Coated implants improved bone attachment in osteoporotic rats

In an animal experiment, researchers tested a coated titanium implant surface in rats with age-related osteoporosis, a disease that weakens bones. The coating combined two substances intended to limit oxidative stress and the activity of cells that break down bone. Oxidative stress is an imbalance involving reactive molecules that can damage cells. The surface promoted bone formation around implants, improved spongy bone structure and improved how bone joined the implants.

Separate experiments in cells grown in the lab found that the surface promoted bone marrow stem cells’ development towards bone-forming cells under conditions associated with senescence, a state in which cells stop dividing. The surface also reduced oxidative stress inside cells and inhibited the experimentally stimulated formation of cells that break down bone.