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Published on: January 21, 2018
Niflumic acid reduces histamine-induced interleukin-6 and -8 expression in human conjunctival epithelial cells
Sung A Lim1, Kyu Yeon Hwang, So-Hyang Chung
1Department of Ophthalmology and Visual Science, Seoul St. Mary's Hospital, College of Medicine, Catholic University of Korea, Seoul, Republic of Korea.
Background/Aims:
Histamine remains the main mediator of allergic conjunctivitis and induces interleukin (IL)-6 and IL-8 production in human conjunctival epithelial cells (HCEC). The purpose of the present study was to determine whether histamine induced IL-6 and IL-8 expression in HCEC, and to describe the relationship between human calcium-activated chloride channel (hCLCA) 1 activity and IL-6 and IL-8 expression.
Methods:
HCEC were isolated from human conjunctiva and cultured at an air-liquid interface. IL-6 and IL-8 mRNA expression was examined by real-time PCR, and IL-6 and IL-8 secretion was measured by ELISA after stimulation of HCEC with histamine.
Results:
Histamine upregulated IL-6 and IL-8 expression and IL-6 and IL-8 secretion in a dose-dependent manner in HCEC. Niflumic acid (NFA), an hCLCA blocker, reduced histamine-induced IL-6 and IL-8 expression.
Conclusion:
Histamine-induced IL-6 and IL-8 production could be attenuated by NFA, an hCLCA blocker.
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