To report a case of gyrate atrophy of the choroid and retina associated with retinal detachment. Hyperornithinemia confirmed the diagnosis of gyrate atrophy. Pars plana vitrectomy with silicone oil infusion was performed with good anatomical results, despite the persistence of low visual acuity. Retinal detachment is a rare complication of gyrate atrophy and can be managed with pars plana vitrectomy and silicone oil. We discuss the possible mechanisms that led to low visual acuity.
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http://dx.doi.org/10.1590/s0004-27492012000100012 | DOI Listing |
J Inherit Metab Dis
January 2025
Department of Pediatrics, Emma Children's Hospital, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands.
Gyrate atrophy of the choroid and retina (GACR, OMIM #258870) is a rare inherited metabolic disorder characterized by progressive chorioretinal degeneration and hyperornithinemia. Current therapeutic modalities potentially slow disease progression but are not successful in preventing blindness. To allow for trial development, increased knowledge of the clinical phenotype and current therapeutic outcomes is required.
View Article and Find Full Text PDFInt Ophthalmol
December 2024
Genetics Department, Institute of Ophthalmology "Conde de Valenciana", Mexico City, Mexico.
Purpose: Description of retinal phenotype by structural and functional testing, ornithine plasma levels and mutational data of OAT gene in patients with Gyrate Atrophy (GA).
Methods: Ophthalmologic examination, fundus photography (CFP), autofluorescence (FAF), spectral-domain optical coherence tomography (SD-OCT), Goldmann perimetry (GP), full-field electroretinogram (ffERG) and chromatic perimetry (CP) testing were performed. Ornithine plasma levels were measured.
Mol Genet Metab
December 2024
Department of Pediatrics, Emma Children's Hospital, Amsterdam UMC, University of Amsterdam, Amsterdam, the Netherlands; Amsterdam Gastroenterology, Endocrinology and Metabolism, Amsterdam, University of Amsterdam, Amsterdam, the Netherlands; Laboratory Genetic Metabolic Diseases, Amsterdam UMC, University of Amsterdam, Amsterdam, the Netherlands; Department of Ophthalmology, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands; Department of Human Genetics, Section Ophthalmogenetics, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands; Department Endocrinology and Metabolism Amsterdam UMC, Department of Nutrition and Dietetics, Amsterdam University Medical Center, Amsterdam, the Netherlands; Emma Center for Personalized Medicine, Amsterdam UMC, Amsterdam, Netherlands.
Mol Ther
October 2024
Telethon Institute of Genetics and Medicine (TIGEM), 80078 Pozzuoli, Italy; Gene Therapy Joint Lab, Department of Advanced Biomedical Sciences and Department of Translational Medicine, "Federico II" University, 80131 Naples, Italy; Scuola Superiore Meridionale (SSM, School of Advanced Studies), Genomics and Experimental Medicine Program, "Federico II" University, 80131 Naples, Italy. Electronic address:
Gyrate atrophy of the choroid and retina (GACR) is due to ornithine aminotransferase (OAT) deficiency, which causes hyperornithinemia, leading to retinal pigment epithelium, followed by choroidal and retinal degeneration. Adeno-associated virus serotype 8 (AAV8) vector-mediated OAT (AAV8-OAT) liver gene transfer reduces ornithinemia in the Oat mouse model of GACR and improves retinal function and structure. Since OAT is expressed in various tissues including the retina, we investigated the efficacy of restoration of OAT expression in either retina or liver or both tissues on the retinal phenotype of Oat mice.
View Article and Find Full Text PDFOphthalmol Retina
October 2024
LV Prasad Eye Institute, Kalam Anji Reddy Campus, Anant Bajaj Retina Institute, Srimati Kanuri Santhmma Centre for Vitreoretinal Diseases, Hyderabad, India.
Objective: To profile a cohort of gyrate atrophy patients classified by widefield retinal imaging and correlate the structural, biochemical, and functional characteristics.
Design: Retrospective observational cohort study.
Participants: Sixty-five patients (129 eyes) with gyrate atrophy.
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