Olivija Plohl (Author), Lidija Fras Zemljič (Author), Boštjan Vihar (Author), Alenka Vesel (Author), Sašo Gyergyek (Author), Uroš Maver (Author), Irena Ban (Author), Matej Bračič (Author)

Abstract

Examining the critical role of anticoagulants in medical practice, particularly their central function in preventing abnormal blood clotting, is of the utmost importance. However, the study of interactions between blood proteins and alternative anticoagulant nano-surfaces is still understood poorly. In this study, novel approach involving direct functionalisation of magnetic iron oxide nanoparticles (MNPs) as carriers with sulphated dextran (s-dext) is presented, with the aim of evaluating the potential of magnetically-responsive MNPs@s-dext as anticoagulants. The physicochemical characterisation of the synthesised MNPs@s-dext includes crystal structure analysis, morphology study, surface and electrokinetic properties, thermogravimetric analysis and magnetic properties` evaluation, which confirms the successful preparation of the nanocomposite with sulfonate groups. The anticoagulant potential of MNPs@s-dext was investigated using a standardised activated partial thromboplastin time (APTT) test and a modified APTT test with a quartz crystal microbalance with dissipation (QCM-D) which confirmed the anticoagulant effect. Time-resolved solid-liquid interactions between the MNPs@s-dext and model blood proteins bovine serum albumin and fibrinogen were also investigated, to gain insight into their hemocompatibility, and revealed protein-repellence of MNPs@s-dext against blood proteins. The study also addressed comprehensive cytotoxicity studies of prepared nanocomposites, and provided valuable insights into potential applicability of MNPs@s-dext as a promising magnetic anticoagulant in biomedical contexts.

Keywords

dekstran sulfat;magnetni nanodelci;interakcije krvnih beljakovin;nastajanje strdkov;antikoagulanti;študije citotoksičnosti;dextran sulphate;magnetic nanoparticles;blood protein interactions;clot formation;anticoagulants;cytotoxicity studies;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UM FS - Faculty of Mechanical Engineering
Publisher: Elsevier
UDC: 677.46:620.3
COBISS: 202837507 Link will open in a new window
ISSN: 1879-1344
Views: 40
Downloads: 2
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Other data

Secondary language: Slovenian
Secondary keywords: dekstran sulfat;magnetni nanodelci;interakcije krvnih beljakovin;nastajanje strdkov;antikoagulanti;študije citotoksičnosti;
Type (COBISS): Article
Pages: 13 str.
Issue: ǂVol. ǂ343, [article no.] 122469
Chronology: Nov. 2024
DOI: 10.1016/j.carbpol.2024.122469
ID: 24592959