| Project/Area Number |
11660186
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
General fisheries
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| Research Institution | Mie University |
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Principal Investigator |
MIYAZAKI Teruo Mie University, Faculty of Bioresources, Professor, 生物資源学部, 教授 (20046345)
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| Project Period (FY) |
1999 – 2000
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| Project Status |
Completed (Fiscal Year 2000)
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| Budget Amount *help |
¥3,200,000 (Direct Cost: ¥3,200,000)
Fiscal Year 2000: ¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 1999: ¥1,700,000 (Direct Cost: ¥1,700,000)
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| Keywords | Japanese pearl oysters / Japanese oysters / A recombinant feline interferon / rFeIFN-receptor / ウイルス性外套膜緑色化症 / 大量死 / アコヤウイルス / rFeIFN-ω投与 / 治療効果 |
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| Research Abstract |
Many new viral diseases occur and caused great economic losses in cultured fishes, Japanese pearl oysters and Japanese oysters.In the present study, I examined the clinical efficacy of administration of a recombinant feline interferon (rFeIFN) to protect Japanese pearl oysters from akoya-virus infection and Japanese oysters from 'Viral green mantle disease' (VGMD). The good efficacy resulted in treating Japanese pearl oysters that were artificially infected with cultured akoya-virus. On the other hand, the rFeIFN administration to Japanese oysters that were infected with cultured VGMD-virus resulted in lesser efficacy in prophylaxis and treatment.
Moreover, I examined the rFeIFN-receptor on hemocytes of pearl oysters and Japanese oysters because hemocytes work for phagocytizing viruses and preventing the virally-infected lesions from development. Almost 56% of agranulocytes of pearl oysters possessed the rFeIFN-receptor on the cytoplasms. Therefore, in pearl oyster, agranulocytes with the rFeIFN-receptor were enhanced the phagocytic potential by rFeIFN.On the other hand, only 7.3% agranulocytes of Japanese oysters possessed the rFeIFN-receptor, which caused lesser efficacy.
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