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New bacteria to fight against intestinal inflammation
Date:11/6/2012

This protection is provided by a human protein, Elafin, which is artificially introduced into dairy produce bacteria (Lactococcus lactis and Lactobacillus casei). In time, this discovery could be useful for individuals suffering from chronic inflammatory diseases such as Crohn's disease or ulcerative colitis. The results of this research were published in the Science Translational Medicine review on 31 October 2012.

In France, nearly 200,000 individuals suffer from chronic inflammatory bowel disease, known as IBD, (specifically Crohn's disease and ulcerative colitis). The occurrence rate of this type of disease continues to rise (8,000 new cases diagnosed per year). During inflammatory outbreaks, IBDs are chiefly characterised by abdominal pain, frequent diarrhoea (sometimes with bleeding) or even disorders in the anal area (fissure, abscesses). These symptoms mean that taboos are associated with these diseases.

Different avenues are being explored to explain the origin of IBDs, including the role of genetic or environmental factors. The intestinal flora seems to play an important role in the outbreak of inflammation, although little is known about it. Identifying an effective treatment is also at the heart of the investigations.

Researchers are focussing on a human protein, known for its anti-inflammatory proprieties: Elafin. Although this protein is found naturally in the intestine to protect it against attacks, it disappears in patients suffering from IBDs.

Their hypothesis? Administering Elafin directly into the intestine could protect against inflammatory attacks and restore intestinal equilibrium and its functions.

Using non-pathogenic bacteria found naturally in the intestine and food, scientists from Inserm and Inra have designed modified bacteria to produce Elafin. To this end, the human Elafin gene, isolated in collaboration with a team from the Institut Pasteau, was introduced
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Contact: Press Office
presse@inserm.fr
INSERM (Institut national de la sant et de la recherche mdicale)
Source:Eurekalert

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