Surface charge-bias impact of amine-contained pseudozwitterionic biointerfaces on the human blood compatibility
| Autor: | Arunachalam Chinnathambi, Hsin-Tsung Ho, Hsu Ko-Jen, Antoine Venault, Yung Chang, Lu-Chen Yeh |
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| Rok vydání: | 2017 |
| Předmět: |
Erythrocytes
Surface Properties Static Electricity Biocompatible Materials 02 engineering and technology 010402 general chemistry Methacrylate 01 natural sciences chemistry.chemical_compound Platelet Adhesiveness Colloid and Surface Chemistry Adsorption Protein Domains Leukocytes Zeta potential Humans Organic chemistry Surface charge Amines Physical and Theoretical Chemistry Acrylamides Comonomer Fibrinogen Water Hydrogels Surfaces and Interfaces General Medicine 021001 nanoscience & nanotechnology 0104 chemical sciences Chemical engineering Polymerization chemistry Self-healing hydrogels Methacrylates 0210 nano-technology Biotechnology Protein adsorption |
| Zdroj: | Colloids and Surfaces B: Biointerfaces. 151:372-383 |
| ISSN: | 0927-7765 |
| DOI: | 10.1016/j.colsurfb.2016.12.040 |
| Popis: | This work discusses the impact of the charge bias and the hydrophilicity on the human blood compatibility of pseudozwitterionic biomaterial gels. Four series of hydrogels were prepared, all containing negatively-charged 3-sulfopropyl methacrylate (SA), and either acrylamide, N-isopropylacrylamide, 2-dimethylaminoethyl methacrylate (DMAEMA) or [2-(methacryloyloxy)ethyl]trimethylammonium (TMA), to form SnAm, SnNm, SnDm or SnTm hydrogels, respectively. An XPS analysis proved that the polymerization was well controlled from the initial monomer ratios. All gels present high surface hydrophilicity, but varying bulk hydration, depending on the nature/content of the comonomer, and on the immersion medium. The most negative interfaces (pure SA, S7A3, S5A5) showed significant fibrinogen adsorption, ascribed to the interactions of the αC domains of the protein with the gels, then correlated to considerable platelet adhesion; but low leukocyte/erythrocyte attachments were measured. Positive gels (excess of DMAEMA or TMA) are not hemocompatible. They mediate protein adsorption and the adhesion of human blood cells, through electrostatic attractive interactions. The neutral interfaces (zeta potential between -10mV and +10mV) are blood-inert only if they present a high surface and bulk hydrophilicity. Overall, this study presents a map of the hemocompatible behavior of hydrogels as a function of their surface charge-bias, essential to the design of blood-contacting devices. |
| Databáze: | OpenAIRE |
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