Relationships between human vitality and mitochondrial respiratory parameters, reactive oxygen species production and dNTP levels in peripheral blood mononuclear cells

Scott Maynard, Guido Keijzers, Martin Gram, Claus Desler, Laila Bendix, Esben Budtz-Jørgensen, Drude Molbo, Deborah L Croteau, Merete Osler, Tinna Stevnsner, Lene Juel Rasmussen, Flemming Dela, Kirsten Avlund, Vilhelm Bohr

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    Abstract

    Low vitality (a component of fatigue) in middle-aged and older adults is an important complaint often identified as a symptom of a disease state or side effect of a treatment. No studies to date have investigated the potential link between dysfunctional mitochondrial ATP production and low vitality. Therefore, we measured a number of cellular parameters related to mitochondrial activity in peripheral blood mononuclear cells (PBMCs) isolated from middle-aged men, and tested for association with vitality. These parameters estimate mitochondrial respiration, reactive oxygen species (ROS) production, and deoxyribonucleotide (dNTP) balance in PBMCs. The population was drawn from the Metropolit cohort of men born in 1953. Vitality level was estimated from the Medical Outcomes Study Short Form 36 (SF-36) vitality scale. We found that vitality score had no association with any of the mitochondrial respiration parameters. However, vitality score was inversely associated with cellular ROS production and cellular deoxythymidine triphosphate (dTTP) levels and positively associated with deoxycytidine triphosphate (dCTP) levels. We conclude that self-reported persistent low vitality is not associated with specific aspects of mitochondrial oxidative phosphorylation capacity in PBMCs, but may have other underlying cellular dysfunctions that contribute to dNTP imbalance and altered ROS production.
    OriginalsprogEngelsk
    TidsskriftNature Communications
    Vol/bind5
    Nummer11
    Sider (fra-til)850-864
    Antal sider15
    ISSN2041-1723
    StatusUdgivet - 11 nov. 2013

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