Evidence map›Paper›PMID 22318656›Full record

ArticleDrug metabolism and disposition: the biological fate of chemicals2012

Interindividual variability in hepatic expression of the multidrug resistance-associated protein 2 (MRP2/ABCC2): quantification by liquid chromatography/tandem mass spectrometry.

Anand K Deo, Bhagwat Prasad, Larissa Balogh, Yurong Lai, Jashvant D Unadkat

Open access · bronzeAbstract read
In one paragraph

Article in Drug metabolism and disposition: the biological fate of chemicals, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed, 2 pooled it
5.4field-weighted citation impact, top 3% 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

37 citing papers in PubMed, 2 syntheses or guidelines pooled it, 88 citations in OpenAlex.

  1. Abundance of Hepatic Transporters in Caucasians: A Meta-Analysis.Drug metabolism and disposition: the biological fate of chemicals · 2016
    Pooled it
  2. Pooled it
  3. Trial
  4. Article
  5. Article
  6. Review
  7. Review
  8. Review
  9. Abundance ofMolecular pharmaceutics · 2021
    Observational
  10. Article
  11. Article
  12. Review
  13. Mechanistic Modeling of the Hepatic Disposition of Estradiol-17Drug metabolism and disposition: the biological fate of chemicals · 2020
    Article
  14. Article
  15. Membrane Transporters in Human Parotid Gland-Targeted Proteomics Approach.International journal of molecular sciences · 2019
    Article
  16. Article
  17. Review
  18. Article
  19. Article
  20. Article
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 2 institutions in 1 country.

Anand K DeoDepartment of Pharmaceutics, University of Washington, P.O. Box 357610, Seattle, WA 98195, USA.
Bhagwat Prasad
Larissa Balogh
Yurong Lai
Jashvant D Unadkat
University of Washington · USPfizer (United States) · US

Funding

TOXIC DRUG INTERACTIONS WITH VALPROIC ACIDP01GM032165 · NIGMS · UNIVERSITY OF WASHINGTON · PI RETTIE, ALLAN EDWARD · 1985 to 2012
$18.3M
NIGMS NIH HHS GM32165NIGMS NIH HHS P01 GM032165
6 · The paper itself

Abstract

Multidrug-associated protein 2 (MRP2) is an efflux transporter that is expressed at the bile canalicular membrane. To allow in vitro to in vivo extrapolation of the contribution of MRP2 toward hepatic disposition of its substrates, data on the interindividual variability of hepatic MRP2 protein expression are required. Therefore, we quantified the expression of MRP2 in the University of Washington (UW) human liver bank (n = 51) using a modified version of a previously validated liquid chromatography/tandem mass spectrometry assay. An unlabeled (LTIIPQDPILFSGSLR) and stable isotope-labeled (LTIIPQDPILFSGSL[(13)C(6)(15)N(1)]R) surrogate peptide for MRP2 were used as the calibrator and internal standard, respectively. After isolation of the membrane fraction from the liver tissue, in-solution tryptic digestion was conducted. Quality control samples created by spiking human serum albumin or pooled human liver (n = 51) matrix with three different MRP2 synthetic peptide concentrations generated error and precision values of less than 15%. As determined by the surrogate peptide, the average MRP2 expression in the UW liver bank samples was 1.54 ± 0.64 fmol/μg liver membrane protein and was found to be independent of age (7-63 years) or sex. A single nucleotide polymorphism in the promoter region (rs717620), previously thought to affect MRP2 expression, did not influence hepatic expression of MRP2. In contrast, the single nucleotide polymorphism 21214G>A (V417I; rs2273697) was associated with significantly higher hepatic MRP2 expression.

Indexed as

Gene ExpressionPolymorphism, Single NucleotideAdolescentAdultAge FactorsATP-Binding Cassette, Sub-Family C ProteinsCell MembraneChildChromatography, High Pressure LiquidFemaleHumansLiverMaleMiddle AgedMultidrug Resistance-Associated Protein 2Quality ControlABCC2 protein, humanATP-Binding Cassette, Sub-Family C ProteinsMultidrug Resistance-Associated Protein 2

Identifiers

PMID22318656
PMCPMC3336801
OpenAlexW1999715603

What OpenQuestion holds

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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.