KMID : 1143120160060040236
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Asia Pacific Allergy 2016 Volume.6 No. 4 p.236 ~ p.244
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Imidacloprid inhibits IgE-mediated RBL-2H3 cell degranulation and passive cutaneous anaphylaxis
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Shi Linbo
Zou Li Gao Jinyan Xu Huaing Shi Xiaoyun Chen Hongbing
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Abstract
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Background: Imidacloprid has been commonly used as a pesticide for crop protection and acts as nicotinic acetylcholine receptor agonists. Little information about the relationship between imidacloprid and allergy is available.
Objective: This study aims to examine the effects of imidacoprid on IgE-mediated mast cell activation.
Methods: The rat basophilic leukemia cell line RBL-2H3 (RBL-2H3 cells) were treated with 10-3 ? 10-12 mol/L imidacloprid, followed by measuring the mediator production, influx of Ca2+ in IgE-activated RBL-2H3 cells, and the possible effects of imidacoprid on anti-dinitrophenyl IgE-induced passive cutaneous anaphylaxis (PCA).
Results: It was shown that imidacoprid suppressed the production of histamine, ¥â-hexosaminidase, leukotriene C4, interleukin-6, tumor necrosis factor-¥á, and Ca2+ mobilization in IgE-activated RBL-2H3 cells and decreased vascular extravasation in IgE-induced PCA.
Conclusion: It is the first time to show that imidacloprid suppressed the activation of RBL-2H3 cells.
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KEYWORD
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Imidacloprid, Mast cells, Ca2+ influx
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