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:4/5/2017)... April 5, 2017  The Allen Institute for Cell ... Explorer: a one-of-a-kind portal and dynamic digital window into ... data, the first application of deep learning to create ... cell lines and a growing suite of powerful tools. ... these and future publicly available resources created and shared ...
(Date:4/5/2017)... KEY FINDINGS The global market ... CAGR of 25.76% during the forecast period of 2017-2025. ... for the growth of the stem cell market. ... MARKET INSIGHTS The global stem cell market is segmented ... The stem cell market of the product is segmented ...
(Date:4/3/2017)... April 3, 2017  Data captured by ... platform, detected a statistically significant association between ... to treatment and objective response of cancer ... to predict whether cancer patients will respond ... as well as to improve both pre-infusion potency ...
Breaking Biology News(10 mins):
(Date:4/20/2017)... Dutch philosopher Koert van Mensvoort - founder of the Next ... in Eindhoven - has written a ,Letter to Humanity, in support ... avoid becoming a slave and victim to its own technology, but to employ ... ... van Mensvoort – founder of the Next Nature Network and Fellow of ‘Next ...
(Date:4/20/2017)... 20, 2017 For today, Stock-Callers.com redirects ... drug development and clinical research aimed at treating diseases and ... BSTG), Keryx Biopharmaceuticals Inc. (NASDAQ: KERX), Kite Pharma Inc. (NASDAQ: ... You can access our complimentary research reports on these stocks ... http://stock-callers.com/registration ...
(Date:4/19/2017)... ... April 18, 2017 , ... A number of new instruments have ... is part of the Protein and Cell Analysis Education Webinar Series , will ... technology fits in current and future applications. , Many flow cytometers have unique ...
(Date:4/19/2017)... , ... April 18, 2017 , ... ... Halo Labs . The move comes after the company changed focus to making ... our new brand and our new technology,” says CEO Robert Hart. Founders Bernardo ...
Breaking Biology Technology: