Summary
This study examined how glutamate — a key neurotransmitter in photic signal transmission — modulates clock gene expression in the chicken retina across different treatment durations and repetitions. Results suggest that glutamate differentially regulates Clock, Per2, and Bmal1 genes, with implications for understanding how light signals are translated into circadian rhythm adjustments at the molecular level.
Key Findings
- Clock gene expression was activated by glutamate (100 µM) treatment in a stimulus-repetition-dependent manner for both 6h and 12h treatment periods.
- Per2 gene expression exhibited an ultradian oscillation rhythm in response to glutamate treatment, while medium changes alone did not alter Per2 transcription.
- Bmal1 expression was unaffected by either medium changes or glutamate treatment, suggesting gene-specific sensitivity to glutamatergic signaling.
- Different clock genes in the Gallus gallus retina show distinct transcriptional responses to glutamate, highlighting the complexity of photic entrainment at the molecular level.
Categories
Sleep & Circadian Health: Investigates how glutamate modulates circadian clock gene expression (Clock, Per2, Bmal1) in the retina, relevant to understanding photic entrainment mechanisms.
The Science of Light: Studies the retina's role in photic signal transduction and circadian clock regulation in Gallus gallus, contributing to understanding of biological clock photoentrainment pathways.
Author(s)
MDAEDOSG DO
Related Publications
Sleep & Circadian Health
- Phototransduction by retinal ganglion cells that set the circadian clock
- The mammalian circadian timing system: organization and coordination of central and peripheral clocks
- The two‐process model of sleep regulation: a reappraisal
- Melanopsin is required for non-image-forming photic responses in blind mice
- Strange vision: ganglion cells as circadian photoreceptors
The Science of Light
- Phototransduction by retinal ganglion cells that set the circadian clock
- Color appearance models
- The mammalian circadian timing system: organization and coordination of central and peripheral clocks
- Diminished pupillary light reflex at high irradiances in melanopsin-knockout mice
- Melanopsin is required for non-image-forming photic responses in blind mice