Results 81 to 90 of about 6,619 (214)

Photoreceptor Outer Segment-like Structures in Long-Term 3D Retinas from Human Pluripotent Stem Cells. [PDF]

open access: yes, 2017
The retinal degenerative diseases, which together constitute a leading cause of hereditary blindness worldwide, are largely untreatable. Development of reliable methods to culture complex retinal tissues from human pluripotent stem cells (hPSCs) could ...
Angueyra, Juan M   +9 more
core   +1 more source

Meckelin 3 is necessary for photoreceptor outer segment development in rat Meckel syndrome. [PDF]

open access: yesPLoS ONE, 2013
Ciliopathies lead to multiorgan pathologies that include renal cysts, deafness, obesity and retinal degeneration. Retinal photoreceptors have connecting cilia joining the inner and outer segment that are responsible for transport of molecules to develop ...
Sarika Tiwari   +5 more
doaj   +1 more source

Mechanistically distinct mouse models for CRX-associated retinopathy [PDF]

open access: yes, 2014
Cone-rod homeobox (CRX) protein is a "paired-like" homeodomain transcription factor that is essential for regulating rod and cone photoreceptor transcription. Mutations in human CRX are associated with the dominant retinopathies Retinitis Pigmentosa (RP),
Chen, Shiming   +5 more
core   +4 more sources

Avian visual pigments: Characteristics, spectral tuning, and evolution [PDF]

open access: yes, 2007
Birds are highly visual animals with complex visual systems. In this article, we discuss the spectral characteristics and genetic mechanisms of the spectral tuning of avian visual pigments.
Hart, NS, Hunt, DM
core   +2 more sources

Evolutionary analyses of visual opsin genes in frogs and toads: Diversity, duplication, and positive selection

open access: yesEcology and Evolution, 2022
Among major vertebrate groups, anurans (frogs and toads) are understudied with regard to their visual systems, and little is known about variation among species that differ in ecology.
Ryan K. Schott   +4 more
doaj   +1 more source

The cellular fate of mutant rhodopsin: quality control, degradation and aggresome formation [PDF]

open access: yes, 2002
Mutations in the photopigment rhodopsin are the major cause of autosomal dominant retinitis pigmentosa. The majority of mutations in rhodopsin lead to misfolding of the protein.
Cheetham, ME   +3 more
core  

RdgB2 is required for dim-light input into intrinsically photosensitive retinal ganglion cells. [PDF]

open access: yes, 2015
A subset of retinal ganglion cells is intrinsically photosensitive (ipRGCs) and contributes directly to the pupillary light reflex and circadian photoentrainment under bright-light conditions.
Berson, David M   +8 more
core   +2 more sources

Eye features and retinal photoreceptors of the nocturnal aardvark (Orycteropus afer, Tubulidentata).

open access: yesPLoS ONE
The nocturnal aardvark Orycteropus afer is the only extant species in the mammalian order Tubulidentata. Previous studies have claimed that it has an all-rod retina.
Leo Peichl   +9 more
doaj   +1 more source

The Formation and Renewal of Photoreceptor Outer Segments

open access: yesCells
The visual system is essential for humans to perceive the environment. In the retina, rod and cone photoreceptor neurons are the initial sites where vision forms.
Jingjin Xu, Chengtian Zhao, Yunsi Kang
doaj   +1 more source

In conditions of limited chromophore supply rods entrap 11-cis-retinal leading to loss of cone function and cell death [PDF]

open access: yes, 2017
RPE65 is a retinoid isomerase required for the production of 11-cis-retinal, the chromophore of both cone and rod visual pigments. We recently established an R91W knock-in mouse strain as homologous animal model for patients afflicted by this mutation in
Arsenijevic, Yvan   +12 more
core  

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