Evidence map›Paper›PMID 17005808›Full record

ArticleAntimicrobial agents and chemotherapy2006

Mechanism of active renal tubular efflux of tenofovir.

Adrian S Ray, Tomas Cihlar, Kelly L Robinson, Leah Tong, Jennifer E Vela, Michael D Fuller, Lani M Wieman, Eugene J Eisenberg, Gerry R Rhodes

Open access · greenAbstract read
In one paragraph

Article in Antimicrobial agents and chemotherapy, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 132 papers.

0numbers the graph read from it
0cells of the map it votes in
132citing papers in PubMed
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

132 citing papers in PubMed, 325 citations in OpenAlex.

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72 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

9 authors at 1 institution in 1 country.

Adrian S RayDepartment of Drug Metabolism, Gilead Sciences, Inc, Foster City, CA 94404, USA. adrian.ray@gilead.com
Tomas Cihlar
Kelly L Robinson
Leah Tong
Jennifer E Vela
Michael D Fuller
Lani M Wieman
Eugene J Eisenberg
Gerry R Rhodes
Gilead Sciences (United States) · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Tenofovir (TFV) undergoes renal elimination by a combination of glomerular filtration and active tubular secretion. While transporter-mediated uptake of TFV from the blood into proximal-tubule cells has been well characterized, comparatively little is known about the efflux system responsible for transporting TFV into the lumen during active tubular secretion. Therefore, members of the ATP-binding cassette family of efflux pumps expressed at the apical side of proximal-tubule cells were studied for the ability to transport TFV. Studies in multiple independent in vitro systems show TFV not to be a substrate for P glycoprotein (Pgp) or multidrug resistance protein type 2 (MRP2). In contrast to Pgp and MRP2, TFV was observed to be a substrate for MRP4. TFV accumulated to fivefold lower levels in MRP4-overexpressing cells, and its accumulation could be increased by an MRP inhibitor. Furthermore, MRP4-overexpressing cells were found to be 2.0- to 2.5-fold less susceptible to cytotoxicity caused by TFV. ATP-dependent uptake of TFV was observed in membrane vesicles containing MRP4 but not in vesicles lacking the transporter. On the basis of these and previous results, the molecular transport pathway for the active tubular secretion of TFV through renal proximal-tubule cells involves uptake from the blood mediated by human organic anion transporters 1 and 3 and efflux into urine by MRP4. A detailed understanding of the molecular mechanism of TFV active tubular secretion will facilitate the assessment of potential renal drug-drug interactions with coadministered agents.

Indexed as

AdenineAnimalsAnti-HIV AgentsATP-Binding Cassette, Sub-Family C ProteinsCell LineCell Line, TumorDogsHumansKidney Tubules, ProximalOrganic Anion TransportersOrganophosphonatesReverse Transcriptase InhibitorsTenofovirABCC4 protein, humanAdenineAnti-HIV AgentsATP-Binding Cassette, Sub-Family C Proteinsmultidrug resistance-associated protein 1multidrug resistance-associated protein 3Organic Anion TransportersOrganophosphonatesReverse Transcriptase InhibitorsTenofovir

Identifiers

PMID17005808
PMCPMC1610069
OpenAlexW2029773175

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.