Mortality of embryos, developmental disorders and changes in biochemical parameters in marsh frog (Rana ridibunda) tadpoles exposed to the water-soluble fraction of Kazakhstan crude oil and O-Xylene
| Autor: | Leila Sutuyeva, Vance L. Trudeau, T. M. Shalakhmetova |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Marsh
Health Toxicology and Mutagenesis 0211 other engineering and technologies Fraction (chemistry) 02 engineering and technology Xylenes 010501 environmental sciences Toxicology 01 natural sciences chemistry.chemical_compound Animals Food science Oil field Rana ridibunda 0105 earth and related environmental sciences 021110 strategic defence & security studies geography geography.geographical_feature_category Chemistry Embryo o-Xylene Environmental Exposure Crude oil Water soluble fraction Kazakhstan Petroleum Larva Water Pollutants Chemical |
| Zdroj: | Journal of Toxicology and Environmental Health, Part A. 82:200-215 |
| ISSN: | 1087-2620 1528-7394 |
| DOI: | 10.1080/15287394.2019.1576562 |
| Popis: | The effects of different concentrations of water-soluble fraction of crude oil (WSFO) from the Zhanazhol oil field (Aktobe region, Kazakhstan) and compared to o-xylene, prevalent in this oil, on growth and development of marsh frog (Rana ridibunda) were assessed. In subchronic experiments (7 d), a dose-related increase in mortality and incidence of deformities in embryos were observed. In chronic experiments (60 d; starting from the Gosner stage 26), a dose-dependent decrease in body weight, size and developmental delay by 3-4 stages were also detected. In addition, the content of lipid hyperoxide (LHO) and malondialdehyde (MDA), as well as activities of superoxide dismutase (SOD) and catalase (CAT) enzymes in liver of the tadpoles were determined at the end of chronic experiment. Exposure to 0.5 mg/L or 1.5 mg/L WSFO elevated the content of LHO by 76% and 86%, and MDA by 47% and 58% but decreased SOD activity by 26% and 49%, and CAT by 35% and 46%, respectively. A less pronounced adverse effect was found after chronic exposure to the same concentrations of o-xylene. In tadpole liver exposed to o-xylene levels of LHO was increased by 40% and 51%, MDA by 11% and 29%, while the activity of SOD was lowered by 18% and 41%, and CAT - by 13% and 37% in the 0.5 mg/L and 1.5 mg/L treatment groups, respectively. Data demonstrated the embryotoxic and teratogenic effects attributed to WSFO and o-xylene exposure which may involve oxidative stress mechanisms. |
| Databáze: | OpenAIRE |
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