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. 1986 Aug;65(2):286–292.

Independence of depressed lectin-dependent cell-mediated cytotoxicity from interleukin 2 production in patients with systemic lupus erythematosus.

A Perl, R González-Cabello, K Onody, I Bodó, P Gergely
PMCID: PMC1542317  PMID: 3491706

Abstract

The relationship of lectin-dependent cell-mediated cytotoxicity (LDCC) to interleukin-2 (IL-2) production was studied in healthy subjects and in patients with systemic lupus erythematosus (SLE). Profoundly depressed levels of LDCC were elicited by peripheral blood mononuclear cells (PBMC) from nine patients with active SLE in comparison to LDCC from seven controls, and eleven inactive SLE donors, using 3H-TdR-prelabelled adherent HEP-2 cells as targets in a 24 h assay with 25 micrograms/ml Con A. In parallel experiments, no individual correlation was found between LDCC activity and IL-2 production for healthy or SLE subjects. Further, no major differences were detected in IL-2 release when the three groups of donors were compared, a tendency observed at the Con A doses (5 and 25 micrograms/ml) and incubation times (24, 48, and 72 h) used to induce IL-2 production. In additional studies, impaired Con A-induced blastogenesis was noted for PBMC from active SLE patients in comparison to the PBMC from the controls or patients with inactive SLE. While strong individual correlation was obtained between blastogenesis and IL-2 secretion in controls and patients with inactive SLE, no such relationship was found in patients with active SLE. While addition of exogenous IL-2 to the cytotoxicity assay considerably enhanced LDCC by healthy donors it failed to improve LDCC by patients with active SLE. These data suggest that depressed LDCC and Con A-induced blastogenesis of patients with active SLE may not be related to impaired IL-2 production but rather to an inherent dysfunction of the effector lymphocytes, including their unresponsiveness to IL-2.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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