Bifidobacterium

Bifidobacterium
A genus of anaerobic bacteria (family Actinomycetaceae) containing Gram-positive rods of highly variable appearance; freshly isolated strains characteristically show true and false branching, with bifurcated V and Y forms, uniform or branched, and club or spatulate forms. They frequently stain irregularly; two or more granules may stain with methylene blue, while the remainder of the cell is unstained. They are not acid fast, are nonmotile, and do not produce spores; acetic and lactic acid s are produced from glucose. Pathogenicity for humans is rare, although they have been found in the feces and alimentary tract of infants, older people, and animals. The type species is B. bifidum. [L. bifidus, cleft in two parts, + bacterium]
- B. bifidum type species of the genus B.; it is found in the feces and alimentary tract of breast- and bottle-fed infants and of older persons, rats, turkeys, and chickens; also found in the rumen of cattle; pathogenicity for humans and other animals is rare. Associated with a growth factor belonging to a group of N-containing polysaccharides with a high hexosamine content and known as bifidus factor.
- B. dentium a bacterial species recovered in association with dental caries and periodontal disease. It is also an opportunistic pathogen, recovered in mixed infections associated with abscess formation.

* * *

Bi·fid·o·bac·te·ri·um (bi″fid-o-bak-tērґe-əm) [bifidus + bacterium] a genus of gram-positive, anaerobic bacteria of the family Bifidobacteriaceae, occurring as irregularly staining rods of bifurcated Y and V forms and club or spatulate shapes.

Medical dictionary. 2011.

Игры ⚽ Нужен реферат?

Look at other dictionaries:

  • Bifidobacterium — Bifidobacterium …   Wikipédia en Français

  • Bifidobacterium — adolescentis nach Gram gefärbt, lichtmikroskopisch Systematik Domäne: Bakterien …   Deutsch Wikipedia

  • Bifidobacterium — Bifidobacterium …   Wikipédia en Français

  • Bifidobacterium — Taxobox color = lightgrey name = Bifidobacterium image width = 270px image caption = Bifidobacterium adolescentis regnum = Bacteria phylum = Actinobacteria classis = Actinobacteria subclassis = Actinobacteridae ordo = Bifidobacteriales familia =… …   Wikipedia

  • Bifidobacterium —   Bifidobacterium …   Wikipedia Español

  • Bifidobacterium Bifidum — Bifidobacterium bifidum …   Wikipédia en Français

  • Bifidobacterium bifidus — Bifidobacterium bifidum Bifidobacterium bifidum …   Wikipédia en Français

  • Bifidobacterium dentium — is a species of bacteria in the genus of Bifidobacterium, branched anaerobic bacteria from the Bifidobacteriaceae family. dentium is a source of anaerobic infections, and is also tracked in polluted water to trace the source of fecal… …   Wikipedia

  • Bifidobacterium breve — est une bactérie anaérobie, de type actinobactérie, qui colonisent principalement le gros intestin du nourrisson. Portail de la microbiologie Catégorie : Eurybacteria …   Wikipédia en Français

  • Bifidobacterium animalis — Taxobox name = Bifidobacterium animalis image width = image caption = regnum = Bacteria divisio = Firmicutes classis = Actinobacteria ordo = Bifidobacteriales familia = Bifidobacteriaceae genus = Bifidobacterium species = B. animalis binomial =… …   Wikipedia

  • Bifidobacterium bifidum — Bifidobacterium bifidum …   Wikipédia en Français

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”