J Endod:Resolvin E1通过Chemerin受体23抑制牙髓成纤维细胞活性改善牙髓炎

2019-08-08 lishiting MedSci原创

及时解决牙髓炎症反应是治愈感染牙髓的首要事务。间质细胞在处理炎症过程中起到至关重要的作用,特别是成纤维细胞。Resolvin E1 (RvE1)是一种脂质来源的内源性分子,可介导处理炎症过程。这篇研究的目的是为了评估RvE1在牙髓炎致病过程中对牙髓成纤维细胞的作用。

及时解决牙髓炎症反应是治愈感染牙髓的首要事务。间质细胞在处理炎症过程中起到至关重要的作用,特别是成纤维细胞。Resolvin E1 (RvE1)是一种脂质来源的内源性分子,可介导处理炎症过程。这篇研究的目的是为了评估RvE1在牙髓炎致病过程中对牙髓成纤维细胞的作用。

研究将雄性SD大鼠(N = 50)上颌切牙牙髓组织暴露于口腔环境中0, 9, 24和48小时,随后施以RvE1或空载体刺激。通过HE染色、免疫组化、酶联免疫吸附测定和定量聚合酶链式反应检测24小时后的炎症变化。通过IF、WB和定量聚合酶链式反应检测大鼠牙髓组织以及人牙成纤维细胞中Chemerin受体23 (ChemR23)的表达。最后,采用siRNA敲除研究评估抑制RvE1对人牙髓成纤维细胞促炎症基因和KFkB信号的影响。

结果显示,使用RvE1早期治疗(within 24 hours after pulp exposure)能够减少炎症细胞的数量以及促炎症因子的表达。并且,它能够减弱感染牙髓组织中成纤维细胞样细胞ChemR23的表达。体外,ChemR23广泛表达于人牙成纤维细胞中。RvE1能够显著抑制成纤维细胞中因子的产生,下调这些细胞中NFkB p65的核转移。敲除ChemR23几乎阻断了RvE1的抗炎症作用。

结论:RvE1通过ChemR23抑制牙髓成纤维细胞的活性,并在炎症早期阶段抑制炎症反应。

原始出处:

Xu H, Chen J, et al. Resolvin E1 Ameliorates Pulpitis by Suppressing Dental Pulp Fibroblast Activation in a Chemerin Receptor 23-dependent Manner. J Endod. 2019 Jul 25. pii: S0099-2399(19)30360-7. doi: 10.1016/j.joen.2019.05.005.

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    2019-11-16 jxrzshh
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    2019-08-10 hongbochen
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