Comparison between activated brain regions, melanopsin and vertebrate ancient opsin (VA opsin) expression following exposure to different narrow bandwidth light treatments.

• Main Authors: Mariann Eilertsen (11502317), Benjamin G. J. Clokie (11502320), Lars O. E. Ebbesson (2622343), Cristina Tanase (11502323), Herve Migaud (308426), Jon Vidar Helvik (8028887)
• Format: Still Image
• Language: unknown
• Published: 2021
• Subjects: Biophysics; Cell Biology; Molecular Biology; Neuroscience; Physiology; Evolutionary Biology; Immunology; Developmental Biology; Science Policy; Mental Health; vertebrate ancient opsin; major receptive organs; emitting diodes technology; div >< p; putative opsin stimulation; potential direct activation; lateral tuberal nuclus; adapted salmon parr; stimulated neuronal activity; salmo salar </; photoreceptors expressing melanopsin; light sensory organs; melanopsin expressing cells; specific brain regions; similar brain regions; photosensitive brain regions; atlantic salmon (<; following light stimulation; deep brain photoreceptors; brain neural activity; activated following dark; neuronal modulation activity; overlapping expression patterns; neural activity; lateral cells; deep brain; atlantic salmon; light stimulation; neural activation; nonvisual photoreceptors; neuronal signals; melanopsin expression; teleost brain; specifically activated; salmon exposed; situ </; fos </; red light; visual world; various parts; suprachiasmatic nucleus; study aimed; strongest signal; pineal organ; pineal innervations; photoreceptive inputs; known presence; known marker; fish exposed; expression increased; either independent; different wavelengths; different spectra; apparent difference; 120 minutes; Atlantic salmon; Salmo salar
• Online Access: https://doi.org/10.1371/journal.pone.0258007.g005

A-C: In the left habenula (hab) a similar ring of cells was seen for c-fos (A), melanopsin (B) and VA opsin (C). D-F: Ventral of the caudal habenula, a small cluster of cells was detected for c-fos (D) and VA opsin (F) (see arrowheads) but not for melanopsin (E). G-I: In the caudal thalamus (th), a similar expression pattern was seen for c-fos (G) and VA opsin (I) and some melanopsin positive cells (H) (see arrowheads) were also detected. J-L: In the hypothalamus, the lateral cells of the lateral tuberal nucleus (nlt) expressed c-fos (J) after light activation and also melanopsin (K) but not VA opsin (L). Scale bars of 200 μm.