PMID- 33621749 OWN - NLM STAT- MEDLINE DCOM- 20210617 LR - 20210617 IS - 1873-4367 (Electronic) IS - 0927-7765 (Linking) VI - 201 DP - 2021 May TI - Surface modification of polyurethane with eptifibatide-loaded degradable nanoparticles reducing risk of blood coagulation. PG - 111624 LID - S0927-7765(21)00068-0 [pii] LID - 10.1016/j.colsurfb.2021.111624 [doi] AB - The main purpose of the work was to develop a drug releasing coatings on the surface of medical devices exposed to blood flow, what should enable effective inhibition of blood coagulation process. As a part of the work, the process of encapsulating the anticoagulant drug eptifibatide (EPT) in poly(DL-lactic-co-glycolic acid) (PLGA) nanoparticles was developed. EPT encapsulation efficiency was 29.1 +/- 2.1%, while the EPT loading percentage in the nanoparticles was 4.2 +/- 0.3%. The PLGA nanoparticles were suspended in a polyanion solution (hyaluronic acid (HA)) and deposited on the surface-treated thermoplastic polyurethane (TPU) by a layer-by-layer method. As a polycation poly-L-lysine (PLL) was used. The influence of released EPT on the activation of the coagulation system was analyzed using dynamic blood tester. Performed experiments show an effective delivery of the drug to the bloodstream and low risk of platelets (membrane receptor) activation. The dynamic blood test process, including its physical phenomenon, was described using numerical methods, i.e. a finite volume cone-and-plate test model as well as non-Newtonian blood models. The values of shear stress and blood flow velocity under the fast-rotating cone were computed applying boundary conditions of cylinder wall imitating blood-nanomaterial interaction. Implementing boundary conditions as initial shear stress values of bottom cylinder wall resulted in the increase of shear stress in blood under rotating cone. The developed system combining drug eluting polymeric nanoparticles with the polyelectrolyte "layer-by-layer" coating can be easily introduced to medical implants of various shape, with the advantages of resorbable drug carriers allowing for local and controllable delivery of anti-thrombogenic drugs. CI - Copyright (c) 2021 Elsevier B.V. All rights reserved. FAU - Reczynska, Katarzyna AU - Reczynska K AD - AGH University of Science and Technology, Faculty of Materials Science and Ceramics, Al. Mickiewicza 30, 30-059 Krakow, Poland. FAU - Major, Roman AU - Major R AD - Institute of Metallurgy and Materials Science, Polish Academy of Sciences, 25 Reymonta st., 30-059 Cracow, Poland. FAU - Kopernik, Magdalena AU - Kopernik M AD - AGH University of Science and Technology, Faculty of Metals Engineering and Industrial Computer Science, Al. Mickiewicza 30, 30-059 Krakow, Poland. Electronic address: kopernik@agh.edu.pl. FAU - Pamula, Elzbieta AU - Pamula E AD - AGH University of Science and Technology, Faculty of Materials Science and Ceramics, Al. Mickiewicza 30, 30-059 Krakow, Poland. FAU - Imbir, Gabriela AU - Imbir G AD - Institute of Metallurgy and Materials Science, Polish Academy of Sciences, 25 Reymonta st., 30-059 Cracow, Poland. FAU - Plutecka, Hanna AU - Plutecka H AD - Department of Internal Medicine, Jagiellonian University Medical College, 8 Skawinska st., 31-066 Cracow, Poland. FAU - Bruckert, Franz AU - Bruckert F AD - Laboratoire des Materiaux et du Genie Physique - UMR 5628, 3 parvis Louis Neel, Grenoble Cedex 1, France. FAU - Surmiak, Marcin AU - Surmiak M AD - Department of Internal Medicine, Jagiellonian University Medical College, 8 Skawinska st., 31-066 Cracow, Poland. LA - eng PT - Journal Article DEP - 20210213 PL - Netherlands TA - Colloids Surf B Biointerfaces JT - Colloids and surfaces. B, Biointerfaces JID - 9315133 RN - 0 (Drug Carriers) RN - 0 (Polyurethanes) RN - 1SIA8062RS (Polylactic Acid-Polyglycolic Acid Copolymer) RN - 26009-03-0 (Polyglycolic Acid) RN - NA8320J834 (Eptifibatide) SB - IM MH - Blood Coagulation MH - Drug Carriers MH - Eptifibatide MH - *Nanoparticles MH - Particle Size MH - *Polyglycolic Acid MH - Polylactic Acid-Polyglycolic Acid Copolymer MH - Polyurethanes OTO - NOTNLM OT - Blood activation OT - Blood coagulation OT - Cone-and-plate test OT - Eptifibatide OT - Nanoparticles OT - Poly(DL-lactic-co-glycolic acid) (PLGA) EDAT- 2021/02/24 06:00 MHDA- 2021/06/22 06:00 CRDT- 2021/02/23 20:10 PHST- 2020/10/07 00:00 [received] PHST- 2021/02/03 00:00 [revised] PHST- 2021/02/08 00:00 [accepted] PHST- 2021/02/24 06:00 [pubmed] PHST- 2021/06/22 06:00 [medline] PHST- 2021/02/23 20:10 [entrez] AID - S0927-7765(21)00068-0 [pii] AID - 10.1016/j.colsurfb.2021.111624 [doi] PST - ppublish SO - Colloids Surf B Biointerfaces. 2021 May;201:111624. doi: 10.1016/j.colsurfb.2021.111624. Epub 2021 Feb 13.