J Periodontal Res:桂皮酸减弱实验性牙周炎的牙周炎症和牙槽骨缺失

2020-05-19 lishiting MedSci原创

牙周炎是发生在牙周组织上的一种慢性破坏性疾病,会导致组织发生严重炎症反应。桂皮酸是一种不饱和羧酸,可能会抑制炎症和牙周破坏。这篇研究的目的是为了评估桂皮酸在2种形态下(游离桂皮酸和桂皮酸脂质体)对Wi

牙周炎是发生在牙周组织上的一种慢性破坏性疾病,会导致组织发生严重炎症反应。桂皮酸是一种不饱和羧酸,可能会抑制炎症和牙周破坏。这篇研究的目的是为了评估桂皮酸在2种形态下(游离桂皮酸和桂皮酸脂质体)对Wistar大鼠实验性牙周炎的影响。

研究使用32只雌性大鼠。共分为4组:C:对照组;P:牙周炎组;C-P:施以游离桂皮酸的牙周炎组和CL-P:应用桂皮酸脂质体组。通过在下颌左右第一磨牙4-0丝线结扎构建实验性牙周炎。研究周期为30天,并且在诱导牙周炎的组中去除一半大鼠的结扎。另一边结扎贯穿整个研究周期,并且所有大鼠在第30天安乐死。提取下颌骨并通过体式显微镜观察,随后进行组织学评估。通过HE染色进行炎症细胞计数、成骨细胞和破骨细胞计数,通过免疫组化检测peroxisome proliferator-activated receptor (PPAR)-γ, cyclooxygenase (COX)-2, receptor activator of nuclear factor κ-B (RANKL)和osteoprotegerin (OPG)的表达情况。

结果显示,对照组牙槽骨破坏最低,与其他组相比,牙周炎伴随持续结扎组的骨破坏最高。去除结扎为骨检测提供了显著的改善。炎症细胞和破骨细胞计数在牙周炎组中更高,并且应用2种桂皮酸均能减少这些数值。成骨细胞在牙周炎组中数量最低,桂皮酸能够增加这些计数。PPAR-γ和COX-2的表达水平在牙周炎组中更高,桂皮酸能够减弱它们的表达水平但不具有显著性,除了应用桂皮酸脂质体的移除结扎组,其PPAR-γ和COX-2表达水平明显降低。桂皮酸显著减少RANKL、增加OPG的表达水平。

结论:牙周炎导致炎症反应及骨破坏增强,并伴随PPAR-γ, COX-2和RANKL的表达上调以及破骨细胞计数增加。在此项实验性牙周炎动物模型中,桂皮酸减少破骨细胞数量以及炎症反应程度,并增加成骨细胞数量以及OPG的表达。

原始出处:

Karatas O, Balci Yuce H, et al. Cinnamic acid decreases periodontal inflammation and alveolar bone loss in experimental periodontitis. J Periodontal Res., 2020 Apr 26. doi: 10.1111/jre.12754.

 

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    2020-12-27 lujian
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    2020-12-20 feather89
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    2021-02-15 mei540
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    2020-05-21 zll0630
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    2020-05-20 一天没事干

    很好的学习机会

    0

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    2020-05-19 qingfengqishi5

    学习了,学习了

    0

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