在慢性阻塞性肺病 (COPD) 鼠标模型中,颗粒物暴露对不同病原型的影响和区别
Jung Hur1, Chin Kook Rhee1, Hyoung Kyu Yoon2
1Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, College of Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, South Korea.
Journal of inflammation (London, England)
|November 2, 2024
概括
在慢性阻塞性肺病 (COPD) 模型中,暴露于颗粒物 (PM) 会加剧肺炎和肺气. 喘-COPD重叠 (ACO) 模型显示,对PM诱导的细胞损伤和氧化应激的脆弱性增加.
科学领域:
- 环境健康 环境健康
- 肺部医学 肺部医学
- 毒理学 毒理学 毒理学
背景情况:
- 颗粒物 (PM) 显著影响慢性阻塞性肺病 (COPD).
- 喘-COPD重叠 (ACO),COPD病变型,与严重程度的增加有关,但PM的影响尚不清楚.
- 这项研究调查了PM对COPD动物模型的影响.
研究的目的:
- 评估颗粒物暴露对不同慢性阻塞性肺病 (COPD) 病原型的影响.
- 评估PM对喘性COPD (COPD-A) 和吸烟相关的COPD (COPD-C) 模型的影响.
- 为了阐明PM诱导的细胞损伤和COPD的炎症反应.
主要方法:
- 已建立的COPD-C和COPD-A模型使用猪胰腺弹性酶 (PPE) 和卵蛋白.
- 服用香烟吸烟提取物来模仿吸烟的影响.
- 分析了支气管支气管洗液 (BALF),细胞因子,肺组织学和细胞损伤.
主要成果:
- 不管PM,COPD-A模型在BALF中显示细胞计数和2型细胞因子增加,不管PM.
- 所有模型都显示PM暴露后肺炎和肺气的增加.
- 在COPD-A模型中,PM暴露增加了与亡相关的蛋白Bax,降低了Nrf-2和增加了ROS.
结论:
- 开发了COPD病原型的独特动物模型.
- 甲型COPD模型显示对PM诱导的细胞损伤的脆弱性增加.
- 即使在对照组中,暴露在PM中也会加剧气道炎症和肺气,突出显示呼吸系统疾病的风险.
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