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Type 1 diabetes: Gut microbiota networks may influence autoimmune processes

Date:
March 12, 2014
Source:
Helmholtz Zentrum Muenchen - German Research Centre for Environmental Health
Summary:
The interactions of the gut microbiota in children with typical diabetes autoantibodies differ from that in healthy children. The fact that these differences already exist before antibodies are detectable in the blood adds to the growing evidence that microbial DNA, the so-called microbiome, may be involved in the development of autoimmune processes.

The interactions of the gut microbiota in children with typical diabetes autoantibodies differ from that in healthy children. The fact that these differences already exist before antibodies are detectable in the blood adds to the growing evidence that microbial DNA, the so-called microbiome, may be involved in the development of autoimmune processes. Scientists from the Helmholtz Zentrum Mόnchen have published their findings in the specialist journal Diabetes.

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As part of the BABYDIET study, the scientists compared the composition and interaction of the gut microbiota in children who went on to develop diabetes-specific autoantibodies in their blood with data from children who were autoantibody negative. The BABYDIET study examines the nutritional factors that may influence the risk of diabetes.

Similar bacteria -- different interactions

In the course of the study, the team headed by PD Dr. Peter Achenbach and Professor Anette-Gabriele Ziegler from the Institute of Diabetes Research as well as Dr. David Endesfelder and Dr. Wolfgang zu Castell from the Scientific Computing Research Unit at the Helmholtz Zentrum Mόnchen, ascertained that the diversity and number of bacteria present in the gut were similar in both collectives. However, bacterial interaction networks in the gut varied significantly in the two groups -- even in the first years of life, months or years before one group developed the typical diabetes autoantibodies.

Colonies of bacteria form what is known as the microbiome, and the genetic information contained within it influences the host organism. For some time, the microbiome has been associated with different diseases; the gut microbiome, in particular, is thought to play a role in the pathogenesis of metabolic diseases such as diabetes. The scientists' findings show that not only the microbial composition but also the way in which it interacts in functional communities could affect the body's immune system.

How is the microbiome influenced?

"A range of external factors such as diet, hygiene or even the birth delivery mode can influence both the composition of gut bacteria and the way in which the bacteria interact," explains Professor Ziegler, who heads the study. "If we are able to identify those parameters that tend to indicate more negative microbiome characteristics, we can develop new approaches to preventing autoimmune processes -- for example, in type 1 diabetes."


Story Source:

The above story is based on materials provided by Helmholtz Zentrum Muenchen - German Research Centre for Environmental Health. Note: Materials may be edited for content and length.


Journal Reference:

  1. Endesfelder, D. et al. Compromised gut microbiota networks in children with anti-islet cell autoimmunity, Diabetes. Diabetes, March 2014 DOI: 10.2337/db13-1676 1939-327X

Cite This Page:

Helmholtz Zentrum Muenchen - German Research Centre for Environmental Health. "Type 1 diabetes: Gut microbiota networks may influence autoimmune processes." ScienceDaily. ScienceDaily, 12 March 2014. <www.sciencedaily.com/releases/2014/03/140312082530.htm>.
Helmholtz Zentrum Muenchen - German Research Centre for Environmental Health. (2014, March 12). Type 1 diabetes: Gut microbiota networks may influence autoimmune processes. ScienceDaily. Retrieved November 24, 2014 from www.sciencedaily.com/releases/2014/03/140312082530.htm
Helmholtz Zentrum Muenchen - German Research Centre for Environmental Health. "Type 1 diabetes: Gut microbiota networks may influence autoimmune processes." ScienceDaily. www.sciencedaily.com/releases/2014/03/140312082530.htm (accessed November 24, 2014).

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