Cited by 120Liver physiology and pathologyLiver Diseases and ImmunityDrug-Induced Hepatotoxicity and Protection

Combination of retinoic acid and ursodeoxycholic acid attenuates liver injury in bile duct-ligated rats and human hepatic cells

Open access
He, Hongwei, Mennone, Albert, Boyer, James L., Cai, Shi-Ying·2011·Hepatology

Abstract

UNLABELLED: Cholestasis leads to liver cell death, fibrosis, cirrhosis, and eventually liver failure. Despite limited benefits, ursodeoxycholic acid (UDCA) is the only Food and Drug Administration-approved treatment for cholestatic disorders. Retinoic acid (RA) is a ligand for nuclear receptors that modulate bile salt homeostasis. RA also possesses immunomodulatory effects and is used to treat acute promyelocytic leukemia and inflammatory disorders such as psoriasis, acne, and rheumatoid arthritis. To test whether the supplementation of RA with UDCA is superior to UDCA alone for treating cholestasis, male Sprague-Dawley rats underwent common bile duct ligation (BDL) for 14 days and were treated with phosphate-buffered saline (PBS), UDCA, all-trans retinoic acid (atRA), or UDCA and atRA by gavage. Treatment with UDCA and atRA substantially improved animal growth rates, significantly reduced liver fibrosis and bile duct proliferation, and nearly eliminated liver necrosis after BDL. Reductions in the bile salt pool size and liver hydroxyproline content were also seen with treatment with atRA or atRA and UDCA versus PBS and UDCA. Furthermore, atRA and UDCA significantly reduced liver messenger RNA and/or protein expression of transforming growth factor β1 (Tgf-β1), collagen 1a1 (Col1A1), matrix metalloproteinase 2 (Mmp2), cytokeratin 19, α-smooth muscle actin (α-SMA), cytochrome P450 7A1 (Cyp7a1), tumor necrosis factor α, and interleukin-β1. The molecular mechanisms of this treatment were also assessed in human hepatocytes, hepatic stellate cells, and LX-2 cells. atRA alone or in combination with UDCA greatly repressed CYP7A1 expression in human hepatocytes and significantly inhibited COL1A1, MMP2, and α-SMA expression and/or activity in primary human hepatic stellate cells and LX-2 cells. Furthermore, atRA reduced TGF-β1-induced Smad2 phosphorylation in LX-2 cells. CONCLUSION: Our findings indicate that the addition of RA to UDCA reduces the bile salt pool size and liver fibrosis and might be an effective supplemental therapy with UDCA for cholestatic diseases.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1002/hep.24047

Cites

38 of 38 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Administration of atRAs in vitro to HSCs and in vivo in cholestatic animal models is linked to inhibition of pro-fibrotic gene expression such as TGF-β, col1α1, αSMA and MMP-2, and to protective properties regarding ECM accumulation.

    “the administration of atRAs in vitro to HSCs and in vivo in cholestatic animal models was linked to an inhibition of pro-fibrotic gene expression (TGF-β, col1α1, αSMA, and MMP-2) [179][180][181][182] and showed protective properties in regard to ECM accumulation.[183][184][185]”

    From Nuclear receptors in liver fibrosis (2021) · cites this paper as [180]

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
He, H., Mennone, A., Boyer, J. L., & Cai, S.-Y.
Affiliations
Yale University (US)
Corresponding author
  • Boyer, James L.
  • Cai, Shi-Ying
Venue
Hepatology
Published
2010-12-10
Volume
53
Issue
2
Pages
548-557
ISSN
0270-9139 (ISSN-L)
OpenAlex
W2089117732
Cited by
119
References
38
Citations by year
2026: 6 · 2025: 3 · 2024: 7 · 2023: 1 · 2022: 3 · 2021: 11 · 2020: 5 · 2019: 12 · 2018: 12 · 2017: 6 · 2016: 9 · 2015: 16 · 2014: 7 · 2013: 13 · 2012: 4
FWCI
4.40
Type
journal article
Language
en
Open access
Locations
  • Hepatology (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • American Liver Foundation
  • Yale University
  • National Institutes of Health (#N01‐DK‐7–0004/HHSN267200700004C, HHSN267200700004C, DK25636, DK34989)
  • National Institute of Diabetes and Digestive and Kidney Diseases (R01DK025636, R37DK025636, DK-34989, P30DK034989, DK 25636)
  • U.S. National Library of Medicine (HHSN267200700004C, HHSN267200700004G)
  • Yale Liver Center (DK34989)
Topics
  • Health Sciences › Medicine › Hepatology › Liver physiology and pathology
  • Health Sciences › Medicine › Hepatology › Liver Diseases and Immunity
  • Life Sciences › Pharmacology, Toxicology and Pharmaceutics › Pharmacology › Drug-Induced Hepatotoxicity and Protection
Keywords
retinoic acid, ursodeoxycholic acid, cholestasis, liver fibrosis, bile duct ligation, liver injury, hepatic stellate cells, hepatocytes, TGF-β1 signaling, Smad2 phosphorylation, collagen expression, MMP-2, CYP7A1, combination therapy
MeSH terms
Collagen Type I, alpha 1 Chain, Animals, Bile Acids and Salts, Bile Ducts, Cells, Cultured, Cholestasis, Intrahepatic, Cholesterol 7-alpha-Hydroxylase, Disease Models, Animal, Humans, Ligation, Liver, Male, Tretinoin, Ursodeoxycholic Acid, Rats, Sprague-Dawley, Matrix Metalloproteinase 2, Hepatocytes, Collagen Type I, Cell Proliferation, Rats, Smad2 Protein

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review