Objective To explore the effect of curcumin combined with aerobic exercise on bone density, oxidative stress ability, and NF-κB in bone tissue of osteoporotic rats. Methods Forty SPF female healthy rats were induced to establish an OP model by removing bilateral ovaries. They were divided into 4 groups equally, Dd group (OP model + curcumin), Lh group (OP model + curcumin + aerobic exercise), OP Group (OP model), and Zc group (sham operation group). The levels of different index were detected with different methods. Results Compared with the Zc group, bone mineral density (BMD) of the femur in the Dd, Lh, and OP groups decreased. Compared with the OP group, BMD of the femur increased in the Dd group. Compared with the Dd group, BMD in the Lh group increased (P<0.05). The percentage of trabecular bone volume in the Zc group (29.15 ± 5.45)% was significantly higher than that in the OP group (10.11 ± 4.09) % (P <0.05). After curcumin intervention, it increased to (24.08 ± 5.03)% in Dd group, and it was (29.55 ± 6.33)% in Lh group (P<0.05). The levels of GSH-Px and SOD from high to low were in Zc group, Lh group, Dd group, and OP group. The levels of MDA from high to low were in OP group, Dd group, Lh group, and Zc group (P<0.05). The trabecular structure of the Zc group was good and there was no obvious pathological changes. The pathological changes in the trabecular bone in the OP group were serious. The trabecular bone was uneven in thickness and arranged irregularly. There were multiple bone marrow areas with no trabecular structure in OP group. In Dd group, some bone marrow areas had no trabecular structure, and the arrangement state was better than that in OP group. In Lh group, part of the bone trabecular structure returned to normal, and there was bone trabecular structure in the bone marrow area, with only a few uneven arrangement. Compared with that in Zc group, the NF-κB level and protein expression in OP group increased significantly. Compared with those in OP group, the NF-κB level and protein expression in Dd group and Lh group decreased, and they were lower in Lh group than in Dd group (P<0.05). Conclusion Curcumin combined with aerobic exercise significantly improves BMD and oxidative stress in OP rats, and reduces the expression of NF-κB in the bone tissue. |