News tagged with circadian rhythms
Body clocks of depressed people altered at cell level, researchers show
Every cell in our bodies runs on a 24-hour clock, tuned to the night-day, light-dark cycles that have ruled us since the dawn of humanity. The brain acts as timekeeper, keeping the cellular clock in sync ...
Medical research
May 13, 2013 |
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Research links circadian rhythms to sudden cardiac death
A fundamental discovery reported in the March 1st issue of the journal Nature, uncovers the first molecular evidence linking the body's natural circadian rhythms to sudden cardiac death (SCD). Ventricular arrhythmias, or abn ...
Cardiology
Feb 22, 2012 |
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Our internal clocks can become ticking time bombs for diabetes and obesity
If you're pulling and all-nighter to finish a term paper, a new parent up all night with a fussy baby, or simply can't sleep like you once could, then you may be snoozing on good health. That's because new research published ...
Medical research
Apr 01, 2013 |
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Cell death in retina helps tune our internal clocks
(Medical Xpress)—With every sunrise and sunset, our eyes make note of the light as it waxes and wanes, a process that is critical to aligning our circadian rhythms to match the solar day so we are alert during the day and ...
Neuroscience
Mar 05, 2013 |
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Circadian rhythms can be modified for potential treatment of disorders
(Medical Xpress)—UC Irvine-led studies have revealed the cellular mechanism by which circadian rhythms – also known as the body clock – modify energy metabolism and also have identified novel compounds that control ...
Cardiology
Jan 22, 2013 |
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More than 3,000 epigenetic switches control daily liver cycles
(Medical Xpress)—When it's dark, and we start to fall asleep, most of us think we're tired because our bodies need rest. Yet circadian rhythms affect our bodies not just on a global scale, but at the level ...
Genetics
Dec 11, 2012 |
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Re-Timer ready to reset sleep
(Medical Xpress)—Today saw the launch of Re-Timer, a wearable green light device invented by Flinders University sleep researchers to reset the body's internal clock.
Psychology & Psychiatry
Nov 21, 2012 |
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Researchers find that listening abilities depend on rhythms in the brain
(Medical Xpress)—Naturally, our brain activity waxes and wanes. When listening, this "oscillation" synchronizes to the sounds we are hearing. Researchers at the Max Planck Institute have found that this ...
Neuroscience
Nov 14, 2012 |
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New paper examines shifting gears in the circadian clock of the heart
A new study conducted by a team of scientists led by Giles Duffield, assistant professor of biological sciences and a member of the Eck Institute for Global Health at the University of Notre Dame focuses on the circadian ...
Cardiology
Oct 23, 2012 |
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The role of dopamine in sleep regulation
A group of Spanish researchers has discovered a new function of the neurotransmitter dopamine in controlling sleep regulation. Dopamine acts in the pineal gland, which is central to dictating the 'circadian rhythm' in humans—the ...
Medical research
Jun 19, 2012 |
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Women trying to have babies face different clock problem
A new Northwestern University study shows that the biological clock is not the only clock women trying to conceive should consider. The circadian clock needs attention, too.
Obstetrics & gynaecology
May 23, 2012 |
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Alteration of gene may disrupt our bodies internal rhythm, causing sleep disorder
(Medical Xpress) -- Researchers at Virginia Commonwealth University have found that a gene known as RAI1 controls one of the most important genes in circadian rhythm, CLOCK.
Pediatrics
May 16, 2012 |
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Body clock genes unravelled
International travellers, shift workers and even people suffering from obesity-related conditions stand to benefit from a key discovery about the functioning of the body's internal clock.
Genetics
May 03, 2012 |
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Coordinating the circadian clock: Researchers find that molecular pair controls time-keeping and fat metabolism
(PhysOrg.com) -- The 24-hour internal clock controls many aspects of human behavior and physiology, including sleep, blood pressure, and metabolism. Disruption in circadian rhythms leads to increased incidence of many diseases, ...
Genetics
Apr 04, 2012 |
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Circadian rhythms have profound influence on metabolic output, study reveals
By analyzing the hundreds of metabolic products present in the liver, researchers with the UC Irvine Center for Epigenetics & Metabolism have discovered that circadian rhythms – our own body clock – greatly control ...
Medical research
Mar 19, 2012 |
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Circadian rhythm
A circadian rhythm is a roughly-24-hour cycle in the biochemical, physiological or behavioral processes of living entities, including plants, animals, fungi and cyanobacteria (see bacterial circadian rhythms). The term "circadian", coined by Franz Halberg, comes from the Latin circa, "around," and diem or dies, "day", meaning literally "approximately one day." The formal study of biological temporal rhythms such as daily, tidal, weekly, seasonal, and annual rhythms, is called chronobiology.
Circadian rhythms are endogenously generated, and can be entrained by external cues, called Zeitgebers, the primary one of which is daylight. These rhythms allow organisms to anticipate and prepare for precise and regular environmental changes.
For more information about Circadian rhythm, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
