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Synthesis And Characterization Of Controlled Nitric Oxide Release From S-Nitroso-N-Acetyl-D-Penicillamine Covalently Linked To Polyvinyl Chloride (Snap-Pvc), Sean Hopkins, Megan C. Frost
Synthesis And Characterization Of Controlled Nitric Oxide Release From S-Nitroso-N-Acetyl-D-Penicillamine Covalently Linked To Polyvinyl Chloride (Snap-Pvc), Sean Hopkins, Megan C. Frost
Michigan Tech Publications
Polyvinyl chloride (PVC) is one of the most widely used polymers in medicine but has very poor biocompatibility when in contact with tissue or blood. To increase biocompatibility, controlled release of nitric oxide (NO) can be utilized to mitigate and reduce the inflammatory response. A synthetic route is described where PVC is aminated to a specified degree and then further modified by covalently linking S-nitroso-N-acetyl-d-penicillamine (SNAP) groups to the free primary amine sites to create a nitric oxide releasing polymer (SNAP-PVC). Controllable release of NO from SNAP-PVC is described using photoinitiation from light emitting diodes (LEDs). Ion-mediated NO release is …
Fabrication Of Biocompatible, Vibrational Magnetoelastic Materials For Controlling Cellular Adhesion, Hal Holmes, Ee Lim Tan, Keat Ghee Ong, Rupak Rajachar
Fabrication Of Biocompatible, Vibrational Magnetoelastic Materials For Controlling Cellular Adhesion, Hal Holmes, Ee Lim Tan, Keat Ghee Ong, Rupak Rajachar
Michigan Tech Publications
This paper describes the functionalization of magnetoelastic (ME) materials with Parylene-C coating to improve the surface reactivity to cellular response. Previous study has demonstrated that vibrating ME materials were capable of modulating cellular adhesion when activated by an externally applied AC magnetic field. However, since ME materials are not inherently biocompatible, surface modifications are needed for their implementation in biological settings. Here, the long-term stability of the ME material in an aqueous and biological environment is achieved by chemical-vapor deposition of a conformal Parylene-C layer, and further functionalized by methods of oxygen plasma etching and protein adsorption. In vitro cytotoxicity …