Abstract
Serum concentrations of E-selectin (CD62E), P-selectin (CD62P), ICAM-1 (CD54) and interleukin 6 were investigated in acute leukaemia patients with chemotherapy-induced leucopenia and complicating bacterial infections. Serum concentrations of both E-selectin and P-selectin were decreased in the leucopenic patients without infections when compared with levels before chemotherapy; and serum concentrations of both E-selectin and P-selectin showed a further decrease during complicating bacterial infections. In contrast to the leukaemia patients, previously healthy individuals with meningococcal disease showed markedly elevated serum concentrations of E-selectin and normal levels of P-selectin during infection. Serum concentrations of ICAM-1 and interleukin 6 increased during bacterial infections in the acute leukaemia patients with chemotherapy-induced leucopenia. The alterations in serum concentrations of soluble adhesion molecules and interleukin 6 reversed when clinical signs of bacterial infections resolved during antibiotic therapy. Our results demonstrate that acute leukaemia patients with chemotherapy-induced cytopenia show altered levels of both soluble adhesion molecules and interleukin 6 during complicating bacterial infections.
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