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The factor analysis causing hereditary awarfism of the rdw rat and evaluatio as an animal model

Research Project

Project/Area Number 08680911
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Laboratory animal science
Research InstitutionKITASATO UNIVERSITY

Principal Investigator

FURUDATE Sen-ichi  Kitasato Univ.Sch.of Med., Asso ciate Prof., 医学部, 助教授 (80095512)

Co-Investigator(Kenkyū-buntansha) SAKAI Yasuhiro  Kitasato Univ.Sch.of Med.Associate Prof., 医学部, 助教授 (00050625)
KOJIMA Hisako  Kitasato Univ.Sch.of Associate Prof., 医学部, 助教授 (90118810)
ONO Masao  Rikkyo Univ.Sch, of Science, Prof., 理学部, 教授 (40050645)
Project Period (FY) 1996 – 1997
Project Status Completed (Fiscal Year 1997)
Budget Amount *help
¥2,400,000 (Direct Cost: ¥2,400,000)
Fiscal Year 1997: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 1996: ¥1,200,000 (Direct Cost: ¥1,200,000)
Keywordsdwarfism / hypothyhoidism / rdw / thyroglobulin / endoplasmic reticulum / chaperone / stress protein / ERSD / 原発性甲状腺機能低下症 / hsp70 / Bip / エンドプラスミン / 分子シャペロン / 小胞体蓄積病(ERSD) / 遺伝性侏儒症 / 卵巣移植 / CNPase / サイクログロブリン
Research Abstract

The rdw rat was initially reported as an animal model for fereditary dwarfism, but the rat has been shown as primary hypothyroidism by much accumulated evidence. We examined the thyroid gland of the rdw rat morphologically and proteins of the gland related to the hereditary dwarfism and/or primary hypothyroidism. The thyroid gland of rdw seems very poor in the general development. The average size of the follicle was very small. The follicle lumen was not stained with hematoxylin and eosin. In electron microscope observation, a huge vacuole was seen in the infra-nuclear region and the nucleus was shifted to the lamina side in the follicular epithelial cells of rdw. Secretory granules could not be detected in follicular epithelial cells. The cytoplasm of follicular cells had markedly distended rough endoplasmic reticulum. Proteins having relations to hereditary dwarfism of the rdw rat were searched for in various tissues of the rat with an improved two-dimensional gel electrophoresis technique followed by immunoblotting and microsequencing. Only pituitary and thyroid glands among those tissues showed abnormalities in protein contents. GH and PRL contents in the rdw pituitary were much less than in the normal one, but the abnormalities in the rdw thyroid were far more serious than in the pituitary. At least 18 protein levels in the rdw thyroid were above, and 17 were below the normal. Those identified among the increased proteins were endoplasmin, immunoglobulin heavy chain binding protein (Bip), and heat shock protein 70 (hsp70), the contents of which respectively were a40 times, 10 times and more than 50 times as much in the rdw thyroid as in the normal tissue. Because Bip and endoplasmin are known to be ER resident proteins, and because all three belong to a chaperone protein family, accumulation of these proteins in the rdw, thyroid suggests that protein folding and secreting disorders underlie the hypothyroidism of the rdw rat.

Report

(3 results)
  • 1997 Annual Research Report   Final Research Report Summary
  • 1996 Annual Research Report
  • Research Products

    (15 results)

All Other

All Publications (15 results)

  • [Publications] T.kimura & S.Furudate: "Pituitary Gtt and prolactin deficiency and testis enlargement in hypothyroid rats caused by goitrogen methimazole" Exp.Anim.45(4). 369-375 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 古舘 要一.酒井 康弘: "遺伝性侏儒症ラットrdw甲状腺の形態学的解析" 成長科学協会 研究年報. 20. 335-346 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] M.Oh-Ishi, A.Omori, T.Maeda, & S.Furudate: "Characterization and identification of proteins related to the rdw rat with hereditary dwarfism" Proc.Jpn.Soc.Com.Endocrinol.12. 54 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] M.Oh-Ishi, A.Omori, T.Maeda, & S.Furudate: "Identification of proteins related to the rdw rat with hereditary dwarfism" 13th International Congress of Com,Endocrinol.933-936 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] M.Oh-Ishi, A.Omori, J-Y.kwon, T.Agui, T.Maeda, & S.Furudate: "Detection and identification of proteins related to the hereditary dwarfism of the rdw rat" Endocrinology. 139. 1288-1299 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Kimura & S.Furudate: "Pituitary GH and prolactin deficiency and testis enlargement in hypothyroid rats caused by goitrogen methymazole" Exp.Anim.45(4). 369-375 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] S.Furudate & Y.Sakai: "Moropnorogical analysis of the thyroid gland in the rdw rat with hereditary dwarfism" The Foundation for Growth Science, Annual.Research Repoets. 20. 335-346 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] M.Oh-Ishi, A.Omori, T.Maeda & S.Furudate: "Identification of proteins related to the rdw rat with hereditary dwarfism" Proc.of the 13th International Cong.of Com.Endocrinol. 933-936 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] M.Oh-Ishi, A.Omori, J.Y.Kwon, T.Agui, T.Maeda & S.Furudate: "Detection and identification of proteins related to the hereditary dwarfism of the rdw rat" Endocrinology. 139. 1288-1299 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] M.Oh-Ishi, A.Omori, T.Maeda & S.Furudate: "Characterization and identification of Proteins related to the rdw rat with hereditary dwarfism" Proc.Jpn.Soc.Com.Endocrind. 12. 54 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] M.Oh-Ishi,A.Omori,T.Maeda,& S.Furudate: "Characterization and identification of profeins related to the rdw rat with hereditary dwarfism" Proc.of the Japan Society for Comparative Endoerinology. 12. 54 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] M.Oh-Ishi,A.Omori,T.Maeda,& S.Furudate: "Identification of profeins related to the rdw rat with hereditary dwarfism" Proc.of the XIII International Congress of Comparative Endocrinology. 933-936 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] M.Oh-Ishi,A.Omori,J-Y.Kwon,T.Agui,T.Maeda & S.Furudate: "Defection and idenrification of proteins related to the hereditary dwarfism of the rdw rat" Endocrinology. 139(in press). (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] 古館専一、酒井康弘: "遺伝性侏儒症ラットrdw甲状腺の形態学的解析" 成長科学協会(研究年報). 20. 335-346 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] T.Kimura & S.Furudate: "Pituitary GH and prolactin deficiency and Testisenlargement in hypothyroid rats caused by goitrogen methimazcle" Exp.Anim.45(4). 369-375 (1996)

    • Related Report
      1996 Annual Research Report

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Published: 1996-04-01   Modified: 2016-04-21  

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