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Measurement of a comprehensive sex steroid profile in rodent serum by high-sensitive gas chromatography-tandem mass spectrometry.

Journal article
Authors Maria E. Nilsson
Liesbeth Vandenput
Åsa Tivesten
Anna-Karin Norlén
Marie K Lagerquist
Sara H Windahl
Anna E Börjesson
Helen H. Farman
Matti Poutanen
Anna Benrick
Manuel Maliqueo
Elisabet Stener-Victorin
Henrik Ryberg
Claes Ohlsson
Published in Endocrinology
Volume 156
Issue 7
Pages 2492-502
ISSN 1945-7170
Publication year 2015
Published at Wallenberg Laboratory
Institute of Neuroscience and Physiology, Department of Physiology
Centre for Bone and Arthritis Research
Institute of Medicine, Department of Internal Medicine and Clinical Nutrition
Pages 2492-502
Language en
Links dx.doi.org/10.1210/en.2014-1890
https://gup.ub.gu.se/file/169985
Subject categories Endocrinology

Abstract

Accurate measurement of sex steroid concentrations in rodent serum is essential to evaluate mouse and rat models for sex steroid-related disorders. The aim of the present study was to develop a sensitive and specific gas chromatography-tandem mass spectrometry (GC-MS/MS) method to assess a comprehensive sex steroid profile in rodent serum. A major effort was invested in reaching an exceptionally high sensitivity for measuring serum estradiol concentrations. We established a GC-MS/MS assay with a lower limit of detection for estradiol, estrone, testosterone, dihydrotestosterone, progesterone, androstenedione and dehydroepiandrosterone of 0.3, 0.5, 4, 1.6, 8, 4 and 50 pg/ml, respectively, while the corresponding values for the lower limit of quantification were 0.5, 0.5, 8, 2.5, 74, 12 and 400 pg/ml, respectively. Calibration curves were linear, intra- and inter-assay CVs were low and accuracy was excellent for all analytes. The established assay was used to accurately measure a comprehensive sex steroid profile in female rats and mice according to estrus cycle phase. In addition, we characterized the impact of age, sex, gonadectomy, and estradiol treatment on serum concentrations of these sex hormones in mice. In conclusion, we have established a highly sensitive and specific GC-MS/MS method to assess a comprehensive sex steroid profile in rodent serum in a single run. This GC-MS/MS assay has, to the best of our knowledge, the best detectability reported for estradiol. Our method therefore represents an ideal tool to characterize sex steroid metabolism in a variety of sex steroid-related rodent models and in human samples with low estradiol levels.

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Denna text är utskriven från följande webbsida:
http://www.gu.se/english/research/publication/?publicationId=215310
Utskriftsdatum: 2020-02-19