2013 Fiscal Year Final Research Report
Structure and function of the vitamin A-storing cells in the digestive tract
Project/Area Number |
23590228
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
General anatomy (including Histology/Embryology)
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Research Institution | Akita University |
Principal Investigator |
SENOO Haruki 秋田大学, 医学(系)研究科(研究院), 教授 (90171355)
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Co-Investigator(Kenkyū-buntansha) |
MEZAKI Yoshihiro 秋田大学, 大学院医学系研究科, 助教 (40431621)
YOSHIKAWA Kiwamu 秋田大学, 大学院医学系研究科, 助教 (90400481)
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Project Period (FY) |
2011 – 2013
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Keywords | 消化管 / 粘膜固有層 / ビタミンA / ビタミンA貯蔵細胞 |
Research Abstract |
Vitamin A (retinyl palmitate) was injected subcutaneously or administered to rats by tube feeding. After subcutaneous injection, vitamin A was taken up and stored in cells in lamina propria mucosae of the rat intestine. After oral administration, vitamin A was absorbed from intestinal absorptive epithelial cells and transferred to the lamina propria mucosae; cells in the lamina propria mucosae took and stored the transferred vitamin A. Morphology of these cells was similar to that of a hepatic stellate cells (also called vitamin A-storing cell, lipocyte, interstitial cell, fat-storing cell, or Ito cell). Thus, these cells in the intestine can take up vitamin A from both of the systemic circulation and intestinal absorption, and store the vitamin in the lipid droplets in the cytoplasm. These data suggest that these cells are extrahepatic stellate cells of the digestive tract and may play roles in absorption and homeostasis of vitamin A.
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[Journal Article] Characterization of a cellular retinol binding protein from lamprey, Lethenteron japonicum. CBP Part B2012
Author(s)
Mezaki, M., Morii, M., Yoshikawa, K., Yamaguchi, N., Miura, M. , Imai, K., Yoshino, H., Senoo, H
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Journal Title
Biochemistry & Molecular Biology
Volume: 161
Pages: 233-239
Peer Reviewed
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[Presentation] The metabolism of cholesterol after bile duct degeneration in lamprey2012
Author(s)
Morii, M., Mezaki, Y., Yamaguchi, N., Yoshikawa, K., Miura, M., Imai, K., Hebiguchi, T., Watanabe, R., Yoshino, H., Senoo, H
Organizer
第117回日本解剖学会総会・全国学術集会
Place of Presentation
山梨
Year and Date
20120300
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