News tagged with circadian
How alcohol blunts the ability of hamsters to 'rise and shine'
Sep 01, 2009 |
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Chronic alcohol consumption blunts the biological clock's ability to synchronize daily activities to light, disrupts natural activity patterns and continues to affect the body's clock (circadian rhythm), even days after the ...
Scientists Discover Hunger's Timekeeper
Aug 28, 2009 |
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(PhysOrg.com) -- Researchers at Columbia and Rockefeller Universities have identified cells in the stomach that regulate the release of a hormone associated with appetite. The group is the first to show that ...
Study shines light on night-time alertness
Medicine & Health / Neuroscience
Aug 26, 2009 |
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The circadian system is not the only pathway involved in determining alertness at night. Research described in the open access journal BMC Neuroscience showed that red light, which does not stimulate the circadian system ...
Scientists identify stomach’s timekeepers of hunger
Medicine & Health / Neuroscience
Aug 14, 2009 |
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(PhysOrg.com) -- New York collaborators at Columbia and Rockefeller Universities have identified cells in the stomach that time the release of a hormone that makes animals anticipate food and eat even when they are not hungry. ...
First human gene implicated in regulating length of human sleep
Aug 13, 2009 |
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Scientists have discovered the first gene involved in regulating the optimal length of human sleep, offering a window into a key aspect of slumber, an enigmatic phenomenon that is critical to human physical and mental health.
Biological clocks of insects could lead to more effective pest control
Aug 12, 2009 |
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Researchers at Oregon State University have discovered that the circadian rhythms or biological "clocks" in some insects can make them far more susceptible to pesticides at some times of the day instead of ...
Plants' internal clock can improve climate-change models
Jul 02, 2009 |
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The ability of plants to tell the time, a mechanism common to all living beings, enables them to survive, grow and reproduce. In a study published in the latest issue of the prestigious journal Ecology Letters, an international ...
Clocking salt levels in the blood: A link between the circadian rhythm and salt balance
Jul 01, 2009 |
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New research, conducted by Charles Wingo and his colleagues, at the University of Florida, Gainsville, suggests a link between the circadian rhythm and control of sodium (salt) levels in mice.
Research reveals how cells tell time
Jun 08, 2009 |
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The fuzzy pale mold that lines the glass tubes in Dr. Yi Liu's lab doesn't look much like a clock. But this fungus has an internal, cell-based timekeeper nearly as sophisticated as a human's, allowing UT Southwestern Medical ...
The clock watcher: Circadian rhythms research is shedding light on the causes of disease and aging
May 29, 2009 |
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(PhysOrg.com) -- Embedded in our genes is a "clock" that regulates when we sleep, when we are awake and when we eat. This human clock manages what are known as circadian rhythms, 24-hour biological cycles ...
Researchers develop light-treatment device to improve sleep quality in the elderly
May 29, 2009 |
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Sleep disturbances increase as we age. Some studies report more than half of seniors 65 years of age or older suffer from chronic sleep disturbances. Researchers have long believed that the sleep disturbances ...
Circadian rhythms studies reveal new temperature regulator and track clock protein across a day
May 15, 2009 |
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Dartmouth Medical School geneticists have made new inroads into understanding the regulatory circuitry of the biological clock that synchronizes the ebb and flow of daily activities, according to two studies published May ...
Study reveals new data on circadian rhythms
May 07, 2009 |
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Fluctuations in light intensity allow restoring the regularity of circadian rhythms. This is the main conclusion of the work carried out by Javier Buceta, group leader of The SiMBioSys Group (Theoretical and In Silico Modelling ...
Maternal depression is associated with significant sleep disturbance in infants
May 01, 2009 |
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A study in the May 1 issue of the journal SLEEP suggests that babies born to mothers with depression are more likely to suffer from significant sleep disturbances at 2 weeks postpartum that continue until 6 months of age ...
PER:PER protein pair required for circadian clock function
Apr 29, 2009 |
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(PhysOrg.com) -- Scientists from Queen Mary, University of London have discovered a new protein complex operating in fruit fly circadian clocks, which may also help to regulate our own biological clocks.
