| Project/Area Number |
23590836
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Public health/Health science
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| Research Institution | Osaka Prefectural Institute of Public Health |
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Principal Investigator |
KIMURA Akio 大阪府立公衆衛生研究所, その他部局等, その他 (00250283)
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| Co-Investigator(Kenkyū-buntansha) |
EDAGAWA Akiko 大阪府立公衆衛生研究所, 衛生科学部生活環境課, 主任研究員 (80321941)
倉田 貴子 大阪府立公衆衛生研究所, その他部局等, 研究員 (70435890)
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| Project Period (FY) |
2011 – 2013
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2012: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2011: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Keywords | Acanthamoeba / 細胞障害性 / アカントアメーバ / 特異抗原蛋白質 |
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| Research Abstract |
We investigated cytopathic effect of Acanthamoeba T2, T4 and T7 genotypes on human corneal epithelial cell (HCE-T). Cytopathic effects were observed not only in T4 genotype but also in T2 genotypes that classified as nonpathogenic species by 18SrRNA genotyping. These results suggested the discrepancy between 18sRNA typing and actual pathogenicity of Acanthamoeba species. In addition, we found that protease inhibitor did not inhibit cytopathic effect of Acanthameoba on HCE-T cell, and after challenging Acanthamoeba to rabbit kidney 13 cell induced interferon via interferon-sensitive response element. These results suggested the existence of novel mechanism of Acanthamoeba keratitis. To investigate antigen which might be useful for diagnosis of amoebic keratitis, we constructed cDNA library of A. castellanii and screened immunologically using polyclonal rabbit antibody against A. castellanii soluble antigen. However, in spite of our expectation, we could not obtain positive clones.
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