Evidence map›Paper›PMID 22323823›Full record

ArticleThe Journal of pharmacology and experimental therapeutics2012

Brain distribution of cediranib is limited by active efflux at the blood-brain barrier.

Tianli Wang, Sagar Agarwal, William F Elmquist

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of pharmacology and experimental therapeutics, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 1 pooled it
4.1field-weighted citation impact, top 5% 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

22 citing papers in PubMed, 1 synthesis or guideline pooled it, 42 citations in OpenAlex.

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  20. Pharmacokinetic assessment of efflux transport in sunitinib distribution to the brain.The Journal of pharmacology and experimental therapeutics · 2013
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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

3 authors at 3 institutions in 2 countries.

Tianli WangDepartment of Pharmaceutics and Brain Barriers Research Center, University of Minnesota, Minneapolis, Minnesota, USA.
Sagar Agarwal
William F Elmquist
Pharmac · NZTwin Cities Orthopedics · USUniversity of Minnesota · US

Funding

Improving Delivery of Molecularly-Targeted Therapy to Invasive Glioma CellsR01CA138437 · NCI · UNIVERSITY OF MINNESOTA · PI ELMQUIST, WILLIAM, OHLFEST, JOHN R · 2010 to 2014
$1.5M
NCI NIH HHS CA138437NCI NIH HHS R01 CA138437
6 · The paper itself

Abstract

Cediranib is an orally active tyrosine kinase inhibitor that targets the vascular endothelial growth factor receptor family. Because of its potent antiangiogenic and antitumor activities, cediranib has been evaluated for therapy in glioma, a primary brain tumor. This study investigated the influence of two important efflux transporters at the blood-brain barrier, P-glycoprotein (P-gp) and breast cancer resistance protein (Bcrp), on the delivery of cediranib to the central nervous system. In vitro studies indicated that cediranib is a dual substrate for both P-gp and Bcrp. It is noteworthy that in spite of the in vitro data the in vivo mouse disposition studies conclusively showed that P-gp was the dominant transporter restricting the brain distribution of cediranib. The brain-to-plasma partitioning (AUC(brain)/AUC(plasma), where AUC is area under the curve) and the steady-state brain-to-plasma concentration ratio of cediranib were approximately 20-fold higher in Mdr1a/b⁻/⁻ and Mdr1a/b⁻/⁻Bcrp1⁻/⁻ mice compared with wild-type and Bcrp1⁻/⁻ mice. Moreover, there was no significant difference in brain distribution of cediranib between wild-type and Bcrp1⁻/⁻ mice and between Mdr1a/b⁻/⁻ and Mdr1a/b⁻/⁻Bcrp1⁻/⁻ mice. These results show that, unlike other tyrosine kinase inhibitors that are dual substrates for P-gp and Bcrp, Bcrp does not restrict the distribution of cediranib across the blood-brain barrier. We also show that inhibition of P-gp using specific or nonspecific inhibitors resulted in significantly enhanced delivery of cediranib to the brain. Concurrent administration of cediranib with chemical modulators of efflux transporters can be used as a strategy to enhance delivery and thus efficacy of cediranib in the brain. These findings are clinically relevant to the efficacy of cediranib chemotherapy in glioma.

Indexed as

AnimalsATP-Binding Cassette TransportersATP Binding Cassette Transporter, Subfamily B, Member 1ATP Binding Cassette Transporter, Subfamily G, Member 2Biological TransportBlood-Brain BarrierBrainCell LineCell Membrane PermeabilityDogsHumansIndolesMiceMice, KnockoutQuinazolinesTissue DistributionAbcg2 protein, mouseATP-Binding Cassette TransportersATP Binding Cassette Transporter, Subfamily B, Member 1ATP Binding Cassette Transporter, Subfamily G, Member 2cediranibIndolesQuinazolines

Identifiers

PMID22323823
PMCPMC3336816
OpenAlexW1991743260

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.