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Updated: Jul 26, 2026
12:03
Blue Native Polyacrylamide Gel Electrophoresis (BN-PAGE) for Analysis of Multiprotein Complexes from Cellular Lysates
Published on: February 25, 2011
Testing protein permeability of dialysis membranes using SDS-PAGE
H Mann1, H Melzer, A Al-Bashir
1Institute of Experimental Nephrology, Aachen, Germany. helmut.mann@post.rwth-aachen.de
The International Journal of Artificial Organs
|June 21, 2002
Summary
High-flux dialysis membranes mimic kidney filtration for uremic toxins. However, protein permeability decreases during dialysis sessions, unlike natural kidney function.
Area of Science:
- Nephrology
- Biomaterials Science
- Analytical Chemistry
Background:
- Dialysis membranes aim to replicate glomerular membrane permeability for effective uremic toxin removal.
- Evaluating high-flux dialysis membrane permeability is crucial for mimicking natural kidney function.
Purpose of the Study:
- To assess the protein permeability of high-flux dialysis membranes during routine dialysis.
- To compare the permeability characteristics of different dialysis membranes against the glomerular membrane.
Main Methods:
- Sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) was used to analyze dialysate filtrate.
- Silver staining and laser densitometry were employed for precise protein quantification.
Main Results:
- Dialysate filtrate protein profiles resembled the glomerular membrane, including proteins like albumin and IgG.
- Significant variations in membrane permeability were observed, influenced by cut-off, charge, and adsorption properties.
- Protein permeability across all tested membranes diminished during a single dialysis session.
Conclusions:
- High-flux dialysis membranes exhibit protein permeability similar to glomerular membranes, but are modulated by membrane characteristics and dialysis duration.
- Unlike the glomerular membrane, investigated dialysis membranes show a functional decrease in protein permeability over time.
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