title: [Intestinal beta-galactosidase in gnotobiotic animals following monoassociation with various E. coli strains].
abstract: Germ-free rats were monoassociated by E. coli germs not utilizing (L-) or utilizing lactose (L+) on endo-medium. There was no influence of germ status on the beta-galactosidase activity in the mucosa of the small and large intestine. With standard food, beta-galactosidase activity were to be measured in the chymus of all intestinal segments and in the faeces of germ-free as well as of monoassociated rats. In the chymus of caecum and colon and in the faeces of E. coli(L+)-animals, only, the short-time (12-16 days) application of lactose containing food resulted in an increase of the enzyme activity. Compared with the E. coli(L-)-animals, the lactose content in the chymus of all intestinal segments of this test group was decreased.
mesh_terms: D000818:Animals; D004926:Escherichia coli / Q000502:physiology*; D005260:Female; D005696:Galactosidases / Q000378:metabolism*; D005856:Germ-Free Life; D007413:Intestinal Mucosa / Q000201:enzymology*; D007420:Intestine, Large / Q000201:enzymology* / Q000382:microbiology; D007421:Intestine, Small / Q000201:enzymology* / Q000382:microbiology; D051381:Rats; D011919:Rats, Inbred Strains; D001616:beta-Galactosidase / Q000378:metabolism*
chemical_list: D005696:Galactosidases; D001616:beta-Galactosidase
vernacular_title: Intestinale beta-Galactosidase-Aktivität im gnotobiotischen Tier nachMonoassoziation mit verschiedenen E. coli-Stämmen.