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Morphological damage in rabbit retina caused by subretinal injection of indocyanine green. | LitMetric

Morphological damage in rabbit retina caused by subretinal injection of indocyanine green.

Graefes Arch Clin Exp Ophthalmol

Department of Ophthalmology and Visual Science, Kumamoto University Graduate School of Medical Sciences, Honjo 1-1-1, 860-8556, Kumamoto , Japan.

Published: February 2004

AI Article Synopsis

Article Abstract

Purpose: To investigate the effects of subretinal indocyanine green (ICG) on retinal morphology in rabbit eyes.

Methods: Retinal bleb detachments were produced by injections of ICG at dosages of 25 mg/ml, 5 mg/ml, and 0.5 mg/ml or with an injection of balanced salt solution (BSS) into the subretinal space of albino rabbit eyes. Morphological change was assessed by light and transmission electron microscopy from the viewpoint of dose and time. Some sections were also probed with the TUNEL technique to detect apoptotic cells.

Results: At 14 days after subretinal injection of BSS and 0.5 mg/ml ICG, the structure of the retina was well preserved. However, injections of 5 mg/ml or 25 mg/ml caused thinning of the retina, especially loss of the outer retinal layer. In eyes injected with 5 mg/ml ICG, the photoreceptors began disappearing within 3 days after the injection and over time showed the development of retinal atrophy. TUNEL-positive cells appeared abundantly in the photoreceptor layers 1 and 3 days after the injection of 5 mg/ml ICG. Transmission electron microscopy confirmed apoptosis in the photoreceptors.

Conclusion: These data indicate that subretinal ICG induces apparent morphological damage of the retina in a dose-dependent manner.

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Source
http://dx.doi.org/10.1007/s00417-003-0798-2DOI Listing

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