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doi: 10.1002/adhm.202100873 , 10.1002/adhm.202001434 , 10.5281/zenodo.6402347 , 10.5281/zenodo.6402346
pmid: 33586352
pmc: PMC11468639
handle: 11382/546331
doi: 10.1002/adhm.202100873 , 10.1002/adhm.202001434 , 10.5281/zenodo.6402347 , 10.5281/zenodo.6402346
pmid: 33586352
pmc: PMC11468639
handle: 11382/546331
AbstractArticular cartilage (AC) is a specialized connective tissue able to provide a low‐friction gliding surface supporting shock‐absorption, reducing stresses, and guaranteeing wear‐resistance thanks to its structure and mechanical and lubrication properties. Being an avascular tissue, AC has a limited ability to heal defects. Nowadays, conventional strategies show several limitations, which results in ineffective restoration of chondral defects. Several tissue engineering approaches have been proposed to restore the AC's native properties without reproducing its mechanical and lubrication properties yet. This work reports the fabrication of a bilayered structure made of gellan gum (GG) and poly (ethylene glycol) diacrylate (PEGDA), able to mimic the mechanical and lubrication features of both AC superficial and deep zones. Through appropriate combinations of GG and PEGDA, cartilage Young's modulus is effectively mimicked for both zones. Graphene oxide is used as a dopant agent for the superficial hydrogel layer, demonstrating a lower friction than the nondoped counterpart. The bilayered hydrogel's antiwear properties are confirmed by using a knee simulator, following ISO 14243. Finally, in vitro tests with human chondrocytes confirm the absence of cytotoxicity effects. The results shown in this paper open the way to a multilayered synthetic injectable or surgically implantable filler for restoring AC defects.
Cartilage, Articular, Full Paper, Tissue Engineering, Lubrication, Polysaccharides, Bacterial, Humans, Graphite, Hydrogels
Cartilage, Articular, Full Paper, Tissue Engineering, Lubrication, Polysaccharides, Bacterial, Humans, Graphite, Hydrogels
| selected citations These citations are derived from selected sources. This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | 79 | |
| popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network. | Top 1% | |
| influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | Top 10% | |
| impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network. | Top 1% |
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| downloads | 15 |

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