Phorate induced oxidative stress, DNA damage and differential expression of p53, apaf-1 and cat genes in fish, Channa punctatus (Bloch, 1793)

Chemosphere
Arun RatnSunil P Trivedi

Abstract

The present study was conducted to assess the in-vivo activities of certain molecular biomarkers under the impact of phorate exposure. Fish, Channa punctatus (35 ± 3.0 g; 14.5 ± 1.0 cm; Actinopterygii) were subjected to semi-static conditions having 5% (0.0375 mg/L for T1 group) and 10% of 96 h-LC50 (0.075 mg/L for T2 group) of phorate exposure for 15 and 30 d. The oxidative stress was assessed in terms of superoxide dismutase (SOD) and catalase (CAT) activities. DNA damage was measured as induction of micronuclei (MN) and consequent differential expression of apoptotic genes-tumor suppressor (p53), apoptotic peptidase activating factor-1 (apaf-1) and catalase (cat) in liver and kidney, two major sites of biotransformation in fish, were quantified. Our findings reveal significant (p < 0.001) augmentations in SOD and CAT activities of liver and kidney tissues. MN frequency in erythrocytes of fish also increases significantly (p < 0.05) in a dose- and time-dependent manner. The mRNA level of p53 increased significantly (p < 0.05) in liver at 10% of 96 h-LC50 of phorate exposure after 30 d suggesting generation of stress due to accumulation of reactive oxygen species (ROS). Eventually, these findings decipher the dual role of ROS ...Continue Reading

Citations

Jan 19, 2018·International Journal of Environmental Research and Public Health·Xin LiChunyan Zhao
May 17, 2019·The Kaohsiung Journal of Medical Sciences·Rui Han, Xin-Yi Chen
May 3, 2019·Biological Trace Element Research·Manoj KumarSunil P Trivedi
Oct 28, 2019·Comparative Biochemistry and Physiology. Toxicology & Pharmacology : CBP·Parmita BhattacharjeeSuchismita Das
Feb 4, 2019·Ecotoxicology and Environmental Safety·L JacquinS Jean
Jun 5, 2018·Journal of Agricultural and Food Chemistry·Xingren PanXiaofei Dong

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