Veterinary bacteriology: information about important bacteria
|Etymology:||Genus name: a helix shaped rod. |
Species epithet: named after Konrad Heilmann, who first reported on a large case study of gastrospirilla infections in humans.
|Significance:||[Of minor importance]|
|Micromorphology:||The cell is a spiral with up to nine tightly coiled turns (3.0-6.5 x 0.6-0.7 µm). It has no periplasmatic flagella, but 4-10 bipolar flagella and is motile..|
|Gram +/Gram -:|
|Other Enzymes:||Urease +|
|Fermentation of carbohydrates:||Helicobacter spp. can neither ferment nor oxidize carbohydrates. Exception: H. pylori, which can oxidize glucose to acetate.|
|Disease:||H. heilmannii cause mild chronic gastritis but may also be associated with peptic ulceration in humans. Clinical signifacance in animals has not been proved, but can often be isolated from cats.
|Hosts:||Cat, dog, pig, primates and other carnivors.|
|16S rRNA Seq.:|
||About 35 species have been described within the genus Helicobacter, and this genus is most closely related to Campylobacter, Arcobacter and Sulfurospirillum.H. heilmannii is closely related to H. felis, H. bizzozerini and H. salomonis.|
|New names of bacterial phyla|
The taxonomic category phylum was previously not regulated by the International Code of Nomenclature of Prokaryotes (ICNP), but now this has changed and it was decided to revise the names of bacterial phyla. All phyla must be written in italics (which has been done on VetBact also before) and have the ending -ota.Published 2023-03-01. Read more...
|The taxonomy of chlamydias|
Species within the family Chlamydiaceae were previously divided into two genera Chlamydia and Chlamydophila. However, the differences between these two genera were not that great and many research groups have not accepted this division. Therefore, the genus Chlamydophila has been returned to the genus Chlamydia and this change has now been incorporated in VetBactPublished 2023-03-15. Read more...