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J Clin Immunol. 1989 Jul;9(4):287-95.

Functional immunoregulatory T-cell abnormalities in cystic fibrosis patients.

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  • 1Immunology Unit, Carmel Hospital, Haifa, Israel.

Abstract

The role of B cells and regulatory T cells in the reduced in vitro IgG synthesis of cystic fibrosis (CF) patients was studied. Intact proportion, proliferation, and differentiation of B cells and reduced suppressor and helper T-cell function were found. To explore the T-cell defects further, CF sera or supernatant derived from Pseudomonas aeruginosa cultures (PA supernatant) was added to the relevant T helper- and suppressor-cell assays. Both CF sera derived from PA-positive patients and PA supernatant interfered with the appearance of interleukin 2 (IL-2) receptors and with the functional enhancement caused by exogenously added IL-2. PA-negative CF patients, however, also had functional T-cell defects and inhibitory sera, but these sera did not affect IL-2 pathways. Thus different serum factors and intrinsic T-cell defects in CF patients are suggested.

PMID:
2527866
[PubMed - indexed for MEDLINE]
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