Plasma Processes and Polymers
Copyright © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Online ISSN: 1612-8869
Materials Science Weekly Newsletter
Recently Published Articles
- Plasma-Etching for Controlled Modification of Structural and Mechanical Properties of Electrospun PET Scaffolds
Houman Savoji, Sophie Lerouge, Abdellah Ajji and Michael R. Wertheimer
Article first published online: 20 NOV 2014 | DOI: 10.1002/ppap.201400147
Aligned electrospun poly(ethylene terephthalate) nanofiber scaffolds that mimic the media layer of arteries have been fabricated. We used three different plasma etching techniques to bring their mechanical and surface properties in line with those of natural blood vessels. Substantial reduction in Young's modulus was attained after as little as 5 min treatment. We also report changes in surface composition, wettability and growth of smooth muscle cells (SMCs).
- Plasma Stimulation of Migration of Macrophages
Vandana Miller, Abraham Lin, Gregory Fridman, Danil Dobrynin and Alexander Fridman
Article first published online: 20 NOV 2014 | DOI: 10.1002/ppap.201400168
We present first evidence of in vitro stimulation of immune responses in a macrophage cell line using non-thermal plasma. Nanosecond pulsed DBD is effective in stimulating migration of macrophages in a 2D wound-healing assay. This is an important early step in generation of innate and adaptive immune responses in vivo.
- Dielectric Barrier Discharge Plasma Efficiently Delivers an Apoptotic Response in Human Monocytic Lymphoma
Neha Kaushik, Naresh Kumar, Chung Hyeok Kim, Nagendra Kumar Kaushik and Eun Ha Choi
Article first published online: 17 NOV 2014 | DOI: 10.1002/ppap.201400102
The effect of dielectric barrier discharge plasma on endogenous antioxidant defense and apoptosis in U937 human monocytic lymphoma cells is investigated. We shows that our DBD plasma significantly alter the metabolic viability, intracellular ROS, H2O2, NADP+/NADPH levels, GSSG/GSH levels, and endogenous antioxidant activity of cells. Annexin-V/PI staining, caspase-3/-7 activities, mRNA expression of apoptosis related gene, and reduction in mitochondrial membrane potential justify a significant level of apoptosis in cells.
- Plasma-Activated Polypropylene Mesh-Gelatin Scaffold Composite as Potential Implant for Bioactive Hernia Treatment
Selestina Gorgieva, Martina Modic, Barbara Dovgan, Maja Kaisersberger-Vincek and Vanja Kokol
Article first published online: 17 NOV 2014 | DOI: 10.1002/ppap.201400125
Potential of novel, PPmesh-GELscaffoldcomposites for active hernia treatment is demonstrated by means of extracellular matrix-like gradual µ-porosity, high elasticity, excellent intrinsic/ by ϵ-poly-L-lysine-evoked antibacterial activity against S. aureus and E. coli, for 60% diminished fibrinogen adsorption, up to 2 months biodegradation resistance, and non cytotoxicity towards human ASC cells.