Helicobacter

From Freepedia

? Helicobacter
Scientific classification
Kingdom: Bacteria Phylum: Proteobacteria Class: Epsilon Proteobacteria Order: Campylobacterales Family: Helicobacteraceae Genus: Helicobacter
Species
Helicobacter acinonychis Helicobacter aurati Helicobacter bilis Helicobacter bizzozeronii Helicobacter canadensis Helicobacter canis Helicobacter cholecystus Helicobacter cinaedi Helicobacter felis Helicobacter fennelliae Helicobacter ganmani Helicobacter hepaticus Helicobacter mesocricetorum Helicobacter muridarum Helicobacter mustelae Helicobacter pametensis Helicobacter pullorum Helicobacter pylori Helicobacter rodentium Helicobacter salomonis Helicobacter trogontum Helicobacter typhlonius

Helicobacter is a genus of Gram-negative bacteria that have a characteristic spiral shape and have been found in the lining of the stomach and in the liver of mammals and some birds. The best known species of this genus is Helicobacter pylori which infects humans and is responsible for most cases of peptic ulcer and chronic gastritis; it also serves as the type species of the genus.

Bacteria belonging to this genus are susceptible to standard antibiotics such as penicillin, are microaerophilic (require small amounts of oxygen), and are fast moving with multiple flagella.

Initially, these bacteria were considered to be members of the genus Campylobacter, but since 1989 they are grouped in their own genus (Goodwin 1989).

External links

• List of species in Helicobacter, with references
• List of species in Helicobacter, with links to sequence information

References

• GOODWIN (C.S.), ARMSTRONG (J.A.), CHILVERS (T.), PETERS (M.), COLLINS (M.D.), SLY (L.), McCONNELL (W.) and HARPER (W.E.S.): Transfer of Campylobacter pylori and Campylobacter mustelae to Helicobacter gen. nov. as Helicobacter pylori comb. nov. and Helicobacter mustelae comb. nov., respectively. Int. J. Syst. Bacteriol., 1989, 39, 397-405.
• VANDAMME (P.), FALSEN (E.), ROSSAU (R.), HOSTE (B.), SEGERS (P.), TYTGAT (R.) and DE LEY (J.): Revision of Campylobacter, Helicobacter, and Wolinella taxonomy: emendation of generic descriptions and proposal of Arcobacter gen. nov. Int. J. Syst. Bacteriol., 1991, 41, 88-103. PMID 1704793
• HUA Jie-Song, ZHENG Peng-Yuan, HO Bow: Species differentiation and identification in the genus of Helicobacter. World Journal of Gastroenterology. 1999 February; 5(1):7-9 Fulltext