Isotope dilution ammonia chemical ionization mass fragmentographic analysis of urinary 3-O-methylated catecholamine metabolites

Autor: Frits A. J. Muskiet, Ido P. Kema, Gerrie J. Stob, Gert Meiborg, Gijs T. Nagel

Publikováno v: Journal of Chromatography B: Biomedical Sciences and Applications. 617:181-189

We developed a method for simultaneous quantification of the urinary 3-O-methylated catecholamine metabolites 3-methoxytyramine, normetanephrine and metanephrine by stable isotope-dilution ammonia chemical ionization mass fragmentography. Prepurifica

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::90f8e3c24cd08b3e72161d8a7a7d3f5a
https://doi.org/10.1016/0378-4347(93)80486-n

The contribution of newly synthesized cholesterol to bile salt synthesis in rats quantified by mass isotopomer distribution analysis

Autor: Renze Boverhof, Frans Stellaard, Roel J. Vonk, Folkert Kuipers, Robert H. J. Bandsma, H Elzinga, Gijs T. Nagel, Marc K. Hellerstein, Pieter J. J. Sauer, Richard A. Neese

Publikováno v: Biochimica et biophysica acta-Molecular and cell biology of lipids, 1483(3), 343-351. ELSEVIER SCIENCE BV

A new stable isotope procedure has been developed and validated in rats, applying [1-C-13]acetate infusion to quantify the production of bile salts from de novo synthesized cholesterol making use of the mass isotopomer distribution analysis (MIDA) pr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::84b1b9820da9a6426c2f2e58946a7600
https://research.rug.nl/en/publications/6ffe7f34-880d-4e85-b941-bd7d5146ba75

Measurement of short-chain acyl-CoA dehydrogenase (SCAD) in cultured skin fibroblasts with hexanoyl-CoA as a competitive inhibitor to eliminate the contribution of medium-chain acyl-CoA dehydrogenase

Autor: Adrian C. Sewell, Ronald J.A. Wanders, H. S. A. Heymans, K. E. Niezen-Koning, Gijs T. Nagel

Publikováno v: University of Groningen
Clinica chimica acta; international journal of clinical chemistry, 229(1-2), 99-106. Elsevier
Clinica chimica acta, 229(1-2), 99-106. ELSEVIER SCIENCE BV

Short-chain acyl-CoA dehydrogenase (SCAD) deficiency has so far been reported in only very few patients. This is due, in part, to the problems involved in measuring the activity of SCAD unequivocally. The main reason for this difficulty is that butyr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5b646af65eecc7948987a9addb26f3af
https://pubmed.ncbi.nlm.nih.gov/7988059

Simultaneous determination of unconjugated homovanillic acid, vanilmandelic acid, and 3-methoxy-4-hydroxyphenylethylene glycol, in serum by mass fragmentography and deuterated internal standards

Autor: F A Muskiet, B.G. Wolthers, Gijs T. Nagel

Publikováno v: Analytical Biochemistry, 109(1), 130-136. ACADEMIC PRESS INC ELSEVIER SCIENCE

A mass fragmentographic method for the determination of unconjugated homovanillic acid, vanilmandelic acid, and 3-methoxy-4-hydroxyphenylethylene glycol in serum, using deuterated internal standards, is described. Reference values for normal healthy

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a2e47726f153466cdfa4028919c64448
https://doi.org/10.1016/0003-2697(80)90020-2

Mass fragmentographic identification of polyamine metabolites in the urine of normal persons and cancer patients, and its relevance to the use of polyamines as tumour markers

Autor: Gita A. van den Berg, Gijs T. Nagel, M. Ruud Halie, Frits A. J. Muskiet

Publikováno v: Journal of Chromatography B: Biomedical Sciences and Applications. 339:223-231

The mass fragmentographic identification of N-(2-carboxyethyl)-4-amino- n -butyric acid, N-(3-aminopropy])-N 1 -(2-carboxyethyl)-1,4-diaminobutane, N,N 1 -bis(2-carboxyethyl)-1,4-diaminobutane, and δ -aminovaleric acid in acid-hydrolysed urines of a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a364dfa920b6e58e8e99e73b0e09c963
https://doi.org/10.1016/s0378-4347(00)84649-6