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增龄因素对微钛钉周围骨组织RANKL mRNA表达的影响 被引量:3

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摘要 目的研究增龄因素对正畸支抗微钛钉周围骨组织细胞核因子-κB受体活化因子配基(RANKL)mRNA表达的影响。方法 10只3月龄和10只6月龄雄性新西兰兔应用微钛钉40枚(2枚/只),分别植入在兔双侧上颌骨内。植入3周后右侧加载150g牵引力,加载3周后处死,逆转录-聚合酶链反应(RT-PCR)检测微钛钉周围骨组织中RANKL mRNA的表达。结果所有微钛钉均保持稳定,无松动、脱落现象。未加载的微钛钉周围骨组织中RANKL mRNA表达,3月龄组明显高于6月龄组(P<0.01)。加载的微钛钉周围骨组织中RANKL mRNA表达均有升高,压力侧均明显高于张力侧(P<0.05),3月龄组明显高于6月龄组(P<0.05)。结论幼年兔RANKL mRNA表达增高,骨吸收明显增强,且压力侧更为明显,这可能导致微钛钉在骨中稳定性下降。
出处 《重庆医学》 CAS CSCD 北大核心 2011年第31期3171-3173,共3页 Chongqing medicine
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