Circadian Rhythms Current Events | Circadian Rhythms News | 5
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Patients with severe sleep-disordered breathing have high odds of abnormal heart rhythms
Patients with severe sleep-disordered breathing are two to four times more likely to experience complex, abnormal heart rhythms while sleeping than individuals without the problem, according to the Sleep Heart Health Study (SHHS). view more (2006-04-14)
A Fishy Tale
Recently returned from the United States, Dr. Breandan Kennedy will establish the largest Irish facility for the study of zebrafish in the Conway Institute of Biomolecular and Biomedical Research, University College Dublin. These tiny, freshwater fish, typically found in rice paddies or slow-moving streams, can be used to study genetics and... view more... (2003-07-10)
Disturbed sleep is prevalent in widowed seniors
Widowed seniors are more likely to have disrupted sleep when studied at least four months after the loss event, according to a research abstract that will be presented on Wednesday at SLEEP 2008, the 22nd Annual Meeting of the Associated Professional Sleep Societies (APSS). view more (2008-06-11)
Java and nighttime jobs don't mix: study
Night-shift workers should avoid drinking coffee if they wish to improve their sleep, according to research published in the journal Sleep Medicine. view more (2009-11-04)
Biologists find biological clock for smell in mice
Biologists at Washington University in St. Louis have discovered a large biological clock in the smelling center of mice brains and have revealed that the sense of smell for mice is stronger at night, peaking in evening hours and waning during day light hours. view more (2006-12-19)
Daytime light exposure dynamically enhances brain responses
Exposure to light is known to enhance both alertness and performance in humans, but little is understood regarding the neurological basis for these effects, especially those associated with daytime light exposure. view more (2006-08-22)
The food-energy cellular connection revealed
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. view more (2009-10-16)
Mood Lighting: Penn Researchers Determine Role of Serotonin in Modulating Circadian Rhythm
Researchers at the University of Pennsylvania School of Medicine have determined how serotonin decreases the body's sensitivity to light and that exposure to constant darkness leads to a decrease in serotonin levels in the brain of fruit flies. view more (2005-07-11)
Health In A 24-Hour Society (p 999)
The increasing demand of many societies for people to work outside office hours could have negative influences on health, legal, and economic outcomes, suggest authors of a review article in this week's issue of THE LANCET. 20% of workers in urban societies work outside regular office hours. Shantha Rajaratnam and Josephine Arendt from the Centre... view more... (2001-09-19)
'Night owls' report more insomnia-related symptoms
Those persons who are labeled a "night owl" report more pathological symptoms related to insomnia, despite many having the opportunity to compensate for their nocturnal sleeplessness by extending their time in bed and being able to gain more total sleep time, according to a study published in the April 15th issue of the Journal of... view more... (2007-04-16)
Ventricular Regulation May Be Key to Preventing Heart Failure
A four-week study conducted on animals revealed that regulating ventricular rates and heart structure in models with irregular heart rhythms can inhibit chronic heart failure (CHF). view more (2004-11-18)
Use public funds to test jet lag drug, say researchers
The hormone melatonin has long been used to prevent and treat jet lag, but in many countries it cannot be sold because it is not licensed. Researchers in this week's BMJ argue that if use of the drug is in the public interest, then public funds should be used to get it adequately tested to be licensed. Jet lag is caused by the disturbance of... view more... (2003-02-05)
Artificial light at night stimulates breast cancer growth in laboratory mice
Results from a new study in laboratory mice show that nighttime exposure to artificial light stimulated the growth of human breast tumors by suppressing the levels of a key hormone called melatonin. view more (2005-12-20)
Bright light therapy eases bipolar depression for some
Bright light therapy can ease bipolar depression in some patients, according to a study published in the journal Bipolar Disorders. view more (2008-01-04)
Research suggests unborn children may be at risk from environmental pollution
London, UK: New research being presented at a conference opening in London today (Monday 6 September) shows that harmful environmental agents can cross the placenta to reach the developing foetus. view more (2004-09-04)
Studies point to novel target for treating arrhythmias
Abnormal heart rhythms - arrhythmias - are killers. They strike without warning, causing sudden cardiac death, which accounts for about 10 percent of all deaths in the United States. view more (2009-01-22)
Advanced cancer patients prone to poor sleep quality, daytime sleepiness, Emory study shows
Patients with advanced-stage cancer experience very poor sleep quality and often have troubling staying awake. view more (2007-06-13)
Scientists reveal new pattern in our daily clock
The findings of a study published in Science today turn a long-held theory on circadian rhythms on its head and mean that we may now be able to develop new drugs and approaches to tune the daily clock to treat sleep disorders and to aid recovery from long-distance flights. view more (2009-10-09)
Clock-shifts affect risk of heart attack
Adjusting the clocks to summer time on the last Sunday in March increases the risk of myocardial infarction in the following week. In return, putting the clocks back in the autumn reduces the risk, albeit to a lesser extent. view more (2008-10-31)
Key Found To Moonlight Romance
An international team of Australian and Israeli researchers has discovered what could be the aphrodisiac for the biggest moonlight sex event on Earth. view more (2007-10-22)
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