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1.
XU Wenju LI Yuanyou WU Qingyang WANG Shuqi ZHENG Huaiping LIU Wenhua 《环境科学学报(英文版)》2009,21(6):854-857
The effects of phenanthrene (Phe) on hepatosomatic index (HSI) and hepatic enzymatic activities in hybrid tilapia (Oreochromis
niloticus O. aureus ) were investigated via the static freshwater exposure at dosage of 50, 100, and 400 g/L for 4–14 d.
Compared with the control group, HSI was significantly decreased (P < 0.05) at 400 g/L at day 14. Increased enzymatic activities (P
< 0.05) were observed for catalase (CAT), glutathione peroxidase (GPx) and superoxide dismutase (SOD) at either 100 or 400 g/L at
day 8 and 14, as well as for CAT at 50 g/L at day 14, except for GPx at 400 g/L at day 8. Ethoxyresorufin O-deethylase (EROD)
activity was significantly increased (P < 0.05) at all dosage at day 4 as well as at 50 g/L at day 8, but significantly decreased at either
100 or 400 g/L at day 14 (P < 0.05). Glutathione-S-transferase (GST) activity was not a ected. The results suggest that CAT, GPx,
SOD and EROD, as well as HSI in tilapia may be used as the biomarkers or indexes for evaluating or monitoring the pollution of
polycyclic aromatic hydrocarbons (PAHs) such as Phe. 相似文献
2.
XU Wenju LI Yuanyou WU Qingyang WANG Shuqi ZHENG Huaiping LIU Wenhua 《环境科学学报(英文版)》2009,21(6):854-857
The effects of phenanthrene (Phe) on hepatosomatic index (HSI) and hepatic enzymatic activities in hybrid tilapia (Oreochromis niloticus ♀× O.aureus ♂) were investigated via the static freshwater exposure at dosage of 50,100 or 400 μg/L for 4-14 d.Compared with the control group,HSI was significantly decreased (P<0.05) at 400 μg/L at day 14.Increased enzymatic activities (P<0.05) were observed for catalase (CAT),glutathione peroxidase μgPx) and superoxide dismutase (SOD) at either 100 or 400 μg/L at day 8 and 14,as well as for CAT at 50 μg/L at day 14,except for GPx at 400 μg/L at day 8.Ethoxyresorufin O-deethylase (EROD) activity was significantly increased (P<0.05) at all dosage at day 4 as well as at 50 μg/L at day 8,but significantly decreased at either 100 or 400 μg/L at day 14 (P<0.05).Glutathione-S-transferase μgST) activity was not affected.The results suggest that CAT,GPx,SOD and EROD,as well as HSI in tilapia may be used as the biomarkers or indexes for evaluating or monitoring the pollution of polycyclic aromatic hydrocarbons (PAHs) such as Phe. 相似文献
3.
The present study tested the sensitivity of Salaria basilisca to water-cadmium (Cd) contamination. For this purpose, liver somatic
index (LSI), Cd concentrations and the activities of antioxidant enzymes such as catalase (CAT), superoxide dismutase (SOD) and
glutathione peroxidase (GSH-Px) were measured in the liver of S. basilisca exposed to Cd-contaminated water (2 mg Cd/L as CdCl2)
for 14 and 28 d. The results showed that the LSI decreased significantly after 14 and 28 d of Cd-exposure. Cd bioaccumulation in the
liver resulted in an increasing uptake up to 42 g/g dry weight after 28 d of exposure. Activities of CAT and SOD were significantly
increased with increasing exposure time. A significant increase in GSH-Px activity, under Cd influence, was observed during 14-day
exposure period (p < 0.0001). However, a significant decrease (p < 0.05) in this activity with respect to control fish was registered
after 28 d of Cd-exposure. These results showed that Cd accumulation in the liver of S. basilisca could induce oxidative stress as
demonstrated by changes in the antioxidant enzyme activities. Results also emphasized that S. basilisca may considered as a sensitive
species to Cd exposure. 相似文献