Chemiluminescence by Polymorphonuclear Leukocytes from Patients with Active Bacterial Infection

Abstract

Polymorphonuclear leukocytes of 18 patients during 19 episodes of active bacterial infection produced increased chemiluminescence (mean ± standard error [SE], 56.3 ± 4.4 × 10³ cpm) when the production was compared to that of 29 uninfected controls (35.3 ± 2.4 × 103 cpm; P < 0.01). Chemiluminescence production remained increased with persistent infection but fell to the levels of controls with appropriate therapy. Phagocytic uptake as determined with radiolabeled bacteria was increased, and chemotactic responsiveness was markedly enhanced in the patients (mean index ± SE, 260 ± 51) when these responses were compared with those of controls (77 ± 18). Chemiluminescence and chemotactic activity correlated in the patients with bacterial infection (r = 0.76), but one function did not appear to depend upon the intactness of the other. The ratio of cyclic guanosine 3′,5′-phosphate to cyclic adenosine 3′,5′-phosphate in the polymorphonuclear leukocytes of patients with infections (mean ± SE, 0.102 ± 0.00(8) was also significantly higher than in controls (0.067 ± 0.007). These data indicate that the polymorphonuclear leukocytes of the majority of patients with active bacterial infection are in an activated state both functionally and metabolically.