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

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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 E1, E2, E3, 16α-OHE1, and 2-OHE1 were very high (r = 0.72–0.91), and absolute concentrations also agreed (<5% difference for E1, E2, E3, 16α-OHE1). 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.

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Acknowledgments

We thank Jennifer F. Lai (University of Hawaii Cancer Center) for the skillful assistance with manuscript preparations. Support for this study was obtained by grants from the National Cancer Institute R01 CA 80843 and P30 CA71789 and from the National Center for Research Resources S10 RR020890.

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Authors and Affiliations

  1. University of Hawaii Cancer Center, Clinical Sciences Program, 1236 Lauhala Street, Honolulu, HI, 96813, USA

    Adrian A. Franke & Laurie J. Custer

  2. University of Hawaii Cancer Center, Epidemiology Program, Honolulu, HI, 96813, USA

    Yukiko Morimoto & Gertraud Maskarinec

  3. Rhein Consulting Laboratories, Portland, OR, 97225, USA

    Frank J. Nordt

Authors
  1. Adrian A. Franke
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  2. Laurie J. Custer
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  3. Yukiko Morimoto
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  4. Frank J. Nordt
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  5. Gertraud Maskarinec
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Correspondence to Adrian A. Franke.

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Franke, A.A., Custer, L.J., Morimoto, Y. et al. Analysis of urinary estrogens, their oxidized metabolites, and other endogenous steroids by benchtop orbitrap LCMS versus traditional quadrupole GCMS. Anal Bioanal Chem 401, 1319–1330 (2011). https://doi.org/10.1007/s00216-011-5164-3

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  • DOI: https://doi.org/10.1007/s00216-011-5164-3

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