Evidence map›Paper›PMID 24055700›Full record

ArticleJournal of pharmaceutical and biomedical analysis2014

Bioanalytical method for evaluating the pharmacokinetics of the GCP-II inhibitor 2-phosphonomethyl pentanedioic acid (2-PMPA).

Rana Rais, Camilo Rojas, Krystyna Wozniak, Ying Wu, Ming Zhao, Takashi Tsukamoto, Michelle A Rudek, Barbara S Slusher

Open access · greenAbstract read
In one paragraph

Article in Journal of pharmaceutical and biomedical analysis, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
1.9field-weighted citation impact, top 15% 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

12 citing papers in PubMed, 16 citations in OpenAlex.

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  8. Local enema treatment to inhibit FOLH1/GCPII as a novel therapy for inflammatory bowel disease.Journal of controlled release : official journal of the Controlled Release Society · 2017
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  10. JCI insight · 2016
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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

8 authors at 3 institutions in 1 country.

Rana RaisBrain Science Institute, Johns Hopkins School of Medicine, Baltimore, MD 21205, USA; Department of Neurology, Johns Hopkins School of Medicine, Baltimore, MD 21205, USA.
Camilo Rojas
Krystyna Wozniak
Ying Wu
Ming Zhao
Takashi Tsukamoto
Michelle A Rudek
Barbara S Slusher
Johns Hopkins Medicine · USJohns Hopkins University · USSidney Kimmel Comprehensive Cancer Center · US

Funding

Translational Research Central ServicesP30CA006973 · NCI · JOHNS HOPKINS UNIVERSITY · PI WILLIAM George NELSON · 1985 to 2026
$208.6M
Institute for Clinical and Translational Research (UL1)UL1RR025005 · NCRR · JOHNS HOPKINS UNIVERSITY · PI FORD, DANIEL ERNEST · 2007 to 2011
$75.8M
Institute for Clinical and Translational ResearchUL1TR001079 · NCATS · JOHNS HOPKINS UNIVERSITY · PI FORD, DANIEL ERNEST · 2013 to 2017
$60.1M
GCPII Inihibitors for the treatment of chemotherapy-induced neuropathyR01CA161056 · NCI · JOHNS HOPKINS UNIVERSITY · PI SLUSHER, BARBARA STAUCH · 2012 to 2016
$1.8M
UPLC with Tandem MS for Sensitive Quantitative Analysis of Small MoleculesS10RR026824 · NCRR · JOHNS HOPKINS UNIVERSITY · PI RUDEK, MICHELLE A · 2010 to 2010
$429k
NCATS NIH HHS UL1 TR001079NCI NIH HHS P30 CA006973NCI NIH HHS P30CA006973NCI NIH HHS R01 CA161056NCI NIH HHS R01CA161056NCRR NIH HHS 1S10RR026824-01NCRR NIH HHS S10 RR026824NCRR NIH HHS UL1 RR025005NCRR NIH HHS UL1RR025005
6 · The paper itself

Abstract

2-Phosphonomethyl pentanedioic acid (2-PMPA) is a potent and selective inhibitor of glutamate carboxypeptidase-II, an enzyme which catabolizes the abundant neuropeptide N-acetyl-aspartyl-glutamate (NAAG) to N-acetylaspartate (NAA) and glutamate. 2-PMPA demonstrates robust efficacy in numerous animal models of neurological disease, however its pharmacokinetics has not yet been fully described. 2-PMPA is a highly polar compound with multiple negative charges causing significant challenges for analysis in biological matrices. Here we report a derivatization method for the acidic groups that involved protein precipitation with acetonitrile followed by reaction with N-tert-butyldimethysilyl-N-methyltrifluoroacetamide (MTBSTFA). The silylated analyte with transitions (683→551.4) and the internal standard (669→537.2) were monitored by tandem mass spectrometry with electrospray positive ionization mode. The method was subsequently used to evaluate 2-PMPA pharmacokinetics in rats. Intraperitoneal administration of 100mg/kg 2-PMPA resulted in maximum concentration in plasma of 275μg/mL at 0.25h. The half-life, area under the curve, apparent clearance, and volume of distribution were 0.64h, 210μg×h/mL, 7.93mL/min/kg, and 0.44L/kg, respectively. The tissue/plasma ratios in brain, sciatic nerve and dorsal root ganglion were 0.018, 0.120 and 0.142, respectively. In summary, a sensitive analytical method for 2-PMPA is reported that can be employed for similarly charged molecules.

Indexed as

AnimalsArea Under CurveBrainCalibrationChemistry, PharmaceuticalChemistry Techniques, AnalyticalChromatography, LiquidEnzyme InhibitorsGanglia, SpinalGlutamate Carboxypeptidase IIInfusions, ParenteralMaleOrganophosphorus CompoundsPlasmaRatsRats, Wistar2-(phosphonomethyl)pentanedioic acidEnzyme InhibitorsGlutamate Carboxypeptidase IIOrganophosphorus Compounds2-phosphonomethyl pentanedioic acid2-phosphonomethyl succinic acid2-PMPA2-PMSAabove upper limits of quantitationANOVAarea under the concentration–time curveAUCAULQBrain/plasma ratioCEC(max)collision cell exit potentialcollision energyCXPdeclustering potentialDerivatizationdorsal root ganglionDPDRGentrance potentialEPGCP-IIglutamate carboxypeptidase-IIGlutamate carboxypeptidase-IIhigh quality controlHQCLLOQlower limit of quantitationlow quality controlLQCmaximum plasma concentrationmedium quality controlMQCMTBSTFANAAGNAALADaseN-acetyl-aspartyl glutamateN-acetylated-alpha-linked acidic dipeptidaseN-tert-butyldimethysilyl-N-methyl trifluoroacetamideone-way analysis of variancePharmacokineticsprostate specific membrane antigenPSMAtime to C(max)T(max)

Identifiers

PMID24055700
PMCPMC3891469
OpenAlexW2001773630

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.