Evolutionary conservation of fat metabolism pathways
By virtue of having survived, all animals-from flies to man-share a common expertise. All can distinguish times of plenty from famine and adjust their metabolism or behavior accordingly. Failure to do...
View ArticleRetinal cells thoughts to be the same are not: study
The old adage "Looks can be deceiving" certainly rings true when it comes to people. But it is also accurate when describing special light-sensing cells in the eye, according to a Johns Hopkins...
View ArticleFailure of brain's clock could play role in causing neuropsychiatric disorders
(Medical Xpress) -- Neuropsychiatric disorders are the second largest cause of morbidity and premature mortality worldwide. The scientific community has widely accepted that people who battle...
View ArticleCircadian clock may impact organ transplant success
Health care providers assess blood and tissue type as well as organ size and health to enhance transplant success. New research indicates that checklist might also need to include the circadian clock.
View ArticleBrain cell changes may cause sleep troubles in aging
Older animals show cellular changes in the brain "clock" that sets sleep and wakeful periods, according to new research in the April 25 issue of The Journal of Neuroscience. The findings may help...
View ArticleSundown syndrome-like symptoms in fruit flies may be due to high dopamine levels
Perelman School of Medicine at the University of Pennsylvania researchers have discovered a mechanism involving the neurotransmitter dopamine that switches fruit fly behavior from being active during...
View ArticleProbing sleep's drowsy mystery: Researchers stay up nights trying to...
It is one of the ironies of sleep research that scientists stay up all night to do it.
View ArticleAfter hospital discharge, other ills may land seniors back in again
(HealthDay)—The days and weeks after hospital discharge are a vulnerable time for people, with one in five older Americans readmitted within a month—often for symptoms unrelated to the original illness.
View ArticleNeurotransmitter serotonin shown to link sleep–wake cycles with the body's...
Almost all animals have a hard-wired 'body-clock' that controls biological function in cycles of approximately 24 hours. This is known as the circadian rhythm and, in mammals, it is controlled by...
View ArticleCell 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...
View ArticleBreakthrough in neuroscience could help re-wire appetite control
(Medical Xpress)—Researchers at the University of East Anglia (UEA) have made a discovery in neuroscience that could offer a long-lasting solution to eating disorders such as obesity.
View ArticleResearcher examines behavior of genes to understand breast cancer risks,...
Most often, people associate circadian rhythms with the symptoms of jet lag that occur after crossing several time zones. Circadian rhythms, which get their cues from light and darkness, can change...
View ArticleResearchers find new clue to cause of human narcolepsy
(Medical Xpress)—In 2000, researchers at the UCLA Center for Sleep Research published findings showing that people suffering from narcolepsy, a disorder characterized by uncontrollable periods of deep...
View ArticleBad sleep around full moon is no longer a myth
Many people complain about poor sleep around full moon. Scientists at the University of Basel in Switzerland now report evidence that lunar cycles and human sleep behavior are in fact connected. The...
View ArticleDrug blocks light sensors in eye that may trigger migraine attacks
For many migraine sufferers, bright lights are a surefire way to exacerbate their headaches. And for some night-shift workers, just a stroll through a brightly lit parking lot during the morning...
View ArticleEnergy levels link sleep control mechanisms
Sleep, or lack of it, can determine level of cognitive performance which is linked with accidents as well as increased risk of serious health problems. Links between cell energy levels, gene...
View ArticleSleep- and wake-dependent neuronal changes in fruit fly brains
(Medical Xpress)—The difficulty of studying sleep- and wake-dependent changes in neural activity in humans has led to comparative studies using animal models. Though MRI technology allows researchers...
View ArticleScientists detect inherited traits tied to sleep, wake, and activity cycles
In the first study of its kind, a team of international scientists led by UT Southwestern Medical Center and UCLA researchers have identified a dozen inherited traits related to sleep, wake, and...
View ArticleBrain circuit that drives sleep-wake states, sleep-preparation behavior is...
Stanford University School of Medicine scientists have identified a brain circuit that's indispensable to the sleep-wake cycle. This same circuit is also a key component of the reward system, an...
View ArticleRecovery from brain injury and better sleep go hand in hand
After a traumatic brain injury (TBI), people also experience major sleep problems, including changes in their sleep-wake cycle. A new study shows that recovering from these two conditions occurs in...
View ArticleCould fixing the body clock help people regain consciousness?
For people with severe brain injuries, researchers have found that the rhythm of daily fluctuations in body temperature is related to their level of consciousness, according to a preliminary study...
View ArticleLight exposure in the evening improves performance in the final spurt
Athletes often have to compete late in the evening, when they are no longer able to perform at their best. As reported in the journal Frontiers in Physiology, however, researchers from the University...
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