Evidence map›Paper›PMID 21804189›Full record

ArticleThe Journal of clinical investigation2011

Farnesoid X receptor represses hepatic human APOA gene expression.

Indumathi Chennamsetty, Thierry Claudel, Karam M Kostner, Anna Baghdasaryan, Dagmar Kratky, Sanja Levak-Frank, Sasa Frank, Frank J Gonzalez, Michael Trauner, Gert M Kostner

Open access · hybridAbstract read
In one paragraph

Article in The Journal of clinical investigation, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
44citing papers in PubMed, 2 pooled it
3.8field-weighted citation impact, top 5% 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

44 citing papers in PubMed, 2 syntheses or guidelines pooled it, 113 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Review
  5. Lipoprotein(a) and cardiovascular disease.The Biochemical journal · 2024
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  8. Article
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  14. Transcriptional Control ofInternational journal of molecular sciences · 2022
    Article
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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

10 authors at 2 institutions in 2 countries.

Indumathi ChennamsettyInstitute of Molecular Biology and Biochemistry, Center of Molecular Medicine, Medical University of Graz, Graz, Austria.
Thierry Claudel
Karam M Kostner
Anna Baghdasaryan
Dagmar Kratky
Sanja Levak-Frank
Sasa Frank
Frank J Gonzalez
Michael Trauner
Gert M Kostner
Medical University of Graz · ATNational Cancer Institute · US

Funding

Xenobiotic ReceptorsZIABC005708 · NCI · DIVISION OF BASIC SCIENCES - NCI · PI GONZALEZ, FRANK J · 2009 to 2025
$16.4M
Austrian Science Fund FWF F 3004Austrian Science Fund FWF F 3008Austrian Science Fund FWF P 19186
6 · The paper itself

Abstract

High plasma concentrations of lipoprotein(a) [Lp(a), which is encoded by the APOA gene] increase an individual's risk of developing diseases, such as coronary artery diseases, restenosis, and stroke. Unfortunately, increased Lp(a) levels are minimally influenced by dietary changes or drug treatment. Further, the development of Lp(a)-specific medications has been hampered by limited knowledge of Lp(a) metabolism. In this study, we identified patients suffering from biliary obstructions with very low plasma Lp(a) concentrations that rise substantially after surgical intervention. Consistent with this, common bile duct ligation in mice transgenic for human APOA (tg-APOA mice) lowered plasma concentrations and hepatic expression of APOA. To test whether farnesoid X receptor (FXR), which is activated by bile acids, was responsible for the low plasma Lp(a) levels in cholestatic patients and mice, we treated tg-APOA and tg-APOA/Fxr-/- mice with cholic acid. FXR activation markedly reduced plasma concentrations and hepatic expression of human APOA in tg-APOA mice but not in tg-APOA/Fxr-/- mice. Incubation of primary hepatocytes from tg-APOA mice with bile acids dose dependently downregulated APOA expression. Further analysis determined that the direct repeat 1 element between nucleotides -826 and -814 of the APOA promoter functioned as a negative FXR response element. This motif is also bound by hepatocyte nuclear factor 4α (HNF4α), which promotes APOA transcription, and FXR was shown to compete with HNF4α for binding to this motif. These findings may have important implications in the development of Lp(a)-lowering medications.

Indexed as

Gene ExpressionAnimalsApolipoproteins ABile Acids and SaltsCells, CulturedFemaleHepatocyte Nuclear Factor 4HumansJaundice, ObstructiveLiverMiceMice, KnockoutMice, TransgenicPromoter Regions, GeneticRandom AllocationReceptor, Farnesoid X-ActivatedApolipoproteins ABile Acids and SaltsHepatocyte Nuclear Factor 4HNF4A protein, humanReceptor, Farnesoid X-ActivatedReceptors, Cytoplasmic and NuclearRNA, Messenger

Identifiers

PMID21804189
PMCPMC3163948
OpenAlexW2063491068

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.