Hyperhomocysteinemia inhibits tibial fracture healing in rats through PI3K/AKT signaling pathway.

To explore the influence of hyperhomocysteinemia (hHcys) on the tibial fracture healing in rats and its effect on the phosphatidylinositol 3-hydroxy kinase (PI3K)/protein kinase B (AKT) signaling pathway. A total of 36 Sprague-Dawley rats were randomly divided into sham group (n=12), tibial fracture group (n=12) and hHcys + fracture group (n=12). The rats in tibial fracture group underwent the tibial fracture surgery, while the model of tibial fracture and hHcys was established in hHcys + fracture group.

Epimedium protects steroid-induced avascular necrosis of femoral head in rats by inhibiting autophagy.

The effect of epimedium extracting solution on bone mineral density (BMD) of steroid-induced avascular necrosis of femoral head (SANFH) in rats was evaluated to further explore its function mechanism. Twenty-four Sprague-Dawley (SD) rats (male/female: 1/1) were randomly divided into three groups: the control (n=8), the glucocorticoid (n=8) and the epimedium (n=8) group. Rats in the glucocorticoid and the epimedium group were injected with prednisolone acetate injection in gluteal muscles with 15 mg/kg/day twice a week.