续苓健骨方对骨质疏松模型大鼠骨密度及骨生物力学的影响

目的：研究续苓健骨方对骨质疏松模型大鼠骨密度、骨生物力学指标的影响。方法将40只SD雌性大鼠按随机数字表法分为假手术组、模型组、钙尔奇D组和续苓健骨方组各10只。除假手术组外，其余各组制备骨质疏松模型。造模后30 d开始灌胃给药，钙尔奇D组大鼠灌胃钙尔奇D混悬液0.126 g/kg；续苓健骨方组灌胃续苓健骨方药液15 g/kg；假手术组和模型组灌胃等体积生理盐水，1次/d。给药12周后取材。采用双能X射线检测左胫骨骨密度，三点弯曲法行骨生物力学检测。结果续苓健骨方组骨密度(0.244±0.022)g/cm2比(0.195±0.017)g/cm2]较模型组增高(P＜0.01)，且明显高于钙尔奇 D组(0.244±0.022)g/cm2比(0.223±0.013)g/cm2]；续苓健骨方组断裂点荷载(0.072±0.036)kN 比(0.041±0.015)kN]、应力(843.754±428.722)N/mm2比(482.084±176.646)N/mm2]较模型组增高(P＜0.05)。结论续苓健骨方可提高骨质疏松模型大鼠的骨密度，改善骨生物力学性能。

The effects ofXuling-Jianguformula on bone mineral density and the bone biomechanic in osteoporosis model rats

Objective To study the effects ofXuling-Jiangu formula on bone mineral density and the bone biomechanic in the osteoporosis model rats.Methods According to the random number table method, 40 SD female rats were randomly divided into the caltrate D group, theXuling-Jianguformula group, the model group and the sham group,10 rats each group. In addition to the sham group, the other groups were osteoporosis model. After 30 days, the Caltrate D group received intragastric caltrate D mixed suspension 0.126 g/kg; the Xuling-Jiangu formula group receivedXuling-Jianguformula solution 15 g/kg, and the sham group and the model group received normal saline 10 ml/kg. After 12 weeks treatment, detection of left tibia bone mineral density andthree-point bending method was used for biomechanical testing.Results The mineral density of the Xuling-Jiangu formula group (0.244 ± 0.022 g/cm2,0.195 ± 0.017 g/cm2vs. 0.223 ± 0.013 g/cm2) were significantly higher than the model group and caltrate D group (P<0.01); compared with the model group, the bone biomechanictests in theXuling-Jiangu formula group (0.072 ± 0.036 kN vs.0.041 ± 0.015 kN; 843.754 ± 428.722 N/mm2vs. 482.084 ± 176.646 N/mm2) were significantly higher (P<0.05).ConclusionXuling-Jiangu formula canimprove the bone mineral density and the bone lbiomechanic of osteoporosis rats.