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논문 기본 정보

자료유형
학술저널
저자정보
Oluchi Onyinyechi Ijomah (University of Lagos) Adeola Alex Adesuyi (University of Lagos) Kelechi Longinus Njoku (University of Lagos) Sikiru Abiola Ojokuku (Yaba College of Technology) Ugochukwu Donatus Moses (Yaba College of Technology) Oluwafunmilayo Omonike Adesuyi (University of Lagos)
저널정보
환경독성보건학회 Environmental Analysis Health and Toxicology Environmental Analysis Health and Toxicology Vol.35 No.4
발행연도
2020.12
수록면
8 - 18 (11page)

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Earthworms are the most abundant invertebrates in the soils and are permanently in close contact with soil particles. Therefore, they are significantly affected by the pollutants that reach the soil system. The study was aimed at evaluating the effect of exposure to crude oil contaminated soil on Eisenia fetida using cellular antioxidant enzymes and tissue organization as biomarkers. E. fetida were exposed to different concentrations of crude oil contamination of 1 mL, 2 mL. and 3 mL (0.25, 0.50 and 0.75%) for 14 days. The antioxidant/oxidant parameters were analysed in the muscle and liver tissues. The results showed that only the reduced glutathione (GSH) of earthworms exposed to 1 mL were not significant (p＞0.05) from the control, while the other concentrations (2 mL – 0.50% and 3 mL – 0.75%) were significantly different (p＜0.05) from the control. The activity of catalase (CAT) with respect to the total protein content was highest in the liver of earthworms exposed to 1 mL (0.25% conc.) on day 7 (51.84 μ㏖/㎎ pro) while the least CAT activity with respect to the total protein content was reported in the liver of control earthworms after 14 days (19.51 μ㏖/mL/min). A significant increase in the activity of superoxide dismutase at all the concentrations (0.25, 0.50 and 0.75%) after 14 days were also observed. Significant histopathological alterations were observed in E. fetida from the three concentrations. Severe disruptions in the arrangement of their body wall muscle layers, distorted internal viscera, as well as cellular degeneration, pigments, moderate to severe areas of lesion, and distortion of the shape of circular and longitudinal muscles, eroding of internal and external tissues leading to total destruction of body wall were observed. In conclusion, the study revealed that crude oil even at lower concentration induced biomarker responses in E. fetida such as higher levels of Malondialdehyde in E. fetida after exposure crude oil due its toxicity. Histopathological alterations such as cellular degeneration, moderate to severe areas of necrosis, areas of inflammation, inclusion bodies, pigments, and distortion of the shapes of circular and longitudinal muscles also showed the adverse impacts of crude oil pollution in the soils.
#Earthworm #crude oil #hydrocarbon #histopathology #Biomarker #E. fetida

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Abstract
Introduction
Materials and methods
Results and Discussion
Conclusions
References

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