Publication details
Efekty expozice sinicové biomasy u křepelky japonské (Coturnix coturnix japonica)
| Title in English | viz. česky |
|---|---|
| Authors | |
| Year of publication | 2006 |
| Type | Article in Proceedings |
| Conference | Študentská vedecká konferencia - Zborník recenzovaných príspevkoch |
| MU Faculty or unit | |
| Citation | |
| Field | Environment influence on health |
| Keywords | cyanobacteria; microcystin-LR; Avian dietary toxicity test; oxidative responses; lipid peroxidation |
| Description | The contamination of surface water, especially its eutrophization, is a general problem which countenances the growth of ineligible organisms and the rise of primary production conjoined with the mass development of cyanobacteria producing wide spectra of harmful compounds inclusive of cyanotoxins. Cyanotoxins are products of the secondary cyanobacteria metabolism with dermatotoxic, hepatotoxic and neurotoxic effects on ambient organisms. These products of algae and cyanobacteria are global proposition recently, many adverse effects on mammals, birds and fishes were observed. Cyanotoxins were signed as a potential stress and health risk factor in the aquatic environment. Microcystines are cyclic heptapeptides, the general group of cyanotoxins, are spread into the aquatic medium in the course of the bloom lyses and can contact wide spectra of aquatic organisms inclusive of invertebrates, fishes and water vegetation. The modulation of acetylcholinesterase activity was observed in case of indefinite bird death linked with theoretical exposure to cyanobacteria Anabaena flos aque from eutrophic lake. The high content of hepatotoxic and neurotoxic cyanotoxins was determined in stomach of flamingos in frame of pathoneurologic observation of wild bird poisoning. The intoxication was evidently due to drinking of water with high cyanobacteria level. The reactive oxygen species activating some antioxidative enzymes like superoxide dismutase and glutathione ascorbate pathway enzymes originate during the biotransformation process of toxin removing. The hyperoxigenation and oxidative stress induction connected with growth of lipid peroxidation and detoxification enzyme activity was observed after exposure to cyanobacteria on fishes, plants and invertebrates. This research is focused on the determination of oxidative stress markers (lipid peroxidation) and antioxidative responses (GSH, GPx, GR) after exposure of Japanese quail (Coturnix coturnix japonica) to cyanobacteria in drinking water. |
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