Results 51 to 60 of about 12,437 (221)

Iroquois complex genes induce co-expression of rhodopsins in Drosophila.

, 2008
The Drosophila eye is a mosaic that results from the stochastic distribution of two ommatidial subtypes. Pale and yellow ommatidia can be distinguished by the expression of distinct rhodopsins and other pigments in their inner photoreceptors (R7 and R8),
Mathias F Wernet, Desplan, C, Pichaud, F, Daniel Vasiliauskas, Vasiliauskas Daniel, Pichaud Franck, Celik, A, Cook Tiffany A, Vasiliauskas, D, Cook, TA, Mazzoni Esteban O, Franck Pichaud, Johnston, RJ, Wernet Mathias F, Esteban O Mazzoni, Mazzoni, EO, Arzu Celik, Robert J Johnston, Tiffany A Cook, Johnston Robert J, Claude Desplan, Celik Arzu, Desplan Claude, Wernet, MF   +23 more
core   +1 more source

Distinct and conserved prominin-1/CD133-positive retinal cell populations identified across species.

PLoS ONE, 2011
Besides being a marker of various somatic stem cells in mammals, prominin-1 (CD133) plays a role in maintaining the photoreceptor integrity since mutations in the PROM1 gene are linked with retinal degeneration.
József Jászai, Christine A Fargeas, Sylvi Graupner, Elly M Tanaka, Michael Brand, Wieland B Huttner, Denis Corbeil   +6 more
doaj   +1 more source

Development of a Zebrafish Embryo‐Based Test System for Thyroid Hormone System Disruption: 3Rs in Ecotoxicological Research

Environmental Toxicology and Chemistry, EarlyView.
Abstract There is increasing concern regarding pollutants disrupting the vertebrate thyroid hormone (TH) system, which is crucial for development. Thus, identification of TH system–disrupting chemicals (THSDCs) is an important requirement in the Organisation for Economic Co‐operation and Development (OECD) testing framework.
Lisa Gölz, Melanie Blanc‐Legendre, Maximilian Rinderknecht, Laura Behnstedt, Sara Coordes, Luisa Reger, Sacha Sire, Xavier Cousin, Thomas Braunbeck, Lisa Baumann   +9 more
wiley   +1 more source

A flexible arched artificial photoreceptor constructed by photodeformable liquid crystal polymers and its application in vision restoration

Smart Molecules, EarlyView.
A flexible arched artificial photoreceptor with high stability and biocompatibility was fabricated by integrating liquid crystal polymers with polyvinylidene fluoride‐trifluoroethylene. This device exhibits robust photoelectric responses under low‐intensity illumination and demonstrates efficacy in restoring visual responses in blind rats following ...
Yumeng Jiang, Bo Peng, Jinyu Ma, Feng Pan, Jia Wei, Lang Qin, Cheng Sun, Yanlei Yu   +7 more
wiley   +1 more source

Lipid second messengers and related enzymes in vertebrate rod outer segments

Journal of Lipid Research, 2010
Rod outer segments (ROSs) are specialized light-sensitive organelles in vertebrate photoreceptor cells. Lipids in ROS are of considerable importance, not only in providing an adequate environment for efficient phototransduction, but also in originating ...
Norma M. Giusto, Susana J. Pasquaré, Gabriela A. Salvador, Mónica G. Ilincheta de Boschero   +3 more
doaj   +1 more source

Oxidative Damage, Energy Imbalance, and Behavioral Disruptions in Girardia tigrina Exposed to Treated Sewage Effluents

Environmental Toxicology, EarlyView.
ABSTRACT This study assessed the ecotoxicological effects of treated sewage on the freshwater planarian Girardia tigrina, integrating biochemical, energetic, and behavioral biomarkers. Planarians were exposed for 48 h to different concentrations of treated sewage (12.5%, 25%, 50%, and 100%) and compared to controls using commercial water and water from
Renata M. P. Freitas, Pedro H. Carvalho, Daniela de Melo e Silva, Carlos Gravato   +3 more
wiley   +1 more source

Accelerated evolution of dim-light vision-related arrestin in deep-diving amniotes

Frontiers in Ecology and Evolution, 2022
Arrestins are key molecules involved in the signaling of light-sensation initiated by visual pigments in retinal photoreceptor cells. Vertebrate photoreceptor cells have two types of arrestins, rod arrestin, which is encoded by SAG and is expressed in ...
Xin Guo, Yimeng Cui, David M. Irwin, Yang Liu   +3 more
doaj   +1 more source

Extraocular Photoreception in Optic Lobes, Suckers, and Skin of Octopus vulgaris

Integrative Zoology, EarlyView.
Evidence of extra‐ocular photoreception in Octopus vulgaris (a) Diagram of the O. vulgaris different tissues considered: SPB, sucker proximal big; SPL, sucker proximal large; SM, sucker medium; SD, sucker distal; SK, skin; OL, optic lobes; RT, retina; (b‐d) Gene expression analysis of Ov‐GRK1 (red), Ov‐retinochrome (green), Ov‐rhodopsin (blue) mRNA ...
Valeria Maselli, Al‐Sayed Al‐Soudy, Mariangela Norcia, Stefania Galdiero, Sara Palladino, Emanuela Cirillo, Gianluca Polese, Anna Di Cosmo   +7 more
wiley   +1 more source

The 3D organisation of mitochondria in primate photoreceptors

Scientific Reports, 2021
Vertebrate photoreceptors contain large numbers of closely-packed mitochondria which sustain the high metabolic demands of these cells. These mitochondria populations are dynamic and undergo fusion and fission events. This activity serves to maintain the
Matthew J. Hayes, Dhani Tracey-White, Jaimie Hoh Kam, Michael B. Powner, Glen Jeffery   +4 more
doaj   +1 more source

Have we achieved a unified model of photoreceptor cell fate specification in vertebrates? [PDF]

Brain Research, 2008
How does a retinal progenitor choose to differentiate as a rod or a cone and, if it becomes a cone, which one of their different subtypes? The mechanisms of photoreceptor cell fate specification and differentiation have been extensively investigated in a variety of animal model systems, including human and non-human primates, rodents (mice and rats ...
Ruben, Adler, Pamela A, Raymond
openaire   +2 more sources