scholarly journals Measurement of electroretinogram responses in OPA1‐associated autosomal dominant optic atrophy using a handheld device

2022 ◽  
Vol 100 (S267) ◽  
Author(s):  
Remi Rufus‐Toye ◽  
Neringa Jurkute ◽  
Shaun Leo ◽  
Omar Mahroo ◽  
Patrick Yu‐Wai‐Man
Cell Calcium ◽  
2015 ◽  
Vol 57 (1) ◽  
pp. 49-55 ◽  
Author(s):  
László Fülöp ◽  
Anikó Rajki ◽  
Erika Maka ◽  
Mária Judit Molnár ◽  
András Spät

2012 ◽  
Vol 68 (2) ◽  
pp. 108-110 ◽  
Author(s):  
X. Ayrignac ◽  
C. Liauzun ◽  
G. Lenaers ◽  
D. Renard ◽  
P. Amati-Bonneau ◽  
...  

Author(s):  
Christoph Jüschke ◽  
Thomas Klopstock ◽  
Claudia B. Catarino ◽  
Marta Owczarek-Lipska ◽  
Bernd Wissinger ◽  
...  

Brain ◽  
2006 ◽  
Vol 130 (4) ◽  
pp. 1029-1042 ◽  
Author(s):  
M. V. Alavi ◽  
S. Bette ◽  
S. Schimpf ◽  
F. Schuettauf ◽  
U. Schraermeyer ◽  
...  

2019 ◽  
pp. 29-34
Author(s):  
Matthew J. Thurtell ◽  
Robert L. Tomsak

There is a broad differential diagnosis for bilateral optic neuropathies, including inflammatory, ischemic, compressive, traumatic, nutritional, toxic, and inherited causes. In this chapter, we begin by discussing the approach to the patient who has bilateral symmetric optic neuropathies. We next review the genetic basis, clinical features, and natural history of autosomal dominant optic atrophy. We list other deficits that can occur in up to 20% of patients with this condition, which can include sensorineural hearing loss, ataxia, myopathy, peripheral neuropathy, spastic paraparesis, and chronic progressive external ophthalmoplegia. Lastly, we discuss the evaluation and management approach for autosomal dominant optic atrophy.


Author(s):  
Marta Zaninello ◽  
Konstantinos Palikaras ◽  
Aggeliki Sotiriou ◽  
Nektarios Tavernarakis ◽  
Luca Scorrano

AbstractMitochondrial 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 characterized. Here, we show in mammalian and nematode neurons that Opa1 mutations trigger Ca2+-dependent mitophagy. Deletion or expression of mutated Opa1 in mouse retinal ganglion cells and Caenorhabditis elegans motor neurons lead to mitochondrial dysfunction, increased cytosolic Ca2+ levels, and decreased axonal mitochondrial density. Chelation of Ca2+ restores mitochondrial density in neuronal processes, neuronal function, and viability. Mechanistically, sustained Ca2+ levels activate calcineurin and AMPK, placed in the same genetic pathway regulating axonal mitochondrial density. Our data reveal that mitophagy in ADOA depends on Ca2+-calcineurin-AMPK signaling cascade.


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