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1991 Fiscal Year Final Research Report Summary

Expression of Adherence Molecules on Neutrophils in RA Synovium

Research Project

Project/Area Number 02670659
Research Category

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

Allocation TypeSingle-year Grants
Research Field Orthopaedic surgery
Research InstitutionKyushu Uniersity

Principal Investigator

MIYAHARA Hisaaki  Faculty of Medicine, Kyushu University Assistant, 医学部, 助手 (10209934)

Co-Investigator(Kenkyū-buntansha) MOHTAI Masaaki  Faculty of Medicine, Kyushu University Resident, 医学部, 医員
HOTOKEBUCHI Takao  Faculty of Medicine, Kyushu University Assistant, 医学部, 助手 (40190219)
Project Period (FY) 1990 – 1991
Keywordsrheumatoid arthritis / ICAM-1 / HLA-DQ / adhesion molecules / collagen-induced arthritis / G-CSF / neutrophils
Research Abstract

1) Synovial tissues from inflamed joints of patients with rheumatoid arthritis and non-inflamed joints of patients with other diseases were examined for activation of vascular endothelial cells ; endothelial cells were examined for ICAM-1 expression or HLA-DQ antigen expression using immunohistologic techniques, and in situ quantification of ICAM-1 molecules was made using an immunogold method. In non-inflamed synovium, all of the endothelial cells were morphologically flat and high endothelial venutes could not be seen. Immunohistochemistry revealed that ICAM-1 molecules were expressed in approximately half number of endothelial cells. In contrast, in rheumatoid synovium, many endothelial cells altered to resemble high endothelial venutes and most of them expressed ICAM-1 on their surfaces. Immunoelectron microscopic analysis using immunogold method also revealed that ICAM-1 expression was increased in rheumatoid synovium. It was suggested that enhanced leukocytes adhesion to ondothel … More ial cells would occur in rheumatoid synovium in response to the increase of ICAM-1 exprcssion. On the other hand, HLA-DQ antigen expression was not detected on endothelial cells in rheumatoid or non-inflamed synovium. Further work is needed to define the expression of HLA-DQ antigen.
2) The role of neutrophils in the induction of passive arthritis with anti-type II collagen antisera was investigated. In cyclophosphamide-induced neutropenic rats, swelling and inflammation associated with the arthritic response were significantly reduced. Admninistration of 250 mug/kg of granulocyte colony-stimulating factor (G-CSF) to neutropenic rats for 7 consecutive days from the day afler cyclophosphamide injection resulted in the recovery of peripheral blood neutrophil count and the significant increase of the incidence and the severity of passive arthritis. Further study demonstrated that a prior administration of 250 mug/kg of G-CSF to naive rats for 3 consecutive days resulted in the significant enhancement of passive arthritis. It was suggested that neutrophils played an important role in the induction of passive arthritis. Less

  • Research Products

    (8 results)

All Other

All Publications (8 results)

  • [Publications] Hisaaki Miyahara: "Comparative Studies of the Effects of FK506 and Cyclosporin A on Passively Transferred Collagen-Induced Arthritis in Rats" Clinical Immunology and Immunopathology. 60. 278-288 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 宮原 寿明: "実験的関節炎(コラ-ゲン関節炎/アジュバント関節炎)" 臨床免疫. 23. 1024-1033 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Hisaaki Miyahara: "The Role of Neutrophils in the Induction of Passively Transferrd Collagen-Induced Arthritis in Rats"

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 犀川 勲: "ILー1誘導関節炎におよぼすGーCSFの影響" 日本整形外科学会雑誌. 65. S1157 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Hisaaki Miyahara: "Comparative Studies of the Effect of FK506 and Cycloporin A on Passively Transferred Collagen-Induced Arthritis in Rats" Clin Immunol. Immunopathol.60. 278-288 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Hisaaki Miyahara: "Experimental Arthritis (Collagen-Induced Arthritis/Adjuvant-Induced Arthritis)" Clin Immunol.23. 1024-1033 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Isao Saikawa: "The Effect of G-CSF on the Development of IL-1-Induced Arthritis in Rats" J. Jpn. Orthop. Assoc.65. S1157

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Hisaaki Miyahara: "The Role of Neutrophils in the Induction of Passively Transferred Collagen-Induced Arthritis in Rats"

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1993-03-16  

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