11R-VIVIT Peptide Inhibits Calvaria Osteolysis Induced by Experimental Design.

Wear particles released from prosthetic implants can cause periprosthetic osteolysis, a major cause of implant loosening. The aim of this study was to investigate the effects of the 11R-VIVIT peptide on osteolysis induced by titanium (Ti) particles in vivo. Twenty-four C57BL/J6 mice were divided into 3 groups: sham operation, Ti group, and Ti/VIVIT group. A calvarial osteolysis model was established by implanting Ti particles into mouse calvaria of the Ti and Ti/VIVIT groups. After 2 weeks, 11R-VIVIT peptide (10 mg/kg/day) was intraperitoneally injected into the mice of the Ti/VIVIT group for 14 days. The other 2 groups received saline injection. The calvarial specimens were removed and stained with van Geison staining. The calvarial sagittal suture area was measured to observe bone resorption. The calvarial new bone area was measured to observe bone formation. Compared with the sham group, the area of calvarial new bone and calvarial sagittal suture were higher in the Ti group (P

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