Blautia obeum

{{Short description|Species of bacterium}}

{{more citations needed|date=June 2016}}

{{Speciesbox

| genus = Blautia

| species = obeum

| authority = (Moore et al. 1976) Lawson and Finegold 2015Page Species: Blautia obeum on {{cite web | url=https://lpsn.dsmz.de/species/blautia-obeum | title=LPSN - List of Prokaryotic names with Standing in Nomenclature | publisher=Deutsche Sammlung von Mikroorganismen und Zellkulturen | access-date=2022-08-23}}

| synonyms = Ruminococcus obeum

}}

Blautia obeum is a species of anaerobic, gram-positive bacteria found in the gut.{{cite journal|doi=10.1099/ijs.0.000015|pmid=25481290|title=Reclassification of Ruminococcus obeum as Blautia obeum comb. Nov|journal=International Journal of Systematic and Evolutionary Microbiology|volume=65|issue=Pt 3|pages=789–93|year=2014|last1=Lawson|first1=P. A.|last2=Finegold|first2=S. M.|doi-access=free}}

It has been shown that B. obeum along with other relevant taxa play an important role both in the recovery process from Vibrio cholerae infection and microbiota maturation in children. Moreover, experiments in model mice show that B. obeum strain AI-2 reduces the pathogenicity of V. cholerae. The data show that the expression of quorum sensing autoinducers by B. obeum is increased in V. cholera infections and they repress the expression of several V. cholera virulence factors.{{citation needed|date=June 2016}}{{cite journal|last1=Hsiao|first1=Ansel|last2=Shamsir Ahmed|first2=A.M.|last3=Subramanian|first3=Sathish|last4=Griffin|first4=Nicholas W.|last5=Drewry|first5=Lisa L.|last6=Petri|first6=William A.|last7=Haque|first7=Rashidul|last8=Ahmed|first8=Tahmeed|last9=Gordon|first9=Jeffrey I.|title=Members of the human gut microbiota involved in recovery from Vibrio cholerae infection|journal=Nature|date=20 November 2014|volume=515|issue=7527|pages=423–426|doi=10.1038/nature13738|issn=0028-0836|pmid=25231861|pmc=4353411|bibcode=2014Natur.515..423H}}