Evidence map›Paper›PMID 19683513›Full record

ArticleBiochemical and biophysical research communications2009

Inhibition of human P-glycoprotein transport and substrate binding using a galantamine dimer.

Hilda A Namanja, Dana Emmert, Marcos M Pires, Christine A Hrycyna, Jean Chmielewski

Abstract read
In one paragraph

Article in Biochemical and biophysical research communications, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
1.6field-weighted citation impact, top 16% 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

14 citing papers in PubMed, 35 citations in OpenAlex.

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  13. A multivalent probe for AI-2 quorum-sensing receptors.Journal of the American Chemical Society · 2011
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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

5 authors at 1 institution in 1 country.

Hilda A NamanjaDepartment of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN 47907-2084, USA.
Dana Emmert
Marcos M Pires
Christine A Hrycyna
Jean Chmielewski
Purdue University West Lafayette · US

Funding

Modulating P-glycoprotein to Enhance Neurodegenerative Drug Penetration of BrainR21EY018481 · NEI · PURDUE UNIVERSITY · PI HRYCYNA, CHRISTINE A · 2007 to 2008
$396k
NEI NIH HHS EY018481NEI NIH HHS R21 EY018481
6 · The paper itself

Abstract

The human multidrug resistance transporter P-glycoprotein (P-gp) prevents the entry of compounds into the brain by an active efflux mechanism at the blood-brain barrier (BBB). Treatment of neurodegenerative diseases, therefore, has become a challenge and the development of new reversible inhibitors of P-gp is pertinent to overcome this problem. We report the design and synthesis of a crosslinked agent based on the Alzheimer's disease treatment galantamine (Gal-2) that inhibits P-gp-mediated efflux from cultured cells. Gal-2 was found to inhibit the efflux of the fluorescent P-gp substrate rhodamine 123 in cancer cells that over-express P-gp with an IC(50) value of approximately 0.6 microM. In addition, Gal-2 was found to inhibit the efflux of therapeutic substrates of P-gp, such as doxorubicin, daunomycin and verapamil with IC(50) values ranging from 0.3 to 1.6 microM. Through competition experiments, it was determined that Gal-2 modulates P-gp mediated efflux by competing for the substrate binding sites. These findings support a potential role of agents, such as Gal-2, as inhibitors of P-gp at the BBB to augment treatment of neurodegenerative diseases.

Indexed as

Antibiotics, AntineoplasticATP Binding Cassette Transporter, Subfamily B, Member 1Blood-Brain BarrierDaunorubicinDimerizationDoxorubicinGalantamineHumansInhibitory Concentration 50VerapamilAntibiotics, AntineoplasticATP Binding Cassette Transporter, Subfamily B, Member 1DaunorubicinDoxorubicinGalantamineVerapamil

Identifiers

PMID19683513
PMCPMC2764298
OpenAlexW2042928835

What OpenQuestion holds

Textmetadata
LicenceTDM
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.