Profiling of bile acids and activated receptor S1PR2 in gingival tissues of periodontitis patients

牙周炎 胆汁酸 甘胆酸 医学 内科学 受体 胃肠病学 牛磺胆酸 胆酸
作者
Ruhan Yang,Weijun Yu,Lu Lin,Min Jin,Shucheng Hu,Bin Jiang,Chuanyuan Mao,Guanglong Li,Jiaqi Tang,Yuting Gu,Hui Chen,Eryi Lu
出处
期刊:Journal of Periodontology [Wiley]
卷期号:94 (4): 564-574 被引量:7
标识
DOI:10.1002/jper.22-0398
摘要

Bile acids, as a group of cholesterol metabolites, play important roles in inflammation and bone metabolism. However, the possible link between bile acids and periodontitis is still unclear. This study aimed to clarify the alterations of the bile acid profile and corresponding receptor expression levels in periodontitis patients, and evaluate their association with periodontitis severity.The concentrations of 15 bile acids in gingival tissues from 16 periodontitis patients and 16 healthy individuals were tested by metabolomics. Sphingosine-1-phosphate receptor 2 (S1PR2) expression was determined by real-time PCR and immunohistochemistry, which was also validated in two datasets, GSE16134 and GSE10334. The correlation between bile acids, S1PR2, and clinical parameters was analyzed by Spearman's correlation analysis, and receiver-operator characteristic (ROC) curves were examined to access the ability of bile acids and S1PR2 for defining local periodontitis status.In the periodontitis group, concentrations of total bile acids were elevated by increases of all bile acid forms, and five conjugated bile acids were significantly increased. Meanwhile, the expression of their receptor, S1PR2, was also upregulated in the periodontitis group. Positive correlations were further observed between glycocholic acid (GCA), taurochenodeoxycholic acid (TCDCA), taurocholic acid (TCA), S1PR2, and periodontal clinical parameters. ROC analysis also showed combinations of two bile acids (GCA and TCDCA) with S1PR2 as novel signatures for indicating local periodontitis status.Our findings demonstrated the alterations of the bile acid profile and receptor S1PR2 expression in periodontitis patients, and provided evidence of association between bile acids and periodontitis status.
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