Antigen-specific suppressor cell activity in procainamide therapy

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Immunomodulatory effect of procainamide in man. Inhibition of human suppressor T-cell activity in vitro.

Procainamide (PA) induces the production of a number of autoantibodies in a high proportion of treated individuals and in some a syndrome closely resembling systemic lupus erythematosus. The mechanism underlying this action of PA is unclear. To examine the possibility that PA might induce autoantibody formation by altering normal immunoregulatory mechanisms, the action of this drug on an in vit...

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Suppressor-cell induction in vitro. IV. Target of antigen-specific suppressor factor and its genetic relationships

Antigen-specific suppressor factor produced by metabolically active in vitro-induced suppressor cells, upon further antigenic stimulation, act on nylon wool nonadherent, Ly-2-negative target cells within helper cell population, resulting in suppression of both the IgM and IgG antibody responses. Thus the target is an Ly-1+ T cell, possibly the helper cell. All the mouse strains tested so far ha...

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Carrier-specific suppressor T cells can suppress antibody secretion by high avidity IgG plaque-forming cells (PFC) within 90 min in vitro. This process can be blocked by the inclusion of soluble carrier in the cell mixture or by the exposure of target cells to anti-carrier antibodies or pronase. Moreover, suppression can be augmented by PFC exposure to the soluble hapten-carrier conjugate. Fina...

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ژورنال

عنوان ژورنال: Arthritis & Rheumatism

سال: 1982

ISSN: 0004-3591,1529-0131

DOI: 10.1002/art.1780250223