Evidence map›Paper›PMID 29458168›Full record

ArticleJournal of hepatology2018

Apoptosis of enterocytes and nitration of junctional complex proteins promote alcohol-induced gut leakiness and liver injury.

Young-Eun Cho, Li-Rong Yu, Mohamed A Abdelmegeed, Seong-Ho Yoo, Byoung-Joon Song

Abstract read
In one paragraph

Article in Journal of hepatology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 63 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
63citing papers in PubMed, 1 pooled it
5.3field-weighted citation impact, top 4% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

63 citing papers in PubMed, 1 synthesis or guideline pooled it, 90 citations in OpenAlex.

  1. Influence of Alcohol on the Intestinal Immune System.Alcohol research : current reviews · 2025
    Pooled it
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  8. Frontiers in nutrition · 2026
    Article
  9. The Link between Alcohol Consumption and Kidney Injury.The American journal of pathology · 2026
    Review
  10. Article
  11. Short-Term Alcohol Consumption Is Sufficient to Disrupt Microbial Communities and the Intestinal and Circulating Metabolites in a Non-Human Primate Model.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2025
    Article
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  14. Review
  15. Article
  16. Article
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  18. Review
  19. Therapeutic Effects ofNutrients · 2024
    Article
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3 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 3 institutions in 2 countries.

Young-Eun ChoSection of Molecular Pharmacology & Toxicology, Laboratory of Membrane Biochemistry, National Institute on Alcohol Abuse and Alcoholism, Bethesda, MD 20892, USA.
Li-Rong YuBiomarkers and Alternative Models Branch, Division of Systems Biology, National Center for Toxicological Research, Food and Drug Administration, Jefferson, AR 72079, USA.
Mohamed A AbdelmegeedSection of Molecular Pharmacology & Toxicology, Laboratory of Membrane Biochemistry, National Institute on Alcohol Abuse and Alcoholism, Bethesda, MD 20892, USA.
Seong-Ho YooDepartment of Forensic Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea.
Byoung-Joon SongSection of Molecular Pharmacology & Toxicology, Laboratory of Membrane Biochemistry, National Institute on Alcohol Abuse and Alcoholism, Bethesda, MD 20892, USA. Electronic address: bj.song@nih.gov.
National Institute on Alcohol Abuse and Alcoholism · USNational Center for Toxicological Research · USSeoul National University · KR

Funding

Alcohol Metabolism, Functional Consequences, Apoptosis Signaling Pathways, and Organ DamageZIAAA000036 · NIAAA · NATIONAL INSTITUTE ON ALCOHOL ABUSE AND ALCOHOLISM · PI SONG, BYOUNG-JOON · 2009 to 2025
$14.8M
Intramural NIH HHS Z99 AA999999Intramural NIH HHS ZIA AA000036
6 · The paper itself

Abstract

BACKGROUND &

aimsBinge alcohol exposure causes gut leakiness, contributing to increased endotoxemia and inflammatory liver injury, although the molecular mechanisms are still elusive. This study was aimed at investigating the roles of apoptosis of enterocytes and nitration followed by degradation of intestinal tight junction (TJ) and adherens junction (AJ) proteins in binge alcohol-induced gut leakiness.

methodsThe levels of intestinal (ileum) junctional complex proteins, oxidative stress markers and apoptosis-related proteins in rodents, T84 colonic cells and autopsied human ileums were determined by immunoblot, immunoprecipitation, immunofluorescence, and mass-spectral analyses.

resultsBinge alcohol exposure caused apoptosis of gut enterocytes with elevated serum endotoxin and liver injury. The levels of intestinal CYP2E1, iNOS, nitrated proteins and apoptosis-related marker proteins were significantly elevated in binge alcohol-exposed rodents. Differential, quantitative mass-spectral analyses of the TJ-enriched fractions of intestinal epithelial layers revealed that several TJ, AJ and desmosome proteins were decreased in binge alcohol-exposed rats compared to controls. Consistently, the levels of TJ proteins (claudin-1, claudin-4, occludin and zonula occludens-1), AJ proteins (β-catenin and E-cadherin) and desmosome plakoglobin were very low in binge alcohol-exposed rats, wild-type mice, and autopsied human ileums but not in Cyp2e1-null mice. Additionally, pretreatment with specific inhibitors of CYP2E1 and iNOS prevented disorganization and/or degradation of TJ proteins in alcohol-exposed T84 colonic cells. Furthermore, immunoprecipitation followed by immunoblot confirmed that intestinal TJ and AJ proteins were nitrated and degraded via ubiquitin-dependent proteolysis, resulting in their decreased levels.

conclusionsThese results demonstrated for the first time the critical roles of CYP2E1, apoptosis of enterocytes, and nitration followed by ubiquitin-dependent proteolytic degradation of the junctional complex proteins, in promoting binge alcohol-induced gut leakiness and endotoxemia, contributing to inflammatory liver disease. LAY SUMMARY: Binge alcohol exposure causes gut leakiness, contributing to increased endotoxemia and inflammatory liver injury. Our results demonstrated for the first time the critical roles of apoptosis of enterocytes and nitration followed by ubiquitin-dependent proteolytic degradation of the junctional complex proteins in promoting this gut leakiness and endotoxemia. These results provide insight into the molecular mechanisms of alcohol-induced inflammatory liver disease.

Indexed as

ApoptosisOxidative StressAdultAgedAnimalsCells, CulturedCytochrome P450 Family 2EndotoxinsEnterocytesEthanolFemaleHepatocytesHumansIleumImmunoblottingImmunoprecipitationCYP2F1 protein, humanCytochrome P450 Family 2EndotoxinsEthanolApoptosisCytochrome P450-2E1 (CYP2E1)EthanolGut leakinessNitroxidative stressProtein nitrationTight and adherens junction proteinsUbiquitin-dependent proteolysis

Identifiers

PMID29458168
PMCPMC6008177
OpenAlexW2789510455

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.