The Journal of Practical Medicine >
Effects of wedelobata on apoptosis and secretion of inflammatory cytokines in the alveolar epithelium infected by Streptococcus pneumonia
Received date: 2023-04-24
Online published: 2024-02-22
Objective To investigate the regulatory effects of wedelobata on apoptosis and secretion of inflammatory factors in the alveolar epithelial cells infected by Streptococcus pneumoniae. Methods Alveolar epithelial cells A549 were divided into infection group (1 × 108 /CFU/mL cultured cells of Streptococcus pneumoniae), control group (no treatment), infection+wedelolactone low-dose group, middle-dose group and high-dose group (pretreated with wedelolactone at 10, 20 and 40 μmol/L and then cultured cells of Streptococcus pneumoniae at 1 × 108 /CFU/mL). Alveolar epithelial cells A549 were divided into infection group (1 × 108 /CFU/mL cultured cells of Streptococcus pneumoniae), control group (no treatment), infection+wedelolactone low-dose group, middle-dose group and high-dose group (pretreated with wedelolactone at 10, 20 and 40 μmol/L and then cultured cells of Streptococcus pneumoniae at 1 × 108 /CFU/mL). Results Compared with control group, the apoptosis rate, the relative expression levels of Bax, Caspase-3 protein, IL-6, IL-1β and TNF-α mRNA were higher in infection group, infection + wedelolide low dose group, medium dose group and high dose group, while the expression level of Bcl-2 protein was lower (P < 0.05). Compared with the infected group, the apoptosis rate, the relative expression levels of Bax, Caspase-3 protein, IL-6, IL-1β and TNF-α mRNA and the expression levels of Bcl-2 protein were lower in the infected + wedelolide low dose, medium dose and high dose groups. Moreover, the apoptosis rate, the expression levels of Bax, Caspase-3 protein, IL-6, IL-1β and TNF-α mRNA were the highest in the infected + wedelactone high-dose group, and the expression levels of Bcl-2 protein were the lowest (P < 0.05). Conclusion The apoptosis rate of alveolar epithelial cells infected by Streptococcus pneumoniae decreased and the secretion of inflammatory factors decreased after the intervention of wedelia lactone.
Lihong DING , Shijia GENG , Yujie WANG . Effects of wedelobata on apoptosis and secretion of inflammatory cytokines in the alveolar epithelium infected by Streptococcus pneumonia[J]. The Journal of Practical Medicine, 2024 , 40(3) : 316 -320 . DOI: 10.3969/j.issn.1006-5725.2024.03.006
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