Circadian Rhythm News and Research

Latest Circadian Rhythm News and Research

Research shows honey bees change their circadian rhythms

Unlike humans, honey bees, when thrown into highly time-altered new societal roles, are able to alter their biological rhythms with alacrity, enabling them to make a successful "quick switch" in their daily routines, according to research carried out at the Hebrew University of Jerusalem.

13 Oct 2010

Researchers discover rhythmic changes in synapse numbers regulate sleep cycles

With the help of tiny, see-through fish, Stanford University School of Medicine researchers are homing in on what happens in the brain while you sleep. In a new study, they show how the circadian clock and sleep affect the scope of neuron-to-neuron connections in a particular region of the brain, and they identified a gene that appears to regulate the number of these connections, called synapses.

8 Oct 2010

Two-day symposium marks an extraordinary decade for Brown Institute for Brain Science

Just as intense concentration allows a sharp mind to perform at its peak, a research institute that concentrates pre-eminent scientists from 11 academic departments can push back the frontiers of knowledge in a complex research area: the human brain.

8 Oct 2010

Improper biological clocks tend to develop diabetes, obesity: Research

Biologists have found that a key protein that regulates the biological clocks of mammals also regulates glucose production in the liver and that altering the levels of this protein can improve the health of diabetic mice.

20 Sep 2010

BAP releases new guidelines on treatments for sleep disorders

Insomnia and other sleep disorders are very common, yet are not generally well understood by doctors and other health care professionals. Now the British Association for Psychopharmacology (BAP) has released up-to-the-minute guidelines in the Journal of Psychopharmacology, published by SAGE, to guide psychiatrists and physicians caring for those with sleep problems.

3 Sep 2010

23rd ECNP Press conference on impact of circadian rhythms on human brain

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 external 24-hour signals from the physical environment, with a period that is close to 24 hours

30 Aug 2010

Light signaling pathways, circadian rhythms affect biological functions: Research

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 range of its biological functions, everything from reproduction to coloring and DNA repair.

27 Aug 2010

Researchers find new drug to treat circadian rhythm disorders

Researchers funded by the Biotechnology and Biological Sciences Research Council (BBSRC) and the Medical Research Council (MRC) have successfully used a drug to reset and restart the natural 24 hour body clock of mice in the lab. The ability to do this in a mammal opens up the possibility of dealing with a range of human difficulties including some psychiatric disorders, jet lag and the health impacts of shift work.

24 Aug 2010

Reduced quality or quantity of sleep leads to school performance difficulties, behavior problems

Getting a good night's sleep often comes down to technique. Avoiding late-night technology use and keeping a regular sleep schedule are two important techniques to heed as kids head back to school.Recent studies found that adolescents used multiple forms of technology late into the night, including gaming systems, cell phones, and computers. As a result, they demonstrated difficulty staying awake and alert throughout the day.

12 Aug 2010

Research findings show normal rise and fall in triglycerides

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 rise and fall in triglycerides, which happens at about the same time each day, according to researchers who report their findings in the August issue of Cell Metabolism, a Cell Press publication.

4 Aug 2010

Scientist examines relationship between stress of human isolation, immune system

A remote Canadian island is being used to simulate isolated space flight conditions for a NASA-funded medical research study that could produce important information to assist astronauts in potential long duration flights to Mars or an asteroid.

30 Jul 2010

Later sunset, extended daylight exposure delays bedtimes in teenagers

In the spring, later sunset and extended daylight exposure delay bedtimes in teenagers, according to researchers at Rensselaer Polytechnic Institute's Lighting Research Center (LRC).Biologically, this increased exposure to early evening light in the spring delays the onset of nocturnal melatonin, a hormone that indicates to the body when it's nighttime, explains Mariana Figueiro, Ph.D., associate professor. This extended exposure adds to the difficulties teens have falling asleep at a reasonable hour.

27 Jul 2010

Study: Disruption of genes that control circadian rhythms may 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. Mice with defective copies of the genes, called CLOCK and BMAL1, develop abnormalities in pancreatic cells that eventually render the cells unable to release sufficient amounts of insulin.

14 Jul 2010

Study: Delay in school start time significantly improves adolescent sleep, mood and behavior

A pilot study conducted in a small private high school confirms what many have been touting for years: the benefits of a delayed school start time. Judy Owens, MD, a sleep expert with Hasbro Children's Hospital, reports that a modest delay in school start time of only 30 minutes was associated with significant improvements in adolescent alertness, mood and health. Her findings are published in the July issue of the Archives of Pediatric and Adolescent Medicine.

7 Jul 2010

Ancient circadian clock regulates insulin production

The pancreas has its own molecular clock. Now, for the first time, a Northwestern University study has shown this ancient circadian clock regulates the production of insulin. If the clock is faulty, the result is diabetes.

19 Jun 2010

Phase 3 U.S. registration study of LODOTRA shows improvement in patients with RA

Horizon Pharma, Inc., announced today that data from the Phase 3 U.S. registration study of LODOTRA, a circadian cytokine modulator and novel modified-release, low-dose prednisone tablet, showed a statistically significant improvement in American College of Rheumatology response criteria in patients with rheumatoid arthritis.

16 Jun 2010

Peter and Patricia Gruber Foundation to present 2010 Neuroscience Prize to Robert H. Wurtz

Robert H. Wurtz, PhD, a pioneer and leader in the field of neurophysiology, is the recipient of the 2010 Neuroscience Prize of The Peter and Patricia Gruber Foundation. His discoveries of how the brain processes visual information and controls eye movements laid the groundwork for subsequent research into the neurophysiology of visual cognition. This research has led scientists to a deeper understanding of how the brain is organized to produce behavior.

15 Jun 2010

Caffeine helps shift workers make fewer errors: Cochrane researchers

Caffeine can help those working shifts or nights to make fewer errors, according to a new study by Cochrane researchers. The findings have implications for health workers and for any industry relying on shift or night work, such as transportation.

12 May 2010

Research may aid in developing new cancer therapies

Immortality and uncontrolled cell division are the fundamental differences between cancer cells and normal cells.

11 May 2010

Vanda reports total revenue of $12.4 million for first-quarter 2010

Vanda Pharmaceuticals Inc., a biopharmaceutical company focused on the development and commercialization of clinical-stage products for central nervous system disorders, today announced financial and operational results for the first quarter ended March 31, 2010.

4 May 2010