Serum NT/CT SIRT1 ratio reflects early osteoarthritis and chondrosenescence
Ann Rheum Dis. 2020 Oct;79(10):1370-1380. doi: 10.1136/annrheumdis-2020-217072. Epub 2020 Jul 14. ABSTRACT OBJECTIVE: Previous work has established that the deacetylase sirtuin-1 (SIRT1) is cleaved by cathepsin B in chondrocytes subjected to proinflammatory stress, yielding a stable but inactive N-terminal (NT) polypeptide (75SIRT1) and a C-terminal (CT) fragment. The present work examined if chondrocyte-derived NT-SIRT1 is […]
A novel AFG3L2 mutation close to AAA domain leads to aberrant OMA1 and OPA1 processing in a family with optic atrophy
Acta Neuropathol Commun. 2020 Jun 29;8(1):93. doi: 10.1186/s40478-020-00975-w. ABSTRACT Autosomal dominant optic atrophy (ADOA) is a neuro-ophthalmic condition characterized by bilateral degeneration of the optic nerves. Although heterozygous mutations in OPA1 represent the most common genetic cause of ADOA, a significant number of cases remain undiagnosed.Here, we describe a family with a strong ADOA history […]
Opa1 Deficiency Leads to Diminished Mitochondrial Bioenergetics With Compensatory Increased Mitochondrial Motility
Invest Ophthalmol Vis Sci. 2020 Jun 3;61(6):42. doi: 10.1167/iovs.61.6.42. ABSTRACT PURPOSE: Retinal ganglion cells (RGCs) are susceptible to mitochondrial deficits and also the major cell type affected in patients with mutations in the OPA1 gene in autosomal dominant optic atrophy (ADOA). Here, we characterized mitochondria in RGCs in vitro from a heterozygous B6; C3-Opa1Q285STOP (Opa1+/-) […]
Comparison of Lamina Cribrosa Morphology in Normal Tension Glaucoma and Autosomal-Dominant Optic Atrophy
Invest Ophthalmol Vis Sci. 2020 May 11;61(5):9. doi: 10.1167/iovs.61.5.9. ABSTRACT PURPOSE: To compare lamina cribrosa (LC) morphology in patients with normal tension glaucoma (NTG) and autosomal-dominant optic atrophy (ADOA). METHODS: This cross-sectional study matched 24 patients diagnosed with ADOA (24 eyes) by age and retinal nerve fiber layer thickness with 48 patients diagnosed with NTG […]
Synthesis of Dideoxy-octonic Acid and Cyclic and Acyclic Derivatives Thereof
Org Lett. 2020 May 1;22(9):3373-3376. doi: 10.1021/acs.orglett.0c00842. Epub 2020 Apr 13. ABSTRACT Oxidative cleavage of N-acetyl-neuraminic acid (Neu5Ac, 1) leads to the open chain octonic acid (ADOA, 2), which under various conditions is transformed into an acyclic acid or ester or into a six- or five-membered octonic acid lactone and lactam, respectively. All reactions proceed […]
Heterozygous type 1 Autosomal Dominant Optic Atrophy (ADOA) with OPA1 c.1936-2A>G genetic variant
J Fr Ophtalmol. 2020 Mar;43(3):e107-e108. doi: 10.1016/j.jfo.2019.08.008. Epub 2020 Jan 20. NO ABSTRACT PMID:31973973 | DOI:10.1016/j.jfo.2019.08.008
SSBP1 mutations in dominant optic atrophy with variable retinal degeneration
Ann Neurol. 2019 Sep;86(3):368-383. doi: 10.1002/ana.25550. Epub 2019 Jul 31. ABSTRACT OBJECTIVE: Autosomal dominant optic atrophy (ADOA) starts in early childhood with loss of visual acuity and color vision deficits. OPA1 mutations are responsible for the majority of cases, but in a portion of patients with a clinical diagnosis of ADOA, the cause remains unknown. […]
Associations between OPA1, MFN1, and MFN2 polymorphisms and primary open angle glaucoma in Polish participants of European ancestry
Ophthalmic Genet. 2022 Feb;43(1):42-47. doi: 10.1080/13816810.2021.1970197. Epub 2021 Aug 23. ABSTRACT BACKGROUND: Glaucomatous optic nerve damage is caused by selective death of retinal ganglion cells (RGCs). Another condition with underlying loss of RGCs is autosomal dominant optic atrophy (ADOA). Majority of ADOA patients have mutations in OPA1, gene responsible for mitochondrial fusion final steps. Clinical […]
Sustained intracellular calcium rise mediates neuronal mitophagy in models of autosomal dominant optic atrophy
Cell Death Differ. 2022 Jan;29(1):167-177. doi: 10.1038/s41418-021-00847-3. Epub 2021 Aug 13. ABSTRACT Mitochondrial dysfunction and mitophagy are often hallmarks of neurodegenerative diseases such as autosomal dominant optic atrophy (ADOA) caused by mutations in the key mitochondrial dynamics protein optic atrophy 1 (Opa1). However, the second messengers linking mitochondrial dysfunction to initiation of mitophagy remain poorly […]
In Vivo Imaging of the Schlemm’s Canal and the Response to Selective Laser Trabeculoplasty
Am J Ophthalmol. 2022 Feb;234:126-137. doi: 10.1016/j.ajo.2021.07.002. Epub 2021 Jul 18. ABSTRACT OBJECTIVE: To evaluate the presence of angle dysgenesis on ASOCT (anterior segment optical coherence tomography) (ADoA) as a predictive factor in determining outcomes of selective laser trabeculoplasty (SLT). DESIGN: A prospective clinical cohort study. SUBJECTS: Patients with juvenile-onset open-angle glaucoma (JOAG) without angle […]