Bacteroides ovatusRANK: SpeciesTAXONOMY: Bacteroidetes/Chlorobi group -> Bacteroidetes -> Bacteroidia -> Bacteroidales -> Bacteroidaceae -> Bacteroides -> Bacteroides ovatus OVERVIEW: Bacteroides ovatus as the Predominant Commensal Intestinal Microbe Causing a Systemic Antibody Response in Inflammatory Bowel Disease. 'Our results therefore suggest that B. ovatus is so highly antigenic that it surpasses the anti-inflammatory regulation exerted by an IgA response and thus can cause an inflammatory IgG response too. On the other hand, B. vulgatus does not appear to be sufficiently pathogenic to induce an IgG response in addition to an IgA response.' [http://www.ncbi.nlm.nih.gov/pmc/articles/PMC119885/] Synonyms : Pseudobacterium ovatum, Pasteurella ovata, NCTC 11153, JCM 5824, DSM 1896, CIP 103756, CCUG 4943, CCRC 10623, Bacteroides fragilis subsp. ovatus, BCRC 10623, ATCC 8483Rank: species Direct sub-taxa of Bacteroides ovatus: Bacteroides ovatus 3725 D1 iv, Bacteroides ovatus 3725 D9 iii, Bacteroides ovatus 3_8_47FAA, Bacteroides ovatus ATCC 8483, Bacteroides ovatus CL02T12C04, Bacteroides ovatus CL03T12C18, Bacteroides ovatus SD CMC 3f Identified as constituent of vaginal microbiome. [PMID:23282177] In a study of gut bacteria of 15 patients with SARS-CoV-2 over the course of hospitalization, Bacteroides dorei, Bacteroides thetaiotaomicron, Bacteroides massiliensis, and Bacteroides ovatus, which downregulate expression of ACE2 in murine gut, correlated inversely with SARS-CoV-2 load in fecal samples from patients. [PMID: 32442562] [PMCID: PMC7237927] This species has been identified as a resident in the human gastrointestinal tract based on the phylogenetic framework of its small subunit ribosomal RNA gene sequences.[PMC 4262072]
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