Zobrazeno 1 - 10
of 45
pro vyhledávání: '"H.J.G.M. Derks"'
Publikováno v:
Chemosphere. 28:711-715
A physiologically based pharmacokinetic (PB-PK) model for 2,3,7,8-TCDD in cows is described. Uptake in tissues appears to be blood flow limited except in adipose. Sensitive model parameters are fat tissue volume and bioavailability. The agreement bet
Autor:
D. P. K. H. Pereboom-De Fauw, K. Groen, P. Besamusca, G. J. A. Speijers, P. K. Beekhof, H.J.G.M. Derks
Publikováno v:
Xenobiotica. 23:995-1005
1. The toxicokinetics of [3H]-α-solanine after oral (p.o.) and intravenous (i.v.) administration in rat and hamster were studied, in order to decide which is the most appropriate model in risk assessment studies. The i.v. Dose was 54 βg/kg; the ora
Publikováno v:
Chemosphere. 23:1377-1385
Eight 13 C-labelled PCDD's and PCDF's dissolved in olive oil were administered intraruminally to four lactating cows as a single dose. Milk and body fat concentrations were monitored for 93 days. Mean elimination half lifes of most congeners varied f
Publikováno v:
Chemosphere. 31(8)
To estimate congener-specific bioavailabilities for 17 PCDD/Fs in cows grazing near a MSW incinerator both a controlled lab study and a field study were performed: In the lab study the estimates were derived from the elevated concentrations in milk f
Publikováno v:
International Journal of Biochemistry. 17:839-842
1. 1. Intraperitoneal injection of the phosphodiesterase inhibitor, 3-isobutyl-1-methylxanthine (IBMX), resulted in a rapid and transient induction of rat hepatic ornithine decarboxylase (ODC) activity. Maximal activity was found about 5 hr after app
Publikováno v:
Journal of Chromatography A. 370:173-178
An improved method for the determination of 6-acetylmorphine in the urine of drug addicts receiving morphine was developed. A newly introduced reversed-phase high-performance liquid chromatographic system proved to be more sensitive than a normal-pha
Publikováno v:
Analytical Biochemistry. 73:391-396
A simple and inexpensive technique for the monitoring of radioactive compounds in gas chromatographic effluent is described. Use has been made of the adsorption properties of thin layer chromatography plates to trap eluting radioactive peaks. Perform
Publikováno v:
Carcinogenesis. 5:225-229
A single i.p. injection of 12-O-tetradecanoylphorbol-13-acetate (TPA) induced a transient increase in the levels of rat liver putrescine, spermidine and spermine. These polyamine concentrations continuously increased until 6 h, immediately following
Publikováno v:
Analytica Chimica Acta. 170:13-20
A sensitive method is described for the determination of 6-acetylmorphine in urine, to detect the use of heroin by drug addicts participating in a morphine-dispensing experiment. The method is based on an extraction procedure, reaction of the isolate
Publikováno v:
Human Toxicology. 3:7-21
1 Urine was collected from 289 inhabitants of a cadmium-polluted quarter of Stadskanaal. The excretion of cadmium, protein, beta-2-microglobulin and glucose were determined. After being divided according to sex and to smoking habits, the results of t