Results 1 to 10 of about 3,923 (179)

Single opsin driven white noise ERGs in mice [PDF]

open access: yesFrontiers in Neuroscience, 2023
PurposeElectroretinograms elicited by photopigment isolating white noise stimuli (wnERGs) in mice were measured. The dependency of rod- and cone-opsin-driven wnERGs on mean luminance was studied.MethodsTemporal white noise stimuli (containing all ...
Nina Stallwitz   +4 more
doaj   +2 more sources

Expression of Opsins of the Box Jellyfish Tripedalia cystophora Reveals the First Photopigment in Cnidarian Ocelli and Supports the Presence of Photoisomerases

open access: yesFrontiers in Neuroanatomy, 2022
Cubomedusae, or box jellyfish, have a complex visual system comprising 24 eyes of four types. Like other cnidarians, their photoreceptor cells are ciliary in morphology, and a range of different techniques together show that at least two of the eye types—
Anders Garm   +2 more
exaly   +3 more sources

Multiple opsin expression in cubozoan ocelli indicates functional redundancy [PDF]

open access: yesScientific Reports
Box jellyfish have a complex visual system comprising 24 eyes of four morphological types. The visual functions of the two large image-forming lens eyes are well-understood; however, far less is known about the two lateral pairs of smaller eyes, the pit ...
Alison R. Irwin   +4 more
doaj   +2 more sources

Light does not phase shift the circadian clock of subcutaneous adipose tissue in vitro [PDF]

open access: yesnpj Biological Timing and Sleep
The retinal photopigment melanopsin is also expressed in subcutaneous white adipose tissue (scWAT). Through melanopsin, light can modulate scWAT metabolism, but its impact on circadian phase is unclear.
Anna Edmondson   +2 more
doaj   +2 more sources

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

open access: yesFrontiers 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   +9 more
doaj   +2 more sources

Extravisual opsins in the blind shrimp Creaseria morleyi: presence and expression

open access: yesNauplius, 2023
The presence of a long-wavelength sensitive (LWS) opsin gene was demonstrated in the stygobitic crustacean Creaseria morleyi (Creaser, 1936) by PCR readings from genomic DNA.
José R. Pérez-Calderón   +5 more
doaj   +1 more source

Photopigment Bleaching Phenomenon on Fluorescein Angiography in a Patient with Impending Central Retinal Vein Occlusion

open access: yesJournal of Ophthalmic & Vision Research, 2021
Purpose: To present the second case of photopigment bleaching phenomenon in fluorescein angiography (FA) and the first case of this phenomenon due to impending central retinal vein occlusion (CRVO). Case Report: A 32-year-old healthy female noticed
Narges Hassanpoor   +2 more
doaj   +1 more source

Action spectra of zebrafish cone photoreceptors. [PDF]

open access: yesPLoS ONE, 2013
Zebrafish is becoming an increasingly popular model in the field of visual neuroscience. Although the absorption spectra of its cone photopigments have been described, the cone action spectra were still unknown. In this study we report the action spectra
Duco Endeman   +2 more
doaj   +1 more source

Light control of G protein signaling pathways by a novel photopigment. [PDF]

open access: yesPLoS ONE, 2018
Channelopsins and photo-regulated ion channels make it possible to use light to control electrical activity of cells. This powerful approach has lead to a veritable explosion of applications, though it is limited to changing membrane voltage of the ...
Tomás Osorno   +5 more
doaj   +1 more source

Chlorophyll treatment combined with photostimulation increases glycolysis and decreases oxidative stress in the liver of type 1 diabetic rats [PDF]

open access: yesBrazilian Journal of Medical and Biological Research, 2019
Photodynamic therapy (PDT) promotes cell death, and it has been successfully employed as a treatment resource for neuropathic complications of diabetes mellitus (T1DM) and hepatocellular carcinoma.
A.L.M. Wunderlich   +13 more
doaj   +1 more source

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