RAVINDER ANAND-IVELL RAVINDER.ANAND-IVELL@NOTTINGHAM.AC.UK
Associate Professor
Development and validation of a mass spectrometry-based assay for quantification of insulin-like factor 3 in human serum
Anand-Ivell, Ravinder; Frederiksen, Hanne; Juul, Anders; Andersson, Anna-Maria; Albrethsen, Jacob; Nordkap, Loa; Kirstine Bang, Anne; J�rgensen, Niels
Authors
Hanne Frederiksen
Anders Juul
Anna-Maria Andersson
Jacob Albrethsen
Loa Nordkap
Anne Kirstine Bang
Niels J�rgensen
Abstract
BACKGROUND:
The circulating level of the peptide hormone insulin-like factor 3 (INSL3) is a promising diagnostic marker reflecting Leydig cell function in the male. Few commercial immunoassays of varying quality exist. Therefore, we decided to develop and validate a precise method for quantification of INSL3 by mass spectrometry.
METHODS:
We developed an assay in which the INSL3 A-chain is released from the INSL3 A-B heterodimer by chemical reduction and alkylation. The alkylated INSL3 A-chain is quantitated by liquid chromatography-tandem mass spectrometry (LC-MS/MS), as substitute for serum INSL3. The method was compared to a validated and sensitive in-house serum INSL3 immunoassay using 97 serum samples from 12 healthy boys during pubertal transition. Adult levels were determined based on sera from 72 adult healthy males aged 18-40 years.
RESULTS:
An LC-MS/MS assay with limit of detection and limit of quantification (LOQ) of 0.06 and 0.15 ng/mL, respectively, and intra-assay CVs
Citation
Anand-Ivell, R., Frederiksen, H., Juul, A., Andersson, A., Albrethsen, J., Nordkap, L., …Jørgensen, N. (2018). Development and validation of a mass spectrometry-based assay for quantification of insulin-like factor 3 in human serum. Clinical Chemistry and Laboratory Medicine, 56(11), https://doi.org/10.1515/cclm-2018-0171
Journal Article Type | Article |
---|---|
Acceptance Date | May 3, 2018 |
Online Publication Date | May 30, 2018 |
Publication Date | May 30, 2018 |
Deposit Date | Jun 1, 2018 |
Publicly Available Date | May 31, 2019 |
Journal | Clinical Chemistry and Laboratory Medicine |
Print ISSN | 1434-6621 |
Electronic ISSN | 1437-4331 |
Publisher | De Gruyter |
Peer Reviewed | Peer Reviewed |
Volume | 56 |
Issue | 11 |
DOI | https://doi.org/10.1515/cclm-2018-0171 |
Keywords | assay development; insulin-like factor 3 (INSL3); mass spectrometry |
Public URL | https://nottingham-repository.worktribe.com/output/934420 |
Publisher URL | https://www.degruyter.com/view/j/cclm.2018.56.issue-11/cclm-2018-0171/cclm-2018-0171.xml |
Files
INSL3 method paper LCMS 2018.pdf
(638 Kb)
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Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf
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