摘要
背景:巨噬细胞迁移抑制因子 (MIF) 是一种多能细胞因子,有助于化学性肝损伤的炎症反应。这种细胞因子根据肝病的病因和阶段表现出促炎和抗炎作用。 目的:我们的研究旨在研究 MIF 在氧化应激和肝脏炎症中的作用,以及甜菜碱对硫代乙酰胺 (TAA) 诱导的小鼠慢性肝损伤中 MIF 的调节作用。 方法:实验在野生型和敲除型 MIF-/- C57BL/6 小鼠上进行。它们被分为以下几组:对照;接受甜菜碱的 Bet 组(溶于饮用水中的 2% wt/v); MIF-/-小鼠组; MIF-/-+投注;接受 TAA (200 mg/kg b.w.),腹膜内,3x/周/8 周的 TAA 组; TAA+投注; MIF-/-+TAA 和 MIF-/-+TAA+Bet。在 TAA 和 Bet 治疗组中,动物接受相同的剂量。治疗八周后,采集血样进行生化分析,并制备肝脏标本用于评估氧化应激和炎症参数。 结果:在 MIF-/-小鼠中,TAA 降低转氨酶、γ-谷氨酰转肽酶、胆红素、丙二醛 (MDA)、氧化蛋白产物 (AOPP)、总氧化状态 (TOS)、C 反应蛋白 (CRP)、IL-6、 IFN-γ,以及增加的硫醇和总抗氧化状态 (TAS)。甜菜碱减弱了 MIF 的机制和 TAA 诱导的肝损伤中的介导作用,降低了转氨酶、γ-谷氨酰转肽酶、胆红素、MDA、AOPP、TOS、CRP、IL-6、IFN-g 和增加硫醇。结论:MIF 是 TAA 诱导的肝损伤的肝毒性、促氧化和促炎作用的介质。 MIF 靶向治疗可以潜在地减轻肝脏中的氧化应激和炎症,但其作用的确切机制需要进一步研究。甜菜碱可增强抗氧化防御并减弱 MIF 的肝毒性作用,表明甜菜碱可用于预防和治疗肝损伤。
关键词: 硫代乙酰胺、肝损伤、炎症、巨噬细胞迁移抑制因子、甜菜碱、小鼠。
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