RRC ID |
41533
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Author |
Zhang Q, Wang C, Babukutty Y, Ohyama T, Kogoma M, Kodama M.
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Title |
Biocompatibility evaluation of ePTFE membrane modified with PEG in atmospheric pressure glow discharge.
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Journal |
J Biomed Mater Res
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Abstract |
ePTFE membranes were modified by poly(ethylene glycol) having a molecular weight of 600 (PEG-600) in atmospheric pressure glow discharge (APG) plasma treatment. ePTFE membranes were immersed in 1%, 3%, or 5% (w/v) PEG-600 in dehydrated ethanol. PEG-600-penetrated ePTFE membranes were dried in a vacuum to immediately remove ethanol, then treated with APG at 20 kHz and 60-70 W for 15 min and thoroughly washed with ethanol and water. PEG-600-modified ePTFE membranes were analyzed using contact angle measurement, Fourier transform infrared attenuated total reflectance (FTIR-ATR), and scanning electron microscopy (SEM). ePTFE membrane contact angles were reduced after PEG-600 plasma treatment. FTIR-ATR spectra showed an absorption band due to a PEG hydroxyl group (-OH). SEM showed that ePTFE fiber surfaces were uniformly immobilized with PEG-600 and retained their porous structure. A general biological evaluation of the PEG-modified ePTFE membranes showed no cytotoxicity on CHO-K1 cell lines and no hemolytic action. Albumin adsorption on the PEG-modified ePTFE membranes increased with increasing PEG-600 deposited on ePTFE membranes. Fibrinogen adsorption decreased with increasing PEG-600 deposited on ePTFE membranes. gamma-Globulin adsorption did not change before or after PEG plasma modification. 1% and 3% PEG-600 plasma-treated ePTFE only slightly increased platelet adhesion, but adhering platelets evidenced no pseudopod formation. 5% PEG-600-modified ePTFE showed relatively large numbers of platelet adhesion. We concluded that 3% PEG-600-modified ePTFE membrane had the best physical properties and biological compatibility, indicating 3% PEG-600-modified ePTFE membranes exhibit the potential for blood filter application.
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Volume |
60(3)
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Pages |
502-9
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Published |
2002-6-5
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DOI |
10.1002/jbm.1294
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PII |
10.1002/jbm.1294
|
PMID |
11920676
|
MeSH |
Adsorption
Animals
Atmospheric Pressure
Biocompatible Materials*
Blood Platelets / cytology
Cell Adhesion
Cell Survival
Hemolysis
Membranes, Artificial*
Microscopy, Electron, Scanning
Polyethylene Glycols / chemistry*
Polytetrafluoroethylene* / chemistry
Rabbits
Serum Albumin / chemistry
|
Times Cited |
45
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WOS Category
|
ENGINEERING, BIOMEDICAL
MATERIALS SCIENCE, BIOMATERIALS
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Resource |
Human and Animal Cells |
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