Navigation Links
General anesthetics lead to learning disabilities in animal models
Date:10/22/2009

ner said.

Turner and other neuroscientists began considering the potential effects of anesthesia on children after making the connection in animal studies that drugs such as MK801, which act in a similar manner to some general anesthetics by blocking the NMDA receptor, can cause brain injury in immature rodents.

Using rats equivalent in age to children in their last trimester of development through to two years old, the researchers injected MK801, blocking the NMDA receptor in the brain. Within hours, they noticed evidence of injury in many brain regions. The blocking of the receptor, and subsequent inhibition of calcium influx into the cells, caused changes in a variety of proteins critical to normal brain cell function in the rats, particularly communication.

"It's not just that cells are dying," Turner said, "but we have now identified other pathologies that follow from blocking the NMDA receptor. For example, we have found that blocking the receptor results in the turning off of the brain's ability to regenerate new cells, which means that the brain cannot compensate for the cells that die.

"Imagine all of this going on during the time the brain is still developing," Turner added. "With all of these changes, it's not surprising that certain brain functions are diminished as animals get older. For example, immature animals exposed to MK801 are later unable to respond to auditory cues in a way that would be considered normal. A lot of learning in all animals depends on being able to efficiently process auditory information."

These findings, Turner said, could also have implications for research on schizophrenia. Many of the molecular, cellular and behavioral changes seen in this disorder NMDA receptor blockade, changes in proteins important for cell-to-cell communication, auditory deficits, and developmental brain injury are key features of the animal model used by the Turner lab.

"For a long time, res
'/>"/>

Contact: Jessica Guenzel
jguenzel@wfubmc.edu
336-716-3487
Wake Forest University Baptist Medical Center
Source:Eurekalert

Page: 1 2 3

Related medicine news :

1. Glades General Hospital First in Palm Beach County to Provide On-Site Electronic Birth Registration
2. Academy of General Dentistry Launches Campaign to Focus on Tooth Erosion
3. VIDEO from Medialink and General Motors: On and Off the Track
4. New lung cancer guidelines oppose general CT screening
5. New Lung Cancer Guidelines Oppose General CT Screening
6. Medina General Hospital and University Hospitals Agree to Pursue Affiliation
7. Keith Taft Named General Manager of UltraTape Industries
8. Acting Surgeon General Announces National Initiatives to Protect Children by Reducing Exposure to Secondhand Smoke
9. General Colin Powell Speaks Out for Prostate Cancer Prevention
10. LMS integrated obstetrics solution achieves general availability
11. VIDEO from Medialink and General Mills: Digestive Health
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/10/2014)... The benefits of medical imaging far outweigh the ... Right Way, with The Right Radiation Dose. However, overuse ... Mayo Clinic is leading a collaborative effort to ensure ... published online in the Journal of Patient Safety ... Joint Commission, the Intersociety Accreditation Commission, and the Centers ...
(Date:7/10/2014)... For decades, health-conscious people around the globe have ... figuring this was one of the paths to good ... clinical trials of antioxidant supplements have repeatedly dashed the ... their cancer risk. Virtually all such trials have ... In fact, in several trials antioxidant supplementation has been ...
(Date:7/10/2014)... Men who experience hot flashes are unlikely to ... from their silent suffering if they are willing ... a Baylor University case study., After seven weeks of ... hot flashes following prostate cancer surgery showed a drastic ... impressive improvement in sleep quality, according to the study., ...
(Date:7/9/2014)... MA -- Vasectomy was associated with a small increased ... advanced or lethal prostate cancer according to a new ... researchers found that the association remained even among men ... of lethal cancer cannot be explained by diagnostic bias. ... date to look at the link between vasectomy and ...
(Date:7/9/2014)... cancer, researchers have uncovered mutations in a cell-signaling pathway ... knowledge may expand treatments for patients because drugs targeting ... are in clinical trials. , Reporting July 9 in ... (TCGA), including researchers at Washington University School of Medicine ... studied tumors from 230 patients with lung adenocarcinoma. , ...
Breaking Medicine News(10 mins):Health News:Mayo Clinic calls for standardization of safe imaging protocols for children 2Health News:How antioxidants can accelerate cancers, and why they don't protect against them 2Health News:Men's hot flashes: Hypnotic relaxation may ease the discomfort men don't talk about 2Health News:Men's hot flashes: Hypnotic relaxation may ease the discomfort men don't talk about 3Health News:Men's hot flashes: Hypnotic relaxation may ease the discomfort men don't talk about 4Health News:Vasectomy may increase risk of aggressive prostate cancer 2Health News:Lung cancer study hints at new treatments 2
... CHICAGO, June 24 Bally Total Fitness Holding,Corporation today ... its Chief Executive Officer, effective July 1. Mr. Sheehan ... Directors., Mr. Sheehan, age 46, served as the ... serving as Chief Operating Officer, Mr. Sheehan,served as Executive ...
... control symptoms better, studies show , , TUESDAY, June 24 ... delivery system for an older drug appear to hold ... In the first study, patients taking the drug SLV308 ... tremors and slowness of movement. The results also indicate ...
... announced today Reproductive Health Matters , May 2008 ... Promoting Sexual and Reproductive rights". Under conditions of global ... growing numbers of refugees and internally displaced persons (IDPs) ... right to have rights,. By the end of ...
... Devices known as brain-machine interfaces could someday be ... prosthetic limbs with just their thoughts. Now, University of ... devising a way for computerized devices not only to ... with the brain as it learns. , Instead of ...
... but doing little to ... within the facility, CHICAGO, June 24 The American ... survey asking 1,000 women,their opinions on medical spas. Findings revealed ... customers of these facilities.,Yet half of those women are compromising ...
... The Rehabilitation Institute,of Chicago and MediCom Worldwide, Inc. ... July 18th and 19th. The meeting will be ... University in Chicago., This year, the conference ... scientific agenda will focus on the latest information,issues, ...
Cached Medicine News:Health News:Bally Total Fitness Announces New Chief Executive Officer 2Health News:New Hope for Parkinson's Patients 2Health News:May 2008 issue on conflict and crisis settings: Promoting sexual and reproductive rights 2Health News:Researchers develop neural implant that learns with the brain 2Health News:Researchers develop neural implant that learns with the brain 3Health News:Millennials' Medspa Influence 2Health News:3rd Annual Conference on Pain Jointly Sponsored By Rehabilitation Institute of Chicago and MediCom Worldwide, Inc. 2
(Date:1/15/2014)... , Jan. 15, 2014  Manufacturers, suppliers and distributors ... able to protect their most important business assets, ... ) Because of the highly-competitive ... remains one of the most litigious industry sectors ...
(Date:1/15/2014)... Inc. (Nasdaq: ECTE ) ("Echo"), a medical ... non-invasive, wireless continuous glucose monitoring system, today announced that ... CEO of Echo Therapeutics, will present at "TEN", Noble ... Mr. Doman will make a corporate presentation to ...
(Date:1/15/2014)... , Jan. 15, 2014 Reportlinker.com ... is available in its catalogue: ... Drug Forecast and Market Analysis to 2022 ... PharmaPoint: Atopic Dermatitis - India Drug Forecast ...
Breaking Medicine Technology:Intellectual Property Insurance for Medical-related Products and Services 2Echo Therapeutics to Present at the Noble Financial Capital Markets' Tenth Annual Equity Conference 2Echo Therapeutics to Present at the Noble Financial Capital Markets' Tenth Annual Equity Conference 3PharmaPoint: Atopic Dermatitis - India Drug Forecast and Market Analysis to 2022 2PharmaPoint: Atopic Dermatitis - India Drug Forecast and Market Analysis to 2022 3PharmaPoint: Atopic Dermatitis - India Drug Forecast and Market Analysis to 2022 4PharmaPoint: Atopic Dermatitis - India Drug Forecast and Market Analysis to 2022 5
The Guidant Fineline II Sterox is a steroid-eluting pacing lead designed for permanent implantation for either atrial or ventricular applications....
Steroid eluting pacemaker leads...
... Medtronic presents the Streamline family of temporary ... taken the gold standard in temporary pacing ... make them easy to use and less ... 6491 Unipolar Pediatric Temporary Pacing Lead is ...
Bipolar semi-floating pacing lead for temporary stimulation of the heart especially in emergency cases of bradycardial arrhythmias or for recording intracardiac ECGs....
Medicine Products: