Five doubly unsaturated metabolites of valproic acid in urine and plasma of patients on valproic acid therapy
The urine and plasma of epileptic patients receiving therapeutic doses of valproic acid (2-propyl- pentanoic acid) was found to contain five doubly unsaturated metabolites of valproic acid, which were identified as their trimethylsilyl derivatives by GC/MS. A series of reference substances was synth...
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| Hauptverfasser: | , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
1984
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| In: |
Journal of clinical chemistry and clinical biochemistry
Year: 1984, Jahrgang: 22, Heft: 4, Pages: 309-317 |
| DOI: | 10.1515/cclm.1984.22.4.309 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1515/cclm.1984.22.4.309
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| Verfasserangaben: | by W. Kochen, H.P. Sprunck, Klinik der Universität Heidelberg, Kinderklinik, B. Tauscher and M. Klemens, Organisch-Chemisches Institut der Universität Heidelberg |
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| 520 | |a The urine and plasma of epileptic patients receiving therapeutic doses of valproic acid (2-propyl- pentanoic acid) was found to contain five doubly unsaturated metabolites of valproic acid, which were identified as their trimethylsilyl derivatives by GC/MS. A series of reference substances was synthesized but only two of them were identical with native metabolites: 2(2-propenyl)-4-pentenoic acid (= 4.4'-diene) and E-2-propyl-2.4- pentadienoic acid (E-2.4-diene). The mass-spectra of the five native metabolites are given. Preliminary quantitative data obtained from four groups of patients indicate increased formation of doubly unsaturated metabolites when valproic acid-induced side-effects are present, and in cases of fatal hepatic failure. The 4.4'-diene has hitherto been found only in fatal cases with hepatic injury. Quantitative data are presented as % of the sum of valproic acid plus all its detected metabolites. | ||
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