Streptococcus faecium M 74 in control of diarrhoea induced by a human enterotoxigenic Escherichia coli strain in an infant rabbit model.
Streptococcus faecium strain M 74 was evaluated as a prophylacticum for enterotoxigenic Escherichia coli (ETEC) diarrhoea with human isolates of E. coli with CFA/I and CFA/II surface fimbrial haemagglutinins (adhesins) in a rabbit model. Young rabbits (3 to 4 days old) were given S. faecium organisms (5 X 10(9)) 15 min before (group A), 6 h before (group B) and 12 h after (group C) challenge with ETEC organisms. Only 4 out of 26 rabbits in group A, 6 out of 21 in group B and 7 out of 23 in group C developed diarrhoea. In conclusion, this S. faecium strain M 74 seems efficiently to protect animals from ETEC diarrhoea when given as a prophylactic agent at a high dose. This animal model seems useful for comparative studies on new preventive methods for ETEC diarrhoea such as testing probiotics and antiadhesive drugs.
D018830:Adhesins, Escherichia coli; D000818:Animals; D000898:Antibiosis; D001426:Bacterial Proteins / Q000096:biosynthesis; D001427:Bacterial Toxins / Q000096:biosynthesis; D006224:Cricetinae; D003967:Diarrhea / Q000517:prevention & control*; D004195:Disease Models, Animal; D004768:Enterotoxins / Q000096:biosynthesis; D004926:Escherichia coli / Q000254:growth & development / Q000378:metabolism; D004927:Escherichia coli Infections / Q000517:prevention & control*; D029968:Escherichia coli Proteins; D006801:Humans; D051379:Mice; D011817:Rabbits; D013291:Streptococcus / Q000254:growth & development / Q000276:immunology*
D018830:Adhesins, Escherichia coli; D001426:Bacterial Proteins; D001427:Bacterial Toxins; D004768:Enterotoxins; D029968:Escherichia coli Proteins; C034151:heat stable toxin (E coli); C027538:heat-labile enterotoxin, E coli