title: The role of dietary polyphenols on adult hippocampal neurogenesis: molecular mechanisms and behavioural effects on depression and anxiety.
abstract: Although it has been long believed that new neurons were only generated during development, there is now growing evidence indicating that at least two regions in the brain are capable of continuously generating functional neurons: the subventricular zone and the dentate gyrus of the hippocampus. Adult hippocampal neurogenesis (AHN) is a widely observed phenomenon verified in different adult mammalian species including humans. Factors such as environmental enrichment, voluntary exercise, and diet have been linked to increased levels of AHN. Conversely, aging, stress, anxiety and depression have been suggested to hinder it. However, the mechanisms underlying these effects are still unclear and yet to be determined. In this paper, we discuss some recent findings addressing the effects of different dietary polyphenols on hippocampal cell proliferation and differentiation, models of anxiety, and depression as well as some proposed molecular mechanisms underlying those effects with particular focus on those related to AHN. As a whole, dietary polyphenols seem to exert positive effects on anxiety and depression, possibly in part via regulation of AHN. Studies on the effects of dietary polyphenols on behaviour and AHN may play an important role in the approach to use diet as part of the therapeutic interventions for mental-health-related conditions.
authors: Institute of Psychiatry, King's College London, UK.
authors: Gisele Pereira
authors: GP
authors: Dias
authors: Nicole
authors: N
authors: Cavegn
authors: Alina
authors: A
authors: Nix
authors: Mário Cesar
authors: MC
authors: do Nascimento Bevilaqua
authors: Doris
authors: D
authors: Stangl
authors: Muhammad Syahrul Anwar
authors: MS
authors: Zainuddin
authors: Antonio Egidio
authors: AE
authors: Nardi
authors: Patricia Franca
authors: PF
authors: Gardino
authors: Sandrine
authors: S
authors: Thuret
mesh_terms: D000375:Aging / Q000187:drug effects*; D000818:Animals; D001007:Anxiety / Q000188:drug therapy / Q000503:physiopathology*; D001519:Behavior / Q000187:drug effects*; D003863:Depression / Q000188:drug therapy / Q000503:physiopathology*; D004032:Diet; D006624:Hippocampus / Q000187:drug effects / Q000502:physiology*; D006801:Humans; D055495:Neurogenesis / Q000187:drug effects*; D059808:Polyphenols / Q000494:pharmacology* / Q000627:therapeutic use
chemical_list: D059808:Polyphenols