Christian Schlatter

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The effects of the blue-green algae (cyanobacterial) toxin microcystin-LR on yearling rainbow trout were studied in a series of intraperitoneal injection tests, gavage trials and exposures to waterborne algae. Concentrations of the microcystin-producing algae Microcystis aeruginosa known to occur during algae blooms (8-16 mg freeze-dried algae/L, i.e.(More)
Pentachlorophenol (PCP) was given orally to three volunteers at single doses of 3.9, 4.5, 9, and 18.8 mg. Daily urinary excretion of PCP and PCP conjugated to glucuronic acid was monitored using gas chromatography with electron capture detection (GC/ECD). Based on first-order elimination kinetics an elimination half-life of 20 days was derived. To eliminate(More)
Nitro benzenoid musk compounds (Musk tibetene [CAS no. 145-39-1], Musk ambrette [83-66-9], Musk moskene [116-66-5], Musk ketone [81-14-1] and Musk xylene [81-15-2]) and non-nitro benzenoid musks (Celestolide [13171-00-1], Galaxolide [1222-05-5]) and Fixolide [1506-02-1] [21445-77-7] were analysed in 15 human adipose tissue samples from Switzerland by gas(More)
Di-(2-ethylhexyl)phthalate (DEHP) taken orally by two volunteers (30 mg each) was excreted in the urine to the extent of 11 and 15% of dose. After enzymic hydrolysis the urinary metabolites (derivatives of mono (2-ethylhexyl)phthalate) were methylated and identified by g.l.c.-mass spectrometry (C.I.), and the quantitative distribution of conjugated and free(More)
Workers in plants producing carbon anodes for aluminium electrolysis are exposed to PAHs containing coal tar pitch volatiles, pitch and coke. The aim of this study was to evaluate the suitability of urinary 1-hydroxypyrene to characterize respiratory exposure to PAH, which is most relevant for assessing individual health risks. Six workers in a carbon anode(More)
Ochratoxin A (OA) is a nephrotoxic and nephrocarcinogenic mycotoxin which is predominantly produced by the two ubiquitous fungal genera, Aspergillus and Penicillium. OA is found in foodstuffs, predominantly in cereals but also in coffee beans. Inconsistent results have been published regarding the influence of roasting on the OA content in roasted beans and(More)
The levels of the 2,3,7,8-chlorosubstituted PCDD/Fs (polychlorinated dibenzo-p-dioxins and dibenzofurans) were determined in eggs of foraging chicken and in the corresponding soils. Compared to eggs from hens kept without soil contact the determined levels were clearly elevated. These increased levels were attributed to soil related PCDD/F uptake and were(More)
Various substituted aniline derivatives were tested for genotoxicity in several short-term tests in order to examine the hypothesis that a substitution at both ortho positions (2,6-disubstitution) could prevent genotoxicity due to steric hindrance of an enzymatic activation to electrophilic intermediates. In the Salmonella/microsome assay,(More)
[6,7-3H] Estrone (E) and [6,7-3H]estradiol-17β (E2) have been synthesized by reduction of 6-dehydroestrone and 6-dehydroestradiol with tritium gas. Tritiated E and E2 were administered by oral gavage to female rats and to male and female hamsters on a dose level of about 300 μg/kg (54 mCi/kg). After 8 h, the liver was excised from the rats; liver and(More)