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Selective capture of anti‐A antibodies from human blood using a novel integrated bead and hollow fiber module
Author(s) -
Alikhani Azadeh,
Federspiel William J.
Publication year - 2012
Publication title -
journal of biomedical materials research part b: applied biomaterials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.665
H-Index - 108
eISSN - 1552-4981
pISSN - 1552-4973
DOI - 10.1002/jbm.b.32776
Subject(s) - plasmapheresis , immunoadsorption , antibody , hematocrit , transplantation , fiber , chemistry , abo blood group system , titer , chromatography , biomedical engineering , materials science , immunology , medicine , surgery , composite material
Anti‐A/B antibody removal from blood in the peritransplantation period facilitates ABO‐incompatible transplantation and significantly increases the donor pool. We have been developing an anti‐A/B immunoadsorption device (BSAF), compatible with whole blood perfusion. The BSAF is based on integrated microfiltration hollow fibers with antibody capturing beads uniformly distributed within the fiber interstitial space. In this study we fabricated BSAF prototypes, appropriately scaled down from a conceptual clinical scale device. We then, for the first time, measured the time course of anti‐A capture from blood samples recirculating through the scaled down BSAF devices. We observed a significant reduction in IgM (96% ± 5%, n = 5, p < 0.001), and IgG (81% ± 18%, n = 5, p < 0.05) anti‐A antibody titers within 2 h. We did not observe a significant change between the initial and final values of hematocrit, total plasma protein concentration, plasma free hemoglobin concentration, and anti‐B antibody titer over five experiments. In conclusion we showed that the BSAF modules selectively removed anti‐A antibodies from blood in a simple one step process, without requiring a separate plasmapheresis unit. © 2012 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 2012.