Výsledky vyhledávání - "W. S. Guérand"

Simultaneous determination of concentrations and stable isotope enrichments of α-ketoisocaproic acid, leucine, phenylalanine and tyrosine in blood plasma by gas chromatography/negative ion mass spectrometry

Autor: R. M. Kok, L. van Toledo‐Eppinga, W. S. Guérand, Harrie N. Lafeber, Willem Kulik

Publikováno v: Journal of Mass Spectrometry. 30:1260-1266

A simple procedure for the extraction and derivatization of α-amino acids and α-keto acids from human plasma is described. This stable isotope dilution method permits the quantification of isotopic enrichment and concentrations of several α-keto a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::80f1efe52ae7a153b90a34c6dacf5186
https://doi.org/10.1002/jms.1190300908

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Stable isotope dilution analysis of GABA in CSF using simple solvent extraction and electron-capture negative-ion mass fragmentography

Autor: W. S. Guérand, David W. Howells, R. M. Kok, G. N. Thompson, C. Jakobs, C. C. M. van den Heuvel

Publikováno v: Journal of inherited metabolic disease. 16(3)

GABA plays an important role in various neurological and mental disorders, in which elevated as well as decreased concentrations of GABA in CSF may occur (Jaeken et al 1990; Jakobs et al 1993). Most methods for determining GABA in brain tissue lack t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6b2f94fa01a4f121ea1357f8fce8d44c
https://pubmed.ncbi.nlm.nih.gov/7541876

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