Effects of cadmium exposure on antioxidant enzymes and histological changes in the mud shrimp Austinogebia edulis (Crustacea: Decapoda)

The trace metal cadmium (Cd) is a toxic pollutant known to induce oxidative stress and other sublethal to lethal effects on aquatic organisms. We exposed the marine mud shrimp Austinogebia edulis to Cd concentrations of 0, 0.5, and 5 mg/kg for up to 4 days (24, 48, 72, 96 h). We studied the activity...

Full description

Saved in:

Bibliographic Details
Published in:	Environmental science and pollution research international 2019-03, Vol.26 (8), p.7752-7762
Main Authors:	Das, Shagnika, Tseng, Li-Chun, Chou, Chi, Wang, Lan, Souissi, Sami, Hwang, Jiang-Shiou
Format:	Article
Language:	eng
Subjects:	Animals Antioxidants Aquatic organisms Aquatic Pollution Atmospheric Protection/Air Quality Control/Air Pollution Basal lamina Cadmium Cadmium - analysis Cadmium - toxicity Decapoda Decapoda - physiology Earth and Environmental Science Ecotoxicology Environment Environmental Chemistry Environmental Health Enzymes Epithelial cells Exposure Gills Glycogen Hepatopancreas Lethal effects Lipid peroxidation Lipids Mud Muscles Necrosis Organs Oxidation-Reduction Oxidative Stress Peroxidation Pollutants Reactive oxygen species Research Article Structural damage Superoxide Dismutase Toxicity Tests Trace Elements Waste Water Technology Water Management Water Pollutants, Chemical - toxicity Water Pollution Control
Online Access:	Get full text
Tags:	Add Tag No Tags, Be the first to tag this record!

Description
Summary:	The trace metal cadmium (Cd) is a toxic pollutant known to induce oxidative stress and other sublethal to lethal effects on aquatic organisms. We exposed the marine mud shrimp Austinogebia edulis to Cd concentrations of 0, 0.5, and 5 mg/kg for up to 4 days (24, 48, 72, 96 h). We studied the activity of antioxidant enzymes in the hepatopancreas, gill, and muscle of A. edulis. Antioxidant enzymes (SOD, CAT, and GPx) decreased with increasing Cd concentration and extended exposure time in these three organs of the mud shrimp A. edulis . Increasing Cd concentration led to an increase in ROS and resulted ultimately in membrane lipid peroxidation at higher Cd concentrations. Significant damage of the hepatopancreas of A. edulis was noticed at higher concentrations of Cd, showing damages like the disappearance of epithelial cell boundaries, detachment of cells from the basal lamina, cellular swelling, necrosis, and reduction of glycogen. In conclusion, Cd caused oxidative damage by reducing the activities of antioxidant enzymes and by damaging the tissue structure in major organs of the mud shrimp A. edulis .
ISSN:	0944-1344 1614-7499