News tagged with circadian
Not just bleach: Hydrogen peroxide may tell time for living cells
Nov 03, 2009 |
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If a circadian rhythm is like an orchestra - the united expression of the rhythms of millions of cells - a common chemical may serve as the conductor, or at least as the baton.
Circadian surprise: Mechanism of temperature synchronization in drosophila
Oct 28, 2009 |
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New research reveals a pathway that links peripheral sensory tissues with a "clock" in the brain to regulate molecular processes and behaviors in response to cyclical temperature changes. The research, published by Cell Press ...
Researchers find new mechanism for circadian rhythm
Oct 20, 2009 |
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Molecules that may hold the key to new ways to fight cancer and other diseases have been found to play an important role in regulating circadian rhythm, says Liheng Shi, a researcher in Texas A&M's Department of Veterinary ...
The food-energy cellular connection revealed
Oct 15, 2009 |
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Our body's activity levels fall and rise to the beat of our internal drums—the 24-hour cycles that govern fundamental physiological functions, from sleeping and feeding patterns to the energy available to our cells. Whereas ...
New pattern in our biological clock overturns long-held theory
Oct 08, 2009 |
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(PhysOrg.com) -- University of Michigan mathematicians and their British colleagues say they have identified the signal that the brain sends to the rest of the body to control biological rhythms, a finding that overturns ...
How would Einstein use e-mail? Letter writers of yore had same correspondence patterns as e-mail users today
Sep 25, 2009 |
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You're not as different from Albert Einstein and Charles Darwin after all, at least when it comes to patterns of correspondence.
Migrating monarch butterflies 'nose' their way to Mexico
Sep 24, 2009 |
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The annual migration of monarch butterflies from across eastern North America to a specific grove of fir trees in Mexico has long fascinated scientists who have sought to understand just how these delicate ...
Genes controlling insulin can alter timing of biological clock
Sep 17, 2009 |
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(PhysOrg.com) -- Many of the genes that regulate insulin also alter the timing of the circadian clock, a new study has found.
Chemotherapy for breast cancer is associated with disruption of sleep-wake rhythm in women
Sep 01, 2009 |
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A study in the Sept.1 issue of the journal Sleep shows that the sleep-wake activity rhythms of breast cancer patients are impaired during the administration of chemotherapy. Results indicate that the first cycle of chemot ...
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 ...
