Circadian Rhythm News and Research

Latest Circadian Rhythm News and Research

Current high school start times deprive adolescents of sleep

Current high school start times deprive adolescents of sleep and force students to perform academically in the early morning, a time of day when they are at their worst, according to a study in the June issue of the journal Pediatrics.

6 Jun 2005

Obstructive sleep apnea significantly increases the risk of suffering a stroke

Moderate to severe cases of the nighttime breathing problem known as obstructive sleep apnea significantly increases the risk of suffering a stroke, according to a study to be presented at the American Thoracic Society International Conference on May 23.

23 May 2005

Hour of day and time of year has significant impact on blood pressure levels

The odds of measuring an elevated blood pressure can vary by as much as 40 percent depending on the time of day and time of year, according to researchers from the Center for Health Research and Rural Advocacy at Geisinger Health System in Pennsylvania. They recommend that clinicians anticipate changes in blood pressure due to these temporal factors when diagnosing and considering treatment options for their patients.

16 May 2005

Adolescents who don't get enough sleep might be jeopardizing their athletic performance,

"Young people live in nearly a constant state of chronic insufficient sleep," says Carskadon, "and adolescents who don't get enough sleep on a regular basis are extremely impaired in the morning."

10 May 2005

Cancer treatment - timing is everything

Research led by a cancer biologist at The Cleveland Clinic Lerner Research Institute has identified a molecular mechanism that links the body's internal clock to daily variations in how a patient responds to cancer treatment.

28 Apr 2005

Researchers zero in on sleep gene

Zeroing in on the core cellular mechanisms of sleep, researchers at University of Wisconsin Medical School have identified for the first time a single gene mutation that has a powerful effect on the amount of time fruit flies sleep.

27 Apr 2005

Sydney Research Institute raises concerns about sleepy doctors

Professor Ron Grunstein, Head of the Sleep and Circadian Research Group and Dr Naomi Rogers, chronobiologist both of the Woolcock Institute of Medical Research, have questioned the ability of doctors in Australia's hospitals to do their job properly given the long hours many are expected to work.

27 Apr 2005

Brain system that controls the sleep/wake cycle might also play a role in regulating appetite and metabolism

A new mouse study suggests that a brain system that controls the sleep/wake cycle might also play a role in regulating appetite and metabolism. Mice with a mutation in a gene called "Clock," which helps drive circadian rhythm, ate significantly more and gained more weight.

22 Apr 2005

Body's 24-hour internal clock linked to obesity and diabetes

Obesity and diabetes in both adults and children are rising at alarming rates and a wide range of culprits -- super-sized food portions, lack of exercise due to television, computers, suburban sprawl and loss of gym classes, high-fat and fast foods, sugar-laden drinks and psychological trauma -- have been blamed.

21 Apr 2005

Gene could be cause of early bird disorder

A sleep disorder which makes people nod off early and wake fully alert before dawn is now thought to be caused by a mutant gene.

4 Apr 2005

A circadian rhythm gene discovered

A few rare people who consistently nod off early, then wake up wide-eyed much before dawn, can blame a newly-found mutant gene for their sleep troubles, Howard Hughes Medical Institute researchers announced today.

30 Mar 2005

New directions toward the treatment of bipolar disorder

While lithium treatment has proven to be a godsend for many of the two million Americans with bipolar disorder, it is not without its downside. People on the drug may develop hypothyroidism, tremors, cognitive impairment, and excessive thirst and urination and gain weight.

23 Mar 2005

Vasoactive intestinal polypeptide needed by the brain's biological clock to coordinate daily rhythms

A biologist at Washington University in St. Louis is giving the VIP treatment to laboratory mice in hopes of unraveling more clues about our biological clock.

7 Mar 2005

Melanopsin plays a key role in the inner workings of the eye

A Brown University team has found that a protein called melanopsin plays a key role in the inner workings of mysterious, spidery cells in the eye called intrinsically photosensitive retinal ganglion cells, or ipRGCs.

26 Jan 2005

Lack of sleep could make you fat

Lack of sleep could make you fat. In an editorial published in the Jan. 10 issue of the Archives of Internal Medicine, two Northwestern University researchers stress the need to better understand the growing epidemic of obesity in the United States by studying how loss of sleep alters the complex metabolic pathways that control appetite, food intake and energy expenditure.

10 Jan 2005

Biological clock affects the patterns of heart-rate control in healthy individuals

In a newly reported, first-ever finding, physicists from Boston University and physiologists from Boston’s Brigham and Women’s Hospital (BWH) have found that the body’s biological clock affects the patterns of heart-rate control in healthy individuals independent of sleep/wake cycle or other behavior influences.

21 Dec 2004

Effective management of insomnia begins with recognition and adequate assessment

A seminar in this week’s issue of THE LANCET outlines the common but poorly understood condition of insomnia, concluding that awareness and assessment of insomnia by family doctors is a priority.

29 Nov 2004

Discovery of gene mutation in fruit flies that alters sensitivity to crack cocaine

Researchers at the University of California, San Francisco (UCSF) and New York University have discovered a gene mutation in fruit flies that alters sensitivity to crack cocaine and also regulates their internal body clock.

23 Nov 2004

Discovery of internal molecular clock that governs the metabolism of sugars and fats within the body

Researchers at the University of Pennsylvania School of Medicine have discovered that components of the internal molecular clock of mammals have an important role in governing the metabolism of sugars and fats within the body.

4 Nov 2004

First study to measure the influence of night-shift work on hormone levels that may affect breast-cancer risk

Three years ago, investigators at Fred Hutchinson Cancer Research Center made headlines nationwide when they published the results of a population-based study that suggested women who work the graveyard shift have an increased risk of breast cancer as opposed to women who work the day shift.

26 Oct 2004

Circadian Rhythm News and Research

Latest Circadian Rhythm News and Research

Current high school start times deprive adolescents of sleep

Obstructive sleep apnea significantly increases the risk of suffering a stroke

Hour of day and time of year has significant impact on blood pressure levels

Adolescents who don't get enough sleep might be jeopardizing their athletic performance,

Cancer treatment - timing is everything

Researchers zero in on sleep gene

Sydney Research Institute raises concerns about sleepy doctors

Brain system that controls the sleep/wake cycle might also play a role in regulating appetite and metabolism

Body's 24-hour internal clock linked to obesity and diabetes

Gene could be cause of early bird disorder

A circadian rhythm gene discovered

New directions toward the treatment of bipolar disorder

Vasoactive intestinal polypeptide needed by the brain's biological clock to coordinate daily rhythms

Melanopsin plays a key role in the inner workings of the eye

Lack of sleep could make you fat

Biological clock affects the patterns of heart-rate control in healthy individuals

Effective management of insomnia begins with recognition and adequate assessment

Discovery of gene mutation in fruit flies that alters sensitivity to crack cocaine

Discovery of internal molecular clock that governs the metabolism of sugars and fats within the body

First study to measure the influence of night-shift work on hormone levels that may affect breast-cancer risk

Small solutions for big problems in drug discovery and delivery

Professor Nancy Ip: Pioneering New Paths in Neurodegenerative Therapy

Utilizing process Raman in optimizing cultivated meat production

Circadian Rhythm News and Research

Latest Circadian Rhythm News and Research

Small solutions for big problems in drug discovery and delivery

Professor Nancy Ip: Pioneering New Paths in Neurodegenerative Therapy

Utilizing process Raman in optimizing cultivated meat production

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