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Pulmonary Toxicity of Indium Tin Oxide and Copper Indium Gallium Diselenide

Published online by Cambridge University Press:  29 May 2012

Akiyo Tanaka
Affiliation:
Department of Environment Medicine, Graduate School of Medical Sciences, Kyushu University, EC Bldg 2F, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
Miyuki Hirata
Affiliation:
Department of Environment Medicine, Graduate School of Medical Sciences, Kyushu University, EC Bldg 2F, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
Kazunori Koga
Affiliation:
Department of Electronics, Graduate School of Information Science and Electrical Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoko 819-0395, Japan
Makiko Nakano
Affiliation:
Department of Preventive Medicine and Public Health, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
Kazuyuki Omae
Affiliation:
Department of Preventive Medicine and Public Health, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
Yutaka Kiyohara
Affiliation:
Department of Environment Medicine, Graduate School of Medical Sciences, Kyushu University, EC Bldg 2F, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
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Abstract

The aim of this review is to introduce the adverse health effects of indium compounds. This review consists of 2 parts: (1) a study of the toxic effects in indium compounds in humans, and (2) a study of the toxic effects of indium tin oxide (ITO) and copper indium gallium diselenide (CIGS) in animals.

To date, 4 epidemiological surveys have been conducted of indium-handling workers in Japan, and all who were studied showed that exposure to indium compounds caused pulmonary interstitial and emphysematous changes. There were clear dose-response and dose-effect relationships between the serum indium levels and the levels of Krebs von den Lungen-6 (KL-6), which is a serological indicator of interstitial pneumonia up until 2011, 8 cases of interstitial pneumonia in Japanese indium-exposed workers, 2 cases of pulmonary alveolar proteinosis (PAP) in US indium-exposed workers, and 1 case of PAP in a Chinese indium-exposed worker have been reported.

In animals studies, it has been clearly demonstrated that ITO and CIGS particles cause pulmonary toxicity and that the dissolution of ITO and CIGS particles in the lungs is considerably slow when repeated intratracheal instillations were given to experimental animals.

Thus, more studies are needed on the effects of human exposure to indium compounds.

Type
Research Article
Copyright
Copyright © Materials Research Society 2012

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