title: Inhibitory effects of budesonide, desloratadine and dexamethasone on cytokine release from human mast cell line (HMC-1).
abstract: OBJECTIVE
  To determine the inhibitory potency of budesonide on interleukin (IL)-4, 6 and 8, GM-CSF and TNF-alpha release from the human mast cell line (HMC-1) in comparison with the systemic glucocorticosteroid, dexamethasone, and H(1) antagonist, desloratadine.
  
  
  METHODS
  HMC-1 was stimulated with 25 ng/ml phorbol 12- myristate 13-acetate (PMA) and 2.5 x 10(-7) M ionomycin (A23187) for 6, 12 and 24 h in both the presence and absence of 10(-6)-10(-10) M concentrations of the test drugs. Culture supernatants were collected and assayed by ELISAs.
  
  
  RESULTS
  HMC-1 produced substantial amounts of GM-CSF and IL-8 and smaller amounts of TNF-alpha, IL-4 and IL-6 after being stimulated with PMA together with A23187. Budesonide and dexamethasone had potent inhibitory effects and desloratadine had modest inhibitory effects on the release of these cytokines. Budesonide was more potent than dexamethasone at most concentrations and time points. IL-4 was the cytokine which was most susceptible to inhibition by the three tested drugs. The inhibitory effects, in some cases, were time- and concentration-dependent.
  
  
  CONCLUSIONS
  Budesonide had a potent inhibitory effect on cytokine release from HMC-1. Its potency was greater than that of both dexamethasone and desloratadine.
authors.affiliation: The Institute of Chinese Medicine, Chinese University of Hong Kong, Shatin, NT, Hong Kong, SAR, China.
authors.forename: Y
authors.initials: Y
authors.lastname: Zhao
authors.forename: P C
authors.initials: PC
authors.lastname: Leung
authors.forename: K S
authors.initials: KS
authors.lastname: Woo
authors.forename: G G
authors.initials: GG
authors.lastname: Chen
authors.forename: Y O
authors.initials: YO
authors.lastname: Wong
authors.forename: S X
authors.initials: SX
authors.lastname: Liu
authors.forename: C A
authors.initials: CA
authors.lastname: van Hasselt
mesh_terms: D019819:Budesonide / Q000494:pharmacology*; D002460:Cell Line; D016207:Cytokines / Q000378:metabolism*; D003907:Dexamethasone / Q000494:pharmacology*; D006801:Humans; D017336:Loratadine / Q000031:analogs & derivatives* / Q000494:pharmacology*; D008407:Mast Cells / Q000187:drug effects* / Q000378:metabolism*; D013755:Tetradecanoylphorbol Acetate / Q000031:analogs & derivatives* / Q000494:pharmacology
chemical_list: D016207:Cytokines; D019819:Budesonide; C016658:phorbolol myristate acetate; D017336:Loratadine; D003907:Dexamethasone; C121345:desloratadine; D013755:Tetradecanoylphorbol Acetate