Effect of 11β-HSD1 inhibitor on bone microstructure and bone density in rats with femoral head necrosis

OBJECTIVES: To investigate the effect of 11β-hydroxysteroid dehydrogenase (11β-HSD1) inhibitor on bone microstructure and bone density in rats with femoral head necrosis. METHODS: Eighty Sprague-Dawley (SD) rats were selected and randomly divided into two groups. One group was selected for femoral head necrosis modeling. Then the modeled rats were randomly divided into two groups, one group was injected with 11β-HSD1 inhibitor as the treatment group, and the other group was used as the model. The unmodeled rats were also randomly divided into two groups, one group was injected with 11β-HSD1 inhibitor as the control group, and the other group was taken as the normal group. The bone microstructure and femoral bone density of 4 groups of rats were observed. RESULTS: There were no significant differences in bone microstructure and bone density between the treatment group and the model group before injection (P> 0.050), but they were significantly improved after injection (P<0.001). There was no significant difference in superoxide dismutase (SOD) and malondialdehyde (MDA) between the control group and the normal group (P>0.050). SOD increased significantly, and MDA decreased significantly after injection in the treatment group (P<0.001). CONCLUSIONS: 11β-HSD1 inhibitor can effectively improve the bone microstructure of femoral head necrosis rats and increase bone density, which can be used as a new scheme for the treatment of femoral head necrosis in the future.