Evidence map›Paper›PMID 24122874›Full record

ArticleDrug metabolism and disposition: the biological fate of chemicals2014

Interindividual variability in hepatic organic anion-transporting polypeptides and P-glycoprotein (ABCB1) protein expression: quantification by liquid chromatography tandem mass spectroscopy and influence of genotype, age, and sex.

Bhagwat Prasad, Raymond Evers, Anshul Gupta, Cornelis E C A Hop, Laurent Salphati, Suneet Shukla, Suresh V Ambudkar, Jashvant D Unadkat

Open access · bronzeAbstract read
In one paragraph

Article in Drug metabolism and disposition: the biological fate of chemicals, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 93 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
93citing papers in PubMed, 2 pooled it
10.2field-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

93 citing papers in PubMed, 2 syntheses or guidelines pooled it, 193 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
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  5. Association of Tissue Abiraterone Levels andClinical cancer research : an official journal of the American Association for Cancer Research · 2017
    Trial
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  9. Investigation of thePharmaceuticals (Basel, Switzerland) · 2025
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  14. Observational
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33 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

8 authors at 4 institutions in 2 countries.

Bhagwat PrasadDepartment of Pharmaceutics, University of Washington, Seattle, Washington (B.P., J.D.U.); Pharmacokinetics, Pharmacodynamics and Drug Metabolism, Merck & Co., Rahway, New Jersey (R.E.); Drug Metabolism and Pharmacokinetics, Infection DMPK, AstraZeneca Pharmaceuticals LLP, Waltham, Massachusetts (A.G.); Drug Metabolism and Pharmacokinetics, Genentech, South San Francisco, California (C.E.H., L.S.); Laboratory of Cell Biology, Center for Cancer Research, National Institutes of Health National Cancer Institute, Bethesda, Maryland (S.S., S.V.A.).
Raymond Evers
Anshul Gupta
Cornelis E C A Hop
Laurent Salphati
Suneet Shukla
Suresh V Ambudkar
Jashvant D Unadkat
AstraZeneca (United States) · USPharmacoGenetics (China) · CNNational Cancer Institute · USNational Institutes of Health · US

Funding

Biochemical Analysis of Multidrug Resistance-linked Transport ProteinsZIABC010030 · NCI · DIVISION OF BASIC SCIENCES - NCI · PI AMBUDKAR, SURESH · 2009 to 2025
$21.6M
Intramural NIH HHS ZIA BC010030NCI NIH HHS ZIA BC010030-13
6 · The paper itself

Abstract

Interindividual variability in protein expression of organic anion-transporting polypeptides (OATPs) OATP1B1, OATP1B3, OATP2B1, and multidrug resistance-linked P-glycoprotein (P-gp) or ABCB1 was quantified in frozen human livers (n = 64) and cryopreserved human hepatocytes (n = 12) by a validated liquid chromatography tandem mass spectroscopy (LC-MS/MS) method. Membrane isolation, sample workup, and LC-MS/MS analyses were as described before by our laboratory. Briefly, total native membrane proteins, isolated from the liver tissue and cryopreserved hepatocytes, were trypsin digested and quantified by LC-MS/MS using signature peptide(s) unique to each transporter. The mean ± S.D. (maximum/minimum range in parentheses) protein expression (fmol/µg of membrane protein) in human liver tissue was OATP1B1- 2.0 ± 0.9 (7), OATP1B3- 1.1 ± 0.5 (8), OATP2B1- 1 1.7 ± 0.6 (5), and P-gp- 0.4 ± 0.2 (8). Transporter expression in the liver tissue was comparable to that in the cryopreserved hepatocytes. Most important is that livers with SLCO1B1 (encoding OATP1B1) haplotypes *14/*14 and *14/*1a [i.e., representing single nucleotide polymorphisms (SNPs), c.388A > G, and c.463C > A] had significantly higher (P < 0.0001) protein expression than the reference haplotype (*1a/*1a). Based on these genotype-dependent protein expression data, we predicted (using Simcyp) an up to ∼40% decrease in the mean area under the curve of rosuvastatin or repaglinide in subjects harboring these variant alleles compared with those harboring the reference alleles. SLCO1B3 (encoding OATP1B3) SNPs did not significantly affect protein expression. Age and sex were not associated with transporter protein expression. These data will facilitate the prediction of population-based human transporter-mediated drug disposition, drug-drug interactions, and interindividual variability through physiologically based pharmacokinetic modeling.

Indexed as

AdolescentAdultAgedAged, 80 and overAllelesATP Binding Cassette Transporter, Subfamily BATP Binding Cassette Transporter, Subfamily B, Member 1CarbamatesChildChild, PreschoolChromatography, LiquidFemaleFluorobenzenesHaplotypesHepatocytesHumansABCB1 protein, humanATP Binding Cassette Transporter, Subfamily BATP Binding Cassette Transporter, Subfamily B, Member 1CarbamatesFluorobenzenesOrganic Anion TransportersPiperidinesPyrimidinesrepaglinideRosuvastatin CalciumSulfonamides

Identifiers

PMID24122874
PMCPMC3876790
OpenAlexW2065220865

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.