Evidence map›Paper›PMID 22808024›Full record

ArticlePloS one2012

Effect of graded Nrf2 activation on phase-I and -II drug metabolizing enzymes and transporters in mouse liver.

Kai Connie Wu, Julia Yue Cui, Curtis D Klaassen

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 81 papers.

0numbers the graph read from it
0cells of the map it votes in
81citing papers in PubMed
4.4field-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

81 citing papers in PubMed, 144 citations in OpenAlex.

  1. Review
  2. International journal of molecular sciences · 2026
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  10. Microglia at the blood brain barrier in health and disease.Frontiers in cellular neuroscience · 2024
    Review
  11. Review
  12. Transcription Factor NRF2 in Shaping Myeloid Cell Differentiation and Function.Advances in experimental medicine and biology · 2024
    Review
  13. Review
  14. Nrf2Frontiers in genetics · 2023
    Article
  15. Review
  16. Review
  17. Article
  18. Drug metabolism and disposition: the biological fate of chemicals · 2022
    Article
  19. Article
  20. Article

21 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

3 authors at 1 institution in 1 country.

Kai Connie WuDepartment of Pharmacology, University of Kansas Medical Center, Kansas City, Kansas, United States of America.
Julia Yue Cui
Curtis D Klaassen
University of Kansas Medical Center · US

Funding

THE ROLE OF HUMAN PXR IN ANTI-TUBERCULOSIS DRUG-INDUCED LIVER INJURYP20RR021940 · NCRR · UNIVERSITY OF KANSAS MEDICAL CENTER · PI JAESCHKE, HARTMUT W. · 2006 to 2011
$12.1M
Regulation of Hepatic Excretion of Xenobiotics by MrpsR01ES009716 · NIEHS · UNIVERSITY OF KANSAS MEDICAL CENTER · PI KLAASSEN, CURTIS DEAN · 2000 to 2010
$3.2M
Nrf2 as a Master Regulator in Liver Disease Prevention and TherapyR01DK081461 · NIDDK · UNIVERSITY OF KANSAS MEDICAL CENTER · PI KLAASSEN, CURTIS DEAN · 2009 to 2012
$1.3M
NCRR NIH HHS P20 RR021940NCRR NIH HHS RR-021940NIDDK NIH HHS DK-081461NIDDK NIH HHS R01 DK081461NIEHS NIH HHS ES-009716NIEHS NIH HHS R01 ES009716
6 · The paper itself

Abstract

Nuclear factor erythroid 2-related factor 2 (Nrf2) is a transcription factor that induces a battery of cytoprotective genes in response to oxidative/electrophilic stress. Kelch-like ECH associating protein 1 (Keap1) sequesters Nrf2 in the cytosol. The purpose of this study was to investigate the role of Nrf2 in regulating the mRNA of genes encoding drug metabolizing enzymes and xenobiotic transporters. Microarray analysis was performed in livers of Nrf2-null, wild-type, Keap1-knockdown mice with increased Nrf2 activation, and Keap1-hepatocyte knockout mice with maximum Nrf2 activation. In general, Nrf2 did not have a marked effect on uptake transporters, but the mRNAs of organic anion transporting polypeptide 1a1, sodium taurocholate cotransporting polypeptide, and organic anion transporter 2 were decreased with Nrf2 activation. The effect of Nrf2 on cytochrome P450 (Cyp) genes was minimal, with only Cyp2a5, Cyp2c50, Cyp2c54, and Cyp2g1 increased, and Cyp2u1 decreased with enhanced Nrf2 activation. However, Nrf2 increased mRNA of many other phase-I enzymes, such as aldo-keto reductases, carbonyl reductases, and aldehyde dehydrogenase 1. Many genes involved in phase-II drug metabolism were induced by Nrf2, including glutathione S-transferases, UDP- glucuronosyltransferases, and UDP-glucuronic acid synthesis enzymes. Efflux transporters, such as multidrug resistance-associated proteins, breast cancer resistant protein, as well as ATP-binding cassette g5 and g8 were induced by Nrf2. In conclusion, Nrf2 markedly alters hepatic mRNA of a large number of drug metabolizing enzymes and xenobiotic transporters, and thus Nrf2 plays a central role in xenobiotic metabolism and detoxification.

Indexed as

Metabolic Detoxication, Phase IMetabolic Detoxication, Phase IIAdaptor Proteins, Signal TransducingAnimalsBiological TransportCytochrome P-450 Enzyme SystemCytoskeletal ProteinsGene Expression ProfilingGene Expression RegulationHepatocytesKelch-Like ECH-Associated Protein 1LiverMembrane Transport ProteinsMiceMice, KnockoutNF-E2-Related Factor 2Adaptor Proteins, Signal TransducingCytochrome P-450 Enzyme SystemCytoskeletal ProteinsKeap1 protein, mouseKelch-Like ECH-Associated Protein 1Membrane Transport ProteinsNfe2l2 protein, mouseNF-E2-Related Factor 2RNA, Messenger

Identifiers

PMID22808024
PMCPMC3395627
OpenAlexW1984534635

What OpenQuestion holds

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LicenceCC BY
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.