title: Effects of cadmium exposure on digestive enzymes, antioxidant enzymes, and lipid peroxidation in the freshwater crab Sinopotamon henanense.
abstract: In this study, the effects of cadmium (Cd) stress on the activities of disaccharidases (sucrase, lactase, and maltase), amylase, trypsin, pepsase, superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx), and malondialdehyde (MDA) content in the alimentary system of freshwater crabs Sinopotamon henanense were studied. Results showed that the enzyme activities in the stomach, intestine, and hepatopancreas changed with Cd concentration. In terms of digestive enzymes, Cd exposure had an inhibitory effect on the activities of the disaccharidases, amylase, and pepsase (only in the stomach). Significant induction of trypsin activity by Cd at a lower concentration was observed, but as Cd concentration increased, trypsin activity decreased. Maltase activity showed a slight recovery after inhibition by Cd. The activities of SOD and CAT increased initially and decreased subsequently. Cd significantly inhibited the activity of GPx. MDA content increased with increasing concentration of Cd. These results showed that acute Cd exposure led to harmful effects on the alimentary system of crabs, which are likely linked to Cd induced oxidative stress.
authors.affiliation: School of Life Science, Shanxi University, Wucheng Road 92, Taiyuan, 030006, Shanxi Province, People's Republic of China.
authors.forename: Hao
authors.initials: H
authors.lastname: Wu
authors.forename: Ruijing
authors.initials: R
authors.lastname: Xuan
authors.forename: Yingjun
authors.initials: Y
authors.lastname: Li
authors.forename: Xiaomin
authors.initials: X
authors.lastname: Zhang
authors.forename: Qian
authors.initials: Q
authors.lastname: Wang
authors.forename: Lan
authors.initials: L
authors.lastname: Wang
mesh_terms: D000818:Animals; D000975:Antioxidants / Q000032:analysis / Q000378:metabolism*; D003386:Brachyura / Q000187:drug effects* / Q000201:enzymology; D002104:Cadmium / Q000633:toxicity*; D002374:Catalase / Q000378:metabolism; D005618:Fresh Water / Q000737:chemistry*; D005979:Glutathione Peroxidase / Q000378:metabolism; D043143:Hepatopancreas / Q000187:drug effects / Q000201:enzymology; D007422:Intestines / Q000187:drug effects / Q000201:enzymology; D015227:Lipid Peroxidation / Q000187:drug effects*; D008315:Malondialdehyde / Q000378:metabolism; D018384:Oxidative Stress / Q000187:drug effects; D013270:Stomach / Q000187:drug effects / Q000201:enzymology; D013482:Superoxide Dismutase / Q000378:metabolism
chemical_list: D000975:Antioxidants; D002104:Cadmium; D008315:Malondialdehyde; D002374:Catalase; D005979:Glutathione Peroxidase; D013482:Superoxide Dismutase