This study analyzed tumor-associated inflammation by assessing the expression of cyclophilin A (CypA) and TNF in samples of kidney tumors of various histological types. It was shown that different histological types of renal cell carcinoma differed by the expression of these proteins. Thus, the highest expression of CypA and TNF was observed in papillary and chromophobe kidney cancer, although no correlation with overall bacterial load was found for these tumors. In the case of clear cell renal cell carcinoma, the expression of proinflammatory factors was observed in only half of the cases and directly correlated with the presence of resident bacteria, serving as a favorable prognostic factor for the disease.
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