Abstract:
:Immunohistological techniques were used to identify activated T lymphocytes within the synovial membrane of patients with rheumatoid arthritis, using the monoclonal antibody (MoAb) RFT2, which identifies a 40-k dalton molecule preferentially expressed by T blasts or activated cells. Using this reagent together with a monoclonal 'cocktail' that stains all T cells, cell counts on consecutive sections of rheumatoid synovium revealed that up to 50% T lymphocytes were RFT2+ (range 9.3-50.2%, mean 25.4). Subsequent analysis using combination immunofluorescence demonstrated that over 90% of these activated cells were of the T4+ subset. Furthermore all these cells appeared to be Leu8-, suggesting that the activated population were exclusively 'true helpers' and not suppressor inducers. Studies indicated that 50% of the RFT2+ cells were positive with anti-Tac MoAb. Comparisons with tissues from other arthropathies demonstrated that this relatively high proportion of RFT2+ cells was a feature restricted to rheumatoid arthritis, although biopsies from patients with psoriatic arthritis and ankylosing spondylitis also contained activated cells. Biopsies of Reiter's syndrome, osteo-arthritis, and pigmented villonodular synovitis contained no activated cells, nor were any seen in sections of normal synovium. The presence in rheumatoid synovial membrane of activated T cells which are only of the T4+, Leu8- subset adds weight to the suggestion that local immunoregulatory dysfunction contributes to the chronic inflammation of rheumatoid arthritis.
journal_name
Scand J Immunoljournal_title
Scandinavian journal of immunologyauthors
Poulter LW,Duke O,Panayi GS,Hobbs S,Raftery MJ,Janossy Gdoi
10.1111/j.1365-3083.1985.tb01931.xsubject
Has Abstractpub_date
1985-12-01 00:00:00pages
683-90issue
6eissn
0300-9475issn
1365-3083journal_volume
22pub_type
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journal_title:Scandinavian journal of immunology
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journal_title:Scandinavian journal of immunology
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journal_title:Scandinavian journal of immunology
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更新日期:1990-12-01 00:00:00
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更新日期:2018-06-09 00:00:00
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journal_title:Scandinavian journal of immunology
pub_type: 杂志文章
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更新日期:1994-04-01 00:00:00
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journal_title:Scandinavian journal of immunology
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更新日期:2001-04-01 00:00:00
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journal_title:Scandinavian journal of immunology
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更新日期:1986-03-01 00:00:00
abstract::Human mast cell carboxypeptidase (hMC-CP) is a unique product of mast cells. Unlike tryptase and chymase, its potential function and expression in diseased conditions remain largely unknown. To develop an assay for hMC-CP, the recombinant fusion protein of hMC-CP and purified native skin hMC-CP was prepared, and two n...
journal_title:Scandinavian journal of immunology
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journal_title:Scandinavian journal of immunology
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更新日期:1989-10-01 00:00:00