''Alistipes'' is a
Gram-negative genus of
rod-shaped
A bacillus (), also called a bacilliform bacterium or often just a rod (when the context makes the sense clear), is a rod-shaped bacterium or archaeon. Bacilli are found in many different taxonomic groups of bacteria. However, the name ''Bacillu ...
anaerobic bacteria in the
phylum
In biology, a phylum (; plural: phyla) is a level of classification or taxonomic rank below kingdom and above class. Traditionally, in botany the term division has been used instead of phylum, although the International Code of Nomenclature f ...
Bacteroidota
The phylum Bacteroidota (synonym Bacteroidetes) is composed of three large classes of Gram-negative, nonsporeforming, anaerobic or aerobic, and rod-shaped bacteria that are widely distributed in the environment, including in soil, sediments, and ...
.
When members of this genus colonize the human
gastrointestinal (GI) tract, they provide protective effects against
colitis (intestinal inflammation),
autism
The autism spectrum, often referred to as just autism or in the context of a professional diagnosis autism spectrum disorder (ASD) or autism spectrum condition (ASC), is a neurodevelopmental condition (or conditions) characterized by difficulti ...
, and
cirrhosis (liver fibrosis). However, this genus can also cause
dysbiosis
Dysbiosis (also called dysbacteriosis) is characterized by a disruption to the microbiome resulting in an imbalance in the microbiota, changes in their functional composition and metabolic activities, or a shift in their local distribution. For ex ...
by contributing to
anxiety,
chronic fatigue syndrome
Chronic fatigue syndrome (CFS), also called myalgic encephalomyelitis (ME) or ME/CFS, is a complex, debilitating, long-term medical condition. The causes and mechanisms of the disease are not fully understood. Distinguishing core symptoms are ...
,
depression, and
hypertension
Hypertension (HTN or HT), also known as high blood pressure (HBP), is a long-term medical condition in which the blood pressure in the arteries is persistently elevated. High blood pressure usually does not cause symptoms. Long-term high bl ...
. Showcasing
priority effects in
microbiome assembly, when infant GI tracts have bacteria of the species ''Staphylococcus'' but not the species ''Faecalibacterium'', ''Alistipes'' species become less capable of colonization.
Etymology
''Alistipes'' is derived from the
New Latin noun ''alistipes'', meaning "the other stick", which is further derived from the
Latin adjective ''alius'' (other) and noun ''stipes'' (log/post).
Species
This genus has eleven validly published species, as per the
International Code of Nomenclature of Prokaryotes (ICNP):
[
* '' Alistipes communis'' Sakamoto et al. 2020]Alistipes finegoldii
''Alistipes finegoldii'' is a bacterium from the genus of '' Alistipes'' which has been isolated from appendix tissue from a human from Helsinki in Finland. The species is named in honor of Sydney M. Finegold Sydney "Sid" Martin Finegold (August ...
'' Rautio et al. 2003Alistipes hominis
''Alistipes'' is a Gram-negative genus of rod-shaped anaerobic bacteria in the phylum Bacteroidota. When members of this genus colonize the human gastrointestinal (GI) tract, they provide protective effects against colitis (intestinal infl ...
'' Liu et al. 2022
* '' Alistipes ihumii'' Pfleiderer et al. 2017
* '' Alistipes indistinctus'' Nagai et al. 2010
* '' Alistipes inops'' Shkoporov et al. 2015
* '' Alistipes onderdonkii'' Song et al. 2006
See also
* Bacterial taxonomy
* Microbiology
Microbiology () is the scientific study of microorganisms, those being unicellular (single cell), multicellular (cell colony), or acellular (lacking cells). Microbiology encompasses numerous sub-disciplines including virology, bacteriology, prot ...
References
Bacteria genera
Bacteroidia
{{Bacteroidetes-stub