Comparative phenotypic analysis of "Clostridium neonatale" and Clostridium butyricum isolates from neonates.
Anaerobe
; 48: 76-82, 2017 Dec.
Article
in En
| MEDLINE
| ID: mdl-28739338
ABSTRACT
"Clostridium neonatale" was recently described as a new species within the Cluster I of the Clostridium genus sensu stricto. In this study, we characterized "C. neonatale" isolates (n = 42) and compared their phenotypic properties with those of Clostridium butyricum (n = 26), a close related species. Strains isolated from fecal samples of healthy neonates were tested for different phenotypic characteristics. Compared to C. butyricum, "C. neonatale" showed a significant higher surface hydrophobicity (p = 0.0047), exopolysaccharide production (p = 0.0069), aero-tolerance (p = 0.0222) and viability at 30 °C (p = 0.0006). A lower swimming ability (p = 0.0146) and tolerance against bile (0.3%) (p = 0.0494), acid (pH 4.5) (p < 0.0001), osmolarity (NaCl 5%, p = 0.0188) and temperature at 50 °C (p = 0.0013) characterized "C. neonatale" strains. Our results showed that "C. neonatale" behaves very differently from C. butyricum and suggests specific responses to environmental changes. Besides it is the first study on clinical isolates for these two anaerobic members of the newborns' gut microbiota and broadens our knowledge about their phenotypic traits.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Clostridium butyricum
/
Gastrointestinal Microbiome
Limits:
Humans
/
Newborn
Language:
En
Journal:
Anaerobe
Year:
2017
Type:
Article
Affiliation country:
France