Navigation Links
Does stress damage the brain?
Date:3/18/2008

Philadelphia, PA, March 18, 2008 Individuals who experience military combat obviously endure extreme stress, and this exposure leaves many diagnosed with the psychiatric condition of post-traumatic stress disorder, or PTSD. PTSD is associated with several abnormalities in brain structure and function. However, as researcher Roger Pitman explains, Although it is tempting to conclude that these abnormalities were caused by the traumatic event, it is also possible that they were pre-existing risk factors that increased the risk of developing PTSD upon the traumatic events occurrence. Drs. Kasai and Yamasue along with their colleagues sought to examine this association in a new study published in the March 15th issue of Biological Psychiatry.

The authors measured the gray matter density of the brains of combat-exposed Vietnam veterans, some with and some without PTSD, and their combat-unexposed identical twins using a technology called magnetic resonance imaging (MRI). The detailed images provided by the MRI scans then allowed the investigators to compare specific brain regions of the siblings. They found that the gray matter density of the pregenual anterior cingulate cortex, an area of the brain involved in emotional functioning, was reduced in veterans with PTSD, but not in their twins who had not experienced combat. According to Dr. Pitman, this finding supports the conclusion that the psychological stress resulting from the traumatic stressor may damage this brain region, with deleterious emotional consequences.

John H. Krystal, M.D., Editor of Biological Psychiatry and affiliated with both Yale University School of Medicine and the VA Connecticut Healthcare System, discusses the need for this kind of research because of two separate sets of prior findings: On the one hand, compelling data from animal research indicates that stress can cause brain atrophy and even neural death in some brain regions. On the other hand, the volume of several brain regions are highly heritable and small brain volumes, presumably related to reduced function, in the hippocampus may increase stress reactivity or impair the capacity for resilience. He adds that findings from this study suggest that volume reductions in [the anterior cingulate cortex] associated with PTSD arise as a consequence of stress exposure rather than emerging as a heritable trait, leaving one to conclude that the extent to which particular genes and environmental exposures interact to shape the development of the brain thus appears to be complex and region-specific.


'/>"/>

Contact: Jayne Dawkins
ja.dawkins@elsevier.com
215-239-3674
Elsevier
Source:Eurekalert

Related medicine news :

1. Planning for Health Emergencies Eases Stress of Family Travel
2. Stress Can Help Trigger Stroke
3. Groundbreaking Sign Chi Do Stress Management System Introduced by Dr. Anne Borik Now Available to the Public
4. Stress and fear can affect cancers recurrence
5. Brain stress system presents possible treatment
6. VIDEO from Medialink and Siemens: NFL Stars Stress the Importance of a Healthy Heart
7. New Scenic Relaxation Videos Help Reduce Stress, Promote Sense of Calm and Tranquility
8. Patients relatives are ignored by the health system and suffer emotional stress
9. Stress hormone impacts memory, learning in diabetic rodents
10. Stress may increase a womans risk of developing cervical cancer
11. Daily Stress May Raise Womens Risk of Cervical Cancer
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/27/2016)... Viejo, California (PRWEB) , ... June 27, 2016 , ... ... are fully customizable inside of Final Cut Pro X," said Christina Austin - CEO ... another unique style. Final Cut Pro X users can now reveal the ...
(Date:6/27/2016)... NY (PRWEB) , ... June 27, 2016 , ... ... using cutting edge technology to revolutionize the emergency ambulance transport experience for the ... are aware of how Uber has disrupted the taxi industry through the use ...
(Date:6/26/2016)... (PRWEB) , ... June 26, 2016 , ... On June ... sponsor of the 2016 Cereal Festival and World’s Longest Breakfast Table in Battle Creek, ... of the city’s history as home to some of the world’s leading providers of ...
(Date:6/26/2016)... ... June 26, 2016 , ... Brent Kasmer, a legally blind and certified personal trainer ... through a fitness app. The fitness app plans to fix the two major problems leading ... a one size fits all type program , They don’t eliminate all the ...
(Date:6/25/2016)... ... June 25, 2016 , ... Austin residents seeking Mohs surgery services, can ... Surgery and to Dr. Russell Peckham for medical and surgical dermatology. , Dr. Dorsey ... cancer. The selective fellowship in Mohs Micrographic Surgery completed by Dr. Dorsey was under ...
Breaking Medicine News(10 mins):
(Date:6/23/2016)... DUBLIN , June 23, 2016 ... the "Pharmaceutical Excipients Market by Type (Organic Chemical ... Preservative), Formulation (Oral, Topical, Coating, Parenteral) - Global Forecast ... The global pharmaceutical excipients ... 2021 at a CAGR of 6.1% in the forecast ...
(Date:6/23/2016)... , June 23, 2016 ... CAPR ), a biotechnology company focused on the ... announced that patient enrollment in its ongoing randomized ... has exceeded 50% of its 24-patient target. Capricor ... the third quarter of 2016, and to report ...
(Date:6/23/2016)... INDIANAPOLIS , June 23, 2016 If ... Leaders Scholarship is any indication, the future is in ... at www.diabetesscholars.org by the Diabetes Scholars Foundation ... the way of academic and community service excellence. ... since 2012, and continues to advocate for people with ...
Breaking Medicine Technology: