinked PEGDA hydrogels. Polym Degrad Stab 2022. [DOI: 10.1016/j.polymdegradstab.2021.109805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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61
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Bio and photoactive starch/MnO 2 and starch/MnO 2/cotton hydrogel nanocomposite. Int J Biol Macromol 2021; 193:681-692. [PMID: 34717975 DOI: 10.1016/j.ijbiomac.2021.10.168] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 10/19/2021] [Accepted: 10/21/2021] [Indexed: 01/02/2023]
Abstract
Here a starch and starch hydrogel nanocomposite and superabsorbent cotton fabric was fabricated and characterized. The optimized starch hydrogel nanocomposite was synthesized by using 0.008 M potassium permanganate, 0.7 g starch and 0.6 M sodium hydroxide at 50-55 °C. potassium permanganate as a strong and inexpensive oxidizing agent were used to potentially nano cross-link the starch molecular chains and graft the starch to cellulose molecular chains along with synthesizing manganese dioxide nanoparticles (MnO2) to further obtain antibacterial, antifungal and photocatalytic properties. The stability of products in water and the water absorption indicated the highest water content of 800% for the optimum sample. The same materials and conditions were also applied to the cotton fabric to produce a superabsorbent fabric. The simple one-step synthesis procedure, in-situ production of nanoparticles, cost-effectiveness and having desired features including photocatalytic, antibacterial properties of 93% against S. aureus, and biocompatibility make the starch hydrogel nanocomposite a suitable candidate for various applications such as agriculture, medical, textile engineering and water treatment.
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62
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Zhuo Y, Chen J, Xiao S, Li T, Wang F, He J, Zhang Z. Gels as emerging anti-icing materials: a mini review. MATERIALS HORIZONS 2021; 8:3266-3280. [PMID: 34842262 DOI: 10.1039/d1mh00910a] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Gel materials have drawn great attention recently in the anti-icing research community due to their remarkable potential for reducing ice adhesion, inhibiting ice nucleation, and restricting ice propagation. Although the current anti-icing gels are in their infancy and far from practical applications due to poor durability, their outstanding prospect of icephobicity has already shed light on a new group of emerging anti-icing materials. There is a need for a timely review to consolidate the new trends and foster the development towards dedicated applications. Starting from the stage of icing, we first survey the relevant anti-icing strategies. The latest anti-icing gels are then categorized by their liquid phases into organogels, hydrogels, and ionogels. At the same time, the current research focuses, anti-icing mechanisms and shortcomings affiliated with each category are carefully analysed. Based upon the reported state-of-the-art anti-icing research and our own experience in polymer-based anti-icing materials, suggestions for the future development of the anti-icing gels are presented, including pathways to enhance durability, the need to build up the missing fundamentals, and the possibility to enable stimuli-responsive properties. The primary aim of this review is to motivate researchers in both the anti-icing and gel research communities to perform a synchronized effort to rapidly advance the understanding and making of gel-based next generation anti-icing materials.
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Affiliation(s)
- Yizhi Zhuo
- NTNU Nanomechanical Lab, Department of Structural Engineering, Norwegian University of Science and Technology (NTNU), Trondheim 7491, Norway.
| | - Jianhua Chen
- College of Chemistry, Chemical Engineering and Environment, Minnan Normal University, Zhangzhou 363000, China
| | - Senbo Xiao
- NTNU Nanomechanical Lab, Department of Structural Engineering, Norwegian University of Science and Technology (NTNU), Trondheim 7491, Norway.
| | - Tong Li
- NTNU Nanomechanical Lab, Department of Structural Engineering, Norwegian University of Science and Technology (NTNU), Trondheim 7491, Norway.
| | - Feng Wang
- NTNU Nanomechanical Lab, Department of Structural Engineering, Norwegian University of Science and Technology (NTNU), Trondheim 7491, Norway.
| | - Jianying He
- NTNU Nanomechanical Lab, Department of Structural Engineering, Norwegian University of Science and Technology (NTNU), Trondheim 7491, Norway.
| | - Zhiliang Zhang
- NTNU Nanomechanical Lab, Department of Structural Engineering, Norwegian University of Science and Technology (NTNU), Trondheim 7491, Norway.
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63
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Volkova N, Berillo D. Water Uptake as a Crucial Factor on the Properties of Cryogels of Gelatine Cross-Linked by Dextran Dialdehyde. Gels 2021; 7:159. [PMID: 34698152 PMCID: PMC8544549 DOI: 10.3390/gels7040159] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2021] [Revised: 09/27/2021] [Accepted: 09/28/2021] [Indexed: 12/19/2022] Open
Abstract
We investigated the water sorption properties of macroporous cryogels of gelatine (Gel) and dextran dialdehyde (DDA) prepared via cryogelation at 260 K and following the freeze drying processes. Water vapour sorption isotherms for aerogels were studied at 293 K by two independent methods: static-gravimetric and dynamic vapour sorption (DVS) over a water activity range of 0.11-1.0. Experimental data were fitted by use of the Brunauer-Emmett-Teller (BET) and Guggenheim-Anderson-de Boer (GAB) models. The BET model (for a water activity range of 0.1 ≤ p/po ≤ 0.5) was used to calculate the sorption parameters of the studied cryogels (the monolayer capacity, surface area and energy of interaction). In comparison with BET, the GAB model can be applied for the whole range of water activities (0.1 ≤ p/po ≤ 0.95). This model gave an almost perfect correlation between the experimental and calculated sorption isotherms using nonlinear least squares fitting (NLSF). Confocal Laser Scanning Microscopy (CLSM) was used to confirm the structural differences between various DDA:Gel cryogel compositions. Thermogravimetric analysis and DSC data for aerogels DDA:Gel provided information regarding the bonded water loss, relative remaining water content of the material and the temperature of decomposition. Estimation of the amount of bound water in the cryogels after the freeze drying process as well as after the cycle of treatment of cryogels with high humidity and drying was performed using DSC. The results of the DSC determinations showed that cryogels with higher gelatin content had higher levels of bonded water.
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Affiliation(s)
- Natalia Volkova
- Department of Biotechnology, Lund University, P.O. Box 124, 22 100 Lund, Sweden;
- Department of Solid State Physics, Lund University, P.O. Box 118, 22 100 Lund, Sweden
| | - Dmitriy Berillo
- Department of Biotechnology, Lund University, P.O. Box 124, 22 100 Lund, Sweden;
- Department of Pharmaceutical and Toxicological Chemistry, Pharmacognosy and Botany School of Pharmacy, Asfendiyarov Kazakh National Medical University, Almaty 050000, Kazakhstan
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64
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Renewable Mixed Hydrogels Based on Polysaccharide and Protein for Release of Agrochemicals and Soil Conditioning. SUSTAINABILITY 2021. [DOI: 10.3390/su131810439] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
The study deals with the combination of biopolymers to develop hydrogels intended for agriculture application. The aim is to propose a renewable and eco-compatible solution to enhance agrochemicals and water efficiency and contribute to maintaining soil fertility. We developed a set of hydrogels based on casein and chitosan for water retention and release of agrochemicals, in particular nitrogen fertilizer urea. The weight ratio of biopolymers, from 0.5 to 2, was investigated to understand the influence of their content on the morphology, swelling, swelling-drying cycles, and water retention in soil. The average content of urea in the hydrogels was 30% of the total weight, and up to 80% was released in the soil in 50 days. The biodegradation of the hydrogels in soil has been investigated by the burial method and monitoring the release of CO2. Results demonstrated that by increasing the content of chitosan, the biodegradation time is prolonged up to 20% in 90 days. The obtained results support the ultimate purpose of the work that the combination of two biopolymers at proper weight ratio could be a valid alternative of the marketed hydrogels with the final goal to promote soil fertility and water retention and prolong biodegradation.
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65
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Brumberg V, Astrelina T, Malivanova T, Samoilov A. Modern Wound Dressings: Hydrogel Dressings. Biomedicines 2021; 9:1235. [PMID: 34572421 PMCID: PMC8472341 DOI: 10.3390/biomedicines9091235] [Citation(s) in RCA: 120] [Impact Index Per Article: 40.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 08/30/2021] [Accepted: 08/31/2021] [Indexed: 02/07/2023] Open
Abstract
Chronic wounds do not progress through the wound healing process in a timely manner and are considered a burden for healthcare system; they are also the most common reason for decrease in patient quality of life. Traditional wound dressings e.g., bandages and gauzes, although highly absorbent and effective for dry to mild, exudating wounds, require regular application, which therefore can cause pain upon dressing change. In addition, they have poor adhesional properties and cannot provide enough drainage for the wound. In this regard, the normalization of the healing process in chronic wounds is an extremely urgent task of public health and requires the creation and implementation of affordable dressings for patients with chronic wounds. Modern wound dressings (WDs) are aimed to solve these issues. At the same time, hydrogels, unlike other types of modern WDs (foam, films, hydrocolloids), have positive degradation properties that makes them the perfect choice in applications where a targeted delivery of bioactive substances to the wound is required. This mini review is focused on different types of traditional and modern WDs with an emphasis on hydrogels. Advantages and disadvantages of traditional and modern WDs as well as their applicability to different chronic wounds are elucidated. Furthermore, an effectiveness comparison between hydrogel WDs and the some of the frequently used biotechnologies in the field of regenerative medicine (adipose-derived mesenchymal stem cells (ADMSCs), mesenchymal stem cells, conditioned media, platelet-rich plasma (PRP)) is provided.
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Affiliation(s)
| | - Tatiana Astrelina
- Burnasyan Federal Medical Biophysical Center of the Federal Medical Biological Agency, 123098 Moscow, Russia; (V.B.); (T.M.); (A.S.)
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66
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Synthesis and characteristics of cross-linked polymer hydrogels with embedded CdS nanocrystals. JOURNAL OF POLYMER RESEARCH 2021. [DOI: 10.1007/s10965-021-02662-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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67
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Crețu A, Mattea C, Stapf S. Low-field and variable-field NMR relaxation studies of H2O and D2O molecular dynamics in articular cartilage. PLoS One 2021; 16:e0256177. [PMID: 34432832 PMCID: PMC8386884 DOI: 10.1371/journal.pone.0256177] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Accepted: 07/30/2021] [Indexed: 11/19/2022] Open
Abstract
Osteoarthritis (OA) as the main degenerative disease of articular cartilage in joints is accompanied by structural and compositional changes in the tissue. Degeneration is a consequence of a reduction of the amount of macromolecules, the so-called proteoglycans, and of a corresponding increase in water content, both leading to structural weakening of cartilage. NMR investigations of cartilage generally address only the relaxation properties of water. In this study, two-dimensional (T1-T2) measurements of bovine articular cartilage samples were carried out for different stages of hydration, complemented by molecular exchange with D2O and treatment by trypsin which simulates degeneration by OA. Two signal components were identified in all measurements, characterized by very different T2 which suggests liquid-like and solid-like dynamics. These measurements allow the quantification of separate hydrogen components and their assignment to defined physical pools which had been discussed repeatedly in the literature, i.e. bulk-like water and a combination of protein hydrogens and strongly bound water. The first determination of 2H relaxation dispersion in comparison to 1H dispersion suggests intramolecular interactions as the dominating source for the pronounced magnetic field dependence of the longitudinal relaxation time T1.
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Affiliation(s)
- Andrea Crețu
- Fachgebiet Technische Physik II/Polymerphysik, Institute of Physics, Technische Universität Ilmenau, Germany
| | - Carlos Mattea
- Fachgebiet Technische Physik II/Polymerphysik, Institute of Physics, Technische Universität Ilmenau, Germany
| | - Siegfried Stapf
- Fachgebiet Technische Physik II/Polymerphysik, Institute of Physics, Technische Universität Ilmenau, Germany
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68
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Physicochemical and pharmacological investigations of polyvinylpyrrolidone - tetrahydroxyborate hydrogel containing the local anesthetic lidocaine. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116526] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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69
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Grigatti A, Gefen A. What makes a hydrogel-based dressing advantageous for the prevention of medical device-related pressure ulcers. Int Wound J 2021; 19:515-530. [PMID: 34245120 PMCID: PMC8874119 DOI: 10.1111/iwj.13650] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 06/20/2021] [Accepted: 06/21/2021] [Indexed: 12/14/2022] Open
Abstract
The synergistic influences of geometrical, mechanical and thermal mismatches between a skin‐contacting medical device and the skin may cause tissue stress concentrations and sharp temperature gradients, both of which contribute to the risk for medical device‐related pressure ulcers. In this work, we developed an innovative, integrated experimental bioengineering approach encompassing mechanical stiffness, friction and thermal property studies for testing the biomechanical suitability of a hydrogel‐based dressing in prophylaxis of injuries caused by devices. We characterised the viscoelastic stress relaxation of the dressing and determined its long‐term elastic modulus. We further measured the coefficient of friction of the hydrogel‐based dressing at dressing‐device and skin‐dressing interfaces, using a tilting‐table tribometer. Lastly, we measured the thermal conductivity of the dressing, using a heat‐flow meter and infrared thermography‐based method. All measurements considered dry and moist conditions, the latter simulating skin perspiration effects. Our results revealed that the long‐term stiffness and the thermal conductivity of the hydrogel‐based dressing matched the corresponding properties of human skin for both dry and moist conditions. The dressing further demonstrated a relatively high coefficient of friction at its skin‐facing and device‐facing aspects, indicating minimal frictional sliding. All these properties make the above dressing advantageous for prevention of device‐related injuries.
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Affiliation(s)
- Angela Grigatti
- Department of Biomedical Engineering, Faculty of Engineering, Tel Aviv University, Tel Aviv, Israel
| | - Amit Gefen
- Department of Biomedical Engineering, Faculty of Engineering, Tel Aviv University, Tel Aviv, Israel
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70
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Chander S, Kulkarni GT, Dhiman N, Kharkwal H. Protein-Based Nanohydrogels for Bioactive Delivery. Front Chem 2021; 9:573748. [PMID: 34307293 PMCID: PMC8299995 DOI: 10.3389/fchem.2021.573748] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Accepted: 05/27/2021] [Indexed: 12/12/2022] Open
Abstract
Hydrogels possess a unique three-dimensional, cross-linked network of polymers capable of absorbing large amounts of water and biological fluids without dissolving. Nanohydrogels (NGs) or nanogels are composed of diverse types of polymers of synthetic or natural origin. Their combination is bound by a chemical covalent bond or is physically cross-linked with non-covalent bonds like electrostatic interactions, hydrophobic interactions, and hydrogen bonding. Its remarkable ability to absorb water or other fluids is mainly attributed to hydrophilic groups like hydroxyl, amide, and sulphate, etc. Natural biomolecules such as protein- or peptide-based nanohydrogels are an important category of hydrogels which possess high biocompatibility and metabolic degradability. The preparation of protein nanohydrogels and the subsequent encapsulation process generally involve use of environment friendly solvents and can be fabricated using different proteins, such as fibroins, albumin, collagen, elastin, gelatin, and lipoprotein, etc. involving emulsion, electrospray, and desolvation methods to name a few. Nanohydrogels are excellent biomaterials with broad applications in the areas of regenerative medicine, tissue engineering, and drug delivery due to certain advantages like biodegradability, biocompatibility, tunable mechanical strength, molecular binding abilities, and customizable responses to certain stimuli like ionic concentration, pH, and temperature. The present review aims to provide an insightful analysis of protein/peptide nanohydrogels including their preparation, biophysiochemical aspects, and applications in diverse disciplines like in drug delivery, immunotherapy, intracellular delivery, nutraceutical delivery, cell adhesion, and wound dressing. Naturally occurring structural proteins that are being explored in protein nanohydrogels, along with their unique properties, are also discussed briefly. Further, the review also covers the advantages, limitations, overview of clinical potential, toxicity aspects, stability issues, and future perspectives of protein nanohydrogels.
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Affiliation(s)
- Subhash Chander
- Amity Institute of Phytochemistry and Phytomedicine, Amity University, Noida, India
| | - Giriraj T. Kulkarni
- Amity Institute of Pharmacy, Amity University, Noida, India
- Gokaraju Rangaraju College of Pharmacy, Hyderabad, India
| | | | - Harsha Kharkwal
- Amity Institute of Phytochemistry and Phytomedicine, Amity University, Noida, India
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71
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Savina IN, Zoughaib M, Yergeshov AA. Design and Assessment of Biodegradable Macroporous Cryogels as Advanced Tissue Engineering and Drug Carrying Materials. Gels 2021; 7:79. [PMID: 34203439 PMCID: PMC8293244 DOI: 10.3390/gels7030079] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 06/17/2021] [Accepted: 06/22/2021] [Indexed: 12/13/2022] Open
Abstract
Cryogels obtained by the cryotropic gelation process are macroporous hydrogels with a well-developed system of interconnected pores and shape memory. There have been significant recent advancements in our understanding of the cryotropic gelation process, and in the relationship between components, their structure and the application of the cryogels obtained. As cryogels are one of the most promising hydrogel-based biomaterials, and this field has been advancing rapidly, this review focuses on the design of biodegradable cryogels as advanced biomaterials for drug delivery and tissue engineering. The selection of a biodegradable polymer is key to the development of modern biomaterials that mimic the biological environment and the properties of artificial tissue, and are at the same time capable of being safely degraded/metabolized without any side effects. The range of biodegradable polymers utilized for cryogel formation is overviewed, including biopolymers, synthetic polymers, polymer blends, and composites. The paper discusses a cryotropic gelation method as a tool for synthesis of hydrogel materials with large, interconnected pores and mechanical, physical, chemical and biological properties, adapted for targeted biomedical applications. The effect of the composition, cross-linker, freezing conditions, and the nature of the polymer on the morphology, mechanical properties and biodegradation of cryogels is discussed. The biodegradation of cryogels and its dependence on their production and composition is overviewed. Selected representative biomedical applications demonstrate how cryogel-based materials have been used in drug delivery, tissue engineering, regenerative medicine, cancer research, and sensing.
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Affiliation(s)
- Irina N. Savina
- School of Pharmacy and Biomolecular Sciences, University of Brighton, Huxley Building, Lewes Road, Brighton BN2 4GJ, UK
| | - Mohamed Zoughaib
- Institute of Fundamental Medicine and Biology, Kazan (Volga Region) Federal University, 18 Kremlyovskaya St., 420008 Kazan, Russia; (M.Z.); (A.A.Y.)
| | - Abdulla A. Yergeshov
- Institute of Fundamental Medicine and Biology, Kazan (Volga Region) Federal University, 18 Kremlyovskaya St., 420008 Kazan, Russia; (M.Z.); (A.A.Y.)
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72
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Cesco CT, Valente AJM, Paulino AT. Methylene Blue Release from Chitosan/Pectin and Chitosan/DNA Blend Hydrogels. Pharmaceutics 2021; 13:842. [PMID: 34200364 PMCID: PMC8228472 DOI: 10.3390/pharmaceutics13060842] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 05/25/2021] [Accepted: 06/02/2021] [Indexed: 12/14/2022] Open
Abstract
Chitosan/DNA blend hydrogel (CDB) and chitosan/pectin blend hydrogel (CPB) were synthesized using an emulsion (oil-in-water) technique for the release of methylene blue (model molecule). Both hydrogels were characterized by swelling assays, Fourier transform infrared (FT-IR) spectroscopy, thermogravimetric analysis (TGA) and scanning electron microscopy (SEM), before and after the methylene blue (MB) loading. Higher swelling degrees were determined for both hydrogels in simulated gastric fluid. FT-IR spectra inferred absorption peak changes and shifts after MB loading. The TGA results confirmed changes in the polymer network degradation. The SEM images indicated low porosities on the hydrogel surfaces, with deformed structure of the CPB. Smoother and more uniform surfaces were noticed on the CDB chain after MB loading. Higher MB adsorption capacities were determined at lower initial hydrogel masses and higher initial dye concentrations. The MB adsorption mechanisms on the hydrogel networks were described by the monolayer and multilayer formation. The MB release from hydrogels was studied in simulated gastric and intestinal fluids, at 25 °C and 37 °C, with each process taking place at roughly 6 h. Higher release rates were determined in simulated gastric fluid at 25 °C. The release kinetics of MB in chitosan/DNA and chitosan/pectin matrices follows a pseudo-second-order kinetic mechanism.
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Affiliation(s)
- Cassiele T. Cesco
- Department of Food and Chemical Engineering, Santa Catarina State University, Pinhalzinho 89870-000, Brazil;
| | | | - Alexandre T. Paulino
- Department of Food and Chemical Engineering, Santa Catarina State University, Pinhalzinho 89870-000, Brazil;
- Postgraduate Program in Applied Chemistry, Santa Catarina State University, Joinville 89219-710, Brazil
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73
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Adibnia V, Ma Y, Halimi I, Walker GC, Banquy X, Kumacheva E. Phytoglycogen Nanoparticles: Nature-Derived Superlubricants. ACS NANO 2021; 15:8953-8964. [PMID: 33960783 DOI: 10.1021/acsnano.1c01755] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Phytoglycogen nanoparticles (PhG NPs), a single-molecule highly branched polysaccharide, exhibit excellent water retention, due to the abundance of close-packed hydroxyl groups forming hydrogen bonds with water. Here we report lubrication properties of close-packed adsorbed monolayers of PhG NPs acting as boundary lubricants. Using direct surface force measurements, we show that the hydrated nature of the NP layer results in its striking lubrication performance, with two distinct confinement-controlled friction coefficients. In the weak- to moderate-confinement regime, when the NP layer is compressed down to 8% of its original thickness under a normal pressure of up to 2.4 MPa, the NPs lubricate the surface with a friction coefficient of 10-3. In the strong-confinement regime, with 6.5% of the original layer thickness under a normal pressure of up to 8.1 MPa, the friction coefficient was 10-2. Analysis of the water content and energy dissipation in the confined NP film reveals that the lubrication is governed by synergistic contributions of unbound and bound water molecules, with the former contributing to lubrication properties in the weak- to moderate-confinement regime and the latter being responsible for the lubrication in the strong-confinement regime. These results unravel mechanistic insights that are essential for the design of lubricating systems based on strongly hydrated NPs.
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Affiliation(s)
- Vahid Adibnia
- Department of Chemistry, University of Toronto, Toronto, Ontario, Canada, M5S 3H6
- Faculty of Pharmacy, Université de Montréal, Montreal, Quebec, Canada, H3C 3J7
| | - Yingshan Ma
- Department of Chemistry, University of Toronto, Toronto, Ontario, Canada, M5S 3H6
| | - Ilias Halimi
- Department of Chemistry, University of Toronto, Toronto, Ontario, Canada, M5S 3H6
| | - Gilbert C Walker
- Department of Chemistry, University of Toronto, Toronto, Ontario, Canada, M5S 3H6
| | - Xavier Banquy
- Faculty of Pharmacy, Université de Montréal, Montreal, Quebec, Canada, H3C 3J7
| | - Eugenia Kumacheva
- Department of Chemistry, University of Toronto, Toronto, Ontario, Canada, M5S 3H6
- Institute of Biomedical Engineering, University of Toronto, Toronto, Canada, M5S 3G9
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Canada, M5S 3E5
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74
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Prouvé E, Drouin B, Chevallier P, Rémy M, Durrieu MC, Laroche G. Evaluating Poly(Acrylamide-co-Acrylic Acid) Hydrogels Stress Relaxation to Direct the Osteogenic Differentiation of Mesenchymal Stem Cells. Macromol Biosci 2021; 21:e2100069. [PMID: 33870650 DOI: 10.1002/mabi.202100069] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 03/30/2021] [Indexed: 11/09/2022]
Abstract
The aim of this study is to investigate polyacrylamide-based hydrogels stress relaxation and the subsequent impact on the osteogenic differentiation of human mesenchymal stem cells (hMSCs). Different hydrogels are synthesized by varying the amount of cross-linker and the ratio between the monomers (acrylamide and acrylic acid), and characterized by compression tests. It has been found that hydrogels containing 18% of acrylic acid exhibit an average relaxation of 70%, while pure polyacrylamide gels show an average relaxation of 15%. Subsequently, hMSCs are cultured on two different hydrogels functionalized with a mimetic peptide of the bone morphogenetic protein-2 to enable cell adhesion and favor their osteogenic differentiation. Phalloidin staining shows that for a constant stiffness of 55 kPa, a hydrogel with a low relaxation (15%) leads to star-shaped cells, which is typical of osteocytes, while a hydrogel with a high relaxation (70%) presents cells with a polygonal shape characteristic of osteoblasts. Immunofluorescence labeling of E11, strongly expressed in early osteocytes, also shows a dramatically higher expression for cells cultured on the hydrogel with low relaxation (15%). These results clearly demonstrate that, by fine-tuning hydrogels stress relaxation, hMSCs differentiation can be directed toward osteoblasts, and even osteocytes, which is particularly rare in vitro.
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Affiliation(s)
- Emilie Prouvé
- Department of mining, metallurgy, and materials engineering, Surface Engineering Laboratory, Research Center on Advanced Materials, Laval University, 1065 Avenue de la médecine, Québec, G1V 0A6, Canada.,Research Center of the University Hospital of Québec, Regenerative Medicine axis, St-François d'Assise Hospital, Laval University, 10 rue de l'Espinay, Québec, G1L 3L5, Canada.,Institute of Chemistry and Biology of Membranes and Nano-objects (UMR 5248 CBMN), Bordeaux University, Allée Geoffroy St Hilaire - Bât B14, Pessac, 33600, France.,CNRS, CBMN UMR5248, Allée Geoffroy Saint Hilaire - Bât B14, Pessac, 33600, France.,Bordeaux INP, CBMN UMR5248, Allée Geoffroy Saint Hilaire - Bât B14, Pessac, 33600, France
| | - Bernard Drouin
- Research Center of the University Hospital of Québec, Regenerative Medicine axis, St-François d'Assise Hospital, Laval University, 10 rue de l'Espinay, Québec, G1L 3L5, Canada
| | - Pascale Chevallier
- Department of mining, metallurgy, and materials engineering, Surface Engineering Laboratory, Research Center on Advanced Materials, Laval University, 1065 Avenue de la médecine, Québec, G1V 0A6, Canada.,Research Center of the University Hospital of Québec, Regenerative Medicine axis, St-François d'Assise Hospital, Laval University, 10 rue de l'Espinay, Québec, G1L 3L5, Canada
| | - Murielle Rémy
- Institute of Chemistry and Biology of Membranes and Nano-objects (UMR 5248 CBMN), Bordeaux University, Allée Geoffroy St Hilaire - Bât B14, Pessac, 33600, France.,CNRS, CBMN UMR5248, Allée Geoffroy Saint Hilaire - Bât B14, Pessac, 33600, France.,Bordeaux INP, CBMN UMR5248, Allée Geoffroy Saint Hilaire - Bât B14, Pessac, 33600, France
| | - Marie-Christine Durrieu
- Institute of Chemistry and Biology of Membranes and Nano-objects (UMR 5248 CBMN), Bordeaux University, Allée Geoffroy St Hilaire - Bât B14, Pessac, 33600, France.,CNRS, CBMN UMR5248, Allée Geoffroy Saint Hilaire - Bât B14, Pessac, 33600, France.,Bordeaux INP, CBMN UMR5248, Allée Geoffroy Saint Hilaire - Bât B14, Pessac, 33600, France
| | - Gaétan Laroche
- Department of mining, metallurgy, and materials engineering, Surface Engineering Laboratory, Research Center on Advanced Materials, Laval University, 1065 Avenue de la médecine, Québec, G1V 0A6, Canada.,Research Center of the University Hospital of Québec, Regenerative Medicine axis, St-François d'Assise Hospital, Laval University, 10 rue de l'Espinay, Québec, G1L 3L5, Canada
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75
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Gun'ko VM. Polymer Adsorbents vs. Functionalized Oxides and Carbons: Particulate Morphology and Textural and SurfaceCharacteristics. Polymers (Basel) 2021; 13:1249. [PMID: 33921494 PMCID: PMC8069040 DOI: 10.3390/polym13081249] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 04/08/2021] [Accepted: 04/09/2021] [Indexed: 01/15/2023] Open
Abstract
Various methods for morphological, textural, and structural characterization of polymeric, carbon, and oxide adsorbents have been developed and well described. However, there are ways to improve the quantitative information extraction from experimental data for describing complex sorbents and polymer fillers. This could be based not only on probe adsorption and electron microscopies (TEM, SEM) but also on small-angle X-ray scattering (SAXS), cryoporometry, relaxometry, thermoporometry, quasi-elastic light scattering, Raman and infrared spectroscopies, and other methods. To effectively extract information on complex materials, it is important to use appropriate methods to treat the data with adequate physicomathematical models that accurately describe the dependences of these data on pressure, concentration, temperature, and other parameters, and effective computational programs. It is shown that maximum accurate characterization of complex materials is possible if several complemented methods are used in parallel, e.g., adsorption and SAXS with self-consistent regularization procedures (giving pore size (PSD), pore wall thickness (PWTD) or chord length (CLD), and particle size (PaSD) distribution functions, the specific surface area of open and closed pores, etc.), TEM/SEM images with quantitative treatments (giving the PaSD, PSD, and PWTD functions), as well as cryo- and thermoporometry, relaxometry, X-ray diffraction, infrared and Raman spectroscopies (giving information on the behavior of the materials under different conditions).
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Affiliation(s)
- Volodymyr M Gun'ko
- Chuiko Institute of Surface Chemistry, 17 General Naumov Street, 03164 Kyiv, Ukraine
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76
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Xiao S, He X, Zhao Z, Huang G, Yan Z, He Z, Zhao Z, Chen F, Yang J. Strong anti-polyelectrolyte zwitterionic hydrogels with superior self-recovery, tunable surface friction, conductivity, and antifreezing properties. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2021.110350] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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77
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Liu Y, Liu X, Duan B, Yu Z, Cheng T, Yu L, Liu L, Liu K. Polymer-Water Interaction Enabled Intelligent Moisture Regulation in Hydrogels. J Phys Chem Lett 2021; 12:2587-2592. [PMID: 33689370 DOI: 10.1021/acs.jpclett.1c00034] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The water-vapor transition is critical for hydrogels in a collection of applications. However, how the polymer-water interaction along with the nature of the structure affect the macroscopic water-vapor transition remains a challenging question to answer. In this work, we tested the moisture transfer behaviors of a series of hydrogels at different humidities and found some hydrogels capable of lowering their surface vapor pressure to stop dehydration at low humidity and absorbing water from ambient air to recover toward initial states at high humidity. Through molecular dynamic simulations, we demonstrate that water inside these hydrogels undergoes increasing intensive intermolecular bonding during evaporation. The increased intermolecular bonding reduces the vapor pressure of the hydrogels and leads to the self-regulation. More interestingly, we demonstrate the self-regulation is closely related to the Young's modulus of hydrogels. These results provide further insight into the mechanism of the water-vapor transition in hydrogels and show potential in a broad range of future applications.
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Affiliation(s)
- Yuxi Liu
- MOE Key Laboratory of Hydrodynamic Transients, School of Power and Mechanical Engineering, Wuhan University, Wuhan, Hubei 430072, P. R. China
| | - Xiaowei Liu
- MOE Key Laboratory of Hydrodynamic Transients, School of Power and Mechanical Engineering, Wuhan University, Wuhan, Hubei 430072, P. R. China
| | - Bo Duan
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, P. R. China
| | - Zehua Yu
- MOE Key Laboratory of Hydrodynamic Transients, School of Power and Mechanical Engineering, Wuhan University, Wuhan, Hubei 430072, P. R. China
| | - Ting Cheng
- MOE Key Laboratory of Hydrodynamic Transients, School of Power and Mechanical Engineering, Wuhan University, Wuhan, Hubei 430072, P. R. China
| | - Liangying Yu
- MOE Key Laboratory of Hydrodynamic Transients, School of Power and Mechanical Engineering, Wuhan University, Wuhan, Hubei 430072, P. R. China
| | - Lei Liu
- China Tobacco Hubei Industrial, LLC, Wuhan, Hubei 430040, P. R. China
| | - Kang Liu
- MOE Key Laboratory of Hydrodynamic Transients, School of Power and Mechanical Engineering, Wuhan University, Wuhan, Hubei 430072, P. R. China
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China
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78
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Sterling JD, Jiang W, Botello-Smith WM, Luo YL. Ion Pairing and Dielectric Decrement in Glycosaminoglycan Brushes. J Phys Chem B 2021; 125:2771-2780. [PMID: 33662212 DOI: 10.1021/acs.jpcb.0c11571] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Cell-surface polysaccharides are essential to many aspects of physiology, serving as a highly conserved evolutionary feature of life and as an important part of the innate immune system in mammals. Here, as simplified biophysical models of these sugar coatings, we present results of molecular dynamics simulations of hyaluronic acid and heparin brushes that show important effects of ion pairing, water dielectric decrease, and coion exclusion. As in prior studies of macromolecular crowding under physiologically relevant salt concentrations, our results show equilibria with electroneutrality attained through screening and pairing of brush anionic charges by monovalent cations at the atomistic detail. Most surprising is the reversal of the Donnan potential obtained from both nonpolarizable and Drude polarizable force fields, in contrast to what would be expected based on electrostatic Boltzmann partitioning alone. Water dielectric decrement within the brush domain is also associated with Born hydration-driven cation exclusion from the brush. We observe that the primary partition energy attracting cations to attain brush electroneutrality is the ion pairing or salt-bridge energy. Potassium and sodium pairings to glycosaminoglycan carboxylates and sulfates show similar abundance of contact-pairing and solvent-separated pairing. We conclude that in these crowded macromolecular brushes, ion-pairing, Born-hydration, and electrostatic potential energies all contribute to attain electroneutrality and should therefore contribute in mean-field models to accurately represent brush electrostatics.
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Affiliation(s)
- James D Sterling
- Henry E. Riggs School of Applied Life Sciences, Keck Graduate Institute, 535 Watson Dr., Claremont, California 91711, United States
| | - Wenjuan Jiang
- College of Pharmacy, Western University of Health Sciences, 309 E. Second Street, Pomona, California 91766, United States
| | - Wesley M Botello-Smith
- College of Pharmacy, Western University of Health Sciences, 309 E. Second Street, Pomona, California 91766, United States
| | - Yun L Luo
- College of Pharmacy, Western University of Health Sciences, 309 E. Second Street, Pomona, California 91766, United States
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79
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Generation of Photopolymerized Microparticles Based on PEGDA Using Microfluidic Devices. Part 1. Initial Gelation Time and Mechanical Properties of the Material. MICROMACHINES 2021; 12:mi12030293. [PMID: 33802204 PMCID: PMC8001310 DOI: 10.3390/mi12030293] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 03/04/2021] [Accepted: 03/05/2021] [Indexed: 01/13/2023]
Abstract
Photopolymerized microparticles are made of biocompatible hydrogels like Polyethylene Glycol Diacrylate (PEGDA) by using microfluidic devices are a good option for encapsulation, transport and retention of biological or toxic agents. Due to the different applications of these microparticles, it is important to investigate the formulation and the mechanical properties of the material of which they are made of. Therefore, in the present study, mechanical tests were carried out to determine the swelling, drying, soluble fraction, compression, cross-linking density (Mc) and mesh size (ξ) properties of different hydrogel formulations. Tests provided sufficient data to select the best formulation for the future generation of microparticles using microfluidic devices. The initial gelation times of the hydrogels formulations were estimated for their use in the photopolymerization process inside a microfluidic device. Obtained results showed a close relationship between the amount of PEGDA used in the hydrogel and its mechanical properties as well as its initial gelation time. Consequently, it is of considerable importance to know the mechanical properties of the hydrogels made in this research for their proper manipulation and application. On the other hand, the initial gelation time is crucial in photopolymerizable hydrogels and their use in continuous systems such as microfluidic devices.
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80
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Yang X, Dargaville BL, Hutmacher DW. Elucidating the Molecular Mechanisms for the Interaction of Water with Polyethylene Glycol-Based Hydrogels: Influence of Ionic Strength and Gel Network Structure. Polymers (Basel) 2021; 13:845. [PMID: 33801863 PMCID: PMC8000404 DOI: 10.3390/polym13060845] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 02/24/2021] [Accepted: 02/25/2021] [Indexed: 12/11/2022] Open
Abstract
The interaction of water within synthetic and natural hydrogel systems is of fundamental importance in biomaterial science. A systematic study is presented on the swelling behavior and states of water for a polyethylene glycol-diacrylate (PEGDA)-based model neutral hydrogel system that goes beyond previous studies reported in the literature. Hydrogels with different network structures are crosslinked and swollen in different combinations of water and phosphate-buffered saline (PBS). Network variables, polyethylene glycol (PEG) molecular weight (MW), and weight fraction are positively correlated with swelling ratio, while "non-freezable bound water" content decreases with PEG MW. The presence of ions has the greatest influence on equilibrium water and "freezable" and "non-freezable" water, with all hydrogel formulations showing a decreased swelling ratio and increased bound water as ionic strength increases. Similarly, the number of "non-freezable bound water" molecules, calculated from DSC data, is greatest-up to six molecules per PEG repeat unit-for gels swollen in PBS. Fundamentally, the balance of osmotic pressure and non-covalent bonding is a major factor within the molecular structure of the hydrogel system. The proposed model explains the dynamic interaction of water within hydrogels in an osmotic environment. This study will point toward a better understanding of the molecular nature of the water interface in hydrogels.
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Affiliation(s)
| | | | - Dietmar W. Hutmacher
- Centre for Transformative Biomimetics in Bioengineering, Queensland University of Technology, 60 Musk Avenue, Kelvin Grove, QLD 4059, Australia; (X.Y.); (B.L.D.)
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81
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Łabowska MB, Cierluk K, Jankowska AM, Kulbacka J, Detyna J, Michalak I. A Review on the Adaption of Alginate-Gelatin Hydrogels for 3D Cultures and Bioprinting. MATERIALS (BASEL, SWITZERLAND) 2021; 14:858. [PMID: 33579053 PMCID: PMC7916803 DOI: 10.3390/ma14040858] [Citation(s) in RCA: 78] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 01/12/2021] [Accepted: 02/02/2021] [Indexed: 12/13/2022]
Abstract
Sustaining the vital functions of cells outside the organism requires strictly defined parameters. In order to ensure their optimal growth and development, it is necessary to provide a range of nutrients and regulators. Hydrogels are excellent materials for 3D in vitro cell cultures. Their ability to retain large amounts of liquid, as well as their biocompatibility, soft structures, and mechanical properties similar to these of living tissues, provide appropriate microenvironments that mimic extracellular matrix functions. The wide range of natural and synthetic polymeric materials, as well as the simplicity of their physico-chemical modification, allow the mechanical properties to be adjusted for different requirements. Sodium alginate-based hydrogel is a frequently used material for cell culture. The lack of cell-interactive properties makes this polysaccharide the most often applied in combination with other materials, including gelatin. The combination of both materials increases their biological activity and improves their material properties, making this combination a frequently used material in 3D printing technology. The use of hydrogels as inks in 3D printing allows the accurate manufacturing of scaffolds with complex shapes and geometries. The aim of this paper is to provide an overview of the materials used for 3D cell cultures, which are mainly alginate-gelatin hydrogels, including their properties and potential applications.
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Affiliation(s)
- Magdalena B. Łabowska
- Department of Mechanics, Materials and Biomedical Engineering, Faculty of Mechanical Engineering, Wroclaw University of Science and Technology, Smoluchowskiego 25, 50-370 Wroclaw, Poland; (M.B.Ł); (A.M.J.)
| | - Karolina Cierluk
- Faculty of Chemistry, Wroclaw University of Science and Technology, Norwida 4/6, 50-373 Wroclaw, Poland;
| | - Agnieszka M. Jankowska
- Department of Mechanics, Materials and Biomedical Engineering, Faculty of Mechanical Engineering, Wroclaw University of Science and Technology, Smoluchowskiego 25, 50-370 Wroclaw, Poland; (M.B.Ł); (A.M.J.)
| | - Julita Kulbacka
- Department of Molecular and Cellular Biology, Faculty of Pharmacy, Wroclaw Medical University, Borowska 211A, 50-556 Wroclaw, Poland;
| | - Jerzy Detyna
- Department of Mechanics, Materials and Biomedical Engineering, Faculty of Mechanical Engineering, Wroclaw University of Science and Technology, Smoluchowskiego 25, 50-370 Wroclaw, Poland; (M.B.Ł); (A.M.J.)
| | - Izabela Michalak
- Department of Advanced Material Technologies, Faculty of Chemistry, Wroclaw University of Science and Technology, Smoluchowskiego 25, 50-370 Wroclaw, Poland;
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82
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Jian Y, Handschuh-Wang S, Zhang J, Lu W, Zhou X, Chen T. Biomimetic anti-freezing polymeric hydrogels: keeping soft-wet materials active in cold environments. MATERIALS HORIZONS 2021; 8:351-369. [PMID: 34821259 DOI: 10.1039/d0mh01029d] [Citation(s) in RCA: 118] [Impact Index Per Article: 39.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
As one of the most outstanding materials, the analysis of the structure and function of hydrogels has been extensively carried out to tailor and adapt them to various fields of application. The high water content, which is beneficial for plenty of applications in the biomedical setting, prevents the adoption of hydrogels in flexible electronics and sensors in real life applications, because hydrogels lose their excellent properties, including conductivity, transparency, flexibility, etc., upon freezing at sub-zero temperatures. Therefore, depressing the liquid-solid phase transition temperature is a powerful means to expand the application scope of hydrogels, and will benefit the chemical engineering and materials science communities. This review summarizes the recent research progress of anti-freezing hydrogels. At first, approaches for the generation of anti-freezing (hydro)gels are introduced and their anti-freezing mechanisms and performances are briefly discussed. These approaches are either based on addition of salts, alcohols (cryoprotectants and organohydrogels), and ionic liquids (ionogels), modification of the polymer network or a combination of several techniques. Then, a concise overview of applications leveraged by the widened temperature resistance is provided and future research areas and developments are envisaged.
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Affiliation(s)
- Yukun Jian
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China.
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83
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Uspenskaya EV, Pleteneva TV, Kazimova IV, Syroeshkin AV. Evaluation of Poorly Soluble Drugs' Dissolution Rate by Laser Scattering in Different Water Isotopologues. Molecules 2021; 26:601. [PMID: 33498881 PMCID: PMC7866158 DOI: 10.3390/molecules26030601] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 12/29/2020] [Accepted: 01/19/2021] [Indexed: 11/24/2022] Open
Abstract
The most important task in the design of dosage forms is to modify the pharmaceutical substances structure in order to increase solubilization, targeted delivery, controlled rate of drug administration, and its bioavailability. Screening-laboratory (in vitro) or computer (in silico)-as a procedure for selecting a prototype for the design of a drug molecule, involves several years of research and significant costs. Among a large number of solvents and diluents (alcohol, ether, oils, glycerol, Vaseline) used in the pharmaceutical industry for the manufacture of drugs water finds the greatest application. This is because all biological reactions (reactions in living systems) take place in water and distribution of the fluid in the body and the substances found within is critical for the maintenance of intracellular and extracellular functions. Modern studies in the field of the stable isotopic compositions of natural water and its structure and properties make it possible to use isotopic transformations of the water to improve the pharmacokinetic properties of medicinal substances without previous structural modification. It is known that by replacing any of the atoms in the reacting substance molecule with its isotope, it is possible to record changes in the reactivity, which are expressed as a change in the reaction rate constant, i.e., in the manifestation of the kinetic isotope effect (KIE). The article presents the results of studies on the effect of the kinetic isotope effect of a solvent-water-on increasing the solubility and dissolution rate constants of poorly soluble drugs using laser diffraction spectroscopy. The results of the studies can be successfully implemented in pharmaceutical practice to overcome the poor solubility of medicinal substances of classes II and IV, according to the biopharmaceutical classification system (BCS), in water for pharmaceutical purposes by performing its preliminary and safe isotopic modification.
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Affiliation(s)
- Elena V. Uspenskaya
- Department of Pharmaceutical and Toxicological Chemistry, Medical Institute, RUDN University, 6 Miklukho-Maklaya Street, 117198 Moscow, Russia; (T.V.P.); (I.V.K.); (A.V.S.)
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84
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De Wever P, de Oliveira-Silva R, Marreiros J, Ameloot R, Sakellariou D, Fardim P. Topochemical Engineering of Cellulose-Carboxymethyl Cellulose Beads: A Low-Field NMR Relaxometry Study. Molecules 2020; 26:E14. [PMID: 33375128 PMCID: PMC7792948 DOI: 10.3390/molecules26010014] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 12/14/2020] [Accepted: 12/14/2020] [Indexed: 12/14/2022] Open
Abstract
The demand for more ecological, highly engineered hydrogel beads is driven by a multitude of applications such as enzyme immobilization, tissue engineering and superabsorbent materials. Despite great interest in hydrogel fabrication and utilization, the interaction of hydrogels with water is not fully understood. In this work, NMR relaxometry experiments were performed to study bead-water interactions, by probing the changes in bead morphology and surface energy resulting from the incorporation of carboxymethyl cellulose (CMC) into a cellulose matrix. The results show that CMC improves the swelling capacity of the beads, from 1.99 to 17.49, for pure cellulose beads and beads prepared with 30% CMC, respectively. Changes in water mobility and interaction energy were evaluated by NMR relaxometry. Our findings indicate a 2-fold effect arising from the CMC incorporation: bead/water interactions were enhanced by the addition of CMC, with minor additions having a greater effect on the surface energy parameter. At the same time, bead swelling was recorded, leading to a reduction in surface-bound water, enhancing water mobility inside the hydrogels. These findings suggest that topochemical engineering by adjusting the carboxymethyl cellulose content allows the tuning of water mobility and porosity in hybrid beads and potentially opens up new areas of application for this biomaterial.
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Affiliation(s)
- Pieter De Wever
- Bio- & Chemical Systems Technology, Reactor Engineering and Safety Section, Department of Chemical engineering, KU Leuven, Celestijnenlaan 200f, P.O. Box 2424, 3001 Leuven, Belgium;
| | - Rodrigo de Oliveira-Silva
- Centre for Membrane Separations, Adsorption, Catalysis, and Spectroscopy for Sustainable Solutions, Department of Microbial and Molecular Systems, Celestijnenlaan 200f, P.O. Box 2454, 3001 Leuven, Belgium; (R.d.O.-S.); (J.M.); (R.A.); (D.S.)
| | - João Marreiros
- Centre for Membrane Separations, Adsorption, Catalysis, and Spectroscopy for Sustainable Solutions, Department of Microbial and Molecular Systems, Celestijnenlaan 200f, P.O. Box 2454, 3001 Leuven, Belgium; (R.d.O.-S.); (J.M.); (R.A.); (D.S.)
| | - Rob Ameloot
- Centre for Membrane Separations, Adsorption, Catalysis, and Spectroscopy for Sustainable Solutions, Department of Microbial and Molecular Systems, Celestijnenlaan 200f, P.O. Box 2454, 3001 Leuven, Belgium; (R.d.O.-S.); (J.M.); (R.A.); (D.S.)
| | - Dimitrios Sakellariou
- Centre for Membrane Separations, Adsorption, Catalysis, and Spectroscopy for Sustainable Solutions, Department of Microbial and Molecular Systems, Celestijnenlaan 200f, P.O. Box 2454, 3001 Leuven, Belgium; (R.d.O.-S.); (J.M.); (R.A.); (D.S.)
| | - Pedro Fardim
- Bio- & Chemical Systems Technology, Reactor Engineering and Safety Section, Department of Chemical engineering, KU Leuven, Celestijnenlaan 200f, P.O. Box 2424, 3001 Leuven, Belgium;
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85
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Solventless Crosslinking of Chitosan, Xanthan, and Locust Bean Gum Networks Functionalized with β-Cyclodextrin. Gels 2020; 6:gels6040051. [PMID: 33333946 PMCID: PMC7768548 DOI: 10.3390/gels6040051] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 12/03/2020] [Accepted: 12/10/2020] [Indexed: 01/14/2023] Open
Abstract
The incorporation of cyclodextrins into polymeric crosslinked gels of hydrophilic nature can be useful for promoting the sorption of hydrophobic molecules and/or modulating the release of active principles. The covalent addition of these excipients to the matrix integrates their solubilizing effect that can contribute to increase the capacity of retention of hydrophobic substances. In this study, three diverse polysaccharides, chitosan, xanthan gum, and locust bean gum, were crosslinked with or without β-cyclodextrin, using citric acid in different ratios, to create hydrogel matrices. Through a green synthetic path, the efficient production of soluble and insoluble (hydrogel) networks functionalized with β-cyclodextrin was achieved by means of a solventless procedure. The characterization of their chemical composition, swelling in water, and their sorption and release behavior were also carried out in this work.
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86
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Mikac U, Kristl J. Magnetic Resonance Methods as a Prognostic Tool for the Biorelevant Behavior of Xanthan Tablets. Molecules 2020; 25:E5871. [PMID: 33322592 PMCID: PMC7763985 DOI: 10.3390/molecules25245871] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 12/07/2020] [Accepted: 12/10/2020] [Indexed: 11/21/2022] Open
Abstract
Hydrophilic matrix tablets with controlled drug release have been used extensively as one of the most successful oral drug delivery systems for optimizing therapeutic efficacy. In this work, magnetic resonance imaging (MRI) is used to study the influence of various pHs and mechanical stresses caused by medium flow (at rest, 80, or 150 mL/min) on swelling and on pentoxifylline release from xanthan (Xan) tablets. Moreover, a bimodal MRI system with simultaneous release testing enables measurements of hydrogel thickness and drug release, both under the same experimental conditions and at the same time. The results show that in water, the hydrogel structure is weaker and less resistant to erosion than the Xan structure in the acid medium. Different hydrogel structures affect drug release with erosion controlled release in water and diffusion controlled release in the acid medium. Mechanical stress simulating gastrointestinal contraction has no effect on the hard hydrogel in the acid medium where the release is independent of the tested stress, while it affects the release from the weak hydrogel in water with faster release under high stress. Our findings suggest that simultaneous MR imaging and drug release from matrix tablets together provide a valuable prognostic tool for prolonged drug delivery design.
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Affiliation(s)
- Urša Mikac
- Jožef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia
| | - Julijana Kristl
- Faculty of Pharmacy, University of Ljubljana, Aškerčeva 7, 1000 Ljubljana, Slovenia;
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87
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Bertran O, Saldías C, Díaz DD, Alemán C. Molecular dynamics simulations on self-healing behavior of ionene polymer-based nanostructured hydrogels. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.123072] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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88
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Mastalska-Popławska J, Stempkowska A, Habina-Skrzyniarz I, Krzyżak AT, Rutkowski P, Izak P, Rudny J, Gawenda T. Water Interactions in Hybrid Polyacrylate-Silicate Hydrogel Systems. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E4092. [PMID: 32942635 PMCID: PMC7560421 DOI: 10.3390/ma13184092] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 09/09/2020] [Accepted: 09/11/2020] [Indexed: 11/16/2022]
Abstract
Hybrid polyacrylate-silicate hydrogels were obtained in the presence of N,N'-methylenebisacrylamide (NNMBA) as the cross-linking monomer and sodium thiosulphate/potassium persulphate (NTS/KPS) as the redox initiators. The results of the tests allowed us to conclude that a hybrid structure with a polyacrylate scaffolding and a silicate matrix had been obtained. The results of the rheological analysis revealed that the hydrogel sample with a 1:7 mass ratio of sodium water glass to the sodium polyacrylate is characterized by the highest complex viscosity. Thermal analysis (Thermogravimetry/Differential Scanning Calorimetry (TG/DSC)) showed that water begins to evaporate at higher temperatures, from 120 °C to even 180 °C. These results were confirmed by mid-infrared spectroscopy (MIR) and nuclear magnetic resonance spectroscopy (NMR) analysis. Differences in the intensity of the peaks derived from water in the MIR spectra indicate that most of the water is bounded. In turn, NMR results showed that the mobility of water molecules decreases as the amount of sodium water glass in the mixture increases.
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Affiliation(s)
- Joanna Mastalska-Popławska
- Faculty of Materials Science and Ceramics, AGH University of Science and Technology, Mickiewicza 30 Av., 30-059 Krakow, Poland; (P.R.); (P.I.); (J.R.)
| | - Agata Stempkowska
- Faculty of Mining and Geoengineering, AGH University of Science and Technology, Mickiewicza 30 Av., 30-059 Krakow, Poland; (A.S.); (T.G.)
| | - Iwona Habina-Skrzyniarz
- Faculty of Geology, Geophysics and Environmental Protection, AGH University of Science and Technology, Mickiewicza 30 Av., 30-059 Krakow, Poland; (I.H.-S.); (A.T.K.)
| | - Artur T. Krzyżak
- Faculty of Geology, Geophysics and Environmental Protection, AGH University of Science and Technology, Mickiewicza 30 Av., 30-059 Krakow, Poland; (I.H.-S.); (A.T.K.)
| | - Paweł Rutkowski
- Faculty of Materials Science and Ceramics, AGH University of Science and Technology, Mickiewicza 30 Av., 30-059 Krakow, Poland; (P.R.); (P.I.); (J.R.)
| | - Piotr Izak
- Faculty of Materials Science and Ceramics, AGH University of Science and Technology, Mickiewicza 30 Av., 30-059 Krakow, Poland; (P.R.); (P.I.); (J.R.)
| | - Jakub Rudny
- Faculty of Materials Science and Ceramics, AGH University of Science and Technology, Mickiewicza 30 Av., 30-059 Krakow, Poland; (P.R.); (P.I.); (J.R.)
| | - Tomasz Gawenda
- Faculty of Mining and Geoengineering, AGH University of Science and Technology, Mickiewicza 30 Av., 30-059 Krakow, Poland; (A.S.); (T.G.)
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89
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El Hariri El Nokab M, van der Wel PC. Use of solid-state NMR spectroscopy for investigating polysaccharide-based hydrogels: A review. Carbohydr Polym 2020; 240:116276. [DOI: 10.1016/j.carbpol.2020.116276] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 03/22/2020] [Accepted: 04/08/2020] [Indexed: 12/21/2022]
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90
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Erfani A, Flynn NH, Aichele CP, Ramsey JD. Encapsulation and delivery of protein from within poly(sulfobetaine) hydrogel beads. J Appl Polym Sci 2020. [DOI: 10.1002/app.49550] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Amir Erfani
- School of Chemical EngineeringOklahoma State University Stillwater Oklahoma USA
| | - Nicholas H. Flynn
- School of Chemical EngineeringOklahoma State University Stillwater Oklahoma USA
| | - Clint P. Aichele
- School of Chemical EngineeringOklahoma State University Stillwater Oklahoma USA
| | - Joshua D. Ramsey
- School of Chemical EngineeringOklahoma State University Stillwater Oklahoma USA
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91
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S P, Jaiswal AK. Effect of interpolymer complex formation between chondroitin sulfate and chitosan-gelatin hydrogel on physico-chemical and rheological properties. Carbohydr Polym 2020; 238:116179. [DOI: 10.1016/j.carbpol.2020.116179] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 03/09/2020] [Accepted: 03/13/2020] [Indexed: 01/03/2023]
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92
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Croitoru C, Pop MA, Bedo T, Cosnita M, Roata IC, Hulka I. Physically Crosslinked Poly (Vinyl Alcohol)/Kappa-Carrageenan Hydrogels: Structure and Applications. Polymers (Basel) 2020; 12:E560. [PMID: 32138357 PMCID: PMC7182908 DOI: 10.3390/polym12030560] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 02/26/2020] [Accepted: 02/28/2020] [Indexed: 12/31/2022] Open
Abstract
This paper discusses the structure morphology and the thermal and swelling behavior of physically crosslinked hydrogels, obtained from applying four successive freezing-thawing cycles to poly (vinyl alcohol) blended with various amounts of κ-carrageenan. The addition of carrageenan in a weight ratio of 0.5 determines a twofold increase in the swelling degree and the early diffusion coefficients of the hydrogels when immersed in distilled water, due to a decrease in the crystallinity of the polymer matrix. The diffusion of water into the polymer matrix could be considered as a relaxation-controlled transport (anomalous diffusion). The presence of the sulfate groups determines an increased affinity of the hydrogels towards crystal violet cationic dye. A maximum physisorption capacity of up to 121.4 mg/g for this dye was attained at equilibrium.
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Affiliation(s)
- Catalin Croitoru
- Materials Engineering and Welding Department, Transilvania University of Brasov, Eroilor 29 Str, 500036 Brasov, Romania;
| | - Mihai Alin Pop
- Materials Science Department, Transilvania University of Brasov, Eroilor 29 Str, 500036 Brasov, Romania;
| | - Tibor Bedo
- Materials Science Department, Transilvania University of Brasov, Eroilor 29 Str, 500036 Brasov, Romania;
| | - Mihaela Cosnita
- Product Design Mechatronics and Environment Department, Transilvania University of Brasov, Eroilor 29 Str, 500036 Brasov, Romania;
| | - Ionut Claudiu Roata
- Materials Engineering and Welding Department, Transilvania University of Brasov, Eroilor 29 Str, 500036 Brasov, Romania;
| | - Iosif Hulka
- Research Institute of renewable energy–ICER, Politehnica University of Timisoara, Piata Victoriei Str., 300006 Timisoara, Romania;
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93
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Bhat A, Amanor-Boadu JM, Guiseppi-Elie A. Toward Impedimetric Measurement of Acidosis with a pH-Responsive Hydrogel Sensor. ACS Sens 2020; 5:500-509. [PMID: 31948224 DOI: 10.1021/acssensors.9b02336] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A pH-responsive, poly(2-hydroxyethyl methacrylate) [poly(HEMA)]-based hydrogel has been fashioned into an impedimetric pH sensor for the continual measurement and monitoring of tissue acidosis that can arise due to hemorrhaging trauma. Four hydrogel systems molecularly engineered to influence water distribution and ionic abundance were studied: a cationogenic primary amine, N-(2-aminoethyl) methacrylate (AEMA), a tertiary amine moiety, N,N-(2-dimethylamino)ethyl methacrylate (DMAEMA), and a combined AEMA-DMAEMA formulation. Electrochemical impedance spectroscopy (EIS) of hydrogel discs held between platinized Type 304 stainless steel mesh electrodes in pH-adjusted 4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid sodium salt (HEPES) buffer and equivalent circuit modeling indicated that the AEMA hydrogel had the highest sensitivity containing the relevant pathophysiological range (pH 7.0-8.0). Thus, the AEMA formulation was studied at 0, 1, 3, 4.4, and 30 mol % AEMA. The 1 mol % AEMA was found to significantly (p < 0.05) discern nominal pH (7.35, 7.40, 7.45). The Taguchi Design of Experiments approach was employed and confirmed composition as a factor and 1 mol % AEMA to be the most robust. DMAEMA (0, 4.4, 14, 30 mol %) and AEMA-DMAEMA (0, 4.4, 14, 30 mol %) allowed the use of the one-factor Response Surface Methodology optimizer to confirm the AEMA 1 mol % system to be most robust, sensitive, and possessing optimal sensitivity in the pathophysiological pH sensing range (7.35-7.45) for hemorrhagic trauma. This composition was fashioned as a responsive membrane on a microlithographically fabricated interdigitated microsensor electrode and the sensitivity was determined using R(QR)(QR) analysis. Water distribution within the AEMA (0, 1, 4.4, 30 mol %), determined by gravimetric analysis and differential scanning calorimetry, revealed a strong anticorrelation between nonfreezable bound water and pH sensitivity (-0.82) and was in good agreement with the total hydration (-0.70). Nonfreezable bound water was found to be the most strongly correlated factor that governs the pH response of hydrogels.
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Affiliation(s)
- Ankita Bhat
- Center for Bioelectronics, Biosensors and Biochips (C3B), Department of Biomedical Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Judy M. Amanor-Boadu
- Department of Electrical and Computer Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Anthony Guiseppi-Elie
- Center for Bioelectronics, Biosensors and Biochips (C3B), Department of Biomedical Engineering, Texas A&M University, College Station, Texas 77843, United States
- Department of Electrical and Computer Engineering, Texas A&M University, College Station, Texas 77843, United States
- Department of Cardiovascular Sciences, Houston Methodist Institute for Academic Medicine and Houston Methodist Research Institute, 6670 Bertner Avenue, Houston, Texas 77030, United States
- ABTECH Scientific, Inc., Biotechnology Research Park, 800 East Leigh Street, Richmond, Virginia 23219, United States
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94
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Abasi S, Davis R, Podstawczyk DA, Guiseppi-Elie A. Distribution of water states within Poly(HEMA-co-HPMA)-based hydrogels. POLYMER 2019. [DOI: 10.1016/j.polymer.2019.121978] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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95
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Kripotou S, Stefanopoulou E, Culebras-Martínez M, Morales-Román RM, Gallego Ferrer G, Kyritsis A. Water dynamics and thermal properties of tyramine-modified hyaluronic acid - Gelatin hydrogels. POLYMER 2019. [DOI: 10.1016/j.polymer.2019.121598] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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96
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Khurana B, Gierlich P, Meindl A, Gomes-da-Silva LC, Senge MO. Hydrogels: soft matters in photomedicine. Photochem Photobiol Sci 2019; 18:2613-2656. [PMID: 31460568 DOI: 10.1039/c9pp00221a] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Photodynamic therapy (PDT), a shining beacon in the realm of photomedicine, is a non-invasive technique that utilizes dye-based photosensitizers (PSs) in conjunction with light and oxygen to produce reactive oxygen species to combat malignant tissues and infectious microorganisms. Yet, for PDT to become a common, routine therapy, it is still necessary to overcome limitations such as photosensitizer solubility, long-term side effects (e.g., photosensitivity) and to develop safe, biocompatible and target-specific formulations. Polymer based drug delivery platforms are an effective strategy for the delivery of PSs for PDT applications. Among them, hydrogels and 3D polymer scaffolds with the ability to swell in aqueous media have been deeply investigated. Particularly, hydrogel-based formulations present real potential to fulfill all requirements of an ideal PDT platform by overcoming the solubility issues, while improving the selectivity and targeting drawbacks of the PSs alone. In this perspective, we summarize the use of hydrogels as carrier systems of PSs to enhance the effectiveness of PDT against infections and cancer. Their potential in environmental and biomedical applications, such as tissue engineering photoremediation and photochemistry, is also discussed.
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Affiliation(s)
- Bhavya Khurana
- Medicinal Chemistry, Trinity Translational Medicine Institute, Trinity Centre for Health Sciences, Trinity College Dublin, The University of Dublin, St James's Hospital, Dublin 8, Ireland.
| | - Piotr Gierlich
- Medicinal Chemistry, Trinity Translational Medicine Institute, Trinity Centre for Health Sciences, Trinity College Dublin, The University of Dublin, St James's Hospital, Dublin 8, Ireland. and CQC, Coimbra Chemistry Department, University of Coimbra, Coimbra, Portugal
| | - Alina Meindl
- Physik Department E20, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany
| | | | - Mathias O Senge
- Medicinal Chemistry, Trinity Translational Medicine Institute, Trinity Centre for Health Sciences, Trinity College Dublin, The University of Dublin, St James's Hospital, Dublin 8, Ireland. and Physik Department E20, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany and Institute for Advanced Study (TUM-IAS), Technische Universität München, Lichtenberg-Str. 2a, 85748 Garching, Germany
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97
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Abasi S, Podstawczyk DA, Sherback AF, Guiseppi-Elie A. Biotechnical Properties of Poly(HEMA-co-HPMA) Hydrogels Are Governed by Distribution among Water States. ACS Biomater Sci Eng 2019; 5:4994-5004. [DOI: 10.1021/acsbiomaterials.9b00705] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sara Abasi
- Center for Bioelectronics, Biosensors and Biochips (C3B), Department of Biomedical Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Daria Anna Podstawczyk
- Center for Bioelectronics, Biosensors and Biochips (C3B), Department of Biomedical Engineering, Texas A&M University, College Station, Texas 77843, United States
- Faculty of Chemistry, Department of Chemical Engineering, Wroclaw University of Science and Technology, Wroclaw 50-370, Poland
| | - Alycia Farida Sherback
- Center for Bioelectronics, Biosensors and Biochips (C3B), Department of Biomedical Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Anthony Guiseppi-Elie
- Center for Bioelectronics, Biosensors and Biochips (C3B), Department of Biomedical Engineering, Texas A&M University, College Station, Texas 77843, United States
- Faculty of Chemistry, Department of Chemical Engineering, Wroclaw University of Science and Technology, Wroclaw 50-370, Poland
- ABTECH Scientific, Inc., Biotechnology Research Park, 800 East Leigh Street, Richmond, Virginia 23219, United States
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98
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Zhou D, Chen F, Handschuh‐Wang S, Gan T, Zhou X, Zhou X. Biomimetic Extreme‐Temperature‐ and Environment‐Adaptable Hydrogels. Chemphyschem 2019; 20:2139-2154. [DOI: 10.1002/cphc.201900545] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 07/10/2019] [Indexed: 12/31/2022]
Affiliation(s)
- Dan Zhou
- College of Chemistry and Environmental EngineeringShenzhen University, Shenzhen 518060 P. R. China
| | - Fan Chen
- College of Chemistry and Environmental EngineeringShenzhen University, Shenzhen 518060 P. R. China
| | - Stephan Handschuh‐Wang
- College of Chemistry and Environmental EngineeringShenzhen University, Shenzhen 518060 P. R. China
| | - Tiansheng Gan
- College of Chemistry and Environmental EngineeringShenzhen University, Shenzhen 518060 P. R. China
| | - Xiaohu Zhou
- College of Chemistry and Environmental EngineeringShenzhen University, Shenzhen 518060 P. R. China
| | - Xuechang Zhou
- College of Chemistry and Environmental EngineeringShenzhen University, Shenzhen 518060 P. R. China
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99
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He B, Ding Y, Wang J, Yao Z, Qing W, Zhang Y, Liu F, Tang CY. Sustaining fouling resistant membranes: Membrane fabrication, characterization and mechanism understanding of demulsification and fouling-resistance. J Memb Sci 2019. [DOI: 10.1016/j.memsci.2019.03.045] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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100
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Gallo S, Gambarini G, Veronese I, Argentiere S, Gargano M, Ianni L, Lenardi C, Ludwig N, Pignoli E, d’Errico F. Does the gelation temperature or the sulfuric acid concentration influence the dosimetric properties of radiochromic PVA-GTA Xylenol Orange Fricke gels? Radiat Phys Chem Oxf Engl 1993 2019. [DOI: 10.1016/j.radphyschem.2019.03.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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