PMID- 23660308 OWN - NLM STAT- MEDLINE DCOM- 20131227 LR - 20181202 IS - 1873-4367 (Electronic) IS - 0927-7765 (Linking) VI - 109 DP - 2013 Sep 1 TI - Physicochemical and biological evaluation of poly(ethylene glycol) methacrylate grafted onto poly(dimethyl siloxane) surfaces for prosthetic devices. PG - 228-35 LID - S0927-7765(13)00237-3 [pii] LID - 10.1016/j.colsurfb.2013.03.050 [doi] AB - Poly(dimethyl siloxane) (PDMS) was surface-polymerized with poly(ethylene glycol)methacrylate (PEGMA) by surface-initiated atom transfer radical polymerization (SI-ATRP) in aqueous media at room temperature. Modification of the PDMS surface followed a three-step procedure: (i) PDMS surface hydroxylation by UV/ozone exposure, immediately followed by (ii) covalent attachment of the initiator, 1-trichlorosilyl-2-(chloromethylphenyl)ethane, onto the hydroxylated PDMS, via chemical vapor deposition; finally (iii) PDMS surface-polymerization of PEGMA by ATRP. Modified PDMS was characterized by water contact angle measurement, SEM, FTIR-ATR, and XPS. Results showed that modified surfaces had a hydrophilic character, given the water contact angles around 60 degrees ; FTIR-ATR and XPS analysis confirmed the presence of polymerized PEGMA on the surface of PDMS and the adhesion of Staphylococcus aureus GB 2/1 and Streptococcus salivarius GB 24/9 onto the modified surfaces was inhibited 94% and 81%, respectively. Finally, the modified PDMS showed no evidence of cytotoxic effects in in vitro assays using human skin fibroblasts. CI - Copyright (c) 2013 Elsevier B.V. All rights reserved. FAU - Goncalves, Sara AU - Goncalves S AD - IBB-Institute for Biotechnology and Bioengineering, Centre of Biological Engineering, University of Minho, Braga, Portugal. FAU - Leiros, Ana AU - Leiros A FAU - van Kooten, Theo AU - van Kooten T FAU - Dourado, Fernando AU - Dourado F FAU - Rodrigues, Ligia R AU - Rodrigues LR LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130409 PL - Netherlands TA - Colloids Surf B Biointerfaces JT - Colloids and surfaces. B, Biointerfaces JID - 9315133 RN - 0 (Anti-Bacterial Agents) RN - 0 (Dimethylpolysiloxanes) RN - 0 (poly(ethylene glycol) methacrylate polymer) RN - 3WJQ0SDW1A (Polyethylene Glycols) RN - 63148-62-9 (baysilon) SB - IM MH - Anti-Bacterial Agents/*chemistry/*pharmacology MH - Chemistry, Physical MH - Dimethylpolysiloxanes/*chemistry/*pharmacology MH - Fibroblasts/cytology MH - Humans MH - Microbial Sensitivity Tests MH - Polyethylene Glycols/*chemistry/*pharmacology MH - Polymerization MH - *Prostheses and Implants MH - Skin/cytology MH - Staphylococcus aureus/drug effects MH - Streptococcus/drug effects MH - Structure-Activity Relationship MH - Surface Properties EDAT- 2013/05/11 06:00 MHDA- 2013/12/29 06:00 CRDT- 2013/05/11 06:00 PHST- 2012/10/24 00:00 [received] PHST- 2013/03/21 00:00 [revised] PHST- 2013/03/27 00:00 [accepted] PHST- 2013/05/11 06:00 [entrez] PHST- 2013/05/11 06:00 [pubmed] PHST- 2013/12/29 06:00 [medline] AID - S0927-7765(13)00237-3 [pii] AID - 10.1016/j.colsurfb.2013.03.050 [doi] PST - ppublish SO - Colloids Surf B Biointerfaces. 2013 Sep 1;109:228-35. doi: 10.1016/j.colsurfb.2013.03.050. Epub 2013 Apr 9.