In vitro clearance and hemocompatibility assessment of ultrathin nanoporous silicon membranes for hemodialysis applications using human whole blood.

Abstract:

BACKGROUND/AIMS:Recent advances in nanotechnology have made it possible to mass-produce ultrathin silicon membranes with pore sizes in the range of nanometers. In this study, we investigate the possibility of employing ultrathin nanoporous silicon membranes with pore diameters of 5 and 20 nm for dialysis of human whole blood by performing in vitro clearance and hemocompatibility assessments. METHODS:A mini blood dialyzer is fabricated by mounting nanoporous silicon membranes on a Teflon structure. Clearance is calculated based on the concentration of sodium, chloride, ionized calcium, total CO2, glucose, creatinine and hematocrit measured before and after dialysis. Blood activation is assessed by flow cytometry. RESULTS:Blood contact with the nanoporous membranes induces considerable leukocyte activation. Coating of the membranes with polyethylene glycol significantly improves hemocompatibility without blocking the nanopores. CONCLUSION:Silicon nanoporous membranes are potential candidates for fabrication of miniaturized blood dialyzers. Their mechanical strength and hemocompatibility can be further improved.

journal_name

Blood Purif

journal_title

Blood purification

authors

Ahmadi M,Gorbet M,Yeow JT

doi

10.1159/000350613

subject

Has Abstract

pub_date

2013-01-01 00:00:00

pages

305-13

issue

4

eissn

0253-5068

issn

1421-9735

pii

000350613

journal_volume

35

pub_type

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