Journal of Capital Medical University ›› 2015, Vol. 36 ›› Issue (4): 604-609.doi: 10.3969/j.issn.1006-7795.2015.04.018

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Role of histamine in regulation of barrier function in human keratinocytes

Duan Su1,3, Jiao Jian2,3, Zhang Luo1,2,3   

  1. 1. Department of Allergy, Beijing Tongren Hospital, Capital Medical University, Beijing 100005, China;
    2. Department of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100005, China;
    3. Beijing Key Laboratory of Nasal diseases, Beijing Institute of Otolaryngology, Beijing 100005, China
  • Received:2015-06-03 Online:2015-08-21 Published:2015-07-17
  • Supported by:

    This study was supported by The 12th Five-year Science and Technology Support Project(2014BAI07B04), the Program for Changjiang Scholars and Innovative Research Team(IRT13082), Natural Science Foundation of Beijing(7131006), Beijing Municipal Administration of Hospitals Clinical Medicine Development of Special Funding Support(ZYLX201310).

Abstract:

Objective We try to investigate the role of histamine in regulation of barrier function of human keratinocytes by testing the changes of trans-epithelial resistance(TER) and paracellular flux of primary human keratinocytes in vitro stimulated by histamine. Methods We cultured primary human keratinocytes from healthy and atopic dermatitis(AD) individuals in the presence and absence of histamine, histamine receptor blocker for 96 hours in air-liquid interface(ALI) culture systems. The epithelial barrier function was evaluated by measuring TER and FITC-Dextran paracellular flux. Results Histamine decreased the barrier integrity of human keratinocytes in ALI cultures by impairing TER increase and increasing the paracellular flux to Fitc-Dextran in a dose- and time-dependent manner. There was a statistically significant difference between histamine stimulated group and un-stimulated group. Histamine 1 receptor(H1R) antagonist could block the effect of histamine to TER and Ca2+ ionophore ionomycin could induce the similar effect to TER with histamine with statistical significance. Conclusion Our findings that histamine impairs human keratinocytes barrier function might contribute to the pathogenesis of chronic skin inflammatory diseases such as AD and might indicate a possibility for clinical therapeutic strategy.

Key words: histamine, skin keratinocytes, barrier function

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