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The effects of germacrone on lipopolysaccharide-induced acute lung injury in neonatal rats
Corresponding Author(s) : J-L. Zhang
zjuanlijl@163.com
Cellular and Molecular Biology,
Vol. 60 No. 4: Issues 4
Abstract
Germacrone is one of the main bioactive components in the traditional Chinese medicine Rhizoma curcuma and has been shown to possess an anti-inflammatory activity. Our present study aimed to investigate the protective effects of germacrone on lipopolysaccharide (LPS)-induced acute lung injury in neonatal rats. Results showed that germacrone treatment significantly decreased the expression of pro-inflammatory cytokines IL-6 and TNF-α. Meanwhile, the expression of anti-inflammatory mediators TGF-β1 and IL-10 was obviously increased following germacrone administration. The LPS-induced pathological changes in neonatal rats were also attenuated by germacrone treatment. In vitro, MTT and EdU incorporation assay indicated that germacrone administration significantly increased the A549 cell viabilities in a dose-dependent manner. Besides, flow cytometry and TUNEL analysis showed that the cell apoptosis rate was significantly reduced in a concentration-dependent manner after germacrone injection. At the molecular level, we found that germacrone treatment promoted the expression of claudin-4 both in vivo and in vitro as shown by real time PCR and western blot. Collectively, our study demonstrated that germacrone protected neonatal rats against LPS-induced ALI partially by modulation of claudin-4.
Keywords
Germacrone
acute lung injury
lipopolysaccharide
claudin-4.
An, J.-F., Sun, Y., Zhang, Q.-L., Zhang, F.-L., & Zhang, J.-L. (2014). The effects of germacrone on lipopolysaccharide-induced acute lung injury in neonatal rats. Cellular and Molecular Biology, 60(4), 8–12. Retrieved from https://mail.cellmolbiol.org/index.php/CMB/article/view/513
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