Hope for Elderly Fall Patients... Development of Osteoporosis Fracture Treatment with 7x Effectiveness

Professor Han Dong-geun's Team at CHA University

When elderly individuals suffering from osteoporosis experience fractures such as hip fractures due to falls, they often struggle to recover and may face fatal outcomes. A domestic research team has developed a bone regeneration treatment that is more than seven times more effective than existing options, offering promising assistance.

The National Research Foundation of Korea announced on the 23rd that Professor Han Dong-geun’s research team at CHA University developed a biomimetic scaffold with zinc oxide nanoparticles that has a high effect on inducing regeneration of porous bone tissue.

For damaged bone tissue to regenerate, a scaffold that maintains its structure for a certain period while supporting cell growth and differentiation is necessary. However, existing biodegradable polymer scaffolds induce inflammatory responses after implantation, making the development of technology to suppress this essential. Strategies to enhance the scaffold’s bioactivity for optimal tissue regeneration and improve cell compatibility and function are urgently needed.

The research team devised a strategy to improve the tissue regeneration ability of damaged bone by additionally introducing zinc oxide nanoparticles, which aid vascular and bone differentiation, into the previously developed biomimetic scaffold. The scaffold used zinc oxide nanoparticles to induce the release of nitric oxide, which plays a crucial role in angiogenesis. They maximized osteoporotic bone regeneration ability by binding alendronate, a primary osteoporosis treatment drug, and bone morphogenetic protein BMP2 to the surface of the nanoparticles.

They created a scaffold similar to the actual bone tissue environment by mixing extracellular matrix inorganic components extracted from calf bone and organic components extracted through a demineralization process in a certain ratio. Magnesium hydroxide was added to minimize side effects caused by polymer degradation products.

The research team created a 4mm defect in the skulls of osteoporosis-induced mice and implanted the developed biomimetic scaffold. After eight weeks of experimentation, the volume of newly formed bone tissue increased more than sevenfold compared to the existing scaffold. The expression of osteoporotic factors and angiogenesis also recovered to levels similar to those of normal mice.

Professor Han stated, "This proves that bone regeneration can be promoted by overcoming the harsh osteoporotic environment," adding, "It is expected to be applicable for treating bone defects in osteoporosis patients, a representative disease in the super-aged society."

The research results were published on December 29 last year in the international academic journal Advanced Science.

This content was produced with the assistance of AI translation services.