Featured Research

from universities, journals, and other organizations

Exam Nerves Affects Students' Immune Defense

Date:
August 18, 2006
Source:
Karolinska Institutet
Summary:
It is hardly surprising that one of the medical programs most important exams is stressful for students. However, research now shows that this mental stress also affects the students' immune defense systems, particularly amongst those suffering from allergies.

It is hardly surprising that one of the medical programmes most important exams is stressful for students. However, research now shows that this mental stress also affects the students immune defence systems, particularly amongst those suffering from allergies.

Related Articles


While diseases like asthma and allergies are becoming increasingly common in the West, many people believe that we are living ever stressful lives. A new study from Karolinska Institutet backs up what many people have suspected: that there are important links between mental stress and the complex physical inflammation reactions characteristic of allergies.

In order to understand the link between stress and allergy, the scientists have examined how a major medical exam at Karolinska Institutet affects feelings of stress, stress hormone levels, the immune system and lung function amongst students with and without allergies. The extensive tests were made on two occasions, first with the students during a calm period of study with no exam in sight, and then shortly before a major exam. Twenty two students with hayfever and/or asthma and 19 healthy students took part.

For the first time on record, scientists were able to show that a group of cells that are central to the human immune system known as regulatory T cells appear to increase sharply in number in response to mental stress. A regulatory T cell is a kind of white blood cell that controls the activity of a number of other types of immune cell. This increase was observed in both groups of students.

The study also showed that blood concentrations of a group of inflammation products called cytokines had changed and shifted against a pattern associated with allergic inflammation in the allergic students, but remained normal in the healthy students.

According to Mats Lekander, who is leading the research group, the two discoveries might very well be linked.

"There is much to suggest that the regulatory T cells are dysfunctional in people with allergies," he says. "When people become stressed, they increase in number and normally have an anti-inflammatory effect. If this system does not work in people with allergies, it could explain the changed cytokine balance that we have observed in them."

Publication: "Changes in immune regulation in response to examination stress in atopic and healthy individuals." Höglund, C. Olgart, Axén, J., Kemi, C., Jernelöv, S., Grunewald, J., Müller-Suur, C., Smith, Y., Grönneberg, R., Eklund, A., Stierna, P. & Lekander, M. Clinical & Experimental Allergy 36 (8), 982-992


Story Source:

The above story is based on materials provided by Karolinska Institutet. Note: Materials may be edited for content and length.


Cite This Page:

Karolinska Institutet. "Exam Nerves Affects Students' Immune Defense." ScienceDaily. ScienceDaily, 18 August 2006. <www.sciencedaily.com/releases/2006/08/060818174125.htm>.
Karolinska Institutet. (2006, August 18). Exam Nerves Affects Students' Immune Defense. ScienceDaily. Retrieved October 25, 2014 from www.sciencedaily.com/releases/2006/08/060818174125.htm
Karolinska Institutet. "Exam Nerves Affects Students' Immune Defense." ScienceDaily. www.sciencedaily.com/releases/2006/08/060818174125.htm (accessed October 25, 2014).

Share This



More Health & Medicine News

Saturday, October 25, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

IKEA Desk Converts From Standing to Sitting With One Button

IKEA Desk Converts From Standing to Sitting With One Button

Buzz60 (Oct. 24, 2014) — IKEA is out with a new convertible desk that can convert from a sitting desk to a standing one with just the push of a button. Jen Markham explains. Video provided by Buzz60
Powered by NewsLook.com
Ebola Protective Suits Being Made in China

Ebola Protective Suits Being Made in China

AFP (Oct. 24, 2014) — A factory in China is busy making Ebola protective suits for healthcare workers and others fighting the spread of the virus. Duration: 00:38 Video provided by AFP
Powered by NewsLook.com
WHO: Millions of Ebola Vaccine Doses by 2015

WHO: Millions of Ebola Vaccine Doses by 2015

AP (Oct. 24, 2014) — The World Health Organization said on Friday that millions of doses of two experimental Ebola vaccines could be ready for use in 2015 and five more experimental vaccines would start being tested in March. (Oct. 24) Video provided by AP
Powered by NewsLook.com
Doctor in NYC Quarantined With Ebola

Doctor in NYC Quarantined With Ebola

AP (Oct. 24, 2014) — An emergency room doctor who recently returned to the city after treating Ebola patients in West Africa has tested positive for the virus. He's quarantined in a hospital. (Oct. 24) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:

Strange & Offbeat Stories

 

Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins