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Trabecular bone turnover and bone marrow cell development after immobilization

Research Project

Project/Area Number 08671706
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Orthopaedic surgery
Research InstitutionUniversity of Occupational and Environmental Health

Principal Investigator

SAKAI Akinori  University of Occupational and Environmental Health, School of Medicine, Assistant Professor, 医学部, 教授 (90248576)

Co-Investigator(Kenkyū-buntansha) NAKAMURA Toshitaka  University of Occupational and Environmental Health, School of Medicine, Profess, 医学部, 教授 (50082235)
Project Period (FY) 1996 – 1998
Project Status Completed (Fiscal Year 1998)
Budget Amount *help
¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 1998: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 1997: ¥600,000 (Direct Cost: ¥600,000)
KeywordsImmobilization / Bone marrow / Osteoporosis / Parathyroid hormone / Osteblast / Osteoclast / mRNA / Mouse / フローサイトメトリー / RT-PCR / 骨萎縮 / 骨代謝回転 / 形態計測
Research Abstract

During the three years from 1996 to 1998, we clarified trabecular bone turnover and bone marrow cell development after immobilization and the effects of parathyroid hormone (PTH) on immobilization-related bone loss.
Methods : 1)6 week-old ddY male mice were subjected to eitherright sciatic neurectomy (Nx) or sham operation for left limbs (Sham). Histomorphometrical study was perfonned on the proximal metaphysis of tibia. 2) Bone marrow cell development was evaluated 3) FACSanalysis was done. Using RT-PCR procedure, mRNA expression of PTH/PTHrP was studied. 4) Either of 4 or4O mug/kgBW of PTH was administered subcutaneously 5 times a week.
Results : 1) Trabecular bone volume significantly decreased 14days after immobilization. The number of osteoclasts transiently increased and bone formation increased after immobilization. 2) Adherent cellnumber transiently decreased andreturned to the same values of the Sham group 12 days after immobilization. The number of osteoclast-like cell formed from the bone marrow cells obtained from the Nx limbs increased under PTH addition. 3) There was no differences in the number of Mac-1positive cells between the Nx and Sham limbs. PTH/PTHrP mRNA was elevated in the bone marrow cells obtained from the Nx limbs on day 7.4)
4)PTH administration prevented immobilization-related bone loss.
These results demonstrated that immbilization caused transient decrease in bone formation and increase in the number of osteoclasts, leading to significant bone loss. The number of adherentmarrow cells increased and the terminal differentiation process of osteoclasts was promoted by PTH.PTH administration prevented immobilization-related bone loss. PTH/PTHrP signaling pathway was promoted in the bone marrow cells of the immobilized limbs.

Report

(4 results)
  • 1998 Annual Research Report   Final Research Report Summary
  • 1997 Annual Research Report
  • 1996 Annual Research Report
  • Research Products

    (33 results)

All Other

All Publications (33 results)

  • [Publications] 酒井昭典: "運動制限モデル実験" Clinical Calcium. 8・6. 50-52 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 中村利孝、ほか: "骨不動化における骨組織動態と骨髄の細胞" 日本骨形態計測学会雑誌. 8・1. 25-31 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Sakai A, et al: "Bone marrow cell development and trabecular bone dynamics after ovariectomy in ddy mice." Bone. 23・5. 443-451 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 酒井昭典、ほか: "新しい骨作用薬(3)副甲状腺ホルモン(PTH)" 腎と骨代謝. 11・4. 153 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 酒井昭典、ほか: "骨粗鬆症の病態と発症機序(3)不動化と骨粗鬆症" 臨床科学. 34・10. 1320-1326 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Sakai A, et al.: "Human parathyroid hormone(1-34)prevents immobilization-related bone loss by regulating bone marrow capacity for bone cells in mice." Transactions of the third combined meeting of orthopaedic research societies of U.S.A., Canada, Europa and Japan. 1320-1326 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 沖本信和、ほか: "ヒト副甲状腺ホルモン(1-34)週一回間欠投与および休薬が卵巣摘除ラット皮質骨の力学強度に及ぼす影響とその組織学的機序" 日本骨代謝学会雑誌. 15・7. 177-181 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Okimoto N, et al.: "Effects of a weekly injection of human parathyroid hormone(1-34)and withdrawal on bone mass, strength, and turnover in mature ovariectomized rats." Bone. 22・5. 523-531 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Sakai A, et al.: "Bone marrow capacity for bone cells and trabecular bone turnover in immobilized tibia after aciatic neurectomy in mice." Bone. 18・5. 479-486 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 酒井昭典、ほか: "続発性骨粗鬆症 不動性骨粗鬆症" THE BONE. 10・2. 91-95 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Sakai A, et al.: "Bone marrow capacity for bone cells and trabecular bone turnover in immobilized tibia after sciatic neurectomy in mice." Bone. 18-5. 479-486 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Sakai A, et al.: "The effects of immobilization on bone marrow cells and trabecular bone turnover. (in Japanese)" THE BONE. 10-2. 91-95 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Okimoto N, et al.: "Effects of a weekly injection of human parathroid hormone (1-34) and withdrwalon bone mass, strength, and turnover in of cortical bone of ovariectomized rats. (in Japanese)" Journal of Japanese Society for Bone and Mineral Research. 15-7. 177-181 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Okimoto N, et al.: "Effects of a weekly injection of human parathyroid hormone (1-34) and withdrwal on bone mass, strength, and turnover in mature ovariectomized rats." Bone. 22-5. 523-531 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Sakai A, et al.: "Experimental model of limitation of physical exercise. (in Japanese)" Clinical Calcium. 8-6. 50-52 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Nakamura T, et al.: "Bone turnover and marrow cells after neurectomy in bone. (in Japanese)" Journal of Japanese Society of Bone Morphometry. 8-1. 25-31 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Sakai A, et al.: "Bone marrow cell development and trabecular bone dynamics after ovariectomy in ddy mice." Bone. 23-5. 443-451 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Sakai A, et al.: "Parathyroid hormone as new agents for osteoporosis. (in Japanese)" Kidney and Metabolic Bone Disease. 11-4. 427-431 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Sakai A, et al.: "Human parathyroid hormone (1-34) prevents immobilization-related bone loss by regulating bone marrow capacity for bone cells in mice." Transactions of the third combined meeting of orthopaedic research societies of U.S.A., Canada, Europe and Japan. 153 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Sakai A, et al.: "Immobilization-related osteoporosis. (in Japanese)" The Journal of Clinical Science. 34-10. 1320-1326 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 酒井昭典: "運動制限モデル実験" Clinical Calcium. 8・6. 50-52 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 中村利孝、ほか: "骨不動化における骨組織動態と骨髄の細胞" 日本骨形態計測学会雑誌. 8・1. 25-31 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Sakai A,et al.: "Bone marrow cell development and trabecular bone dynamics after ovariectomy in ddy mice." Bone. 23・5. 443-451 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 酒井昭典、ほか: "新しい骨作用薬(3)副甲状腺ホルモン(PTH)" 腎と骨代謝. 11・4. 427-431 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Sakai A,et al.: "Human parathyroid hormone(1-34)prevents immobilization-related bone loss by regulating bone marrow capacity for bone cells in mice." Transactions of the third combined meeting of orthopaedic research societies of U.S.A.,Canada,Europe and Japan. 153 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 酒井昭典、ほか: "骨粗鬆症の病態と発症機序(3)不動化と骨粗鬆症" 臨床科学. 34・10. 1320-1326 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 沖本信和、ほか: "ヒト副甲状腺ホルモン(1-34)週一回間欠投与および休薬が卵巣摘除ラット皮質骨の力学強度に及ぼす影響とその組織学的機序" 日本骨代謝学会雑誌. 15・7. 177-181 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Okimoto N,et al.: "Effects of a weekly injection of human parathyroid hormone(1-34)and withdrawal on bone mass,strength,and turnover in mature overietomized rats." Bone. 22・5. 523-531 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] N.Okimoto, et al: "Effects of a weekly injection of human parathyroid hormone(1-34) and withdrawal on bone mass,strength,and turnover in mature ovariectomized rats" Bone. (accepted). (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] 酒井昭典: "卵巣摘出動物からみた骨組織動態の変化と骨髄細胞の分化異常" 日本整形外科学会雑誌(proceedings). 71・8. S1408 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 沖本信和、 ほか: "ヒト副甲状腺ホルモン(1-34)週一回間欠投与および休薬が卵巣摘除ラット皮質骨の力学強度に及ぼす影響とその組織学的機序" 日本骨代謝学会雑誌. 15・4. 177-181 (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] A.Sakai,T.Nakamura,et al: "Bone marrow capacity for bone cells and trabecular bone turnover in immobilized tibia after sciatic neurectomy in mice" Bone. 18・5. 479-486 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 酒井昭典、中村利孝: "不動性骨萎縮" The Bone. 10・2. 91-95 (1996)

    • Related Report
      1996 Annual Research Report

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Published: 1997-04-01   Modified: 2016-04-21  

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