Sleep deprivation-induced anxiety-like behaviors are associated with alterations in the gut microbiota and metabolitesOriginal 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?
Researchers examined how sleep deprivation reshapes gut microbiota and serum metabolites in rats, and whether multi-probiotic supplementation eases resulting anxiety-like behavior.
How was it studied?
Rats underwent 7 days of sleep deprivation, then 14 days of multi-probiotics or saline. Open-field tests, fecal metagenomic sequencing, and untargeted serum metabolomics were performed at baseline, day 7, and day 21.
What did they find?
By day 7, rats moved less and spent less time in the open-field center zone, signaling anxiety-like behavior. Serum lipopolysaccharide rose while uridine and tryptophan fell, and Akkermansia muciniphila, Muribaculum intestinale, and Bacteroides caecimuris declined even as overall bacterial richness increased. Fourteen days of multi-probiotics modestly eased anxiety-like behavior and significantly lowered serum LPS.
Why it matters
The findings tie sleep loss to gut-brain axis disruption through microbiota shifts and endotoxemia, suggesting chronic inflammation as a mechanistic link. Probiotics reduced LPS but this alone did not fully reverse anxiety-like behavior, per the authors' importance statement.