Title |
Safety and efficacy of composite collagen–silver nanoparticle hydrogels as tissue engineering scaffolds
|
---|---|
Published in |
Nanoscale, January 2015
|
DOI | 10.1039/c5nr03826j |
Pubmed ID | |
Authors |
Emilio I. Alarcon, Klas I. Udekwu, Christopher W. Noel, Luke B.-P. Gagnon, Patrick K. Taylor, Branka Vulesevic, Madeline J. Simpson, Spyridon Gkotzis, M. Mirazul Islam, Chyan-Jang Lee, Agneta Richter-Dahlfors, Thien-Fah Mah, Erik J. Suuronen, Juan C. Scaiano, May Griffith |
Abstract |
The increasing number of multidrug resistant bacteria has revitalized interest in seeking alternative sources for controlling bacterial infection. Silver nanoparticles (AgNPs), are amongst the most promising candidates due to their wide microbial spectrum of action. In this work, we report on the safety and efficacy of the incorporation of collagen coated AgNPs into collagen hydrogels for tissue engineering. The resulting hybrid materials at [AgNPs] < 0.4 μM retained the mechanical properties and biocompatibility for primary human skin fibroblasts and keratinocytes of collagen hydrogels; they also displayed remarkable anti-infective properties against S. aureus, S. epidermidis, E. coli and P. aeruginosa at considerably lower concentrations than silver nitrate. Further, subcutaneous implants of materials containing 0.2 μM AgNPs in mice showed a reduction in the levels of IL-6 and other inflammation markers (CCL24, sTNFR-2, and TIMP1). Finally, an analysis of silver contents in implanted mice showed that silver accumulation primarily occurred within the tissue surrounding the implant. |
X Demographics
Geographical breakdown
Country | Count | As % |
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Ireland | 1 | 50% |
Unknown | 1 | 50% |
Demographic breakdown
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Science communicators (journalists, bloggers, editors) | 1 | 50% |
Members of the public | 1 | 50% |
Mendeley readers
Geographical breakdown
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United Kingdom | 1 | 1% |
Unknown | 93 | 99% |
Demographic breakdown
Readers by professional status | Count | As % |
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Student > Ph. D. Student | 20 | 21% |
Student > Master | 10 | 11% |
Researcher | 8 | 9% |
Other | 7 | 7% |
Student > Doctoral Student | 5 | 5% |
Other | 18 | 19% |
Unknown | 26 | 28% |
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Biochemistry, Genetics and Molecular Biology | 9 | 10% |
Agricultural and Biological Sciences | 9 | 10% |
Medicine and Dentistry | 7 | 7% |
Chemical Engineering | 6 | 6% |
Other | 19 | 20% |
Unknown | 34 | 36% |