Evidence map›Paper›PMID 29860180›Full record

ArticleJournal of pharmaceutical and biomedical analysis2018

Simultaneous quantitation of folates, flavins and B

Isaac Asante, Hua Pei, Eugene Zhou, Siyu Liu, Darryl Chui, EunJeong Yoo, Stan G Louie

Open access · greenAbstract readValidation Study
In one paragraph

Article in Journal of pharmaceutical and biomedical analysis, 2018. 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
2.2field-weighted citation impact, top 13% 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, 20 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

7 authors at 1 institution in 1 country.

Isaac AsanteUniversity of Southern California, Los Angeles, CA, United States. Electronic address: asante@usc.edu.
Hua PeiUniversity of Southern California, Los Angeles, CA, United States.
Eugene ZhouUniversity of Southern California, Los Angeles, CA, United States.
Siyu LiuUniversity of Southern California, Los Angeles, CA, United States.
Darryl ChuiUniversity of Southern California, Los Angeles, CA, United States.
EunJeong YooHD Biosciences, San Diego, CA, United States.
Stan G LouieUniversity of Southern California, Los Angeles, CA, United States. Electronic address: slouie@usc.edu.
University of Southern California · US

Funding

Incorporating intermediate biomarkers of folate with colorectal cancerR01CA140561 · NCI · UNIVERSITY OF SOUTHERN CALIFORNIA · PI CONTI, DAVID V, SCHUMACHER, FREDRICK RAY · 2011 to 2015
$1.9M
NCI NIH HHS R01 CA140561
6 · The paper itself

Abstract

An analytical method using electrospray ionization and high- performance liquid chromatography/tandem mass spectrometry (LC/ESI-MS/MS) was developed to quantify the vitamin B metabolites found in the folate one-carbon metabolism, using 50 μL of human plasma. Analytes in plasma were extracted using protein precipitation after being stabilized in 1% ascorbic acid. The analytes were separated using a Kinetex 2.6 μm Pentafluorophenyl (2.1 × 30 mm) column utilizing a gradient mobile phase system of 0.1% formic acid in water and 100% acetonitrile in a 13.2 min run. The MS detector run using a positive multiple reaction monitoring with parameters optimized for each analyte's ion pair. The assay was selective and linear for all analytes at defined dynamic ranges. The recoveries were generally above 80% except for the folate metabolites whose recoveries dipped possibly due to the drying process. The inter-day precision (%coefficient of variation) and accuracy (%calculated concentration of the nominal concentrations) for six replicates of all quality control samples were ≤14% and within 12.2%, respectively. The lower limit of quantification ranged from 0.2 to 3.9 nM. No significant instability was observed after repeated freezing and thawing or in processed samples. The LC-MS/MS assay was found applicable for sensitive, accurate and precise quantitation of vitamin B metabolites in plasma of healthy volunteers and colorectal cancer patients.

Indexed as

AdultChromatography, High Pressure LiquidColorectal NeoplasmsFemaleFlavinsFolic AcidHealthy VolunteersHumansLimit of DetectionMaleMiddle AgedReproducibility of ResultsSpectrometry, Mass, Electrospray IonizationTandem Mass SpectrometryVitamin B 6FlavinsFolic AcidVitamin B 6Colorectal cancerFolatesLC–MS/MSMetabolitesPlasmaVitamin B

Identifiers

PMID29860180
PMCPMC7473779
OpenAlexW2803990601

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.