Linked Life Data

15261048

Source:http://linkedlifedata.com/resource/pubmed/id/15261048

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2004-7-20
pubmed:abstractText
Polyurethane (PU) is a conventional biomedical material with favorable biocompatibility and excellent mechanical properties and widely used in making vascular catheter, but its antithrombogenic property is not good enough to make it as a more demanding applicable biomaterial. Surface modification is an effective way to improve the hemocompatibility for biomaterials. The purpose of present study was to use ozonization method to modify the surface of PU vascular catheter slice to improve its antithrombogenicity by grafting N,N-dimethyl-N-methacryloxyethyl-N-(3-sulfopropyl) ammonium (DMMSA), a zwitterionic sulfobetaine monomer. PU vascular catheter (PUVC) grafted with DMMSA (PUVC-g-PDMMSA) was characterized by ATR-FTIR and XPS. ATR-FTIR and XPS investigation confirmed the graft polymerization. The blood compatibility of the grafted films was evaluated by platelet rich plasma (PRP) platelet adhesion study and scanning electron microscopy (SEM) was used to observe the morphology of platelet using PU vascular catheter (PUVC) as the reference. No platelet adhesion was observed for the grafted PUVC slice incubated with PRP at 37 degrees C for 120 min. It is significant that this new zwitterionic sulfobetaine grafted PUVC have improved antithrobogenicity. It is effective that the inner surface of vascular catheter with inner diameter in only 3mm can be grafted with PDMMSA by using ozonization method.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0927-7765
pubmed:author
pubmed:issnType
Print
pubmed:day
1
pubmed:volume
35
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1-5
pubmed:dateRevised
2009-10-16
pubmed:meshHeading
pubmed:year
2004
pubmed:articleTitle
Polyurethane vascular catheter surface grafted with zwitterionic sulfobetaine monomer activated by ozone.
pubmed:affiliation
Center of Research on Surface and Interface Chemical Engineering and Technology, Nanjing University, Nanjing 210093, PR China.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't