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分离出的IgG和IgM抗γ球蛋白(类风湿因子)的免疫学特性。

Immunological properties of isolated IgG and IgM anti-gamma-globulins (rheumatoid factors).

作者信息

Bianco N E, Dobkin L W, Schur P H

出版信息

Clin Exp Immunol. 1974 May;17(1):91-101.

Abstract

Anti-gamma-globulins of the IgG and IgM classes have been isolated from sera of normal individuals and from patients with osteoarthritis, rheumatoid arthritis and juvenile rheumatoid arthritis. All of the isolated antibodies gave precipitin curves with heat-aggregated, reduced and alkylated gamma-globulin. IgM anti-gamma-globulins gave a positive latex fixation test at 4°C and 37°C while IgG anti-gamma-globulins generally gave a positive test only at 4°C. Anti-gamma-globulins from normals did not fix complement but IgG and IgM anti-gamma-globulins from rheumatoids fixed complement to a similar degree. This complement fixation could account at least in part for the diminished complement levels seen in many rheumatoid synovial effusions.

摘要

已从正常个体以及骨关节炎、类风湿性关节炎和青少年类风湿性关节炎患者的血清中分离出IgG和IgM类抗γ球蛋白。所有分离出的抗体与热聚集、还原和烷基化的γ球蛋白均产生沉淀素曲线。IgM抗γ球蛋白在4°C和37°C时乳胶固定试验呈阳性,而IgG抗γ球蛋白通常仅在4°C时呈阳性。正常人的抗γ球蛋白不固定补体,但类风湿患者的IgG和IgM抗γ球蛋白固定补体的程度相似。这种补体固定至少可以部分解释许多类风湿性滑膜积液中补体水平降低的现象。

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