2002 Fiscal Year Final Research Report Summary
MECHANISMS IN EXPRESSIONS OF TWO FORMS OF VITELLOGENINS IN FISH
| Project/Area Number |
13660175
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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 | HOKKAIDO UNIVERSITY |
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Principal Investigator |
ADACHI Shinji Hokkaido Univ., Grad. School of Fish. Sci., Asso. Pro., 大学院・水産科学研究科, 助教授 (40231930)
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| Co-Investigator(Kenkyū-buntansha) |
MATSUBARA Takahiro Hokkaido Natl. Fish. Res. Inst., Head Researcher, 北海道区水産研究所, 室長
HARA Akihiko Hokkaido Univ., Grad. School of Fish. Sci., Pro., 大学院・水産科学研究科, 教授 (40091483)
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| Project Period (FY) |
2001 – 2002
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| Keywords | Vitellogenin / Japanese goby / Gene expression / Phosvitin / Lipovitellin / β'-Component / Estradiol-17β / Teleost |
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| Research Abstract |
Recently, two forms of vitellogenin (Vg) were found in Japanese goby. In this study, we investigated the hormonal regulations of the two forms of Vg using liver culture system.
Organ culture with slices from both male and female liver was attempted for the analyses. The Vg levels were measured inculture media by newly developed specific enzyme-linkedimmunosorbent assay for the each Vg (530kVg and 320kVg) after the incubation for 7 days with various doses of estradiol-17β (E2).
In male liver, almost the same amount of 530k and 320kVgwere produced in response to E2 in dose dependent manner. Incontrast, the levels of both Vgs in female liver at vitellogenic stage were apparently higher than those in male liver, although 2-3fold 530kVg was detected as compared with 320kVg. Inaddition, the levels of both Vgs produced by the female liver incubated without E2 were not significantly different from those with E2.
These results suggest that 530kVg and 320kVg were regulated differentially.
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Research Products
(6 results)
