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髓氧化酶通过改变周围血管脂肪细胞的分泌物和肥胖症的表型来影响血管功能

Alexander Hof¹, Max Landerer¹, Philipp Peitsmeyer²

¹Heart Center, Department of Cardiology, Faculty of Medicine and University Hospital Cologne, University of Cologne, 50937 Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), University of Cologne, 50937 Cologne, Germany.

Cell reports. Medicine

|April 19, 2025

概括

骨髓氧化酶 (MPO) 在肥胖中驱动炎症和内皮功能障碍. 缺乏MPO可以通过减少免疫细胞和增加有益的脂肪色来改善血管健康,这突出了MPO作为心血管疾病的治疗点.

科学领域:

心血管科学心血管科学
代谢性疾病研究研究
脂肪组织生物学脂肪组织生物学

背景情况:

肥胖是心血管疾病的主要原因,导致内皮功能障碍和炎症.
周血管脂肪组织 (PVAT) 在调节血管功能方面发挥着至关重要的作用.
免疫细胞的透,特别是释放髓氧化酶 (MPO) 的髓细胞,是肥胖患者PVAT的特征.

研究的目的:

研究MPO在与肥胖相关的心血管功能障碍中的作用.
确定MPO缺乏对PVAT炎症和血管健康的影响.
阐明MPO影响脂肪细胞功能和炎症的机制.

主要方法:

在肥胖患者和小鼠中,MPO水平与体重和内皮功能之间的相关性分析.
在MPO缺乏的小鼠中评估免疫细胞频率,PVAT波动和氧气消耗.
在肥胖的Mpo-/-小鼠中测量尼托铁素的形成和炎症性细胞因子的释放.
在体外研究中,使用MPO治疗的人类白色脂肪细胞来评估adiponectin和炎症标志物表达.

主要成果:

在肥胖人群中,MPO水平与体重正相关,与内皮功能负相关.
缺少MPO导致免疫细胞在PVAT中的透减少,PVAT增强,并增加了体内氧气消耗.
肥胖的Mpo-/-小鼠表现出减弱的尼托铁素形成和炎症性细胞因子释放.
在实验室中,MPO抑制了皮蛋白和棕色脂肪细胞标记物,同时促进了白色脂肪细胞的炎症.

结论:

在肥胖症中,MPO通过促进PVAT炎症和抑制adiponectin等血管保护媒介来促进血管功能障碍.
缺少MPO可以改善与肥胖相关的血管病理.
针对MPO是一种潜在的治疗策略,可以缓解与肥胖相关的心血管并发症.

关键词:

没有任何的Adiponectin.脑内皮的内皮功能.这是一种炎症炎症炎症炎症.骨髓氧化酶是如何形成的肥胖肥胖肥胖肥胖肥胖肥胖肥胖肥胖周围的周周脂肪组织组织.

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