Evidence map›Paper›PMID 16842400›Full record

ArticleBritish journal of clinical pharmacology2006

Induction of P-glycoprotein in lymphocytes by carbamazepine and rifampicin: the role of nuclear hormone response elements.

Andrew Owen, Chris Goldring, Paul Morgan, B Kevin Park, Munir Pirmohamed

Open access · bronzeAbstract read
In one paragraph

Article in British journal of clinical pharmacology, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
1.5field-weighted citation impact, top 18% 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

17 citing papers in PubMed, 45 citations in OpenAlex.

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  12. The influence ofBalkan journal of medical genetics : BJMG · 2016
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  16. Metabolism considerations for kinase inhibitors in cancer treatment.Expert opinion on drug metabolism & toxicology · 2010
    Review
  17. 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.

Andrew OwenDepartment of Pharmacology and Therapeutics, The University of Liverpool, Liverpool, UK.
Chris Goldring
Paul Morgan
B Kevin Park
Munir Pirmohamed
University of Liverpool · GBPfizer (United Kingdom) · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimsCarbamazepine (CBZ) is an inducer of cytochrome P450 enzymes, which have been implicated in many drug interactions. However, for immunosuppressant and anti-HIV drugs, whose main site of action is the lymphocyte, induction of P-glycoprotein (Pgp) may also be important. In this study, we have investigated whether CBZ acts as an inducer of Pgp in lymphocytes.

methodsPgp expression was assessed by flow cytometry and real-time reverse transcriptase-polymerase chain reaction using lymphocytes from four healthy subjects after incubation with therapeutic concentrations of CBZ, using rifampicin as a positive control. Binding to DR-4 elements in the MDR1 promoter was assessed by electrophoretic mobility shift assay (EMSA) and a luciferase-reporter construct.

resultsCBZ increased MDR1 mRNA expression at 6 h by 3.7-fold [95% confidence interval (CI) 0, 7.6) when compared with controls. CBZ increased lymphocyte Pgp expression at 72 h by 7.6-fold (95% CI 2.1, 13.2) over control values. EMSA revealed a 2.1-fold (95% CI 1.5, 2.7) increased binding to the DR-4 element of CBZ when compared with control values. Activation of the DR-4 element was confirmed using reporter constructs. Rifampicin also had similar effects in all experiments.

conclusionsCarbamazepine induces Pgp in a manner comparable to rifampicin, by increasing binding to the DR4 element. This has implications for interactions involving drugs whose site of action is the lymphocyte.

Indexed as

AnticonvulsantsATP Binding Cassette Transporter, Subfamily B, Member 1Binding SitesCarbamazepineCell LineCells, CulturedElectrophoretic Mobility Shift AssayEnzyme InhibitorsFemaleHumansLeukocytes, MononuclearMalePromoter Regions, GeneticResponse ElementsReverse Transcriptase Polymerase Chain ReactionRifampinAnticonvulsantsATP Binding Cassette Transporter, Subfamily B, Member 1CarbamazepineEnzyme InhibitorsRifampinRNA, Messenger

Identifiers

PMID16842400
PMCPMC1885083
OpenAlexW2092922558

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.