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Article: Retinal toxicity of intravitreal ganciclovir in rabbit eyes following vitrectomy and insertion of silicone oil

TitleRetinal toxicity of intravitreal ganciclovir in rabbit eyes following vitrectomy and insertion of silicone oil
Authors
KeywordsGanciclovir
Issue Date2004
Citation
Canadian Journal of Ophthalmology, 2004, v. 39, n. 5, p. 499-505 How to Cite?
AbstractBackground: Although intravitreal ganciclovir dosages up to 500 pg have been demonstrated to be safe in some studies, other studies have shown toxic retinal effects in rabbit eyes without silicone oil at lower dosages. In current clinical practice, the same dosage of intravitreal antiviral agent is given regardless of whether there has been retinal detachment repair with silicone oil. We performed a study to investigate, in rabbit eyes following vitrectomy and silicone oil insertion, the retinal toxicity of serial intravitreal injections of ganciclovir, using dosages previously found not to produce significant toxic effects in nonvitrectomized eyes. Methods: Twenty-eight eyes of 14 New Zealand pigmented rabbits underwent pars plana vitrectomy and silicone oil insertion. One eye of each animal received an intravitreal ganciclovir injection twice weekly for 2 weeks. The other eye received 0.1 mL of normal saline as a control. Three dosages of ganciclovir (50, 100 or 200 μg/0.1 mL) were used in three groups of three to six animals. Scotopic electroretinography and histologic examination were performed 2 weeks postoperatively. Results: No differences in scotopic b-wave threshold (p = 0.23, 0.78 and 0.50 for ganciclovir dosages of 50, 100 and 200 μg/0.1 mL respectively, Mann-Whitney U test) or in light microscopy findings were noted between the treatment and control eyes at any dosage of ganciclovir. Surgical complications were observed in eight eyes; the data for these eyes were not used for analysis. Interpretation: Ganciclovir dosages of up to 200 μg/0.1 mL appear to be safe for serial intravitreal injection in rabbit eyes following vitrectomy and silicone oil insertion.
Persistent Identifierhttp://hdl.handle.net/10722/228061
ISSN
2015 Impact Factor: 1.46
2015 SCImago Journal Rankings: 0.685

 

DC FieldValueLanguage
dc.contributor.authorEng, Kenneth T.-
dc.contributor.authorLam, Wai Ching-
dc.contributor.authorParker, John A.-
dc.contributor.authorYücel, Yeni H.-
dc.date.accessioned2016-08-01T06:45:05Z-
dc.date.available2016-08-01T06:45:05Z-
dc.date.issued2004-
dc.identifier.citationCanadian Journal of Ophthalmology, 2004, v. 39, n. 5, p. 499-505-
dc.identifier.issn0008-4182-
dc.identifier.urihttp://hdl.handle.net/10722/228061-
dc.description.abstractBackground: Although intravitreal ganciclovir dosages up to 500 pg have been demonstrated to be safe in some studies, other studies have shown toxic retinal effects in rabbit eyes without silicone oil at lower dosages. In current clinical practice, the same dosage of intravitreal antiviral agent is given regardless of whether there has been retinal detachment repair with silicone oil. We performed a study to investigate, in rabbit eyes following vitrectomy and silicone oil insertion, the retinal toxicity of serial intravitreal injections of ganciclovir, using dosages previously found not to produce significant toxic effects in nonvitrectomized eyes. Methods: Twenty-eight eyes of 14 New Zealand pigmented rabbits underwent pars plana vitrectomy and silicone oil insertion. One eye of each animal received an intravitreal ganciclovir injection twice weekly for 2 weeks. The other eye received 0.1 mL of normal saline as a control. Three dosages of ganciclovir (50, 100 or 200 μg/0.1 mL) were used in three groups of three to six animals. Scotopic electroretinography and histologic examination were performed 2 weeks postoperatively. Results: No differences in scotopic b-wave threshold (p = 0.23, 0.78 and 0.50 for ganciclovir dosages of 50, 100 and 200 μg/0.1 mL respectively, Mann-Whitney U test) or in light microscopy findings were noted between the treatment and control eyes at any dosage of ganciclovir. Surgical complications were observed in eight eyes; the data for these eyes were not used for analysis. Interpretation: Ganciclovir dosages of up to 200 μg/0.1 mL appear to be safe for serial intravitreal injection in rabbit eyes following vitrectomy and silicone oil insertion.-
dc.languageeng-
dc.relation.ispartofCanadian Journal of Ophthalmology-
dc.subjectGanciclovir-
dc.titleRetinal toxicity of intravitreal ganciclovir in rabbit eyes following vitrectomy and insertion of silicone oil-
dc.typeArticle-
dc.description.natureLink_to_subscribed_fulltext-
dc.identifier.scopuseid_2-s2.0-4444294232-
dc.identifier.volume39-
dc.identifier.issue5-
dc.identifier.spage499-
dc.identifier.epage505-
dc.identifier.eissn1715-3360-

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