We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Effects of low salinity stress on the antioxidant enzyme activities in juvenile Pampus argenteus liver and the APTase activities in its gill and kidney.
- Authors
YIN Fei; SUN Peng; PENG Shi-ming; SHI Zhao-hong
- Abstract
By decreasing water salinity gradually, the Pampus argenteus juveniles were cultured at water salinity 25, 20, 15 and 10 , for 24 h, 48 h, 96 h and 120 h, respectively, with the activities of superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPX), glutathione鄄S-transferase (GST), and glutathione reductase (GR) in liver and the activities of Na+ / K+鄄and Ga2+ / Mg2+鄄ATPase in gill and kidney determined. With the lowering of water salinity and the elongation of treated time, the liver SOD and GST activities had a trend of decreasing after an initial increase (P<0郾05), while the CAT activity was lower than the control except that it had a slight increase at salinity 20 cultured for 24 h and at salinity 15 cultured for 48 h (P<0郾05). The liver GPX activity had an increasing trend (P<0郾05), while the GR activity at salinity 15 cultured for 24 h increased first and then fell down to a relatively low level (P<0郾05). The Na+ / K+鄄and Ga2+ / Mg2+鄄ATPase activities in the gill and kidney also decreased after an initial increase (P<0郾05), only the increase of ATPase activity at the thresholds of water salinity and treated time differed between the two organs. The results indicated that the decrease of water salinity could effectively stimulate and enhance the antioxidant enzyme activities in juvenile P. argenteus liver and the ATPase activities in its gill and kidney, and thereby, could effectively eliminate the excessive reactive oxygen species (ROS), sustain the intracellular homeostasis, and minimize the body damage. However, characterized by certain specificity and time sequentiality, the activation of test enzymes could also be inhibited when the salinity varied beyond the tolerance range of the body.
- Subjects
SALINITY; GILLS; TREATMENT of fish diseases; ANTIOXIDANTS; ADENOSINE triphosphatase; SUPEROXIDE dismutase; CATALASE; GLUTATHIONE transferase
- Publication
Yingyong Shengtai Xuebao, 2011, Vol 22, Issue 4, p1059
- ISSN
1001-9332
- Publication type
Article