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1998 Fiscal Year Final Research Report Summary

Research on experimental allergic mouse engrafted with human lymphocytes from allergic diseases

Research Project

Project/Area Number 09670833
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Pediatrics
Research InstitutionKitasato University

Principal Investigator

KAWANO Yutaka  Kitasato Univ.School of Medicine, Research Associate, 医学部, 助手 (90224815)

Project Period (FY) 1997 – 1998
KeywordsBronchial asthma / remission / mite antigen / T cell clone / interferon-gamma / interleukin 4 / helper T cell / severe combined immunodeficiency mice
Research Abstract

Objective : The majority of asthmatic patients in children is sensitized with Dermatophagoides farinae (Df, mite antigen. Peripheral blood lymphocytes from active patients with asthma produced decreased interferon-gamma (IFN-gamma) and increased interleukin 4 (IL-4) upon stimulation with Df antigen. In contrast, patients in remission have lymphocytes capable of producing high TFN-y and low 1L-4 by modulating the imbalance of helper T lymphocytes. T cell clones (TCC) obtained from patients with bronchial asthma in remission and from healthy individuals were compared with respect to cytokine production.
Methods : TCC were generated by in vitro repetitive stimulation with Df antigen. Interferon-y (IFN-gamma) and interleukin 4 (IL-4) production by these TCC was measured by enzyme-linked immunoassay.
Results : Df-specific TCC were more frequently (5-10%) obtained from patients in remission than from healthy individuals (1-2%). Most TCC from patients in remission produced IL-4 alone (Th2) with a few clones synthesizing high amount of IFN-gamma along with IL-4 (Tho). In contrast, TCC from healthy individuals generated low amount of IFN-gamma and 11-4.
Discussion : Asthmatic patients in remission still have more Df-specific TCC than in healthy individuals in their circulation, although patients in remission showed apparently no sighs of disease. The TCC in patients in remission contains Th2 cells that could exacerbate allergic reaction, which may be suppressed by small numbers of ThO cells producing high titers of IFN-gamma. Transfer of these TCC into severe combined immunodeficiency (SCID) mice might allow the analysis of human allergic disease in terms of remission and recurrence.

  • Research Products

    (6 results)

All Other

All Publications (6 results)

  • [Publications] 川野 豊: "気管支喘息寛解患者及び健康者由来のダニ抗原持異的T細胞クローンの比較" 日本小児科学会誌. 102・3. 326 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Noma Takeshi: "Effect of oxatomide on T cell activation and the production of interferon-γ in mite sevsitive asthma" European Journal of Pharmacology. 343. 239-247 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Noma Takeshi: "heducecl IL-1 production in adolescentsuth with antigen asthnia in remistion" Clinical Experimental Immunology. 113. 10-16 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Kawano, Yutaka: "Comparison of mite antigen-specific T cell clones from asthmatic patients in remission with those from healthy individuals." Japanese J.Pediatrics. 102 (3). 326 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Noma, Takeshi: "Effect of oxatomide on T cell activation and the production of interferon-gamma in mite sensitive asthma." Eur.J.Pharmacology. 343. 239-247 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Noma, Takeshi: "Reduced IL-1 production in adolescents with mite antigen asthma in remission" Clin.Exp.Immunol.113. 10-16 (1998)

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

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Published: 1999-12-08  

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