Circadian Rhythm News and Research

Latest Circadian Rhythm News and Research

Respiratory sinus arrhythmia is a significant predictor of insomnia in women with breast cancer

A study in the October 15 issue of the Journal of Clinical Sleep Medicine shows that respiratory sinus arrhythmia (RSA) is a significant predictor of insomnia in women with breast cancer and confirmed that longer nocturnal wake episodes were associated with a flatter diurnal cortisol slope.

15 Oct 2008

Researchers investigate impact of stress on police officers' physical and mental health

Policing is dangerous work, and the danger lurks not on the streets alone. The pressures of law enforcement put officers at risk for high blood pressure, insomnia, increased levels of destructive stress hormones, heart problems, post-traumatic stress disorder (PTSD) and suicide, University at Buffalo researchers have found through a decade of studies of police officers.

25 Sep 2008

Mom's depression, baby's sleep linked?

If there's one thing that everyone knows about newborn babies, it's that they don't sleep through the night, and neither do their parents. But in fact, those first six months of life are crucial to developing the regular sleeping and waking patterns, known as circadian rhythms, that a child will need for a healthy future.

2 Sep 2008

New sleep lab to benefit shift-workers

Two specialist laboratories opening night at the University of Sydney will shed light on the impact of sleep and circadian disruption in medical disorders and shift-workers, and the neurobiological mechanisms underlying substance abuse and depression.

21 Aug 2008

New model for studying the genetics of Angelman syndrome

A model for studying the genetics of Angelman syndrome, a neurological disorder that causes mental retardation and other symptoms in one out of 15,000 births, has been developed by biologists at The University of Texas at Austin.

14 Aug 2008

A snooze button for the circadian clock

We may use the snooze button to fine-tune our sleep cycles, but our cells have a far more meticulous and refined system. Humans, and most other organisms, have 24-hour rhythms that are regulated by a precise molecular clock that ticks inside every cell.

13 Aug 2008

Sleep gene - search is on!

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.

29 Jul 2008

Pitt awarded $2.5 million to model how the brain and immune system function in response to illness, infection

In an effort to promote the application of mathematics to medical treatment, researchers in the University of Pittsburgh's Department of Mathematics will undertake a $2.5 million project to create models of how the brain and immune system function and change over time in response to certain illnesses, infections, and treatment.

24 Jun 2008

Turn up the lights and slow down dementia!

A team of Dutch scientists are suggesting that the progression of dementia can be significantly slowed down by treatments which reset the body's natural clock.

11 Jun 2008

New dimension discovered in body clock rhythm

Research on what makes the body clock tick has led Dr Michael Hastings of the MRC Laboratory of Molecular Biology in Cambridge to discover a new and unanticipated cog in the human body clock. A patent for the compound involved has been filed by MRC Technology. The results, published in Science, could lead to therapies for people whose sleep is disrupted by shift work or old age.

18 May 2008

Sleep deprivation could affect students' academic results

A study by an American psychologist has found that many college students have sleep patterns that could have an adverse affects on their academic performance.

15 May 2008

Poor nighttime sleep associated with daytime napping in older adults

Deficiencies in nighttime sleep are associated with daytime napping in older adults, according to a study published in the May 1 issue of the journal SLEEP.

1 May 2008

Phase of clock gene expression in human leukocytes correlates with habitual sleep timing

The phase of clock gene expression in leukocytes, assessed in the absence of the masking effects of light-dark and sleep-wake cycles, correlates with habitual sleep timing, according to a study published in the May 1 issue of the journal SLEEP.

1 May 2008

Different processes govern sight, light detection

A Johns Hopkins University biologist, in research with implications for people suffering from seasonal affective disorder and insomnia, has determined that the eye uses light to reset the biological clock through a mechanism separate from the ability to see.

27 Apr 2008

Different processes govern sight, light detection - findings could point toward help for SAD, insomnia patients

23 Apr 2008

Irregular sleep patterns and shift work linked to organ disease

Disruption of an individual's natural sleep-wake cycle has been determined to be a contributing factor in the development of organ disease.

8 Apr 2008

NYU dental professor discovers biological clock linking tooth growth to other metabolic processes

This clock, or biological rhythm, controls many metabolic functions and is based on the circadian rhythm, which is a roughly 24-hour cycle that is important in determining sleeping and feeding patterns, cell regeneration, and other biological processes in mammals.

7 Apr 2008