title: Design, synthesis and evaluation of graftable thrombin inhibitors for the preparation of blood-compatible polymer materials.
abstract: Piperazinyl-amide derivatives of N-alpha-(3-trifluoromethyl-benzenesulfonyl)-L-arginine (1) were synthesized as graftable thrombin inhibitors. The possible disturbance of biological activity due to a variable spacer-arm fixed on the N-4 piperazinyl position was evaluated in vitro, against human alpha-thrombin, and in blood coagulation assay. Molecular modelling (in silico analysis) and X-ray diffraction studies of thrombin-inhibitor complexes were also performed. The fixation of bioactive molecules on poly(butylene terephthalate) (PBT) and poly(ethylene terephthalate) (PET) membranes was performed by wet chemistry treatment and evaluated by XPS analysis. Surface grafting of inhibitor 1d improved the membrane hemocompatibility by reducing blood clot formation on the modified surface.
authors.affiliation: Unité de Chimie Organique et Médicinale, Université catholique de Louvain, Bâtiment Lavoisier, place Louis Pasteur 1, B-1348, Louvain-la-Neuve, Belgium.
authors.forename: Claudio
authors.initials: C
authors.lastname: Salvagnini
authors.forename: Catherine
authors.initials: C
authors.lastname: Michaux
authors.forename: Julie
authors.initials: J
authors.lastname: Remiche
authors.forename: Johan
authors.initials: J
authors.lastname: Wouters
authors.forename: Paulette
authors.initials: P
authors.lastname: Charlier
authors.forename: Jacqueline
authors.initials: J
authors.lastname: Marchand-Brynaert
mesh_terms: D000925:Anticoagulants / Q000138:chemical synthesis* / Q000494:pharmacology; D001120:Arginine / Q000031:analogs & derivatives / Q000138:chemical synthesis / Q000494:pharmacology; D001672:Biocompatible Materials / Q000138:chemical synthesis* / Q000494:pharmacology; D001777:Blood Coagulation / Q000187:drug effects; D015195:Drug Design; D008958:Models, Molecular; D011091:Polyesters; D011093:Polyethylene Terephthalates; D011108:Polymers / Q000138:chemical synthesis*; D013917:Thrombin / Q000037:antagonists & inhibitors*; D014961:X-Ray Diffraction
chemical_list: D000925:Anticoagulants; D001672:Biocompatible Materials; D011091:Polyesters; D011093:Polyethylene Terephthalates; D011108:Polymers; C041733:poly(1,4-butylene terephthalate); D001120:Arginine; D013917:Thrombin