Activation of coagulation and platelets by candidate membranes of implantable devices in a whole blood model without soluble anticoagulant

Journal of Biomedical Materials Research - Part A - Tập 101A Số 2 - Trang 575-581 - 2013
Andrey Sokolov1, Bernt Christian Hellerud1, Tor Inge Tønnessen2, Erik Johannessen3, Tom Eirik Mollnes1,4
1Department of Immunology, University of Oslo and Oslo University Hospital Rikshospitalet, P.O. 4950, Nydalen 0424 Oslo, Norway.
2Department of Emergencies and Critical Care Medicine, Oslo University Hospital Rikshospitalet and University of Oslo, P.O. 4950, Nydalen 0424 Oslo, Norway
3Department of Micro‐ and Nanosystems Technology, Vestfold University College, P.O. Box 2243, N‐3103, Tønsberg, Norway
4Research Laboratory, Somatic Research Centre, Nordland Hospital, Bodø, and University of Tromsø, Norway

Tóm tắt

AbstractImplantable devices are challenged with thrombus formation at their biomaterial interface. Thus the importance of identifying compatible biomaterials that will help to improve the performance of these devices are becoming increasingly paramount. The aim of this study was to evaluate the activation of coagulation and platelets by candidate membranes considered for use in implantable devices on the basis of an adapted whole blood model without soluble anticoagulants. Evaluated materials were incubated with whole blood without soluble anticoagulant in wells coated with heparin. Prothrombin fragment 1+2 (PTF 1+2), thrombin‐antithrombin complex (TAT), and β‐thromboglobulin (BTG) were analyzed in plasma samples using enzyme immunoassays. The C5 inhibitor eculizumab was used to evaluate the role of complement. Incubation of two of the polyamide membranes PAR and PATF led to an increase in concentration of PTF 1+2 and TAT (p < 0.01 for PAR, ns for PATF). The BTG concentration was significantly increased for five materials [PAR, PATF, polycarbonate (PC), and two polyarylethersulphone membranes PAES‐1 and PAES‐2]. Complement inhibition had no effect on coagulation or platelet activation induced by PAR and PATF. In conclusion, PAR and PATF were not compatible with blood and should be avoided for use in implantable devices. © 2012 Wiley Periodicals, Inc. J Biomed Mater Res Part A, 2013.

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Journal of Biomedical Materials Research - Part A

Tập 101A Số 2

575-581

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