长春西汀减轻大鼠肠缺血/再灌注损伤并增强 M2 巨噬细胞极化:SIRT1/SOCS3/STAT3 信号通路的作用。
Vinpocetine alleviates intestinal ischemia/reperfusion injury and enhances M2 macrophage polarization in rats: Role of SIRT1/SOCS3/STAT3 signaling pathway.
机构信息
Clinical Pharmacology Department, Faculty of Medicine, Zagazig University, Egypt.
Clinical Pharmacology Department, Faculty of Medicine, Zagazig University, Egypt.
出版信息
Int Immunopharmacol. 2023 Sep;122:110654. doi: 10.1016/j.intimp.2023.110654. Epub 2023 Jul 18.
Vinpocetine (Vinpo) is a neuroprotective vasodilator drug. It is an effective therapeutic agent for a variety of cerebrovascular and cognitive disorders. However, its potential protective efficacy on intestinal ischemia/reperfusion (I/R) injury remains elusive. The present study aimed to investigate the effect of Vinpo on intestinal I/R injury and to explore its modulatory effect on sirtuin (SIRT1)/ Suppressor of cytokine signaling (SOCS3)/ Signal Transducer and Activator of Transcription (STAT3) signaling. Twenty-four male Wistar albino rats were randomly allocated into four groups. G1 (sham): rats were subjected to surgical stress without I/R, GII (I/R): rats were subjected to 60 min/2-h I/R, GIII (Vinpo + I/R): rats were pre-treated with Vinpo (20 mg/kg/day, P.O. daily) for 2 weeks before intestinal I/R; GIV (EX527 + Vinpo + I/R): rats received both Vinpo (20 mg/kg/day, P.O.) and EX527 (5 mg/kg, once every 2 days, i.p) for 2 weeks before intestinal I/R. The current results showed that Vinpo improved the intestinal histopathological picture, enhanced M1 to M2 macrophage polarization and alleviated the I/R-induced increase in interleukins (IL-6, IL-1β), tumor necrosis factor (TNF-α), inducible nitric oxide synthase (i-NOS), and nitric oxide (NO). Additionally, Vinpo pretreatment upregulated SIRT1 mRNA expression/protein level and SOCS3 mRNA expression while downregulating P-STAT3 immunoreactivity. The effects of Vinpo were attenuated by the SIRT1 inhibitor EX527. We concluded that Vinpo ameliorated the intestinal I/R injury and enhanced M2 anti-inflammatory macrophage polarization through modulation of SIRT1/SOCS3/STAT3/i-NOS cascade.
长春西汀(Vinpo)是一种神经保护血管扩张药。它是治疗多种脑血管和认知障碍的有效治疗剂。然而,其对肠缺血/再灌注(I/R)损伤的潜在保护作用仍不清楚。本研究旨在探讨长春西汀对肠 I/R 损伤的影响,并探讨其对沉默信息调节因子 1(SIRT1)/细胞因子信号转导抑制因子 3(SOCS3)/信号转导及转录激活因子 3(STAT3)信号的调节作用。24 只雄性 Wistar 白化大鼠随机分为 4 组。G1(假手术):大鼠仅接受手术应激而不进行 I/R;G2(I/R):大鼠接受 60min/2h I/R;G3(长春西汀+I/R):大鼠在肠 I/R 前 2 周每天口服长春西汀(20mg/kg);G4(EX527+长春西汀+I/R):大鼠在肠 I/R 前 2 周每天口服长春西汀(20mg/kg)和腹腔注射 EX527(5mg/kg,每 2 天 1 次)。目前的结果表明,长春西汀改善了肠组织学图片,增强了 M1 到 M2 巨噬细胞极化,并减轻了 I/R 引起的白细胞介素(IL-6、IL-1β)、肿瘤坏死因子(TNF-α)、诱导型一氧化氮合酶(iNOS)和一氧化氮(NO)的增加。此外,长春西汀预处理上调 SIRT1 mRNA 表达/蛋白水平和 SOCS3 mRNA 表达,同时下调 P-STAT3 免疫反应性。SIRT1 抑制剂 EX527 减弱了长春西汀的作用。我们得出结论,长春西汀通过调节 SIRT1/SOCS3/STAT3/iNOS 级联反应,改善了肠 I/R 损伤,并增强了 M2 抗炎性巨噬细胞极化。