Tag: "circadian" at medical news
New test predicts pregnancy problems long before they happen
...f pregnancy and also on a daily pattern known as a circadian
rhythm. The THT compares the expected variability with a particular woman's blood pressure pattern over a 48-hour period to find those who are consistently outside the expected range. It involves wearing a portable blood pressure cuff and purse-siz...
Rensselaer research team sheds light on a good night's sleep for those with Alzheimer's
...lue) light is maximally effective at affecting the circadian
system whereas middle wavelengths (yellow-green) are better for visual performance. The circadian
system is composed rhythms that repeat at approximately every 24 hours. Four Alzheimer's patients we...
Higher nocturnal blood pressure predictive of kidney disease in diabetes
...d to be less likely. Blood pressure has a normal circadian
rhythm and varies depending on levels of stress and physical activity. "Thus, blood pressure measured randomly at the physician's office cannot fully reflect blood pressure levels around the clock, particularly when it is close to the normal range ...
The Lancet Neurology press release
...tic risk factors in sleep disorders, in particular circadian
disorders, narcolepsy, restless-legs syndrome, and obstructive sleep apnoea syndrome. "A study of the genes involved in various sleep disorders and how various genetic disorders may cause sleep disturbance is central to our understanding of the intri...
Insight into how the body tells time
...genetic changes that are regulated by the internal circadian
timekeeping system, rather than by external cues. ...es that these 22 genes are driven by the internal, circadian
clock, not by external cues such as light. Mutant flies lacking the period gene also were placed int...
Exposure to light and sleep pattern alteration
DENVER, CO Each persons circadian
rhythm, or biological clock, influences when we ar...ns in sleep patterns, can affect the timing of the circadian
clock. Recent studies have shown that both the intensity and the timing of light are important to...
Renal colic shows a circadian pattern
... back usually caused by kidney stones) occurs in a circadian
pattern, finds a study in this weeks BMJ. Research... Episodes of renal colic show a highly significant circadian
pattern, with a morning peak and an afternoon low, say the authors. A similar circadian
American Thoracic Society Journal news tips for March (first issue)
... anti-inflammatory agent. Cortisol demonstrates a circadian
rhythm with its peak in the body at 8 a.m. and its lowest level around midnight. Although the pathogenesis of nocturnal airwayobstruction is still unclear, the authors believe one potential cause could be decreased cortisol levels which, at night, p...
Cycled light promotes growth in pre-term infants
...ight establishes a day/night rhythm, mimicking the circadian
rhythm cues that are established for full-term bab...n the womb," said Brandon. "We know adults rely on circadian
rhythms for health, growth and development, and pre-term babies grow within a rich circadian
Brown researchers find new photoreceptor and visual system in the eye
...toreceptor like a rod or cone and sets the bodys circadian
clock. For nearly 150 years, scientists considered...is population of cells plays a role in setting the circadian
clock and probably in a variety of other functions where all the brain needs to know is how bright i...
New research shows major sleep disturbances overlooked in management of patients with Parkinson's disease
...d test discussed, measures limb motor activity and circadian
variations by use of a special device called an Actigraph. Using both testing methods, investigators evaluated the efficacy of the long-acting dopamine agonist cabergoline (CABASER/CABASERIL tablets) on sleep disturbances in PD patients and found ca...
UK College of Medicine researchers develop novel technologies to study neural genes
... a fluorescent protein only in neurons that have a circadian
rhythm. This allows the researchers actually to see which neurons follow a circadian
pattern and then analyze the genes that are at work in those neurons. "It's like the memory game th...
Northwestern researchers present findings at Neuroscience Meeting
... as it does in youth.This may help explain why the circadian
rhythms of many species of animals,including human...showed a significantly greater disruption in their circadian
rhythms than thenormal mice. This would indicate that the Clock gene is important to thefunctioning ...
Early to rise: Research offers clues to older people's sleep habits
...oth olderand younger healthy people share the same circadian
period of a little more than24 hours, countering the belief that the circadian
clock has a 25-hour periodthat shortens in duration with age. "The circadian
period averages 24 hou...
Research Links Healthy Biological Clock To Longevity
...increasedby 20 per cent, proving the importance of circadian
rhythms to the health andlongevity of an organism. Once the biological clock of a hamster begins to deteriorate, death occurswithin three months. However, when University of Toronto psychologist MartinRalph transplanted a new clock into hamsters whos...
Unlocking Secrets Of The Body's Inner Clock; Researchers Discover Key Control Mechanism For An Area Of The Brain That Regulates Sleep
...size of a pinhead. The SCN isknown to regulate the circadian
rhythm -- the 24-hour cycle of sleep andwakefulnes... "The connection between these brain cells and the circadian
cycle isclear," said Charles Allen, Ph.D., associate professor in OHSU's Center forResearch on Occup...
Discovery: Experiments Confirm Novel Eye Pigment Controls Circadian Rhythm
...pigment, called cryptochrome (CRY), drivesmammals' circadian
rhythm, the 24-hour biological timer that regulate...e pigment in the eye was responsible forvision and circadian
synchronization, and now we know that's not true." Discovered in 1877, pigments known as ops...
"Happy Hour" Is Unhappy For Many Cardiac Arrest Victims
... at certain times of the day is a phenomenoncalled circadian
rhythm. Circadian rhythms are tied to the 24-hour...sethat were witnessed arrests were used to compare circadian
variations amongsubgroups (male vs. female, race comparisons, and age comparisons). During the study...
Do Deaths Of Babies From Birth Asphyxia Vary Depending On When They Are Born?
...ully designed to avoid the excessive disruption of circadian
rhythms (upsetting the body clock) and consequent fatigue. Stewart et al conclude that greater supervision by senior staff may be required at night and during summer months, Contact: Dr Patrick Cartlidge, Senior Lecturer in Child Health, Department...