鹿茸粉对股骨头缺血性坏死模型大鼠的治疗作用

背景:长期使用类固醇激素容易引起股骨头缺血性坏死,中药鹿茸具有骨生长因子,能促进伤口愈合、组织修复,可能对股骨头缺血性坏死具有治疗作用.目的:观察鹿茸粉对大鼠激素诱导性股骨头缺血性坏死的治疗作用.方法:将42 只雄性wistar 大鼠分成空白对照组、模型组和高、中、低剂量治疗组.1 周2 次臀部肌肉注射给予地塞米松(30 mg/kg),连续6 周.高、中、低剂量治疗组按200,400,800 mg/kg 剂量灌胃鹿茸粉,每天1 次,空白对照组、模型组给予同量生理盐水.治疗2 个月后,测量大鼠血脂水平,取两侧股骨头测量骨密度、病理变化及血管内皮细胞生长因子表达.结果与结论:类固醇激素干预后,大鼠造成明显股骨头缺血性坏死损伤,经过治疗后高、中、低剂量治疗组大鼠损伤骨组织明显恢复,与模型组相比,骨密度增高,总胆固醇、三酰甘油和低密度脂蛋白水平下降,股骨血管内皮细胞生长因子表达上升.提示鹿茸粉能通过增加骨形成,改善脂肪代谢和增加血管形成来治疗激素诱导性股骨头坏死.

Effects of antler powder on treatment of corticosteroid-induced avascular necrosis of the femoral head in rats

BACKGROUND: Long-term utilization of steroid hormone easily induces avascular necrosis of the femoral head (ANFH). Cornu Cervi Pantotrichum possesses bone growth factor and can promote wound healing and tissue repairing, which may has effect on treatment of ANFH. OBJECTIVE: To investigate therapeutic effect of antler powder on ANFH induced by corticosteroids in rats. METHODS: Totally 42 male wistar rats were randomly divided into the blank control, model and high-, moderate- and low-dose treatment groups. Exception those in the blank control group, all rats were intragluteally injected with dexamethasone at 30 mg/kg twice per week for 6 weeks to induce ANFH. Then the rats were treated with antler powder by oral gavage at 200, 400 and 800 mg/kg dosage, once per day for 60 days. Same volume of physiological saline was gavaged in the blank control and model groups. Serum lipid level and bone mineral density (BMD) of femur were measured, pathological change and expression of vascular endothelial growth factor (VEGF) were investigated. RESULTS AND CONCLUSION: Steroid hormone intervention resulted in obviously ANFH in rats. After treatment with antler powder, the degree of necrosis was significant reduced. Compared with the model group, BMD were increased, total cholesterol, triacylglycerol, and low density lipoprotein levels were decreased, and the VEGF expression increased in the treatment groups. The results suggest that antler powder has a positive curative effect on ANFH by promoting bone formation, fat metabolism and increasing VEGF expression.