基于Nrf-2/HO-1信号通路探讨白芷苷对肾缺血再灌注损伤的保护作用及调控机制

Qixun Luo, Zunwei Zhu, Lisong Wan
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引用次数: 0

摘要

目的:探讨并验证白丹素(plbagin, PL)通过介导Nrf2/HO-1通路,减轻肾功能损害,对肾缺血再灌注损伤(ischemia-reperfusion injury, IRI)的保护作用,为plin在肾缺血再灌注损伤预防中的应用提供理论依据。方法:将24只健康成年雄性BALB/c小鼠随机分为4组:假手术组、IR模型组(IRI组)、IRI + PL 10 mg/kg组、IRI + PL 10 mg/kg + ML385 (30 mg/kg)组。四组小鼠在造模前2周给药,连续2周(每天1次),第14天给药1 h后开始造模。假手术组仅分离肾血管,不夹持缺血,其余组采用微创动脉夹持建立小鼠RIRI损伤模型。检测并分析各组小鼠血清肌酐(Scr)、血尿素氮(BUN)、白细胞介素-6 (IL-6)、髓过氧化物酶(MPO)、血清超氧化物歧化酶(SOD)、GSH-Px、丙二醛(MDA)及炎症水平;肾组织损伤病理检查;Western blotting检测Nrf-2、HO-1的表达。结果:与假手术组比较,IRI组Scr、BUN、IL-6、MDA、MPO水平升高,SOD、GSH-Px活性降低,肾损伤严重,nif -2/HO-1表达降低。病理和Western blotting证实,给药可减轻肾损伤,降低Scr、BUN、IL-6、MDA和MPO水平,升高SOD和GSH-Px水平,增加nif -2/HO-1表达。结论:PL可通过调节Nrf-2/HO-1信号通路,降低氧化应激水平和炎症因子的释放,改善小鼠缺血/再灌注肾损伤,具有保护肾的作用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Exploring the Protective Effect and Regulatory Mechanism of Plumbagin on Renal Ischemia-Reperfusion Injury Based on the Nrf-2/HO-1 Signaling Pathway.

Objective: To investigate and validate the protective role of plumbagin (PL) in renal ischemia-reperfusion injury (IRI) by mediating the Nrf2/HO-1 pathway and reducing renal function damage, thereby providing a theoretical basis for the application of PL in the prevention of renal IRI.

Methods: Twenty-four healthy adult male BALB/c mice were randomly divided into four groups: the sham group, the IR model group (IRI group), the IRI + PL 10 mg/kg group, and the IRI + PL 10 mg/kg + ML385 (30 mg/kg) group. Four groups of mice were given drugs 2 weeks before modeling, for 2 consecutive weeks (once a day), and the modeling was started 1 hour after the administration on the 14th day. In the sham operation group, only the renal vessels were isolated without clamping ischemia, and in the other groups, minimally invasive artery clamps were used to establish the mouse RIRI injury model. Serum creatinine (Scr), blood urea nitrogen (BUN), interleukin-6 (IL-6), myeloperoxidase (MPO), serum superoxide dismutase (SOD), GSH-Px, malondialdehyde (MDA), and inflammatory levels of mice in each group were detected and analyzed; pathological examination of renal tissue injury; and the expressions of Nrf-2 and HO-1 were detected by Western blotting.

Results: Compared with the sham group, the IRI group showed elevated Scr, BUN, IL-6, MDA, and MPO levels, reduced SOD and GSH-Px activities, severe renal injury, and decreased Nrf-2/HO-1 expression. PL administration reduced renal injury, decreased Scr, BUN, IL-6, MDA, and MPO levels, increased SOD and GSH-Px levels, and increased Nrf-2/HO-1 expression, as confirmed by pathology and Western blotting.

Conclusions: PL can reduce the level of oxidative stress and the release of inflammatory factors by regulating the Nrf-2/HO-1 signaling pathway, improve renal injury induced by ischemia/reperfusion in mice, and play a renoprotective role.

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