Vorinostat: a potent agent to prevent and treat laser-induced corneal haze.
J Refract Surg
; 28(4): 285-90, 2012 Apr.
Article
em En
| MEDLINE
| ID: mdl-22386369
ABSTRACT
PURPOSE:
This study investigated the efficacy and safety of vorinostat, a deacetylase (HDAC) inhibitor, in the treatment of laser-induced corneal haze following photorefractive keratectomy (PRK) in rabbits in vivo and transforming growth factor beta 1 (TGFß1) -induced corneal fibrosis in vitro.METHODS:
Corneal haze in rabbits was produced with -9.00 diopters (D) PRK. Fibrosis in cultured human and rabbit corneal fibroblasts was activated with TGFß1. Vorinostat (25 µm) was topically applied once for 5 minutes on rabbit cornea immediately after PRK for in vivo studies. Vorinostat (0 to 25 µm) was given to human/rabbit corneal fibroblasts for 5 minutes or 48 hours for in vitro studies. Slit-lamp microscopy, TUNEL assay, and trypan blue were used to determined vorinostat toxicity, whereas real-time polymerase chain reaction, immunocytochemistry, and immunoblotting were used to measure its efficacy.RESULTS:
Single 5-minute vorinostat (25 µm) topical application on the cornea following PRK significantly reduced corneal haze (P<.008) and fibrotic marker proteins (α-smooth muscle actin and f-actin; P<.001) without showing redness, swelling, or inflammation in rabbit eyes in vivo screened 4 weeks after PRK. Vorinostat reduced TGFß1-induced fibrosis in human and rabbit corneas in vitro in a dose-dependent manner without altering cellular viability, phenotype, or proliferation.CONCLUSIONS:
Vorinostat is non-cytotoxic and safe for the eye and has potential to prevent laser-induced corneal haze in patients undergoing PRK for high myopia.
Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Complicações Pós-Operatórias
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Ceratectomia Fotorrefrativa
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Córnea
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Opacidade da Córnea
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Inibidores de Histona Desacetilases
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Ácidos Hidroxâmicos
Limite:
Animals
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Female
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Humans
Idioma:
En
Ano de publicação:
2012
Tipo de documento:
Article