Navigation Links
Hormone levels contribute to stress resilience
Date:8/5/2009

Philadelphia, PA, 5 August 2009 - It is important to understand what biological mechanisms contribute to an individual's capacity to be resilient under conditions of extreme stress, such as those regularly experienced by soldiers, police, and firefighters. Dr. Charles A. Morgan III and his colleagues from Yale University and the VA National Center for PTSD have worked closely with collaborators at the Special Forces Underwater Warfare Operations Center to study special operations soldiers enrolled in the military Combat Diver Qualification Course (CDQC).

Dehydroepiandrosterone, or "DHEA" as it is commonly known, is a hormone that is secreted by the adrenal gland in response to stress. Although medical scientists have known for over a decade that DHEA provides beneficial, anti-stress effects in animals, they did not know until now whether this was also true for humans.

The scientists completed psychological and hormone assessments on a group of soldiers the day before they began the month-long CDQC, and immediately after their final pass/fail exam a highly stressful, nocturnal, underwater navigation exercise.

They found that soldiers with more DHEA performed better during the final underwater navigation exam than those with less DHEA. These findings are being published by Elsevier in the August 15th issue of Biological Psychiatry.

Underwater navigation is a task that relies on an area of the brain called the hippocampus that is very sensitive to the negative effects of stress. "Animal studies have shown that DHEA buffers against stress, in part, by modulating receptors in this region of the brain," explained Dr. Morgan. "These findings are important in understanding why and how soldiers may differ in their ability to tolerate stress and also raise the possibility that, in the future, compounds like DHEA might be used to protect military personnel from the negative impact of operational stress."

Clearly, additio
'/>"/>

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

Page: 1 2

Related biology news :

1. Hormone clue to root growth
2. Lack of happiness hormone serotonin in the brain causes impaired maternal behavior in mice
3. Fatty foods -- not empty stomach -- fire up hunger hormone
4. Hormone-mimics in plastic water bottles -- just the tip of the iceberg?
5. Pregnancy hormone predicts postpartum depression
6. Protein that regulates hormones critical to womens health found in pituitary
7. Hormone therapy associated with reduced colorectal cancer risk
8. Food can affect a cell in the same way hormones do
9. Children distressed by family fighting have higher stress hormones
10. Apelin hormone injections powerfully lower blood sugar
11. Birth control has long-term effect on hormone exposure
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/15/2014)... disease (CVD) claims 17 million lives each year, while ... million. 1 New research presented by international scientists ... France on September 15, 2014, suggests that milk consumption ... At the Milk and Dairy Products in Human ... for hypertension and CVD was examined by Dr. Sabita ...
(Date:9/15/2014)... Amid conflicting reports about the need for vitamin ... published today suggests that adequate levels of this essential ... elderly, and women who are or may become pregnant. ... also important, researchers said, but often complicated by the ... difficult to obtain through diet alone. It has been ...
(Date:9/12/2014)... , September 12, 2014 ... http://www.researchandmarkets.com/research/trs4c7/global ) has announced the addition of ... 2014" report to their offering. ,     ... Report 2014 is a professional and in-depth ... global fingerprint lock industry. , ,The report ...
Breaking Biology News(10 mins):Dairy consumption linked to lower blood pressure and cardiovascular disease risk 2Vitamin E intake critical during 'the first 1,000 days' 2Vitamin E intake critical during 'the first 1,000 days' 3Global Fingerprint Lock Industry Report 2014 2
... method to identify the "DNA-binding transcription factors" that help steer ... ultimately make up all the organs and parts of ... mouse embryonic spinal cord as a model, and will be ... Sciences, a professional journal. , The research is an ...
... the brain improves recovery from stroke when injected up to ... be used as an effective stroke drug. A study in ... shows that an injection of Granulocyte-Colony Stimulating Factor (G-CSF), whose ... neurons and counteract neurone death, reduces the size of the ...
... deadly food, air and water pathogens may get a lot ... State University researcher and his team. , Syed Hashsham, ... Engineering and the Center for Microbial Ecology, is developing a ... threat agents in air, water and food. , ...
Cached Biology News:Advance helps explain stem cell behavior 2Advance helps explain stem cell behavior 3Brain protein improves stroke symptoms in rats, even when injected after 3 days 2Professors to develop hand-held pathogen testing device 2
(Date:9/15/2014)... of fibers made of carbon nanotubes is neat, but Rice ... single-walled carbon nanotubes in new fibers created at Rice line ... designed by chemist Angel Mart and his colleagues. , The ... this month in the journal ACS Nano , is ... into a fiber. , Left to their own devices, carbon ...
(Date:9/15/2014)... Sept. 15, 2014  iVinci Health LLC, the company ... Revenue Management system, branded as VisitPay®, has successfully closed ... the launch of a new extension to VisitPay® – ... easy and convenient way for patients to manage their ... by them and their families. The new ...
(Date:9/15/2014)... 2014 Die zweite jährliche International ... bis 18. Oktober stattfinden. Die IPAW ist eine ... (PPTA) und ihrer Mitgliedsunternehmen und ... Bewusstsein für die Gewinnung von Quellplasma zu steigern ... und Verbessern von Leben zu würdigen , ...
(Date:9/15/2014)... September 15, 2014 Hydro Dynamics, ... announced today that it will be partnering with ... ( http://www.proteaf.com ) for implementing its Shock Wave ... continuous processing. Continuous flow chemistry through process ... pharmaceutical and petrochemical markets for decades. The ...
Breaking Biology Technology:Rice rolls 'neat' nanotube fibers 2Rice rolls 'neat' nanotube fibers 3iVinci Health Raises $5M to Fuel National Expansion, Announces Launch of Personal Finance Portal for Healthcare 2iVinci Health Raises $5M to Fuel National Expansion, Announces Launch of Personal Finance Portal for Healthcare 3International Plasma Awareness Week feiert Spender und rückt seltene Krankheiten in den Mittelpunkt 2International Plasma Awareness Week feiert Spender und rückt seltene Krankheiten in den Mittelpunkt 3Hydro Dynamics Partners with the Continuous Flow Chemistry Experts of Proteaf Technologies 2
... Research Group predicts the Alzheimer's disease drug ... will grow by 15 percent annually for the ... Millennium's study, entitled "Global Markets for Alzheimer's Disease ... marquee names in an Alzheimer's drug market that ...
... that, just ask Division 1 college football coaches whose teams ... ,When it comes to ranking which cities, states and ... game may be a bit more scientific, but there are ... educated opinions of a relative handful of people, most of ...
... plans to extend its network into central Illinois ... operates 3,800 miles of network connections already and will ... expansion plans cover Peoria, Bloomington, Champaign and Danville. , ... access to clients with network services. The firm says ...
Cached Biology Technology:Alzheimer's drug market to hit $5.5 billion by 2009, study says 2Wisconsin fares well in the economic rankings game – most of the time 2Wisconsin fares well in the economic rankings game – most of the time 3
... for Optimal Microdissection , CapSure HS and ... and rapid extraction of populations of pure ... with Laser Capture Microdissection., Ensure the ... Analysis , All CapSure LCM Caps have ...
... , CapSure HS and CapSure Macro LCM ... of populations of pure cells from tissue ... Microdissection., Ensure the Integrity of Microdissected ... CapSure LCM Caps have a patented transfer ...
... detector is an optical unit that can ... or Dyad Disciple gradient-capable thermal cycler (purchased ... photonics shuttle that contains four LEDs for ... nm, 620-650 nm) and two filtered photodiodes ...
... Capture Microdissection (LCM) is the method of ... Microdissection is the only instrument to offer ... flexibility., UV Laser Cutting ... non-soft tissues and capturing large numbers of ...
Biology Products: