A. Furuhama, Takehiko I. Hayashi, Hiroshi Yamamoto
{"title":"Strategy for development of quantitative structure–activity–activity relationship models for chronic fish toxicity: prediction of early-life stage toxicity to Oryzias latipes from acute Daphnia magna toxicity","authors":"A. Furuhama, Takehiko I. Hayashi, Hiroshi Yamamoto","doi":"10.11403/JSET.24.33","DOIUrl":"https://doi.org/10.11403/JSET.24.33","url":null,"abstract":"","PeriodicalId":14585,"journal":{"name":"Japanese journal of environmental toxicology","volume":"16 1","pages":"33-42"},"PeriodicalIF":0.0,"publicationDate":"2021-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83950817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hideaki Tokusumi, Naoto Fujioka, N. M. Tue, Akitoshi Goto, G. Suzuki, K. Nakayama
{"title":"Toxicity testing of 2,3,7,8-tetrachlorodibenzo-p-dioxin in early-life stage of Japanese medaka: Optimization of conditions for assessing relative potencies of dioxin-like compounds","authors":"Hideaki Tokusumi, Naoto Fujioka, N. M. Tue, Akitoshi Goto, G. Suzuki, K. Nakayama","doi":"10.11403/JSET.24.1","DOIUrl":"https://doi.org/10.11403/JSET.24.1","url":null,"abstract":"","PeriodicalId":14585,"journal":{"name":"Japanese journal of environmental toxicology","volume":"7 1","pages":"1-11"},"PeriodicalIF":0.0,"publicationDate":"2021-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72763601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Comparative sensitivity of various developmental stages of the sea urchin Anthocidaris crassispina to silver nitrate and silver nanocolloids","authors":"N. Kobayashi, C. Kataoka, S. Kashiwada","doi":"10.11403/JSET.23.38","DOIUrl":"https://doi.org/10.11403/JSET.23.38","url":null,"abstract":"","PeriodicalId":14585,"journal":{"name":"Japanese journal of environmental toxicology","volume":"49 1","pages":"38-46"},"PeriodicalIF":0.0,"publicationDate":"2020-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91063785","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yuki Takai, T. Takamura, Shintaro Enoki, Moeko Sato, Yoko Kato-Unoki, Xuchun Qiu, Y. Shimasaki, Y. Oshima
{"title":"Transcriptome analysis of medaka (Oryzias latipes) exposed to tributyltin","authors":"Yuki Takai, T. Takamura, Shintaro Enoki, Moeko Sato, Yoko Kato-Unoki, Xuchun Qiu, Y. Shimasaki, Y. Oshima","doi":"10.11403/JSET.23.10","DOIUrl":"https://doi.org/10.11403/JSET.23.10","url":null,"abstract":"","PeriodicalId":14585,"journal":{"name":"Japanese journal of environmental toxicology","volume":"12 1","pages":"10-21"},"PeriodicalIF":0.0,"publicationDate":"2020-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79154037","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Metal bioavailability and bioaccumulation in the polychaete Perinereis nuntia: relationship between predictions using chemical analysis and accumulation through actual exposures","authors":"Billah Md.Masum, Kokushi Emiko, Uno Seiichi","doi":"10.11403/JSET.22.41","DOIUrl":"https://doi.org/10.11403/JSET.22.41","url":null,"abstract":"","PeriodicalId":14585,"journal":{"name":"Japanese journal of environmental toxicology","volume":"38 1","pages":"41-52"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86472019","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mst Ruhina Margia Khanam, Y. Shimasaki, M. Tsuyama, H. Goto, Xuchun Qiu, Koki Mukai, Y. Oshima
In this study, an OJIP-test of two marine diatom species, Thalassiosira pseudonana (single-celled species) and Skeletonema marinoi-dohrnii complex (chain-forming species), were exposed to EC10 and EC50 levels of diuron and tributyltin (TBT) for 72 h. Increased tendency of relative fluorescence intensity (Ft/Fo value) at 300 μs and J step (2 ms) and a significantly (P < 0.05) increased Mo value (initial slope of fluorescence curve) were observed during 72 of diuron exposure in both species, whereas TBT did not increase those. These results strongly suggest that diuron efficiently blocked photosystem II-catalyzed photosynthetic electron transport at the secondary electron acceptor QB, which is original biological activity of diuron in diatoms. However, some parameters (e.g., φPo and φEo, Fv/Fo and PIABS,) were significantly (P < 0.05) decreased by TBT treatment. Although the mechanism responsible for the decrease is not clear, relatively severe reductions in levels of Fv/Fo (an indicator of water-splitting activity) by TBT treatment than diuron treatment suggest that TBT inhibits photosynthetic function via inhibition of photosynthetic oxygen evolving systems, a different mechanism than that of diuron. Moreover, present study suggested that PIABS derived from OJIP-test is a high sensitive biological marker for detecting the toxic effect of pollutants which inhibit photosynthetic function.
{"title":"Presumption of toxic mechanism of tributyltin on photosystem in marine diatoms by comparison to diuron as a reference agent through chlorophyll a fluorescence transient analysis","authors":"Mst Ruhina Margia Khanam, Y. Shimasaki, M. Tsuyama, H. Goto, Xuchun Qiu, Koki Mukai, Y. Oshima","doi":"10.11403/JSET.22.13","DOIUrl":"https://doi.org/10.11403/JSET.22.13","url":null,"abstract":"In this study, an OJIP-test of two marine diatom species, Thalassiosira pseudonana (single-celled species) and Skeletonema marinoi-dohrnii complex (chain-forming species), were exposed to EC10 and EC50 levels of diuron and tributyltin (TBT) for 72 h. Increased tendency of relative fluorescence intensity (Ft/Fo value) at 300 μs and J step (2 ms) and a significantly (P < 0.05) increased Mo value (initial slope of fluorescence curve) were observed during 72 of diuron exposure in both species, whereas TBT did not increase those. These results strongly suggest that diuron efficiently blocked photosystem II-catalyzed photosynthetic electron transport at the secondary electron acceptor QB, which is original biological activity of diuron in diatoms. However, some parameters (e.g., φPo and φEo, Fv/Fo and PIABS,) were significantly (P < 0.05) decreased by TBT treatment. Although the mechanism responsible for the decrease is not clear, relatively severe reductions in levels of Fv/Fo (an indicator of water-splitting activity) by TBT treatment than diuron treatment suggest that TBT inhibits photosynthetic function via inhibition of photosynthetic oxygen evolving systems, a different mechanism than that of diuron. Moreover, present study suggested that PIABS derived from OJIP-test is a high sensitive biological marker for detecting the toxic effect of pollutants which inhibit photosynthetic function.","PeriodicalId":14585,"journal":{"name":"Japanese journal of environmental toxicology","volume":"2 1","pages":"13-29"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85271811","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Takeshi Hano, N. Ohkubo, Mana Ito, T. Onduka, K. Ito, H. Sakaji
{"title":"Comparative toxicity of seven neonicotinoid insecticides and their two metabolites to juveniles of the marine crustacean kuruma prawn (Marsupenaeus japonicas)","authors":"Takeshi Hano, N. Ohkubo, Mana Ito, T. Onduka, K. Ito, H. Sakaji","doi":"10.11403/JSET.20.35","DOIUrl":"https://doi.org/10.11403/JSET.20.35","url":null,"abstract":"","PeriodicalId":14585,"journal":{"name":"Japanese journal of environmental toxicology","volume":"19 1","pages":"35-48"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91295488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. Kikuchi, M. Niikura, Kenta Kawaguchi, Chihiro Naito, J. Sawai
This study focused on the toxic effects of low pH on Daphnia magna embryos, young, and adults in a soft and a hard water. Fourto six-hour-old embryos after egg laying were obtained from the female’s brood chamber and immediately exposed to four or five level of different low-pH solutions for 120 hours. Embryonic toxicity was determined by evaluating inhibition of hatching and immobilization of the embryos following 72, 96, and 120 hours of exposure to low-pH solutions. Young(<24 hours following release from the female)and adults were also exposed to four or five level of different low-pH solutions for 48 hours. Low pH resulted in significant toxicity during embryonic development, as was indicated by inhibition of hatching and/or immobilization in embryos following exposure to pH 6.6 in soft water and to pH 6.0 in hard water. Immobilization was observed in young when subjected to solutions at/below pH 6.5 in soft water and at/below pH 5.2 in hard water. Adults were more tolerant to low pH in soft water than young or embryos, with the pH causing 50% immobilization in adults following 48-hour exposure 1.4 points lower than that which resulted in young or embryos 50% immobilization. The hardness of the water in low-pH solutions can influence the immobilization ratio of young. These observations suggest that the embryonic developmental test in early life stages allows for rapid and sensitive determination of low-pH toxicity.
{"title":"Toxic effects of low pH on Daphnia magna embryos","authors":"M. Kikuchi, M. Niikura, Kenta Kawaguchi, Chihiro Naito, J. Sawai","doi":"10.11403/JSET.19.93","DOIUrl":"https://doi.org/10.11403/JSET.19.93","url":null,"abstract":"This study focused on the toxic effects of low pH on Daphnia magna embryos, young, and adults in a soft and a hard water. Fourto six-hour-old embryos after egg laying were obtained from the female’s brood chamber and immediately exposed to four or five level of different low-pH solutions for 120 hours. Embryonic toxicity was determined by evaluating inhibition of hatching and immobilization of the embryos following 72, 96, and 120 hours of exposure to low-pH solutions. Young(<24 hours following release from the female)and adults were also exposed to four or five level of different low-pH solutions for 48 hours. Low pH resulted in significant toxicity during embryonic development, as was indicated by inhibition of hatching and/or immobilization in embryos following exposure to pH 6.6 in soft water and to pH 6.0 in hard water. Immobilization was observed in young when subjected to solutions at/below pH 6.5 in soft water and at/below pH 5.2 in hard water. Adults were more tolerant to low pH in soft water than young or embryos, with the pH causing 50% immobilization in adults following 48-hour exposure 1.4 points lower than that which resulted in young or embryos 50% immobilization. The hardness of the water in low-pH solutions can influence the immobilization ratio of young. These observations suggest that the embryonic developmental test in early life stages allows for rapid and sensitive determination of low-pH toxicity.","PeriodicalId":14585,"journal":{"name":"Japanese journal of environmental toxicology","volume":"45 1","pages":"93-100"},"PeriodicalIF":0.0,"publicationDate":"2016-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79047546","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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