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Chinese Journal of Clinical Pharmacology and Therapeutics ›› 2014, Vol. 19 ›› Issue (2): 145-149.

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Telithromycin suppresses nontypeable Haemophilus influenzae-induced MUC5AC expression via inhibition of activator protein-1 signaling

YANG Fan, LI Jian, GU Bin, ZHAO Wen-jian, YANG Zhi-ying   

  1. Department of Microbiology and Immunology, Xiang Nan College of Medicine Department of Basic Medicine,Chenzhou 423000, Hunan, China
  • Received:2012-12-12 Revised:2014-01-08 Online:2014-02-26 Published:2014-03-31

Abstract: AIM: To investigate the effect of Telithromycin on nontypeable Haemophilus influenza (NTHi)-induced mucus MUC5AC expression in airway epithelial cells and underlying molecule mechanism.METHODS: Cultured NCI-H292 cells were pre-incubated with 10 mg/L of Telithromycin for 6 h, and then NTHi was added in different concentrations for 3-9 h. MUC5AC gene mRNA level and mucin protein expression were quantified by real time PCR and ELISA, respectively; DNA-binding activities of NF-κB and activator protein-1 (AP-1) were detected by ELISA.RESULTS: NTHi significantly increased MUC5AC gene and protein expression in NCI-H292 cells, and it could activate NF-κB and AP-1. Telithromycin significantly attenuated NTHi-induced MUC5AC mRNA and protein expression, and inhibit AP-1 activation as well, but not NF-κB.CONCLUSION: Telithromycin can attenuate NTHi-induced mucus expression via inhibition of AP-1 but not NF-κB.

Key words: nontypeable haemophilus influenzae, telithromycin, activator protein-1, NF-κB, MUC5AC

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