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Br J Ophthalmol 1999;83:1168-1171 doi:10.1136/bjo.83.10.1168
  • Original Article
    • Laboratory science

Cell and protein adhesion studies in glaucoma drainage device development

  1. The AGFID project team150
  1. Mr K Sheng Lim, Wound Healing Research Unit, Department of Pathology, Institute of Ophthalmology, Bath Street, London EC1V 9EL.
  • Accepted 25 June 1999

Abstract

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.

CONCLUSION Phosphorylcholine coating is a new material technology that offers considerable promise in the field of glaucoma drainage device development.

Footnotes

  • ↵Members of the team are listed at the end of the paper.

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