Removal of Protein-Bound Solutes by Dialysis
Principal Investigator: Timothy Meyer
Affiliation: Stanford University
Abstract: Solutes that bind to plasma proteins are poorly cleared by conventional hemodialysis. Accumulation of such solutes may contribute to residual uremic illness in dialysis patients. The proposed studies will measure protein-bound solute clearances and test means for reducing protein-bound solute levels in dialysis patients. The first aim is to reduce protein-bound solute levels in patients on conventional hemodialysis. The proposed studies will test whether levels of protein-bound solutes can be reduced without any increase in dialysis time by raising the dialyzer mass transfer area coefficient and dialysate flow. The second aim is to determine how different dialysis prescriptions effect protein-bound solute levels in patients on daily nocturnal hemodialysis (DNHD). The proposed studies will test the prediction that the clearance of protein-bound solutes during DNHD can be varied independent of urea clearance, and that it can be increased by increasing dialysate flow. The third aim is to measure protein-bound solute levels in subjects enrolled in the Frequent Hemodialysis Network (FHN) trial. The proposed ancillary study to the FHN will provide a unique opportunity to relate protein-bound solute levels to other chemical parameters and indices of well-being in a large group of hemodialysis patients.
Funding Period: 2005-09-01 - 2010-08-31
more information: NIH RePORT
- Downloadable computer models for renal replacement therapyJ L Walther
Department of Medicine, VA Palo Alto HCS and Stanford University, Palo Alto, California 94304, USA
Kidney Int 69:1056-63. 2006..The program calculates the time-averaged solute concentration and provides a graphic display of the solute concentration profile through a week-long interval...
- Increasing the clearance of protein-bound solutes by addition of a sorbent to the dialysateTimothy W Meyer
Department of Medicine, VA Palo Alto HCS, Palo Alto, CA 94303, USA
J Am Soc Nephrol 18:868-74. 2007..These results suggest that as an adjunct to conventional hemodialysis, addition of sorbents to the dialysate could increase the clearance of protein-bound solutes without greatly altering the clearance of unbound solutes...
- UremiaTimothy W Meyer
Stanford University School of Medicine, Veterans Affairs Palo Alto Health Care System, Palo Alto, CA, USA
N Engl J Med 357:1316-25. 2007
- Removal of the protein-bound solutes indican and p-cresol sulfate by peritoneal dialysisNhat M Pham
Department of Medicine, VA Palo Alto Health Care System, and Stanford University, Palo Alto, California, USA
Clin J Am Soc Nephrol 3:85-90. 2008..Protein-bound solutes are poorly cleared by peritoneal dialysis. We examined the hypothesis that plasma concentrations of bound solutes would therefore rise as residual renal function is lost...
- Coated carbon hemoperfusion provides limited clearance of protein-bound solutesDiana C Dinh
Department of Medicine, VA Palo Alto HCS and Stanford University, Palo Alto, CA, USA
Artif Organs 32:717-24. 2008..These results indicate that hemoperfusion over coated granular carbon provides limited clearance of protein-bound solutes...
- Effect of increasing dialyzer mass transfer area coefficient and dialysate flow on clearance of protein-bound solutes: a pilot crossover trialFrank J G Luo
Department of Medicine, VA Palo Alto HCS and Stanford University, Palo Alto, CA 94303, USA
Am J Kidney Dis 53:1042-9. 2009....