Navigation Links
New understanding of jet lag

A new study demonstrates that the brain's central timekeeper - the biological clock that regulates waking and sleeping cycles - has two parts that fall out of synchrony during light schedule shifts of six hours, the time it takes to fly across the Atlantic.

The finding may explain, at least in part, why transmeridian travelers suffer from jet lag, the malaise experienced after crossing several time zones. The new understanding could eventually lead to the development of medicines that would "reset" the biological clock so travelers could adjust much more quickly to rapid time zone changes. Most people require about two-and-a-half days to adjust to a six-hour flight from Europe to the United States, and even longer after an eastbound trans-Atlantic flight. The study also has implications for ways to treat shift workers - health care providers, factory employees, truck drivers, etc. - who encounter alertness problems, and those with sleep disorders.

A team of researchers at the University of Virginia and at Leiden University Medical Center in the Netherlands published their findings in the May 24 - June 6, 2005 issue of the journal Current Biology.

The investigators found that the dorsal and ventral sections of the suprachiasmatic nucleus (SCN), the brain's central timekeeper, adjust to shifts in light schedules at vastly different rates, potentially causing the difficult period of adjustment that most people experience after air travel across several time zones.

The researchers found that the ventral part of the SCN, which is directly connected by a nerve to the light-sensing retina, synchronizes rapidly with a new light schedule, even a radically shifted schedule. But the dorsal part of the clock requires several additional days to adjust. This results in complex signaling patterns that may adversely affect the functioning of tissues and organs throughout the body for a period of several days.

Importantly, the study identifies
'"/>

Source:University of Virginia


Page: 1 2 3

Related biology news :

1. UCSB scientists probe sea floor venting to gain understanding of early life on Earth
2. Zebrafish may hold key to understanding human nerve cell development
3. Novel ultrafast laser detection of cancer cells also may improve understanding of stem cells
4. Researchers make gains in understanding antibiotic resistance
5. Brain-mapping technique aids understanding of sleep, wakefulness
6. New understanding of DNA repair may pave way to cancer treatments
7. NYU and MSKCC research provides model for understanding chemically induced cancer initiation
8. Virologists make major step towards understanding the process of HIV infection
9. New understanding of cell movement may yield ways to brake cancers spread
10. Proteomics brings researchers closer to understanding microbes that produce acid mine drainage
11. NYU chemists use computer simulation to enhance understanding of DNA transcription
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: New understanding jet lag

(Date:12/17/2014)... Dec. 15, 2014  HITLAB SM announced ... (GCP) audit to confirm its adherence to current ... accomplishment enables HITLAB to conduct regulated smart device ... principles for patient safety and research quality. ... access, quality, and delivery with innovative technology," said ...
(Date:12/17/2014)... Research and Markets ( http://www.researchandmarkets.com/research/9zq33j/global_chemical ... "Global Chemical Sensor Market 2015-2019" report to ... One major trend upcoming in ... sensors in biomedical applications. Chemical sensors help in ... diagnosis during surgical procedures. The Global Chemical Sensor ...
(Date:12/15/2014)... DUBLIN , Dec. 12, 2014 Research ... announced the addition of the "Global Facial ... http://photos.prnewswire.com/prnh/20130307/600769 ... the identification of individuals. Facial recognition system measures ... as nose, jaw edges, mouth, and the distance ...
Breaking Biology News(10 mins):HITLAB Completes GCP Audit for FDA Smart Device & App Compliance 2Global Chemical Sensor Market 2015-2019: Key Vendors are Abbott Laboratories, Bayer, Hoffmann La-Roche, Johnson & Johnson, NGK Spark Plugs and Robert Bosch 2Global Facial Recognition Market 2015-2019: Key Vendors are 3M Cogent, Cognitec Systems, NEC and Safran Group 2Global Facial Recognition Market 2015-2019: Key Vendors are 3M Cogent, Cognitec Systems, NEC and Safran Group 3
... have found that melatonin, a naturally occurring brain substance, ... as seasonal affective disorder, or SAD. The study is ... National Academy of Science. , The study was led ... in the study of circadian (24-hour) rhythm disturbances, such ...
... and infects the most common and deadly form of brain ... devour themselves, researchers at The University of Texas M. D. ... the National Cancer Institute. , The modified adenovirus homed in ... among the cancer cells -- a process called autophagy -- ...
... the neural machinery that triggers the hungry brain to ... swings the other way after a hearty meal, as ... siesta. However, scientists have understood little about how the ... energy-related behaviors. , Now, in an article in the ...
Cached Biology News:Melatonin improves mood in winter depression 2Targeted virus compels cancer cells to eat themselves 2Targeted virus compels cancer cells to eat themselves 3New mechanism explains glucose effect on wakefulness 2New mechanism explains glucose effect on wakefulness 3
(Date:12/24/2014)... “Preparative & Process Chromatography Market by Instrument ... Buffers, Valves, Guages, Seals), Accessories, Services, End User ... 2019” provides a detailed overview of the major ... strategies impacting the preparative and process chromatography market ... revenue and share analysis. , Full Copy ...
(Date:12/24/2014)... Bethesda, MD (PRWEB) December 23, 2014 ... signed into law H.R. 83, the Omnibus and ... the first time, made hydrocephalus a condition eligible ... Research Programs (CDMRP) administered by the Department of ... conjunction with its allies on Capitol Hill, is ...
(Date:12/24/2014)... The report expects global cell isolation and expansion market ... a carefully analyzed data about the vital drivers, restraints, ... Full Copy of Report @ http://bit.ly/1yUxy0T , ... expansion will keep witnessing growth at an impressive CAGR ... driven by rapid technological advancements, government funding and investments, ...
(Date:12/24/2014)... December 23, 2014 PharmaBoardroom,s ... out today and available for free download , digs ... change and growth in the sector today. One ... successes has been in developing a homegrown pharmaceutical manufacturing base, ... production still remains some way off. A cursory comparison with ...
Breaking Biology Technology:Preparative and Process Chromatography Market is expected to reach $9 billion by 2019 - New Report by Marketsandmarkets 2Preparative and Process Chromatography Market is expected to reach $9 billion by 2019 - New Report by Marketsandmarkets 3Preparative and Process Chromatography Market is expected to reach $9 billion by 2019 - New Report by Marketsandmarkets 4Rare Brain Condition Now Eligible for Department of Defense Research Dollars 2The Cell Expansion Market is Expected to Reach $14.8 billion by 2019 - New Research Report by MarketsandMarkets 2The Cell Expansion Market is Expected to Reach $14.8 billion by 2019 - New Research Report by MarketsandMarkets 3PharmaBoardroom Releases New Algeria Pharmaceuticals Report 2PharmaBoardroom Releases New Algeria Pharmaceuticals Report 3
... America,s war on terror includes fighting the dark ... chemist Dr. Frank Raushel is helping with the fight ... chemical agent, the organophosphates. , Synthetic organophosphates started their ... their way into the dangerous alleys of chemical warfare ...
... away, but soccer aficionados can get an early start ... National Institute of Standards and Technology (NIST) and the ... summer. , Nanosoccerthe Lilliputian competition where computer-driven "nanobots" the ... no bigger than a grain of ricewill be part ...
... SAN DIEGO, Nov. 13 Gen-Probe Incorporated,(Nasdaq: GPRO ... the Lazard,Capital Markets 5th Annual Healthcare Conference on Tuesday, ... presentation is scheduled,to be webcast live and may be ... website at http://www.gen-probe.com . The webcast,will be available ...
Cached Biology Technology:Researcher working on destruction of chemical weapons 2Let the games begin! Nanosoccer at 2009 RoboCup in Austria 2Gen-Probe to Webcast Presentation at the Lazard Capital Markets 5th Annual Healthcare Conference 2
For removal of the zona pellucida. Sterile, Mouse Embryo tested...
... linear ion trap mass spectrometer enables high-throughput ... The LXQ linear ion trap mass spectrometer ... applications, delivering the fast cycle time and ... trap at an attractive price. The ...
... enables scientists who do not have access to ... have their biological samples tested for the concentration ... as 1-2-3 Chose the analytes you ... the S&S antibody menu. Send your samples ...
... 2) Dot plot, Contour plot, Density ... 4) Cell Cycle 5) Analysis ... batch generation of graphs and statistics 8) ... operations to perform complex batch analyses 10) ...
Biology Products: