Navigation Links
Bullying by childhood peers leaves a trace that can change the expression of a gene linked to mood
Date:12/17/2012

This press release is available in French.

A recent study by a researcher at the Centre for Studies on Human Stress (CSHS) at the Hpital Louis-H. Lafontaine and professor at the Universit de Montral suggests that bullying by peers changes the structure surrounding a gene involved in regulating mood, making victims more vulnerable to mental health problems as they age.

The study published in the journal Psychological Medicine seeks to better understand the mechanisms that explain how difficult experiences disrupt our response to stressful situations. "Many people think that our genes are immutable; however this study suggests that environment, even the social environment, can affect their functioning. This is particularly the case for victimization experiences in childhood, which change not only our stress response but also the functioning of genes involved in mood regulation," says Isabelle Ouellet-Morin, lead author of the study.

A previous study by Ouellet-Morin, conducted at the Institute of Psychiatry in London (UK), showed that bullied children secrete less cortisolthe stress hormonebut had more problems with social interaction and aggressive behaviour. The present study indicates that the reduction of cortisol, which occurs around the age of 12, is preceded two years earlier by a change in the structure surrounding a gene (SERT) that regulates serotonin, a neurotransmitter involved in mood regulation and depression.

To achieve these results, 28 pairs of identical twins with a mean age of 10 years were analyzed separately according to their experiences of bullying by peers: one twin had been bullied at school while the other had not. "Since they were identical twins living in the same conditions, changes in the chemical structure surrounding the gene cannot be explained by genetics or family environment. Our results suggest that victimization experiences are the source of these changes," says Ouellet-Morin. According to the author, it would now be worthwhile to evaluate the possibility of reversing these psychological effects, in particular, through interventions at school and support for victims.


'/>"/>

Contact: William Raillant-Clark
w.raillant-clark@umontreal.ca
514-343-7593
University of Montreal
Source:Eurekalert

Related biology news :

1. Studies reveal structure of EV71, a virus causing childhood illnesses
2. How many calories does it take to reach childhood obesity prevention goals?
3. Zip code as important as genetic code in childhood obesity
4. Prenatal exposure to air pollution linked to childhood obesity
5. Washington University receives $8 million to lead international childhood malnutrition effort
6. Folic acid food enrichment potentially protective against childhood cancers
7. Leading childhood asthma group supports federal asthma action plan to reduce disparities
8. Childhood virus infection linked to prolonged seizures with fever
9. Highlighting molecular clues to the link between childhood maltreatment and later suicide
10. Key mutations discovered for most common childhood brain cancer
11. To understand childhood obesity, researchers look to inactive, fat rats
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/21/2016)... , June 21, 2016 NuData Security announced ... new role of principal product architect and that ... director of customer development. Both will report directly ... officer. The moves reflect NuData,s strategic growth in ... to high customer demand and customer focus values. ...
(Date:6/9/2016)... , June 9, 2016  Perkotek an innovation leader in attendance control systems is ... log work hours, for employers to make sure the right employees are actually signing ... http://photos.prnewswire.com/prnh/20160609/377486LOGO ... ... ...
(Date:6/2/2016)... The Department of Transport Management (DOTM) of ... project, for the , Supply and Delivery of ... Infrastructure , to Decatur , ... Management Solutions. Numerous renowned international vendors participated in the tendering ... selected for the most compliant and innovative solution. The contract ...
Breaking Biology News(10 mins):
(Date:6/27/2016)... 27, 2016  Global demand for enzymes is ... 2020 to $7.2 billion.  This market includes enzymes ... products, biofuel production, animal feed, and other markets) ... biocatalysts). Food and beverages will remain the largest ... consumption of products containing enzymes in developing regions.  ...
(Date:6/27/2016)... ... 2016 , ... Parallel 6 , the leading software as a service ... Virtual Patient Encounter CONSULT module which enables both audio and video telemedicine communication ... , Using the CONSULT module, patients and physicians can schedule a face to face ...
(Date:6/27/2016)... BOSTON , June 27, 2016   Ginkgo ... biology to industrial engineering, was today awarded as ... a selection of the world,s most innovative companies. ... at scale for the real world in the ... organism engineers work directly with customers including Fortune ...
(Date:6/24/2016)... ... June 24, 2016 , ... Researchers at the Universita Politecnica delle ... people with peritoneal or pleural mesothelioma. Their findings are the subject of a new ... , Diagnostic biomarkers are signposts in the blood, lung fluid or tissue of mesothelioma ...
Breaking Biology Technology: