The effect of ethylene oxide, glow discharge and electron beam on the surface characteristics of poly(L-lactide-co-caprolactone) and the corresponding cellular response of adipose stem cells.

Abstract:

:Bioabsorbable polymers are increasingly being used in tissue engineering strategies. Despite the knowledge that some sterilization techniques may affect the physical properties of these polymers, this aspect is often overlooked. We speculate that the type of sterilization method used may influence cellular responses by altering the surface characteristics. We cultured adipose stem cells on bioabsorbable poly(l-lactide-co-caprolactone) (PLCL) sheets, sterilized using either ethylene oxide (EO), argon glow discharge (aGD) or electron beam (e-beam). Significantly higher values for surface roughness in the order EO>aGD>e-beam and significant differences in contact angles (EO>e-beam>aGD) and surface energies (aGD>e-beam>EO) were observed. Increased cell attachment and proliferation rates were observed with lower contact angles. The alkaline phosphatase activity was significantly higher for the ethylene oxide sterilized PLCL sheet. In conclusion, the type of sterilization for bioabsorbable polymers should be considered in the design of new scaffolds, since it might affect, or can be used to enhance, the outcome of the tissue engineered construct.

journal_name

Acta Biomater

journal_title

Acta biomaterialia

authors

Kroeze RJ,Helder MN,Roos WH,Wuite GJ,Bank RA,Smit TH

doi

10.1016/j.actbio.2009.11.022

subject

Has Abstract

pub_date

2010-06-01 00:00:00

pages

2060-5

issue

6

eissn

1742-7061

issn

1878-7568

pii

S1742-7061(09)00518-2

journal_volume

6

pub_type

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