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The Role of Beta-Endorphin in Food Deprivation-Mediated Increases in Food Intake and Binge-Eating

Food deprivation and binge eating represent significant public health concerns. Previous studies have implicated that hypothalamic opioids are affected following food deprivation. However, the role of each opioid peptide is not fully understood. Therefore, we investigated the role of endogenous beta...

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Autores principales: Tolentino, Laica, Iqbal, Asif, Rahman, Shafiqur, Lutfy, Kabirullah
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9954518/
https://www.ncbi.nlm.nih.gov/pubmed/36831755
http://dx.doi.org/10.3390/brainsci13020212
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author Tolentino, Laica
Iqbal, Asif
Rahman, Shafiqur
Lutfy, Kabirullah
author_facet Tolentino, Laica
Iqbal, Asif
Rahman, Shafiqur
Lutfy, Kabirullah
author_sort Tolentino, Laica
collection PubMed
description Food deprivation and binge eating represent significant public health concerns. Previous studies have implicated that hypothalamic opioids are affected following food deprivation. However, the role of each opioid peptide is not fully understood. Therefore, we investigated the role of endogenous beta-endorphin in food deprivation-mediated increases in food intake and binge eating. Male mice lacking beta-endorphin and their respective controls were subjected to 24 h food deprivation and then were randomly assigned to receive a regular diet (RD) or a high-fat diet (HFD). After four to five weeks, animals were re-exposed to an HFD to assess if previous exposure to HFD would enhance binge-eating behavior. We report that food deprivation significantly increases food intake; however, beta-endorphin may not be involved in this process. In addition, our findings suggest that prior exposure to an HFD promotes binge-eating behavior in wildtype mice, and that these effects were modestly decreased in beta-endorphin knockout mice. Overall, our results support that beta-endorphin may play a modest role in mediating palatability-driven feeding, but not hunger-associated feeding. A better understanding of neural mechanisms involved in binge eating and deprivation-induced increases in food intake may inspire new prevention or treatment options to decrease the burden of eating disorders.
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spelling pubmed-99545182023-02-25 The Role of Beta-Endorphin in Food Deprivation-Mediated Increases in Food Intake and Binge-Eating Tolentino, Laica Iqbal, Asif Rahman, Shafiqur Lutfy, Kabirullah Brain Sci Article Food deprivation and binge eating represent significant public health concerns. Previous studies have implicated that hypothalamic opioids are affected following food deprivation. However, the role of each opioid peptide is not fully understood. Therefore, we investigated the role of endogenous beta-endorphin in food deprivation-mediated increases in food intake and binge eating. Male mice lacking beta-endorphin and their respective controls were subjected to 24 h food deprivation and then were randomly assigned to receive a regular diet (RD) or a high-fat diet (HFD). After four to five weeks, animals were re-exposed to an HFD to assess if previous exposure to HFD would enhance binge-eating behavior. We report that food deprivation significantly increases food intake; however, beta-endorphin may not be involved in this process. In addition, our findings suggest that prior exposure to an HFD promotes binge-eating behavior in wildtype mice, and that these effects were modestly decreased in beta-endorphin knockout mice. Overall, our results support that beta-endorphin may play a modest role in mediating palatability-driven feeding, but not hunger-associated feeding. A better understanding of neural mechanisms involved in binge eating and deprivation-induced increases in food intake may inspire new prevention or treatment options to decrease the burden of eating disorders. MDPI 2023-01-27 /pmc/articles/PMC9954518/ /pubmed/36831755 http://dx.doi.org/10.3390/brainsci13020212 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Tolentino, Laica
Iqbal, Asif
Rahman, Shafiqur
Lutfy, Kabirullah
The Role of Beta-Endorphin in Food Deprivation-Mediated Increases in Food Intake and Binge-Eating
title The Role of Beta-Endorphin in Food Deprivation-Mediated Increases in Food Intake and Binge-Eating
title_full The Role of Beta-Endorphin in Food Deprivation-Mediated Increases in Food Intake and Binge-Eating
title_fullStr The Role of Beta-Endorphin in Food Deprivation-Mediated Increases in Food Intake and Binge-Eating
title_full_unstemmed The Role of Beta-Endorphin in Food Deprivation-Mediated Increases in Food Intake and Binge-Eating
title_short The Role of Beta-Endorphin in Food Deprivation-Mediated Increases in Food Intake and Binge-Eating
title_sort role of beta-endorphin in food deprivation-mediated increases in food intake and binge-eating
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9954518/
https://www.ncbi.nlm.nih.gov/pubmed/36831755
http://dx.doi.org/10.3390/brainsci13020212
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