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Studies on canine erythrocyte insulin receptors

Research Project

Project/Area Number 63560301
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field Applied veterinary science
Research InstitutionThe University of Tokyo

Principal Investigator

ONO Kenichiro  Univ. of Tokyo, Fac. of Agr. Assoc. Professor, 農学部, 助教授 (50111480)

Co-Investigator(Kenkyū-buntansha) GOITSUKA Ryo  Univ. of Tokyo, Fac. of Agr. Assist. Professor, 農学部, 助手 (60205581)
YASUDA Kazuo  Univ. of Tokyo, Fac. of Agr. Assist. Professor, 農学部, 助手 (90134519)
HASEGAWA Atsuhiko  Univ. of Tokyo, Fac. of Agr. Professor, 農学部, 教授 (90011923)
Project Period (FY) 1988 – 1989
Project Status Completed (Fiscal Year 1989)
Budget Amount *help
¥1,800,000 (Direct Cost: ¥1,800,000)
Fiscal Year 1989: ¥200,000 (Direct Cost: ¥200,000)
Fiscal Year 1988: ¥1,600,000 (Direct Cost: ¥1,600,000)
Keywordsdog / erythrocyte / insulin receptor / diabetes mellitus / hyperadrenocorticism / 副腎皮質機能亢進症 / インスリンレセプター
Research Abstract

For investigation on the mechanism of the cellular insulin insensitivity in some disorders, such as diabetes mellitus and hyperadrenocorticism in dogs, the erythrocyte insulin receptors were examined as follows.
1. The optimal condition for the measurement of canine erythrocyte insulin receptors: 3 incubation temperatures (4゚C, 15゚C, and 37゚C) and various incubation periods (from 0 to 8 hours) were examined. The results of this experiment revealed that the optimal condition for the measurement of canine erythrocyte insulin receptors was at 4゚C as incubation temperature and for 6 hours as incubation period. Under these conditions, the number of insulin receptors and their affinity in empty site(Ke) and the filled site(Kf) of insulin receptors were 21.22+10.9/cell, and 0.297+0.117/ng and 0.045+0.008/ng in canine erythrocyte, respectively.
2. In the case of spontaneous diabetes mellitus: in 5 cases of spontaneous diabetes-dogs, the number(159.0+167.3, range 63.4-456.6) was higher, and the Ke(0.017+0.010/ng) and Kf(0.009+0.005/ng) levels were lower than those of clinically healthy dogs. After insulin treatment on 3 cases, the number was decreased(before;110.2, 89.6, and 75.4, after;21.2, 11.0, and 49.8, respectively), and Ke and Kf levels were increased.
3. In the case of hyperadrenocorticism; in 3 cases of dexamethasone induced hyperadrenocorticism, the number of insulin receptors was decreased and the affinity(Ke and Kf) was increased, while the glucose disappearance rate and/or hyperinsulinism were observed. In 8 cases of spontaneous hyperadrenocorticism, no difference in the number, Ke, and Kf levels of erythrocyte insulin receptors were observed.

Report

(3 results)
  • 1989 Annual Research Report   Final Research Report Summary
  • 1988 Annual Research Report
  • Research Products

    (10 results)

All Other

All Publications (10 results)

  • [Publications] Kenichikro ONO et al.: "The cellular composition in the pancreatic islet of a cow with spontaneous diabets mellitus." Jpn.J.Vet.Sci.51. 1067-1069 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Kenichiro ONO et al.: "Insulin receptors of canine erythrocytes." Jpn.J.Vet.Sci.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Kenichiro ONO et al.: "Erythrocyte insulin receptors in diabetic dogs." Jpn.J.Vet.Sci.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Kenichiro ONO et al.: "Erythrocyte insulin receptors in dogs with hyperadrenocorticism." Jpn.J.Vet.Sci.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 小野憲一郎: "糖尿病、pp51〜71、牛の代謝性疾患、本好茂一編" 学窓社, 21 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Kenichiro ONO: "The cellular composition in the pancreatic islet of a cow with spontaneous diabetes mellitus." Jpn. J. Vet. Sci.51. 1067-1069

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Kenichiro ONO et al.: "Insulin receptors of canine erythrocytes" Jpn.J.Vet.Sci.

    • Related Report
      1989 Annual Research Report
  • [Publications] Kenichiro ONO et al.: "Erythrocyte insulin receptors in diabetic dogs" Jpn.J.Vet.Sci.

    • Related Report
      1989 Annual Research Report
  • [Publications] Kenichiro ONO et al.: "Erythrocyte insulin receptors in dogs with hyperadrenocorticism" Jpn.J.Vet.Sci.

    • Related Report
      1989 Annual Research Report
  • [Publications] Kenichiro,ONO: Jpn.J.Vet.Sci.

    • Related Report
      1988 Annual Research Report

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Published: 1988-04-01   Modified: 2016-04-21  

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