Current Circadian Clock News and Events

Current Circadian Clock News and Events, Circadian Clock News Articles.
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In tune with the moon
Does the moon affect women's menstrual cycles? This question has been controversial for a long time. A new study by chronobiologists from Würzburg (Germany) now suggest that such an influence does exist. It's complicated, though. (2021-01-27)

Light pollution linked to preterm birth increase
Scientists conducted the first study to examine the fetal health impact of light pollution based on a direct measure of skyglow, an important aspect of light pollution. Using an empirical regularity discovered in physics, called Walker's Law, a team from Lehigh University, Lafayette College and the University of Colorado Denver in the U.S., found evidence of reduced birth weight, shortened gestational length and preterm births. (2021-01-25)

When -- not what -- obese mice ate reduced breast cancer risk
University of California San Diego School of Medicine and Moores Cancer Center researchers report that intermittent fasting reduced breast cancer risk in obese mice. (2021-01-25)

A world first in circadian clock manipulation
A new method developed by Nagoya University and Groningen University scientists allows for reversible manipulation of the circadian clock period using a light-activated switch. Compounds which act on clock proteins were identified through large-scale chemical screening, and modified to include a light-activated switch, which was further modified to react to non-harmful visible light, creating a non-toxic and fully reversible circadian clock control process. (2021-01-24)

Common pesticides stop bees and flies from getting a good night's sleep
Just like us, many insects need a decent night's sleep to function properly, but this might not be possible if they have been exposed to neonicotinoid insecticides, the most common form of insecticide used worldwide, suggests research by academics at the University of Bristol. (2021-01-21)

Deep sleep takes out the trash
By examining fruit flies' brain activity and behavior, the researchers found that deep sleep has an ancient, restorative power to clear waste from the brain. This waste potentially includes toxic proteins that may lead to neurodegenerative disease. (2021-01-20)

Innovations through hair-thin optical fibres
Scientists at the University of Bonn have built hair-thin optical fibre filters in a very simple way. They are not only extremely compact and stable, but also colour-tunable. This means they can be used in quantum technology and as sensors for temperature or for detecting atmospheric gases. The results have been published in the journal ''Optics Express''. (2021-01-20)

An unexpected, and novel, target for prostate cancer - our biological clock
Researchers find that CRY-1, a regulator of circadian rhythms, promotes tumor progression by altering DNA repair. (2021-01-15)

Immune system killer cells controlled by circadian rhythms
An exhaustive dataset drawn from mammalian macrophage cells establishes that macrophage activity is controlled by circadian timing, and - with a substantial mismatch between oscillating proteins and mRNA - hints at unexpected calibration of that timing. (2021-01-12)

How the circadian clock regulates liver genes in time and space
EPFL scientists have carried out the first comprehensive study of how genes in the liver perform their metabolic functions in both space and time of day. Monitoring almost 5000 genes at the level of the individual cell across a 24-hour period, the researchers have modelled how the circadian clock and liver functions crosstalk throughout the day in sync with the feeding-fasting cycle. (2021-01-11)

Bacteria can tell the time
New research reveals that bacteria have internal clocks that align with the 24-hour cycle of life on Earth. (2021-01-08)

New USC study on circadian clock shows "junk DNA" plays a key role in regulating rhythms
Researchers have been trying to figure out what regulates molecular circadian clocks, in search of new insights into diseases like Alzheimer's, cancer and diabetes. Until now, that research has focused on what is known as clock genes. But new research reveals the discovery of a new cog in the circadian clock - a genome-wide regulatory layer made up of small chains of non-coding nucleotides known as micro RNAS (miRNAs). (2021-01-04)

Uncovering how plants see blue light
Plants can perceive and react to light across a wide spectrum. New research from the UC Davis College of Biological Sciences shows how plants can respond to blue light in particular by revealing the structure of cryptochrome-2, the molecule that reacts to blue light. (2021-01-04)

Extremely energy efficient microprocessor developed using superconductors
Researchers from Yokohama National University in Japan have developed a prototype microprocessor using superconductor devices that are about 80 times more energy efficient than the state-of-the-art semiconductor devices found in the microprocessors of today's high-performance computing systems. (2020-12-28)

Plants can be larks or night owls just like us
Plants have the same variation in body clocks as that found in humans, according to new research that explores the genes governing circadian rhythms in plants. (2020-12-18)

Scientists publish the first human psychological aging clock using artificial intelligence
Scientists at Deep Longevity published the first set of psychomarkers of aging developed using deep learning to track the changes in human psychology and assess the effectiveness of interventions, life events, and external events. The new PsychoAge and SubjAge aging clocks were linked to mortality risk. (2020-12-16)

JILA's bigger and better 'tweezer clock' is super stable
JILA physicists have boosted the signal power of their atomic 'tweezer clock' and measured its performance in part for the first time, demonstrating high stability close to the best of the latest generation of atomic clocks. (2020-12-16)

New type of atomic clock keeps time even more precisely
An MIT-designed atomic clock uses entangled atoms to keep time even more precisely than its state-of-the-art counterparts. The design could help scientists detect dark matter and study gravity's effect on time. (2020-12-16)

NBA 'bubble' reveals the ultimate home court advantage, study finds
Using the NBA's travel-less bubble as a natural experiment, a new statistical analysis suggests performance on the road depends on aligning the internal body clock with the new time zone and quality of sleep. (2020-12-11)

Mystery solved with math: cytoplasmic traffic jam disrupts sleep-wake cycles?
KAIST mathematicians and their collaborators at Florida State University have identified the principle of how aging and diseases like dementia and obesity cause sleep disorders. A combination of mathematical modelling and experiments demonstrated that the cytoplasmic congestion caused by aging, dementia, and/or obesity disrupts the circadian rhythms in the human body and leads to irregular sleep-wake cycles. This finding suggests new treatment strategies for addressing unstable sleep-wake cycles. (2020-12-11)

Deep Longevity publishes an epigenetic aging clock of unprecedented accuracy
Longevity startup ''Deep Longevity'' has released a new high-accuracy methylation aging clock -- DeepMAge. It is a neural network that was trained and verified in a collection of >6,000 blood samples from 32 studies. The median absolute error of this aging clock is superior to other methylation clocks: 2.77 years in healthy people. The clock shows association with multiple age-related conditions, including cancer, dementia, and obesity. The authors aim to further develop DeepMAge into a generative model to simulate subcellular aging processes. (2020-12-08)

Circadian gene mutation increases self-administration of cocaine in mice
University of Pittsburgh researchers reveal a molecular basis for the deep and fundamental connection between the disruption in circadian rhythms and predisposition to substance abuse. (2020-12-02)

Glucosamine may reduce overall death rates as effectively as regular exercise
Glucosamine supplements may reduce overall mortality about as well as regular exercise does, according to a new epidemiological study from West Virginia University. (2020-12-01)

Researchers find how stress and the circadian clock affect sleep
Japanese researchers have found a new neural pathway that links the circadian clock, stress, and wakefulness in mammals. They identified a neuron that becomes excessively active when the mammal is under stress, which could trigger insomnia and other sleep disorders. (2020-11-30)

For teens with migraine, sleeping in (a bit) may help
Research indicates that starting school later in the morning yields health and academic benefits for high schoolers, whose natural body clock tends toward late-to-bed, late-to-rise habits. While parents raise concerns about drowsy driving, irritation and impaired school performance, a new study led by researchers at UC San Francisco suggests another reason to push back the start time. (2020-11-25)

Research on environmental history: 330-year-old poplar tree tells of its life
Similar to genetic mutations, epigenetic changes, i.e. gene modifications that do not occur on the primary DNA sequence, sometimes arise accidentally in plants and can be transmitted across generations. Using trees as a model, researchers have now shown for the first time that these so-called epimutations accumulate continuously throughout plant development, and that they can be employed as a molecular clock to estimate the age of a tree. (2020-11-18)

Solitary bees are born with a functional internal clock - unlike honeybees
Individuals of the solitary bee Osmia bicornis show a 24-h behavioral cycle as soon as they emerge, unlike young honeybee workers who need to perform brood care around the clock and only develop a daily cycle later in life. This is reflected in a difference in the rate of brain development: in O. bicornis, but not in honeybees, neurons producing the ''pacemaker'' neuromodulator PDF are already maximally active immediately upon emergence. Sociality seems to have promoted a delay in maturation of the internal clock. (2020-11-16)

Advanced atomic clock makes a better dark matter detector
JILA researchers have used a state-of-the-art atomic clock to narrow the search for elusive dark matter, an example of how continual improvements in clocks have value beyond timekeeping. (2020-11-12)

Internal clocks drive beta cell regeneration
Our body can repair itself after a damage. This phenomenon describes how cells that are still functional start to proliferate to compensate for the loss. By studying diabetic mice, scientists from the University of Geneva and the University Hospitals of Geneva, observed that this regeneration mechanism was under the influence of circadian rhythms, allowing new perspectives to be envisaged to promote beta cell regeneration. (2020-11-11)

Study dives into genetic risk of Alzheimer's and dementia for diverse Latinx groups
To better understand the association of the APOE gene with cognitive decline in Latinx populations, researchers from Brigham and Women's Hospital and collaborators analyzed metrics of cognitive decline in six diverse Latinx populations: those of Cuban, Central American, Dominican, Mexican, Puerto Rican, and South American backgrounds. They found that the APOE-ε4 genetic variant was associated with risk of cognitive decline in Latinx populations, with the strongest effect among those of Cuban backgrounds. (2020-11-06)

Biological clock and extra gene pairs control important plant functions
New understanding of circadian rhythms could be key to stronger, drought-resistant crops in the face of climate change. (2020-11-05)

Scientists discover how a common mutation leads to 'night owl' sleep disorder
People with delayed sleep phase disorder are unable to fall asleep until late at night (often after 2 a.m.) and have difficulty getting up in the morning. In 2017, scientists discovered a surprisingly common mutation that causes this sleep disorder by altering a key component of the biological clock that maintains the body's daily rhythms. Now, a new study reveals the molecular mechanisms involved and point the way toward potential treatments. (2020-10-27)

Timekeeping theory combines quantum clocks and Einstein's relativity
Cool research story with connections to atomic clocks, Einstein and quantum mechanics. The research shows the 'spooky' interference that can impact even the most sophisticated clocks. (2020-10-23)

Researchers identify how night-shift work causes internal clock confusion
Night-shift workers face an increased risk of obesity and diabetes, but the underlying reason for that has been a mystery. Now, University of Missouri School of Medicine researchers have found a potential cause for metabolic changes during night-shift work that creates confusion between cells in the body and the central clock in the brain. (2020-10-22)

Research finds that blue-light glasses improve sleep and workday productivity
During the pandemic, the amount of screen time for many people working and learning from home as well as binge-watching TV has sharply increased. New research finds that wearing blue-light glasses just before sleeping can lead to a better night's sleep and contribute to a better day's work to follow. (2020-10-15)

Researchers deconstruct the "biological clock" that regulates birdsong
The precise timing of a bird's complex song is driven in part by the often-ignored ''wires'' connecting neurons in the bird's brain, according to a new study. A team of researchers from Penn State and New York University has deconstructed an important ''biological clock'' that regulates birdsong and other behaviors, leading to new ways of thinking about the function of neuronal networks. (2020-10-15)

A new protein discovered that repairs DNA
Our cells have DNA repair systems to defend themselves against this sort of damage. One of these systems is based on a protein, photolysis, which uses blue light to repair DNA damage before it leads to mutations. (2020-10-14)

Scientists show jet lag conditions impair immune response in mice
International researchers publishing in Science Advances reveal in a mouse study that chronic jet lag alters the microenvironment surrounding tumor cells, making it more favorable for tumor growth, and also hinders the body's natural immune defenses. (2020-10-14)

Physical activity in the morning could be most beneficial against cancer
The time of day when we exercise could affect the risk of cancer due to circadian disruption, according to a new study with about 3,000 Spanish people   (2020-10-13)

Olympic athletes should be mindful of their biological clocks
Biological clocks have sizeable effects on the performance of elite athletes. This conclusion was drawn by chronobiologists from the University of Groningen after studying the times achieved by swimmers in four different Olympic Games. Shifting the clock to reach peak performance at the right time could make the difference between winning and losing. The results were published on 8 October in the journal Scientific Reports. (2020-10-08)

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