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STUDIES ON IGF-I SIGNAL CASCADE ON MUSCLE PROTEIN RETENTION

Research Project

Project/Area Number 15380194
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Applied animal science
Research InstitutionNagoya University

Principal Investigator

KITA Kazumi  Nagoya University, Graduate School of Bioagricultural Sciences, Associate Professor, 大学院・生命農学研究科, 助教授 (20221913)

Co-Investigator(Kenkyū-buntansha) HAYASHI Kunioki  Kagoshima University, Faculty of Agriculture, Professor, 農学部, 教授 (80041656)
TSUKADA Hikaru  Nagoya University, Graduate School of Bioagricultural Sciences, Assisitant Professor, 大学院・生命農学研究科, 助手 (20343212)
Project Period (FY) 2003 – 2005
Project Status Completed (Fiscal Year 2005)
Budget Amount *help
¥11,700,000 (Direct Cost: ¥11,700,000)
Fiscal Year 2005: ¥2,500,000 (Direct Cost: ¥2,500,000)
Fiscal Year 2004: ¥2,700,000 (Direct Cost: ¥2,700,000)
Fiscal Year 2003: ¥6,500,000 (Direct Cost: ¥6,500,000)
Keywordschicken embryo myoblast / muscle / Medium 199 / Protein synthesis= / protein degradation / leucine / methionine / glycine / ニワトリ / 飼料蛋白質 / 3メチルヒスチジン
Research Abstract

Influence of methionine and/or glycine deficiency on protein synthesis of chicken embryo myoblasts cultured in Medium 199 was examined. Protein synthesis cultured in Medium 199 in which all ingredients were solved in Dulbecco's modified phosphate buffered saline was dramatically lower than that in Medium 199 in which all ingredients were solved in water. Although methionine deficiency from Medium 199 decreased myoblast protein synthesis, glycine deficiency did not affect. There was no interaction between methionine and glycine deficiency on myoblast protein synthesis.
The influence of leucine and fetal calf serum (FCS) in Medium 199 on protein synthesis and degradation of chicken embryo myoblasts was examined. Medium 199 included 0, 1, 2, 5, 10% FCS and 457 (original concentration of leucine in Medium 199), 2287, 4574μmol leucine/l. There was an interaction between leucine and FCS concentrations on muscle protein synthesis in vitro. When FCS was not included in Medium 199, myoblast prot … More ein synthesis was stimulated with an increment in leucine concentration in the medium from 2287 to 4574 μmol/l. When 1 or 2% of FCS was included in Medium 199, myoblast protein synthesis was stimulated by increasing leucine concentration in the medium from 457 to 2287 μmol/l, and at the higher level of leucine, protein synthesis was not stimulated. At more than 5% of FCS in the medium, myoblast protein synthesis at higher concentration of luecine of 4574μmol/l was significantly lower than those of lower leucine levels.
No interaction between leucine and FCS concentrations on muscle protein degradation Was observed. Protein degradation of chicken embryo myoblasts was decreased by an increment of FCS concentration in the medium from 0 to 5%, and at the higher level no significant influence was observed. When leucine concentration of in the medium was increased from 457 to 2287μmol/l, protein degradation of chicken embryo myoblasts was decreased. But high concentration of leucine at 4457μmol/l did not affect protein degradation of chicken embryo myoblasts. Less

Report

(4 results)
  • 2005 Annual Research Report   Final Research Report Summary
  • 2004 Annual Research Report
  • 2003 Annual Research Report
  • Research Products

    (2 results)

All 2005

All Journal Article (2 results)

  • [Journal Article] Nutritional and tissue specificity of IGF-I and IGFBP-2 gene expression in growing chickens2005

    • Author(s)
      Kita, K., Nagao, K., Okumura, J
    • Journal Title

      Asian-Australasian Journal of Animal Sciences 18・5

      Pages: 747-754

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Localization of insulin-like growth factor-I (IGF-I) in the chicken liver after fasting and refeeding : Demonstration by antigen retrieval immunohistochemistry.2005

    • Author(s)
      Hiramatsu, K., Nagao, K., Kita, K.
    • Journal Title

      Journal of Veterinary Medical Science 67・4

      Pages: 393-397

    • Related Report
      2005 Annual Research Report

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Published: 2003-04-01   Modified: 2016-04-21  

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