Airborne fine particle decreases the cell viability and induces inflammation in human bronchial epithelial cells / 中南大学学报(医学版)
Journal of Central South University(Medical Sciences)
;
(12): 1042-1047, 2017.
Artigo
em Chinês
| WPRIM
| ID: wpr-669344
ABSTRACT
Objective:
To investigate the effects of airborne fine particle on cell viability and inflammation in human bronchial epithelial cells.Methods:
Atmospheric PM2.5 samples were collected by PM2.5 sampler.PM2.5 morphology was observed by scanning electron microscope (SEM).Human bronchial epithelial cells (BEAS-2B) were treated with PM2.5 at different concentrations (0,50,100,200,400,800 μg/mL) for 12,24 or 48 hours,and the cell activity were evaluated by cell counting kit-8 (CCK-8).The mRNA expression levels of (granulocyte-macrophage colony stimulating factor,GM-CSF) and TNF-α were detected by quantitative real-time PCR (qRT-PCR).Western blot was used to detect the protein expressions of GM-CSF and TNF-α.Results:
According to SEM,the shape of PM2.5 varied,and the diameter was different and mostly equal to or less than 2.5 μm.CCK-8 assay showed that different concentrations of PM2.5 exposure for 12 hours,24 hours and 48 hours resulted in loss of cell viability of BEAS-2B cells (P<0.05).Different concentrations of PM2.5 increased the mRNA and protein expression of GM-CSF and TNF-α,and the higher concentration of PM2.5 induced higher expression,which have statistical significant difference between the groups (P<0.05).Conclusion:
Atmospheric PM2.5 can cause inflammatory response in human bronchial epithelial cells.They can reduce cell viability,which may be related to the PM2.5 trigger and aggravation of bronchopulmonary inflammatory diseases.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Idioma:
Chinês
Revista:
Journal of Central South University(Medical Sciences)
Ano de publicação:
2017
Tipo de documento:
Artigo
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