J Immunol:全身性抗生素治疗可减少牙周炎中循环炎症树突细胞和Treg-Th17可塑性

2020-04-20 网络 网络

牙周炎(PD)是一种常见的牙周炎,是一种常见的细菌性炎症性疾病,会导致局部骨质恶化和牙齿脱落。PD患者出现低级菌血症,口腔微生物与心脏病、癌症和肾衰竭的风险有关。虽然Th17效应子对抗感染至关重要,但

牙周炎(PD)是一种常见的牙周炎,是一种常见的细菌性炎症性疾病,会导致局部骨质恶化和牙齿脱落。PD患者出现低级菌血症,口腔微生物与心脏病、癌症和肾衰竭的风险有关。虽然Th17效应子对抗感染至关重要,但Th17效应子和调节性T细胞(Tregs)的功能失衡会促进炎症性疾病。在这项研究中,我们在一项小型随机试验性临床试验中,研究了炎症性血髓样树突状细胞(DCs)的扩张和Tregs向Th17细胞的转化是否可以通过抗生素(AB)作为PD患者初始治疗的一部分来调节。

 

PD患者被随机分配为口服甲硝唑/阿莫西林AB治疗7 d或不接受AB治疗,同时进行标准护理清创术和洗必泰漱口水。16s核糖体RNA分析了关键病原体牙龈卟啉单胞菌及其成员具核梭杆菌和戈登氏链球菌的证实治疗前PD患者的储库(龈下袋和血DCs)均存在这三种。在这三个物种中,治疗后4-6周,两个水库中的牙龈卟啉单胞菌都减少了。此外,PD患者中IL-17A + FOXP3 + CD4 + T细胞上CD1C + CCR6 +髓样DC的频率和IL-1R1表达降低至健康对照水平。后者导致PD患者IL-1β刺激的Treg可塑性降低,PD的临床指标得到改善。

 

总体而言,我们确定了AB治疗在降低PD患者的炎症性DC和Treg-Th17可塑性方面具有重要的短期作用。

 

原始出处:

 

Mythilypriya RajendranStephen Looney, et al., Systemic Antibiotic Therapy Reduces Circulating Inflammatory Dendritic Cells and Treg-Th17 Plasticity in Periodontitis. J Immunol. 2019 May 1;202(9):2690-2699. doi: 10.4049/jimmunol.1900046. 

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    2020-04-22 zhaojie88
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