Navigation Links
'Food Clock' May Override Master Sleep Clock in Times of Duress
Date:5/22/2008

Mouse study suggests threat of starvation triggers the switch

THURSDAY, May 22 (HealthDay News) -- New animal research suggests the body's biological clock, which regulates sleep cycles based on the rise and fall of the sun, can be overridden in extreme situations by an internal "food clock."

The finding is based on work with mice and has not yet been tested among humans. But early indications are that, when faced with starvation, the animals automatically adjust their wake-sleep schedule to adapt to the best time to access food.

"In the wild, where starvation is a common threat, this must have evolved as a way for animals to lock onto a new food source, when necessary, to avoid starvation," said study author Dr. Clifford Saper, chairman of the department of neurology at Beth Israel Deaconess Medical Center and a professor of neurology at Harvard Medical School.

Saper and his team reported the findings in the May 23 issue of Science.

They noted that for animals and humans alike, the body's main clock is centered among a group of cells in the brain's hypothalamus region. Referred to as the "suprachiasmatic nucleus", this circadian clock is triggered by visual cues gleaned from the light-dark cycle. Such signals, in turn, activate cells that regulate sleep-wake cycles.

The authors speculated, however, that this standard "master" system could be overridden in situations of extreme duress -- such as starvation.

To test this theory and locate a possible "food clock," the researchers focused on mice genetically altered to lack a gene integral to the master biological clock.

After implanting the mice with transmitters to record body temperature and movement within plastic cages regulated for light and temperature, Saper and his colleagues then restored full light-clock function only to isolated parts of each mouse's brain throughout a rotating series of food deprivation exper
'/>"/>

Copyright©2008 ScoutNews,LLC.
All rights reserved  

Page: 1 2 3 4

Related medicine news :

1. Eating junk food whilst pregnant and breastfeeding may lead to obese offspring
2. Scientists Develop Natural Protection for Stored Foods
3. New Survey Shows Americans are Still Concerned About Food Safety, Yet Still Not Smart About What They Like to Eat
4. Food Bank For New York City Acquires FoodChange
5. September: Time to Try Cholesterol-Free Soyfoods
6. Top Tips to Enjoy Healthy Latin Food Without Losing the Taste (Recipe)
7. Eat Seafood, See Weight Loss: Recent Study Finds Another Reason to Eat Seafood for a Fit Lifestyle
8. Food Additives Could Fuel Hyperactivity in Kids
9. Cutting Salt Wont Affect Foods Safety
10. American Diabetes Association and Goya Foods Inc. Team Up To Support Diabetes Awareness and Outreach in the Latino Community
11. U of M study: Health food supplement may curb addiction of pathological gamblers
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
'Food Clock' May Override Master Sleep Clock in Times of Duress
(Date:10/22/2014)... Best Cheap Hosting USA is among the most distinguished ... announced that iPower ( http://www.best-cheap-hosting-usa.com/go/iPower/ ) is the best ... world. , “iPower is one of the most reliable ... kinds of useful products for new and old clients. ... service and a number of features which will appeal ...
(Date:10/22/2014)... 22, 2014 Richard Carlson, Managing Partner ... leader with over 25 years experience. Mr. Carlson ... the areas related to EDI, B2B Commerce, RFID and ... Editorial Advisory Board member for Pharmaceutical Commerce Magazine and ... Fin Group is a management and technology consulting firm ...
(Date:10/22/2014)... Tara Haelle HealthDay Reporter , ... young adult men may lead to increased blood pressure, according ... a similar rise in blood pressure for young adult women ... young adult women drank lightly or moderately, their risk of ... "This finding parallels studies in older adult men and ...
(Date:10/20/2014)... The newly updated Worldwide Medical Market Forecasts ... facts, figures and forecasts on the global medical markets. ... categories the Worldwide Medical Market Forecasts to 2019 ... on the worldwide medical market to reveal key insights ... data for 2010-2019, covering each country market individually, allowing ...
(Date:10/20/2014)... Women’s health specialist, Dr. Amber Murphy, ... of Columbus, Inc., A Division of MaternOhio Clinical Associates, ... than 100,000 patients annually. Dr. Murphy will provide a ... of a women’s life. She is accepting new patients ... and Dublin. , Dr. Murphy offers a wide variety ...
Breaking Medicine News(10 mins):Health News:Best Cheap Hosting USA Has Recently Announced The Best Cheap Web Hosting Companies In 2014 2Health News:Rich Carlson and Marc Duey to Hold Workshop at CBI’s Specialty Pharmacy and Distribution Networks Conference 2Health News:Binge Drinking May Boost Blood Pressure in Young Men 2Health News:Binge Drinking May Boost Blood Pressure in Young Men 3Health News:Binge Drinking May Boost Blood Pressure in Young Men 4Health News:Worldwide Medical Market Forecasts to 2019 a New Research Report Added to ReportsnReports.com 2Health News:Worldwide Medical Market Forecasts to 2019 a New Research Report Added to ReportsnReports.com 3Health News:Worldwide Medical Market Forecasts to 2019 a New Research Report Added to ReportsnReports.com 4Health News:OhioHealth Welcomes New Women’s Health Specialist to MaternOhio Specialists in Obstetrics & Gynecology of Columbus, Inc. 2Health News:OhioHealth Welcomes New Women’s Health Specialist to MaternOhio Specialists in Obstetrics & Gynecology of Columbus, Inc. 3
... - Dragon Pharmaceutical Inc.,(TSX: DDD; OTC BB: DRUG; ... three and nine months ended September 30, 2007, ... core antibiotic business. Meanwhile,the Company also announced the ... through a separate press release. Highlights for ...
... 14 Thanksgiving meal preparation turns,the common kitchen into ... cutting boards. But despite all of that, it doesn,t ... at-home cooks pay attention to one,cooking coach,s advice. ... at:, http://media.medialink.com/WebNR.aspx?story=34114 Registered journalists can access video, ...
... Reduce Medication Errors, WASHINGTON, Nov. 14 ... today that the proposed standards for,electronic prescribing ... Medicaid Services (CMS) confirm that the time ... Following four years of extensive review by ...
... Catalyst,Pharmaceutical Partners, Inc. (Nasdaq: CPRX ) today reported ... Third Quarter 2007 Results For the quarter ended ... $734,347 or $0.06 loss per basic and diluted share, ... per basic and diluted share for the,same period in ...
... 14, 2007 The Juvenile Diabetes Research Foundation and ... joining together to create a $3 million research effort ... therapies to cure diabetes and its complications by developing ... disease and the effectiveness of therapeutics. , The ...
... Data covering 34 years shows parental history, overweight are ... News) -- The development of type 2 diabetes in ... U.S. study that,s followed a group of 814 children ... Children,sHospital Medical Center found that parental history of diabetes, ...
Cached Medicine News:Health News:Dragon Achieved Solid Increase in Sales and Profits from Continuing Operations for Q3 2Health News:Dragon Achieved Solid Increase in Sales and Profits from Continuing Operations for Q3 3Health News:Dragon Achieved Solid Increase in Sales and Profits from Continuing Operations for Q3 4Health News:PCMA: CMS Releases Proposed E-Prescribing Standards in Medicare 2Health News:Catalyst Pharmaceutical Partners Reports Third Quarter 2007 Financial Results 2Health News:Catalyst Pharmaceutical Partners Reports Third Quarter 2007 Financial Results 3Health News:Catalyst Pharmaceutical Partners Reports Third Quarter 2007 Financial Results 4Health News:Catalyst Pharmaceutical Partners Reports Third Quarter 2007 Financial Results 5Health News:JDRF and Lilly partner to fund research to identify beta cell biomarkers 2Health News:JDRF and Lilly partner to fund research to identify beta cell biomarkers 3Health News:Adult Type 2 Diabetes Can Be Predicted in Childhood 2
(Date:10/22/2014)... Colo. , Oct. 22, 2014   Surefire ... of infusion systems designed to maximize targeted delivery of ... pleased to announce that oncologist John R. Daniels ... Comprehensive Cancer Center, and surgical oncologist Steven C. ... have joined the Company,s Scientific Advisory Board (SAB).    ...
(Date:10/22/2014)... , Oct. 22, 2014 WHEN: Wednesday, October ... complimentary registration available at: http://bit.ly/1yStiU9 ... Vidyasekar and Visionary Innovation Research Group Senior ... electricity, self-assembling materials, nanobots and flexible electronics ... will transform our lives in the coming ...
(Date:10/22/2014)... CITY, Calif. , Oct. 22, 2014 /PRNewswire/ ... today announced that results from the  IAP310 study ... Pain Medicine (RAPM), a peer-reviewed journal with ... Phase 3 trial evaluating the safety and efficacy ... sublingual tablet system (SSTS), for the treatment of ...
Breaking Medicine Technology:Surefire Medical's Scientific Advisory Board Expands, Broadens Clinical Trial Expertise 2Futuristic Technologies That Will Transform Our World Beyond 2030 2Futuristic Technologies That Will Transform Our World Beyond 2030 3Futuristic Technologies That Will Transform Our World Beyond 2030 4AcelRx Announces Publication of Zalviso Phase 3 Abdominal Trial Results 2
LH EIA Reproductive Markers 025-BC-1031 Luteinizing Hormone...
... based on the competition principle and the ... in the sample and a fixed amount ... for the,binding sites of a polyclonal Estradiol ... hours incubation the microtiterplate is,washed to stop ...
... Testosterone is the most important androgen ... is secreted,primarily by the Leydig cells of ... circulating testosterone is derived from,peripheral conversion of ... ca. 25% from the adrenal glands. The ...
... Dehydroisoandrosterone,Transdehydroandrosterone, DHEA) is a steroid ... in its,sulfate form (DHEA-S). The ... on the competition principle and ... of DHEA-S present in the ...
Medicine Products: