Fluorine doping into diamond-like carbon coatings inhibits protein adsorption and platelet activation

Terumitsu Hasebe, Satoshi Yohena, Aki Kamijo, Yuko Okazaki, Atsushi Hotta, Koki Takahashi, Tetsuya Suzuki

Research output: Contribution to journalArticle

61 Citations (Scopus)

Abstract

The first major event when a medical device comes in contact with blood is the adsorption of plasma proteins. Protein adsorption on the material surface leads to the activation of the blood coagulation cascade and the inflammatory process, which impair the lifetime of the material. Various efforts have been made to minimize protein adsorption and platelet adhesion. Recently, diamond-like carbon (DLC) has received much attention because of their antithrombogenicity. We recently reported that coating silicon substrates with fluorine-doped diamond-like carbon (F-DLC) drastically suppresses platelet adhesion and activation. Here, we evaluated the protein adsorption on the material surfaces and clarified the relationship between protein adsorption and platelet behaviors, using polycarbonate and DLC- or F-DLC-coated polycarbonate. The adsorption of albumin and fibrinogen were assessed using a colorimetric protein assay, and platelet adhesion and activation were examined using a differential interference contrast microscope. A higher ratio of albumin to fibrinogen adsorption was observed on F-DLC than on DLC and polycarbonate films, indicating that the F-DLC film should prevent thrombus formation. Platelet adhesion and activation on the F-DLC films were more strongly suppressed as the amount of fluorine doping was increased. These results show that the F-DLC coating may be useful for blood-contacting devices.

Original languageEnglish
Pages (from-to)1192-1199
Number of pages8
JournalJournal of Biomedical Materials Research - Part A
Volume83
Issue number4
DOIs
Publication statusPublished - 2007 Dec 15

Keywords

  • Diamond-like carbon
  • Fluorine
  • Platelet activation
  • Protein adsorption

ASJC Scopus subject areas

  • Ceramics and Composites
  • Biomaterials
  • Biomedical Engineering
  • Metals and Alloys

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