摘要
背景:骨组织中存在肾素-血管紧张素-醛固酮系统组分,近年来对抗高血压药物的研究,发现血管紧张素转换酶抑制剂类降压药对骨质疏松可能也有效,培哚普利是常用的此类降压药之一,其对骨代谢有什么影响及能否用于抗骨质疏松,未见文献报道。目的:观察培哚普利对维甲酸溶液致骨质疏松模型大鼠骨代谢的影响。方法:将50只SD大鼠随机分5组,每组10只。模型组及各培哚普利剂量组大鼠予维甲酸溶液80 mg/(kg·d)灌胃,造模成功后培哚普利2,4,8 mg/(kg·d)组分别给予相应剂量培哚普利灌胃干预,1次/d,连续42 d;正常对照组及模型组均灌予等容积蒸馏水。检测各组大鼠血清钙、磷、碱性磷酸酶以及骨质量、骨密度,并分别测定骨组织中骨特异性碱性磷酸酶及抗酒石酸酸性磷酸酶m RNA的表达量。结果与结论:与模型组比较,经培哚普利治疗后,维甲酸所致骨质疏松大鼠血清钙、磷水平升高,碱性磷酸酶活性显著降低,骨质量和骨密度显著升高。培哚普利8 mg/(kg·d)组骨特异性碱性磷酸酶m RNA相对表达量要高于培哚普利2,4 mg/(kg·d)组及模型组;培哚普利8 mg/(kg·d)组抗酒石酸酸性磷酸酶m RNA相对表达量高于模型组。提示培哚普利能改善骨质疏松大鼠部分骨代谢生化指标,并通过上调骨特异性碱性磷酸酶m RNA的表达促进骨形成,对维甲酸所致的骨质疏松有一定的防治作用。
BACKGROUND： Renin-angiotensin-aldosterone system existed in bone tissue. Recent studies on antihypertensive drugs found that angiotensin converting enzyme inhibitor type antihypertensive drug was possibly effective for osteoporosis. Perindopril is one of the commonly used antihypertensive drugs. Whether perindopril affected bone metabolism or could be used in anti-osteoporosis has not been reported. OBJECTIVE： To observe effects of perindopril on bone metabolism in a rat model of osteoporosis induced by retinoic acid. METHODS： Fifty Sprague-Dawley rats were randomly divided into five groups, with ten in each group. In the model group and each perindopril groups, rats were intragastricaly administered retinoic acid solution 80 mg/kg per day. After successful model establishment, rats in different perindopril groups were intragastrical y administered perindopril 2, 4 and 8 mg/kg per day, once a day, for 42 consecutive days. In the normal control and model groups, rats were given an equal volume of distil ed water. Serum calcium, phosphorus, alkaline phosphatase, bone mass and bone mineral density were detected in each group. Expression of bone specific alkaline phosphatase and tartrate-resistant acid phosphatase mRNA in bone tissue was determined. RESULTS AND CONCLUSION： Compared with the model group, after treatment with perindopril, serum calcium and phosphorus levels were increased, alkaline phosphatase activities were significantly decreased, bone mass and bone mineral density were obviously increased in rats with retinoic acid-induced osteoporosis. Expression of bone specific alkaline phosphatase mRNA was higher in the perindopril 8 mg/kg group than in the perindopril 2 and 4 mg/kg groups and model group. Tartrate-resistant acid phosphatase mRNA expression was higher in the perindopril 8 mg/kg group than in the model group. These results indicated that perindopril could improve partial bone metabolic biochemical markers in osteoporosis rats, promoted bone formation by up-regulating bone specific alkaline phosphatase mRNA expression, and had a certain preventive effect on retinoic acid-induced osteoporosis.
出处
《中国组织工程研究》
CAS
北大核心
2016年第18期2589-2595,共7页
Chinese Journal of Tissue Engineering Research
