Results 131 to 140 of about 114,755 (253)
Circadian Rhythms of Crawling and Swimming in the Nudibranch Mollusc Melibe leonina [PDF]
, 2014 Daily rhythms of activity driven by circadian clocks are expressed by many organisms, including molluscs. We initiated this study, with the nudibranch Melibe leonina, with four goals in mind: (1) determine which behaviors are expressed with a daily ...
Kirouac, Lauren E. +3 more
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Cell Reports, 2019 Summary: Neurodegenerative diseases commonly involve the disruption of circadian rhythms. Studies indicate that mutant Huntingtin (mHtt), the cause of Huntington’s disease (HD), disrupts circadian rhythms often before motor symptoms are evident.
Fangke Xu +5 more
doaj +1 more source
A Colorful Model of the Circadian Clock [PDF]
Cell, 2006 The migration of the colorful monarch butterfly provides biologists with a unique model system with which to study the cellular and molecular mechanisms underlying a sophisticated circadian clock. The monarch circadian clock is involved in the induction of the migratory state and navigation over long distances, using the sun as a compass.
openaire +4 more sources
A Constitutively Active Allele of Phytochrome B Maintains Circadian Robustness in the Absence of Light [PDF]
, 2015 The sensitivity of the circadian system to light allows entrainment of the clock, permitting coordination of plant metabolic function and flowering time across seasons.
Harmer, SL +4 more
core +1 more source
Stem cells and the circadian clock
Developmental Biology, 2017 The circadian timing system is a complex biological network of interacting circadian clocks that regulates 24 h rhythms of behavioral and physiological processes. One intriguing observation is that stem cell homeostasis is subject to circadian clock regulation.
Weger, Meltem +4 more
openaire +6 more sources
Alterations of clock gene RNA expression in brain Regions of a triple transgenic model of Alzheimer's Disease [PDF]
, 2017 A disruption to circadian rhythmicity and the sleep/wake cycle constitutes a major feature of Alzheimer's disease (AD). The maintenance of circadian rhythmicity is regulated by endogenous clock genes and a number of external Zeitgebers, including light ...
@corresponding, Author +14 more
core +1 more source
Ontogeny of the circadian clock in Sarcophaga crassipalpis [PDF]
, 2016 The timing of circadian rhythms is controlled by the rhythmic expression of clock genes in pacemaker neurons within the brain. Circadian gene expression and behavior can entrain to thermoperiod and photoperiod.
Short, Clancy
core
Circadian clock proteins regulate neuronal redox homeostasis and neurodegeneration [PDF]
, 2013 Brain aging is associated with diminished circadian clock output and decreased expression of the core clock proteins, which regulate many aspects of cellular biochemistry and metabolism.
Adam Q. Bauer +25 more
core +2 more sources
Entrainment of the Arabidopsis Circadian Clock [PDF]
Journal of Plant Biology, 2009 The rising and setting of the sun marks a transition between starkly contrasting environmental conditions for vegetative life. Given these differing diurnal and nocturnal environmental factors and the inherent regularity of the transition between the two, it is perhaps unsurprising that plants have developed an internal timing mechanism (known as a ...
openaire +5 more sources
ISOLATION OF CIRCADIAN CLOCK MUTANTS OF NEUROSPORA CRASSA [PDF]
, 1973 Jerry F. Feldman, Marian Hoyle
openalex +1 more source