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Ghrelin Acylation—A Post-Translational Tuning Mechanism Regulating Adult Hippocampal Neurogenesis

Martina Sassi, Alwena Morgan Orcid Logo, Jeffrey Davies Orcid Logo

Cells, Volume: 11, Issue: 5, Start page: 765

Swansea University Authors: Martina Sassi, Alwena Morgan Orcid Logo, Jeffrey Davies Orcid Logo

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DOI (Published version): 10.3390/cells11050765

Abstract

Adult hippocampal neurogenesis—the generation of new functional neurones in the adult brain—is impaired in aging and many neurodegenerative disorders. We recently showed that the acylated version of the gut hormone ghrelin (acyl-ghrelin) stimulates adult hippocampal neurogenesis while the unacylated...

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Published in: Cells
ISSN: 2073-4409
Published: MDPI AG 2022
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa61551
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Abstract: Adult hippocampal neurogenesis—the generation of new functional neurones in the adult brain—is impaired in aging and many neurodegenerative disorders. We recently showed that the acylated version of the gut hormone ghrelin (acyl-ghrelin) stimulates adult hippocampal neurogenesis while the unacylated form of ghrelin inhibits it, thus demonstrating a previously unknown function of unacyl-ghrelin in modulating hippocampal plasticity. Analysis of plasma samples from Parkinson’s disease patients with dementia demonstrated a reduced acyl-ghrelin:unacyl-ghrelin ratio compared to both healthy controls and cognitively intact Parkinson’s disease patients. These data, from mouse and human studies, suggest that restoring acyl-ghrelin signalling may promote the activation of pathways to support memory function. In this short review, we discuss the evidence for ghrelin’s role in regulating adult hippocampal neurogenesis and the enzymes involved in ghrelin acylation and de-acylation as targets to treat mood-related disorders and dementia.
Keywords: acyl-ghrelin; unacyl-ghrelin; APT1; BChE; neurodegeneration; dementia; neurogenesis
College: Faculty of Medicine, Health and Life Sciences
Funders: This research was supported by funding from BRACE Dementia Research and The Galen and Hilary Weston Foundation.
Issue: 5
Start Page: 765