Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Ingemar Björkhem"'
Publikováno v:
Scopus-Elsevier
Cerebrotendinous xanthomatosis (CTX) is an autosomal recessive lipid-storage disease caused by mutations in the sterol 27-hydroxylase gene (CYP27). So far several mutations causing CTX have been identified and characterized. A new mutation creating a
Publikováno v:
Scopus-Elsevier
We describe a specific assay of 1,25-dihydroxy vitamin D3 in human serum, based on isotope dilution-mass fragmentography. We added [26-2H3]-1,25-dihydroxy vitamin D3 to a fixed amount of serum. The steroids were extracted with chloroform/methanol and
Publikováno v:
Scopus-Elsevier
This simple, rapid, sensitive kinetic bioluminescent method for the assay of bile acids in serum involves use of 3 alpha-hydroxysteroid dehydrogenase (EC 1.1.1.50) in combination with a new, commercially available NADH Monitoring Reagent (LKB-Wallac)
Publikováno v:
Scopus-Elsevier
We used four RIA kits for determination of plasma cortisol to assay 12 plasma samples in four laboratories, and compared the results with those obtained with a highly accurate method based on isotope dilution/mass spectrometry. All kits (Farmos, NEN,
Publikováno v:
Scopus-Elsevier
Autor:
Harry S. Hertz, J Mandel, Rolf Blomstrand, V E White, Ingemar Björkhem, Lorna T. Sniegoski, Robert Schaffer, Leif Svensson, Robert C. Paule, A. Cohen, Michael J. Welch
Publikováno v:
Scopus-Elsevier
Isotope dilution/mass spectrometric methods for total serum cholesterol, developed separately at the Karolinska Institutet (KI) and the National Bureau of Standards (NBS), were compared by applying them to a common set of serum pools. A search for th
Publikováno v:
Scopus-Elsevier
Concentrations of creatinine, as determined in serum by a method involving the combined use of creatinine amidohydrolase (EC 3.5.2.10) and alkaline sodium picrate were found to be factitiously low, owing to a reversal of the enzyme reaction. This eff
Publikováno v:
Acta Endocrinologica. 71:569-588
The metabolism of [4-14C] dehydroepiandrosterone*, [4-14C] pregnenolone, [4-14C] androstenedione, [4-14C] testosterone and [4-14C] progesterone in microsomal preparations of human liver has been studied. [4-14C] Dehydroepiandrosterone with NADPH as c
Autor:
O. Falk, A Bergman, Anders Kallner, Leif Svensson, Rolf Blomstrand, Olle Lantto, Ingemar Björkhem, E Akerlöf
Publikováno v:
Clinical Chemistry. 27:733-735
Serum from patients was pooled, filtered, dispensed, and frozen. This pooled specimen was used for accuracy control in 64 participating laboratories in Sweden. Mean values ("state-of-the-art" values) were obtained for creatinine, cholesterol, glucose
Publikováno v:
Scopus-Elsevier