Featured Research

from universities, journals, and other organizations

Key Developmental Mechanisms Of The Amygdala Identified

Date:
January 17, 2009
Source:
Children's National Medical Center
Summary:
For the first time, scientists have successfully identified a key developmental program for the amygdala -- the part of the limbic system that impacts how the brain creates emotional memories and responses. This knowledge could help scientists to better understand autism and similar disorders in which altered function of this region is known to occur.

For the first time, scientists at Children's National Medical Center have successfully identified a key developmental program for the amygdala—the part of the limbic system that impacts how the brain creates emotional memories and responses.

Related Articles


This knowledge could help scientists to better understand autism and similar disorders in which altered function of this region is known to occur.

The findings, published in the February edition of Nature Neuroscience, identify a group (otherwise known as a pool) of precursor cells of neurons that are earmarked specifically for the amygdala and comprise part of a unique system of growth and development for this portion of the brain.

"Despite its central role in normal brain function and behavior, little has been known about how neuronal cell diversity is generated during development of the amygdala," said senior author Joshua Corbin, PhD, of the Center for Neuroscience Research at Children's National. "It was thought that development of this region occurred similarly to other brain structures like the cerebral cortex, but our findings indicate that a specific precursor pool exists that is pre-assigned exclusively to the limbic system. It is a breakthrough to our understanding of this little studied region of the brain."

Using studies of embryonic mice, Corbin and his team located two specific pools of precursor cells marked by the transcription factor Dbx1 that migrate from both the ventral pallium and the preoptic area—a previously undiscovered pool of migratory cells—to create the requisite mix of excitatory and inhibitory neurons that ultimately comprise the amygdala. Remarkably, the preoptic area precursor cells are exclusive contributors to the development of the limbic system, and no other portion of the brain.

"Altered function of the amygdala is a hallmark characteristic of disorders such as autism," said Dr. Corbin. "A more clear understanding of the normal development of this important brain structure provides a roadmap to understand the consequences of altered brain development in neurodevelopmental disorders."

The study was funded by the National Institute of Drug Abuse at the National Institutes of Health.


Story Source:

The above story is based on materials provided by Children's National Medical Center. Note: Materials may be edited for content and length.


Journal Reference:

  1. Hirata et al. Identification of distinct telencephalic progenitor pools for neuronal diversity in the amygdala. Nature Neuroscience, 2009; DOI: 10.1038/nn.2241

Cite This Page:

Children's National Medical Center. "Key Developmental Mechanisms Of The Amygdala Identified." ScienceDaily. ScienceDaily, 17 January 2009. <www.sciencedaily.com/releases/2009/01/090113074144.htm>.
Children's National Medical Center. (2009, January 17). Key Developmental Mechanisms Of The Amygdala Identified. ScienceDaily. Retrieved December 21, 2014 from www.sciencedaily.com/releases/2009/01/090113074144.htm
Children's National Medical Center. "Key Developmental Mechanisms Of The Amygdala Identified." ScienceDaily. www.sciencedaily.com/releases/2009/01/090113074144.htm (accessed December 21, 2014).

Share This


More From ScienceDaily



More Health & Medicine News

Sunday, December 21, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

The Best Tips to Curb Holiday Carbs

The Best Tips to Curb Holiday Carbs

Buzz60 (Dec. 19, 2014) It's hard to resist those delicious but fattening carbs we all crave during the winter months, but there are some ways to stay satisfied without consuming the extra calories. Vanessa Freeman (@VanessaFreeTV) has the details. Video provided by Buzz60
Powered by NewsLook.com
Sierra Leone Bikers Spread the Message to Fight Ebola

Sierra Leone Bikers Spread the Message to Fight Ebola

AFP (Dec. 19, 2014) More than 100 motorcyclists hit the road to spread awareness messages about Ebola. Nearly 7,000 people have now died from the virus, almost all of them in west Africa, according to the World Health Organization. Video provided by AFP
Powered by NewsLook.com
Researchers Test Colombian Village With High Alzheimer's Rates

Researchers Test Colombian Village With High Alzheimer's Rates

AFP (Dec. 19, 2014) In Yarumal, a village in N. Colombia, Alzheimer's has ravaged a disproportionately large number of families. A genetic "curse" that may pave the way for research on how to treat the disease that claims a new victim every four seconds. Duration: 02:42 Video provided by AFP
Powered by NewsLook.com
The Best Protein-Filled Foods to Energize You for the New Year

The Best Protein-Filled Foods to Energize You for the New Year

Buzz60 (Dec. 19, 2014) The new year is coming and nothing will energize you more for 2015 than protein-filled foods. Fitness and nutrition expert John Basedow (@JohnBasedow) gives his favorite high protein foods that will help you build muscle, lose fat and have endless energy. Video provided by Buzz60
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins