ArticleHippocampus2021
Orexin (hypocretin) mediates light-dependent fluctuation of hippocampal function in a diurnal rodent.
Article in Hippocampus, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
6 citing papers in PubMed, 8 citations in OpenAlex.
- Central hypocretin/orexin administration alleviates sleep/wake disturbances, anhedonia, and neuroinflammation in an animal model of seasonal affective disorder.Annals of medicine · 2026Article
- Small molecule orexin agonist ROXA-47 enhances learning and memory in mice.Pharmacology, biochemistry, and behavior · 2026Article
- Spatial mRNA expression patterns of orexin receptors in the dorsal hippocampus.Scientific reports · 2024Article
- A Light-Responsive Neural Circuit Suppresses Feeding.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2024Article
- Diurnal Characteristics of the Orexin System Genes and Its Effects on Pathology at Early Stage in 3xTg-AD Mice.Neuromolecular medicine · 2023Article
- Effects of light therapy on sleep/wakefulness, daily rhythms, and the central orexin system in a diurnal rodent model of seasonal affective disorder.Journal of affective disorders · 2023Article
Corrections and comments
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Authors and funding
7 authors at 2 institutions in 1 country.
Funding
Abstract
Environmental lighting conditions play a central role in cognitive function, but the underlying mechanisms remain unclear. Utilizing a diurnal rodent model, the Nile grass rat (Arvicanthis niloticus), we previously found that daytime light intensity affects hippocampal function in this species in a manner similar to its effects in humans. Compared to animals housed in a 12:12 h bright light-dark (brLD) cycle, grass rats kept in a 12:12 h dim light-dark (dimLD) cycle showed impaired spatial memory in the Morris water maze (MWM) and reduced CA1 apical dendritic spine density. The present study explored the neural substrates mediating the effects of daylight intensity on hippocampal function focusing on the hypothalamic orexin (hypocretin) system. First, animals housed in dimLD were treated with daily intranasal administration of orexin A peptide over five training days of the MWM task. Compared to vehicle controls, this treatment led to superior spatial memory accompanied by increased phosphorylation of Ca
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.