Alveolar macrophages from EVALI patients and e-cigarette users: a story of shifting phenotype.

Alveolar macrophages from EVALI patients and e-cigarette users: a story of shifting phenotype.
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DOI:
10.1186/s12931-023-02455-w
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发表时间:
2023-06-17
影响因子:
5.8
通讯作者:
--
中科院分区:
医学2区
文献类型:
--
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暴露在电子烟蒸气中会改变重要的生物过程,包括吞噬作用、脂肪代谢以及呼吸道和肺泡腔中的细胞因子活动。人们对健康人群从正常使用电子烟转变为电子烟或蒸发产品相关肺损伤(EVALI)的生物机制知之甚少。我们比较了患有EVALI的人、没有呼吸道疾病的电子烟使用者和健康对照组的支气管肺泡灌洗液中的细胞种群和炎症免疫种群,发现患有EVALI的电子烟使用者表现出中性粒细胞炎症,肺泡巨噬细胞偏向炎症(M1)表型和细胞因子谱。相比之下,没有EVALI的电子烟使用者表现出较低的炎性细胞因子产生,并表现出与修复性(M2)表型相关的特征。这些数据表明,患有EVALI的电子烟使用者正在发生巨噬细胞特异性的变化。
Exposure to e-cigarette vapors alters important biologic processes including phagocytosis, lipid metabolism, and cytokine activity in the airways and alveolar spaces. Little is known about the biologic mechanisms underpinning the conversion to e-cigarette, or vaping, product use-associated lung injury (EVALI) from normal e-cigarette use in otherwise healthy individuals. We compared cell populations and inflammatory immune populations from bronchoalveolar lavage fluid in individuals with EVALI to e-cigarette users without respiratory disease and healthy controls and found that e-cigarette users with EVALI demonstrate a neutrophilic inflammation with alveolar macrophages skewed towards inflammatory (M1) phenotype and cytokine profile. Comparatively, e-cigarette users without EVALI demonstrate lower inflammatory cytokine production and express features associated with a reparative (M2) phenotype. These data indicate macrophage-specific changes are occurring in e-cigarette users who develop EVALI.
支气管肺泡灌洗(BAL)用于研究;获得足够的样品产量。
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