What question did this study set out to answer?

This study aims to identify the epigenomic and transcriptomic signatures connected to different types of environmental enrichment.

May 14, 2026Physiology

Mode-dependent epigenomic and transcriptomic pathways underlying environmental enrichment–induced cognitive enhancement

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Authors

MSMizuki SudoMeiji Yasuda Life Foundation of Health and Welfare RNRyo NehashiUniversity of Electro-Communications SASoichi AndoUniversity of Electro-Communications

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Implication

Randomized trial identifies different neurobiological mechanisms for cognitive enhancement in enriched environments, suggesting pathways beyond physical activity.

Key Points

This study aims to identify the epigenomic and transcriptomic signatures connected to different types of environmental enrichment.
Male Wistar rats underwent four conditions: combined wheel + objects, wheel-only, object-only, or a standard environment for 4 weeks.
Physical activity was measured using triaxial accelerometry and spatial learning was assessed via the Morris water maze.
Promoter DNA methylation was analyzed by reduced representation bisulfite sequencing and transcriptomic profiling through RNA-seq.
All enriched conditions significantly improved spatial learning compared to the standard environment (p < 0.001).
Wheel-based conditions showed markedly increased physical activity (EE and EER; p < 0.0001), but object-only enrichment enhanced cognition without changing physical activity.
Epigenomic analysis revealed substantial methylation remodeling in enrichment groups, with unique gene expression patterns linked to distinct neuroplasticity pathways.

Cite This Study

Sudo et al. (2026) studied this question.

synapsesocial.com/papers/6a05684ea550a87e60a20ce2 https://doi.org/10.1152/physiol.2026.41.s1.2295216

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Implication

Randomized trial identifies different neurobiological mechanisms for cognitive enhancement in enriched environments, suggesting pathways beyond physical activity.

Mode-dependent epigenomic and transcriptomic pathways underlying environmental enrichment–induced cognitive enhancement

Discussion

Member takes

Implication

Key Points

Cite This Study

Mode-dependent epigenomic and transcriptomic pathways underlying environmental enrichment–induced cognitive enhancement

Discussion

Member takes

Implication

Key Points

Cite This Study

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