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Gas Chromatography/Mass Spectrometry Characterization of Corticosteroid Metabolism in Human Immortalized Keratinocytes  Andrzej Slominski  Journal of.

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Presentation on theme: "Gas Chromatography/Mass Spectrometry Characterization of Corticosteroid Metabolism in Human Immortalized Keratinocytes  Andrzej Slominski  Journal of."— Presentation transcript:

1 Gas Chromatography/Mass Spectrometry Characterization of Corticosteroid Metabolism in Human Immortalized Keratinocytes  Andrzej Slominski  Journal of Investigative Dermatology  Volume 118, Issue 2, Pages (February 2002) DOI: /j x x Copyright © 2002 The Society for Investigative Dermatology, Inc Terms and Conditions

2 Figure 1 PROG and DOC metabolism. TLC separation of products of PROG (P4) and DOC metabolism in cultured human keratinocytes was done using the following solvents: methanol 6%/chloroform/water 0.01% (MEOH: CHL); acetone 20%/chloroform (ACETONE: CHL); and tetrahydrofuran 50%/chloroform (THF:CHL). Journal of Investigative Dermatology  , DOI: ( /j x x) Copyright © 2002 The Society for Investigative Dermatology, Inc Terms and Conditions

3 Figure 2 Mass spectra of the MOTMS derivatives of the steroids identified as (A) 3α,21-dihydroxy-5α-pregnan-20-one (3α,5α-THDOC) and (B) 3α,6,21-trihydroxy-5α-pregnan-20-one (6-hydroxyTHDOC). Insert: predicted structure of the compound. Journal of Investigative Dermatology  , DOI: ( /j x x) Copyright © 2002 The Society for Investigative Dermatology, Inc Terms and Conditions

4 Figure 3 Mass spectra of the MOTMS derivatives of the steroids identified as (A) 3 β,21-dihydroxy-5-pregnen-20-one (3 βΔ5-21-OHpregnenolone), (B) 3α,21-dihydroxy-5-pregnen-20-one (3αΔ5-21-OHpregnenolone), and (C) standard (authentic) 3β,21-dihydroxy-5-pregnen-20-one. Insert: predicted structure of the compound. Journal of Investigative Dermatology  , DOI: ( /j x x) Copyright © 2002 The Society for Investigative Dermatology, Inc Terms and Conditions

5 Figure 4 Proposed pathway for the metabolism of DOC in human keratinocytes. Journal of Investigative Dermatology  , DOI: ( /j x x) Copyright © 2002 The Society for Investigative Dermatology, Inc Terms and Conditions


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