Evidence map›Paper›PMID 9770465›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America1998

Identification of a human nuclear receptor defines a new signaling pathway for CYP3A induction.

G Bertilsson, J Heidrich, K Svensson, M Asman, L Jendeberg, M Sydow-Bäckman, R Ohlsson, H Postlind, P Blomquist, A Berkenstam

Open access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 1998. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 237 papers.

0numbers the graph read from it
0cells of the map it votes in
237citing papers in PubMed
13.8field-weighted citation impact, top 1% 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

237 citing papers in PubMed, 868 citations in OpenAlex.

  1. Trial
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  3. Ontogeny and sorafenib metabolism.Clinical cancer research : an official journal of the American Association for Cancer Research · 2012
    Trial
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  13. Development and hepatotoxicity of rifamycin derivatives.Expert opinion on drug metabolism & toxicology · 2025
    Review
  14. Article
  15. Article
  16. Review
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  19. Review
  20. Article

177 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

10 authors at 2 institutions in 1 country.

G BertilssonDepartment of Cell and Molecular Biology, Medical Nobel Institute, Karolinska Institute, S-171 77 Stockholm, Sweden.
J Heidrich
K Svensson
M Asman
L Jendeberg
M Sydow-Bäckman
R Ohlsson
H Postlind
P Blomquist
A Berkenstam
Nobel Foundation · SEKarolinska Institutet · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Nuclear receptors regulate metabolic pathways in response to changes in the environment by appropriate alterations in gene expression of key metabolic enzymes. Here, a computational search approach based on iteratively built hidden Markov models of nuclear receptors was used to identify a human nuclear receptor, termed hPAR, that is expressed in liver and intestines. hPAR was found to be efficiently activated by pregnanes and by clinically used drugs including rifampicin, an antibiotic known to selectively induce human but not murine CYP3A expression. The CYP3A drug-metabolizing enzymes are expressed in gut and liver in response to environmental chemicals and clinically used drugs. Interestingly, hPAR is not activated by pregnenolone 16alpha-carbonitrile, which is a potent inducer of murine CYP3A genes and an activator of the mouse receptor PXR.1. Furthermore, hPAR was found to bind to and trans-activate through a conserved regulatory sequence present in human but not murine CYP3A genes. These results provide evidence that hPAR and PXR.1 may represent orthologous genes from different species that have evolved to regulate overlapping target genes in response to pharmacologically distinct CYP3A activators, and have potential implications for the in vitro identification of drug interactions important to humans.

Indexed as

Aryl Hydrocarbon HydroxylasesReceptors, SteroidSignal TransductionAmino Acid SequenceBase SequenceCaco-2 CellsCytochrome P-450 CYP3ACytochrome P-450 Enzyme SystemDNA, ComplementaryDNA PrimersEnzyme InductionHumansMolecular Sequence DataOxidoreductases, N-DemethylatingPregnane X ReceptorReceptors, Cytoplasmic and NuclearAryl Hydrocarbon HydroxylasesCytochrome P-450 CYP3ACytochrome P-450 Enzyme SystemDNA, ComplementaryDNA PrimersOxidoreductases, N-DemethylatingPregnane X ReceptorReceptors, Cytoplasmic and NuclearReceptors, Steroid

Identifiers

PMID9770465
PMCPMC22810
OpenAlexW2019349841

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.