Cited by 78Pomegranate: compositions and health benefitsAlcohol Consumption and Health EffectsGastrointestinal motility and disorders

Pomegranate prevents binge alcohol-induced gut leakiness and hepatic inflammation by suppressing oxidative and nitrative stress

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Cho, Young-Eun, Song, Byoung-Joon·2018·Redox Biology

Abstract

Alcoholic liver disease (ALD) is a major chronic liver disease worldwide and can range from simple steatosis, inflammation to fibrosis/cirrhosis possibly through leaky gut and systemic endotoxemia. We investigated whether pomegranate (POM) protects against binge alcohol-induced gut leakiness, endotoxemia, and inflammatory liver damage. After POM pretreatment for 10 days, rats were exposed to 3 oral doses of binge alcohol (5 g/kg/dose) or dextrose (as control) at 12-h intervals. Binge alcohol exposure induced leaky gut with significantly elevated plasma endotoxin and inflammatory fatty liver by increasing the levels of oxidative and nitrative stress marker proteins such as ethanol-inducible CYP2E1, inducible nitric oxide synthase, and nitrated proteins in the small intestine and liver. POM pretreatment significantly reduced the alcohol-induced gut barrier dysfunction, plasma endotoxin and inflammatory liver disease by inhibiting the elevated oxidative and nitrative stress marker proteins. POM pretreatment significantly restored the levels of intestinal tight junction (TJ) proteins such as ZO-1, occludin, claudin-1, and claundin-3 markedly diminished after alcohol-exposure. In addition, the levels of gut adherent junction (AJ) proteins (e.g., β-catenin and E-cadherin) and desmosome plakoglobin along with associated protein α-tubulin were clearly decreased in binge alcohol-exposed rats but restored to basal levels in POM-pretreated rats. Immunoprecipitation followed by immunoblot analyses revealed that intestinal claudin-1 protein was nitrated and ubiquitinated in alcohol-exposed rats, whereas these modifications were significantly blocked by POM pretreatment. These results showed for the first time that POM can prevent alcohol-induced gut leakiness and inflammatory liver injury by suppressing oxidative and nitrative stress.

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Authors
Cho, Y.-E., & Song, B.-J.
Affiliations
National Institutes of Health (US)
Corresponding author
Song, Byoung-Joon
Venue
Redox Biology
Publisher
Elsevier BV
Published
2018-09
Volume
18
Pages
266-278
ISSN
2213-2317 (ISSN-L)
OpenAlex
W2884807256
Cited by
78
References
80
Citations by year
2026: 10 · 2025: 4 · 2024: 11 · 2023: 13 · 2022: 13 · 2021: 10 · 2020: 11 · 2019: 5 · 2018: 1
FWCI
5.58
Type
journal article
Language
en
Update notices
erratum (2020-01-01)
Open access
Locations
  • Redox Biology (publishedVersion, cc-by-nc-nd)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
Funders
  • Korea Research Institute of Bioscience and Biotechnology
  • National Institute on Alcohol Abuse and Alcoholism
Topics
  • Health Sciences › Nursing › Nutrition and Dietetics › Pomegranate: compositions and health benefits
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Alcohol Consumption and Health Effects
  • Health Sciences › Medicine › Gastroenterology › Gastrointestinal motility and disorders
Keywords
Punica granatum, binge drinking, alcoholic liver disease, leaky gut, endotoxemia, oxidative stress, nitrative stress, intestinal tight junctions, adherens junctions, CYP2E1, inducible nitric oxide synthase, nitrated proteins, liver inflammation, intestinal barrier dysfunction
MeSH terms
Animals, Antioxidants, Female, Inflammation, Intestinal Mucosa, Intestines, Liver Diseases, Alcoholic, Nitrates, Permeability, Rats, Inbred F344, Apoptosis, Oxidative Stress, Tight Junctions, Plant Preparations, Lythraceae, Binge Drinking

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