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Frontiers Media, Frontiers in Chemistry, (1)

DOI: 10.3389/fchem.2013.00029

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Synthesis of functionalized fluorescent silver nanoparticles and their toxicological effect in aquatic environments (Goldfish) and HEPG2 cells

Journal article published in 2013 by Elisabete Oliveira, Hugo M. Santos, Javier Garcia-Pardo, Mário Diniz ORCID, Julia Lorenzo, Benito Rodríguez-González ORCID, José L. Capelo, Carlos Lodeiro ORCID
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

Silver nanoparticles, AgNPs, are widely used in our daily life, mostly due to their antibacterial, antiviral, and antifungal properties. However, their potential toxicity remains unclear. In order to unravel this issue, emissive AgNPs were first synthetized using an inexpensive photochemical method, and then their permeation was assessed in vivo in goldfish and in vitro in human hepatoma cells (HepG2). In addition, the oxidative stress caused by AgNPs was assessed in enzymes such as glutathione-S-transferase (GST), catalase (CAT), and in lipid peroxidation (LPO). This study demonstrates that the smallest sized AgNPs@3 promote the largest changes in gold fish livers, whereas AgNPs@1 were found to be toxic in HEPG2 cells depending on both the size and functionalized/stabilizer ligand.