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V Zitko

Publications and source records attributed to V Zitko.

At least 37 records · Page 2Linked to original sources

Excitatory amino acids toxicity in cerebellar granule cells in primary culture.

Primary cultures of cerebellar granule cells represent a valuable neuronal system for the study of the physiology, biochemistry and toxicology of excitatory amino acids. Using this system, we now report the characterization of the biochemical and toxicological action of a toxic mussels extract, containing the excitatory amino acid domoic acid. The results obtained using toxic mussels extract, non-toxic mussels extract and purified domoic acid, provide evidence for a synergistic action of domoic acid with other potentially neurotoxic excitatory amino acids, normally present in mussels.

Amino Acids↗

Composition of chlorinated dibenzodioxins and dibenzofurans in various samples.

The composition of chlorinated dibenzodioxins (CDD) and dibenzofurans (CDF) in terms of the degree of chlorination (tetra- to octachloro-) is displayed by principal components projection. Chlorinated dibenzodioxins and dibenzofurans with 4-6 chlorines are the main classes in samples of crabs and lobsters, CCD with 7 and 8 chlorines prevail in human samples. Chlorinated dibenzodioxins and dibenzofurans from incinerator ash are similar to those from human tissues. Those from gaseous incinerator emissions are enriched in less chlorinated classes and resemble residues isolated from conifer needles. Compositions of CDD and CDF in ambient air vary depending on both local and remote sources.

Air Pollutants↗

Graphical display of environmental quality criteria.

A graphical display of toxicity and exposure criteria for chemicals is described. The display is based on principal component analysis. Acceptable daily intake, highest intake limit, and other criteria of exposure to pesticides are used as examples. The display helps to detect similarities and differences in the data.

Biometry↗

Toxicity and pollution potential of thallium.

Toxicity and pollution potential of thallium are reviewed. Thallium is slightly more acutely toxic to mammals than mercury, and as acutely toxic as copper to fish. Its present industrial uses are too limited to generate pollution, but thallium, discharged in wastes from mines, ore-processing, and coal-burning plants, is contaminating the environment.

Animals↗