HOME >> BIOLOGY >> NEWS
Constant lighting may disrupt development of preemies' biological clocks

That is the suggestion of a new study reported in the Aug. 21 issue of the journal Pediatric Research.

The study, which was headed by Douglas McMahon, professor of biological sciences at Vanderbilt University and an investigator at the Vanderbilt Kennedy Center for Research on Human Development, reports that exposing baby mice to constant light keeps the master biological clock in their brains from developing properly and this can have a lasting effect on their behavior.

"We are interested in the effects of light on biological clocks because they regulate our physiology extensively, and also have an important effect on our mood," McMahon said. "This study suggests that cycling the lights in NICUs may be better than constant lighting for premature babies' from the perspective of developing their internal clocks."

Every year about 14 million low-weight babies are born worldwide and are exposed to artificial lighting in hospitals.

"Today, we realize that lighting is very important in nursing facilities, but our understanding of light's effects on patients and staff is still very rudimentary," said William F. Walsh, chief of nurseries at Vanderbilt's Monroe Carrel Jr. Children's Hospital. "We need to know more. That is why studies like this are very important."

Although older facilities still use round-the-clock lighting, modern NICUs, like that at Vanderbilt, cycle their lighting in a day/night cycle and keep lighting levels as low as possible, Walsh said. Also, covers are kept over the isolets that hold the babies in an effort to duplicate the dark conditions of the womb.

The finding that exposure to constant light disrupts the developing biological clock in baby mice provides an underlying mechanism that helps explain the results of several previous clinical studies. One found that infants from neonatal units with cyclic lighting tend to begin sleeping through the night more quickly than those from un
'"/>

Contact: David F. Salisbury
david.salisbury@vanderbilt.edu
615-343-6803
Vanderbilt University
21-Aug-2006


Page: 1 2 3 4

Related biology news :

1. Constant din of barking causes stress, behavior changes in dogs in shelters
2. Evolution: Constant Change and Common Threads
3. Low-energy LED lighting project is streets ahead
4. Prozac exposure found to disrupt mussel reproduction
5. Carbon cycle was already disrupted millions of years ago
6. Yale researchers find environmental toxins disruptive to hearing in mammals
7. For the first time: Longevity modulated without disrupting life-sustaining function
8. New method enables gene disruption in destructive fungal pathogen
9. Scientists determine structure of enzyme that disrupts bacterial virulence
10. New research on endocrine disrupting chemicals to be presented at ENDO 2005 87th Annual meeting
11. Currents could disrupt ocean food chain

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


(Date:3/27/2021)... ... March 25, 2021 , ... Phlexglobal announced ... Planet Group, has selected Phlexglobal and its innovative regulatory SaaS software, PhlexSubmission, as ... a comprehensive review of five regulatory software companies, with the review team including ...
(Date:3/27/2021)... ... 25, 2021 , ... The 2021 Virtual Conference on Clinical Trial Supply-Europe ... More and more, clinical trial supply conferences are featuring speakers and forums that ... Asymmetrex’s founder and CEO, James L. Sherley, M.D., Ph.D., presented a talk ...
(Date:3/23/2021)... ... March 23, 2021 , ... G-CON Manufacturing (G-CON), the ... by Matica Biotechnology (Matica Bio), a contract development and manufacturing organization (CDMO) specializing ... the cleanroom build out for its new GMP production facility in College Station, ...
Breaking Biology News(10 mins):
(Date:3/27/2021)... ... March 24, 2021 , ... ... Life Sciences and Healthcare firms of all sizes, adds depth to its team ... specialist. Pardillo, who earned his doctorate in computational chemistry from Florida International University ...
(Date:3/27/2021)... ... March 24, 2021 , ... ABI Wellness, ... and reporting approach designed under CEO Mark Watson, today announced a webinar dedicated ... featuring guest speakers Dr. Cameron Clark, Neuropsychologist and Founder of Sharp Thinking, and ...
(Date:3/27/2021)... ... ... The Xtalks editorial team is pleased to announce the launch of the ... joined by editorial team members Ayesha Rashid, Sydney Perelmutter and Mira Nabulsi to discuss ... including insights from industry experts. , The Xtalks Life Science podcast will feature ...
(Date:3/23/2021)... Conn. (PRWEB) , ... March 23, 2021 , ... ... develops solutions for characterizing microbiome populations down to the strain level, recently unveiled ... applications. , Not all microbes are created equal: some are easy to ...
Breaking Biology Technology:
Cached News: