HOME >> BIOLOGY >> NEWS
Jefferson and Brigham and Women's researchers find blue light important for setting biological clock

Researchers from Brigham and Women's Hospital (BWH) in Boston and Jefferson Medical College have found that the body's natural biological clock is more sensitive to shorter wavelength blue light than it is to the longer wavelength green light, which is needed to see.

The discovery proves what scientists have suspected over the last decade: a second, non-visual photoreceptor system drives the body's internal clock, which sets sleep patterns and other physiological and behavioral functions.

"This discovery will have an immediate impact on the therapeutic use of light for treating winter depression and circadian disorders," says George Brainard, Ph.D., professor of neurology at Jefferson Medical College of Thomas Jefferson University in Philadelphia. "Some makers of light therapy equipment are developing prototypes with enhanced blue light stimuli."

"In the long range, we think this will shape all artificial lighting, whether it's used for therapeutic purposes, or for normal illumination of workplaces, hospitals or homes this is where the impact will be," he says. "Broad changes in general architectural lighting may take years, but the groundwork has been laid."

In theory, he says, "If a clinician wants to use light therapeutically, the blue wavelengths may be more effective. If you wanted built-in illumination that would enhance circadian regulation, you might want this wavelength region emphasized. It is interesting that natural daylight the blue sky is rich in this part of the spectrum."

Dr. Brainard and his co-workers previously discovered that wavelengths of light in the blue region of the visible spectrum are the most effective in controlling the production of melatonin, which plays an important role in the body's circadian rhythms.

The scientists reported their findings September 9 in the Journal of Clinical Endocrinology and Metabolism.

In the study, researchers tested 16 healthy subjects, exposing them to the
'"/>

Contact: Steve Benowitz
steven.benowitz@jefferson.edu
215-955-5291
Thomas Jefferson University
10-Sep-2003


Page: 1 2

Related biology news :

1. Jefferson Lab detector technology aids development of cystic fibrosis therapy
2. Jefferson scientists find gene expression pattern may predict behavior of leukemia
3. Jefferson researchers develop microchip to track genetic signature of cancer and normal tissue
4. Jefferson scientists use gene therapy to restore function of damaged heart cells in lab
5. Jefferson researchers uncover biochemical clues to how cells migrate in embryos
6. Jefferson Lab experiment generates THz radiation 20,000 times brighter than anyone else
7. Jefferson scientists show neural stem cells can become dopamine-making brain cells in laboratory
8. Jefferson scientists show how collagen gene mutation leads to osteoarthritis
9. Jefferson scientists use gene repair technique to change albino mice hairs to black
10. Jefferson scientists show drug is effective against a Hepatitis C Virus model in the laboratory
11. Jefferson scientists propose mechanism to control the bodys red blood cell and platelet production

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


(Date:6/27/2019)... ... 2019 , ... Lighting designers from integrated design firm LPA recently ... for creating both engaging and energy efficient lighting systems. , The lighting for the ... San Diego, California earned an IES Illumination Award of Merit in the Energy and ...
(Date:6/19/2019)... ... June 19, 2019 , ... Dahryn Trivedi, today released ... of Cefazolin Sodium, antibiotic which can prove to be beneficial for treating multiple bacterial ... in residue amount , Over 68% decrease in weight , ...
(Date:6/14/2019)... ... ... Molecular diagnostics segment is the fastest-growing segment within the global IVD market. ... that are expected to drive the growth are infectious diseases, cancer, and transplant diagnostics. ... The World Molecular Diagnostics Market, 8th Edition . , The discovery of the ...
Breaking Biology News(10 mins):
(Date:7/17/2019)... ... July 16, 2019 , ... Quidel is ... from Kalorama Information. Abbott, Roche and Siemens Healthineers and Response Biomedical also are ... Worldwide Market for Point-of-Care (POC) Diagnostics . , Quidel is a market ...
(Date:6/26/2019)... ... 2019 , ... Alice Branton today released research results from preclinical trials on ... which can prove to be beneficial for treating Hypomagnesemia. , The preclinical trial shows:, ... crystallite size , Over 142% increase in particle size , ...
(Date:6/11/2019)... ... June 10, 2019 , ... ... technology in an upcoming episode, scheduled to broadcast 4Q/2019. Check your local listings ... and will educate viewers about how its technology facilitates laboratories to improve efficiency ...
(Date:6/6/2019)... ... 05, 2019 , ... WCCT Global, Inc ., a full-service early phase ... they will be receiving 3 awards at the 2019 CRO Leadership Awards, to be ... the categories of overall Quality and Compatibility (Access to desired markets, cultural fit, timely ...
Breaking Biology Technology:
Cached News: