中国组织工程研究 ›› 2022, Vol. 26 ›› Issue (23): 3657-3663.doi: 10.12307/2022.664

• 组织构建实验造模 experimental modeling in tissue construction • 上一篇    下一篇

沙丁胺醇减轻大鼠的高氧性急性肺损伤

梅  鸿,覃  松,李  康,陈  淼   

  1. 遵义医科大学附属医院重症医学科二病区,贵州省遵义市  563000
  • 收稿日期:2021-04-10 接受日期:2021-05-27 出版日期:2022-08-18 发布日期:2022-02-15
  • 通讯作者: 陈淼,硕士,主任医师,遵义医科大学附属医院重症医学科二病区,贵州省遵义市 563000
  • 作者简介:梅鸿,男,2014年遵义医学院毕业,硕士,副主任医师,主要从事急性肺损伤的保护研究。
  • 基金资助:
    遵义医学院附属医院基金[ 院字(2015)32],项目负责人:梅鸿;国家自然科学基金(81960362),项目负责人:覃松

Salbutamol attenuates hyperoxia-induced acute lung injury in rats

Mei Hong, Qin Song, Li Kang, Chen Miao   

  1. Second Department of Critical Care Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi 563000, Guizhou Province, China
  • Received:2021-04-10 Accepted:2021-05-27 Online:2022-08-18 Published:2022-02-15
  • Contact: Chen Miao, Master, Chief physician, Second Department of Critical Care Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi 563000, Guizhou Province, China
  • About author:Mei Hong, Master, Associate chief physician, Second Department of Critical Care Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi 563000, Guizhou Province, China
  • Supported by:
    the Foundation of the Affiliated Hospital of Zunyi Medical University, No. (2015)32 (to MH); the National Natural Science Foundation of China, No. 81960362 (to QS)

摘要:

文题释义:
核因子E2相关因子2(Nuclear factor-erythroid 2-related factor 2,Nrf2):是调控细胞氧化应激反应的重要转录因子,同时也是维持细胞内氧化还原稳态的中枢调节者。Nrf2通过诱导调控一系列抗氧化蛋白的组成型和诱导型表达,可以减轻活性氧和亲电体引起的细胞损伤,使细胞处于稳定状态,维持机体氧化还原动态平衡。
细胞间黏附分子1(intercellular cell adhesion molecule-1,ICAM-1):又叫做CD54,属于黏附分子中免疫球蛋白超家族中的成员,是介导黏附反应的一个重要黏附分子。ICAM-1 在静息的血管内皮细胞上呈低水平表达,通过与血管内皮细胞表面上的特异性受体结合而发挥其生物学活性。

背景:临床上高氧导致的高氧性急性肺损伤越来越受到人们的关注。研究显示,沙丁胺醇能够减轻大鼠的炎性反应,提高多种抗氧化物质的活性,改善微循环,从而减轻肺水肿的程度,对肺组织起到一定的保护作用。
目的:探究沙丁胺醇减轻高氧性急性肺损伤的效果及其作用机制。 
方法:将SD大鼠分为对照组、不同时间高氧处理肺损伤模型组和不同剂量沙丁胺醇雾化给药治疗组(0.025,0.05,0.1,0.2,0.4 mg/kg)。通过测定各项生化指标确定最佳的高氧(> 95%)处理时间和沙丁胺醇使用剂量;随后分别用qRT-PCR、Western-blot和苏木精-伊红染色法测定给予最佳沙丁胺醇剂量时肺损伤模型组大鼠肺组织JNK/PI3K/Akt/NF-κB/ICAM-1信号通路中mRNA和蛋白的表达以及肺脏组织的病理变化。 
结果与结论:①实验成功构建了高氧性急性肺损伤模型,且60 h时模型效果最佳;②最优的沙丁胺醇使用剂量为0.2 mg/kg;模型组与对照组相比,各项生化指标均出现极显著的升高或降低(P < 0.05)、肺损伤模型组JNK/PI3K/Akt/NF-κB/ICAM-1信号通路相关因子(JNK,PI3K,Akt,核因子E2相关因子2,核因子κB,细胞间黏附分子1,白细胞介素8,肿瘤坏死因子)mRNA和蛋白表达水平均明显上调(P < 0.05),沙丁胺醇治疗组则明显回归(P < 0.05);③肺损伤模型组表现出严重的病理损伤和炎性因子浸润,沙丁胺醇可有效缓解肺损伤模型组的变化;④结果说明,沙丁胺醇可通过JNK/PI3K/Akt/NF-κB/ICAM-1信号通路来减轻高氧性急性肺损伤大鼠的肺损伤程度。

https://orcid.org/0000-0001-6214-0656 (梅鸿) 

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松;组织工程

关键词: 沙丁胺醇, 改善, 高氧性急性肺损伤, 信号通路, 机制

Abstract: BACKGROUND: Hyperoxia-induced acute lung injury has attracted more and more attention in clinical practice. Studies have shown that salbutamol can reduce inflammation in rats and improve the activity of various antioxidants and microcirculation, thereby reducing pulmonary edema, and exerting a protective role in lung tissue. 
OBJECTIVE: To investigate the effect of salbutamol on relieving hyperoxia-induced acute lung injury and its mechanism. 
METHODS: Sprague-Dawley rats were divided into a control group, a model group in which lung injury model was prepared with high concentration oxygen at different time, and a treatment group given different dosages of salbutamol by gavage (0.025, 0.05, 0.1, 0.2, 0.4 mg/kg). The optimal high concentration oxygen (> 95%) treatment time and dosage of salbutamol were determined by measuring various biochemical indicators. Real-time quantitative PCR, western blot, and hematoxylin-eosin staining were then used to determine the mRNA and protein expressions in JNK/PI3K/Akt/NF-κB/ICAM-1 signaling pathway and the pathological changes of lung tissue in the model rats with lung injury given the optimal dose of salbutamol. 
RESULTS AND CONCLUSION: The hyperoxia-induced acute lung injury model was successfully constructed and showed the best quality when treated with high concentration oxygen at 60 hours. The optimal dosage of salbutamol was 0.2 mg/kg. Compared with the control group, the biochemical indicators showed a significant increase or decrease in the model group (P < 0.05). The mRNA and protein expression levels of JNK/PI3K/Akt/NF-κB/ICAM-1 signaling pathway-related factors (JNK, PI3K, Akt, nuclear factor E2 related factor 2, nuclear factor κB, intercellular adhesion molecule 1, interleukin 8, tumor necrosis factor) were significantly up-regulated in the model group compared with the control group (P < 0.05). A significant regression was observed after treatment with salbutamol (P < 0.05). Besides, the model group showed severe pathological damage and inflammatory infiltration, and salbutamol could effectively alleviate these changes in the model group. To conclude, salbutamol can significantly improve the lung injury in rats with hypoxia-induced acute lung injury through JNK/PI3K/Akt/NF-κB/ICAM-1 signaling pathways.

Key words: salbutamol, improvement, hyperoxia-induced acute lung injury, signal pathway, mechanism

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