Progress in Allergy Signal Research on Mast Cells : Up-Regulation of Histamine Signal-Related Gene Expression in Allergy Model Rats
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概要
- 論文の詳細を見る
Brown Norway allergy model rats sensitized to toluene 2,4-diisocyanate (TDI) were developed. Histamine H1 receptor mRNA level was elevated in nasal mucosa of allergy model rats after the provocation with TDI, which was followed by H1-receptor up-regulation. Elevation of histamine H1 receptor mRNA was partially suppressed by d-chlorpheniramine and olopatadine, antihistamines. Histamine induced increase in histamine H1 receptor gene expression in vitro, and the protein kinase C-δ isoform was suggested to mediate the gene expression. On the other hand, elevation of histamine H1 receptor mRNA was completely suppressed by dexamethasone in allergy model rats. Provocation with TDI also induced mRNA elevation of histidine decarboxylase, a sole histamine-forming enzyme, followed by the increase of both HDC activity and histamine content in nasal mucosa of allergy model rats. HDC mRNA elevation and increase in both HDC activity and histamine level were almost completely suppressed by dexamethasone. These observations suggest that histamine H1 receptor up-regulation and increase in histamine level play an important role in allergy through the regulation of histamine signaling.
- 社団法人 日本薬理学会の論文
- 2008-03-20
著者
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Fukui Hiroyuki
Department Of Molecular Pharmacology Institute Of Health Biosciences The University Of Tokushima Gra
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Fukui Hiroyuki
Department Of Medicine Yao City Hospital
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