Anaerotruncus massiliensis sp. nov., a succinate-producing bacterium isolated from human stool from an obese patient after bariatric surgery

Abstract

A new bacterium, strain AT3 T , was isolated by microbial culturomics from a faecal sample from a Frenchman after bariatric surgery. The isolate exhibited 96.6% 16S ribosomal RNA gene nucleotide sequence similarity with Anaerotruncus colihominis strain WAL 14565 T = CCUG 45055 T = CIP 107754 T . Phenotypic and genomic characteristics showed that the new strain represents a novel species, for which the name Anaerotruncus massiliensis sp. nov. is proposed. The type strain is strain AT3 T = CSUR P2007 T = DSM 100567 T .

Lack of significant differences between gastrointestinal tract microbial population structure of Helicobacter pylori‐infected subjects before and 2 years after a single eradication event

“…Even more this observation is in concordance with the relative abundances of bacterial genera, where when comparing to the S‐pre‐erad state to F‐pre‐erad state samples, the later display lower abundances of such genera as oral pathobiont Oribacterium 40 and contentious Oscillibacter —described as common gut microbiome habitant in generally healthy individuals 52 and opportunistic pathogen with a potential to cause bacteremia, 53 gut microbiome habitant of nonobese individuals Allistipes, 54 and common gut member Paraprevotella , when comparing to the S‐pre‐erad state. On the other hand, the same analysis also shows that samples from F‐pre‐erad state have higher abundances of such genera as common gut microbiome habitant Acetanaerobacterium 55 and thermophilic genus Lebetimonas . While there is no statistical justification to this observation, this might advert that there are differences in bacterial population structure between individuals with successful and unsuccessful H pylori eradication, indicating that in the case of certain gut microbiome composition standard triple eradication regimen might be ineffective.…”

“…pathobiont Oribacterium40 and contentious Oscillibacter-described as common gut microbiome habitant in generally healthy individuals52 and opportunistic pathogen with a potential to cause bacteremia,53 gut microbiome habitant of nonobese individuals Allistipes,54 and common gut member Paraprevotella, when comparing to the S-pre-erad state. On the other hand, the same analysis also shows that samples from F-pre-erad state have higher abundances of such genera as common gut microbiome habitant Acetanaerobacterium55 and thermophilic genus Lebetimonas.…”

Dietary whole Goji berry (Lycium barbarum) intake improves colonic barrier function by altering gut microbiota composition in mice

“…Anaerotruncus massiliensis sp. nov., a succinate‐producing bacterium, was isolated from a stool sample collected after bariatric surgery from an obese man (Togo et al , 2019). Coprococcus produces butyrate and has been reported to play beneficial roles in maintaining gut stability (Ye et al , 2018).…”

Identification of mucin degraders of the human gut microbiota

“…Enterobacteriaceae, Peptococcales/Peptococcaceae, a variety of Clostridia (such as Oscillospiraceae, Lachnoclostridium, and Anaerotruncus), and the Coriobacteriale Eggerthella, are protein degraders that may have taken part to the breakdown of protein backbone of mucin 18 . The genus Anaerotruncus includes species (Anaerotruncus colihominis and Anaerotruncus massiliensis) that ferment some amino acids and also a small set of carbohydrates, including GlcNAc, and may have participated to the degradation of both the protein and saccharidic portions of mucins 19,20 . Holdemania, a Firmicute belonging to the family Erysipelotrichaceae, and Enterococcaceae (Lactobacillales) are saccharolytic bacteria, thus their contribution to mucin degradation seems limited to the carbohydrate chains.…”