Evidence map›Paper›PMID 30712596›Full record

ArticleAnalytica chimica acta2019

Derivatization enhances analysis of estrogens and their bioactive metabolites in human plasma by liquid chromatography tandem mass spectrometry.

Nina Denver, Shazia Khan, Ioannis Stasinopoulos, Colin Church, Natalie Zm Homer, Margaret R MacLean, Ruth Andrew

Open access · hybridAbstract read
In one paragraph

Article in Analytica chimica acta, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
3.7field-weighted citation impact, top 6% 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, 48 citations in OpenAlex.

  1. Review
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  10. Novel detection method to rapidly quantify toxic cucurbitacin inJournal of food science and technology · 2023
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  19. Fulvestrant for the Treatment of Pulmonary Arterial Hypertension.Annals of the American Thoracic Society · 2019
    Article
  20. Current strategies for quantification of estrogens in clinical research.The Journal of steroid biochemistry and molecular biology · 2019
    Review
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 3 institutions in 1 country.

Nina DenverMass Spectrometry Core, Edinburgh Clinical Research Facility, Queen's Medical Research Institute, 47 Little France Crescent, Edinburgh, EH16 4TJ, United Kingdom; Institute of Cardiovascular and Medical Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, University Avenue, Glasgow, G12 8QQ, United Kingdom. Electronic address: n.denver.1@research.gla.ac.uk.
Shazia KhanMass Spectrometry Core, Edinburgh Clinical Research Facility, Queen's Medical Research Institute, 47 Little France Crescent, Edinburgh, EH16 4TJ, United Kingdom. Electronic address: Shazia.Khan@ed.ac.uk.
Ioannis StasinopoulosMass Spectrometry Core, Edinburgh Clinical Research Facility, Queen's Medical Research Institute, 47 Little France Crescent, Edinburgh, EH16 4TJ, United Kingdom. Electronic address: s1474874@sms.ed.ac.uk.
Colin ChurchScottish Pulmonary Vascular Unit, Golden Jubilee National Hospital, Agamemnon St, Clydebank, G81 4DY, United Kingdom. Electronic address: colinchurch@nhs.net.
Natalie Zm HomerMass Spectrometry Core, Edinburgh Clinical Research Facility, Queen's Medical Research Institute, 47 Little France Crescent, Edinburgh, EH16 4TJ, United Kingdom. Electronic address: n.z.m.homer@ed.ac.uk.
Margaret R MacLeanInstitute of Cardiovascular and Medical Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, University Avenue, Glasgow, G12 8QQ, United Kingdom. Electronic address: Mandy.MacLean@glasgow.ac.uk.
Ruth AndrewMass Spectrometry Core, Edinburgh Clinical Research Facility, Queen's Medical Research Institute, 47 Little France Crescent, Edinburgh, EH16 4TJ, United Kingdom. Electronic address: ruth.andrew@ed.ac.uk.
The Queen's Medical Research Institute · GBGolden Jubilee National Hospital · GBUniversity of Glasgow · GB

Funding

British Heart Foundation RG/16/2/32153Medical Research Council MC_PC_12014Wellcome Trust
6 · The paper itself

Abstract

Estrogens regulate many diverse biological processes in health and disease. They circulate at a wide range of concentrations in females generating several active metabolites (hydroxy and methoxyestrogens). The metabolites are assumed to be present in much lower levels and are thought to contribute to diseases such as pulmonary arterial hypertension (PAH). Estrogen metabolites are challenging to quantify in plasma and currently available immunoassays are non-specific. Here we have developed and validated a novel assay to simultaneously quantify parent estrogens and their metabolites by mass spectrometry (MS). Estrogens were extracted from human plasma using solid phase extraction and derivatized using 1-(5-fluoro-2, 4-dinitrophenyl)-4-methylpiperazine (PPZ) before quaternization by methylation ("MPPZ"). MPPZ derivatives were separated and quantified by liquid chromatography tandem MS (LC-MS/MS) in positive electrospray ionization mode, using a QTrap 6500 + coupled to a Shimadzu Nexera X2. Separation was achieved using an ACE Excel 2 C18-PFP column (2 μm, 2.1 mm × 150 mm). The limits of quantification (LOQ) were 0.43-2.17 pg on column with a linear range from 2 or 10 - 2000 pg mL

Indexed as

Blood Chemical AnalysisChromatography, LiquidEstrogensHumansLimit of DetectionLinear ModelsPiperazineSolid Phase ExtractionTandem Mass SpectrometryEstrogensPiperazineDerivatizationEstrogenEstrogen metabolitesLiquid chromatography tandem mass spectrometryMethylpiperazine

Identifiers

PMID30712596
PMCPMC6363983
OpenAlexW2905808397

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.