Evidence map›Paper›PMID 21713421›Full record

ArticleAnalytical and bioanalytical chemistry2011

Analysis of urinary estrogens, their oxidized metabolites, and other endogenous steroids by benchtop orbitrap LCMS versus traditional quadrupole GCMS.

Adrian A Franke, Laurie J Custer, Yukiko Morimoto, Frank J Nordt, Gertraud Maskarinec

Open access · greenAbstract readComparative Study
In one paragraph

Article in Analytical and bioanalytical chemistry, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed, 1 pooled it
2.0field-weighted citation impact, top 14% 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

23 citing papers in PubMed, 1 synthesis or guideline pooled it, 44 citations in OpenAlex.

  1. Pooled it
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  7. Article
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  12. Current strategies for quantification of estrogens in clinical research.The Journal of steroid biochemistry and molecular biology · 2019
    Review
  13. Article
  14. Article
  15. Review
  16. β-Estradiol and ethinyl-estradiol contamination in the rivers of the Carpathian Basin.Environmental science and pollution research international · 2016
    Article
  17. Review
  18. Article
  19. Improvement of bisphenol A quantitation from urine by LCMS.Analytical and bioanalytical chemistry · 2015
    Article
  20. Article
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 3 institutions in 2 countries.

Adrian A FrankeUniversity of Hawaii Cancer Center, Clinical Sciences Program, Honolulu, HI 96813, USA. adrian@cc.hawaii.edu
Laurie J Custer
Yukiko Morimoto
Frank J Nordt
Gertraud Maskarinec
University of Hawaiʻi at Mānoa · USRheinmetall (Switzerland) · CHUniversity of Hawaii Cancer Center

Funding

University of Hawaii Cancer Center CCSGP30CA071789 · NCI · UNIVERSITY OF HAWAII AT MANOA · PI GERTRAUD MASKARINEC · 1996 to 2026
$56.2M
SOY EFFECTS ON ESTROGENS AND MAMMOGRAPHIC DENSITIESR01CA080843 · NCI · UNIVERSITY OF HAWAII AT MANOA · PI MASKARINEC, GERTRAUD · 1999 to 2010
$2.9M
MASS SPECT SYST: SOY PHYTOESTROGEN &CARDIOVASCULAR EFFECTS, ATHEROSCLEROSISS10RR020890 · NCRR · UNIVERSITY OF HAWAII AT MANOA · PI FRANKE, ADRIAN A · 2005 to 2005
$421k
NCI NIH HHS P30 CA071789NCI NIH HHS P30 CA71789NCI NIH HHS R01 CA080843NCI NIH HHS R01 CA 80843NCRR NIH HHS S10 RR020890
6 · The paper itself

Abstract

Estrogens and other endogenous steroids are known risk markers for cancer. Gas chromatography (GC) with mass spectrometry (MS) has traditionally predominated the analysis of estrogens and other endogenous steroids, but liquid chromatography (LC) MS is increasingly favored. Direct comparisons of the two technologies have hitherto not been performed. Steroids were analyzed from 232 urine samples of 78 premenopausal women in a blinded fashion by benchtop orbitrap LCMS and single quadrupole GCMS. Sixteen steroidal estrogens including oxidized metabolites could be analyzed by LCMS. LCMS-GCMS Spearman rank correlations of the major estrogens E(1), E(2), E(3), 16α-OHE(1), and 2-OHE(1) were very high (r = 0.72-0.91), and absolute concentrations also agreed (<5% difference for E(1), E(2), E(3), 16α-OHE(1)). LCMS allowed reinterrogation of the acquired data due to orbitrap technology, which permitted post-analysis quantitation of progesterone, cortisol, and cortisone (LCMS-GCMS Spearman rank correlations = 0.80-0.84; absolute difference, <7%; n = 137). GCMS allows the measurement of a wide range of steroids including non-polar analytes that escape the presented LCMS assay. In contrast, orbitrap-based LCMS can detect more estrogens, is faster, less costly, allows post-data acquisition reinterrogation of certain analytes that had not been targeted a priori, and requires much less urine.

Indexed as

Chromatography, LiquidMass SpectrometryAdultEstrogensFemaleHumansLimit of DetectionMiddle AgedOxidation-ReductionReproducibility of ResultsSteroidsEstrogensSteroids

Identifiers

PMID21713421
PMCPMC3249142
OpenAlexW1994408961

What OpenQuestion holds

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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.