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This study examined retrieved UHMWPE tibial bearings made from a remelted highly crosslinked (HXL) UHMWPE to determine whether the material is chemically stable in vivo. Retrieved tibial components were measured for changes in ketone oxidation and crosslink density. Oxidation increased with in vivo duration, and a significant decrease in crosslink density with increased mean ketone oxidation index...
Cathepsin K inhibitors (CKIs) are an emerging class of drugs that are potent antagonists of osteoclastic activity. We speculated that they may be beneficial in bone tissue engineering, where a stress shielded environment can lead to rapid resorption of new bone. Most CKIs require frequent dosing, so to achieve a sustained release we manufactured polymer nanoparticles encapsulating the CKI L006235...
Treatments for dentine hypersensitivity (DH) may produce positive effects, though do not have lasting results. We investigated the reparative potential of stem cells derived from deciduous teeth (SHEDs) in response to components delivered from substances used in the treatment of the DH, associated or not to laser phototherapy (LPT), to stimulate dentine formation. SHEDs were submitted to substances...
In vitro studies have shown that human osteoclasts can corrode stainless steel and titanium leading to the production of metal ions responsible for inflammatory reactions. Moreover, traces of cellular activities on metal orthopaedic explants have recently been reported as inflammatory cell‐induced (ICI) corrosion being the result of the cells sealing on the metal surfaces and releasing reactive oxygen...
Recently, keratin attracts tremendous interest because of its intrinsic ability to interact with different cells. It has the potential to serve as a controllable extracellular matrix protein that can be used to demonstrate cell mechanism and cell–matrix interaction. However, there have been relatively few studies on the effects of keratin on stem cells. In the present work, we study the effects of...
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