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Mapping brain activity of gut-brain signaling to appetite and satiety in healthy adults: A systematic review and functional neuroimaging meta-analysis

Althubeati, Sarah; Avery, Amanda; Tench, Christopher; Lobo, Dileep N.; Salter, Andrew; Eldeghaidy, Sally

Mapping brain activity of gut-brain signaling to appetite and satiety in healthy adults: A systematic review and functional neuroimaging meta-analysis Thumbnail


Authors

Sarah Althubeati

DILEEP LOBO dileep.lobo@nottingham.ac.uk
Professor of Gastrointestinal Surgery

Andrew Salter



Abstract

Understanding how neurohormonal gut-brain signaling regulates appetite and satiety is vital for the development of therapies for obesity and altered eating behavior. However, reported brain areas associated with appetite or satiety regulators show inconsistency across functional neuroimaging studies. The aim of this study was to systematically assess the convergence of brain regions modulated by appetite and satiety regulators. Twenty-five studies were considered for qualitative synthesis, and 14 independent studies (20-experiments) found eligible for coordinate-based neuroimaging meta-analyses across 212 participants and 123 foci. We employed two different meta-analysis approaches. The results from the systematic review revealed the modulation of insula, amygdala, hippocampus, and orbitofrontal cortex (OFC) with appetite regulators, where satiety regulators were more associated with caudate nucleus, hypothalamus, thalamus, putamen, anterior cingulate cortex in addition to the insula and OFC. The two neuroimaging meta-analyses methods identified the caudate nucleus as a key area associated with satiety regulators. Our results provide quantitative brain activation maps of neurohormonal gut-brain signaling in heathy-weight adults that can be used to define alterations with eating behavior.

Journal Article Type Article
Acceptance Date Mar 6, 2022
Online Publication Date Mar 9, 2022
Publication Date 2022-05
Deposit Date Mar 8, 2022
Publicly Available Date Apr 7, 2022
Journal Neuroscience and Biobehavioral Reviews
Print ISSN 0149-7634
Electronic ISSN 1873-7528
Peer Reviewed Peer Reviewed
Volume 136
Article Number 104603
DOI https://doi.org/10.1016/j.neubiorev.2022.104603
Keywords Behavioral Neuroscience; Cognitive Neuroscience; Neuropsychology and Physiological Psychology
Public URL https://nottingham-repository.worktribe.com/output/7566063
Publisher URL https://www.sciencedirect.com/science/article/pii/S0149763422000926