Dietary Intervention with Omega-3 Fatty Acids Mitigates Maternal High-Fat Diet-Induced Behavioral and Myelin-Related Alterations in Adult Offspring

Overview

Journal Curr Neuropharmacol

Publisher Bentham Science Publishers

Date 2024 Nov 4

PMID 39492773

Authors

Joanna Jastrzebska

Malgorzata Frankowska

Julita Wesolowska

Malgorzata Filip

Irena Smaga

Affiliations

Soon will be listed here.

Abstract

Background: Maternal high-fat diet (HFD) during pregnancy and lactation induces depression- like phenotype and provokes myelin-related changes in rat offspring in the prefrontal cortex (PFCTX), which persist even to adulthood.

Objective: Due to the plasticity of the developing brain, it was decided to analyze whether depressionlike phenotype and myelin-related changes in the early lifetime induced by maternal HFD (60% energy from fat) could be reversed by the omega-3 fatty acid-enriched diet (Ω3D) given from the postweaning period until adulthood (63rd day of life) in offspring.

Methods: We analyzed the effect of post-weaning Ω3D on the depressive-like phenotype (assessed by the forced swimming test) and myelin-related changes (measured using RT-qPCR, ELISA, and immunofluorescence staining) in the PFCTX of adult offspring.

Results: Ω3D reversed increased immobility time in adult offspring induced by maternal HFD, without affecting the animals' locomotor activity. Molecularly, Ω3D normalized the reduced expression levels of myelin-oligodendrocyte glycoprotein (MOG), as well as myelin and lymphocyte protein (MAL) in males and MOG in females in the PFCTX, changes initially induced by maternal HFD. Additionally, Ω3D normalized the quantity of oligodendrocyte precursor cells and mature oligodendrocytes in the prelimbic, infralimbic, and cingulate cortex in males, which were reduced following maternal HFD exposure. In females, the Ω3D effect was less pronounced, with normalization of oligodendrocyte precursors occurring only in the infralimbic cortex.

Conclusion: These findings suggest that Ω3D may play a significant role in correcting behavioral and neurobiological changes caused by adverse prenatal conditions.

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