20.500.12556/DKUM-89595 Novel magnetic iron oxide-dextran sulphate nanocomposites as potential anticoagulants: Investigating interactions with blood components and assessing cytotoxicity 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. dextran sulphate magnetic nanoparticles blood protein interactions clot formation anticoagulants cytotoxicity studies dekstran sulfat magnetni nanodelci interakcije krvnih beljakovin nastajanje strdkov antikoagulanti študije citotoksičnosti true false true Elsevier Angleški jezik Slovenski jezik https://www.sciencedirect.com/science/article/pii/S0144861724006957?via%3Dihub Članek v reviji 2024-07-25 14:46:29 2024-07-25 14:46:30 2024-07-26 03:57:24 0000-00-00 00:00:00 2024 0 0 13 str. Vol. 343, [article no.] 122469 Nov. 2024 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2024-05-30 2024-07-06 2024-07-14 677.46:620.3 202837507 10.1016/j.carbpol.2024.122469 1879-1344 1-s2.0-S0144861724006957-main-on-line-published.pdf 1-s2.0-S0144861724006957-main-on-line-published.pdf 1 12A2452F263CFF4D1A4C6F239150AEEF 28827cb3500eca433d12cb8d63de391107fad8708fcd36db1c09053e82bb9aa6 6f8e026c-4a85-11ef-8a7a-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=181796 https://www.sciencedirect.com/science/article/pii/S0144861724006957?via%3Dihub 0 81747a1e-4a84-11ef-8a7a-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=181794 Fakulteta za strojništvo 0 0 0