Pauls Valley, OK, Pauls Valley Democrat

Community News Network

October 18, 2013

Sleep: The ultimate brainwasher?

(Continued)

Many neurological diseases — from Alzheimer's disease to stroke and dementia — are associated with sleep disturbances, Nedergaard notes. The study suggests that lack of sleep could have a causal role, by allowing the byproducts to build up and cause brain damage. "This could open a lot of debate for shift workers, who work during the nighttime," Nedergaard predicts. "You probably develop damage if you don't get your sleep."

One unknown, however, is whether the need to remove waste products actively regulates sleep — whether, for example, the buildup of metabolic byproducts makes us sleepy. Researchers also wonder how the fluid-filled channels change shape during sleep, and whether clearing waste actually improves the function of neurons.

Nor are other researchers certain that cleansing is sleep's sole core function. No one function of sleep necessarily rules them all, says sleep scientist Derk-Jan Dijk of the University of Surrey in the United Kingdom. "Sleep probably has many functions," he says, just as the weekend is variously for shopping, socializing, and cleaning the house.

But now that Nedergaard and her colleagues have identified this nightly brainwashing in mice, Czeisler says, scientists can investigate whether it occurs in all species, and to what extent. "One could imagine that different species have evolved different additional functions of sleep to suit their different habitats, … but this will help resolve if there is some shared function of sleep across species," he concludes.

This is adapted from ScienceNOW, the online daily news service of the journal Science. http://news.sciencemag.org

Text Only
Community News Network
Business Marquee

e-Edition
  • How You Want It When You Want It Today's Pauls Valley Democrat

    Now you can view and download the Democrat right to your desktop on the day the paper is published. Click here to get more information on the Democrat's e-Edition.

     

    CLICK HERE TO ACCESS THE E-EDITION SITE

     

    ATTENTION CURRENT DEMOCRAT SUBSCRIBERS TO START an e-EDITION

    e-mail request to sjohnson@pvdemocrat.com

    April 20, 2011 1 Photo 1 Link

AP Video
Raw: Massive Dust Storm Covers Phoenix 12-hour Cease-fire in Gaza Fighting Begins Raw: Bolivian Dancers Attempt to Break Record Raw: Israel, Palestine Supporters Rally in US Raw: Palestinians and Israeli Soldiers Clash Raw: Air Algerie Flight 5017 Wreckage Virginia Governor Tours Tornado Aftermath Judge Faces Heat Over Offer to Help Migrant Kids Kerry: No Deal Yet on 7-Day Gaza Truce Kangaroo Goes Missing in Oklahoma More M17 Bodies Return, Sanctions on Russia Grow Gaza Residents Mourn Dead Amid Airstrikes Raw: Deadly Tornado Hits Virginia Campground Ohio State Marching Band Chief Fired After Probe Raw: Big Rig Stuck in Illinois Swamp Cumberbatch Brings 'Penguins' to Comic-Con Raw: Air Algerie Crash Site in Mali Power to Be Restored After Wash. Wildfire Crashed Air Algerie Plane Found in Mali Israel Mulls Ceasefire Amid Gaza Offensive
Stocks
Facebook