DNA fingerprinting methods, RAPD with 7 random primers, and rep-PCR using both BOXA1R and (GTG)(5) ones, were used for the discrimination of 16 type and collection Bifidobacterium strains of 9 species of human origin, B. animalis ssp. animalis and B. animalis ssp. lactis and 7 Bifidobacterium strains collected in the Culture Collection of Dairy Microorganisms (CCDM). Both RAPD and rep-PCR methods provided similar results. The strains were identified as B. animalis ssp. lactis (6 strains) and B. adolescentis (1 strain). The reclassification of the collection strain CCM 3761 as B. pseudocatenulatum species (previously classified as B. adolescentis) was confirmed.

• MeSH
• Bifidobacterium genetika   izolace a purifikace   klasifikace   MeSH
• DNA bakterií genetika   MeSH
• DNA fingerprinting metody   MeSH
• fylogeneze MeSH
• lidé MeSH
• polymerázová řetězová reakce metody   MeSH
• technika náhodné amplifikace polymorfní DNA metody   MeSH
• techniky typizace bakterií metody   MeSH
• zvířata MeSH
• Check Tag
• lidé MeSH
• zvířata MeSH

The aim of the study was to identify and characterize dog bifidobacterial isolates and compare them with commercial probiotic strains. Sixteen isolates of Bifidobacterium animalis ssp. lactis from dog faeces (German Shepherd Dog) were identified by subspecies-specific PCR, MALDI-TOF MS and sequencing. This study is the first describing B. animalis ssp. lactis occurring within the intestinal tract of dogs. Our dog isolates showed slightly different fingerprinting profiles obtained by RAPD-PCR and REP-PCR from those isolated from yogurt and type strains of B. animalis ssp. lactis. Both, dog and yogurt origin strains indicated survival in the simulated in vitro digestion assay and were resistant to low pH and bile salts. Moreover, strong auto-aggregation activity was observed only in dog origin B. animalis ssp. lactis strains. Dog strains showed good properties predicting their survival ability in GIT and could be tested as a potential new probiotics for dogs or other hosts.

• MeSH
• Bifidobacterium genetika   izolace a purifikace   MeSH
• DNA fingerprinting MeSH
• druhová specificita MeSH
• feces mikrobiologie   MeSH
• genetická variace MeSH
• probiotika MeSH
• psi MeSH
• střeva mikrobiologie   MeSH
• technika náhodné amplifikace polymorfní DNA MeSH
• zvířata MeSH
• Check Tag
• psi MeSH
• ženské pohlaví MeSH
• zvířata MeSH
• Publikační typ
• časopisecké články MeSH
• práce podpořená grantem MeSH