CLC number: R845.2+1
On-line Access: 2020-08-04
Received: 2019-12-12
Revision Accepted: 2020-03-02
Crosschecked: 2020-07-10
Cited: 0
Clicked: 2693
Citations: Bibtex RefMan EndNote GB/T7714
Ke Ning, Zhen-biao Guan, Hong-tao Lu, Ning Zhang, Xue-jun Sun, Wen-wu Liu. Lung macrophages are involved in lung injury secondary to repetitive diving[J]. Journal of Zhejiang University Science B,in press.Frontiers of Information Technology & Electronic Engineering,in press.https://doi.org/10.1631/jzus.B1900687 @article{title="Lung macrophages are involved in lung injury secondary to repetitive diving", %0 Journal Article TY - JOUR
巨噬细胞参与反复潜水引起的肺损伤创新点:本研究首次在小鼠体内建立并评估减压诱导肺损伤(DILI)模型;首次探索巨噬细胞在DILI中的作用;首次探索呼吸HCH对于DILI的治疗作用. 方法:将雄性C57小鼠随机分为对照组、DILI组和HCH组.DILI组于600 kPa压力下暴露60 min,连续3 d.HCH组在减压处理后吸入HCH(66.7% H2+33.3% O2)干预.减压操作6 h后检测小鼠肺功能和小鼠肺干湿比,取小鼠肺组织固定进行苏木精-伊红染色,并取小鼠全血进行血细胞计数实验.取小鼠肺组织提取蛋白并提取血清,采用酶联免疫吸附测定(ELISA)检测炎症因子与趋化因子,并使用蛋白质免疫印迹(western blotting)试验测定小鼠肺内小鼠含生长因子样模体粘液样激素样受体(F4/80)、巨噬细胞甘露糖受体(CD206)和诱导型一氧化氮合酶(iNOS)的表达量.使用免疫组化检测小鼠肺组织切片内F4/80、CD206和iNOS的阳性细胞的比例.提取小鼠肺组织内总信使核糖核酸(mRNA),使用荧光实时定量聚合酶链反应测定极化标记蛋白CD206和iNOS以及炎症因子TNF-α和IL-10的基因表达量. 结论:多次减压可导致肺水肿、组织结构破坏和肺功能下降,病变程度和减压次数有关,证明模型建立成功.DILI可以诱导肺内和循环炎症反应的激活,巨噬细胞可能向肺内迁移趋化并向不同亚型极化,极化后的巨噬细胞M1与M2分别参与炎症激活与炎症抑制的过程.吸入HCH可以显著改善小鼠肺损伤,降低肺内炎症反应,抑制巨噬细胞向M1亚型极化并促进其向M2亚型极化,从而证明吸入HCH对于DILI具有治疗作用. 关键词组: Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article
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