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Abstract #15630 Published in IGR 1-3
Cell and protein adhesion studies in glaucoma drainage device development
Lim KS; Faragher RG; Reed S; Wong L; Olliff CJ; Hanlon GW; Gard P; Willis S; Denyer SP; Muir ABritish Journal of Ophthalmology 1999; 83: 1168-1171
AIM: To examine in vitro whether phosphorylcholine coating of poly (methylmethacrylate) can reduce the adhesion of fibrinogen, fibrin, human scleral fibroblast and macrophage compared with current biomaterials used in the construction of glaucoma drainage devices. METHODS: Sample discs (n=6) of poly(methylmethacrylate), silicone, polypropylene, PTFE, and phosphorylcholine coated poly (methylmethacrylate) were seeded with fibrinogen, fibrin, fibroblast, and macrophages and incubated for variable lengths of time. The quantification was performed using radioactivity, spectrophotometry, ATP dependent luminometry, and immunohistochemistry respectively. RESULTS: Fibrinogen and fibrin adhesion to phosphorylcholine coated poly(methylmethacrylate) were significantly lower than PMMA (p=0.004). Phosphorylcholine coating of poly(methylmethacrylate) also significantly reduced the adhesion of human scleral fibroblast (p=0.002) and macrophage (p=0.01) compared with PMMA. All the other biomaterials showed either similar or insignificantly different levels of adhesion to all the proteins and cells tested compared with PMMA. CONCLUSIONS: Phosphorylcholine coating is a new material technology that offers considerable promise in the field of glaucoma drainage device development.
Dr. K.S. Lim, Wound Healing Research Unit, Department of Pathology, Institute of Ophthalmology, Bath Street, London EC1V 9EL; UK
Classification:
12.8.2 With tube implant or other drainage devices (Part of: 12 Surgical treatment > 12.8 Filtering surgery)