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Protracted morphine withdrawal induces upregulation of peroxiredoxin II and reduces 14-3-3 protein levels in the rat brain cortex and hippocampus

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    SYSNO ASEP0573778
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JČlánek ve WOS
    TitleProtracted morphine withdrawal induces upregulation of peroxiredoxin II and reduces 14-3-3 protein levels in the rat brain cortex and hippocampus
    Author(s) Ujčíková, Hana (FGU-C) RID, ORCID
    Hejnová, L. (CZ)
    Novotný, J. (CZ)
    Svoboda, Petr (FGU-C) RID, ORCID
    Article number148428
    Source TitleBrain Research. - : Elsevier - ISSN 0006-8993
    Roč. 1813, Aug 15 (2023)
    Number of pages10 s.
    Languageeng - English
    CountryNL - Netherlands
    Keywordsprotracted morphine withdrawal ; rat brain cortex ; rat hippocampus ; Peroxiredoxin II ; 14-3-3 proteins ; oxidative stress
    OECD categoryPhysiology (including cytology)
    R&D ProjectsGA19-03295S GA ČR - Czech Science Foundation (CSF)
    Method of publishingLimited access
    Institutional supportFGU-C - RVO:67985823
    UT WOS001015314100001
    EID SCOPUS85160762624
    DOI10.1016/j.brainres.2023.148428
    AnnotationProtracted opioid withdrawal is considered to be a traumatic event with many adverse effects. However, little attention is paid to its consequences on the protein expression in the rat brain. A better understanding of the changes at the molecular level is essential for designing future innovative drug therapies. Our previous proteomic data indicated that long-term morphine withdrawal is associated with altered proteins functionally involved in energy metabolism, cytoskeletal changes, oxidative stress, apoptosis, or signal transduction. In this study, we selected peroxiredoxin II (PRX II) as a marker of oxidative stress, 14-3-3 proteins as adaptors, and creatine kinase-B (CK-B) as a marker of energy metabolism to detect their amounts in the brain cortex and hippocampus isolated from rats after 3-month (3 MW) and 6-month morphine withdrawal (6 MW). Methodically, our work was based on immunoblotting accompanied by 2D resolution of PRX II and 14-3-3 proteins. Our results demonstrate significant upregulation of PRX II in the rat brain cortex (3-fold) and hippocampus (1.3-fold) after 3-month morphine abstinence, which returned to the baseline six months since the drug was withdrawn. Interestingly, the level of 14-3-3 proteins was downregulated in both brain areas in 3 MW samples and remained decreased only in the brain cortex of 6 MW. Our findings suggest that the rat brain cortex and hippocampus exhibit the oxidative stress-induced vulnerability represented by compensatory upregulation of PRX II after three months of morphine withdrawal.
    WorkplaceInstitute of Physiology
    ContactLucie Trajhanová, lucie.trajhanova@fgu.cas.cz, Tel.: 241 062 400
    Year of Publishing2024
    Electronic addresshttps://doi.org/10.1016/j.brainres.2023.148428
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