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Transparent Janus Nanofibers for Use in Blood-Contact Applications.

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Uremic toxins in kidney failure increase protein adsorption on novel blood-contacting materials (PCL/EVOH nanofibers) without causing clotting. This finding is crucial for developing better dialysis alternatives and personalized treatments.

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Area of Science:

  • Biomaterials Science
  • Nephrology
  • Hemostasis

Background:

  • Kidney failure leads to uremic toxin buildup, disrupting blood homeostasis.
  • Protein adsorption at blood-material interfaces influences host responses.
  • Developing advanced dialysis membranes requires understanding these interactions.

Purpose of the Study:

  • To investigate the impact of uremic toxins on plasma protein adsorption to Janus membranes (PCL/EVOH nanofibers).
  • To assess clot formation in the presence of these toxins and materials.

Main Methods:

  • Created a human plasma system with 26 uremic toxins at concentrations mimicking kidney failure.
  • Analyzed protein adsorption and clot formation on polycaprolactone (PCL)/ethylene vinyl alcohol (EVOH) nanofiber meshes using normal and toxin-treated plasma.

Main Results:

  • Uremic toxins significantly enhanced protein adsorption onto PCL/EVOH nanofiber meshes.
  • No significant increase in clot formation was observed, suggesting a lack of enzymatic activation.
  • Unmodified PCL/EVOH surfaces may elicit a strong humoral immune response.

Conclusions:

  • Uremic toxins alter protein adsorption profiles on PCL/EVOH nanofibers.
  • These materials show potential for dialysis applications but may require surface modification to mitigate immune responses.
  • Understanding these interactions is vital for personalized kidney failure treatments.