Navigation Links

Tag: "circadian" at biology news

Beyond lithium for bipolar disorder

...nocked out show hyperactivity and defects in their circadian (day-night) behavior--both also characteristic of ... in animals, lithium has been shown to affect such circadian behavior. The protein also has been found to affect the activity of a key neurotransmitter, dopamine...

Effective Cancer Treatments Follow The Clock

... Cryptochrome gene, which, in contrast, `jams' the circadian clock at the most active point in its cycle.?/p...t and skeletal muscles. They operate on a 24-hour, circadian (Latin for "about a day") cycle that governs functions like sleeping and waking, rest and activity, ...

Wisconsin researchers identify sleep gene

...ng of when sleep occurs, which is regulated by the circadian system, Tononi notes. "The key molecular mechanisms controlling the circadian timing of sleep are well understood, but details about the homeostatic mechanism that regulates the ...

Glow-in-the-dark zebrafish at UH hold keys to biological clocks

...egon in Eugene, where he studied the mechanisms of circadian responses to light. He graduated with his bachelor...ellular and physiological mechanisms of vertebrate circadian rhythmicity, photoreceptor cell and molecular biology, and neurobiology. He is a member of the Socie...

After a time-shift, mixed signals from the circadian clock

...daptation by the neurons that comprise the central circadian clock--rather, that different components of the cl...ical analysis of cells that constitute the central circadian clock, the researchers made a surprising discovery: one part of the clock mechanism, represented by ...

The circadian clock: Understanding nature's timepiece

...ou've flown across multiple time zones. The human circadian clock, comprised of about 20,000 time-keeping cell...fety and economic benefits to figuring out how the circadian clock works," Antle says. "We are probably still at least 10 years away from developing a pill that ...

Discovery clarifies role of peptide in biological clock

...e found that the VIP mutants, indeed, can generate circadian rhythms, but the neurons can't synchronize to each...he believes these rhythmic neurons are specialized circadian pacemakers. "We suspect that at least some of the pace making cells in the SCN are VIP cells, and o...

Researchers Identify Cause of Early Bird Sleep Disorder

...e that was not previously shown in mammals to be a circadian rhythm gene," Ptacek explained. It's not yet clear...ant gene works to shift people's sleep time, their circadian rhythm, he added. But follow-on experiments in fruit flies and mice yielded results that are intrigu...

Researchers discover stem cell 'guide' that may be key for targeting neural stem cell treatments

...ame research group to be an important regulator of circadian rhythms. The current study appears in the June 24 issue of the journal Science. "One of the keys to developing promising new therapies for debilitating neurodegenerative diseases lies in our understanding of how new neurons are created and integrate...

How monarch butterflies are wired for navigation

... sensors in the butterfly's eye and the creature's circadian clock--a critical link if the butterflies are to c...he researchers also pinpointed the location of the circadian clock in the butterfly brain. Such circadian clocks govern the approximately 24 hour activity and me...

Gene controlling circadian rhythms linked to drug addiction

...ound. The Clock gene not only controls the body's circadian rhythms, including sleep and wakefulness, body tem...t only did the mice experience problems with their circadian cycles - not sleeping as much and becoming more hyperactive - they also found cocaine more rewarding...

Temperature regulates circadian clock in zebrafish

The biological clock controls the circadian rhythms of a wide range of physiological and behav...s and feeding patterns. While it's well known that circadian clock elements sense and respond to light cycles, much less is known about how daily temperature cyc...

A novel method to measure circadian cycles

... and late-night owls. The variation in individual circadian rhythms is an anecdotal as well as experimentally ...fied fact. But, until now, to systematically study circadian differences (and thereby hope to rout out the underlying genetic causes), scientists have had to rel...

What Makes The Brain Tick, Tick, Tick: Researchers Gaining New Insights Into Brain's Internal Clock

...eurological ground between two other clocks -- the circadian clock that operates over the 24-hour light-dark cy... be localized in a discrete brain area, as can the circadian clock, which has clear inputs from the visual system and outputs that control the cyclic release of ...

Phenotype is influenced by nature, nurture and noise

...s that generate oscillations, sometimes in 24-hour circadian periods. Hasty, graduate students Dmitri Bratsun and Dmitri Volfson, and post-doctoral fellow Lev. S. Tsimring modified the Gillespie algorithm, a well known computer model of cellular reactions, by factoring in intrinsic noise and delays. Using the ...

A resetting signal keeps circadian rhythm on track in Drosophila fruit flies

... Hughes Medical Institute investigator. "However, circadian brain anatomy in mammals is much more complicated .... Flies are state-of-the art. Fortunately, their circadian clocks and even neural mechanisms are quite conserved with mammals." "We were curious about how the...

What can change in the brain? Electrical synapses, research shows

...at electrical synapses help set the brain's master circadian clock. ...

Travelers can avoid jet lag by resetting their body clocks

...lows travelers to avoid jet lag by resetting their circadian body clock before crossing several time zones, acc...d field settings to "phase advance" (resetting the circadian clock earlier in time so that all the circadian rhythms of the body occur earlier) thereby helping p...

Clock molecule's sensitivity to lithium sheds light on bipolar disorder

...is sensitive to lithium and may help shed light on circadian rhythm disorders, including bipolar disorder. The ... at Penn, suggest a relationship between the human circadian clock and metabolism. Proteins are the gears of the clock, and not much is known about what regulate...

Darkness unveils vital metabolic fuel switch between sugar and fat

... animals dig deep burrows," said Lee, an expert in circadian rhythms. "They are constantly in the dark. Why not...mes and three strains of mutant mice with impaired circadian rhythms. The wild-type mice and two of the mutant strains exposed to regular light-dark cycles sh...

1 2

Other Tags
(Date:4/17/2014)... developed at Sandia National Laboratories and recently licensed to ... cheaper. , Bacillus anthracis , the bacteria ... over the world and can cause serious, and often ... can survive in harsh conditions for decades. In humans, ... skin contact, inhalation of spores or eating contaminated meat. ...
(Date:4/17/2014)... about eight years ago, Katia Silvera , a postdoctoral ... were on a field trip in a mountainous area in ... never seen before. , Unable to identify it, they contacted ... turned out to be an unnamed species. So Carnevali recently ... "Lophiaris" is the genus name, comprising about 40 species in ...
(Date:4/17/2014)... a novel method to help kidney stone sufferers ... treatment possible., Kidney stones represent a major medical ... left untreated, apart from being particularly painful, they ... In many patients treated successfully, stone recurrence is ... approach to diagnosis and treatment needs to be ...
Breaking Biology News(10 mins):Pocket-sized anthrax detector aids global agriculture 2Pocket-sized anthrax detector aids global agriculture 3Orchid named after UC Riverside researcher 2Orchid named after UC Riverside researcher 3
(Date:4/17/2014)... led by researchers at UC Davis has shown that ... role in cell division, also boosts the mitochondrial activity ... the complex has been shown to perform both jobs. ... target to control cellular energy production, potentially advancing cancer ... today in the journal Developmental Cell . , ...
(Date:4/17/2014)... international research team led by Cesar A. Arias, M.D., ... at Houston (UTHealth) has identified a new superbug that ... report appeared in the April 17 issue of ... new superbug is part of a class of highly-resistant ... MRSA, which is a major cause of hospital and ...
(Date:4/17/2014)... not uncommon these days to find a colored ribbon representing ... breast cancer. But what color ribbon does one think of ... designated color, for many suffering from the disease, black may ... University study consisting of lung cancer patients, primarily smokers between ... more light on the stigma often felt by these patients, ...
(Date:4/17/2014)... therapy improves general blood flow and alleviates muscle ... researchers at the University of Illinois at Chicago. ... print in the Archives of Physical Medicine ... vascular function in people who had not exercised, ... of their level of physical activity. , Improved ...
(Date:4/17/2014)... shocking rates of suicide are highest in areas with ... smallholdings less than one hectare and trying ... that are highly susceptible to global price fluctuations. , ... that point to a crisis in key areas of ... economy during the 90s. Researchers say that policy intervention ...
Breaking Medicine News(10 mins):Health News:Dual role: Key cell division proteins also power up mitochondria 2Health News:New MRSA superbug emerges in Brazil 2Health News:Unraveling the 'black ribbon' around lung cancer 2Health News:Massage therapy improves circulation, eases muscle soreness 2Health News:New evidence of suicide epidemic among India's 'marginalized' farmers 2Health News:New evidence of suicide epidemic among India's 'marginalized' farmers 3
Other Contents