Navigation Links
Short stressful events may improve working memory
Date:7/23/2009

neuropathway was responsible for the improved memory, as they proposed, researchers injected one group of rats before the stressful forced-swim with a medicinal compound that blocks the pathway, and injected another group with saline. Results showed that the saline group, in which the corticosterone neuropathway was not blocked, performed better in the maze than the blocked group.

The researchers also determined that the stressful experience did not increase depression or anxiety-related behavior in the animals.

"It is known that stress has both positive and negative actions in the brain, but the underlying mechanism is elusive," said Yan. "Several key brain regions involved in cognition and emotions, including the prefrontal cortex, have been identified as the primary target of corticosteroid, the major stress hormone.

"Our current study identifies a novel mechanism that underlies the impact of acute stress on working memory, a cognitive process depending on glutamate receptor-mediated excitatory signals in prefrontal cortex circuits."

The investigators have expanded this research in several directions. In a paper currently under review, they have identified the key signaling molecules that link acute stress to the enhancement of glutamate receptors and working memory.

"In addition," noted Yan, "we have discovered that chronic stress suppresses the transmission of glutamate in the prefrontal cortex of male rodents, which is opposite to the facilitating effect of acute stress, and that estrogen receptors in female rodents make them more resilient to chronic stress than male rats.

"All these studies should bring new insights into the complex actions of stress in different circumstances that may be applicable to humans in the future," she said.


'/>"/>

Contact: Lois Baker
ljbaker@buffalo.edu
716-645-4606
University at Buffalo
Source:Eurekalert

Page: 1 2

Related biology news :

1. Study suggests genetic connection between short stature and arthritis
2. Living fossils have long- and short-term memory
3. Big cats, wild pigs and short-eared dogs -- oh, my!
4. Shorter wait means longer life for kidney transplant candidates
5. Some short-term memories die suddenly, no fading
6. Shortcuts of the mind lead to miscalculations of weight and caloric intake, says Penn study
7. Implanting embryonic cardiac cells prevents arrhythmias
8. Device prevents potential errors in childrens medications
9. A compound extracted from olives inhibits cancer cells growth and prevents their appearance
10. Vobile Launches VideoDNA Live; Enables Real-Time Digital Content Protection for Live Broadcast Events
11. Chemical compound prevents cancer in lab
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/15/2014)... Biologists at UC San Diego have succeeded in ... hormone responsible for growth and resistance to drought. ... studies to determine how the hormone helps plants ... by the continuing increase in the atmosphere,s carbon ... achievement appears in the April 15 issue of ...
(Date:4/15/2014)... Looking at the question of how social behavior has ... universities in Mainz and Basel have gained new insights ... simply compete for food. Rather the siblings share what ... absent," explained Dr. Jol Meunier of the Evolutionary Biology ... University of Mainz (JGU). The team of biologists from ...
(Date:4/15/2014)... (April 15, 2014) The American Association of Anatomists ... All awards will be presented during the Closing ... Hotel on Tuesday, April 29th at 7:30 p.m. during ... , The 2014 award winners are: , ... PhD, of the Icahn School of Medicine at Mount ...
Breaking Biology News(10 mins):Biologists develop nanosensors to visualize movements and distribution of plant hormone 2Sibling cooperation in earwig families gives clues to early evolution of social behavior 2American Association of Anatomists 2014 award winners 2
... Spanish scientists have analysed the temperature and salt levels of ... the evolution of each variable. Their research shows that, since ... hotter and saltier, and that, since the 1990s, this process ... deep layer of the Western Mediterranean increases by 0.002C, and ...
... Miami (UM) has been selected to receive a $1.4 ... to strengthen the UM undergraduate science education program. The ... will use the resources to help attract first-generation college ... sciences to pursue careers in science. , "HHMI ...
... of Oxford and Royal Holloway University of London have discovered that ... works best if applied to young plants and is enhanced by ... (20 May) in the open-access journal PLoS Pathogens . ... is a common method for controlling a variety of insect ...
Cached Biology News:Temperature and salt levels of the Western Mediterranean are on the increase 2UM receives 5th consecutive Howard Hughes Medical Institute grant for science education 2Study uncovers optimal ecology of bioinsecticide 2
(Date:1/15/2014)... January 15, 2014 This webinar ... on nonclinical and clinical safety assessment in biosimilars. ... guide a path for biosimilar drug development, however ... of biosimilarity with regards to quality, safety and ... of biosimilar drug development and registration, development strategies ...
(Date:1/15/2014)... NC (PRWEB) January 15, 2014 ... an enhancement to its Online Web Portal for Life ... now have the ability to specify the subject matter ... nearly 50 life science sub-domains. This will help reduce ... and scientific fields, and decrease the likelihood of error. ...
(Date:1/14/2014)... Doylestown, PA (PRWEB) January 14, 2014 ... – 11 p.m. , Location: Warrington Country Club, 1360 ... Hepatitis B Foundation, the only national nonprofit organization solely ... improving the quality of life for those affected worldwide, ... 11 at Warrington Country Club in Warrington, Pa. ...
(Date:1/14/2014)... York, NY (PRWEB) January 14, 2014 ... initiated coverage of Alliqua, Inc. (OTCQB: ALQA). Alliqua ... and marketing proprietary products to serve the wound ... , In late 2012, Alliqua was restructured ... launched the company’s new strategy to become a ...
Breaking Biology Technology:Xtalks Life Sciences Webinar Examines Safety Assessment of Biosimilars 2DTS Improves Efficiency for Life Science Document Translations 2Hepatitis B Foundation to Host Annual Crystal Ball Gala 2EquitiesIQ Initiates Coverage of Alliqua, Inc. 2EquitiesIQ Initiates Coverage of Alliqua, Inc. 3
... BioSpecifics Technologies Corp. (OTC Bulletin Board: BSTC), a ... today announced that it has received notification from The ... been approved for listing on the NASDAQ Global Market. ... 2009 on NASDAQ at market open under the symbol ...
... 6 /PRNewswire-FirstCall/ - SemBioSys Genetics Inc. (TSX:SBS), a ... today announced it has received US$2,500,000 from MannKind ... the option agreement and issuance of 2,400,000 units ... The transaction provides MannKind with the option to ...
... Star Scientific (Nasdaq :STSI) announced today that its ... its Star Tobacco, Inc. subsidiary, recently completed a ... dissolvable smokeless tobacco to relieve cigarette withdrawal symptoms ... (NRT). The study, which included 49 cigarette smokers, ...
Cached Biology Technology:BioSpecifics Technologies Corp. Announces Listing on NASDAQ Global Market 2SemBioSys receives US$2.5 million from option agreement with MannKind for plant-produced insulin 2SemBioSys receives US$2.5 million from option agreement with MannKind for plant-produced insulin 3Star Scientific Announces Successful Completion of Product Satisfaction Study - Results Show Potential for Development and Manufacturing of New Pharmaceutical Product for Smoking and Smokeless Tobacco Cessation 2Star Scientific Announces Successful Completion of Product Satisfaction Study - Results Show Potential for Development and Manufacturing of New Pharmaceutical Product for Smoking and Smokeless Tobacco Cessation 3Star Scientific Announces Successful Completion of Product Satisfaction Study - Results Show Potential for Development and Manufacturing of New Pharmaceutical Product for Smoking and Smokeless Tobacco Cessation 4
...
Rabbit polyclonal antibody to NMDA NR2B [Tyr1336]...
ImmunoPure Plus Immobilized Protein G, , , , Support: Cross-linked 6%, beaded agarose , Capacity: > 20 mg human IgG/ml of gel ...
Mouse monoclonal antibody to FMN2 - formin 2...
Biology Products: