Navigation Links
Model of Internal Clocks Reveals How Jet Lag Disrupts the System

Symptoms of extreme jet lag may result from the body overshooting as it tries to adjust to particularly large leaps forward in time, suggests new research// from the University of Massachusetts Amherst that models circadian rhythms in rats. To transition smoothly to a different time zone, the researchers recommend advancing in chunks of not more than four hours, thus allowing the body’s clocks to remain coordinated. The work also has implications for rotational shift workers, such as nurses and airline attendants, as some shifts will be much harder for the body to adjust to than others.

The body’s sleep and wakefulness patterns are just two of the physiological processes that run on a roughly 24-hour-cycle, or circadian clock, explains Siegelmann. These and other processes are coordinated by the master pacemaker, or clock, an area of the brain with a natural cycle that is approximately 24 hours long. In mammals, the master clock is a group of cells called the suprachiasmatic nucleus (SCN), which lies at the base of the hypothalamus. The SCN receives information on daylight sent from the eyes’ optic nerve and can be reset by environmental cues such as light.

Recent research suggests that every cell in the body actually has its own clock—liver cells prepare for digestion at particular times of day; patterns of hormone production and brain activity exhibit cyclic peaks and valleys, says Siegelmann.

“The circadian system is really fundamental, it affects our behavior, our physiology and emotions,” she says. “The clock organizes the whole body into a very nice dance, and it organizes people together into a larger social orchestra.”

The so-called “local clocks” have natural circadian cycles that range from 21 to 26 hours, says Siegelmann. They are synchronized by the SCN, but the pathways and mechanisms by which this coordination happens aren’t fully understood. Evidence has recently emerged that the SCN itself is compartmen
'"/>




Page: 1 2 3

Related medicine news :

1. Researchers Develop Mouse Model Of Brain Tumor
2. New Model for understanding Tumor Metastasis
3. Mathematical Model Can Now Help Predict Asthma Risk
4. Model Kate Moss - Re-Birth After Humiliation
5. Womens Self-Esteem Not Lowered By Seeing Ultra Thin Models
6. India Can Become A Role Model In Combating HIV Infections
7. Mouse Models To Determine The Cause Of Aggressive Leukemia
8. Aussie Model Macpherson Hated Tall Figure
9. Mouse Model Beneficial to Study of Head and Neck Cancer
10. Tamil Nadu Emerging As Model State In Public Health Care: Governor
11. iSTART Brain Model Reveals the possible Cause of Autism
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Model Internal Clocks Reveals How Jet Lag Disrupts the System

(Date:9/14/2014)... September 14, 2014 School requires that children ... requires that they be screened only for far vision when ... feet away. When their eyes do not track effectively ... they will, at best, avoid reading; at worst, they ... their ability to learn. Children who cannot see cannot ...
(Date:9/13/2014)... New York, NY (PRWEB) September 13, 2014 ... Maroon 5 concert tickets. This beloved pop-rock group ... released V, their fifth studio album. Fans of the group ... released their previous album. If fans were excited yet about ... to know that Maroon 5 has announced a massive worldwide ...
(Date:9/13/2014)... York (PRWEB) September 13, 2014 Stryker ... of the 2012 Rejuvenate and ABG II Modular-Neck Hip ... underway in New Jersey’s Bergen County Superior Court, Bernstein ... issued by the Court on September 10th, 2,097 cases ... increase of 33 filings since the Court issued its ...
(Date:9/13/2014)... Hastings and Hastings, a discount Phoenix ... of dedicated client friendly legal services. As an Arizona ... combined experience, Hastings and Hastings offers aggressively discounted personal ... more impressive is the fact that this firm began ... located across the entire state of Arizona. This provides ...
(Date:9/13/2014)... Deaf Awareness falls on the last full week in September. ... a week-long celebration with events and activities. All events use ... of communication. Voice interpretation will be provided upon request. , ... yoga class, a financial seminar and a sign language class ... is as follows: , BALTIMORE'S BIGGEST ASL CLASS, TUESDAY, SEPTEMBER ...
Breaking Medicine News(10 mins):Health News:Maroon 5 Tickets Now on Sale in Philadelphia, Washington DC, Nashville, San Jose, Chicago, Dallas, Los Angeles, Tacoma, Saint Paul, Vancouver, San Diego & New York 2Health News:Maroon 5 Tickets Now on Sale in Philadelphia, Washington DC, Nashville, San Jose, Chicago, Dallas, Los Angeles, Tacoma, Saint Paul, Vancouver, San Diego & New York 3Health News:Stryker Hip Lawsuit News: Rejuvenate and ABG II Hip Lawsuit Filings Near 2,100 in New Jersey Litigation, Bernstein Liebhard LLP Reports 2Health News:Stryker Hip Lawsuit News: Rejuvenate and ABG II Hip Lawsuit Filings Near 2,100 in New Jersey Litigation, Bernstein Liebhard LLP Reports 3Health News:Hastings & Hastings Reports Reaching 30 Years Of Dedicated Client Friendly Legal Services 2Health News:Hastings & Hastings Reports Reaching 30 Years Of Dedicated Client Friendly Legal Services 3Health News:Baltimore Nonprofit Celebrates Deaf Awareness Week 2Health News:Baltimore Nonprofit Celebrates Deaf Awareness Week 3
... , THURSDAY, Jan. 20 (HealthDay News) -- Emotions can ... products such as airbags, vaccines and smoke detectors, researchers ... they learn that a safety product may carry certain ... airbags sometimes injure or kill. But just because these ...
... HealthDay Reporter , THURSDAY, Jan. 20 (HealthDay News) -- ... the help of aides Wednesday, bodes well for her ... will be moved Friday, just 13 days after a ... University Medical Center in Tucson indicate that the Arizona ...
... paper published Jan. 21 in the journal Science , ... Blossom Damania, PhD, has shown for the first time that ... a key molecule involved in the human immune response. ... Kenan, Jr. Distinguished Professor, Jenny Ting, PhD. First ...
... support system in the first year after diagnosis are less ... to new research from Vanderbilt-Ingram Cancer Center (VICC) and the ... author Meira Epplein, Ph.D., assistant professor of Medicine at VICC, ... of Clinical Oncology. Patients in the study ...
... have found that when patients and providers speak ... better health care quality. The findings were based ... Johnson Foundation,s Latino Health Survey. Understanding the ... important public health implications for providing services in ...
... By Amanda Gardner HealthDay Reporter , THURSDAY, ... be behaving very differently depending on what side of ... example, H1N1 ("swine") flu still predominated in Britain, where 112 ... flu patients, and some doctors report running out of vaccine, ...
Cached Medicine News:Health News:Emotions May Sidetrack Use of Safety Devices 2Health News:Rep. Giffords Standing Up, Set to Begin Rehab Friday 2Health News:Rep. Giffords Standing Up, Set to Begin Rehab Friday 3Health News:Viral protein mimic keeps immune system quiet 2Health News:Strong social ties benefit breast cancer patients 2Health News:Speaking the same language means better health care quality, Wayne State University study finds 2Health News:H1N1 Flu Is Raging in Britain; Could U.S. Be Next? 2Health News:H1N1 Flu Is Raging in Britain; Could U.S. Be Next? 3
(Date:9/12/2014)... LAUSANNE , Switzerland , September ... Genetics, leader européen de la médecine basée sur les ... son premier contrat avec le National Health Service au ... Cela fait suite à une forte hausse de la ... cliniques émanant des laboratoires et hôpitaux en Allemagne, en ...
(Date:9/12/2014)...  WellStar Paulding Hospital is the first hospital in ... in the U.S. to offer a new, innovative procedure ... System, Paulding Hospital is on the cutting edge of ... Inspire Therapy offers relief for moderate to ... to use traditional treatments, like Continuous Positive Airway Pressure ...
(Date:9/12/2014)... , Sept. 12, 2014 ... of the "Global Medical Technologies Market 2014-2018" ... Medical technology is a collective term for software ... to ensure good health. The Global Medical Technologies ... and respiratory technology, In vitro diagnostics technology, dental ...
Breaking Medicine Technology:Sophia Genetics annonce son premier contrat avec le National Health Service britannique et un grand laboratoire turc, élargissant ainsi sa clientèle européenne 2WellStar Pioneers New Sleep Apnea Treatment 2Global Medical Technologies Market 2014-2018: Key Vendors are GE, Johnson & Johnson, Medtronic, Roche and Siemens 2Global Medical Technologies Market 2014-2018: Key Vendors are GE, Johnson & Johnson, Medtronic, Roche and Siemens 3
... Transgenomic, Inc. (OTC/BB: TBIO) today announced the ... Results and Business Update Conference CallWhen: , Thursday, August ... How: , Live over the Internet -- Simply log ... Investor Relations, 402-452-5400To access the call via telephone, call ...
... 11, 2011 /PRNewswire-Asia/ -- ShangPharma Corporation (NYSE: ... pharmaceutical and biotechnology research and development outsourcing company, today ... two multi-staged projects in its biologics division, which portends ... The initial milestones were achieved for two oncology ...
Cached Medicine Technology:Transgenomic to Hold Second Quarter Financial Results Conference Call Today 2ShangPharma's Biologics Division Announces Accelerated Achievement of Milestones for Two Multi-Stage Projects 2
PDA-version of the leading portable drug reference....
PDA formatted guide containing outlines and detailed information on the diagnosis and treatment of HIV infection and AIDS....
PDA application contains 15,000+ ICD-9-CM Diagnosis codes....
Information on diagnosis and management of 500 common or important medical and surgical disorders....
Medicine Products: