Local increase in IgE in nasal polyps in chronic rhinosinusitis
| Project/Area Number |
15K20187
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Otorhinolaryngology
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| Research Institution | The University of Tokyo |
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Principal Investigator |
Baba Shintaro 東京大学, 医学部附属病院, 届出診療員 (90553719)
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| Co-Investigator(Renkei-kenkyūsha) |
OOTA Ken 国立病院機構, 東京病院, 院長 (30160500)
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Keywords | 副鼻腔炎 / 好酸球 / IgE / マスト細胞 / 慢性副鼻腔炎 / 鼻ポリープ |
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| Outline of Final Research Achievements |
To investigate the distribution, phenotypes, and immunoglobulin E (IgE) positivity of mast cells in these 2 subtypes of Chronic rhinosinusitis with nasal polyps (CRSwNP).
Expression of tryptase mRNA was significantly increased in nasal polyps from patients with the 2 subtypes of CRSwNP compared with controls. Immunohistochemistry showed increased numbers of tryptase-positive mast cells in the epithelium, glands, and submucosa of ECRS polyps, whereas the number
of tryptase- and chymase-positive mast cells was increased in the glands and submucosa of non-ECRS polyps. IgE-positive mast cells were abundant in the epithelial, glandular, and submucosal regions of ECRS polyps but few were detected in non-ECRS polyps. The present study demonstrates that the distribution, subtype population, and IgE positivity of mast cells is different between ECRS and non-ECRS nasal polyps. Our results suggest a role for IgE-mediated mast cell activation in the pathogenesis of ECRS.
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Report
(4 results)
Research Products
(9 results)
