Aim of the studyEnd stage renal disease (ESRD) patients on chronic haemodialysis (HD) are immuno-compromised and prone to infection. Toll-like receptors (TLRs) play a role as both primary sensors of pathogen invasion and activators of inflammatory reaction. To test if the immune impairment in HD patients is connected with the defective expression of the neutrophil TLRs, we aimed to examine their expression and chosen inflammatory indices.Material and methodsWe tested CD14, TLR4, and TLR9 expressions on neutrophils using flow cytometry. Soluble CD14, C-reactive protein (CRP), and mannose-binding lectin (MBL) concentrations were tested using the ELISA method in 31 ESRD patients on chronic haemodialysis programs and in 17 healthy control subjects.ResultsNeutrophil TLR4 and TLR9 expressions did not differ significantly compared to the controls. The ESRD patients had markedly increased CRP and sCD14 levels alongside decreased MBL concentrations and neutrophil CD14 expression. The TLR4 expression correlated well with both TLR9 and CD14 neutrophil expressions; however, the increased CRP in the blood did not correlate with the MBL concentration or TLR expression.ConclusionsThe chronic program of haemodialysis and biochemical disorders in ESRD patients result in a low-grade chronic inflammation with no significant impact on the expression of neutrophil TLR4 and TLR9.
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