Visual Function and Inner Retinal Structure in Relation to Birth Factors in Autosomal Dominant Optic Atrophy
Invest Ophthalmol Vis Sci. 2023 Jul 3;64(10):32. doi: 10.1167/iovs.64.10.32. ABSTRACT PURPOSE: The extreme variation in expressivity of autosomal dominant optic atrophy (ADOA) is unexplained. It is present from early childhood, why there is reason to search for pre- and perinatal risk factors for poor vision in ADOA. The process of ganglion cell pruning in the […]
New avenues for therapy in mitochondrial optic neuropathies
Ther Adv Rare Dis. 2021 Jul 19;2:26330040211029037. doi: 10.1177/26330040211029037. eCollection 2021 Jan-Dec. ABSTRACT Mitochondrial optic neuropathies are a group of optic nerve atrophies exemplified by the two commonest conditions in this group, autosomal dominant optic atrophy (ADOA) and Leber’s hereditary optic neuropathy (LHON). Their clinical features comprise reduced visual acuity, colour vision deficits, centro-caecal scotomas […]
In Vivo Efficacy and Safety Evaluations of Therapeutic Splicing Correction Using U1 snRNA in the Mouse Retina
Cells. 2023 Mar 21;12(6):955. doi: 10.3390/cells12060955. ABSTRACT Efficacy and safety considerations constitute essential steps during development of in vivo gene therapies. Herein, we evaluated efficacy and safety of splice factor-based treatments to correct mutation-induced splice defects in an Opa1 mutant mouse line. We applied adeno-associated viruses to the retina. The viruses transduced retinal cells with […]
OPA1 disease-causing mutants have domain-specific effects on mitochondrial ultrastructure and fusion
Proc Natl Acad Sci U S A. 2023 Mar 21;120(12):e2207471120. doi: 10.1073/pnas.2207471120. Epub 2023 Mar 16. ABSTRACT Inner mitochondrial membrane fusion and cristae shape depend on optic atrophy protein 1, OPA1. Mutations in OPA1 lead to autosomal dominant optic atrophy (ADOA), an important cause of inherited blindness. The Guanosin Triphosphatase (GTPase) and GTPase effector domains […]
Rescue of cell death and inflammation of a mouse model of complex 1-mediated vision loss by repurposed drug molecules
Hum Mol Genet. 2017 Dec 15;26(24):4929-4936. doi: 10.1093/hmg/ddx373. ABSTRACT Inherited mitochondrial optic neuropathies, such as Leber’s hereditary optic neuropathy (LHON) and Autosomal dominant optic atrophy (ADOA) are caused by mutant mitochondrial proteins that lead to defects in mitochondrial complex 1-driven ATP synthesis, and cause specific retinal ganglion cell (RGC) loss. Complex 1 defects also occur […]
Processing of OPA1 with a novel N-terminal mutation in patients with autosomal dominant optic atrophy: Escape from nonsense-mediated decay
PLoS One. 2017 Aug 25;12(8):e0183866. doi: 10.1371/journal.pone.0183866. eCollection 2017. ABSTRACT Autosomal Dominant Optic Atrophy (ADOA) is the most common dominantly inherited optic neuropathy. In the majority of patients it is caused by OPA1 mutations and those predicted to introduce a premature termination codon (PTC) are frequently detected. Transcripts containing PTC may be degraded by nonsense-mediated […]
A novel ADOA-associated OPA1 mutation alters the mitochondrial function, membrane potential, ROS production and apoptosis
Sci Rep. 2017 Jul 18;7(1):5704. doi: 10.1038/s41598-017-05571-y. ABSTRACT Autosomal dominant optic atrophy (ADOA) is a dominantly inherited optic neuropathy, affecting the specific loss of retinal ganglion cells (RGCs). The majority of affected cases of ADOA are associated with mutations in OPA1 gene. Our previous investigation identified the c.1198C > G (p.P400A) mutation in the OPA1 […]
Pupillometric evaluation of the melanopsin containing retinal ganglion cells in mitochondrial and non-mitochondrial optic neuropathies
Mitochondrion. 2017 Sep;36:124-129. doi: 10.1016/j.mito.2017.07.003. Epub 2017 Jul 14. ABSTRACT In recent years, chromatic pupillometry is used in humans to evaluate the activity of melanopsin expressing intrinsic photosensitive retinal ganglion cells (ipRGCs). Blue light is used to stimulate the ipRGCs and red light activates the rod/cone photoreceptors. The late re-dilation phase of pupillary light reflex […]
Meta-analysis of genotype-phenotype analysis of OPA1 mutations in autosomal dominant optic atrophy
Mitochondrion. 2019 May;46:262-269. doi: 10.1016/j.mito.2018.07.006. Epub 2018 Aug 27. ABSTRACT Autosomal Dominant Optic Atrophy (ADOA) is a neuro-ophthalmic disease characterized by progressive bilateral vision loss, pallor of the optic disc, central vision loss, and impairment of color vision. Additionally, a small percentage of patients experience hearing loss and ataxia, while recent studies suggest disruption of […]
Sensitive Analysis of Sialic Acid and Related Compound by Hydrophilic Interaction Liquid Chromatography Using Fluorescence Detection after Derivatization with DBD-PZ
Anal Sci. 2018;34(7):841-844. doi: 10.2116/analsci.18N001. ABSTRACT N-Acetylneuraminic acid (NANA) has been reported to react with hydrogen peroxide in vitro to produce 4-(acetylamino)-2,4-dideoxy-D-glycero-D-galacto-octonic acid (ADOA). We labeled NANA and ADOA with 4-(N,N-dimethylaminosulfonyl)-7-piperazino-2,1,3-benzoxadiazole (DBD-PZ) for simultaneous detection. The derivatized NANA and ADOA were separated using hydrophilic interaction liquid chromatography (HILIC) with fluorescence detection. The calibration curves of […]