Navigation Links
Support cells, not neurons, lull the brain to sleep
Date:1/28/2009

Brain cells called astrocytes help to cause the urge to sleep that comes with prolonged wakefulness, according to a study in mice, funded by the National Institutes of Health. The cells release adenosine, a chemical known to have sleep-inducing effects that are inhibited by caffeine.

"Millions of Americans suffer from disorders that prevent a full night's sleep, and others from pilots to combat soldiers have jobs where sleepiness is a hazard. This research could lead to better drugs for inducing sleep when it is needed, and for staving off sleep when it is dangerous," says Merrill Mitler, Ph.D., a program director with the NIH's National Institute of Neurological Disorders and Stroke (NINDS).

The study appears Jan. 29, 2009 in Neuron, and was funded by NINDS, the National Institute of Mental Health (NIMH) and the National Institute on Aging (NIA), all part of NIH. It is the result of a collaboration among Michael Halassa, M.D., and Philip Haydon, Ph.D., at Tufts University School of Medicine in Boston and Marcos Frank, Ph.D., and Ted Abel, Ph.D. at the University of Pennsylvania School of Medicine in Philadelphia.

Although the exact purpose of sleep is unknown, everyone seems to need it, and some research suggests that it strengthens memories by adjusting the connections between neurons. As the waking hours tick by, all animals experience an increasing urge to sleep, known as sleep pressure. If sleep is delayed, a deep, long sleep usually follows as the body's means of compensating.

Prior studies pointed to adenosine as a trigger for sleep pressure. The chemical accumulates in the brain during waking hours, eventually helping to stimulate the unique patterns of brain activity that occur during sleep.

Dr. Halassa says that the results of the new study show that "adenosine from astrocytes clearly regulates sleep pressure." He notes that this is the first time a non-neuronal cell within the brain has bee
'/>"/>

Contact: Daniel Stimson
stimsond@ninds.nih.gov
301-496-5751
NIH/National Institute of Neurological Disorders and Stroke
Source:Eurekalert

Page: 1 2 3

Related medicine news :

1. Purkinje Announces EMR Promotions in Support of National Healthcare Reform Initiatives
2. Call- Shadow IP Call Management Software, V.5. Now 64 bit with SIP and Enhanced Platform Support
3. Manhattan Research Survey Finds That Physicians Overwhelmingly Support Commercially-Funded Continuing Medical Education
4. Lance Armstrong Foundation Selects Ogilvy Public Relations Worldwide to Support the LIVESTRONG Global Cancer Campaign
5. Impac Software Announces Clinical Release of RapidArc Support
6. Technology Leaders Call on Congress to Support Investments in Digital Infrastructure as Part of Economic Stimulus and Recovery Plan
7. Grassroots Group Gets Travel Advantage Network Support
8. Developing countries need support to ethically conduct unlinked anonymous HIV testing
9. The Quantum Group Announces Support of Technology Bill Before Congress
10. Seattle Reproductive Medicine Study Investigates Newly Formulated Medications for Luteal Support in IVF
11. National Council of Legislators From Gaming States Adopts Resolution Supporting 100% Smokefree Gaming Venues
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/12/2014)... 2014 A recent article released by Seattle's ... of suggestions for those seeking cosmetic surgical procedures in ... approaching and the heat begins to enliven the rainy Pacific ... clothing, realizing that they didn’t work out as much during ... cause a sudden surge of people eager to look their ...
(Date:7/12/2014)... Wright & Schulte LLC, an experienced law firm who ... (case #59776/2014), announces they have launched a new TV ... popular hair dye, Just For Men, has caused some men ... other areas. In addition to detailing symptoms that are allegedly ... advertisements being run by Wright & Schulte LLC will also ...
(Date:7/12/2014)... (PRWEB) July 12, 2014 ... score of 4.1 out of 5. This above-average ... have been underpinning buyer negotiation power over the ... analyst Anna Son, “during the period, surging demand ... costs associated with new product development, have placed ...
(Date:7/12/2014)... July 12, 2014 The largest pure ... is pleased to announce that it will be opening ... new facility will join four Atlanta-based Nova Medical Centers’ ... at 3209 Deans Bridge Road, and will be open ... , “With Nova’s treatment philosophy of rapid return-to-work ...
(Date:7/11/2014)... Recently, MagicQuinceaneraDresses.com, the popular online supplier of special ... Quinceanera dresses . The company’s new items are ... without paying a large amount of money. They are ... , The company’s online shop has become a one ... outfits. In addition to exquisite Quinceanera dresses, it also ...
Breaking Medicine News(10 mins):Health News:Best Summer Cosmetic Surgeries Revealed in Article By Seattle Plastic Surgeon 2Health News:Just for Men Lawsuit News: TV Campaign Launched by Wright & Schulte LLC to Inform Consumers of the Alleged Association between the Popular Hair Dye and Chemical Burns 2Health News:Just for Men Lawsuit News: TV Campaign Launched by Wright & Schulte LLC to Inform Consumers of the Alleged Association between the Popular Hair Dye and Chemical Burns 3Health News:Just for Men Lawsuit News: TV Campaign Launched by Wright & Schulte LLC to Inform Consumers of the Alleged Association between the Popular Hair Dye and Chemical Burns 4Health News:Floor-Grade Instruments Procurement Category Market Research Report from IBISWorld has Been Updated 2Health News:Floor-Grade Instruments Procurement Category Market Research Report from IBISWorld has Been Updated 3Health News:Floor-Grade Instruments Procurement Category Market Research Report from IBISWorld has Been Updated 4Health News:Nova Medical Centers To Open New Facility in Augusta, Georgia 2Health News:Cheap Quinceanera Dresses Now Available At MagicQuinceaneraDresses.com 2
... PolyScript(R) Labels Enable Fast and Cost-Effective CustomizationSOUTHFIELD, Mich., April ... manufactured specifically to provide equipment with safety warnings or ... to help engineering industries meet the exacting demands made ... (R) and PolyScript ...
... April 1 The following was released today ... Healthcare & Health IT Reporters, Editors, ... WHO: American Health Information Management Association ... Beyond Compliance to Strategic Advantage WHEN: ...
... Derma Sciences, Inc. ... care products, reported that sales for 2008 rose 47.1% year-over-year, ... higher sales of proprietary advanced wound care products led by ... $34.1 million in 2007. The Company,s loss increased consistent with ...
... The Quantum Group, Inc. (NYSE Amex: QGP ... transitioned to Continental Stock Transfer and Trust Company to act ... Quantum President & CEO, commented, "Continental Stock Transfer has been ... well regarded reputation as a comprehensive and customer-centric company that ...
... Alere,s groundbreaking Healthy Kids Program offers tools for ... costs estimated at $14 billion annually- Employers and ... First of its kind personalized solution that provides ... obesity and helps parents and kids become healthierMARIETTA, ...
... Could Save Millions on Expensive Social Services CHICAGO, ... for people who are homeless, have a mental illness, ... and cost of expensive public services such as state ... report released Thursday by the Heartland Alliance Mid-America Institute ...
Cached Medicine News:Health News:Schreiner ProTech Introduces Intelligent Marking Solutions Achieving Process and Cost Optimizations 2Health News:Derma Sciences Reports Fourth Quarter, Year-End Results for 2008 2Health News:Derma Sciences Reports Fourth Quarter, Year-End Results for 2008 3Health News:Derma Sciences Reports Fourth Quarter, Year-End Results for 2008 4Health News:Derma Sciences Reports Fourth Quarter, Year-End Results for 2008 5Health News:Derma Sciences Reports Fourth Quarter, Year-End Results for 2008 6Health News:Derma Sciences Reports Fourth Quarter, Year-End Results for 2008 7Health News:Derma Sciences Reports Fourth Quarter, Year-End Results for 2008 8Health News:The Quantum Group Announces Transition to Continental Stock Transfer 2Health News:The Quantum Group Announces Transition to Continental Stock Transfer 3Health News:New Online Program Helps Parents Tackle Childhood Obesity 2Health News:New Online Program Helps Parents Tackle Childhood Obesity 3Health News:Study Links Reduced Use of Mental Health Facilities, Nursing Homes and Other Public Services to "Smart Investments" in Supportive Housing 2Health News:Study Links Reduced Use of Mental Health Facilities, Nursing Homes and Other Public Services to "Smart Investments" in Supportive Housing 3Health News:Study Links Reduced Use of Mental Health Facilities, Nursing Homes and Other Public Services to "Smart Investments" in Supportive Housing 4Health News:Study Links Reduced Use of Mental Health Facilities, Nursing Homes and Other Public Services to "Smart Investments" in Supportive Housing 5
(Date:7/11/2014)... , July 11, 2014 Research ... "Global Hypodermic Needles Market 2014-2018" report to their ... A hypodermic needle is a hollow needle commonly ... body or or to extract fluids from it. A ... or to inject substances that cannot be ingested. Hypodermic ...
(Date:7/11/2014)... 2014 Research and Markets ( http://www.researchandmarkets.com/research/tjlw9k/immunoprotein ... "Immunoprotein Diagnostic Testing Market - Forecasts to 2019: ... 6% and is expected to be valued at ... http://photos.prnewswire.com/prnh/20130307/600769 ... been segmented according to immunoprotein types which include ...
(Date:7/10/2014)... , 11. Juli 2014 /PRNewswire/ ... Kameras für die molekulare Bildgebung, einschließlich ... heute die CE-Zulassung für sein Navigator ... kann Dilon das Produkt jetzt europaweit ... den Großteil der europäischen Länder ausgedehnt ...
Breaking Medicine Technology:Global Hypodermic Needles Market 2014-2018: Key Vendors are Becton, Dickinson and Co, Covidien, Retractable Technologies and Terumo Corp. 2Global Hypodermic Needles Market 2014-2018: Key Vendors are Becton, Dickinson and Co, Covidien, Retractable Technologies and Terumo Corp. 3Immunoprotein Diagnostic Testing Market - Forecasts to 2019: Expected to grow at the highest CAGR of 6% and is expected to be valued at USD 4,943.0 million 2Dilon erhält CE-Zulassung für sein Navigator-Gamma-Sondensystem 2
... national reference laboratory and a worldwide leader ... offers an extensive test menu of highly ... and anatomic pathology. Owned by the University ... than half of the nation's university teaching ...
... ARUP Laboratories is a national reference laboratory ... research and development. ARUP offers an extensive ... medical tests in clinical and anatomic pathology. ... Laboratories' clients include more than half of ...
... a national reference laboratory and a worldwide ... ARUP offers an extensive test menu of ... clinical and anatomic pathology. Owned by the ... more than half of the nation's university ...
... a national reference laboratory and a worldwide ... ARUP offers an extensive test menu of ... clinical and anatomic pathology. Owned by the ... more than half of the nation's university ...
Medicine Products: