[CAS NO. 51333-22-3]  Budesonide

Budesonide effectively inhibits production of eotaxin and RANTES protein although Budesonide inhibits the expression of chemokine mRNA to a variable extent in the human bronchial epithelial cell line BEAS-2B and in primary human bronchial epithelial cells. Budesonide inhibits both RANTES- and eotaxin promoter-driven reporter gene activity in the human bronchial epithelial cell line BEAS-2B and in primary human bronchial epithelial cells. Budesonide also selectively accelerates the decay of eotaxin and MCP-4 mRNA in the human bronchial epithelial cell line BEAS-2B and in primary human bronchial epithelial cells. Budesonide time- and protein synthesis-dependently reduces VEGF secretion and VEGF mRNA expression in both cell types and these effects are inhibited by mifepristone (RU 486), a glucocorticoid receptor antagonist, suggesting that Budesonide reduces VEGF secretion and expression through its glucocorticoid receptor-mediated action. Budesonide causes a dose-dependent, almost total, inhibition of swine dust-induced IL-6 and IL-8 release from epithelial cells and LPS-induced IL-6 and TNF-alpha from alveolar macrophages.