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6. Simple and reliable method to simultaneously determine urinary 1‐ and 2‐naphthol using in situ derivatization and gas chromatography‐mass spectrometry for biological monitoring of naphthalene exposure in occupational health practice

Author

Takeuchi, Akito, primary, Nakamura, Sadao, additional, Namera, Akira, additional, Kondo, Tomoaki, additional, Onuki, Hiroyuki, additional, Yamamoto, Shinobu, additional, Okamura, Shingo, additional, Nishinoiri, Osamu, additional, Endo, Yoko, additional, Miyauchi, Hiroyuki, additional, and Endo, Ginji, additional

Published
2020
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18. Toxicity of Agricultural Chemicals in Daphnia magna

Author

Matsumoto, Ken-ichi, Hosokawa, Mamoru, Kuroda, Koichi, and Endo, Ginji

Subjects
Immobilization, fungi, Daphnia magna, LC_50, Agricultural chemical, reproductive and urinary physiology, Brood
Abstract

Background : Daphnia magna is a useful aquatic organism for testing ecological toxicities of environmental pollutants. However, there were only a few studies on agricultural chemicals using these organisms. / Methods : We investigated acute and subchronic toxicities of 30 agricultural chemicals commonly used in Japan in D. magna. Acute toxicity of the agricultural chemicals was determined using the concentrations yielding 50% immobility of D. magna after 24 hr and 48 hr exposure as end points. D. magna was cultivated with the chemical and algae until the first brood production. Lethal toxicity and the number of survival broods were determined within 13 days....

Published
2009

19. Effectiveness of Arsenic Mitigation Program in Bangladesh : Relationship between Arsenic Concentrations in Well Water and Urine

Author

Habib, Ahsan, Hayashi, Tomoshige, Sato(Kogawa), Kyoko, Hata, Akihisa, Ikebe, Maiko, Rahman, Fashiur, Hassan, Parvez, Endo, Yoko, and Endo, Ginji

Subjects
inorganic chemicals, Bangladesh, integumentary system, Urinary arsenic level, Well water, Arsenic contamination
Abstract

Background : Arsenic in drinking water remains a major public problem in Bangladesh, although arsenic mitigation programs began there a decade ago. The purpose of this study was to examine the effectiveness of this program by determining the relationship between current arsenic levels in well water and the high level of urinary arsenic excretion. / Methods : A community-based cross-sectional study was conducted in the Pabna district of Bangladesh between May and July 2005. We included 174 married couples and collected their drinking water from 138 wells. The allowable limit for arsenic in drinking water is 50 μg/L in Bangladesh, while the normal level of urinary arsenic is ≦40 μg･1.5L^-1･day^-1 by Dhaka Community Hospital....

Published
2007

20. Screening and surveillance for occupational cholangiocarcinoma in workers exposed to organic solvents

Author

Kubo, Shoji, Takemura, Shigekazu, Tanaka, Shogo, Nishioka, Takayoshi, Kinoshita, Masahiko, Hamano, Genya, Ito, Tokuji, Yamamoto, Takatsugu, Abue, Makoto, Aoki, Masaru, Nakagawa, Kei, Hijioka, Susumu, Miyamoto, Atsushi, Osaki, Yukio, Endo, Ginji, Kumagai, Shinji, Kubo, Shoji, Takemura, Shigekazu, Tanaka, Shogo, Nishioka, Takayoshi, Kinoshita, Masahiko, Hamano, Genya, Ito, Tokuji, Yamamoto, Takatsugu, Abue, Makoto, Aoki, Masaru, Nakagawa, Kei, Hijioka, Susumu, Miyamoto, Atsushi, Osaki, Yukio, Endo, Ginji, and Kumagai, Shinji

Abstract

Purpose: This study aimed to establish an efficient strategy for screening and surveillance for occupational cholangiocarcinoma. / Methods: We evaluated the consecutive changes in laboratory findings during regular health examinations and in abdominal ultrasonography findings before the diagnosis of occupational cholangiocarcinoma in nine patients. The results of laboratory tests and abdominal ultrasonography at the time of diagnosis were also examined....

Published
2016

30. Occupational exposure limits for cumene, 2,4‐dichlorophenoxy acetic acid, silicon carbide whisker, benzyl alcohol, and methylamine, and carcinogenicity, occupational sensitizer, and reproductive toxicant classifications.

Author

Araki, Atsuko, Azuma, Kenichi, Endo, Ginji, Endo, Yoko, Fukushima, Tetsuhito, Hara, Kunio, Harada, Koji, Hori, Hajime, Horie, Seichi, Ichiba, Masayoshi, Ichihara, Gaku, Ikeda, Masayuki, Ito, Akiyoshi, Ito, Yuki, Iwasawa, Satoko, Kakumu, Takeyasu, Kamijima, Michihiro, Karita, Kanae, Katoh, Takahiko, and Kawai, Toshio

Subjects
ACETIC acid, SILICON carbide, BENZYL alcohol, METHYLAMINES, CARCINOGENICITY
Published
2019
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50. Occupational Exposure Limits for ethylidene norbornene, ethyleneimine, benomyl, and 2,3‐epoxypropyl methacrylate, and classifications on carcinogenicity

Author

Araki, Atsuko, Azuma, Kenichi, Endo, Ginji, Endo, Yoko, Fukushima, Tetsuhito, Hara, Kunio, Hori, Hajime, Horie, Seichi, Horiguchi, Hyogo, Ichiba, Masayoshi, Ichihara, Gaku, Ikeda, Masayuki, Ishitake, Tatsuya, Ito, Akiyoshi, Ito, Yuki, Iwasawa, Satoko, Kakumu, Takeyasu, Kamijima, Michihiro, Karita, Kanae, Katoh, Takahiko, Kawai, Toshio, Kawamoto, Toshihiro, Kumagai, Shinji, Kusaka, Yukinori, Matsumoto, Akiko, Miyagawa, Muneyuki, Miyauchi, Hiroyuki, Morimoto, Yasuo, Nagano, Kasuke, Naito, Hisao, Nakajima, Tamie, Nakano, Makiko, Nomiyama, Tetsuo, Okuda, Hirokazu, Okuda, Masayuki, Omae, Kazuyuki, Sakurai, Haruhiko, Sato, Kazuhiro, Sobue, Tomotaka, Suwazono, Yasushi, Takebayashi, Toru, Takeshita, Tatsuya, Takeuchi, Akito, Takeuchi, Ayano, Tanaka, Masatoshi, Tanaka, Shigeru, Tsukahara, Teruomi, Tsunoda, Masashi, Ueno, Susumu, Ueyama, Jun, Umeda, Yumi, Yamamoto, Kenya, Yamano, Yuko, Yamauchi, Takenori, and Yano, Eiji

Published
2018
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