Some more Mechanism of Action

E. coli strain Nissle 1917 forms short-chain fatty acids from fiber substances

EcN is to a greater extent capable of forming short-chain fatty acids (formic, acetic, propionic, and butyric acid) from fiber substances. Acetic acid is predominant among these acids. It stimulates the ring musculature of the colon and promotes the blood circulation of the mucosa. Acetic acid consequently has a stimulating effect on intestinal motility. 30 The ­efficacy of EcN, for example, in cases of chronic obsti­pation seems to be based on this action. In addition, the bacterial fermentation products, particularly butyric acid, are very energy-rich and indispensable to metabolism in the epithelium of the colon.

Defensins strengthen the body's innate immune defenses

Defensins are the body's own antimicrobial peptides which are produced, for example, in the intestinal epithelium. They are part of the non-specific innate immune system and protect the body against a large number of pathogenic microorganisms. EcN induces­ the formation of human β-defensin-2 (HBD-2) in intestinal epithelium cells and thus strengthens the body's defense capacity. 13; 24

E. coli strain Nissle 1917 protects against infections

EcN enhances the in-vitro cytotoxicity of isolated murine macrophages against Leishmania donovani. This speaks in favor of a reinforcement of the defense against intracellular parasites. 33
In animal studies, the oral administration of EcN was shown to protect against systemic infections with Candida albicans and Listeria monocytogenes. In animals infected with Candida albicans, a drastic ­reduction of the microbial contamination of the main target organ, i. e. the kidney, was achieved. A comparable effect was observed in the livers and spleens of animals infected with L. monocytogenes. 344

The healthy gut microbiota prevents against atopic diseases

The microbiota of the gut has an influence on the immune reactions regulated by TH1-lymphocytes and TH2-lymphocytes. A disturbed balance among the various helper-T-cells subsets appears to be ­responsible for the increased occurrence of atopic diseases. 8 Immunological studies dealing with the colonization of EcN in newborns have shown that the development of the infant's immune system is stimulated. 35 This may also be coupled with a reduction of the risk of developing an allergy.

8) Rasche C et al. Differential immunomodulating effects of inactivated ­probiotic bacteria on the allergic immune response. Acta Derm Venereol 2007; 87: 305–311.

13) Schlee M et al. Induction of human beta-defensin 2 by the probiotic Escherichia coli ­Nissle 1917 is mediated through flagellin.Infect Immun 2007; 75(5): 2399–2407.

24) Wehkamp J et al. NF-kappaB- and AP-1-mediated induction of human beta defensin-2 in intestinal epithelial cells by Escherichia coli Nissle 1917: a novel effect of a probiotic bacterium. Infect Immun 2004; 72(10): 5750–5758.

30) Bär F et al. Cell-free supernatants of Escherichia coli Nissle 1917 modulate human ­colonic motility: evidence from an in vitro organ bath study. Neurogastroenterol Motil 2009; 21: 559-e17.

33) Hockertz S. Immunmodulierende Wirkung von abgetöteten apathogenen Escherichia coli Stamm Nissle 1917, auf das Makrophagensystem. Arzneim-Forsch/Drug Res 1991;41:1108–1112.

34) Hockertz S. Steigerung der körpereigenen Abwehr gegen Bakterien- und Pilz­infektionen bei Mäusen nach Vorbehandlung mit dem apathogenen Escherichia coli-Stamm Nissle 1917. Arzneim.-Forsch./Drug Res. 1997;47(I)(6): 793–796.

35) Lodinová-Žádníková R et al. Local and serum antibody response in ­fullterm and prema­ture infants after artificial colonization of the intestine with E. coli strain Nissle 1917 (­Mutaflor). Pediatr Allergy Immunol 1992; 3: 43–48.

Mutaflor international package insert to download
Mutaflor Suspension international package insert to download