Results 81 to 90 of about 100,006 (157)

Global parameter search reveals design principles of the mammalian circadian clock [PDF]

, 2008
Background: Virtually all living organisms have evolved a circadian (~24 hour) clock that controls physiological and behavioural processes with exquisite precision throughout the day/night cycle.
Locke, James C. W., Kramer, Achim, Herzel, Hanspeter, Westermark, Pål O.   +3 more
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Circadian Clocks and Pregnancy [PDF]

Frontiers in Endocrinology, 2014
The recognition that 24-h rhythmic processes (“circadian”) underlie many endocrine functions has added a fascinating new temporal dimension to our appreciation of their complexity. Research from various laboratories has revealed circadian gene expression in multiple tissues in the reproductive system of non-pregnant and pregnant mammals.
openaire   +3 more sources

Circadian and homeostatic modulation of sleep spindles in the human electroencephalogram [PDF]

, 2004
Sleep spindles are transient EEG oscillations of about 12-16 Hz. Together with slow waves, they hallmark the human non-REM sleep EEG. Sleep spindles originate in the thalamus and are suggested to have a sleep protective function by reducing sensory ...
Knoblauch, Vera
core   +1 more source

Watching the hands of the Arabidopsis biological clock [PDF]

, 2001
Oligonucleotide and cDNA microarrays have been used to analyse the mRNA levels of 8,000 genes in Arabidopsis thaliana throughout the day/night cycle. Genes involved in signal transduction and in various metabolic pathways were found to be coordinately ...
Davis, Seth J., Davis, S J, Millar, A. J. (Andrew J.), Millar, A J; id_orcid   +3 more
core   +1 more source

Publisher Correction: Circadian lipid and hepatic protein rhythms shift with a phase response curve different than melatonin

Nature Communications, 2022
Brianne A. Kent, Shadab A. Rahman, Melissa A. St. Hilaire, Leilah K. Grant, Melanie Rüger, Charles A. Czeisler, Steven W. Lockley   +6 more
doaj   +1 more source

Reproducible changes in the gut microbiome suggest a shift in microbial and host metabolism during spaceflight

Microbiome, 2019
Background Space environment imposes a range of challenges to mammalian physiology and the gut microbiota, and interactions between the two are thought to be important in mammalian health in space.
Peng Jiang, Stefan J. Green, George E. Chlipala, Fred W. Turek, Martha Hotz Vitaterna   +4 more
doaj   +1 more source

Experimental validation of a predicted feedback loop in the multi-oscillator clock of Arabidopsis thaliana [PDF]

, 2006
Our computational model of the circadian clock comprised the feedback loop between LATE ELONGATED HYPOCOTYL (LHY), CIRCADIAN CLOCK ASSOCIATED 1 (CCA1) and TIMING OF CAB EXPRESSION 1 (TOC1), and a predicted, interlocking feedback loop involving TOC1 and a
Nagy, Ferenc, Turner, Matthew S., Andrew J Millar, Gould, Peter D, Anthony Hall, Locke, James C. W., Kozma-Bognar, Laszlo, Balázs Fehér, Ferenc Nagy, Hall, Anthony, Matthew S Turner, Kevei, Eva, László Kozma‐Bognár, Gould, Peter D., Turner, Matthew S, James C W Locke, Peter D Gould, Millar, Andrew J; id_orcid, Millar, A. J. (Andrew J.), Éva Kevei, Locke, James C W, Feher, Balazs   +21 more
core   +1 more source

Murray Law–Based Quantitative Flow Ratio Proficiency in Clinical Practice: Validating Routine Diagnostic Performance and Analyzing Learning Curve Thresholds

Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease
Background Although second‐generation Murray law–based quantitative flow ratio uses artificial intelligence–driven automation to improve angiography‐derived physiological assessment, the impact of operator learning curves on its diagnostic reliability in
Dan Deng, Yue Feng, Min Zeng, Shuhui Chen, Haoran Qin, Yanxiu Chen, Lihua Li, Jianfang Zhu, Chen Wan, Hao Gao, Feng Liu, Dali Yi, Wanchun Luo, William Kongto Hau, Shengxian Tu, Zhihui Zhang   +15 more
doaj   +1 more source

Associations between non-insulin-based insulin resistance indices and heart failure prevalence in overweight/obesity adults without diabetes mellitus: evidence from the NHANES 2001–2018

Lipids in Health and Disease
Background The triglyceride glucose (TyG) index and triglyceride-to-high-density lipoprotein cholesterol (TG/HDL-C) ratio are recognized as simple non-insulin-based insulin resistance indices. Our study aimed to explore the relationship between these two
Di-yu Cui, Chao Zhang, Yi Chen, Gang-zhen Qian, Wan-xiang Zheng, Zhi-hui Zhang, Yu Zhang, Ping Zhu   +7 more
doaj   +1 more source

The circadian clock of the Drosophila melanogaster eye regulates morning anticipation and is selectively linked to the circadian neuronal network

, 2023
How multiple circadian clocks within the circadian neuronal network (CNN) converge to regulate behaviour remains elusive. Circadian behaviour is an organism’s response to environmental cues (e.g., day/night cycles), regulated by the circadian clock, a ...
Schofield, Mia
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