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Gene expression profiling in liver of zebrafish exposed to ethylhexyl methoxycinnamate and its photoproducts

مؤلف البحث
Bojan Nataraj, Kannan Maharajan, Guilherme Malafaia, Devan Hemalatha, Mohamed Ahmed Ibrahim Ahmed, Mathan Ramesh
ملخص البحث

In recent decades, the ecotoxicological potential of organic ultraviolet filters (OU-VFs) has received growing attention. However, the toxicity of its photoproducts or transformation products on freshwater vertebrates has been little explored. Therefore, the aim of the present study is to evaluate the possible adverse effects of ethylhexyl methoxycinnamate (EHMC) and its photoproducts [2-ethylhexanol (2-EH) and 4-methoxybenzaldehyde (4-MBA)] on the expression of stress-responsive and antioxidant genes. For this, zebrafish (Danio rerio) adults were exposed to pollutants at an environmentally relevant concentration (3 μg/L) and evaluated after 7, 14, and 21 days of exposure. The results of the principal component analysis (PCA) and two-way repeated measures (RM) ANOVA revealed that EHMC, 2-EH, and 4-MBA exposure caused significant downregulation of the genes hsp70nrf2cyp1aahrsod1sod2catgstp1gpx1agss, and gsr (on all trial days) in the liver of the animals. On the other hand, taken together, our data did not show significant differences between the effects induced by EHMC and its photoproducts. The genes evaluated in the present study play a major role in regulating the defensive antioxidant response against EHMC and its photoproducts. Additionally, our study provides an insight into the mechanisms of those OU-VFs in freshwater fish.

تاريخ البحث
قسم البحث
مجلة البحث
Science of The Total Environment
المشارك في البحث
الناشر
Elsevier
تصنيف البحث
International
عدد البحث
826
موقع البحث
https://www.sciencedirect.com/science/article/abs/pii/S004896972201138X
سنة البحث
2022
صفحات البحث
154046