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Author Spotlight: Development of Homogeneous κ-Carrageenan Sub-Microgel Baths for High-Resolution 3D Bioprinting
Published on: May 3, 2024
Carboxymethyl kappa carrageenan polyelectrolyte multilayers as blood contacting surfaces
Liszt Y C Madruga1,2, Somayeh Baghersad3, Paulo C F Câmara4
1Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, CO 80526 USA.
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This research introduces carboxymethyl kappa-carrageenan-chitosan polyelectrolyte multilayers as a promising and sustainable alternative to heparin, used in surface treatments for blood-contacting medical devices. The polysaccharide-based surface coatings have good cytocompatibility and resist microbial adhesion of both Pseudomonas aeruginosa and Staphylococcus aureus. The blood compatibility of surfaces containing carboxymethyl-kappa-carrageenan was directly compared to similar polyelectrolyte multilayers containing heparin. The carboxymethyl-kappa-carrageenan surfaces inhibit whole-blood clotting like heparin-containing surfaces. Blood clotting is mediated by both protein-surface and cell-surface interactions. The carboxymethyl-kappa-carrageenan surfaces adsorb more fibrinogen and less albumin than the heparin surfaces, and they also exhibit reduced platelet and leukocyte adhesion, compared to heparin surfaces. These results suggest that carboxymethyl-kappa-carrageenan may represent a sustainable alternative to heparin as an anticoagulant surface modification.
Supplementary Information:
The online version contains supplementary material available at 10.1007/s44340-025-00043-w.
