替勃龙治疗去势大鼠骨质疏松症的研究

Study on Osteoporosis of Castration Rats Treated with Tibolone

目的探讨替勃龙对去势大鼠骨质疏松症的治疗效果。方法选用3月龄雌性W istar大鼠按体重随机分为假手术组、模型组、替勃龙组、雌激素组4组,假手术组和模型组每天等量赋型剂灌胃,替勃龙组和雌激素组分别给予替勃龙和雌激素灌胃,于用药后50d处死全部动物,分别测定大鼠股骨的骨密度和骨组织形态计量参数。结果(1)骨密度(BMD)检测结果:模型组BMD低于假手术组(P<0.05),替勃龙组和雌激素组BMD高于模型组(P<0.05),替勃龙组BMD高于雌激素组(P<0.05)。(2)骨组织形态计量学分析结果:模型组骨小梁体积(TBV)、骨小梁表面(TBS)、纵向骨生长率(LBGR)、骨皮质矿化率(mAR)低于假手术组(P<0.05),骨小梁形成表面(TFS)、活性生成面(AFS)、骨小梁骨生成率(BFR)、骨小梁吸收表面(TRS)四项指标则高于假手术组(P<0.05);模型组TBV、TBS、LBGR、mAR低于替勃龙组和雌激素组(P<0.05);TFS、AFS、BFR、TRS则高于替勃龙组和雌激素组(P<0.05);替勃龙组TBV、TBS高于雌激素组(P<0.05);AFS、BFR、TRS低于雌激素组(P<0.05)。结论替勃龙治疗骨质疏松症疗效优于雌激素,明显改善去势大鼠骨小梁厚度,使骨小梁体积百分比增加,皮质骨平均厚度变厚,骨量增加。

OBJECTIVE To explore the curative effect of Tibolone on osteoporosis of castration rats.METHODS Forty female wistar rats about 3 months old were divided into 4 groups by body weight randomly.The 4 groups were false operation group,model group,Tibolone group and estrin group respectively.The animals of false operation group and model group were given placebo through enema.While the animals of Tibilone group and estrin group were given Tibolone and estrin respectively through enema.All animals were executed a...