Results 31 to 40 of about 3,871 (146)

Mitochondrial and Lipid Droplet Dynamics Regulate Intra- and Intercellular Fatty Acid Trafficking

open access: yesMolecular & Cellular Oncology, 2018
Imaging of fatty acid (FA) trafficking revealed that FAs stored in lipid droplets were delivered to mitochondria when the cells were starved. This delivery required cytoplasmic lipases and mitochondrial fusion activity, whereas lipid droplets were ...
Sarah Cohen   +2 more
doaj   +1 more source

Ischemia-induced cleavage of OPA1 at S1 site aggravates mitochondrial fragmentation and reperfusion injury in neurons

open access: yesCell Death and Disease, 2022
Neuronal mitochondrial dynamics are disturbed after ischemic stroke. Optic atrophy 1 (OPA1) and its GTPase activity are involved in maintaining mitochondrial cristae and inner membrane fusion.
Xiang Li   +8 more
doaj   +1 more source

Restoration of L-OPA1 alleviates acute ischemic stroke injury in rats via inhibiting neuronal apoptosis and preserving mitochondrial function

open access: yesRedox Biology, 2020
Background: Ischemic stroke can induce changes in mitochondrial morphology and function. As a regulatory gene in mitochondria, optic atrophy 1 (OPA1) plays a pivotal role in the regulation of mitochondrial dynamics and other related functions.
Yongxing Lai   +11 more
doaj   +1 more source

Altered Mitochondrial Opa1-Related Fusion in Mouse Promotes Endothelial Cell Dysfunction and Atherosclerosis

open access: yesAntioxidants, 2022
Flow (shear stress)-mediated dilation (FMD) of resistance arteries is a rapid endothelial response involved in tissue perfusion. FMD is reduced early in cardiovascular diseases, generating a major risk factor for atherosclerosis.
Ahmad Chehaitly   +15 more
doaj   +1 more source

Optic Atrophy 1 Controls Human Neuronal Development by Preventing Aberrant Nuclear DNA Methylation

open access: yesiScience, 2020
Summary: Optic atrophy 1 (OPA1), a GTPase at the inner mitochondrial membrane involved in regulating mitochondrial fusion, stability, and energy output, is known to be crucial for neural development: Opa1 heterozygous mice show abnormal brain development,
Safak Caglayan   +15 more
doaj   +1 more source

Activation of OPA1 Processing in Differentiated Myoblast Cells [PDF]

open access: yes, 2023
Mitochondria are eukaryotic cellular organelles that play a role in energy production, apoptosis, integrated stress response, and aging. Mitochondrial dynamics is the physical fusion (interconnection) and fission (fragmentation) of mitochondria within a ...
Carrillo, Omar Agustin
core   +1 more source

Oxidization of optic atrophy 1 cysteines occurs during heart ischemia-reperfusion and amplifies cell death by oxidative stress

open access: yesRedox Biology, 2023
During cardiac ischemia-reperfusion, excess reactive oxygen species can damage mitochondrial, cellular and organ function. Here we show that cysteine oxidation of the mitochondrial protein Opa1 contributes to mitochondrial damage and cell death caused by
Martina Semenzato   +9 more
doaj   +1 more source

Opa1 is required for proper mitochondrial metabolism in early development. [PDF]

open access: yesPLoS ONE, 2013
Opa1 catalyzes fusion of inner mitochondrial membranes and formation of the cristae. OPA1 mutations in humans lead to autosomal dominant optic atrophy. OPA1 knockout mice lose viability around embryonic day 9 from unknown reasons, indicating that OPA1 is
Jennifer J Rahn   +2 more
doaj   +1 more source

Autosomal dominant optic atrophy: A novel treatment for OPA1 splice defects using U1 snRNA adaption

open access: yesMolecular Therapy: Nucleic Acids, 2021
Autosomal dominant optic atrophy (ADOA) is frequently caused by mutations in the optic atrophy 1 (OPA1) gene, with haploinsufficiency being the major genetic pathomechanism. Almost 30% of the OPA1-associated cases suffer from splice defects.
Christoph Jüschke   +5 more
doaj   +1 more source

OPA1 increases the risk of normal but not high tension glaucoma

open access: yes, 2010
Background Primary open angle glaucoma is a progressive optic neuropathy characterised by the selective loss of retinal ganglion cells, pathological optic disc cupping and visual field defects.
Griffiths, P. G.   +6 more
core   +1 more source

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