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Several cytokines have been indicated to be significantly involved in urological diseases. Interleukin 17A (IL-17A) and interleukin 23 (IL-23) have recently received attention for their involvement in inflammatory diseases and cancers. The aim of the study was to show changes in the level of pro-inflammatory interleukins IL-17A and IL-23 in patients with bladder cancer (BC) and selected urological diseases. An important cognitive aspect was to study the interdependencies between the studied interleukins and to assess their diagnostic value for such diseases. The material for the study was urine sample from patients with BC, urinary tract infection (UTI), urolithiasis, benign prostatic hyperplasia (BPH), US (urethral stricture), which was compared to the urine sample of healthy people without urological disorders. Interleukin concentrations were measured by the immunoenzymatic method. The levels of IL-17A and IL-23 in the urine of patients with BC, UTI, BPH and US were significantly higher compared to the control group. Statistically significant differences were found in the level of both interleukins compared to the control group in all diseases except urolithiasis. IL-17A and IL-23 correlated with each other in patients with all urological diseases except urolithiasis. The results of the conducted studies showed that selected urological diseases changed the levels of IL-17A and IL-23 in the urine of patients. The observations made confirmed the participation of these interleukins in the course of the urological diseases, especially in BC, and allowed to classify them as potentially useful parameters for diagnostic purposes.
Participation of anti-inflammatory interleukin-13 (IL-13) in the process of carcinogenesis was well studied. Angiogenesis plays a key role in the process of tumour growth and metastasis. Higher expression of angiogenin (ANG) have been proven in many types of cancers. The aim of the study was to more fully understand the significance of plasma IL-13 as an immunomodulator and ANG as a stimulator of the angiogenesis process in patients with bladder cancer (BC) and to investigate the relationship between parameters. These parameters were examined in the group of BC patients and in subgroups of BC depending on clinical stage: non-muscle invasive bladder cancer (NMIBC), muscle invasive bladder cancer (MIBC), histopathologic malignancy low grade (LG), high grade (HG) and in primary and recurrent BC. The level of IL-13 and ANG in the plasma of BC patients and controls were measured by enzyme-linked immunosorbent assay. All calculations were done using the STATISTICA 13.3 (TIBCO software Inc.). Plasma levels of IL-13 and ANG were significantly higher in BC patients and in all patient subgroups examined than in the controls (p < 0.001). A negative significant correlation was found between ANG and IL-13 levels in BC-patients. Based on the receiver operating characteristic curves (ROC), IL-13 had good diagnostic value in BC. The presented results may suggest a relationship between angiogenesis and inflammation in the pathogenesis of bladder cancer and the development of this disease. With the increase of IL-13 level in BC-patients plasma, the ANG level decreased.
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