Document Detail


Inhibition of human helper T cell function in vitro by D-penicillamine and CuSO4.
MedLine Citation:
PMID:  6965944     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The effect of d-penicillamine (Pen) and mixtures of Pen and copper sulfate on the capacity of normal human peripheral blood mononuclear cells (PBM) to generate immunoglobulin-secreting cells (ISC) in response to the T-cell-dependent polyclonal B-cell activators pokeweed mitogen (PWM) and staphylococcal protein A (SPA) was examined. PBM obtained from normal individuals were incubated for 1-2 h at 37 degrees C with medium alone, Pen, CuSO(4), or a mixture of Pen and CuSO(4). After washing, the cells were incubated for 6-7 d with PWM or SPA and then, with a reverse hemolytic plaque assay, assayed for the number of ISC generated. Preincubation of PBM with either Pen (100 mug/ml) or CuSO(4) (2 mug/ml) did not alter the subsequent capacity of the cells to generate ISC in response to PWM or SPA. In contrast, responsiveness to both mitogens was nearly abolished when PBM were similarly preincubated with a mixture of Pen and CuSO(4). Inhibition of responsiveness could not be ascribed to cell death, carry-over of the inhibitors, or an alteration in the concentration of PWM or the length of incubation yielding maximum responses. Co-culture experiments demonstrated that Pen and CuSO(4) preincubation had not caused augmented suppressor cell function. Experiments in which PBM were separated into adherent and nonadherent populations indicated that Pen and CuSO(4) preincubation inhibited the responsiveness of the nonadherent cells but did not alter the accessory cell function of monocytes. To determine whether Pen and CuSO(4) preincubation effected T- or B-cell function, PBM were separated into B- and T-cell-enriched populations, individually preincubated with Pen and CuSO(4), and then co-cultured with PWM. The results indicated that Pen and CuSO(4) markedly inhibited helper T-cell function and had little effect on the capacity of B cells to generate ISC. The observation that in the presence of CuSO(4) Pen inhibits helper T-cell activity may, in part, explain the therapeutic efficacy of Pen in rheumatoid arthritis and especially the capacity of Pen therapy to decrease antiglobulin titers in treated patients.
Authors:
P E Lipsky; M Ziff
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Publication Detail:
Type:  In Vitro; Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  The Journal of clinical investigation     Volume:  65     ISSN:  0021-9738     ISO Abbreviation:  J. Clin. Invest.     Publication Date:  1980 May 
Date Detail:
Created Date:  1980-06-16     Completed Date:  1980-06-16     Revised Date:  2009-11-18    
Medline Journal Info:
Nlm Unique ID:  7802877     Medline TA:  J Clin Invest     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1069-76     Citation Subset:  AIM; IM    
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MeSH Terms
Descriptor/Qualifier:
Adult
B-Lymphocytes / drug effects,  immunology
Copper / pharmacology*
Humans
Immunoglobulins / secretion
Penicillamine / pharmacology*
Pokeweed Mitogens / pharmacology
Sulfates / pharmacology
T-Lymphocytes / drug effects*,  immunology
Chemical
Reg. No./Substance:
0/Immunoglobulins; 0/Pokeweed Mitogens; 0/Sulfates; 52-67-5/Penicillamine; 7440-50-8/Copper
Comments/Corrections

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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