Abstract
Although the polymeric form of parylene-C is used in many medical devices, the mechanistic nature of cellular attachment to polymeric parylene-C is not clear. We examined the effects of (i) substrate morphology, (ii) surface wettability and (iii) presence of serum proteins on fibroblast attachment. A physicochemical vapor deposition technique was implemented to deposit flat parylene-C substrates as well as fibrous substrates of three different morphologies: slanted columnar, chevronic and chiral. Flat parylene-C surfaces were moderately hydrophobic while fibrous substrates were superhydrophobic. Pretreatment with oxygen plasma changed the substrate surfaces from hydrophobic to superhydrophilic. The attachment efficiency of human fibroblast cells to the flat and three fibrous thin-film parylene-C substrates was investigated. Fibroblast attachment was better on fibrous substrates than on flat substrates, and oxygen plasma pretreatment facilitated fibroblast attachment on all four morphologies. Serum proteins also facilitated cell attachment on all substrates. The combination of oxygen plasma pre-treatment and serum proteins increased fibroblast adhesion in an additive manner on flat, but not on fibrous parylene-C substrates. The morphology of cell–substrate interactions differed between fibrous and flat parylene-C substrates.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
