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307 results for “Circadian rhythms”
Figure 3 from: Espinasa L, Collins E, Finocchiaro A, Kopp J, Robinson J, Rutkowski J (2016) Incipient regressive evolution of the circadian rhythms of a cave amphipod. Subterranean Biology 20: 1-13. https://doi.org/10.3897/subtbiol.20.10010
Figure 3 - Variability in motor rhythms while in continuous darkness in three Ice Cave individuals (A–C) and four Clarksville Cave individuals (D–G) tested in the laboratory. Black boxes indicate periods while in darkness.
Figure 2 from: Espinasa L, Collins E, Finocchiaro A, Kopp J, Robinson J, Rutkowski J (2016) Incipient regressive evolution of the circadian rhythms of a cave amphipod. Subterranean Biology 20: 1-13. https://doi.org/10.3897/subtbiol.20.10010
Figure 2 - Experimental protocol and representative motor rhythms of one individual. Ice Cave individuals were subjected in the laboratory to the following conditions: Five half-cycles of darkness, followed by two cycles of light/dark during normal day/night schedules, followed by two cycles of dark/light during reverse day/night schedules, followed by a half-cycle of darkness. Black boxes indicate dark conditions while white boxes represent illuminated conditions. Movements were evaluated for each 10-minute period.
Figure 7 from: Espinasa L, Collins E, Finocchiaro A, Kopp J, Robinson J, Rutkowski J (2016) Incipient regressive evolution of the circadian rhythms of a cave amphipod. Subterranean Biology 20: 1-13. https://doi.org/10.3897/subtbiol.20.10010
Figure 7 - Specimens from Clarksville Cave (A–C) and the Ice Cave (D–F) studied in the natural environment of the cave. Under continuous darkness, most specimens had periods of activity with no clear indication of periodicity. Only in one of them (E) there was an apparent 12 hour rest period. Black boxes indicate periods while in darkness.
Figure 1 from: Espinasa L, Collins E, Finocchiaro A, Kopp J, Robinson J, Rutkowski J (2016) Incipient regressive evolution of the circadian rhythms of a cave amphipod. Subterranean Biology 20: 1-13. https://doi.org/10.3897/subtbiol.20.10010
Figure 1 - Adult and juvenile specimens of Stygobromus allegheniensis from Ice Cave #1 at Sam's Point Preserve. As is typical of cave-adapted organisms, this species is depigmented, has long appendages, and is fully eyeless. Nonetheless, it can detect light and actively avoids it.
Figure 4 from: Espinasa L, Collins E, Finocchiaro A, Kopp J, Robinson J, Rutkowski J (2016) Incipient regressive evolution of the circadian rhythms of a cave amphipod. Subterranean Biology 20: 1-13. https://doi.org/10.3897/subtbiol.20.10010
Figure 4 - Motor activity followed periods of light or darkness regardless of the time of the day. Individuals on the left (A–C) are the same as individuals on the right (A'–C'). Black boxes indicate periods while in darkness and white boxes indicate illuminated conditions.
Figure 5 from: Espinasa L, Collins E, Finocchiaro A, Kopp J, Robinson J, Rutkowski J (2016) Incipient regressive evolution of the circadian rhythms of a cave amphipod. Subterranean Biology 20: 1-13. https://doi.org/10.3897/subtbiol.20.10010
Figure 5 - Entrainment by light is apparently not functioning in the Ice Cave (A–C and A'–C') and Clarksville Cave (D–G) populations. In Stygobromus allegheniensis, the second dark period lacks the anticipation and synchronization of a period of activity, which is a hallmark of organisms possessing a light-entrained circadian rhythm. Black boxes indicate periods while in darkness and white boxes indicate illuminated conditions.
Data from: Effects of 4-Hydroxy-2,3,3',4',5-pentachlorobiphenyl (4-OH-CB107) on liver transcriptome in rats: implication in the disruption of circadian rhythm and fatty acid metabolism
Polychlorinated biphenyls (PCBs) and their hydroxylated metabolites (OH-PCBs) have been detected in tissues of both wild animals and humans. Several previous studies have suggested adverse effects of OH-PCBs on the endocrine and nervous systems in mammals. However, there have been no studies on transcriptome analysis of the effects of OH-PCBs, and thus, the whole picture and mechanisms underlying the adverse effects induced by OH-PCBs are still poorly understood. We therefore investigated the mRNA expression profile in the liver of adult male Wistar rats treated with 4-hydroxy-2,3,3',4',5-pentachlorobiphenyl (4-OH-CB107) to explore the genes responsive to OH-PCBs and to understand the potential effects of the chemical. Next-generation RNA sequencing analysis revealed changes in the expression of genes involved in the circadian rhythm and fatty acid metabolism, such as nuclear receptor subfamily 1, group D, member 1 (Nr1d1), aryl hydrocarbon receptor nuclear translocator-like protein 1 (Arntl), cryptochrome circadian clock 1 (Cry1), and enoyl-CoA hydratase and 3-hydroxyacyl-CoA dehydrogenase (Ehhadh), in 4-OH-CB107-treated rats. In addition, biochemical analysis of the plasma revealed a dose-dependent increase in the leucine aminopeptidase (LAP), indicating the onset of liver damage. These results suggest that OH-PCB exposure may induce liver injury as well as disrupt the circadian rhythm and peroxisome proliferator-activated receptor (PPAR)-related fatty acid metabolism.
Effects of Sex Hormones on Circadian Rhythm in Men and Women
ClinicalTrials.gov study NCT00001285. IPD Sharing: Not stated. Countries: 1. Publications: 3.
Improving the Sleep and Circadian Rhythms of Mechanically Ventilated Patients
ClinicalTrials.gov study NCT01284140. IPD Sharing: UNDECIDED. Countries: 1. Publications: 0.
The Effect of a Continuous 1-Hour Time Delay on Circadian Rhythms
ClinicalTrials.gov study NCT07317349. IPD Sharing: YES. Countries: 1. Publications: 0.
The CIRCADIAN Study: Evaluation of Modulating Effect of Galantamine on Circadian Rhythm in Patients With Mild to Moderate Alzheimer's Disease
ClinicalTrials.gov study NCT01181921. IPD Sharing: Not stated. Countries: 1. Publications: 0.
Effect of Confinement on Circadian Rhythms of Patients Integrated Into a Care Pathway for Bariatric Surgery
ClinicalTrials.gov study NCT04600635. IPD Sharing: UNDECIDED. Countries: 0. Publications: 1.
Circadian Rhythm Disruption Effects on Smoke Inhalation
ClinicalTrials.gov study NCT04955431. IPD Sharing: NO. Countries: 1. Publications: 0.
Cannabis Effects on Sleep, Circadian Rhythms, and Light Sensitivity in Young Adults
ClinicalTrials.gov study NCT06743373. IPD Sharing: YES. Countries: 1. Publications: 0.
Sleep and Circadian Rhythms in Mechanically Ventilated Patients
ClinicalTrials.gov study NCT01276652. IPD Sharing: NO. Countries: 1. Publications: 0.
Data from: Eyeless Mexican cavefish save energy by eliminating the circadian rhythm in metabolism
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Data from: Effects of 4-Hydroxy-2,3,3',4',5-pentachlorobiphenyl (4-OH-CB107) on liver transcriptome in rats: implication in the disruption of circadian rhythm and fatty acid metabolism
Open the record for dataset details and reuse information.
Data from: Costs of sleeping in: circadian rhythms influence cuckoldry risk in a songbird
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Circadian Rhythms in Bmal1-/- Mouse Fibroblast Cells and Liver Tissue
GEO Series GSE111696. Mus musculus. 336 samples. Type: Expression profiling by high throughput sequencing.
5' UTR-dependent m6A methylation regulates aging and circadian rhythms in Drosophila [RNA-seq whole]
GEO Series GSE197382. Drosophila melanogaster. 12 samples. Type: Expression profiling by high throughput sequencing.
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International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.