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. 1988 Mar;71(3):439–444.

Diminished response to an inhibitory signal in lymphocytes from patients with systemic lupus erythematosus.

M Salata 1, J Golbus 1, B C Richardson 1
PMCID: PMC1541662  PMID: 3260156

Abstract

Systemic lupus erythematosus is an autoimmune disease characterized by B-cell hyperactivity, resulting in polyclonal hypergammaglobulinaemia. One mechanism potentially resulting in excessive immunoglobulin synthesis is a diminished response to inhibitory signals. To test this hypothesis, anti-IgG antisera was used to inhibit pokeweed mitogen activation of cultured lymphocytes from lupus patients and controls. Inhibition of IgG secretion by B cells from lupus patients required more than 75 times as much anti-IgG as normal controls (P less than 0.005), indicating that lupus lymphocytes are hyporesponsive to this inhibitory signal. Similar studies with DR3+ controls demonstrated that diminished responsiveness to anti-IgG inhibition may in part be associated with the HLA-DR3 allele. Defects in this inhibitory mechanism may play a role in the B-cell hyperactivity observed in lupus.

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Selected References

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