Oxidative stress and genotoxicity biomarker responses in tilapia (Oreochromis niloticus) exposed to environmental concentration of 1-nitropyrene

被引：18

作者：

Bacolod, Eugene T. ^{[1
]}

Uno, Seiichi ^{[2
]}

Villamor, Shiela S. ^{[2
]}

Koyama, Jiro ^{[2
]}

机构：

[1] Univ San Carlos, Sch Arts & Sci, Dept Chem, Cebu 6000, Philippines

[2] Kagoshima Univ, Fac Fisheries, Educ & Res Ctr Marine Resources & Environm, 4-50-20 Shimoarata, Kagoshima 8900056, Japan

来源：

MARINE POLLUTION BULLETIN | 2017年 / 124卷 / 02期

关键词：

NPAHs; Genotoxicity; Oxidative stress; Environmental pollution; 1-nitropyrene; DNA STRAND BREAKS; NUCLEAR ABNORMALITIES; LIPID-PEROXIDATION; MARINE-ENVIRONMENT; AQUATIC ORGANISMS; MICRONUCLEUS TEST; MILL EFFLUENT; WATER; PROTEINS; DAMAGE;

D O I：

10.1016/j.marpolbul.2017.01.077

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The present study aimed to assess whether environmental 1-nitropyrene (1-NP) concentration will induce genotoxicity and oxidative damages in tilapia, lives in estuarine and brackish water. Tilapia were exposed to waterborne 1-NP. Cellular antioxidant enzyme activity of glutathione peroxidase and oxidative damage, i.e., lipid peroxidation, protein and DNA oxidation were used as biomarkers of oxidative stress, while the micronucleus test was used for evaluation of chromosomal damage and was used as an indication of genotoxicity. Results showed that all biomarkers for oxidative stress positively responded, and micronucleus and other nuclear abnormalities frequencies significantly increased (p < 0.001). This study showed that environmentally relevant 1-NP concentration in test water (0.15 ng/L) and in fish (3 ng/kg) induced genotoxicity, and oxidative stress. Micronuclei and other nuclear abnormalities were probably formed as a result of oxidative stress. In conclusion, exposure to lower waterborne 1-NP concentration can pose a risk to freshwater and estuarine organisms through accumulation. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：786 / 791

页数：6

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