Circadian Rhythm - Physiology
Research News and Information

Saturday, November 21, 2009

Differential corticosteroid receptor regulation of mesoaccumbens dopamine efflux during the peak and nadir of the circadian rhythm: a molecular equilibrium in the midbrain?

30 Oct 2009 Corticosteroid receptor modulation of mesoaccumbens dopamine neurotransmission is believed to be a key neurobiological mechanism mediating the effects of stress in addiction. Importantly, nucleus accumbens (NAc) subregions (core and shell) are ... Read more...

Temperature entrainment of Drosophila's circadian clock involves the gene nocte and signaling from peripheral sensory tissues to the brain.

27 Oct 2009 Circadian clocks are synchronized by the natural day/night and temperature cycles. Our previous work demonstrated that synchronization by temperature is a tissue autonomous process, similar to synchronization by light. We show here that this is ... Read more...

A stretch from the periphery helps brain clocks feel the daily heat.

27 Oct 2009 In this issue of Neuron, Sehadova et al. show that synchronization of circadian clocks in the brains of Drosophila by daily temperature changes requires chordotonal organs, mechanosensory structures that function as stretch receptors in insects. ... Read more...

Latest indexed articles for 'Circadian Rhythm - Physiology'

These are the very latest articles for this heading:

• Differential corticosteroid receptor regulation of mesoaccumbens dopamine efflux during the peak and nadir of the circadian rhythm: a molecular equilibrium in the midbrain? 30 Oct 2009
• Temperature entrainment of Drosophila's circadian clock involves the gene nocte and signaling from peripheral sensory tissues to the brain. 27 Oct 2009
• A stretch from the periphery helps brain clocks feel the daily heat. 27 Oct 2009
• Time is of the essence: vascular implications of the circadian clock. 25 Oct 2009
• AMPK regulates the circadian clock by cryptochrome phosphorylation and degradation. 14 Oct 2009
• Cycling behavior and memory formation. 12 Oct 2009
• Daily electrical silencing in the mammalian circadian clock. 7 Oct 2009
• Interactions between cognition and circadian rhythms: attentional demands modify circadian entrainment. 29 Sep 2009
• Dissociation of circadian and light inhibition of melatonin release through forced desynchronization in the rat. 28 Sep 2009
• Antennal circadian clocks coordinate sun compass orientation in migratory monarch butterflies. 23 Sep 2009
• Physiology. Unraveling traveling. 23 Sep 2009
• An unexpected role for TASK-3 potassium channels in network oscillations with implications for sleep mechanisms and anesthetic action. 22 Sep 2009
• [Circadian rhythm sleep disorders] 22 Sep 2009
• Ryanodine receptors are regulated by the circadian clock and implicated in gating photic entrainment. 21 Sep 2009
• Light-dark cycle memory in the mammalian suprachiasmatic nucleus. 14 Sep 2009
• Does the weather really matter? A cohort study of influences of weather and solar conditions on daily variations of joint pain in patients with rheumatoid arthritis. 13 Sep 2009
• Phosphorylation modulates rapid nucleocytoplasmic shuttling and cytoplasmic accumulation of Neurospora clock protein FRQ on a circadian time scale. 13 Sep 2009
• Light as a modulator of cognitive brain function. 10 Sep 2009
• [Basic sleep mechanisms] 8 Sep 2009
• Loss of the apical V-ATPase a-subunit VHA-6 prevents acidification of the intestinal lumen during a rhythmic behavior in C. elegans. 7 Sep 2009

See a longer list of these articles.

Technical information about 'Circadian Rhythm'

Definition: The regular recurrence, in cycles of about 24 hours, of biological processes or activities, such as sensitivity to drugs and stimuli, hormone secretion, sleeping, feeding, etc. This rhythm seems to be set by a 'biological clock' which seems to be set by recurring daylight and darkness.

Descriptor UI: D002940

Alternative terms: Circadian Rhythm; Circadian Rhythms; Rhythm, Circadian; Rhythms, Circadian; Nyctohemeral Rhythm; Nyctohemeral Rhythms; Rhythm, Nyctohemeral; Rhythms, Nyctohemeral; Twenty-Four Hour Rhythm; Rhythm, Twenty-Four Hour; Rhythms, Twenty-Four Hour; Twenty Four Hour Rhythm; Twenty-Four Hour Rhythms; Diurnal Rhythm; Diurnal Rhythms; Rhythm, Diurnal; Rhythms, Diurnal;

Related Mesh Headings: Photoperiod; Chronotherapy;

Allowable Qualifiers: drug effects; genetics; immunology; physiology; radiation effects; ethics;

Tree Number: G07.180.562.190;

History Note: 66(64); DIURNAL RHYTHM was see under CIRCADIAN RHYTHM 1975-85 (Prov 1969-74)

Technical Notes: drug admin based on circadian rhythm = CHRONOTHERAPY: do not coord with CIRCADIAN RHYTHM or DRUG ADMINISTRATION SCHEDULE; jet lag: index JET LAG SYNDROME