通络生骨胶囊预防激素性股骨头缺血性坏死的药效学实验

目的探讨通络生骨胶囊对激素性股骨头缺血性坏死的预防作用.方法建立大鼠激素性股骨头缺血性坏死模型. SD大白鼠 120只随机分成正常组、模型组、安妥明组、通络生骨胶囊高、中、低剂量组.每周注射激素 1次,每日灌胃药物 1次.于实验后第 4周、第 8周、第 12周分 3批处死动物,进行股骨头大体形态及光镜检查,墨汁灌注透明片观察,并用全自动图象分析处理系统进行病理图象的分析处理、骨的组织形态学和计量学分析.结果通络生骨胶囊各组骨小梁质量较好,与正常组基本一致;空骨陷窝率较模型组显著降低;股骨头髓腔中脂肪变性程度较模型组明显减轻;软骨下血管计数及软骨下区小血管直径与模型组比较有显著增加(P<0.01),光镜下小血管结构较模型组完整,无明显髓腔内出血征象;墨汁灌注透明片显示血管密度较模型组及安妥明应用组显著增高(P<0.01);成骨细胞计数较模型组显著增加(P<0.01),破骨细胞计数较模型组显著降低(P<0.01).结论通络生骨胶囊对激素性股骨头缺血性坏死有明显的预防作用.

Experimental Research on Prevention of Glucocorticoid-induced Avascular Necrosis of The Femoral Head with Tongluo Shenggu Capsule

Objective To evaluate the prevention of glucocorticoid -induced avascular necrosis of the femoral head(ANFH)with Tongluo Shenggu Capsule(TSC).Methods One hundred and twenty adult SD rats were randomized into six groups:normal control group,model group,clofibratum group and three -dose TSC groups(high -,moderate -and low -dose respectively).ANFH rat models were established by injection of glucocorticoid once per week and the med-ication groups were given drugs by ga stric infusion one time a day.The rats were killed in the fourth,eighth and twelfth week respectively.Then the macrosc opic and microscopic feature of the f emoral head were observed,and ink -p erfused specimens of the femoral head were detected and analyzed by auto -photograph software of Metamoph to evaluate the pre-ventive effect of TSC.Results In TSC groups,bone trabecula grew we ll,similar to the normal group;lacu nar bone per-centage was lower than that in the mod el group;fatty degeneration in marrow cavity of the femoral head was redu ced,andthe number of subcartilaginous bloo d vessels and their diameter were increased as compared with those in the model group(P<0.01).The microscopic structure of the sm all subcartilaginous blood vessels was normal with no obvious bleeding signs in the marrow cavity.Ink -perfused specimens showed that the vesse l density was increased as compared w ith the model group and clofibratum group(P<0.01);the number of osteoblast was increased and that of osteoclast decreased in TSC groups as compared with the model group(P<0.01).Conclusion TSC has a remarkable preventive effe ct on ANFH.