Alterations in fecal bacteriome virome interplay and microbiota-derived dysfunction in patients with schizophreniaOriginal paper
Karen Pendergrass is a microbiome researcher specializing in microbiome-targeted interventions (MBTIs). She systematically analyzes scientific literature to identify microbial patterns, develop hypotheses, and validate interventions. As the founder of the Microbiome Signatures Database, she bridges microbiome research with clinical practice. In 2012, based on her own investigative research, she became the first documented case of FMT for Celiac Disease, four years before the first published case study.
Read MoreWhat was studied?
This study profiled the fecal virome, bacteriome, and blood metabolome together in schizophrenia, testing whether gut viruses (mainly bacteriophages) shape the disease-associated bacterial community and whether those shifts reach the host through circulating metabolites.
Who was studied?
Forty-nine first-episode schizophrenia patients, most drug-naive or treated for fewer than five days, and 49 age-, sex-, and BMI-matched healthy controls at West China Hospital, Sichuan University (2021 to 2022). Fecal shotgun sequencing covered 95 participants and untargeted plasma metabolomics 92, with age, sex, BMI, and medication days controlled.
What were the most important findings?
Bacterial beta-diversity separated patients from controls at the family, genus, and species levels while alpha-diversity did not differ, and combining MaAsLin2 with ANCOM-BC flagged 7, 14, and 45 differentially abundant taxa respectively. The healthy viral-bacterial transkingdom correlation network was largely lost in schizophrenia, and the co-occurring metabolites were enriched in bile-acid and eicosanoid pathways linked to inflammation. A serial-mediation model supported a gut viruses to bacteria to metabolites to schizophrenia chain, with metabolites carrying most of the indirect effect.
What are the greatest implications of this study?
The results frame schizophrenia-associated dysbiosis as a virome-bacteriome-metabolome system rather than a bacterial shift alone, and highlight bile-acid and eicosanoid (COX and prostaglandin) metabolism as microbiota-linked, potentially treatable inflammatory routes. As a small cross-sectional study, it establishes associations and candidate biomarkers, not causation.