News tagged with circadian
Appetite, consumption controlled by clockwork genes at cross-purposes in flies
Dec 06, 2009 |
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One of the pioneers in research on sleep:wake circadian genes, Amita Sehgal, Ph.D., has discovered that fruit flies' appetite and consumption are controlled by two rival sets of clocks, one in neurons and the other in the ...
Scientists find clue to mystery of biological clock
Medicine & Health / Neuroscience
Nov 30, 2009 |
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How does our biological system know that it is supposed to operate on a 24-hour cycle? Scientists at the Hebrew University of Jerusalem have discovered that a tiny molecule holds the clue to the mystery.
Feeding the clock: Cycles of feeding and fasting drive circadian gene expression in the liver
Nov 25, 2009 |
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When you eat may be just as vital to your health as what you eat, found researchers at the Salk Institute for Biological Studies. Their experiments in mice revealed that the daily waxing and waning of thousands ...
Research describes connections between Circadian and metabolic systems
Nov 17, 2009 |
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(PhysOrg.com) -- A paper by University of Notre Dame biologist Giles Duffield and a team of researchers offers new insights into a gene that plays a key role in modulating the body’s Circadian system and may ...
New study describes connections between Circadian and metabolic systems
Nov 12, 2009 |
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A paper by University of Notre Dame biologist Giles Duffield and a team of researchers offers new insights into a gene that plays a key role in modulating the body's Circadian system and may also simultaneously modulate its ...
Faulty body clock may make kids bipolar
Medicine & Health / Psychology & Psychiatry
Nov 12, 2009 |
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Malfunctioning circadian clock genes may be responsible for bipolar disorder in children. Researchers writing in the open access journal BMC Psychiatry found four versions of the regulatory gene RORB that were associated with p ...
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 ...
