Decreased material-activation of the complement system using low-energy plasma polymerized poly(vinyl pyrrolidone) coatings
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Decreased material-activation of the complement system using low-energy plasma polymerized poly(vinyl pyrrolidone) coatings. / Andersen, Thomas E; Palarasah, Yaseelan; Skjødt, Mikkel-Ole; Ogaki, Ryosuke; Benter, Maike; Alei, Mojagan; Kolmos, Hans J; Koch, Claus; Kingshott, Peter.
In: Biomaterials, Vol. 32, No. 20, 07.2011, p. 4481-8.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Decreased material-activation of the complement system using low-energy plasma polymerized poly(vinyl pyrrolidone) coatings
AU - Andersen, Thomas E
AU - Palarasah, Yaseelan
AU - Skjødt, Mikkel-Ole
AU - Ogaki, Ryosuke
AU - Benter, Maike
AU - Alei, Mojagan
AU - Kolmos, Hans J
AU - Koch, Claus
AU - Kingshott, Peter
N1 - Copyright © 2011 Elsevier Ltd. All rights reserved.
PY - 2011/7
Y1 - 2011/7
N2 - In the current study we investigate the activation of blood complement on medical device silicone rubber and present a plasma polymerized vinyl pyrrolidone (ppVP) coating which strongly decreases surface-activation of the blood complement system. We show that uncoated silicone and polystyrene are both potent activators of the complement system, measured both as activated, deposited C3b and quantifying fluid-phase release of the cleavage fragment C3c. The ppVP coated silicone exhibits approximately 90% reduced complement activation compared to untreated silicone. Quartz crystal microbalance with dissipation (QCM-D) measurements show relatively strong adsorption of blood proteins including native C3 to the ppVP surface, indicating that reduction of complement activation on ppVP is neither a result of low protein adsorption nor lower direct C3-binding, and is therefore possibly a consequence of differences in the adsorbed protein layer composition. The alternative and classical complement pathways are barely detectable on ppVP while the lectin pathway through MBL/ficolin-2 deposition remains active on ppVP suggesting this pathway is responsible for the remaining subtle activation on the ppVP coated surface. The ppVP surface is furthermore characterized physically and chemically using scanning electron microscopy (SEM), x-ray photoelectron spectroscopy (XPS) and Fourier transform infrared (FTIR), which indicates preservation of chemical functionality by the applied plasma process. Overall, the ppVP coating shows a potential for increasing complement-compatibility of blood-contacting devices.
AB - In the current study we investigate the activation of blood complement on medical device silicone rubber and present a plasma polymerized vinyl pyrrolidone (ppVP) coating which strongly decreases surface-activation of the blood complement system. We show that uncoated silicone and polystyrene are both potent activators of the complement system, measured both as activated, deposited C3b and quantifying fluid-phase release of the cleavage fragment C3c. The ppVP coated silicone exhibits approximately 90% reduced complement activation compared to untreated silicone. Quartz crystal microbalance with dissipation (QCM-D) measurements show relatively strong adsorption of blood proteins including native C3 to the ppVP surface, indicating that reduction of complement activation on ppVP is neither a result of low protein adsorption nor lower direct C3-binding, and is therefore possibly a consequence of differences in the adsorbed protein layer composition. The alternative and classical complement pathways are barely detectable on ppVP while the lectin pathway through MBL/ficolin-2 deposition remains active on ppVP suggesting this pathway is responsible for the remaining subtle activation on the ppVP coated surface. The ppVP surface is furthermore characterized physically and chemically using scanning electron microscopy (SEM), x-ray photoelectron spectroscopy (XPS) and Fourier transform infrared (FTIR), which indicates preservation of chemical functionality by the applied plasma process. Overall, the ppVP coating shows a potential for increasing complement-compatibility of blood-contacting devices.
KW - Adsorption
KW - Coated Materials, Biocompatible
KW - Complement Activation
KW - Complement System Proteins
KW - Humans
KW - Materials Testing
KW - Polymers
KW - Polystyrenes
KW - Pyrrolidines
KW - Silicone Elastomers
KW - Spectroscopy, Fourier Transform Infrared
KW - Surface Properties
KW - Vinyl Compounds
KW - Evaluation Studies
KW - Journal Article
KW - Research Support, Non-U.S. Gov't
U2 - 10.1016/j.biomaterials.2011.03.002
DO - 10.1016/j.biomaterials.2011.03.002
M3 - Journal article
C2 - 21453967
VL - 32
SP - 4481
EP - 4488
JO - Biomaterials
JF - Biomaterials
SN - 0142-9612
IS - 20
ER -
ID: 172399785