Navigation Links
Biological links found between childhood abuse and adolescent depression
Date:4/20/2011

Queen's University professor Kate Harkness has found that a history of physical, sexual or emotional abuse in childhood substantially increases the risk of depression in adolescence by altering a person's neuroendocrine response to stress.

Adolescents with a history of maltreatment and a mild level of depression were found to release much more of the stress hormone cortisol than is normal in response to psychological stressors such as giving a speech or solving a difficult arithmetic test.

"This kind of reaction is a problem because cortisol kills cells in areas of the brain that control memory and emotion regulation," explains Dr. Harkness, a professor in the Department of Psychology and an expert in the role of stress and trauma in adolescent depression. "Over time cortisol levels can build up and increase a person's risk for more severe endocrine impairment and more severe depression."

At severe levels of depression, Dr. Harkness' team saw that the youths with a history of maltreatment had a total blunting of the endocrine response to stress. These findings suggest that the normal operation of the stress response system can breakdown in severely depressed adolescents.

These results are important because they show that environmental stress in childhood changes the function of the brain in ways that may cause and/or maintain severe psychiatric disorders such as depression.

Dr. Harkness recently presented her findings at the International Society for Affective Disorders Conference in Toronto. The research was funded by the Ontario Mental Health Foundation and conducted in collaboration with Queen's researcher Jeremy Stuart and Kathy Wynne-Edwards from the University of Calgary.


'/>"/>

Contact: Christina Archibald
christina.archibald@queensu.ca
613-533-2877
Queen's University
Source:Eurekalert

Page: 1

Related medicine news :

1. Study carried out into biological risks of eating reptiles
2. Biological clock could be a key to better health, longer life
3. New method to grow arteries could lead to biological bypass for heart disease
4. U of T researchers crack splicing code, solve a mystery underlying biological complexity
5. Adolescent brains biologically wired to engage in risky behavior, study finds
6. Length of biological marker associated with risk of cancer
7. Ticking biological clock increases womens libido, new research shows
8. Researchers uncover biological rationale for why intensive lupus treatment works
9. Multifunctional nanoparticle enables new type of biological imaging
10. Biological changes in suicidal patients
11. University of Utah and Harvard researchers take major step toward first biological test for autism
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/29/2017)... ... March 29, 2017 , ... ... FASTBRACES® in Carnegie, OK, from Dr. Jamie Cameron, with or without a ... compared to traditional orthodontic treatment. Depending on each patient’s case, treatment with the ...
(Date:3/29/2017)... Mich. (PRWEB) , ... March ... ... and Manufacturer Alliance (GRMA) is growing as it continues developing an ANSI-approved, ... supplement industry. The organization, which plans to publish the first ANSI-approved GMP ...
(Date:3/29/2017)... ... March 29, 2017 , ... ... documenting and diagramming network and data center assets and audio-video devices has recently ... request new equipment shapes for free and download shapes and stencils from ...
(Date:3/29/2017)... ... March 29, 2017 , ... An inventor from Raynham, ... bands used in conjunction with my braces always rubbed against the inside of ... to prevent this problem." The O.B.S. was the result of his brainstorming. , ...
(Date:3/29/2017)... ... March 29, 2017 , ... The assembly of ... protocols involve many repetitive steps and often scientists require many different versions of ... needed, and results in a lower error rate and cost saving for reagents ...
Breaking Medicine News(10 mins):
(Date:3/29/2017)... , March 29, 2017  NuVasive, Inc. ... on transforming spine surgery with minimally disruptive, procedurally-integrated ... (FDA) 510(k) clearance of the CoRoent® Small Interbody™ ... contiguous levels in the cervical spine. This marks ... to be used at up to four contiguous ...
(Date:3/29/2017)... SILVER SPRING, Md. , March 29, 2017 On ... Ocrevus (ocrelizumab) to treat adult patients with relapsing forms ... (PPMS). This is the first drug approved by the ... by a health care professional.  "Multiple ... life," said Billy Dunn , M.D., director of ...
(Date:3/29/2017)... , March 29, 2017 ... Sectra (STO: SECT B) announces that ... install Sectra PACS in their healthcare enterprise. The ... Epic EMR, will enable access and sharing of ... Additionally, UPHS and Sectra will enter into a ...
Breaking Medicine Technology: