Ehrlichia

Ehrlichia
Systematics
Domain : Bacteria (bacteria) Department : Proteobacteria Class : Alpha Proteobacteria Order : Rickettsiales Family : Anaplasmataceae Genre : Ehrlichia
Scientific name
Ehrlichia
Moshkovski 1945 emend. Dumler et al. 2001
species
Ehrlichia canis (Donatien & Lestoquard 1935) Moshkovski 1945 Ehrlichia chaffensis Anderson et al. 1992 Ehrlichia ewingii Anderson et al. 1992 Ehrlichia muris Wen et al. 1995 Ehrlichia ruminantium (Cowdry 1925) Dumler et al. 2001

Ehrlichia is a genus of Gram- negative bacteria between 0.2 and up to 2 µm in size. They belong to the order of the Rickettsiales , with whose other representatives they share the obligate intracellular parasitic way of life. Their name was given to them in memory of the German microbiologist Paul Ehrlich .

Ehrlichia are known to cause animal diseases such as Ehrlichia in dogs ( Ehrlichia canis or Ehrlichia ewingii ), but they can also affect humans. The bacteria transmitted by ticks parasitize in monocytes or granulocytes . While such infections are usually barely noticed by those affected, in rare cases they can also cause very serious illnesses that manifest themselves clinically, such as Rocky Mountains spotted fever .

Systematics

The order Rickettsiales and thus also the genus Ehrlichia has seen some changes in recent years. The entire genus Ehrlichia was separated from the family Rickettsiaceae and added to Anaplasmataceae . Cowdria ruminatium was placed in this genus and is now a basionym for Ehrlichia ruminantium . Ehrlichia phagocytophila and Ehrlichia equi were summarized in the species Anaplasma phagocytophilum . Ehrlichia risticii was placed in the genus Neorickettsia and is therefore now a basionym for Neorickettsia risticii . Rickettsia sennetsu was assigned to Neorickettsia sennetsu (sometimes also listed as Ehrlichia sennetsu ).

Web links

Commons : Ehrlichia  - collection of images, videos and audio files

swell

System according to:

• Dumler (JS), Barbet (AF), Bekker (CPJ), Dasch (GA), Palmer (GH), Ray (SC), Rikihisa (Y.) and Rurangirwa (FR): Reorganization of genera in the families Rickettsiaceae and Anaplasmataceae in the order Rickettsiales: unification of some species of Ehrlichia with Anaplasma, Cowdria with Ehrlichia and Ehrlichia with Neorickettsia, description of six new species combinations and designation of Ehrlichia equi and 'HGE agent' as subjective synonyms of Ehrlichia phagocytophila. Int. J. Syst. Evol. Microbiol. 2001, 51, 2145-2165.
• LPSN: List of Prokaryotic Names with Standing in Nomenclature