Popular Circadian Rhythms News and Current Events

Popular Circadian Rhythms News and Current Events, Circadian Rhythms News Articles.
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A smartphone application can help in screening for atrial fibrillation
A smartphone application (app) can help in screening for atrial fibrillation, according to late breaking results from the DIGITAL-AF study presented today at ESC Congress. (2018-08-25)

When a child's heart stops, onset time of abnormal rhythms is crucial
Ventricular fibrillation, the life-threatening disordered heart rhythms that may accompany full cardiac arrest, occurs more frequently in children than commonly believed, according to a large national pediatric study. Furthermore, not all ventricular fibrillation (VF) is the same. VF is more often fatal if it is not the initial heart rhythm detected at the start of cardiac arrest, but instead develops later during the arrest, typically during resuscitation. (2006-05-31)

The evolution of Dark-fly
On Nov. 11, 1954, Syuiti Mori turned out the lights on a small group of fruit flies. More than 60 years later, the descendants of those flies have adapted to life without light. These flies -- a variety known as 'Dark-fly' -- outcompete their light-loving cousins when they live together in constant darkness, according to research reported in G3: Genes|Genomes|Genetics. Re-playing the evolution of Dark-fly identified the genomic regions that contribute to its success in the dark. (2016-02-04)

Quality of children's sleep may affect eating habits and weight
Several measures of poor sleep quality were associated with higher body mass index (BMI) in children, according to data presented at the American Association for Cancer Research Special Conference Obesity and Cancer: Mechanisms Underlying Etiology and Outcomes, held Jan. 27-30. (2018-01-26)

Alignment of mother and offspring body clock could prevent diseases such as heart disease and obesity
The care provided by a mother can impact the body clock and health of offspring after birth, according to new research published in The Journal of Physiology. By reducing abnormalities in the body clock of offspring, it may be possible to develop therapies for serious lifestyle-related diseases, such as heart disease and obesity. (2018-05-11)

Financial stress is associated with migraine, if you have specific circadian gene variants
People with a specific variation in the CLOCK gene have more migraines under financial stress. This work, the first time that the genetics of circadian rhythms has been shown to have an effect on migraine, is presented at the ECNP conference in Paris. (2017-09-02)

Circadian clock plays unexpected role in neurodegenerative diseases
Northwestern University researchers induced jet lag in a fruit fly model of Huntington disease and found that jet lag protected the flies' neurons. (2019-04-02)

Putting animals in their best light -- USC researchers find some shades of LED lamps threaten wildlife
A USC research team identifies harmful effects to wildlife as LED lights proliferate. Some hues, including blues and whites, imperil creatures while other wavelengths are more benign. They devised an interactive web-based tool to help people make wildlife-friendly choices in outdoor lighting. (2018-06-12)

Outdoor light at night linked with increased breast cancer risk in women
Women who live in areas with higher levels of outdoor light at night may be at higher risk for breast cancer than those living in areas with lower levels, according to a large long-term study from Harvard T.H. Chan School of Public Health. The link was stronger among women who worked night shifts. (2017-08-17)

Research shows why we struggle to get good night's sleep as we get older
New research has identified the way age impairs the ability of the circadian clock in mammals to re-set itself when exposed to light, resulting in disruption to sleeping patterns and consequent threats to wellbeing. (2018-03-27)

Shedding light on new treatment options for perimenopausal depression and sleep problems
Light therapy has long been a recognized treatment option for depression. But can it help perimenopausal women struggling with depression and sleep problems as the result of hormone changes? A new study from the University of California suggests that it can by altering a woman's natural sleep/wake cycle. Preliminary study results will be presented during The North American Menopause Society (NAMS) Annual Meeting in San Diego, Oct. 3-6, 2018. (2018-10-03)

Later circadian timing of food intake is associated with increased body mass index
BWH investigators examine the relationships between body fat and body mass index, and the timing of food consumption, to time of day and to the body's circadian or body clock. (2017-09-08)

'Cyclops' algorithm spots daily rhythms in cells
Humans, like virtually all other complex organisms on Earth, have adapted to their planet's 24-hour cycle of sunlight and darkness. That circadian rhythm is reflected in human behavior, of course, but also in the molecular workings of our cells. Now scientists have developed a powerful tool for detecting and characterizing those molecular rhythms -- a tool that could have many new medical applications. (2017-04-25)

Distinct brain rhythms, regions help us reason about categories
The brain's ability to categorize based on straightforward resemblance or on a more abstract similarity arises from its use of distinct rhythms, at distinct times, in distinct parts of the prefrontal cortex. Gamma in one region handles sensory comparisons, but beta in another region considers the less obvious ways things go together. (2018-01-25)

Meal times may be key to managing malaria, parasite study shows
Malaria infections might be brought under control by managing the meal times of infected people or animals, a study suggests. (2018-03-09)

From lullabies to live concerts: How music and rhythm shape our social brains
A universal sign of motherhood is the lullaby. The world over, mothers sing to their babies, whether Twinkle Twinkle Little Star, their favorite song from the radio, or even random notes. This universality makes the simple lullaby a great window into the human mind. In a new study, cognitive neuroscientists found that lullabies soothe both moms and babies simultaneously, while playsongs increase babies' attention and displays of positive emotion toward their mothers. (2018-03-27)

Feeling sleepy is all in your genes
Genes responsible for our 24-hour body clock influence not only the timing of sleep, but also appear to be central to the actual restorative process of sleep, according to research published in the online open access journal BMC Neuroscience. The study identified changes in the brain that lead to the increased desire and need for sleep during time spent awake. (2007-10-17)

Revisiting existing drugs finds molecules that control body clocks
Using drug repurposing, a team of researchers led by animal biologists at Nagoya University has discovered compounds that can either shorten or lengthen the circadian rhythm in human cells. A hormone, also known as a common anti-aging supplement demonstrated period-shortening activities, and when it was fed to mice, jet lag symptoms were significantly reduced. (2018-04-18)

Timing is everything, to our genes
Salk scientists discover critical gene activity follows a biological clock, affecting diseases of the brain and body. (2018-02-08)

Circadian rhythm-metabolism link discovered
UC Irvine researchers have found a molecular link between circadian rhythms -- our own body clock -- and metabolism. The discovery reveals new possibilities for the treatment of diabetes, obesity and other related diseases. (2008-07-24)

Secrets of succulents' water-wise ways revealed
Plant scientists at the University of Liverpool have revealed new insights into the mechanisms that allow certain plants to conserve water and tolerate drought. The research, which is published in The Plant Cell, could be used to help produce new crops that can thrive in previously inhospitable, hot and dry regions across the world. (2017-11-16)

Mouse mutants with sleep defects may shed light on the mysteries of sleep
The first unbiased genetic screen for sleep defects in mice has yielded two interesting mutants, Sleepy, which sleeps excessively, and Dreamless, which lacks rapid eye movement (REM) sleep. The findings are the first step towards discovering the biochemistry that controls the switch from wakefulness to sleep, the researchers say. (2016-11-02)

Salk scientists curb growth of cancer cells by blocking access to key nutrients
Salk researchers have discovered how to curb the growth of cancer cells by blocking the cells' access to certain nutrients. (2018-01-10)

Wound healing guided by cellular clock
Providing insight into why wound healing outcomes vary depending on the time of the injury, researchers report that fibroblasts -- cells critical to this process -- contribute to healing differently based on cues from their circadian clocks. (2017-11-08)

UCI-led study reveals how fasting can improve overall health
In a University of California, Irvine-led study, researchers found evidence that fasting affects circadian clocks in the liver and skeletal muscle, causing them to rewire their metabolism, which can ultimately lead to improved health and protection against aging-associated diseases. The study was published recently in Cell Reports. (2019-01-14)

Early to bed, early to rise
In an upcoming G&D paper, a team of German scientists presents a genetic basis for understanding human morning lark behavior. Dr. Achim Kramer (Charité Universitaetsmedizin Berlin) and colleagues have uncovered a genetic cause for the human familial advanced sleep phase syndrome (FASPS), which causes people to both go to sleep and wake up very early. (2006-09-19)

Searching for shut eye: Penn study identifies possible sleep gene
While scientists and physicians know what happens if you don't get six to eight hours of shut-eye a night, investigators have long been puzzled about what controls the actual need for sleep. Researchers might have an answer, at least in fruit flies. In a recent study of fruit flies, they identified a gene that controls sleep. (2008-07-29)

Study: Length of children's sleep duration varies; can influence their weight, behavior
The duration of a child's sleep can vary, depending on the time of day, week and year. Further, children who don't get enough nightly sleep are more likely to be overweight and have behavioral problems. (2008-01-01)

Melatonin may help treat blood cancers
Researchers have examined the potential benefits of melatonin, a hormone made by a small gland in the brain, for treating blood cancers such as leukemia and lymphoma. (2017-09-01)

Heart derived stem cells develop into heart muscle
Dutch researchers at University Medical Center Utrecht and the Hubrecht Institute have succeeded in growing large numbers of stem cells from adult human hearts into new heart muscle cells. A breakthrough in stem cell research. Until now, it was necessary to use embryonic stem cells to make this happen. The findings are published in the latest issue of the journal Stem Cell Research. (2008-04-23)

Bright light therapy at midday helped patients with bipolar depression
Daily exposure to bright white light at midday significantly decreased symptoms of depression and increased functioning in people with bipolar disorder, a recent Northwestern Medicine study found. More than 68 percent of patients who received midday bright light achieved a normal level of mood, compared to 22.2 percent of patients who received a dim placebo light. (2017-10-10)

Despite benefits, half of parents against later school start times
Leading pediatrics and sleep associations agree: Teens shouldn't start school so early. Yet University of Michigan research finds parents are split almost down the middle on whether they support delays in school start times that might permit their 13- to 17-year-olds to sleep later on school days. (2017-08-18)

University of Guelph researchers discover why females have heart health advantage
University of Guelph Prof. Tami Martino has revealed in a first-ever study the biological reasons why females have a heart health advantage over men and it's tied to ovarian hormones. Essentially the interplay between female ovarian hormones and a circadian 'clock' molecule protects the heart health of women until they reach menopause. (2017-10-04)

Study: Sleeping sickness not just a sleeping disorder
An international study from the Instituto de Medicina Molecular shows one of Africa's most lethal diseases is actually a circadian rhythm disorder caused by the acceleration of biological clocks controlling a range of vital functions besides sleep. (2018-01-04)

What makes circadian clocks tick?
Circadian clocks arose as an adaptation to dramatic swings in daylight hours and temperature caused by the Earth's rotation, but we still don't fully understand how they work. During the 62nd Biophysical Society Meeting, held Feb. 17-21, Andy LiWang, University of California, Merced, will present his lab's work studying the circadian clock of blue-green colored cyanobacteria. LiWang's group discovered that how the proteins move hour by hour is central to cyanobacteria's circadian clock function. (2018-02-18)

Mapping neural networks to strengthen circadian rhythms
While the evidence behind this age-related weakening of the circadian rhythm has been established in medical literature, the mechanisms behind it, and the connectivity structure of the neurons, have remained elusive. To better understand these neuronal and hormonal mechanisms and help develop potential treatments, researchers have conducted experimental analyses of the SCN's connections, with the goal of determining its degree of heterogeneity. They discuss their work in this week's CHAOS. (2016-05-31)

Clock protein controls daily cycle of gene expression by regulating chromosome loops
It's well known that the human body functions on a 24-hour schedule. The up-and-down daily cycles of a long-studied clock protein called Rev-erb coordinates the ebb and flow of gene expression by tightening and loosening loops in chromosomes, according to new research. (2018-02-09)

E-cigarettes may lead to accumulation of fat in the liver
Using e-cigarettes may lead to an accumulation of fat in the liver, a study of mice exposed to the devices suggests. The research will be presented Sunday, March 18, at ENDO 2018, the Endocrine Society's 100th annual meeting in Chicago, Ill. (2018-03-18)

Can't sleep? Could be down to genetics
Researchers have identified specific genes that may trigger the development of sleep problems, and have also demonstrated a genetic link between insomnia and psychiatric disorders such as depression, or physical conditions such as type 2 diabetes. The study in the journal Molecular Psychiatry, which is published by Springer Nature, was led by Murray Stein of the University of California San Diego and the VA San Diego Healthcare System. (2018-03-09)

Is ADHD really a sleep problem?
Around 75 percent of children and adults with attention deficit hyperactivity disorder (ADHD) also have sleep problems, but until now these have been thought to be separate issues. Now a in a pulling together of the latest research, Scientists are proposing of a new theory which says that much of ADHD may in fact be a problem associated with lack of regular circadian sleep. (2017-09-02)

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