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A family of obligate anaerobic (microaerophilic species may occur), non-spore-forming bacteria (order Eubacteriales) containing gram-negative rods that vary in size from minute, filterable forms to long, filamentous, branching forms; pronounced pleomorphism may occur. Motile and nonmotile species occur; motile cells are peritrichous. Body fluids are frequently required for growth. Most species ferment carbohydrates, often with the production of acid; gas may be produced in glucose or peptone media. These organisms occur primarily in the lower intestinal tracts and mucous membranes of warm-blooded animals. They may be pathogenic. The type genus is Bacteroides.
Farlex Partner Medical Dictionary © Farlex 2012
References in periodicals archive ?
Results from this study support previous studies which reported large populations or Bacteroidetes (including the families Bacteroidaceae and Porphyromonadaceae) and Firmicutes (including the families Clostridiaceae and Lachn.ospiraceae) present within the digestive tract, as well as organisms from the phyla Proteobacteria (including the families Enterobacteriaceae and Aeromonadaceae) and Verrucomicrobia.
[36] and fibrosis) [down arrow] Prevotella in NASH [up arrow] Bacteroidaceae; [down arrow] Prevotellaceae and Erysipelotrichaceae according to the severity of NASH [up arrow] Bacteroides and Ruminococcus and [down arrow] Prevotella in patients with F2 fibrosis versus F0/F1 Raman et NAFLD and HC [up arrow] Lactobacillus and al.
Members of the Bacteroidaceae family have been demonstrated to be able to utilize a wide range of carbohydrates, including those that could form plant cell wall (cellulose, xylan, pectins, and [beta]-glucans and galactans), host mucopolysaccharides and glycoproteins [27].
Overall, patients with MS usually have gut dysbiosis and often reduced numbers of Faecalibacterium, Bacteroidaceae, and Prevotella.
Patients with MS can exhibit gut microbial dysbiosis, with increases in Methanobrevibacter Akkermansia [128], Desulfovibrionaceae [132], Actinobacteria, Bifidobacterium, Streptococcus [137], Firmicutes, Euryarchaeota [133], Ruminococcus [138], Pseudomonas, Mycoplana, Haemophilus, Blautia, and Dorea [140] and decreases in Butyricimonas [128], Lachnospiraceae, Ruminococcaceae [132], Faecalibacterium, Prevotella, Anaerostipes, Clostridia XIVa and IV Clusters [137], Fusobacteria [133], Bacteroidaceae [138], C.
Famihes Bacteroidaceae (7.1% [+ or -] 1.5%) and Paraprevotellaceae (5.6% [+ or -] 0.9%) were significantly more abundant in the large intestine than other gastrointestinal tract sections.
Phylum class Order Comp_1 Firmicutes clostridia Clostridiales * 84% 84% 84% Comp_2 Proteobacteria Gammaproteobacteria Enterobacteriales 100% 100% 100% Comp_4 Frimicutes clostridia clostridiales * 77% 65% 64% Comp_5 Firmicutes clostridia clostridiales 98% 98% 98% Comp_6 Bacteroidetes Bacteroidia Bacteroidales 100% 99% 99% Family Genus Comp_1 Lactinospiraceae Lactinofactor 22% 10% Comp_2 Enterobacteriaceae Escherichia/Shigella * 100% 85% Comp_4 Incertae sedis XI Parvimonas 15% 9% Comp_5 Ruminococcaceae Faecalibacterium * 97% 94% Comp_6 Bacteroidaceae Bacteroides * 91% 91% * The cut-off value of the bootstrap confidence threshold was set at 50%.