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Your search keyword '"Yamazaki, Eriko"' showing total 38 results
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38 results on '"Yamazaki, Eriko"'

15. Contributors

Author

Agarwal, Vivek, Al-Rashidi, Amjad, Alsabti, Bedour, Arora, Vaishali, Banerjee, Partho, Baranwal, Parul, Barik, Saroja Kumar, Barik, Debidatta, Barik, Bapun, Bastia, Tapan Kumar, Behera, Madhusmita, Bhagat, Chandrashekhar, Bora, Aaradhana, Das, Abhijeet, Das, Pallavi, Das, Bhumika, Das, Nilotpal, Deka, Kamal, Deka, Chinmoyee, Goswami, Ritusmita, Herath, K.R.H.M.O.N., Jeevana, Amulya, Jindal, Manoj Kumar, Joshi, Tanuj, Kaur, Gagandeep, Khosla, Babita, Kumar, Manish, Kumar, Umayadoss Saravana, Lalwani, Dipa, Modi, Ankit, Mohapatra, Pranab Kumar, Nayak, Saroj Kumar, Nayak, Rudra Prasanna, Neog, Nikita, Nirmal Kumar, J.I., Pande, Ashutosh Pratap, Patni, Kiran, Pradhan, Subashis, Priyadarsini, Pooja, Ramanathan, AL., Rath, Prasanta, Sabarathinam, Chidambaram, Sadeqi, Dalal, Sahoo, Sunil Kumar, Samayamanthula, Dhanu Radha, Shamurailatpam, Monica S., Singh, Yashika, Singh Laura, Jitender, Srivastava, Vaibhav, Taniyasu, Sachi, Tanwer, Naresh, Wickramaarachchi, T.N., Yamashita, Nobuyoshi, and Yamazaki, Eriko

Published
2024
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29. Bisphenol A and other bisphenol analogues including BPS and BPF in surface water samples from Japan, China, Korea and India

Author

Yamazaki, Eriko, primary, Yamashita, Nobuyoshi, additional, Taniyasu, Sachi, additional, Lam, James, additional, Lam, Paul K.S., additional, Moon, Hyo-Bang, additional, Jeong, Yunsun, additional, Kannan, Pranav, additional, Achyuthan, Hema, additional, Munuswamy, Natesan, additional, and Kannan, Kurunthachalam, additional

Published
2015
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32. Microminipigs as a new experimental animal model for toxicological studies: comparative pharmacokinetics of perfluoroalkyl acids

Author

Guruge, Keerthi S., primary, Noguchi, Michiko, additional, Yoshioka, Koji, additional, Yamazaki, Eriko, additional, Taniyasu, Sachi, additional, Yoshioka, Miyako, additional, Yamanaka, Noriko, additional, Ikezawa, Mitsutaka, additional, Tanimura, Nobuhiko, additional, Sato, Masumi, additional, Yamashita, Nobuyoshi, additional, and Kawaguchi, Hiroaki, additional

Published
2015
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35. Perfluorinated carboxylic and sulphonic acids in surface water media from the regions of Tibetan Plateau: Indirect evidence on photochemical degradation?

Author

Yamazaki, Eriko, Falandysz, Jerzy, Taniyasu, Sachi, Hui, Ge, Jurkiewicz, Gabriela, Yamashita, Nobuyoshi, Yang, Yong-Liang, and Lam, Paul K. S.

Subjects
*FLUORINATION, *CARBOXYLIC acids, *SULFONIC acids, *PHOTOCHEMISTRY, *CHEMICAL decomposition
Abstract

Perfluorinated surfactants and repellents are synthetic substances that have found numerous industrial and customer applications. Due to their persistence, at least two groups of these substances—perfluorinated carboxylic acids (PFCAs) and perfluorinated sulfonic acids (PFSAs)—are diffused widely in the environment. It is hypothesized that the Tibetan Plateau, is one of few unique places on the Earth, due to its topography, specifically the vast space and high elevation above sea level, geographic location, climate, high solar radiation, lack of industry, little urbanization and general lack of significant direct sources of pollution. There it is believed possible to gain an insight into atmospheric fate (possible photochemical degradation of higher molecular mass and formation of lower molecular mass PFCAs and PFSAs) of PFASs under un-disturbed environmental conditions. Ultratrace analytical method for PFCAs and PFSAs and use of transportation and field blanks, laboratory blanks and isotopically labelled surrogates for recovery control has allowed the determination of nine perfluorinated carboxylic acids and six perfluorinated sulfonic acids at ultra-trace levels in water based samples from the alpine dimension regions of the Tibetan Plateau, the eastern slope of Minya Konka peak at the eastern edge of the Tibetan Plateau, and also from the city of Chengdu from the lowland of the Sichuan Province in China. The specific compositional pattern of PFCAs and PFSAs and low levels of pollution with those compounds were observed in the central region of the Tibetan Plateau and in the region adjacent to the peaks of Minya Konka in the Eastern Tibetan Plateau. The fingerprint of the compositional pattern of PFCAs and PFSAs in water samples in the central region of the Tibetan Plateau and in the alpine region adjacent to the peaks of Minya Konka in the Eastern Tibetan Plateau may be explained by the result of photochemical degradation with dealkylation of longer chain compounds and formation of shorter chain compounds, which are more resistant to photochemical degradation. [ABSTRACT FROM PUBLISHER]

Published
2016
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36. General Principles for the Education and Training of GCP Inspectors: The Outcome of Discussions by International Regulatory Experts in the Discussion Group on the ICH E6 Guideline.

Author

Uyama, Yoshiaki, Yamazaki, Eriko, Clark, Katherine, Wang, Chao-Yi, Woro, Endang, Tong, Foo Yang, Sachidanandan, Sumitra, Rodriguez, Ana, Oh, Hojin, Saleh, Kamaruzaman, Cirunay, Joyce, Wapeewuttikorn, Akanid, Rogov, Evgeny, Alshahwan, Khaled W., Herrera, Ileana, Mthetwa, Joseph, Fakudze, Fortunate, and Osawa, Tomoko

Published
2015
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37. Distribution and primary source analysis of per- and poly-fluoroalkyl substances with different chain lengths in surface and groundwater in two cities, North China.

Author

Yiming Yao, Hongkai Zhu, Bing Li, Hongwei Hu, Tao Zhang, Yamazaki, Eriko, Taniyasu, Sachi, Yamashita, Nobuyoshi, and Hongwen Sun

Subjects
FLUOROALKYL compounds, GROUNDWATER, CITIES & towns, STREAM chemistry, HIGH performance liquid chromatography, TANDEM mass spectrometry, RUNOFF, PERFLUOROOCTANOIC acid
Abstract

Per- and poly-fluoroalkyl substances (PFASs) have been widely detected in the hydrosphere. The knowledge on the distribution and composition patterns of PFAS analogues with different chain length significantly contribute to their source analysis. In the present study, a regional scale investigation of PFASs in surface river waters and adjacent ground waters was carried out in two cities of China with potential contamination, Tianjin and Weifang. A total of 31 water samples were collected, and 20 PFASs therein were measured by a high-performance liquid chromatograph–tandem mass spectrometer (HPLC–MS/MS). The possible sources of PFASs in the aquatic environment were assessed primarily by concentration patterns as well as hierarchical cluster analysis. In all 4 rivers investigated in the two cities, perfluoroalkyl carboxylic acids (PFCAs) were the dominant compounds contributing over 70% of the PFASs detected. Perfluorooctanoic acid (PFOA) was the dominant PFCA with a concentration range of 8.58–20.3 ng/L in Tianjin and 6.37–25.9 ng/L in Weifang, respectively. On the average, the highest concentration was observed in samples from Dagu Drainage Canal (Dagu) in Tianjin and those short-chain PFASs (C4–C6) was detected with a comparable level of the longer-chain PFASs (>C6). Specifically, perfluorobutanoic acid (PFBA) was dominant in the short-chain analogues. This indicates that a remarkably increasing input of short-chain PFASs might be related to wastewater treatment plant effluent or industrial discharges, which could be possibly due to the switch of manufacturing to short-chain products. In Weifang, precipitation and subsequent surface runoff as non-point sources could be significant inputs of PFASs into surface water while groundwater was possibly subjected to severe point sources with ∑PFASs concentration up to ~100 ng/L. The inconsistent distribution patterns in groundwater suggest complicated pathways of contamination. [ABSTRACT FROM AUTHOR]

Published
2014
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38. Microminipigs as a new experimental animal model for toxicological studies: comparative pharmacokinetics of perfluoroalkyl acids.

Author

Guruge KS, Noguchi M, Yoshioka K, Yamazaki E, Taniyasu S, Yoshioka M, Yamanaka N, Ikezawa M, Tanimura N, Sato M, Yamashita N, and Kawaguchi H

Subjects
Animals, Female, Models, Animal, Swine, Swine, Miniature, Tissue Distribution, Toxicology, Alkanesulfonic Acids pharmacokinetics, Decanoic Acids pharmacokinetics, Fluorocarbons pharmacokinetics, Lauric Acids pharmacokinetics
Abstract

In this study, we evaluated the efficacy of a novel minipig strain, the Microminipig (MMPig), as an animal model for studying the pharmacokinetics of a mixture of 10 perfluoroalkyl acids (PFAAs). After a single oral dose was given, we found that the blood depuration of PFAAs (blood t1/2), which we calculated using first-order elimination curves, ranged from 1.6 to 86.6 days. Among the five body compartments analyzed, the liver was the greatest site of accumulation of perfluorooctanesulfonate and longer chain perfluorinated carboxylates such as perfluorodecanoic acid, perfluoroundecanoic acid and perfluorododecanoic acid. We observed an increasing accumulation trend of perfluorinated carboxylates in the organs associated with the fluorinated carbon chain length. The perfluorononanoic acid burden was the highest among the treated compounds 21 days after a single exposure, as 29% of the given perfluorononanoic acid dose was accumulated in the tissues. The persistence of PFAAs in edible pig tissues even after 21 days post-exposure raises concerns about the safety of swine products. This was the first study to use MMPigs to elucidate the pharmacokinetics of a group of environmental pollutants. We found that MMPigs could be excellent experimental animals for toxicological studies due to their easy handling, cost efficacy for target compounds and ease of waste treatment., (Copyright © 2015 John Wiley & Sons, Ltd.)

Published
2016
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