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Brain Transcriptome Analysis Reveals Exercise Improves Methamphetamine-Induced Impairments in Mouse Learning and
Qiuyue Huang1, Jisheng Xu1, Xuejie Zhang1
1School of Sports Medicine and Health, Chengdu Sport University, Chengdu, China.
Addiction Biology
|August 9, 2025
Summary
Treadmill exercise intervention improved learning and memory in methamphetamine (METH)-addicted mice by modulating brain gene expression. This study highlights exercise as a potential therapeutic strategy for METH-induced cognitive deficits.
Area of Science:
- Neuroscience
- Pharmacology
- Genetics
Background:
- Methamphetamine (METH) abuse causes significant neurotoxicity, leading to cognitive impairments, particularly affecting learning and memory.
- Physical exercise is known to induce beneficial structural and functional changes in the central nervous system.
Purpose of the Study:
- To investigate the protective effects of treadmill exercise on the brains of METH-addicted mice.
- To elucidate the underlying molecular mechanisms by which exercise intervention mitigates METH-induced neurotoxicity and cognitive deficits.
Main Methods:
- Mice were divided into control, METH-treated, and METH-treated with treadmill exercise groups.
- METH addiction was assessed using conditioned place preference.
- Cognitive function (learning and memory) was evaluated using the Y-maze test.
- Brain transcriptome sequencing and quantitative PCR were performed to analyze gene expression changes.
Main Results:
- Treadmill exercise significantly improved learning and memory capabilities in METH-addicted mice compared to those not receiving exercise.
- Transcriptome analysis revealed significant differences in gene expression profiles between METH-treated and exercise-intervention groups.
- Differentially expressed genes in exercise-treated mice were associated with key signaling pathways, including PI3K-Akt, mTOR, and Wnt.
Conclusions:
- Treadmill exercise intervention demonstrates a safeguarding effect against METH-induced neurotoxicity and cognitive dysfunction.
- Exercise modulates the brain's transcriptome in METH-addicted mice, offering potential therapeutic benefits for addiction-related cognitive impairments.
