Related Experiment Videos
Cytokine production in haemodiafiltration: a multicentre study
V Panichi1, S De Pietro, B Andreini
1Internal Medicine, University of Pisa, Italy.
Summary
Long-term dialysate backfiltration, even with low contamination, can increase intracellular cytokines (interleukin-1 receptor antagonist and interleukin-1beta) in haemodialysis patients. This highlights the importance of improving dialysate quality and reducing backfiltration.
Area of Science:
- Nephrology
- Immunology
- Biochemistry
Background:
- Bacterial contamination of dialysate is linked to increased cytokine production in haemodialysis.
- This study investigates the long-term effects of dialysate backfiltration on intracellular cytokine levels.
Purpose of the Study:
- To test the hypothesis that prolonged exposure to dialysate backfiltration enhances intracellular cytokines.
- To compare cytokine levels in patients undergoing different haemodiafiltration modalities and standard haemodialysis.
Main Methods:
- Compared intracellular cytokine concentrations (IL-1RA, IL-1β) in chronic uraemic patients across various haemodiafiltration and haemodialysis groups over one year.
- Assessed dialysate contamination using Limulus Amebocyte Lysate (LAL) and peripheral mononuclear cell/IL-1β assays.
Main Results:
- Significant increases in intracellular IL-1RA and IL-1β were observed after 8 months in patients with backfiltration compared to those without.
- A two- to threefold increase in post/predialysis cytokine concentration ratios was noted in patients with backfiltration.
- Dialysate contamination levels were found to be moderate-to-low.
Conclusions:
- Dialysate backfiltration, even with moderate-to-low contamination, can enhance cytokine synthesis over the long term.
- Strategies to improve dialysate quality and minimize backfiltration are crucial for haemodialysis patients.