The Medical Minute: Don't be SAD over winter blues
Sunlight and seasonal changes have a great impact on human behavior. Seasonal Affective Disorder (SAD) is a form of depression -- sometimes called the winter blues -- that follows a seasonal pattern...
View ArticleCell division in cyanobacteria controlled by same kind of circadian rhythms...
(PhysOrg.com) -- A team of researchers at MIT and the University of California at San Diego has shown how cell division in a type of bacteria known as cyanobacteria is controlled by the same kind of...
View ArticleCell division orchestrated by multiple oscillating proteins, new research finds
(PhysOrg.com) -- New research takes the study of biological rhythms, like the heart beat, to a new level: the cell cycle. Scientists at Rockefeller University have proposed that the orderly succession...
View ArticleMore than meets the eye to staying awake, alert
Think twice before falling asleep alongside the glare of your computer and TV screens: exposure to dim light from ordinary room lights, computer screens and other electronic devices late at night may...
View ArticleResearchers use novel sperm stem-cell technique to produce genetically...
For two decades, the laboratory mouse has been the workhorse of biomedical studies and the only mammal whose genes scientists could effectively and reliably manipulate to study human diseases and...
View ArticleExercise may be an effective and nonpharmacologic treatment option for...
Alcohol abuse is highly disruptive of circadian rhythms, and circadian disruptions can also lead to alcohol abuse as well as relapse in abstinent alcoholics. Circadian timing in mammals is regulated by...
View ArticleDisruption of circadian rhythm could lead to diabetes
Disruption of two genes that control circadian rhythms can lead to diabetes, a researcher at UT Southwestern Medical Center has found in an animal study.
View ArticleDisrupted circadian rhythm may cause triglycerides to rise
When the circadian rhythm gets thrown off, it could come with an unexpected side effect: high triglycerides. The discovery, based on studies in mice with a "broken clock," helps to explain the normal...
View ArticleLight, circadian rhythms affect vast range of physiological, behavioral...
A new study of the genetic basis of circadian rhythms - the biological responses related to daily light exposure - has found that a few minutes of light exposure in a fungus directly affects a huge...
View ArticleCircadian rhythms: Their role and dysfunction in affective disorder
All humans are synchronised to the rhythmic light-dark changes that occur on a daily basis. Rhythms in physiological and biochemical processes and behavioural patterns persist in the absence of all...
View ArticleMoonstruck primates: Owl monkeys need moonlight as much as a biological clock...
An international collaboration led by a University of Pennsylvania anthropologist has shown that environmental factors, like temperature and light, play as much of a role in the activity of...
View ArticleMaking bees less busy: Social environment changes internal clocks
Honey bees removed from their usual roles in the hive quickly and drastically changed their biological rhythms, according to a study in the Sept. 15 issue of The Journal of Neuroscience. The changes...
View ArticleTick tock: Rods help set internal clocks, biologist says
We run our modern lives largely by the clock, from the alarms that startle us out of our slumbers and herald each new workday to the watches and clocks that remind us when it's time for meals,...
View ArticleEase into daylight savings time
With winter now behind us and the longer days of summer looming comes the annual switch to daylight saving time.
View ArticleShift work and cancer
Shift work can cause cancer. In the new issue of the Deutsches Arzteblatt International (Dtsch Arztebl Int 2010; 107[38]: 657-62), Thomas C. Erren and colleagues describe the current state of knowledge...
View ArticleTemperature rhythms keep body clocks in sync, researchers find
Researchers at UT Southwestern Medical Center have found that fluctuations in internal body temperature regulate the body's circadian rhythm, the 24-hour cycle that controls metabolism, sleep and other...
View ArticleNew regulator of circadian clock identified
Daily sleeping and eating patterns are critical to human well-being and health. Now, a new study from Concordia University has demonstrated how the brain chemical dopamine regulates these cycles by...
View ArticleDepression linked to altered activity of circadian rhythm gene
(PhysOrg.com) -- Depression appears to be associated with a molecular-level disturbance in the bodys 24-hour clock, new research suggests.
View ArticleScientists identify new mechanism regulating daily biological rhythms
Scientists from the Florida campus of The Scripps Research Institute have identified for the first time a novel mechanism that regulates circadian rhythm, the master clock that controls the body's...
View ArticleInternal body clock controls fat metabolism, study shows
UC Irvine researchers have discovered that circadian rhythms the internal body clock regulate fat metabolism. This helps explain why people burn fat more efficiently at certain times of day and...
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