Evidence map›Paper›PMID 11802779›Full record

ArticleThe Biochemical journal2002

Role of glutathione in the multidrug resistance protein 4 (MRP4/ABCC4)-mediated efflux of cAMP and resistance to purine analogues.

Liqi Lai, Theresa M C Tan

Open access · bronzeAbstract read
In one paragraph

Article in The Biochemical journal, 2002. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed
6.8field-weighted citation impact, top 2% 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

31 citing papers in PubMed, 133 citations in OpenAlex.

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  14. Endocrine and metabolic regulation of renal drug transporters.Journal of biochemical and molecular toxicology · 2012
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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

2 authors at 1 institution in 1 country.

Liqi LaiDepartment of Biochemistry, Faculty of Medicine, National University of Singapore, 10 Kent Ridge Crescent, S119260, Singapore.
Theresa M C Tan
National University of Singapore · SG

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Multidrug resistance protein 4 (MRP4/ABCC4) is a member of the MRP subfamily, which in turn is a member of the superfamily of ATP-binding-cassette (ABC) transporters. Within the MRP subfamily, ABCC4,ABCC5 (MRP5), ABCC11 (MRP8) and ABCC12 (MRP9) have similar predicted membrane topologies. All lack the additional transmembrane domain, TMD(0), which is present in the other MRPs. Using cells stably overexpressing ABCC4, this study shows that ABCC4 exports GSH. ABCC4 also facilitates the efflux of cAMP. Depletion of intracellular GSH with DL-buthionine-(S,R)-sulphoximine led to decreased export of cAMP and a corresponding increase in intracellular cAMP was observed. ABCC4 also mediates resistance to purine analogues 9-(2-phosphonylmethoxyethyl)-adenine and 6-thioguanine. This resistance can be reversed by the presence of DL-buthionine-(S,R)-sulphoximine. We conclude that as well as nucleotide and nucleoside analogues, ABCC4 can mediate the export of GSH. In addition, GSH plays an important role in the function of ABCC4. Depletion of intracellular GSH adversely affects the export of cAMP by ABCC4. Resistance to nucleoside analogues is also adversely affected by depletion of cellular GSH.

Indexed as

ATP-Binding Cassette, Sub-Family C ProteinsAdenosine TriphosphateAnimalsBiological TransportBlotting, WesternCell LineCloning, MolecularCyclic AMPDogsGlutathioneHumansImmunoblottingMicroscopy, FluorescenceProtein Structure, TertiaryPurinesRibosomal ProteinsABCC4 protein, humanAdenosine TriphosphateATP-Binding Cassette, Sub-Family C ProteinsCyclic AMPGlutathionePurinesRibosomal Proteins

Identifiers

PMID11802779
PMCPMC1222332
OpenAlexW2051252658

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.