Aryl Hydrocarbon Receptor Pathway Augments Peritoneal Fibrosis in a Murine CKD Model Exposed to Peritoneal Dialysate.
Saran Lotfollahzadeh, Aniket Vazirani, Isaac E Sellinger, Janelle Clovie, Isaac Hoekstra, Arjun Patel, Abbas Brahim Malloum, Wenqing Yin, Herreet Paul, Pranav Yadati, Jeffrey Siracus, Marina Malikova, Luise I Pernar, Jean Francis, Lauren Stern, Vipul C Chitalia
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引用次数: 0
芳基烃受体通路促进暴露于腹膜透析液的小鼠慢性肾脏病模型的腹膜纤维化
背景:慢性肾脏病(CKD)是一种促炎症和促纤维化的疾病,可独立改变腹膜结构。腹膜透析(PD)会导致腹膜发生深刻变化。方法:在此,我们发现人类慢性肾功能衰竭会诱导腹膜增厚、纤维化和胶原沉积,并激活腹膜下血管中的芳香烃受体途径(AHR)。利用一种新型的 CKD 小鼠腹膜透析模型,我们证实了这些由 CKD 引起的腹膜变化,这些变化在暴露于腹膜透析液时会加剧。腹膜透析液进一步增强了 CKD 小鼠腹膜微血管内皮细胞的 AHR 活性:结果:用腹膜透析液中的 AHR 抑制剂治疗 CKD 小鼠两周后,腹膜下毛细血管内皮细胞中的 AHR 表达量减少了 7 倍,腹膜下间隙减少了 5 倍,纤维化和胶原沉积比用药物治疗的 CKD 小鼠减少了 9 倍。抑制 AHR 可减少炎症、腹膜下新生血管面积及其下游靶点组织因子。AHR抑制剂可使CKD小鼠腹膜透析液诱导的促炎症和促坏死细胞因子(如IL-6、MCP1和MIP1水平)恢复正常:本研究揭示了人和小鼠腹膜下血管内皮细胞中 AHR-细胞因子轴的激活,这很可能使腹膜膜受到腹膜透析液介导的改变的影响。这项研究支持进一步探索将 AHR 作为潜在的治疗靶点,以保护腹膜透析过程中腹膜结构和功能的完整性。
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