Functional immunoregulatory T-cell abnormalities in cystic fibrosis patients
- Cite this article as:
- Lahat, N., Rivlin, J. & Iancu, T.C. J Clin Immunol (1989) 9: 287. doi:10.1007/BF00918660
- 26 Views
The role of B cells and regulatory T cells in the reducedin 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 fromPseudomonas 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.