Results 71 to 80 of about 6,619 (214)

Genetic Deletion of Zebrafish Rab28 Causes Defective Outer Segment Shedding, but Not Retinal Degeneration

Frontiers in Cell and Developmental Biology, 2020
The photoreceptor outer segment is the canonical example of a modified and highly specialized cilium, with an expanded membrane surface area in the form of disks or lamellae for efficient light detection.
Stephen P. Carter, Stephen P. Carter, Ailís L. Moran, Ailís L. Moran, David Matallanas, Gavin J. McManus, Oliver E. Blacque, Oliver E. Blacque, Breandán N. Kennedy, Breandán N. Kennedy   +9 more
doaj   +1 more source

Mechanisms of wavelength tuning in the rod opsins of deep-sea fishes

Proceedings of the Royal Society of London. Series B: Biological Sciences, 1997
The main object of this study was to investigate the molecular basis for changes in the spectral sensitivity of the visual pigments of deep-sea fishes. The four teleost species studied, Hoplostethus mediterraneus, Cataetyx laticeps, Gonostoma elongatum and Histiobranchus bathybius, are phylogenetically distant from each other and live at depths ranging
Hope, AJ, Partridge, JC, Dulai, K, Hunt, DM   +3 more
openaire   +3 more sources

Developmental dynamics of cone photoreceptors in the eel [PDF]

, 2009
Background: Many fish alter their expressed visual pigments during development. The number of retinal opsins expressed and their type is normally related to the environment in which they live.
David M Hunt, Glen Jeffery, James K Bowmaker, Ma'ayan Semo, Phillippa B Cottrill, Wayne L Davies   +5 more
core   +1 more source

Examining the role of the photopigment melanopsin in the striatal dopamine response to light

Frontiers in Systems Neuroscience
The mesolimbic dopamine system is a set of subcortical brain circuits that plays a key role in reward processing, reinforcement, associative learning, and behavioral responses to salient environmental events.
L. Sofia Gonzalez, L. Sofia Gonzalez, L. Sofia Gonzalez, Austen A. Fisher, Austen A. Fisher, Kassidy E. Grover, Kassidy E. Grover, Kassidy E. Grover, J. Elliott Robinson, J. Elliott Robinson   +9 more
doaj   +1 more source

Fractional integral-like processing in retinal cones reduces noise and improves adaptation. [PDF]

PLoS ONE, 2018
In the human retina, rod and cone cells detect incoming light with a molecule called rhodopsin. After rhodopsin molecules are activated (by photon impact), these molecules activate the rest of the signalling process for a brief period of time until they ...
Antal Martinecz, Mihoko Niitsuma
doaj   +1 more source

A Novel Tree Shrew Model of Diabetic Retinopathy

Frontiers in Endocrinology, 2022
Existing animal models with rod-dominant retinas have shown that hyperglycemia injures neurons, but it is not yet clearly understood how blue cone photoreceptors and retinal ganglion cells (RGCs) deteriorate in patients because of compromised insulin ...
Oleg S. Gorbatyuk, Priyamvada M. Pitale, Irina V. Saltykova, Iuliia B. Dorofeeva, Assylbek A. Zhylkibayev, Mohammad Athar, Preston A. Fuchs, Brian C. Samuels, Marina S. Gorbatyuk   +8 more
doaj   +1 more source

Rapid adaptive evolution of colour vision in the threespine stickleback radiation. [PDF]

, 2016
Vision is a sensory modality of fundamental importance for many animals, aiding in foraging, detection of predators and mate choice. Adaptation to local ambient light conditions is thought to be commonplace, and a match between spectral sensitivity and ...
Heckman, Nancy, Owens, Gregory L, Rennison, Diana J, Schluter, Dolph, Veen, Thor   +4 more
core  

Investigations into photoreceptor energy metabolism during experimental retinal detachment

Frontiers in Cellular Neuroscience, 2022
Retinal detachment is a sight-threatening disorder, which occurs when the photoreceptors are separated from their vascular supply. The aim of the present study was to shed light on photoreceptor energy metabolism during experimental detachment in rats ...
Glyn Chidlow, Weng Onn Chan, John P. M. Wood, Robert J. Casson   +3 more
doaj   +1 more source

Short-wavelength-sensitive 2 (Sws2) visual photopigment models combined with atomistic molecular simulations to predict spectral peaks of absorbance.

PLoS Computational Biology, 2020
For many species, vision is one of the most important sensory modalities for mediating essential tasks that include navigation, predation and foraging, predator avoidance, and numerous social behaviors.
Dharmeshkumar Patel, Jonathan E Barnes, Wayne I L Davies, Deborah L Stenkamp, Jagdish Suresh Patel   +4 more
doaj   +1 more source

An EvoDevo Study of Salmonid Visual Opsin Dynamics and Photopigment Spectral Sensitivity

Frontiers in Neuroanatomy, 2022
Salmonids are ideal models as many species follow a distinct developmental program from demersal eggs and a large yolk sac to hatching at an advanced developmental stage. Further, these economically important teleosts inhabit both marine- and freshwaters
Mariann Eilertsen, Wayne Iwan Lee Davies, Wayne Iwan Lee Davies, Dharmeshkumar Patel, Jonathan E. Barnes, Rita Karlsen, Jessica Kate Mountford, Jessica Kate Mountford, Deborah L. Stenkamp, Deborah L. Stenkamp, Jagdish Suresh Patel, Jagdish Suresh Patel, Jon Vidar Helvik   +12 more
doaj   +1 more source