高剂量糖皮质激素对成年雄性小鼠PDGF-BB分泌及H型血管生长的作用研究

被引:10
作者
李素丽
詹先琴
张艳君
马艳荣
王英
王燕
机构
[1] 新疆维吾尔自治区人民医院
关键词
糖皮质激素性骨质疏松症; 血小板衍化生长因子-BB H型血管;
D O I
暂无
中图分类号
R580 [];
学科分类号
摘要
目的探讨长期高剂量糖皮质激素对雄性成年小鼠血小板衍化生长因子-BB(PDGF-BB)分泌的影响以及对骨成长特异H型血管的作用。方法选取雄性3月龄C57小鼠,通过腹腔注射强的松龙10 mg/m2,持续四周,建立糖皮质激素性骨质疏松症组(GIOP组),同时设定对照组。测定血清骨形成标志物骨钙素(OC)、骨特异性碱性磷酸酶(BSAP)、胶原氨基酸延长肽I(PINP)及骨吸收标志物血清C端交联肽(CTX);测定骨髓上清和血清的PDGF-BB;对股骨行Micro-CT扫描;将股骨冰冻切片,行CD31hiEmcnhiH型血管免疫荧光染色。结果 GIOP组血清中CTX-1表达上升,BSAP、OC和PINP表达下降,股骨Micro CT显示GIOP组相对于对照组骨量减少,GIOP组血清和骨髓中的PDGF-BB表达明显下降,CD31hi和Endomucinhi表达均有所下调。结论长期高剂量糖皮质激素对成年雄性小鼠破骨前体细胞PDGF-BB分泌有抑制作用,对骨成长特异的H型血管生长有抑制作用。骨特异的H型血管生长被抑制是糖皮质激素性骨质疏松症的发病机制之一。
引用
收藏
页码:1752 / 1756
页数:5
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