Changes of Th17 cells in systemic lupus erythematosus with cardiac involvement / 中华风湿病学杂志

ABSTRACT

ObjectiveTo investigate the role of Thl7 cells in the pathogenesis of SLE patients with cardiac involvement,and to understand the value of cardiac markers in SLE patients with cardiac involvement.MethodsSerum IL-17A levels were measured by enzyme-linked immunosorbent assay in 47 SLE patients with cardiac involvement (group Ⅰ ),55 SLE patients without cardiac involvement (group Ⅱ ) and 38 healthy controls(group Ⅲ ).The ADVIA Centaur(R)-XP immunoassay analysis system and Olympus AU2700 automatic biochemical system were used to measure cardiac markers.Then real time-quantitative polymerase chain reaction was used to measureRORγt mRNA in 13 SLE patients with cardiac involvement,14 SLE patients without cardiac involvement and 13 healthy controls.Kruskal-Wallis test,Mann-Whitney U test,F test and Spearman correlation were used for statistical analysis.Results① Serum levels of IL-17A were markedly increased in group Ⅰ than group Ⅱ and Ⅲ [27.98 (8.44-138.81) vs 11.12 (3.64-22.30) vs 5.77 (2.22-9.60) pg/ml,both P＜0.05].② Serum levels of BNP were significantly higher in group Ⅰ than group Ⅱ and Ⅲ [49(13.50-107.50) vs 17(9-26) vs 7.50(4.75-13) pg/ml,both P＜0.01 ].③ Age,course,SLEDAI were significantly higher in group Ⅰ SLE patients than group Ⅱ (P＜0.01 or P＜0.05).④ The level of RORγt mRNA were significantly elevated in group Ⅰ compared to group Ⅱ and Ⅲ [2.2(0.79-2.83) vs 0.72(0.39-1.14) vs 0.19(0.15-0.75),P＜0.05].Conclusion① Th17 cells may contribute to the inflammation of heart in SLE.② The older age,longer course and higher disease activity of SLE patients are risk factors for cardiac involvement in SLE.③ Serum BNP may be a useful indicator in SLE patients with heart involvement.