运动对去卵巢大鼠骨组织形态计量学的影响

目的评价运动对去卵巢大鼠骨组织形态计量学的影响。方法46只SD大鼠随机分为正常对照组(A组)、去卵巢手术组(B组)、雌激素对照组(C组)、运动组(D组)。A组行假手术,其余各组行双侧卵巢切除术,术后3 个月开始为期3 个月的治疗。C组用尼尔雌醇治疗,D组按要求进行运动。治疗结束后对胫骨作骨组织形态计量学分析。结果D组的骨小梁面积、骨小梁面积百分数、骨小梁周长、骨小梁数目明显高于B组,且在行卵巢切除术各组中骨小梁分离度、单位骨小梁面积破骨细胞数、每毫米破骨细胞数最低,荧光周长百分数、矿化沉积率、骨形成率最大。结论运动能增加去卵巢大鼠骨的骨量,具有促进骨形成和抑制骨吸收的双重作用。

Effects of exercise training on bone histomorphometry of ovariectomized rats

ObjectiveTo evaluate the effects of exercise training on bone histomorphometry of ovariectomized rats.Methods46 SD rats were randomly divided into the normal control group (group A), ovariectomized group (group B) , estrogen supplement group (group C) and exercise training group (group D). The rats of group A had a sham operation, while that of other groups was ovariectomized. 3 months after operation, the rats had been treated for 3 months. The rats of group C were given estradiol, and the rats of group D were trained by exercise. The tibia sections were studied by histomorphometric analysis.ResultsThe values of the trabeclar area, trabeclar area%, trabeclar perimeter and trabeclar number of group D were significantly higher than that of group B. The values of the trabeclar separation, osteoclast number/mm 2 and osteoclast number/mm of group D were the least in all groups, which had been ovariectomized. The values of the labeled perimeter % mineral apposition rate, bone formation rate of group D were superior to that of all groups.ConclusionThe exercise training can increase bone mass of ovariectomized rats, which had double effects of promoting bone formation and restraining bone absorption.