Featured Research

from universities, journals, and other organizations

Natural birth may strengthen immune system, mouse study shows

Date:
July 10, 2014
Source:
University of Copenhagen – The Faculty of Health and Medical Sciences
Summary:
New knowledge about the immune system has been uncovered by a mouse study, which indicates that natural birth improves the immune system of the pups. Newborns delivered by natural birth are exposed to more bacteria from the mother. The newborn baby's immune system in this way learns to distinguish between its own harmless molecules and foreign molecules. In the experiment, pups delivered by Caesarean section showed a lower number of cells of a type that plays an important role in preventing reactive immune cells from responding to molecules from the body itself, from the diet and from harmless intestinal bacteria.

A number of studies suggest that children delivered by Caesarean section have a different intestinal flora than children delivered by natural birth. But it is still unknown why this is the case and what it means for the immune system. Researchers from the Faculty of Health and Medical Sciences therefore decided to scrutinise the impact of birth on the development of the immune system in a study of newborn mouse pups.

The study shows that pups delivered by Caesarean section had developed a lower number of cells that strengthen the immune system, says Camilla Hartmann Friis Hansen, Assistant Professor at the Department of Veterinary Disease Biology. The findings have recently been published in Journal of Immunology.

Mother's bacteria may be important

Newborns delivered by natural birth are exposed to more bacteria from the mother than those delivered by Caesarean section. According to a research hypothesis called the hygiene hypothesis, the newborn baby's immune system in this way learns to distinguish between its own harmless molecules and foreign molecules. In the experiment, pups delivered by Caesarean section showed a lower number of cells of a type that plays an important role in preventing reactive immune cells from responding to molecules from the body itself, from the diet and from harmless intestinal bacteria. Autoimmune diseases such as type 1 diabetes, Chrohn's disease and allergy are precisely characterised by an over-reaction by the immune system.

The researchers then looked for signs of development of type 1 diabetes in pups delivered by Caesarean section, but found none. The next step is therefore to study whether the pups are predisposed to other autoimmune diseases and then to test the theses in clinical trials.

The experiments on mice may give us an idea of what would be interesting to study in more detail in clinical trials, so that in the long term, we may be able to develop methods for strengthening the immune system in newborns who are predisposed to autoimmune diseases, says Professor Axel Kornerup Hansen, Department of Veterinary Disease Biology.


Story Source:

The above story is based on materials provided by University of Copenhagen – The Faculty of Health and Medical Sciences. Note: Materials may be edited for content and length.


Journal Reference:

  1. C. H. F. Hansen, L. S. F. Andersen, ukasz Krych, S. B. Metzdorff, J. P. Hasselby, S. Skov, D. S. Nielsen, K. Buschard, L. H. Hansen, A. K. Hansen. Mode of Delivery Shapes Gut Colonization Pattern and Modulates Regulatory Immunity in Mice. The Journal of Immunology, 2014; DOI: 10.4049/jimmunol.1400085

Cite This Page:

University of Copenhagen – The Faculty of Health and Medical Sciences. "Natural birth may strengthen immune system, mouse study shows." ScienceDaily. ScienceDaily, 10 July 2014. <www.sciencedaily.com/releases/2014/07/140710081440.htm>.
University of Copenhagen – The Faculty of Health and Medical Sciences. (2014, July 10). Natural birth may strengthen immune system, mouse study shows. ScienceDaily. Retrieved September 30, 2014 from www.sciencedaily.com/releases/2014/07/140710081440.htm
University of Copenhagen – The Faculty of Health and Medical Sciences. "Natural birth may strengthen immune system, mouse study shows." ScienceDaily. www.sciencedaily.com/releases/2014/07/140710081440.htm (accessed September 30, 2014).

Share This



More Health & Medicine News

Tuesday, September 30, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Some Positive Ebola News: Outbreak 'Contained' In Nigeria

Some Positive Ebola News: Outbreak 'Contained' In Nigeria

Newsy (Sep. 30, 2014) The CDC says a new case of Ebola has not been reported in Nigeria for more than 21 days, leading to hopes the outbreak might be nearing its end. Video provided by Newsy
Powered by NewsLook.com
UN Ebola Mission Head: Immediate Action Is Crucial

UN Ebola Mission Head: Immediate Action Is Crucial

AFP (Sep. 30, 2014) The newly appointed head of the United Nations Mission for Ebola Emergency Response (UNMEER), Anthony Banbury, outlines operations to tackle the virus. Duration: 00:39 Video provided by AFP
Powered by NewsLook.com
CDC Confirms First Case of Ebola in US

CDC Confirms First Case of Ebola in US

AP (Sep. 30, 2014) The CDC has confirmed the first diagnosed case of Ebola in the United States. The patient is being treated at a Dallas hospital after traveling earlier this month from Liberia. (Sept. 30) Video provided by AP
Powered by NewsLook.com
New Breast Cancer Drug Extends Lives In Clinical Trial

New Breast Cancer Drug Extends Lives In Clinical Trial

Newsy (Sep. 30, 2014) In a clinical trial, breast cancer patients lived an average of 15 months longer when they received new drug Perjeta along with Herceptin. Video provided by Newsy
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