Sensitivity of freshwater pulmonate snail Lymnaea luteola L., to silver nanoparticles
Harrath, Daoud Ali, Phool Gend Yadav, Sudhir Kumar, Huma Ali, Saud Alarifi, Abdul Halim . 2014
Toxicity of nanoparticles depends on many factors including size, shape, chemical composition, surface area and surface charge. Silver nanoparticles (AgNPs) are likely to enter the aquatic ecosystems because of their multiple applications and pose a health concern for humans and aquatic species. Therefore, we used a freshwater snail Lymnaea luteola L (L. luteola) to investigate the acute toxicity and genotoxicity of AgNPs in a static-renewal system for 96 h. AgNPs caused molluscicidal activity in L. luteola, with 96 h median lethal concentrations (LC50) (48.10 mu g L-1). We have observed that AgNPs (36 mu g L-1) elicited a significant (p < 0.01) reduction in glutathione, glutathione-s-transferase and glutathione peroxidase with a concomitant increase in malondialdehyde level and catalase in digestive gland of L. luteola. However, a significant (p < 0.01) induction in DNA damage was observed by the alkaline single cell gel electrophoresis in digestive gland cells treated with AgNPs for 24 and 96 h. These results demonstrate that silver nanoparticles are lethal to freshwater snail L. luteola. The oxidative stress biomarkers and comet assay can successfully be used as sensitive tools of aquatic pollution biomonitoring. (c) 2013 Elsevier Ltd. All rights reserved.
There may be regional specialisation in structure and function across the placental surface. In Riyadh, Saudi Arabia, the length and the breadth of the placental surface at birth were highly…
Toxicity of nanoparticles depends on many factors including size, shape, chemical composition, surface area and surface charge. Silver nanoparticles (AgNPs) are likely to enter the aquatic…
Boswellia papyrifera and Boswellia carterii diffuses smoke polluting air that adversely affects indoor environment that certainly harm human health. Therefore, this study aims at…