Navigation Links
Fear boosts activation of young, immature brain cells
Date:6/14/2011

-week-old newborn nerve cells in the hippocampus that are derived from adult neural stem cells. Adult stem cells appear to differentiate continually into new nerve cells nearly 100 each day yet half of those newborn neurons are slated for death within four weeks after their birth. If they are highly activated, however such as in learning new complex information many more of them will survive and presumably help in establishing new memories in the brain.

Kaufer, who conducts research on the effects of stress on the brain, knew that many types of positive and negative experiences, such as exercise and stress, affect the rate of neurogenesis in the hippocampus. Along with graduate students Elizabeth Kirby, the lead author of the study, and Aaron Friedman, she was intrigued by the idea that emotions might affect neurogenesis in the hippocampus, since the brain's clearinghouse for emotions, the amygdala, is connected to the hippocampus via multiple neural circuits. To test this, Kirby focused on the basolateral amygdala, the region of the almond-shaped structure that handles negative emotions, including stress, anxiety and fear.

Using rats, Kirby surgically destroyed the basolateral amygdala and discovered that the production of new nerve cells in the hippocampus decreased. To make sure that the cell damage created when the amygdala was surgically destroyed was not affecting the experiment, the researchers borrowed a gene therapy technique from Robert Sapolsky's lab at Stanford University to genetically introduce potassium channels into the amygdala, which shut down the activity of the nerve cells without causing injury. This also decreased neurogenesis in the hippocampus.

They next tested Gage's theory that new neurons are especially sensitive to input two weeks after they form. Kirby and Kaufer labeled hippocampal cells created over a three-day period in a group of rats, and then conditioned a fear response in these rats two weeks later.
'/>"/>

Contact: Robert Sanders
rsanders@berkeley.edu
510-643-6998
University of California - Berkeley
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. New parallelization technique boosts our ability to model biological systems
2. Sport doctors say non-alcoholic wheat beer boosts athletes health
3. New lignin lite switchgrass boosts biofuel yield by more than one-third
4. Scientists find that evergreen agriculture boosts crop yields
5. Computer-based video analysis boosts data gathering in behavioral studies
6. Mannitol boosts effectiveness of potential cord blood treatment for cerebral palsy in lab animals
7. Less is more when restraining calories boosts immunity
8. Single gene dramatically boosts yield, sweetness in tomato hybrids, CSHL-Israeli study finds
9. Ritalin boosts learning by increasing brain plasticity
10. An apple a day? Study shows soluble fiber boosts immune system
11. World-class protection boosts Australias Great Barrier Reef
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Fear boosts activation of young, immature brain cells
(Date:3/24/2015)... March 24, 2015   NexID Biometrics LLC, ... security-authentication needs, today announced the beginning of shipments of ... The company, based in Potsdam, ... three-day Connect:ID Expo, which began here today at the ... version 2.0 of its SDK boosts the accuracy rate ...
(Date:3/23/2015)... 2015 SoundView Technology Group issues a new research ... ) Wocket smart wallet. SoundView was one of the selected user ... with the Wocket in multiple scenarios and outlets. ... other retailers, making both debit and credit card payments.  ... "If the company meets their plans in 2015, it would ...
(Date:3/23/2015)... -- In the 2014 fiscal year, irs.gov recorded over $100 ... accounts for a fraction of the estimated losses for ... $11 billion globally. The polygraph has traditionally been used ... Investor Mark Saint Juste along with former ... partnered to administer the test in a new way: ...
Breaking Biology News(10 mins):NexID Begins Shipments Of Version 2.0 Fake-Finger-Detection Solution 2Technology Research Note Update from SoundView; Real-World Usage and Feedback of Wocket Smart Wallet at CVS, Whole Foods and other Retailers 2Technology Research Note Update from SoundView; Real-World Usage and Feedback of Wocket Smart Wallet at CVS, Whole Foods and other Retailers 3Technology Research Note Update from SoundView; Real-World Usage and Feedback of Wocket Smart Wallet at CVS, Whole Foods and other Retailers 4Polygraph Test Now Used to Protect Investors From Fraud 2Polygraph Test Now Used to Protect Investors From Fraud 3
... Richer, speaking at his 4th annual Nutrition & The Eye ... the University of Missouri in St. Louis, says molecular medicine ... when all other therapies have been exhausted. "These nutritional ... in cardiology , cancer research and some human studies", Dr ...
... 14, 2011 Novocure today announced that the ... NovoTTF-100A System (NovoTTF) for the treatment of adult ... tumor recurrence after receiving chemotherapy. The portable, ... patients maintain their normal daily activities. The NovoTTF ...
... A team led by researchers at the National Institutes of ... the melanoma genome, the DNA code of the deadliest form ... using whole-exome sequencing, an approach that decodes the 1-2 percent ... in the April 15, 2011, early online issue of ...
Cached Biology News:Low-cost molecular medicine should be included in modern eye physicians' tool kit 2FDA approves the NovoTTF-100A system for the treatment of patients with recurrent glioblastoma multiforme (GBM) brain tumors 2NIH researchers complete whole-exome sequencing of skin cancer 2NIH researchers complete whole-exome sequencing of skin cancer 3NIH researchers complete whole-exome sequencing of skin cancer 4NIH researchers complete whole-exome sequencing of skin cancer 5
(Date:4/30/2015)... , April 30, 2015  Asterias Biotherapeutics, Inc. (NYSE ... field of regenerative medicine, today announced that it will ... May 7, 2015 after the close of the U.S. ... and webcast on Thursday, May 7, 2015 at 4:30 ... results and recent corporate developments. For both ...
(Date:4/30/2015)... 30, 2015 Available in select ... http://www.lespausa.com , Phytomer’s DOUCEUR INTEMPORELLE Restorative Shield ... skin while battling the weakening threat of inflammaging, ... is formulated with star ingredient GLYCOSEA, a complex ... a complex of soothing minerals and trace elements. ...
(Date:4/29/2015)... April 30, 2015 According to ... Market by Product (Portable & Non-Portable), Component (Accelerometer, ... Automotive, Chemical, Metal & Mining, & Others), & ... market is expected to reach $1,453.76 Million by ... 71 market data tables and 92 figures spread ...
(Date:4/29/2015)... , April 29, 2015 Cambrex Corporation (NYSE: ... will be released on Friday, May 1, 2015 before the ... The Company will host a conference call to discuss ... When: , Friday, May 1, 2015 ... , 1-888-468-2440 for U.S.1-719-325-2454 for International  Passcode:  7993632 ...
Breaking Biology Technology:Asterias Biotherapeutics to Report First Quarter Results on May 7, 2015 2Asterias Biotherapeutics to Report First Quarter Results on May 7, 2015 3Phytomer introduces DOUCEUR INTEMPORELLE Restorative Shield Cream 2Phytomer introduces DOUCEUR INTEMPORELLE Restorative Shield Cream 3Vibration Monitoring Equipment (Portable & Non-Portable) Market worth $1,453.76 Million by 2020 - New Report by MarketsandMarkets 2Vibration Monitoring Equipment (Portable & Non-Portable) Market worth $1,453.76 Million by 2020 - New Report by MarketsandMarkets 3Vibration Monitoring Equipment (Portable & Non-Portable) Market worth $1,453.76 Million by 2020 - New Report by MarketsandMarkets 4
... integrating patient medical information securely and seamlessly across multiple ... the Midwest. , ,A recent partnership between Symphony ... CareEvolution seeks to implement a novel clinical information-sharing ... so-called "federated" model utilizes a peer-to-peer record locator service ...
... A Wisconsin-based portal to educational information about books ... from the Association of Educational Publishers . ... supplemental educational resources for nearly three decades, honored ... category titled "Portal for Young Adults and Children." ...
... generation ago, then-Gov. Lee Dreyfus made a few waves ... should become "the blue-eyed Arabs of the Upper Midwest" ... , ,Like many of his ideas, often delivered ... about them, this Dreyfus proposal simultaneously stirred the imagination ...
Cached Biology Technology:Symphony Corp. and CareEvolution to partner 2Fresh water could be a deep economic wellspring for Wisconsin 2Fresh water could be a deep economic wellspring for Wisconsin 3
TP-1 (NDOG1)...
Ras-related C3 botulinum toxin substrate 1...
Mouse monoclonal [6G11] to Cytohesin 1 + 2 ( Abpromise for all tested applications)....
... Express Cloning Checker Kits provide two ... after transformation without time-consuming plasmid preparation. By ... I, all you need to do is ... bacteria directly from the transformation plates into ...
Biology Products: