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Biomedical subjects

V N Nikulin

Publications and source records attributed to V N Nikulin.

6 recordsLinked to original sources

[Changes in the myeloperoxidase and acid phosphatase activities in human peripheral blood neutrophils with the cells stimulated in vitro].

In four series of experiments human peripheral blood neutrophils were found capable of synthetizing the active forms of such enzymes as myeloperoxidase and acid phosphatase after stimulation with opsonized zymosan, and the optimum conditions for testing the synthetizing activity of neutrophils were established. The examination of 39 practically healthy donors revealed an approximate equilibrium between the synthesis of the active forms of the enzyme and its excretion from the cell after this cell was activated. Considerable changes in the enzymatic activity of peripheral blood neutrophils were found in patients with yersiniosis, chronic herpes, chronic bronchitis and AIDS-associated complex. The possibility of a deficient enzymatic activity in some patients was suggested.

AIDS-Related Complex↗

[Indicators of oxygen-dependent metabolism of peripheral blood neutrophils in the differential diagnosis of bacterial and viral infections].

Oxygen-dependent metabolism of peripheral neutrophils was compared for viral hepatitis and acute yersiniosis patients. The metabolism inhibition was seen in both the diseases with lower values for viral hepatitis. Neutrophil function was dependent on the disease gravity. Its recovery went in parallel with other clinical and laboratory signs of convalescence. A luminol-dependent chemiluminescence test is proposed for differential diagnosis of viral hepatitis with jaundices in generalized bacterial infection.

Acute Disease↗

[The functional activity of the peripheral blood neutrophils in patients with chronic brucellosis].

The functional activity of peripheral blood neutrophils was studied by their main functional and metabolic parameters. The group of chronic brucellosis patients under study included 32 patients. The control group consisted of 35 practically healthy donors. The complex of methods, used for the evaluation of the functional activity of peripheral blood neutrophil leukocytes, included the determination of adhesion, activity of nitro blue tetrazolium reduction, enzymatic activity of myeloperoxidase and acid phosphatase, the level of cation protein and the production of active forms of oxygen (AFO) by these cells. Chronic brucellosis patients were found to have disturbances in the adhesive capacity of phagocytizing cells and the production of highly bactericidal AFO. These disturbances in the activity of phagocytizing cells may be one of the mechanisms contributing to incomplete phagocytosis in chronic brucellosis in humans.

Adolescent↗