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Mišković V, Greco I, Minetti C, Cialdai F, Monici M, Gazzi A, Marcellino J, Samad YA, Delogu LG, Ferrari AC, Iorio CS. Hydrogel mechanical properties in altered gravity. NPJ Microgravity 2024; 10:83. [PMID: 39117674 PMCID: PMC11310329 DOI: 10.1038/s41526-024-00388-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Accepted: 03/21/2024] [Indexed: 08/10/2024] Open
Abstract
Exposure to altered gravity influences cellular behaviour in cell cultures. Hydrogels are amongst the most common materials used to produce tissue-engineering scaffolds, and their mechanical properties play a crucial role in cell-matrix interaction. However, little is known about the influence of altered gravity on hydrogel properties. Here we study the mechanical properties of Poly (ethylene glycol) diacrylate (PEGDA) and PEGDA incorporated with graphene oxide (GO) by performing tensile tests in micro and hypergravity during a Parabolic flight campaign, and by comparing them to the same tests performed in Earth gravity. We show that gravity levels do not result in a statistically significant difference in Young's modulus.
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Affiliation(s)
- Vanja Mišković
- Centre for Research and Engineering in Space Technologies, École Polytechnique de Bruxelles, Université libre de Bruxelles, Brussels, Belgium
| | - Immacolata Greco
- Centre for Research and Engineering in Space Technologies, École Polytechnique de Bruxelles, Université libre de Bruxelles, Brussels, Belgium
| | - Christophe Minetti
- Centre for Research and Engineering in Space Technologies, École Polytechnique de Bruxelles, Université libre de Bruxelles, Brussels, Belgium
| | - Francesca Cialdai
- ASAcampus Joint Laboratory, ASA Research Division, Department of Experimental and Clinical Biomedical Sciences « Mario Serio », University of Florence, Florence, Italy
| | - Monica Monici
- ASAcampus Joint Laboratory, ASA Research Division, Department of Experimental and Clinical Biomedical Sciences « Mario Serio », University of Florence, Florence, Italy
| | - Arianna Gazzi
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, Trieste, Italy
- Department of Biomedical Sciences, University of Padua, Padua, Italy
| | | | - Yarjan Abdul Samad
- Cambridge Graphene Centre, University of Cambridge, Cambridge, CB3 0FA, UK
| | - Lucia Gemma Delogu
- Department of Biomedical Sciences, University of Padua, Padua, Italy
- Department of Biological Science, Khalifa university of Science and Technology, Abu Dhabi, UAE
| | - Andrea C Ferrari
- Cambridge Graphene Centre, University of Cambridge, Cambridge, CB3 0FA, UK
| | - Carlo Saverio Iorio
- Centre for Research and Engineering in Space Technologies, École Polytechnique de Bruxelles, Université libre de Bruxelles, Brussels, Belgium.
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Fu M, Gan Y, Jiang F, Lv X, Tan N, Zhao X, Yang YY, Yuan P, Ding X. Interpenetrating Polymer Network Hydrogels Formed Using Antibiotics as a Dynamic Crosslinker for Treatment of Infected Wounds. Adv Healthc Mater 2022; 11:e2200902. [PMID: 35608275 DOI: 10.1002/adhm.202200902] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 05/17/2022] [Indexed: 12/14/2022]
Abstract
Antibacterial hydrogels, particularly antibiotic-loaded hydrogels, are promising wound dressing materials for treatment of bacteria-infected wound. However, it is challenging to achieve sustained release of antibiotics from hydrogels through physical encapsulation of the antibiotics. Herein, an interpenetrating polymer network P(AA-co-HEMA)Gen hydrogel is reported with double crosslinking formed by free radical polymerization of 2-hydroxyethyl methacrylate (HEMA) and acrylic acid (AA), while using the antibiotic gentamicin (Gen) as the dynamic physical crosslinker. Gentamicin is incorporated into the hydrogel networks via electrostatic interaction between the carboxyl groups of poly(acrylic acid) and the amino groups of gentamicin, which leads to pH-responsive drug release and a significant increase in mechanical strength (i.e., elastic modulus, viscous modulus, and compressive modulus). More importantly, the hydrogels with optimal compositions demonstrate long-lasting antibacterial activity against both Gram-positive bacteria (Staphylococcus aureus) and Gram-negative bacteria (Escherichia coli) over 28 d. The in vivo studies that are conducted in an S. aureus-infected full-thickness skin wound model demonstrate that the double crosslinking hydrogels loaded with gentamicin eliminate bacteria in the wounds more effectively and significantly accelerate wound healing as compared to 3M dressing and the control without any treatment. Taken together, this antibiotic-loaded interpenetrating polymer network hydrogel is potentially a promising wound dressing material for the treatment of bacteria-infected wound.
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Affiliation(s)
- Mengjing Fu
- School of Pharmaceutical Sciences (Shenzhen) Sun Yat‐sen University Shenzhen 518107 P. R. China
| | - Yingying Gan
- School of Pharmaceutical Sciences (Shenzhen) Sun Yat‐sen University Shenzhen 518107 P. R. China
| | - Fenglin Jiang
- School of Pharmaceutical Sciences (Shenzhen) Sun Yat‐sen University Shenzhen 518107 P. R. China
| | - Xue Lv
- School of Pharmaceutical Sciences (Shenzhen) Sun Yat‐sen University Shenzhen 518107 P. R. China
| | - Nathanael Tan
- School of Materials Science and Engineering Nanyang Technological University 50 Nanyang Avenue Singapore 639798 Singapore
| | - Xiaomiao Zhao
- Department of Reproductive Medicine Department of Obstetrics and Gynecology Guangdong Provincial People's Hospital Guangdong Academy of Medical Sciences Guangzhou 510080 P. R. China
| | - Yi Yan Yang
- Institute of Bioengineering and Bioimaging 31 Biopolis Way Singapore 138669 Singapore
| | - Peiyan Yuan
- School of Pharmaceutical Sciences (Shenzhen) Sun Yat‐sen University Shenzhen 518107 P. R. China
| | - Xin Ding
- School of Pharmaceutical Sciences (Shenzhen) Sun Yat‐sen University Shenzhen 518107 P. R. China
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Pant A, Lee AY, Karyappa R, Lee CP, An J, Hashimoto M, Tan UX, Wong G, Chua CK, Zhang Y. 3D food printing of fresh vegetables using food hydrocolloids for dysphagic patients. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2020.106546] [Citation(s) in RCA: 71] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Swelling-strengthening hydrogels by embedding with deformable nanobarriers. Nat Commun 2020; 11:4502. [PMID: 32908136 PMCID: PMC7481780 DOI: 10.1038/s41467-020-18308-9] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Accepted: 08/18/2020] [Indexed: 11/09/2022] Open
Abstract
Biological tissues, such as muscle, can increase their mechanical strength after swelling due to the existence of many biological membrane barriers that can regulate the transmembrane transport of water molecules and ions. Oppositely, typical synthetic materials show a swelling-weakening behavior, which always suffers from a sharp decline in mechanical strength after swelling, because of the dilution of the network. Here, we describe a swelling-strengthening phenomenon of polymer materials achieved by a bioinspired strategy. Liposomal membrane nanobarriers are covalently embedded in a crosslinked network to regulate transmembrane transport. After swelling, the stretched network deforms the liposomes and subsequently initiates the transmembrane diffusion of the encapsulated molecules that can trigger the formation of a new network from the preloaded precursor. Thanks to the tough nature of the double-network structure, the swelling-strengthening phenomenon is achieved to polymer hydrogels successfully. Swelling-triggered self-strengthening enables the development of various dynamic materials.
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Hydrogel formulations for biologicals: current spotlight from a commercial perspective. Ther Deliv 2018; 9:221-230. [DOI: 10.4155/tde-2017-0085] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Hydrogels are, from a commercial perspective especially because of their ease of production, attractive sustained-release systems for high potent immunoglobulins with short circulation half-lives. Hydrogel formulations can reduce the dosing frequency while maintaining therapeutically relevant drug concentrations locally as well as systemically. However, hydrogels have only limited loading capacities and release hydrophilic immunoglobulins typically within hours or days, whereas weeks or months would be more preferable. Despite an evident medical need, the call for novel depot formulations seems to go unheard. This special report explores sought-after hydrogel properties, discusses arguments for using established versus novel excipients and provides selected examples for hydrogel formulations of biologicals that have proceeded into clinical development.
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Bassyouni F, ElHalwany N, Abdel Rehim M, Neyfeh M. Advances and new technologies applied in controlled drug delivery system. RESEARCH ON CHEMICAL INTERMEDIATES 2013. [DOI: 10.1007/s11164-013-1338-2] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Jaiswal M, Naz F, Dinda AK, Koul V. In vitro and in vivo
efficacy of doxorubicin loaded biodegradable semi-interpenetrating hydrogel implants of poly (acrylic acid)/gelatin for post surgical tumor treatment. Biomed Mater 2013; 8:045004. [DOI: 10.1088/1748-6041/8/4/045004] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Abstract
Hydrogels are novel delivery systems that have drawn much attention in the current pharmaceutical scenario. Of all the advantages, the most important is their versatility, which makes them optimal for any kind of molecule, adequate to be administered by any administration route and capable to modulate the desired release profile. Current research is managed to solve the limitations of this systems; mainly the low mechanical strength and lack of control of release in time and quantity, and the reversibility of the delivery. Several approaches such as the use of multi-stimuli-sensitive mechanisms, the enhancement of mechanical properties using chemical crosslinkers, development of polyelectrolyte complexes, the increment of interpenetrating networks or composite hydrogels are providing excellent results. These systems represent a promising alternative due to the countless possibilities to offer for modulating drug release.
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