J Clin Periodontol:牙周炎引发关节炎的加重依赖于白细胞介素-17受体A的活性

2017-05-20 lishiting MedSci原创

这篇研究的目的是为了评估:1. 牙龈卟啉单胞菌诱导的牙周炎是否会加重抗原诱发性关节炎模型的损伤;2. 这种影响是否依赖于辅助性T 细胞17(Th17)/白细胞介素-17(IL-17)信号通路。

这篇研究的目的是为了评估:1. 牙龈卟啉单胞菌诱导的牙周炎是否会加重抗原诱发性关节炎模型的损伤;2. 这种影响是否依赖于辅助性T 细胞17(Th17)/白细胞介素-17(IL-17)信号通路。

抗原诱发性关节炎是通过向C57BL/6野生型(WT)裸鼠和白细胞介素-17受体A(IL-17RA)敲除小鼠的膝关节局部注射甲基化牛血清白蛋白构建而成。裸鼠或关节炎小鼠的牙周疾病是通过向口腔注射牙龈卟啉单胞菌诱导形成。实验动物在感染后的7, 15和30天处死。随后分析牙槽骨丢失、关节组织病理学、关节疼痛过敏情况和关节细胞因子产物变化。除此之外,从腹股沟淋巴结分离出来的Th17和Treg细胞比例也进行对照分析。

结果显示,牙龈卟啉单胞菌并未造成实验性关节炎小鼠的牙槽骨丢失,对其没有影响。然而,与未注射小鼠相比,牙龈卟啉单胞菌加重实验性关节炎小鼠的关节损伤,并增加Th17的比例。在牙周炎加重关节炎的同时,还伴随着肿瘤坏死因子(TNF)和IL-17产物的增加以及关节内中性粒细胞的浸润。相反,在IL-17RA缺失的小鼠中,关节炎的加重和关节内中性粒细胞浸润的情况却未曾发生。

结论:牙龈卟啉单胞菌诱导发生的牙周炎对关节炎的影响依赖于Th17的扩充和IL-17RA信号,最终导致关节内大量的中性粒细胞浸润。

原始出处

de Aquino SG, Talbot J, et al. The aggravation of arthritis by periodontitis is dependent of IL-17 receptor A activation. J Clin Periodontol. 2017 May 12. doi: 10.1111/jcpe.12743.

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    2017-09-11 feather89
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    2017-05-22 lmm397
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    2017-05-22 秋水仙

    很有趣的说

    0

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    2017-05-21 lyh994

    依赖于Th17的扩充和IL-17RA信号,最终导致关节内大量的中性粒细胞浸润。

    0

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    2017-05-21 lou.minghong

    学习

    0

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香芹酚是一种具有抗炎效果的单萜酚,并且它是食用香茶菜的主要成分。这篇研究的目的是为了评估香芹酚对实验性大鼠牙周炎模型造成的牙周损伤的作用。

J Periodontol:种植体周围炎和牙周炎一样吗?

本研究旨在通过横断面研究收集接受种植修复患者其健康及种植体周围炎位点的龈沟液来评估其种植体龈沟液(PICF)/龈沟液(GCF)中细胞因子的水平。 研究共纳入了15名无系统性疾病的研究对象,共包括97颗种植体/牙齿(58颗种植体:19颗健康,20颗种植体周围黏膜炎,19颗种植体周围炎;39颗天然牙:19颗健康,12颗牙龈炎,8颗牙周炎),收取PICF/GCF进行免疫检测,实时定量PCR分析。收

J Clin Periodontol:牙周手术结合抗菌光动力疗法治疗慢性牙周炎的效果观察:一项临床随机对照试验

这篇研究的目的是为了评估单项辅助治疗-抗菌光动力疗法(aPDT)对罹患严重慢性牙周炎(SCP)的患者实施牙周外科手术(ST)时的疗效。研究采用分口设计,将20名罹患SCP患者分别施以aPDT+ST(测试组,TG)或仅ST治疗(对照组,CG)。aPDT的实施是通过二极管激光器和吩噻嗪光敏剂进行单次偶发。在实施牙周手术治疗后,监控所有患者的术后疗效90天。分别在术前、术后60和150天,通过棋盘式DN