Influence of the polyphenolic tannic acid on the toxicity of the insecticide deltametihrin to fish. A comparative study examining both biochemical and cytopathological parameters.

Humics and pesticides are present in aquatic environment and the toxicological consequences of their chemical interaction is well studied. However, data concerning the mechanism of the biochemical action of humic-pesticide combinations are scarce, especially in vertebrates. Thus we have chosen to study the in vivo effects of the plant polyphenolic tannic acid and the pyrethroid insecticide deltamethrin [Decis] alone or in combination on hepatic xenobiotic-metabolizing enzyme activities and the associated redox-parameters in carp, as the complex assessment of these systems are regarded to serve as a relevant biomarker of environmental pollution.

Comparative study of the xenobiotic metabolising system in the digestive gland of the bivalve molluscs in different aquatic ecosystems and in aquaria experiments.

A comparative study has been performed on populations of Unionidae from the Lake Suszek and Brda river situated in the centre of Tucholski Landscape Park, around which there are no factories and the Pilica river--affected by the influence of the nearby town agglomeration. Mussels collected from Suszek were also treated (72 h) with various concentrations of dichlorophenol (DCP; 0.1, 0.

In vivo and in vitro effects of deltamethrin on cytochrome P450 monooxygenase activity in carp (Cyprinus carpio L) liver.

The in vivo and in vitro effects of the insecticide deltamethrin (DM) on hepatic cytochrome P450 (Cyt P450) monooxygenase were examined in adult carp. The in vivo experiments were carried out with 0.2 microgram/l DM at 20 degrees C.

Effects of paraquat treatment on fish transaminase molecular subforms.

The effects of paraquat (PQ; 1,1'-dimethyl-4,4'-bipyridylium dichloride) treatment were investigated in carp, silver carp and wels. The serum glutamic-oxalacetic transaminase (GOT; L-aspartate: 2-oxoglutarate aminotransferase, EC 2.6.