Obesity

The visceral adipose tissue bacterial microbiota provides a signature of obesity based on inferred metagenomic functions

Int J Obes (Lond)Published Mechanistic study

An erratum to this article was published (Int J Obes (Lond), Oct 2023 ↗)

Authors' conclusion

This innovative approach generates novel hypotheses regarding the gut to adipose tissue axis in obesity and notably the potential role of tissue microbiota.

Study context

Population
Patients with obesity; visceral adipose depot sampled
Comparison
Lean vs patients with obesity and people with severe obesity
Outcome
Visceral adipose tissue bacterial 16S rRNA gene signature
Methodological detailsCare (surgical, biochemical, bioinformatic) taken to avoid environmental contaminants; statistical discriminant analyses and interaction networks
  • Care (surgical, biochemical, bioinformatic) taken to avoid environmental contaminants; statistical discriminant analyses and interaction networks

Main finding

As reported in the abstract

  • Specific 16S rRNA gene signature of numerous bacterial families discriminated lean vs patients with obesity and people with severe obesity
  • Main discriminant families: Burkholderiaceae, Yearsiniaceae and Xanthomonadaceae, all gram-negative
  • Morganellaceae totally absent in people without obesity, preponderant in all patients with obesity

Further findings

Inferred metabolic pathways from 16S rRNA gene signatures

Several pathways associated with adenosyl-cobalamine, previously linked with adipose tissue development
Chorismate biosynthesis, involved in aromatic amino-acid metabolism, possibly playing a role in fat pad development

Original publication

The visceral adipose tissue bacterial microbiota provides a signature of obesity based on inferred metagenomic functions. Int J Obes (Lond). Published 24 July 2023. doi:10.1038/s41366-023-01341-1

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