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Beta-2-microglobulin kinetics during paired filtration dialysis
P Kes1, A Zubcić, I Ratković-Gusić
1Department of Nephrology and Dialysis, Sestre Milosrdnice University Hospital, Zagreb, Croatia.
Abstract:
Although the accumulation of beta-2-microglobulin (beta2M) occurs in end-stage renal disease (ESRD) patients prior to the initiation of dialysis, there is increasing evidence that the mode of dialysis treatment plays an important role in the development of amyloidosis. In the present study, a hemofiltration technique that uses both convection and diffusion, with a double chamber hemodialyzer composed of high-flux polysulphone and hemophan (paired filtration dialysis--PFD) was evaluated with regard to the beta2M removal capacity during PFD in 8 stable ESRD patients. PFD resulted in a significant (P < 0.001) beta2M removal during a 210-min dialysis session. The sieving coefficient was calculated to be 0.6 +/- 0.07 at 60 min after the start of PFD. The mean beta2M concentration in the ultrafiltrate was 13.4 +/- 1.6 mg/L, and total quantity cleared by convection alone was 135.9 +/- 12.6 mg/session. These data demonstrate that PFD is a highly efficient, variable convection-diffusion rate mixed depuration technique, that can remove beta2M with a minimal back-filtration risk and without the need of great amounts of special reinfusion solutes.
Insights
Paired filtration dialysis (PFD) effectively removes beta-2-microglobulin (beta2M) in end-stage renal disease patients. This efficient mixed depuration technique minimizes back-filtration risk during dialysis.
Area of Science:
- Nephrology
- Renal Replacement Therapy
- Biomedical Engineering
Background:
- Beta-2-microglobulin (beta2M) accumulates in end-stage renal disease (ESRD) patients.
- Dialysis modality influences amyloidosis development in ESRD patients.
- Efficient beta2M clearance is crucial for managing ESRD complications.
Purpose of the Study:
- To evaluate the beta-2-microglobulin (beta2M) removal capacity of paired filtration dialysis (PFD).
- To assess the efficiency of a mixed convection-diffusion dialysis technique in ESRD patients.
Main Methods:
- Utilized a double-chamber hemodialyzer with high-flux polysulphone and hemophan membranes for PFD.
- Assessed beta2M removal in 8 stable ESRD patients over a 210-minute dialysis session.
- Calculated the sieving coefficient and measured beta2M concentration in ultrafiltrate.
Main Results:
- PFD demonstrated significant beta2M removal (P < 0.001).
- The sieving coefficient for beta2M was 0.6 +/- 0.07 at 60 minutes.
- Mean beta2M concentration in ultrafiltrate was 13.4 +/- 1.6 mg/L, with 135.9 +/- 12.6 mg cleared by convection per session.
Conclusions:
- Paired filtration dialysis (PFD) is a highly efficient technique for beta2M removal.
- PFD offers a variable convection-diffusion rate mixed depuration.
- This method achieves substantial beta2M clearance with minimal back-filtration risk.