Jet Lag News and Research

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Jet lag, medically referred to as "desynchronosis," is a physiological condition which is a consequence of alterations to circadian rhythms; it is classified as one of the circadian rhythm sleep disorders.

Humans and zebrafish share mechanisms that regulate the circadian system

Circadian rhythms - the natural cycle that dictates our biological processes over a 24-hour day - does more than tell us when to sleep or wake. Disruptions in the cycle are also associated with depression, problems with weight control, jet lag and more. Now Prof. Yoav Gothilf of Tel Aviv University's Department of Neurobiology at the George S. Wise Faculty of Life Sciences is looking to the common zebrafish to learn more about how the human circadian system functions.

21 Jul 2011

Checklist to stay healthy and active in summer

The summer is a great season for getting in shape. Whether by playing a sport, doing an aerobic exercise routine, or just returning to that familiar running path -- this is the time for activity.

2 Jul 2011

Omeros identifies compounds that interact with orphan GPCRs associated with leukemia

Omeros Corporation today reported that it has identified compounds that interact with orphan G protein-coupled receptors (GPCRs) P2Y8 and OPN4. P2Y8 (also known as P2RY8) is associated with acute lymphoblastic leukemia (ALL), an aggressive cancer of the white blood cells.

27 Jun 2011

Astrocytes regulate circadian system that controls normal sleep patterns

The circadian system that controls normal sleep patterns is regulated by a group of glial brain cells called astrocytes, according to a study published online on April 14th in Current Biology, a Cell Press publication. Neuroscientists from Tufts University School of Medicine found that disruption of astrocyte function in fruit flies ( Drosophila) led to altered daily rhythms, an indication that these star-shaped glial cells contribute to the control of circadian behavior.

15 Apr 2011

Nurses use ineffective strategy for adapting circadian clocks to night-time schedule

As many as 25 percent of hospital nurses go without sleep for at least 24 hours in order to adjust to working on the night shift, which is the least effective strategy for adapting their internal, circadian clocks to a night-time schedule.

15 Apr 2011

Vanda to initiate tasimelteon Phase IIb/III clinical trial in Major Depressive Disorder

Vanda Pharmaceuticals Inc. today announced its plans to initiate a Phase IIb/III clinical trial of tasimelteon in patients with Major Depressive Disorder (MDD). The trial is expected to begin during the second half of 2011. Tasimelteon is currently being evaluated in Phase III clinical trials for the treatment of Non-24-Hour Sleep/Wake Disorder (N24HSWD) in blind individuals without light perception.

31 Mar 2011

NatureBright's light therapy product recommended for relieving Seasonal Affective Disorder

The light therapy product Sun Touch Plus from NatureBright has been recommended by Dr. Chris Idzikowski from the Edinburgh Sleep Centre for relieving Seasonal Affective Disorder (SAD). Dr. Idzikowski is a pioneer in the area of sleep science and chairs the British Sleep Society.

14 Feb 2011

Fungus may provide clue about human response to changes in circadian rhythm

Humans are not the only species ruled by a circadian rhythm. Even simple organisms like moulds are governed by an inner clock. Studying red bread mould may teach us how our own internal clock works. This is exactly what the Centre for Organelle Research at the University of Stavanger, Norway is doing.

30 Dec 2010

Interaction of light with circadian systems

In a new paper published this week in the Proceedings of the National Academy of Sciences, Aziz Sancar, MD, PhD, the Sarah Graham Kenan Professor of Biochemistry and Biophysics in the UNC School of Medicine, and his colleagues have taken an important step in understanding the underlying molecular signals that influence a broad array of biological processes ranging from the sleep-wake cycle to cancer growth and development.

30 Dec 2010

Cephalon receives second FDA Complete Response Letter for NUVIGIL sNDA

Cephalon, Inc. today announced that the company received a second Complete Response Letter from the U.S. Food and Drug Administration (FDA) for the supplemental new drug application (sNDA) for NUVIGIL(R) (armodafinil) Tablets [C-IV] for the treatment of patients with excessive sleepiness associated with jet lag disorder resulting from eastbound travel. In its letter to the company, the FDA reiterated its previously stated concerns regarding the NUVIGIL sNDA.

28 Dec 2010

Chronic jet lag alters brain's intricate role in memory processing

Chronic jet lag alters the brain in ways that cause memory and learning problems long after one's return to a regular 24-hour schedule, according to research by University of California, Berkeley, psychologists.

25 Nov 2010

New findings shed light on people's response to daylight and biological clock

Fresh insight into how biological clocks adjust to having less sunlight in the winter could help us better understand the impact of jet lag and shift work.

23 Nov 2010

Novel mechanism regulating circadian rhythm identified

Scientists from the Florida campus of The Scripps Research Institute have identified for the first time a novel mechanism that regulates circadian rhythm, the master clock that controls the body's natural 24-hour physiological cycle. These new findings could provide a new target not only for jet lag, shift work, and sleep disturbances, but also for disorders that result from circadian rhythm disruption, including diabetes and obesity as well as some types of cancer.

11 Nov 2010

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

Shift work can cause cancer: Research

Shift work can cause cancer. In the new issue of the Deutsches Ärzteblatt International, Thomas C. Erren and colleagues describe the current state of knowledge in this area and point out the challenges lying ahead.

11 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

Latest achievements in brain research and treatment for mental disorders

Mental disorders, such as depression, anxiety disorders, addiction and schizophrenia are the core challenge of most health care systems around the world. In the EU alone, each year 27% of the total adult population - this corresponds to 83 Million citizens - suffer from mental disorders. Depression alone affects almost 20 million ranking in the EU as the most disabling disorder of all diseases.

30 Aug 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