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Investigative Ophthalmology & Visual Science, Vol 28, 907-911, Copyright © 1987 by Association for Research in Vision and Ophthalmology

ARTICLES AND REPORTS

Clearance and localization of intravitreal liposomes in the aphakic vitrectomized eye

WH Stern, TD Heath, GP Lewis, CJ Guerin, PA Erickson, NG Lopez and KL Hong

The authors have examined the fate of intravitreally injected liposomes in the aphakic, vitrectomized eye of the rabbit. Liposomes labelled with 125[I]-p-hydroxybenzimidylphosphatidylethanolamine were eliminated rapidly from the intraocular fluid. Nonetheless, a significant fraction of these liposomes were found to bind to various ocular tissues including the retina, iris, sclera, and cornea. Ultrastructural studies with gold colloid-loaded liposomes revealed that retinal bound liposomes were attached to the inner limiting lamina but did not penetrate to the internal cells of the retina. Epiretinal cells bound and internalized gold colloid-loaded liposomes suggesting that these cells may be very sensitive to liposome mediated drug delivery.


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A. Bochot, E. Fattal, V. Boutet, J. R. Deverre, J. C. Jeanny, H. Chacun, and P. Couvreur
Intravitreal Delivery of Oligonucleotides by Sterically Stabilized Liposomes
Invest. Ophthalmol. Vis. Sci., January 1, 2002; 43(1): 253 - 259.
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Copyright © 1987 by the Association for Research in Vision and Ophthalmology