Evidence map›Paper›PMID 21349678›Full record

ArticleJournal of pharmaceutical and biomedical analysis2011

Validated LC-MS/MS method for the determination of maackiain and its sulfate and glucuronide in blood: application to pharmacokinetic and disposition studies.

Song Gao, Zhen Yang, Taijun Yin, Ming You, Ming Hu

Registry-linked trialOpen access · greenAbstract readValidation Study
In one paragraph

Article in Journal of pharmaceutical and biomedical analysis, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04230057 (Pharmacokinetics Study of Antitumor B in Healthy Volunteers), which is not on this map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
0.7field-weighted citation impact, top 31% 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.

NCT04230057 unknown statusnot on this mapstarted 2019, after this paper: background citation

Pharmacokinetics Study of Antitumor B in Healthy Volunteers

TypeobservationalSponsorUniversity of HoustonRan2019 to 2021Enrolled12ConditionsHealthy AdultsArmsAntitumor B
3 · Its place in the literature

Who cites it

10 citing papers in PubMed, 18 citations in OpenAlex.

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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 2 institutions in 1 country.

Song GaoDepartment of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, The University of Houston, 1441 Moursund Street, Houston, TX 77030, USA.
Zhen Yang
Taijun Yin
Ming You
Ming Hu
University of Houston · USMedical College of Wisconsin · US

Funding

Disposition of Flavonoids via Metabolic InterplayR01GM070737 · NIGMS · UNIVERSITY OF HOUSTON · PI HU, MING · 2006 to 2017
$3.7M
Chemoprevention of Lung Cancer with Anti-tumor BR01AT003203 · NCCIH · WASHINGTON UNIVERSITY · PI YOU, MING · 2007 to 2010
$1.5M
NCCIH NIH HHS AT003203NCCIH NIH HHS R01 AT003203NIGMS NIH HHS R01 GM070737
6 · The paper itself

Abstract

The purpose of this study was to develop a simultaneous, sensitive and reproducible UPLC-MS/MS method to quantify maackiain and its phase II metabolites, maackiain-sulfate (M-7-S) and maackiain-glucuronide (M-7-G). A Waters BEH C18 column was used with acetonitrile/water as mobile phases. Analysis was performed under negative ionization electrospray mass spectrometer via the multiple reaction monitoring (MRM). The one-step protein precipitation by methanol was used to extract the analytes from plasma. The results showed that the linear response range was 5000-9.75 nM for maackiain, M-7-S, and M-7-G. The lower limit of detection (LLOD) was 4.88 nM for these three analytes. The intra-day variance is less than 12.4% and accuracy is in 85.7-102.0%. The inter-day variance is less than 11.2% and accuracy is in 89.6-122.2%. The analysis was done within 4.0 min. Only 20 μl of blood is needed for the analysis due to the high sensitivity of this method. The validated method was used for pharmacokinetic study in A/J mouse, maackiain Caco-2 cell culture model experiment, and maackiain glucuronidation/sulfation metabolism studies. The applications revealed that this method can be used for maackiain, M-7-S, and M-7-G analysis in both bioequivalent buffer and in blood.

Indexed as

AnimalsCaco-2 CellsCalibrationChromatography, LiquidGlucuronidesHumansMaleMicePhytoalexinsPterocarpansReproducibility of ResultsSensitivity and SpecificityTandem Mass SpectrometryGlucuronidesinerminPhytoalexinsPterocarpans

Identifiers

PMID21349678
PMCPMC3085908
OpenAlexW2075584236

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Registered trials

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.