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- W870387512 abstract "目的:观察大鼠正畸牙局部联合应用血小板衍生生长因子-BB(PDGF-BB)和转化生长因子-β1(TGF-β1)后正畸牙牙周膜中整合素β3表达的变化。方法按随机数字表法,将32只大鼠随机均分为4组。建立大鼠上颌第一磨牙近中移动正畸模型,隔日于施力磨牙颊侧牙龈黏膜下分别注射1%PBS、10 ng PDGF-BB、5 ng TGF-β1、10 ng PDGF-BB和5 ng TGF-β1叠加剂量,注射体积均为0.1 mL。加力10 d后处死动物,取左上颌第一磨牙及其牙周组织,用免疫组织化学方法检测牙周组织中整合素β3的表达,进行阳性表达区域平均光密度值测量,对测量结果行方差分析,服从正态分布,再行组间t检验统计学分析。结果各实验组压力侧牙周膜细胞中整合素β3的表达强度均高于对照组(P〈0.01),其中PDGF-BB+TGF-β1组与TGF-β1组或PDGF-BB组比较差异均有统计学意义(P〈0.01)。实验组张力侧牙周膜细胞中整合素β3的表达强度均高于对照组(〈0.05),其中PDGF-BB+TGF-β1组整合素β3表达强度较强,与TGF-β1或PDGF-BB组比较差异无统计学意义(P〉0.05)。结论局部联合应用外源性PDGF-BB和TGF-β1对大鼠正畸牙牙周组织中整合素β3的上调作用较单独运用PDGF-BB或TGF-β1组强,二者联合应用有协同效应,共同促进了正畸牙周组织改建。" @default.
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- W870387512 date "2014-01-01" @default.
- W870387512 modified "2023-09-28" @default.
- W870387512 title "血小板衍生生长因子-BB、转化生长因子-β1联合应用对大鼠正畸牙牙周膜中整合素β3表达的影响" @default.
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