Background. Number of patients treated by general practitioners with various immunomodulatory drugs has recently increased. Effects of such medication on the immune system were not usually monitored. The aim of our work was to evaluate effect of selected immunomodulatory drugs on the phagocytic and metabolic activities of the phagocytes. Methods and Results. 51 patients (18 males and 33 females) of the average age 36 years with repeating respiratory, mycotic and herpetic infections were investigated. Immunomodulatory treatment included: Decaris (Lavamizolum), Isoprinosine (Methisoprinolum), Imudon (Lysatum bacteriale mixtum), Biostim (Klebsiella pneumoniae), and Immodin (Leukocyti dialysati lyophylysatum). Before and after treatment all patients underwent basic immunological examination IgG, IgA, IgM, C3, C4 complement components, PEG, CD3, CD4, CD8 and CD19). Phagocytotic activity was estimated by means of FAGO MSHP test with HEMA particles and by chemiluminiscence test. Chemiluminiscence was measured using ML 3000 Microtiter Plate Luminometer (Dynex). 26 healthy individuals of the corresponding age were the controls. Results were statistically evaluated by Student’s t-test. Significant increase of the cellular metabolic activity was found in Decaris and Immodin treated patients (P<0.001). Conclusions. Chemiluminiscence test, which evaluates the metabolic activity of phagocytes, can be used for the accurate laboratory monitoring of the effects of some immunomodulatory drugs on the natural immunity of patients.

        Key words: chemiluminiscence test, imunomodulatory drugs, phagocytes, cellular metabolic activity.