Clin Oral Investig:白细胞介素-1β对牙周膜细胞ghrelin受体的影响

2018-03-17 lishiting MedSci原创

牙周病致病因子通过释放炎症介质(如:白细胞介素(IL)-1β, IL-6和IL-8)诱导免疫反应。Ghrelin (GHRL)是一个食欲激素,它通过与功能性受体GHS-R1a相结合介导自身的功能。这篇研究的目的是为了检测炎症损伤对人牙周膜细胞GHS-R1a的影响。

牙周病致病因子通过释放炎症介质(如:白细胞介素(IL)-1β, IL-6和IL-8)诱导免疫反应。Ghrelin (GHRL)是一个食欲激素,它通过与功能性受体GHS-R1a相结合介导自身的功能。这篇研究的目的是为了检测炎症损伤对人牙周膜细胞GHS-R1a的影响。

在存在GHRL与否的情况下,将牙周膜细胞(PDL)和成龈纤维细胞(HGFs)暴露于IL-1β。另外,细胞预先施以NF-κB或MEK1/MEK2信号的特异性阻断剂进行孵育。通过real-time PCR检测GHS-R1a和促炎症介质的基因表达,通过免疫组化检测GHS-R1的蛋白水平,并通过免疫荧光检测NF-κB的核转运。

结果显示,在2种细胞中,IL-1β均已剂量依赖的方式显著增加GHS-R1a的表达。IL-1β的刺激作用涉及NF-κB和MAPK通路。IL-1β也会显著增加2种细胞内GHS-R1蛋白的表达。另外,GHRL会明显中和IL-1β对PDL细胞中IL-6和IL-8的刺激作用。

结论:这篇研究首次阐明IL-1β会上调牙周膜成纤维细胞中功能性ghrelin受体的表达。并且,这些结果也进一步验证了假说:GHRL/GHS-R系统发挥着抗炎症的作用。因此,在牙周膜细胞中上调ghrelin受体应对炎症刺激可能代表着一种负反馈调节机制来减弱牙周疾病最初的炎症进程。

临床意义:GHRL/GHS-R抗炎系统可能会成为预防和治疗牙周病的一种有希望的新靶点。

原始出处:

Nokhbehsaim M, Memmert S, et al. Effect of interleukin-1β on ghrelin receptor in periodontal cells. Clin Oral Investig. 2018 Mar 14. doi: 10.1007/s00784-018-2417-y.

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    2018-04-18 小几洁
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    2018-10-18 xqptu
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