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Anti-inflammatory HDL effects are impaired in atrial fibrillation
Heart and Vessels ( IF 1.4 ) Pub Date : 2021-08-30 , DOI: 10.1007/s00380-021-01908-w
Erik Holzwirth 1 , Tina Fischer-Schaepmann 1 , Danilo Obradovic 1 , Mirjam von Lucadou 2, 3 , Edzard Schwedhelm 2, 3 , Günter Daum 3, 4 , Gerhard Hindricks 5 , Gunther Marsche 6 , Markus Trieb 6 , Holger Thiele 1 , Jelena Kornej 7 , Petra Büttner 1
Affiliation  

High-density lipoprotein (HDL), best known for cholesterol transport, also has anti-inflammatory effects. Previous studies suggest involvement of myeloperoxidase (MPO) in modification of HDL. HDL bound Sphingosine-1-phosphate (S1P) has been implied to be an essential protein regarding beneficial HDL effects. In this study, we analyzed anti-inflammatory HDL properties in patients with atrial fibrillation (AF), a disease involving atrial inflammation, compared to non-AF controls and whether anti-inflammatory properties improve upon catheter ablation. Additionally, association with serum concentrations of MPO and S1P were assessed. We isolated HDL from 25 AF patients, 13 non-AF individuals and 14 AF patients at follow-up (FU) after catheter ablation. S1P was measured in a cohort of 141 AF and 21 FU patients. Following preincubation with HDL from either group, bovine aortic endothelial cells were stimulated using tumor necrosis factor α and expression of pro-inflammatory genes intercellular adhesion molecule 1 (ICAM1), vascular cell adhesion molecule 1 (VCAM1), E-selectin (SELE) and P-selectin (SELP) was assessed using qPCR. Concentrations of circulating protein of these genes as well as MPO and S1P were measured in serum samples. Compared to non-AF individuals HDL from AF patients suppressed gene expression of the pro-inflammatory adhesion molecules ICAM1, VCAM1, SELE and SELP 27%, 18%, 21% and 57% less, respectively (p < 0.05 for all except SELE p = 0.06). In FU patients, the anti-inflammatory HDL activity was improved (suppression of ICAM1 + 22%, VCAM1 + 10%, SELE + 38% and SELP + 75%, p < 0.05 for all except VCAM1 p = 0.08). AF patients using angiotensin converting enzyme inhibitors or angiotensin receptor blockers had better anti-inflammatory HDL properties than non-users (gene expression suppression at least 28% more, p < 0.05 for all except ICAM1 p = 0.051). Circulating protein concentrations were not correlated with in vitro gene-expression, but circulating P-selectin was generally elevated in AF and FU patients compared to non-AF patients. MPO plasma concentration was positively associated with gene-expression of ICAM1, VCAM1 and SELP (r2 > 0.4, p < 0.05). Serum concentrations of S1P were increased in FU patients {1.201 µM [1.077–1.543]} compared to AF patients {0.953 µM [0.807–1.135], p < 0.01} but not correlated with ICAM1, VCAM1 and SELP gene expression. We conclude that the anti-inflammatory activity of HDL is impaired in AF patients, which might promote AF progression and AF-associated complications.



中文翻译:

抗炎 HDL 作用在心房颤动中受损

以胆固醇运输而闻名的高密度脂蛋白 (HDL) 也具有抗炎作用。以前的研究表明髓过氧化物酶 (MPO) 参与了 HDL 的修饰。HDL 结合的 1-磷酸鞘氨醇 (S1P) 已被暗示是关于有益 HDL 作用的必需蛋白质。在这项研究中,我们分析了心房颤动 (AF) 患者的抗炎 HDL 特性,房颤是一种涉及心房炎症的疾病,与非 AF 对照组相比,以及抗炎特性是否在导管消融后得到改善。此外,还评估了与血清 MPO 和 S1P 浓度的关联。我们在导管消融后的随访 (FU) 中从 25 名 AF 患者、13 名非 AF 患者和 14 名 AF 患者中分离出 HDL。在 141 名 AF 和 21 名 FU 患者的队列中测量 S1P。在与任一组的 HDL 预孵育后,使用肿瘤坏死因子 α 刺激牛主动脉内皮细胞并表达促炎基因细胞间粘附分子 1 (ICAM1)、血管细胞粘附分子 1 (VCAM1)、E-选择素 (SELE) 和使用 qPCR 评估 P-选择素 (SELP)。在血清样品中测量了这些基因的循环蛋白以及 MPO 和 S1P 的浓度。与非 AF 个体相比,来自 AF 患者的 HDL 抑制促炎粘附分子 ICAM1、VCAM1、SELE 和 SELP 的基因表达分别降低 27%、18%、21% 和 57%。使用 qPCR 评估 E-选择素 (SELE) 和 P-选择素 (SELP)。在血清样品中测量了这些基因的循环蛋白以及 MPO 和 S1P 的浓度。与非 AF 个体相比,来自 AF 患者的 HDL 抑制促炎粘附分子 ICAM1、VCAM1、SELE 和 SELP 的基因表达分别降低 27%、18%、21% 和 57%。使用 qPCR 评估 E-选择素 (SELE) 和 P-选择素 (SELP)。在血清样品中测量了这些基因的循环蛋白以及 MPO 和 S1P 的浓度。与非 AF 个体相比,来自 AF 患者的 HDL 抑制促炎粘附分子 ICAM1、VCAM1、SELE 和 SELP 的基因表达分别降低 27%、18%、21% 和 57%。 除 SELE p  = 0.06外,所有的p < 0.05)。在 FU 患者中,抗炎 HDL 活性得到改善(ICAM1 + 22%、VCAM1 + 10%、SELE + 38% 和 SELP + 75% 的抑制, 除 VCAM1 p  = 0.08外,所有患者的p < 0.05)。使用血管紧张素转换酶抑制剂或血管紧张素受体阻滞剂的 AF 患者比非使用者具有更好的抗炎 HDL 特性(基因表达抑制至少多 28%, 除 ICAM1 外的所有患者p < 0.05 p = 0.051)。循环蛋白浓度与体外基因表达无关,但与非 AF 患者相比,AF 和 FU 患者的循环 P-选择素普遍升高。MPO血浆浓度与ICAM1、VCAM1和SELP基因表达呈正相关(r 2  > 0.4,p  < 0.05)。与 AF 患者 {0.953 µM [0.807–1.135], p < 0.01}相比,FU 患者的血清 S1P 浓度增加 {1.201 µM [1.077–1.543]}, 但与 ICAM1、VCAM1 和 SELP 基因表达无关。我们得出结论,HDL 的抗炎活性在 AF 患者中受损,这可能促进 AF 进展和 AF 相关并发症。

更新日期:2021-08-30
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