Platelet and coagulation factor variations induced in vitro by polyethylene terephthalate (Dacron®) coated with pyrolytic carbon

Elisabetta Cenni, Carla Renata Arciola, Gabriela Ciapetti, Donatella Granchi, Lucia Savarino, Susanna Stea, Daniela Cavedagna, Tiziano Curti, Giuseppina Falsone, Arturo Pizzoferrato

Research output: Contribution to journalArticle

Abstract

The haemocompatibility of polyethylene terephthalate (Dacron®) coated with pyrolytic carbon was examined in vitro, evaluating its capability of inducing adhesion and platelet activation, and of modifying the intrinsic coagulation pathway. Platelet adhesion was evaluated by counting platelets before and after in vitro contact of human plasma with the material under examination. Platelet activation was evaluated by determining platelet factor 4 (PF4) and thromboxane B2. Intrinsic coagulation pathway alterations were studied by determining activated partial thromboplastin time (APTT) and the activity of single factors. The results obtained show that pyrolytic carbon-coated Dacron induces platelet adhesion, reduction in platelet volume and lower increase in thromboxane production than that obtained after contact with uncoated Dacron. Pyrolytic carbon-coated Dacron does not induce PF4 release, contrary to uncoated Dacron induces a significant release. Moreover, pyrolytic carbon-coated Dacron, induces a significant extension of APTT by reducing the activity of intrinsic pathway factors, particularly factor XI.

Original languageEnglish
Pages (from-to)973-976
Number of pages4
JournalBiomaterials
Volume16
Issue number13
DOIs
Publication statusPublished - 1995

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Keywords

  • intrinsic coagulation pathway
  • platelets
  • Pyrolytic carbon

ASJC Scopus subject areas

  • Biophysics
  • Bioengineering
  • Mechanics of Materials
  • Biomaterials
  • Ceramics and Composites
  • Biotechnology
  • Biomedical Engineering

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