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Activation of platelets adhered on amorphous hydrogenated carbon (a-C:H) films synthesized by plasma immersion ion implantation-deposition (PIII-D).

Abstract：

:Amorphous carbon films have attracted much attention recently due to their good biocompatibility. Diamond-like carbon (DLC), one form of amorphous carbon that is widely used in many kinds of industries, has been proposed for use in blood contacting medical devices. However, the blood coagulation mechanism on DLC in a biological environment is not well understood. Platelet adhesion and activation are crucial events in the interactions between blood and the materials as they influence the subsequent formation of thrombus. In this work, the behavior of platelets adhered onto hydrogenated amorphous carbon films (a-C:H) is investigated. Hydrogenated amorphous carbon films with different hydrogen contents, structures, and chemical bonds were fabricated at room temperature using plasma immersion ion implantation-deposition (PIII-D). The wettability of the films was investigated by contact angle measurements using several common liquids. Platelet adhesion experiments were conducted to examine the interaction of blood with the films in vitro and the activation of adherent platelets. The results show that the behavior of the platelets adhered on the a-C:H films is influenced by their structure and chemical bond, and it appears that protein interaction plays a key role in the activation of the adherent platelets.

journal_name

Biomaterials

journal_title

Biomaterials

authors

Yang P,Huang N,Leng YX,Chen JY,Fu RK,Kwok SC,Leng Y,Chu PK

doi

10.1016/s0142-9612(03)00091-7

keywords:

subject

Has Abstract

pub_date

2003-08-01 00:00:00

pages

2821-9

issue

17

eissn

0142-9612

issn

1878-5905

pii

S0142961203000917

journal_volume

24

pub_type

杂志文章

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