ArticleBrain and behavior2021
Exposure to DMSO during infancy alters neurochemistry, social interactions, and brain morphology in long-evans rats.
Article in Brain and behavior, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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5 citing papers in PubMed, 10 citations in OpenAlex.
- Blood-brain barrier penetration and tissue distribution of the selective membrane progesterone receptor α (mPRα/PAQR7) agonist Org OD 02-0.Frontiers in endocrinology · 2026Article
- Cell freezing and the biology of inexorability: on cryoprotectants and chemical time.BioSocieties · 2024Article
- Modulation of the endoplasmic reticulum stress and unfolded protein response mitigates the behavioral effects of early-life stress.Pharmacological reports : PR · 2023Article
- Article
- Exposure to DMSO during infancy alters neurochemistry, social interactions, and brain morphology in long-evans rats.Brain and behavior · 2021Article
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Authors and funding
13 authors at 6 institutions in 1 country.
Funding
Abstract
introductionDimethyl sulfoxide (DMSO) is a widely used solvent to dissolve hydrophobic substances for clinical uses and experimental in vivo purposes. While usually regarded safe, our prior studies suggest changes to behavior following DMSO exposure. We therefore evaluated the effects of a five-day, short-term exposure to DMSO on postnatal infant rats (P6-10).
methodsDMSO was intraperitoneally injected for five days at 0.2, 2.0, and 4.0 ml/kg body mass. One cohort of animals was sacrificed 24 hr after DMSO exposure to analyze the neurometabolic changes in four brain regions (cortex, hippocampus, basal ganglia, and cerebellum) by hydrophilic interaction liquid chromatography. A second cohort of animals was used to analyze chronic alterations to behavior and pathological changes to glia and neuronal cells later in life (P21-P40).
results164 metabolites, including key regulatory molecules (retinoic acid, orotic acid, adrenic acid, and hypotaurine), were found significantly altered by DMSO exposure in at least one of the brain regions at P11 (p < .05). Behavioral tests showed significant hypoactive behavior and decreased social habits to the 2.0 and 4.0 ml DMSO/kg groups (p < .01). Significant increases in number of microglia and astrocytes at P40 were observed in the 4.0 ml DMSO/kg group (at p < .015.)
conclusionsDespite short-term exposure at low, putatively nontoxic concentrations, DMSO led to changes in behavior and social preferences, chronic alterations in glial cells, and changes in essential regulatory brain metabolites. The chronic neurological effects of DMSO exposure reported here raise concerns about its neurotoxicity and consequent safety in human medical applications and clinical trials.
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