Toxicity and accumulation of Copper Oxide (CuO) Nanoparticles in different life stages of Artemia salina

Publication date: Available online 22 March 2017 Source:Environmental Toxicology and Pharmacology Author(s): M.R. Madhav, S. Einstein Mariya David, R.S. Suresh Kumar, J.S. Swathy, M. Bhuvaneshwari, Amitava Mukherjee, N. Chandrasekaran Metal nanoparticles production rate and its applications have raised concerns about their release and toxicity to the aquatic and terrestrial organisms. The primary size of Copper Oxide nanoparticles (CuO NP’s) was found to be 114±36nm using Scanning Electron Microscopy (SEM) and a significant increase in the hydrodynamic diameter of CuO NP was seen within 1h of interaction. The median lethal concentration (LC50) values obtained from the acute toxicity studies on different life stages of Artemia salina was found to be 61.4, 35, 12.2 and 175.2mg/L for 1d, 2d, 7d old and adult, respectively. The toxicity associate changes in biochemical markers such as Catalase, Reduced glutathione and Glutathione-S-Transferase were evident. The accumulation of Cu nanoparticles into the gut of Artemia salina was the major reason for toxicity. Our results demonstrate the toxicity of CuO NPs to Artemia salina, which necessitate the detailed investigation on the possible eco-toxicological implication of these nanomaterials.
Source: Environmental Toxicology and Pharmacology - Category: Environmental Health Source Type: research