[en] Cataract surgery is a routine ophthalmologic intervention resulting in replacement of the opacified natural lens by a polymeric intraocular lens (IOL). A main postoperative complication, as a result of protein adsorption and lens epithelial cell (LEC) adhesion, growth, and proliferation, is the secondary cataract, referred to as posterior capsular opacification (PCO). To avoid PCO formation, a poly(ethylene glycol) (PEG) chemical coating was created on the surface of hydrogel IOLs. Attenuated total reflectance Fourier transform infrared spectroscopy, “captive bubble” and “water droplet” contact angle measurements, and atomic force microscopy analyses proved the covalent grafting of the PEG chains on the IOL surface while keeping unchanged the optical properties of the initial material. A strong decrease of protein adsorption and cell adhesion depending on the molar mass of the grafted PEG (1100, 2000, and 5000 g/mol) was observed by performing the relevant in vitro tests with green fluorescent protein and LECs, respectively. Thus, the study provides a facile method for developing materials with nonfouling properties, particularly IOLs.
Research Center/Unit :
Center for Education and Research on Macromolecules (CERM)
Disciplines :
Chemistry Materials science & engineering
Author, co-author :
Bozukova, Dimitriya ; Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Pagnoulle, Christophe; Physiol SA, Liège, Belgium
De Pauw-Gillet, Marie-Claire ; Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Laboratory of Histology and Cytology
Desbief, Simon; University of Mons-Hainaut (UMH) > Chemistry of New Materials Department
Lazzaroni, Roberto; University of Mons-Hainaut (UMH) > Chemistry of New Materials Department
Ruth, Nadia ; Université de Liège - ULiège > Center for Protein Engineering (CIP)
Jérôme, Robert ; Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Jérôme, Christine ; Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Language :
English
Title :
Improved performances of intraocular lenses by poly(ethylene glycol) chemical coatings
Publication date :
August 2007
Journal title :
Biomacromolecules
ISSN :
1525-7797
eISSN :
1526-4602
Publisher :
American Chemical Society, Washington, United States - District of Columbia
F.R.S.-FNRS - Fonds de la Recherche Scientifique The Walloon Region in the frame of the First Europe (SURFOLIO) program BELSPO - SPP Politique scientifique - Service Public Fédéral de Programmation Politique scientifique
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