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Chinese Journal of Clinical Pharmacology and Therapeutics ›› 2003, Vol. 8 ›› Issue (6): 642-644.

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Inhibition of dexamethasone on degranulation of mast cells and its mechanism

YUANLI, GUO Wei1, LIU Shui-Ping1   

  1. Department of Biochemistry and Molecular Biology,Nanjing Medical University,Nanjing 210029,Jiangsu,China;
    1Department of Forensic Science,Sun yat-sen University,Guangzhou 510080,Guangdong,China
  • Received:2003-05-27 Revised:2003-06-30 Online:2003-12-26 Published:2020-11-19

Abstract: AIM: To study the direct effect of dexamethasone on the degranulation of mast cells.METHODES:The flow cytometry was used to observe the effect of dexamethasone on the degranulation of RBL-2H3 cellline(rat basophileleukemia cellline),and the changes of ERK1/ERK2 signal transduction characteristics was analyzed by western blot.RESULTS:Pre-treating RBL-2H3 cellline with dexamethasone resulted in the decrease of Annexin VPositive staining of cells and the activity of MAPK compared that of the activated group.CONCLUSION: The inhibition of dexamethasone on mast cells is associated with the activity of MAPK.

Key words: dexamethasone, mast cells, RBL-2H3, degranulation, Annexin V, MAPK

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