Zobrazeno 1 - 10
of 199
pro vyhledávání: '"Bg Wolthers"'
Publikováno v:
Journal of Lipid Research, Vol 32, Iss 4, Pp 603-612 (1991)
The sterol composition of sera from patients with cerebrotendinous xanthomatosis (CTX) was investigated by gas chromatographic analysis of saponified extracts, using a polar (CP Wax 52CB) and an apolar (CP Sil 5CB) capillary column. Apart from alread
Externí odkaz:
https://doaj.org/article/4084e649f13c4435b0072665ba36f40c
Autor:
P de Peinder, Dorine W. Swinkels, M M J Joosting, S Donkervoort, Bg Wolthers, M T W Hofs, Marcel Volmer, H A M Voorbij, B S Jakobs
Publikováno v:
Annals of Clinical Biochemistry, 37, 343-349. SAGE Publications Inc.
Current techniques used in clinical laboratories for faecal fat determination, such as the Van de Kamer method, are not very accurate or precise. This became apparent when results obtained by different laboratories were compared, and could explain th
Autor:
I. Bos-Zuur, Bg Wolthers, G.Brutel de la Rivière, P.H.B. Willemse, G.T. Nagel, L.D. Dikkeschei, D.A. van der Kolk
Publikováno v:
Journal of steroid biochemistry and molecular biology, 59(3-4), 305-313. PERGAMON-ELSEVIER SCIENCE LTD
The tritium water release assay, originally described for the analysis of aromatase activity in placental tissue, was used to estimate aromatase activity in breast tissue samples. The lower activity in this tissue necessitates longer incubation times
Autor:
Hg Kreeftenberg, [No Value] Huizenga, Kt Velde, Bg Wolthers, Gjj Beukeveld, Folkert Kuipers, Cma Bijleveld
Publikováno v:
cclm. 33:453-464
The Enterotest string test is an easy and non-invasive method for sampling duodenal fluid, which has been successfully used for the analysis of duodenal microflora, as well as biliary bile acid and lipid composition. The method was evaluated for dete
Autor:
W. Van Der Slik, P. M. J. Coenegracht, H. J. Metting, T. H. Y. De Haan, Bg Wolthers, Marcel Volmer
Publikováno v:
Clinical Chemistry. 40:1692-1697
Infrared (IR) spectroscopy is used to analyze urinary calculus (renal stone) constituents. However, interpretation of IR spectra for quantifying urinary calculus constituents in mixtures is difficult, requiring expert knowledge by trained technicians
Publikováno v:
Clinical Endocrinology. 39:475-482
Summary OBJECTIVES We evaluated the role of delta-5-androste-nediol (adiol) and its sulphates in health and endocrine diseases. DESIGN Serum and urine samples from healthy adult men and pre and post-menopausal women were analysed by gas chromatograph
Publikováno v:
Clinical Chemistry. 39:948-954
Quantitative assessment of urinary calculus (renal stone) constituents by infrared analysis (IR) is hampered by the need of expert knowledge for spectrum interpretation. Our laboratory performed a computerized search of several libraries, containing
Publikováno v:
The Journal of Steroid Biochemistry and Molecular Biology. 38:489-496
[1,2,3,4-C-13]cortisol was i.v. administered to two sisters aged 11 yr (patient I) and 3 yr (patient II) who suffer from 17-alpha-hydroxylase deficiency. This is the first time that the cortisol production rate (CPR) in patients with 17-alpha-hydroxy
Diurnal changes in plasma levels of 2-pyrrolidinone determined by isotope dilution mass spectrometry
Publikováno v:
Journal of Chromatography A. 550:239-245
A new capillary gas chromatographic method with mass spectrometric detection for the determination of 2-pyrrolidinone was developed. Using quantification based on stable isotope dilution mass spectrometry by monitoring selected ions in the ammonia ch
Autor:
Phb Willemse, W. Van Der Slik, G.T. Nagel, D.Th. Sleijfer, L.D. Dikkeschei, Bg Wolthers, A. W. de Ruyter-Buitenhuis
Publikováno v:
Journal of Chromatography B: Biomedical Sciences and Applications. 529:145-154
A reversed-phase high-performance liquid chromatographic method with ultraviolet detection of megestrol acetate and cyproterone acetate in human sera is described. The proposed assay is linear up to 1400 ng/ml (r = 0.999) and has a detection limit of