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A Novel Exposure System for the Efficient and Controlled Deposition of Aerosol Particles onto Cell Cultures

机译:一种新型的曝光系统,用于将气溶胶颗粒有效且有控制地沉积到细胞培养物中

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摘要

Epidemiologic studies have shown correlations between morbidity and particles ≤2.5μm generated from pollution processes and manufactured nanoparticles. Thereby nanoparticles seem to play a specific role. The interaction of particles with the lung, the main pathway of undesired particle uptake, is poorly understood. In most studies investigating these interactions in vitro, particle deposition differs greatly from the in vivo situation, causing controversial results. We present a nanoparticle deposition chamber to expose lung cells mimicking closely the particle deposition conditions in the lung. Inthis new deposition chamber, particles are deposited very efficiently, reproducibly, and uniformly onto the cell culture, a key aspect if cell responses are quantified in respect to the deposited particle number. In situ analyses of the lung cells, e.g., the ciliary beat frequency, indicative of the defense capability of the cells, are complemented by off-line biochemical, physiological, and morphological cell analyses.
机译:流行病学研究表明,发病率与污染过程和人造纳米颗粒产生的≤2.5μm颗粒之间存在相关性。因此,纳米颗粒似乎起特定作用。人们不了解颗粒与肺的相互作用,这是不希望的颗粒吸收的主要途径。在大多数研究这些相互作用的体外研究中,颗粒沉积与体内情况大不相同,导致有争议的结果。我们提出了一个纳米粒子沉积室,以暴露与肺中的粒子沉积条件密切相似的肺细胞。在这个新的沉积室中,颗粒可以非常有效,可重复且均匀地沉积在细胞培养物中,这是关键的方面,如果细胞响应相对于沉积的颗粒数得以量化。离线的生化,生理和形态学细胞分析可以补充肺细胞的原位分析,例如表明细胞防御能力的纤毛搏动频率。

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