Navigation Links
Babies' biological clocks dramatically affected by birth light cycle
Date:12/5/2010

NASHVILLE, Tenn. The season in which babies are born can have a dramatic and persistent effect on how their biological clocks function.

That is the conclusion of a new study published online on Dec. 5 by the journal Nature Neuroscience. The experiment provides the first evidence for seasonal imprinting of biological clocks in mammals and was conducted by Professor of Biological Sciences Douglas McMahon, graduate student Chris Ciarleglio, post-doctoral fellow Karen Gamble and two undergraduate students at Vanderbilt University.

The imprinting effect, which was found in baby mice, may help explain the fact that people born in winter months have a higher risk of a number of neurological disorders including seasonal affective disorder (winter depression), bipolar depression and schizophrenia.

"Our biological clocks measure the day length and change our behavior according to the seasons. We were curious to see if light signals could shape the development of the biological clock," said McMahon.

In the experiment, groups of mouse pups were raised from birth to weaning in artificial winter or summer light cycles. After they were weaned, they were maintained in either the same cycle or the opposite cycle for 28 days. Once they were mature, the mice were placed in constant darkness and their activity patterns were observed.

The winter-born mice showed a consistent slowing of their daily activity period, regardless of whether they had been maintained on a winter light cycle, or had been shifted to summer cycle after weaning. When the scientists examined the master biological clocks in the mouse brains, using a gene that makes the clock cells glow green when active, they found a similar pattern: slowing of the gene clocks in winter-born mice compared to those born on a summer light cycle.

"What is particularly striking about our results is the fact that the imprinting affects both the animal's behavior and the cycling of the neurons
'/>"/>

Contact: David F. Salisbury
david.salisbury@vanderbilt.edu
615-343-6803
Vanderbilt University
Source:Eurekalert

Page: 1 2 3 4 5

Related biology news :

1. World breakthrough in treating premature babies
2. Consumers desire more genetic testing, but not designer babies
3. Study finds rescue course of antenatal steroids improves outcome in premature babies
4. Mama whales teach babies where to eat
5. Engineering bouncing babies, 1 at a time
6. Tufted bacteria cause infection in premature babies
7. Babies born to native high-altitude mothers have decreased risk of low birth weight
8. ICSI or IVF: Babies born from frozen embryos do just as well
9. Supplementing babies formula with DHA boosts cognitive development
10. Will giving coffee to babies keep them awake as adults?
11. Healthy babies by the numbers
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/29/2014)... latest research from the University of Adelaide ... of many preterm children can perform almost as well as ... University,s Robinson Research Institute has found that as ... early life, their cognitive abilities as a teenager can potentially ... results of the study, published in this month,s issue of ...
(Date:7/29/2014)... rare disease it affects 1 in 100,000 people ... wall. While its cause remains unknown, a new study by ... University of Bonn in Germany and other European institutions confirms ... The study, published on 6 July in Nature Genetics ... , When we swallow, a sphincter in the lower esophagus ...
(Date:7/29/2014)... Francisco is the first to show that while the ... aging, these negative effects may be reduced by maintaining ... "The study participants who exercised, slept well and ate ... didn,t maintain healthy lifestyles, even when they had similar ... assistant professor in the department of psychiatry at UCSF. ...
Breaking Biology News(10 mins):Preterm children's brains can catch up years later 2Mysterious esophagus disease is autoimmune after all 2Healthy lifestyle may buffer against stress-related cell aging, study says 2
... This news release is available in German . ... as popular as jogging. About ten million people in Germany are ... to reduce stress, lose ex- cess fat, and improve endurance. Running ... despite its numerous positive effects, jogging is a desirable sport with ...
... The Bahamas spanning almost two decades shows that female lemon ... give birth to their own young, confirming this behavior for ... and has resulted in the capture, tagging, and release of ... This article, published online on December 5 in ...
... Duke-NUS Graduate Medical School, which form Singapore,s largest academic ... to accelerate the discovery of treatments and cures. They ... Eureka Institute for Translational Medicine today. As ... and Duke-NUS join an elite group of academic medical ...
Cached Biology News:High-tech athletic shoe for pure running pleasure 2New finding shows that mother sharks 'home' to their birthplace to give birth, like salmon and sea turtles 2New finding shows that mother sharks 'home' to their birthplace to give birth, like salmon and sea turtles 3Singapore joins global translational medicine network as Asia-Pacific hub 2Singapore joins global translational medicine network as Asia-Pacific hub 3
(Date:7/29/2014)... , July 29, 2014  Sigma-Aldrich Corporation (NASDAQ: ... energy use, increased its investment in Green Chemistry and ... the world last year, the Company announced Monday in ... Science Changed the World? The report ... honors for being a responsible corporate citizen, including recognition ...
(Date:7/29/2014)... SPRING, Md., July 29, 2014  United Therapeutics ... announced its financial results for the second ... continued growth shows that our medicines are ... pulmonary arterial hypertension (PAH)," said Martine Rothblatt, ... Officer. "The commercial launch this quarter of ...
(Date:7/29/2014)... July 29, 2014 Eppendorf Centrifuge ... product selection. Eppendorf 5427 R is geared towards high-end ... – it is targeted towards work requiring high sample ... R as it compliments their extensive 16, 48, and ... of microcentrifuge tubes, PCR tubes, PCR strip tubes, and ...
(Date:7/29/2014)... 29, 2014 White papers by ... cloud based eClinical technologies, have been published by leading ... follow a long line of white papers by Clinovo ... Life Science Leader, Pharmaceutical Online, and OpenHealthNews. , At ... paper by CTO Marc Desgrousilliers, 'The Five Essentials ...
Breaking Biology Technology:Sigma-Aldrich Achieves Record Success in Environmental, Community Initiatives 2Sigma-Aldrich Achieves Record Success in Environmental, Community Initiatives 3United Therapeutics Corporation Reports Second Quarter 2014 Financial Results 2United Therapeutics Corporation Reports Second Quarter 2014 Financial Results 3United Therapeutics Corporation Reports Second Quarter 2014 Financial Results 4United Therapeutics Corporation Reports Second Quarter 2014 Financial Results 5United Therapeutics Corporation Reports Second Quarter 2014 Financial Results 6United Therapeutics Corporation Reports Second Quarter 2014 Financial Results 7United Therapeutics Corporation Reports Second Quarter 2014 Financial Results 8United Therapeutics Corporation Reports Second Quarter 2014 Financial Results 9United Therapeutics Corporation Reports Second Quarter 2014 Financial Results 10United Therapeutics Corporation Reports Second Quarter 2014 Financial Results 11United Therapeutics Corporation Reports Second Quarter 2014 Financial Results 12United Therapeutics Corporation Reports Second Quarter 2014 Financial Results 13International Pipette Distributor, Pipette.com Announces the Addition of the Eppendorf Centrifuge 5427 R to Their Product Portfolio 2Clinovo White Papers Published in Summer 2014 Editions of Leading Medical Device & Pharmaceutical Publications 2Clinovo White Papers Published in Summer 2014 Editions of Leading Medical Device & Pharmaceutical Publications 3
... ILI ), announced today that it will host ... at 4:30 p.m. ET to review the Company,s,first quarter ... developments., To access the live call, dial 877-627-6555 ... on the Investors,section of the Company,s website, http://www.ilgenetics.com ...
... Pharmaceuticals, Inc.,(Nasdaq: AMLN ) will be presenting at ... 2008 at 10:00 a.m. PT in Las Vegas. Michael,York, ... providing a corporate overview., The live presentation and ... made available following the event. The webcast and,recording will ...
... to augment Quintiles Consulting offerings, RESEARCH ... Corp. today announced that it has signed ... decision-analytics and market research,consulting firm located in ... business., The acquisition of Eidetics will ...
Cached Biology Technology:Interleukin Genetics Announces Conference Call and Webcast to Discuss First Quarter 2008 Business Results 2Quintiles Signs Agreement to Acquire Eidetics 2
...
Performance, mycoplasma, virus, and endotoxin tested. Collected from calves 14 days old or less...
...
Mus musculus junctophilin 2 (Jph2) Antigen: Recombinant Protein...
Biology Products: