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Alkylphenol ethoxylates and alkylphenols – update information on occurrence, fate and toxicity in aquatic environment

100%

Kovarova J., Blahova J., Divisova L., Svobodova Z.

Polish Journal of Veterinary Sciences

2013

tom 16

nr 4

Alkylphenols and their precursors, alkylphenol etoxylates, are a group of manmade chemicals used mainly as surfactants in domestic and industrial applications worldwide. It has been well established that they have endocrine disruption activity, hepatotoxic, genotoxic and other negative effects on animal and human health. In spite of the effort to reduce their use, they persist in the environment not only in industrial but also in remote regions, and were detected in the variety of natural matrices including air, water, soil as well as food products, and human blood and urine worldwide. This article summarizes their occurrence, fate in natural conditions, and toxicity including mode of action. A subject of our concern was the aquatic environment as the most important reservoir and target of their deleterious impact.

Recovery ability of common carp (Cyprinus carpio) after a short-term exposure to terbuthylazine

64%

Mikulikova I., Modra H., Blahova J., Kruzikova K., Marsalek P., Marsalek P., Bedanova I., Svobodova Z.

Polish Journal of Veterinary Sciences

2013

tom 16

nr 1

Effects of a high terbuthylazine concentration (3.3 mg/l) on Cyprinus carpio were studied using a commercial herbicide formulation Click 500 SC (terbuthylazine 500 g/l). The fish were exposed to the pesticide for 24 h and allowed to recover for 6 days. Biometric parameters, plasma biochemical parameters and biomarkers of oxidative stress as well as histopathological changes in selected tissues were assessed on day 1 and 7. After a 24-h exposure, there were significant alterations found in the activities of alanine aminotransferase (ALT) and aspartate aminotransferase (AST) as well as in the plasma concentrations of glucose, natrium, chlorides, calcium and phosphorus. Hepatosomatic index, plasma albumin and lactate reflected the treatment with a delay. Ion levels and ALT were found to be restored after a 6-day recovery period, which was too short for AST activity and glucose to diminish to the control levels. The histopathological examination revealed disorders in the gills of the exposed fish, however, the changes were not detected after a 6-day recovery period. The study shows high regeneration potential of the fish.

Effects of subchronic exposure to atrazine on zebrafish (Danio rerio)

51%

Plhalova L., Blahova J., Mikulikova I., Stepanova S., Dolezelova P., Praskova E., Marsalek P., Skoric M., Pistekova V., Bedanova I., Svobodova Z.

Polish Journal of Veterinary Sciences

2012

tom 15

nr 3

The aim of this study was to investigate the effects of subchronic exposure to atrazine on fish growth and the development of histopathological changes in selected organs (gill, kidney, liver) in Danio rerio. Juvenile growth tests were performed on D. rerio according to OECD method No. 215. For 28 days, fish at an initial age of 30 days were exposed to the environmental atrazine concentration commonly detected in Czech rivers (0.3 μg/L) and a range of sublethal concentrations of atrazine (3.0, 30.0 and 90.0 μg/L). The results showed decreasing growth rates and morphological changes in the liver (dystrophic lesions of hepatocytes) at 90.0 μg/L of atrazine. The environmental concentration of atrazine in Czech rivers did not have any effect on fish growth and development of histopathological changes in D. rerio. The value of NOEC was 30.0 μg/L and the value of LOEC was 90.0 μg/L.

Ograniczanie wyników

3 Polish Journal of Veterinary Sciences

3 Blahova J.

3 Svobodova Z.

2 Bedanova I.

2 Marsalek P.

2 Mikulikova I.

1 Divisova L.

1 Dolezelova P.

1 Kovarova J.

1 Kruzikova K.

1 Modra H.

1 Pistekova V.

1 Plhalova L.

1 Praskova E.

1 Skoric M.

1 Stepanova S.

2 2013

1 2012

Wyniki wyszukiwania

Alkylphenol ethoxylates and alkylphenols – update information on occurrence, fate and toxicity in aquatic environment

Recovery ability of common carp (Cyprinus carpio) after a short-term exposure to terbuthylazine

Effects of subchronic exposure to atrazine on zebrafish (Danio rerio)