Metagenomic analysis reveals gut microbiota compositional and functional shifts in female IBS patients (nature.com)

• 63 female IBS patients and 34 healthy controls underwent shotgun metagenomic sequencing.
• IBS group showed enrichment of Streptococcus sp. and Desulfovibrio piger; reductions in Bifidobacterium and Methanobrevibacter.
• Functional pathways: amino acid biosynthesis upregulated in IBS; carbohydrate degradation downregulated.
• High microbial variability observed, limiting discriminative power between groups.

"This study used whole metagenome shotgun sequencing to compare gut microbiota of 63 female IBS patients with 34 healthy controls. It found reduced microbial richness in IBS, enrichment of Streptococcus and Desulfovibrio piger, and depletion of Bifidobacterium and Methanobrevibacter. Functional analysis showed increased amino acid biosynthesis and decreased carbohydrate degradation pathways in IBS. High variability highlights the need for larger multi-omics studies."