Nano Archive

Histological analysis of 70-nm silica particles-induced chronic toxicity in mice

Nishimori, Hikaru and Kondoh, Masuo and Isoda, Katsuhiro and Tsunoda, Shin-ichi and Tsutsumi, Yasuo and Yagi, Kiyohito (2009) Histological analysis of 70-nm silica particles-induced chronic toxicity in mice. European Journal of Pharmaceutics and Biopharmaceutics, 72 (3). 626 - 629.

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Nano-sized silica is a promising material for disease diagnosis, cosmetics and drugs. For the successful application of nano-sized material in bioscience, evaluation of nano-sized material toxicity is important. We previously found that nano-sized silica particles with a diameter of 70 nm showed acute liver failure in mice. Here, we performed histological analysis of major organs such as the liver, spleen, lung, kidney, brain and heart in mice, chronically injected with 70-nm silica particles for 4 weeks. Histological analysis revealed hepatic microgranulation and splenic megakaryocyte accumulation in these 70-nm silica particles treated mice, while the kidney, lung, brain and heart remained unaffected. Thus, liver and spleen appear to be the major target organs for toxicity by the chronic administration of the 70-nm silica particles.

Item Type:Article
Uncontrolled Keywords:Nanotoxicology; Silica particle; Histological analysis; Liver; Spleen
Subjects:NanoSafety > Environment, health and safety aspects of nanotechnology
ID Code:5636
Deposited By:SPI
Deposited On:05 Aug 2009 11:00
Last Modified:05 Aug 2009 11:00

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