2012 Fiscal Year Final Research Report
Elucidation of anti-obesity mechanism by new energy metabolism regulatory factor
Project/Area Number |
23780296
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Research Category |
Grant-in-Aid for Young Scientists (B)
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Allocation Type | Multi-year Fund |
Research Field |
Basic veterinary science/Basic zootechnical science
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Research Institution | University of Miyazaki |
Principal Investigator |
AKIEDA Sayaka 宮崎大学, フロンティア科学実験総合センター, 助教 (20549076)
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Project Period (FY) |
2011 – 2012
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Keywords | マクロファージ / 脂肪細胞 / 肥満 / 高脂肪食耐性動物 / エネルギー代謝調節 |
Research Abstract |
A high-fat diet (HFD) is a well-known contributing factor in the development of obesity. Most rats fed HFDs become obese. Those that avoid obesity when fed HFDs are considered diet resistant (DR). We performed a microarray screen to identify genes specific to the mesenteric fat of DR rats and revealed high expression of guanylin and guanylyl cyclase C (GC-C) in some subjects. Our histologic studies revealed that the cellular source of guanylin and GC-C is macrophages. Therefore, we developed double-transgenic (Tg) rats overexpressing guanylin and GC-C inmacrophages and found that they were resistant to the effects of HFDs. Our results suggest that the macrophagic guanylin-GC-C system contributes to the altered expression of genes involved in lipid metabolism, leading to resistance to obesity.
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[Journal Article] Involvement of guanylin and GC-C in rat mesenteric macrophages in resistance to high-fat diet2013
Author(s)
Akieda-Asai S, Sugiyama M, Miyazawa T, Koda S, Okano I, Senba K, Poleni PE, Hizukuri Y, Okamoto A, Yamahara K, Mutoh E, Aoyama F, Sawaguchi A, Furuya M, Miyazato M, Kangawa K, Date Y
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Journal Title
J Lipid Res
Volume: 54
Pages: 85-96
DOI
Peer Reviewed
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[Presentation] A new bioactive peptide and its receptor cascades prevent the accumulation of lipid droplets2011
Author(s)
Akieda-AsaiS, Sugiyama M, Miyazawa T, Koda S, Okano I, Senba K, Poleni PE, Hizukuri Y, Okamoto A, Mutoh E, Furuya M, Miyazato M, Kangawa K, Date Y
Organizer
Keystone Symposia (Lipid Biology and Lipotoxicity)
Place of Presentation
Killarney (Ireland)
Year and Date
20110500
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[Remarks] 受賞 第155回 日本獣医学会、大会長賞受賞 (2013 年)
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[Remarks] 受賞 2012 年度 宮崎大学女性研究者奨励賞 (研究部門)
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[Remarks] 受賞 コスモバイオ学術論文賞(J Lipid Res;2012 年)
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