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J Periodontal Res: :龈沟局部应用甘草次酸对脂多糖诱导的实验性牙周炎附着丧失的抑制作用

2018-07-26 MedSci MedSci原创

结合上皮的附着丧失和牙槽骨破坏是牙周炎的征兆,主要由牙菌斑引起的炎症反应导致。 Glycyrrhetinic acid(GA)是甘草的一种成分,已被证明具有重要的抗炎活性;然而,之前没有关于其抑制牙周病的能力的报道。因此,本研究中使用实验性牙周炎模型评估GA是否对附着丧失和牙槽骨吸收有预防作用。

结合上皮的附着丧失和牙槽骨破坏是牙周炎的征兆,主要由牙菌斑引起的炎症反应导致。 Glycyrrhetinic acid(GA)是甘草的一种成分,已被证明具有重要的抗炎活性;然而,之前没有关于其抑制牙周病的能力的报道。因此,本研究中使用实验性牙周炎模型评估GA是否对附着丧失和牙槽骨吸收有预防作用。

用大肠杆菌脂多糖(LPS)腹腔内免疫大鼠。 LPS组(n = 5)接受3次50μg/μL LPS局部应用,然后将一次载体(丙二醇:乙醇:磷酸盐缓冲盐水[PBS] = 8:1:1)施用到龈沟中。该方案每天重复两次,持续10天。低(n = 5)和高(n = 5)组分别局部施用LPS和0.03%或0.3%GA。对照组接受PBS和载体的局部应用。第10天处死大鼠。通过组织学研究附着丧失,牙槽骨水平和炎性细胞浸润。免疫组织学评估免疫复合物的形成和LPS的浸润。

结果:与对照组相比,LPS组的附着丧失,免疫复合物的形成和炎性细胞的浸润增加,并且与LPS组相比,在低和高组中完全抑制。与对照组和GA治疗组相比,LPS组显示出更多的牙槽骨吸收。此外,在LPS组中检测到LPS的侵袭,而对照组中没有,并且在GA处理组中比在LPS组中更弱。

在本研究发现GA抑制大鼠实验性牙周炎模型中的牙周破坏。

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    2019-06-01 feather89
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    2019-05-14 lujian
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    2018-07-28 chg122
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