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The November 1, 2007, issue of Environmental Health Perspectives (EHP) includes a research article and meeting report concerning nanomaterials. The research article, entitled “Nanosize Titanium Dioxide Stimulates Reactive Oxygen Species in Brain Microglia and Damages Neurons in Vitro,” describes the in vitro neurotoxicity of P25, a commercially available titanium dioxide nanomaterial. According to the study, P25 appears to be non-toxic...

On August 3, 2007, EHP-in-Press posted an article entitled “Nanosize Titanium Dioxide Stimulates Reactive Oxygen Species in Brain Microglia and Damages Neurons, In Vitro.” The article describes the in vitro neurotoxicity of P25, a commercially available titanium dioxide nanomaterial. According to the study, P25 appears to be non-toxic to isolated N27 neurons, but stimulates BV2 microglia to produce reactive oxygen species and damages oxidative...

EHP-in-Press published an article entitled “Persistent Tissue Kinetics and Redistribution of Nanoparticles, Quantum Dot 705, in Mice: ICP-MS Quantitative Assessment.” The purpose of the study was to assess the tissue disposition and pharmacokinetics of quantum dots (QD705) in mice. According to the article, the plasma half-life of QD705 in mice was short (18.5 hours), but analyses revealed QD705 persisted and even continued to increase in the spleen, liver, and kidney 28...