Early-life stress and adolescent circadian dysrhythmia drive unique behavioral and microbial profiles in rats
Combined maternal separation and circadian disruption during adolescence impaired risk assessment behavior and produced distinct gut microbial signatures in rats.
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What the study showed
Rats exposed to dual stress (maternal separation plus altered light/dark cycle) spent significantly more time in the center of the open field arena, indicating compromised risk assessment. Each stressor condition generated a unique gut taxonomic signature, while a core microbiome was conserved across groups. The circadian disruption-only group showed the lowest number of unique microbial features.
How it was done
Rats were assigned to four groups based on early-life conditions and adolescent light/dark cycle; anxiety-like behavior and locomotor activity were assessed via Open Field Test, and gut microbiota was characterized by diversity and taxonomic profiling.
Risk of bias
The study is limited to a rodent model with uncertain translational value to humans; the abstract is truncated, precluding full evaluation of microbiome and statistical data. Group sample sizes and complete statistical analyses are not reported in the abstract.
What this study does NOT prove
It cannot be concluded that circadian or microbiota-targeted interventions reverse the effects of early-life stress in humans.
In clinical practice
Preclinical findings do not support clinical recommendations. Causal links between early circadian disruption and gut microbiota require validation in human studies.
Limitations
The study is limited to a rodent model with uncertain translational value to humans; the abstract is truncated, precluding full evaluation of microbiome and statistical data. Group sample sizes and complete statistical analyses are not reported in the abstract.
Technical appendix
Version history
- 1.0 · 2026-09-07 — Auto-generated under Evidence Standard v1.0
Paid access: structured summary from public metadata; consult the original study at the source.