HOME >> BIOLOGY >> NEWS
Biological clock more influenced by temperature than light

Getting over jet lag may be as simple as changing the temperature --your brain temperature, that is.

That's a theory proposed by Erik Herzog, Ph.D. assistant professor of biology in Arts & Sciences at Washington University in St. Louis. Herzog has found that the biological clocks of rats and mice respond directly to temperature changes.

Biological clocks, which drive circadian rhythms, are found in almost every living organism. In mammals, including humans, these clocks are responsible for 24-hour cycles in alertness and hormone levels, for instance. The control panel for these daily rhythms is the suprachiasmatic nucleus (SCN), otherwise known as "the brain's Timex." The SCN, located above the roof of the mouth in the hypothalamus, is normally synchronized to local time by light signals carried down the optic nerves. Herzog worked directly with mice SCN cells located in vitro, grown in a dish.

"We found that we can rapidly change the phase of the pacemaker. We can shift its timing to a new time zone," said Herzog. "This paper shows for the first time that we can take control of the clock in a dish. We can tell it what time we want it to think it is."

Herzog's findings were recently published in the Journal of Neurophysiology.. His work was funded by the National Institute of Mental Health.

The findings have significant future implications. If brain temperature can be controlled, travellers might never have to deal with jet lag again. Shifting to a new time zone might be accomplished with relative ease.

Herzog says that brain temperature is relatively immune to environmental temperature, but can be affected by bursts of physical activity, fever, nursing, or a dose of aspirin or melatonin, a drug already used to lessen the effects of jet lag.

In his study, Herzog first needed to establish that the SCN would function normally over a wide range of constant temperatures. He tested the cells in a range from 2
'"/>

Contact: Tony Fitzpatrick
tony_fitzpatrick@aismail.wustl.edu
314-935-5272
Washington University in St. Louis
14-Jul-2003


Page: 1 2 3

Related biology news :

1. Biological oceanographers examine regime shifts in complex marine ecosystems
2. Biological computer diagnoses cancer and produces drug in a test tube
3. Biological cause of one form of blindness identified by SLU researchers
4. Biological trick reveals key step in melatonins regulation
5. Journal of Gerontology: Biological Sciences to offer forum
6. Systematics at a Crossroads: Biological and Philosophical Arguments
7. Biological and chemical agents in terrorism examined at AAN Annual Meeting
8. Biological Challenges to Humanity: Emerging and Re-emerging Pathogens
9. Biological evidence can persuade people to change unhealthy habits
10. Biological warfare: an emerging threat in the 21st century
11. Biological clock gene in bees found to have another function

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:3/9/2019)... ... March 07, 2019 , ... A firm believer in causes ... & Lymphoma Society (LLS). This donation will help fund not only research to find ... families. , “We are always on the lookout for ways to make a ...
(Date:3/9/2019)... ... March 09, 2019 , ... ... hM4Di ligands – exciting compounds for scientists studying GPCR and DREADD signalling. Hello ... and the National Institute of Neurological Disorders and Stroke, both institutes of the ...
(Date:2/27/2019)... ALAMEDA, Calif. (PRWEB) , ... February 27, 2019 , ... ... today announced that it has received a National Cancer Institute grant for further development ... of 9 months, with clinical support from the lab of Dr. Omar Mian at ...
Breaking Biology News(10 mins):
(Date:3/12/2019)... ... March 12, 2019 , ... Diagenode, a leading ... its third generation long-fragment DNA shearing innovation, the Megaruptor 3. This new solution ... automated processing, and the ability to process up to 8 samples simultaneously ...
(Date:3/9/2019)... ... March 07, 2019 , ... ACEA ... the development and commercialization of high performance, cutting-edge cell analysis platforms for life ... with GLP-certified expertise in cardiovascular pharmacology and electrophysiology, are announcing a partnership to ...
(Date:3/5/2019)... , ... March 05, 2019 , ... ... cold chain engineering firm with regulatory filing authorities, logistics network experts, and experienced ... to initiate its participation in the Inc. Verified Profile program, Inc. editors independently ...
(Date:2/27/2019)... ... 2019 , ... Superior Controls, Inc., a leading Life Sciences ... on both the east and west coasts, today announced that employee Nathan Sandmaier, ... Sandmaier, a senior project engineer, joins Taggart McCormick, P.E., Anthony Whitesell, P.E., and ...
Breaking Biology Technology:
Cached News: