Regulation of Circadian Genes by the MAPK Pathway: Implications for Rapid Antidepressant Action

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Accumulating evidence suggests that the circadian rhythm plays a critical role in mood regulation,and circadian disturbances are often found in patients with major depressive disorder (MDD).The mitogen-activated protein kinase (MAPK)/extracellular signal-regulated kinase (ERK) pathway is involved in mediating entrainment of the circadian system.Furthermore,the MAPK/ ERK signaling pathway has been shown to be involved in the pathogenesis of MDD and the rapid onset of action of antidepressant therapies,both pharmaceutical and non-pharmaceutical.This review provides an overview of the involvement of the MAPK/ERK pathway in modulating the circadian system in the rapid action of antidepressant therapies.This pathway holds much promise for the development of novel,rapid-onset-of-action therapeutics for MDD.
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