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Chronic stress and antidepressant treatment alter purine metabolism and beta oxidation within mouse brain and serum.

Abstract：

:Major depressive disorder (MDD) is a complex condition with unclear pathophysiology. Molecular disruptions within limbic brain regions and the periphery contribute to depression symptomatology and a more complete understanding the diversity of molecular changes that occur in these tissues may guide the development of more efficacious antidepressant treatments. Here, we utilized a mouse chronic social stress model for the study of MDD and performed metabolomic, lipidomic, and proteomic profiling on serum plus several brain regions (ventral hippocampus, nucleus accumbens, and medial prefrontal cortex) of susceptible, resilient, and unstressed control mice. To identify how commonly used tricyclic antidepressants impact the molecular composition in these tissues, we treated stress-exposed mice with imipramine and repeated our multi-OMIC analyses. Proteomic analysis identified three serum proteins reduced in susceptible animals; lipidomic analysis detected differences in lipid species between resilient and susceptible animals in serum and brain; and metabolomic analysis revealed dysfunction of purine metabolism, beta oxidation, and antioxidants, which were differentially associated with stress susceptibility vs resilience by brain region. Antidepressant treatment ameliorated stress-induced behavioral abnormalities and affected key metabolites within outlined networks, most dramatically in the ventral hippocampus. This work presents a resource for chronic social stress-induced, tissue-specific changes in proteins, lipids, and metabolites and illuminates how molecular dysfunctions contribute to individual differences in stress sensitivity.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Hamilton PJ,Chen EY,Tolstikov V,Peña CJ,Picone JA,Shah P,Panagopoulos K,Strat AN,Walker DM,Lorsch ZS,Robinson HL,Mervosh NL,Kiraly DD,Sarangarajan R,Narain NR,Kiebish MA,Nestler EJ

doi

10.1038/s41598-020-75114-5

subject

Has Abstract

pub_date

2020-10-22 00:00:00

pages

18134

issue

1

issn

2045-2322

pii

10.1038/s41598-020-75114-5

journal_volume

10

pub_type

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