用于检测GERD引起的肺损伤的非侵入性生物标志物
Andrés R Latorre-Rodríguez1,2, Sumeet K Mittal3,4, Ranjithkumar Ravichandran1
1Norton Thoracic Institute, St. Joseph's Hospital and Medical Center, 500 W Thomas Road, Phoenix, AZ, 85013, USA.
Surgical endoscopy
|September 12, 2024
概括
胃食道逆流可以通过增加细胞外囊中的自我抗体和自我抗原来引起肺部损伤. 这项对小鼠的研究表明,这些标记物在吸入后上升,这表明早期检测肺损伤的潜在生物标记物.
科学领域:
- 免疫学 免疫学 免疫学
- 肺部病理学 肺部病理学
- 胃肠病学 胃肠病学
背景情况:
- 胃食道逆流与逐渐的肺损伤有关.
- 一种新型的免疫机制涉及肺自身抗原 (SAgs),如原V (Col-V) 和K-alpha-1素 (Kα1T) 在细胞外囊泡 (EVs) 中触发自身抗体 (SAbs).
研究的目的:
- 为了调查SAbs和SAgs是否在肺移植接受者以外的吸入诱导肺损伤的动物模型中增加.
主要方法:
- 使用C57BL/6J小鼠建立了重复性肺吸气的小鼠模型.
- 给小鼠吸入盐酸,胃内含物或其组合,并抽取血液样本,在第90天进行牺牲以进行病理学评估.
- 自体抗体 (SAbs) 通过ELISA测量,小EV中的SAgs和NF-κB通过西布洛特评估.
主要成果:
- 吸血小鼠显示显著体重减轻和组织学肺损伤.
- 与多个时间点的对照组相比,在吸入的小鼠中观察到抗Col-V的度增加.
- 吸入小鼠的小EV具有更高的Col-V和NF-κB水平.
结论:
- 这项研究支持胃食道逆流在吸入引起的肺损伤中的作用.
- 升高的幽默标记物可以作为非侵入性生物标记物,用于检测胃食道逆流性疾病中无症状肺损伤.
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