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

0

GOOD

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:12/16/2009)... Dec. 9 CSC (NYSE: ... American Association for Laboratory Accreditation awarded the ... 17025:2005 accreditation to the company,s Test Lab, ... Labs located in Fairmont, W.Va. The Test ... in the world to achieve this accomplishment. ...
(Date:12/15/2009)... has just signed an agreement with the British Society ... affiliation with the journal Biogerontology for an ... appoint one member of the Biogerontology editorial ... annually. Springer will sponsor the society and provide ... on www.springerlink.com . , Biogerontology ...
(Date:12/15/2009)... ., Despite the fact that physical space follows ... to how space is encoded in their language. Some, ... ,left, right, front, back, to talk about spatial relations, ... at all times for all scales: "The spoon is ... by your Northern leg". Whether not only spatial language ...
Breaking Biology News(10 mins):CSC's Identity Management and Biometric Test Lab Achieves ISO/IEC 17025 Accreditation 2More than a jump to the left 2UBC researchers find first ever wanderlust gene in tiny bony fish 9474 1Nephrologists Indicate High Interest in AMAG Pharmaceuticals Newly Approved Feraheme According to Latest BioTrends Report 53682 1Nephrologists Indicate High Interest in AMAG Pharmaceuticals Newly Approved Feraheme According to Latest BioTrends Report 53682 2Nephrologists Indicate High Interest in AMAG Pharmaceuticals Newly Approved Feraheme According to Latest BioTrends Report 53682 3100+ Nurses to Rally in SF Wed to Demand Stronger Swine Flu Safety Protections 3A California Hospitals Remain Unprepared Despite First Nurse Death 53680 1100+ Nurses to Rally in SF Wed to Demand Stronger Swine Flu Safety Protections 3A California Hospitals Remain Unprepared Despite First Nurse Death 53680 2100+ Nurses to Rally in SF Wed to Demand Stronger Swine Flu Safety Protections 3A California Hospitals Remain Unprepared Despite First Nurse Death 53680 3
... Scientists at Pacific Northwest National Laboratory,have discovered ... strips that,will enable creation of a portable biosensor ... involving chemical or nerve agents, the need to ... the worried well. , The sensor components resemble ...
... an upcoming issue of G&D, Drs. Maria Divina Deato ... formation of an alternative transcriptional core promoter complex directs ... whole new level of transcriptional control of terminal cell ... September 1 print date at www.genesdev.org . , ...
... to consumer products from carpets to cell phones just ... are concerned that one class of these chemicals called ... fire-related injuries and property damage. , After several ... environment as contaminants, and trace levels of these chemicals ...
Other Biology News:Truly sick or simply scared? 2SRMs track fire retardants in humans and environment 2
(Date:12/16/2009)... InVitria has what scientists have been asking for! Zap-CHO is ... growth and productivity of CHO cells. Developed for scientists seeking ... well defined and consistent recombinant CHO supplement. , ... ... -- Scientists working with CHO cells can now access an ...
(Date:12/15/2009)... Institute (JBEI), one of three Department of Energy (DOE) ... service to protect its valuable intellectual property. , ... ... December 15, 2009 -- Surety, LLC , the ... today announced that the Joint BioEnergy Institute (JBEI), one ...
(Date:12/15/2009)... Del. and CHARLOTTESVILLE, Va., Dec. 15 /PRNewswire-FirstCall/ ... and the University of Virginia (UVa) in ... into a strategic research collaboration to enhance ... artery disease (CAD) with a secondary focus ... http://www.newscom.com/cgi-bin/prnh/20091027/PH99766LOGO ) ,, The collaborative ...
(Date:12/15/2009)... 15 On January 20th, 2010, the ... Medical Publication Professionals (ISMPP) will be held at ... More than 100 attendees are expected at this ... professionals, editors, publishers, medical writers and medical agencies ... and the impact of guidelines and regulations such ...
Breaking Biology Technology:Online Video of InVitria's Zap-CHO Helps Scientists Maximize CHO Cell Culture Performance 2Joint BioEnergy Institute Selects Surety's AbsoluteProof to Protect the Integrity and Legally Defend the Authenticity of its Scientific Intellectual Property 2Joint BioEnergy Institute Selects Surety's AbsoluteProof to Protect the Integrity and Legally Defend the Authenticity of its Scientific Intellectual Property 3Joint BioEnergy Institute Selects Surety's AbsoluteProof to Protect the Integrity and Legally Defend the Authenticity of its Scientific Intellectual Property 4Joint BioEnergy Institute Selects Surety's AbsoluteProof to Protect the Integrity and Legally Defend the Authenticity of its Scientific Intellectual Property 5AstraZeneca and the University of Virginia Sign Strategic Research Collaboration to Develop Novel Treatments for Cardiovascular Disease 2AstraZeneca and the University of Virginia Sign Strategic Research Collaboration to Develop Novel Treatments for Cardiovascular Disease 3Announcing ISMPP EU 2010 - the First European Meeting of the International Society for Medical Publication Professionals, Royal College of Physicians, London, UK, January 20, 2010 2
... Inc. (Nasdaq: CALP ) today announced that its ... York City will be webcast on,Tuesday, September 25 at ... will be providing an update on the company,s business. ... http://www.caliperls.com and clicking on the,link for the UBS ...
... ... Operations, FORT ... IMDS) a pioneer in laser,optical breast cancer imaging systems, announced completion ... The Company has sold its headquarters building for $4.4 million ...
... company,Neuralstem, Inc. (AMEX: CUR ), announced today ... Patent and Trademark Office (USPTO) has issued its,first ... Inc. (Nasdaq:,STEM) patents requested by Neuralstem. (Logo: ... has rejected on multiple grounds all of the ...
Other Biology Technology:Imaging Diagnostic Systems Generates Cash From Building Sale 2Imaging Diagnostic Systems Generates Cash From Building Sale 3Patent Office Rules in Neuralstem's Favor in Dispute with StemCells, Inc. 2Patent Office Rules in Neuralstem's Favor in Dispute with StemCells, Inc. 3
...
Wellpro 96 an automated liquid handling system for 96-well plates that quickly and accurately prepares large quantities of serial dilutions. The Wellpro also performs plate to plate transfers using ...
...
... 45° Fixed Angle rotor for ... CL2, Centra CL3/CL3R, HN-SII or ... style rotor accepts 15 mL ... disposable conical tubes as well ...
Biology Products: