title: Reduction of population levels of some indigenous bacteria by lactobacilli in the gastrointestinal tract of gnotobiotic rats.
abstract: Effects of each of three indigenous Lactobacillus groups on other bacterial populations were separately investigated in gnotobiotic rats. In the wall of the non-glandular part of the stomach, contents of the stomach and contents of the upper part of the small intestine, some pre-associated indigenous bacteria were reduced to conventional population levels by introducing three groups of lactobacilli: Group I (Lactobacillus acidophilus and related strains), Group II (L. fermentum) and the groups mixed. However, no obvious reduction in cell numbers of the pre-associated bacteria occurred in the case of Group III (L. murini).
mesh_terms: D000818:Animals; D000898:Antibiosis; D001419:Bacteria / Q000254:growth & development*; D001439:Bacteroides / Q000254:growth & development; D002432:Cecum / Q000382:microbiology; D004926:Escherichia coli / Q000254:growth & development; D005856:Germ-Free Life; D007421:Intestine, Small / Q000382:microbiology*; D007778:Lactobacillus / Q000502:physiology*; D051381:Rats; D013210:Staphylococcus / Q000254:growth & development; D013270:Stomach / Q000382:microbiology*; D013291:Streptococcus / Q000254:growth & development