Results 51 to 60 of about 170,034 (231)
Non-dipping nocturnal blood pressure and psychosis parameters in Parkinson disease [PDF]
, 2015 Conclusion: These results suggest that, among PD patients, a non-dipping circadian rhythm is associated with more severe symptoms of psychosis than is a dipping circadian rhythm.
Haensch, CA +5 more
core +1 more source
Genetic insights on sleep schedules: this time, it's PERsonal. [PDF]
, 2012 The study of circadian rhythms is emerging as a fruitful opportunity for understanding cellular mechanisms that govern human physiology and behavior, fueled by evidence directly linking sleep disorders to genetic mutations affecting circadian molecular ...
Chong, SY Christin +2 more
core +1 more source
The neurobiology of circadian rhythms [PDF]
Current Opinion in Pulmonary Medicine, 2009 There is growing awareness of the importance of circadian rhythmicity in various research fields. Exciting developments are ongoing in the field of circadian neurobiology linked to sleep, food intake, and memory. With the current knowledge of critical 'clock genes' (genes found to be involved in the generation of circadian rhythms) and novel techniques
Roelof A. Hut +2 more
openaire +2 more sources
Lighting as a Circadian Rhythm-Entraining and Alertness-Enhancing Stimulus in the Submarine Environment [PDF]
, 2006 The human brain can only accommodate a circadian rhythm that closely follows 24 hours. Thus, for a work schedule to meet the brain’s hard-wired requirement, it must employ a 24 hour-based program.
Bullough, J. D. +4 more
core +1 more source
Universality in Kinetic Models of Circadian Rhythms in Arabidopsis thaliana [PDF]
arXiv, 2021 Biological evolution has endowed the plant Arabidopsis thaliana with genetically regulated circadian rhythms. A number of authors have published kinetic models for these oscillating chemical reactions based on a network of interacting genes. To investigate the hypothesis that the Arabidopsis circadian dynamical system is poised near a Hopf bifurcation ...
arxiv
Robust circadian clocks from coupled protein modification and transcription-translation cycles [PDF]
P Natl Acad Sci Usa (2010) vol. 107 (52) pp. 22540-5, 2010 The cyanobacterium Synechococcus elongatus uses both a protein phosphorylation cycle and a transcription-translation cycle to generate circadian rhythms that are highly robust against biochemical noise. We use stochastic simulations to analyze how these cycles interact to generate stable rhythms in growing, dividing cells.
arxiv +1 more source
Egg-laying rhythm in Drosophila melanogaster [PDF]
, 2008 Extensive research has been carried out to understand how circadian clocks regulate various physiological processes in organisms. The discovery of clock genes and the molecular clockwork has helped researchers to understand the possible role of these ...
Dass, Shantala Hari +2 more
core +1 more source
Kernel Architecture of the Genetic Circuitry of the Arabidopsis Circadian System [PDF]
PLoS Comput. Biol. 12, e1004748 (2016), 2016 A wide range of organisms features molecular machines, circadian clocks, which generate endogenous oscillations with ~24 h periodicity and thereby synchronize biological processes to diurnal environmental fluctuations. Recently, it has become clear that plants harbor more complex gene regulatory circuits within the core circadian clocks than other ...
arxiv +1 more source
Non-circadian light inducible rhythm in Aspergillus nidulans [PDF]
, 2006 Aspergillus nidulans grown under standard laboratory conditions does not show circadian rhythmic growth. The presence of a circadian clock was demonstrated in A. nidulans at the level of gene expression (Greene et al.
Debets, Alfons J.M. +3 more
core +2 more sources
Assaying locomotor activity to study circadian rhythms and sleep parameters in Drosophila. [PDF]
, 2010 Most life forms exhibit daily rhythms in cellular, physiological and behavioral phenomena that are driven by endogenous circadian (≡24 hr) pacemakers or clocks. Malfunctions in the human circadian system are associated with numerous diseases or disorders.
Chiu, Joanna C +4 more
core +3 more sources