Phenotype of urine sediment cells were studied in patients with bladder cancer depending on the cancer stage and recurrence prognosis. In T1N0M0 stage, the number of lymphocytes decreased, in T2N0M0 stage, the most pronounced shift was an increase in the number of erythrocytes. Irrespectively of the disease stage, we observed increased number of innate immunity cells and cells that inhibit antitumor immunity in the composition of the leukocyte fraction of urine sediment cells. At T1N0M0 stage, the epithelial-endothelial fraction was characterized by increased content of cells expressing CD13 marker (responsible for tumor growth and metastasis) and reduced number of cells expressing CD15 marker (responsible for intercellular adhesion). In patients developing relapse of bladder cancer, the number of lymphocytes was decreased in urine sediment cells and the number of epithelial and endothelial cells expressing CD13 marker was increased.
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