Japanese journal of environmental toxicology最新文献_第4页

Distribution of trace elements in the fish gill lamellae corresponded to the structure by micro-PIXE analysis using Carassius auratus langsdorfii exposed to copper chloride 利用氯化铜对鲫鱼鳃片微量元素进行微量元素分析，发现鳃片中微量元素的分布与鳃片结构一致

Japanese journal of environmental toxicology Pub Date : 2010-06-30 DOI: 10.11403/JSET.13.69

Junya Hangai, T. Yoshitomi, S. Homma-Takeda, M. Oikawa, T. Ishikawa, H. Iso, H. Imaseki

{"title":"Distribution of trace elements in the fish gill lamellae corresponded to the structure by micro-PIXE analysis using Carassius auratus langsdorfii exposed to copper chloride","authors":"Junya Hangai, T. Yoshitomi, S. Homma-Takeda, M. Oikawa, T. Ishikawa, H. Iso, H. Imaseki","doi":"10.11403/JSET.13.69","DOIUrl":"https://doi.org/10.11403/JSET.13.69","url":null,"abstract":"Morphological alterations of the gill lamellae caused by heavy metal exposure are well known. However, the metal profiles in the gill lamellae have poorly understood. In this study, we attempted to determine the precise distribution of copper in the gill lamellae of the Carassius auratus langsdorfii exposed to copper chloride by microbeam scanning particle induced X-ray emission （ micro-PIXE ） analysis. Essential trace elements, such as iron and zinc in the gill lamellae were also determined and their distribution was compared with that of copper. Exposure of the fishes to copper chloride resulted in a marked alter-ation in the gill lamellae; the gill filaments on the gill lamellae were clubbing. Micro-PIXE analysis revealed a site-specific distribution of copper corresponding to the alterations. Copper was found to be high in the periphery of the gill lamellae, and low in the blood ves-sel and the tissues surrounding the blood vessel. The profiles of copper and the essential trace elements were complementary distribution.","PeriodicalId":14585,"journal":{"name":"Japanese journal of environmental toxicology","volume":"1 1","pages":"69-72"},"PeriodicalIF":0.0,"publicationDate":"2010-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77588815","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}

引用次数: 0

Challenge of obsolete chemicals management: Its causes, public health and environmental impacts in developing countries (Ethiopia) 废弃化学品管理的挑战:发展中国家的原因、公共卫生和环境影响(埃塞俄比亚)

Japanese journal of environmental toxicology Pub Date : 2010-06-30 DOI: 10.11403/JSET.13.1

A. Abebe, S. Haq

引用次数: 1

Comparison and validation of fish bioassays for effluent toxicity testing. 鱼类生物测定法在污水毒性测试中的比较与验证。

Japanese journal of environmental toxicology Pub Date : 2010-06-30 DOI: 10.11403/JSET.13.27

T. Nishida, Katsuyuki Kadota, A. Nakamura

{"title":"Comparison and validation of fish bioassays for effluent toxicity testing.","authors":"T. Nishida, Katsuyuki Kadota, A. Nakamura","doi":"10.11403/JSET.13.27","DOIUrl":"https://doi.org/10.11403/JSET.13.27","url":null,"abstract":"Water quality guidelines have been derived to protect aquatic ecosystems in the regulatory framework of many countries. Direct toxicity assessment(DTA)or whole effluent toxicity(WET)testing has been conducted to estimate the toxicity of complex mixture such as industrial effluents using various bioassays. Most countries adopted acute and/or chronic fish toxicity tests in their regulations. For acute toxicity testing, juvenile or adult fish are normally used, whereas the fish embryo toxicity(FET)test is suggested as the alternative to the acute fish tests in Germany. Although Japanese Ministry of the Environment recently started investigation to introduce the WET system for regulatory purpose, bioassays to be employed are not yet decided. In this paper, sensitivities and practical aspects of fish toxicity tests(FET test and OECD Guidelines 203 and 212)were compared for two fish species, zebrafish(Danio rerio)and Japanese medaka(Oryzias latipes).Results indicate that O. latipes acute toxicity test was the most appropriate method in practical aspects of regulations. The effect of water hardness on Cu toxicity suggested that the water hardness of effluents should be considered to verify toxicity data and to minimize potential toxicity after dilution of effluents.","PeriodicalId":14585,"journal":{"name":"Japanese journal of environmental toxicology","volume":"27 1","pages":"27-35"},"PeriodicalIF":0.0,"publicationDate":"2010-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74570309","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}

引用次数: 0

Immunotoxicity of tributyl tin to Japanese sea bass, Lateolabrax japonicus and red sea bream, Pagrus major, in relation to their body burden 三丁基锡对日本黑鲈和红鲷的免疫毒性及其与体负荷的关系

Japanese journal of environmental toxicology Pub Date : 2009-12-30 DOI: 10.11403/JSET.12.123

J. Koyama, Masayo Murakami, S. Uno

{"title":"Immunotoxicity of tributyl tin to Japanese sea bass, Lateolabrax japonicus and red sea bream, Pagrus major, in relation to their body burden","authors":"J. Koyama, Masayo Murakami, S. Uno","doi":"10.11403/JSET.12.123","DOIUrl":"https://doi.org/10.11403/JSET.12.123","url":null,"abstract":"Two marine fishes, Japanese sea bass and red sea bream, were exposed to dietary tributyl tin(TBT)for two weeks to examine its immunotoxicity in relation to their body burdens. TBT body burdens of test fishes were also compared to TBT body burdens of their wild and cultured counterparts to predict their immune function inhibition. TBT concentrations of both fishes were significantly increased when dietary TBT concentrations were increased. While one of the non-specific immune responses, phagocytosis by neutrophil was not inhibited by TBT, another response, NBT reduction as a measure of oxidative burst of both fish species was inhibited even in the lowest dietary TBT concentration. Reverse sigmoid curve relationships were observed between inhibition of oxidative burst and TBT body burden in both fish species. TBT concentrations of some wild sea bass and cultured red sea bream were higher than the observed TBT concentrations of the lowest concentration exposure group of the present study. These results suggest that non-specific immune response of wild sea bass and cultured red sea bream can be inhibited by TBT contamination.","PeriodicalId":14585,"journal":{"name":"Japanese journal of environmental toxicology","volume":"44 1","pages":"123-133"},"PeriodicalIF":0.0,"publicationDate":"2009-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86880013","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}

引用次数: 0

Genotoxicity Evaluation of Titanium Dioxide Nanoparticles 二氧化钛纳米颗粒的遗传毒性评价

Japanese journal of environmental toxicology Pub Date : 2009-12-30 DOI: 10.11403/JSET.12.71

眞江馬, 憲弘小林, 聖人納屋, 荘輔花井, 準子中西

引用次数: 2

Emerging Aquatic Contamination of Nanomaterials and its Ecological Risk 新出现的纳米材料水体污染及其生态风险

Japanese journal of environmental toxicology Pub Date : 2009-01-01 DOI: 10.11403/JSET.12.19

S. Kashiwada

{"title":"Emerging Aquatic Contamination of Nanomaterials and its Ecological Risk","authors":"S. Kashiwada","doi":"10.11403/JSET.12.19","DOIUrl":"https://doi.org/10.11403/JSET.12.19","url":null,"abstract":"1.はじめにナノマテリアルとは,基本的には物体の大きさを表す外寸(タテ・ヨコ・高さ)のうち少なくともひとつの大きさが100nm(ナノ・メートル,1億分の1メートル)以下であり,電気的・物理化学的あるいは生物・医学的な性質を持つように合成された固体・コロイド・イオンなどの化合物を指す。ナノマテリアルは多くの分野の化学製品を進歩させると期待されており,既に多くの製品が世に出されている。1993 年に single-walled carbon nanotubes(SWNTs, 単層カーボンナノチューブ)が発見されて以来, ナノテクノロジー産業はカーボンナノチューブを含む新規化合物あるいはナノサイズに加工し ABSTRACT Emerging nanotechnology has received great attention in recent years because of its widescale use in consumer products, healthcare, and medical applications, among others. Due to such rapid growth of nanomaterial manufacturing and use, these materials will inevitably be released into the environment. Currently little information exists on the fate and toxicological effects of nanoparticles in the environment including aquatic matrices. In this review, we discuss 1)possible ecological risks of silver nanomaterials as unbiodegradable and bioaccumulative contaminants, 2)environmental application of nanomaterials, 3) biological effects of nanomaterials to aquatic invertebrates and fishes, including biological fate and their indirect effects, 4)problems on nano-toxicity research, 5)regulatory science, and 6) nano-science and ecological risk. Here we highlight the need for further researches in order to understand the potential environmental/ecological hazard and risk of nanomaterials, with scientifically validated and environmentally relevant testing methods.","PeriodicalId":14585,"journal":{"name":"Japanese journal of environmental toxicology","volume":"8 1","pages":"19-32"},"PeriodicalIF":0.0,"publicationDate":"2009-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87229139","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}

引用次数: 0

Micronuclei and other Nuclear Abnormalities Formation in the Red Sea Bream, Pagrus major, Exposed to Polycyclic Aromatic Hydrocarbons 接触多环芳烃的红鲷的微核及其他核异常形成

Japanese journal of environmental toxicology Pub Date : 2009-01-01 DOI: 10.11403/JSET.12.33

J. Cheikyula, J. Koyama, S. Uno

引用次数: 6

Application of an In Situ Hepatic and Gill CYP1A Activity Assay to River Water Quality Monitoring Using the See-through Medaka, Oryzias latipes 肝脏和鳃CYP1A活性原位测定在河流水质监测中的应用

Japanese journal of environmental toxicology Pub Date : 2009-01-01 DOI: 10.11403/JSET.12.55

Akari Jagawa, Y. Sugaya, K. Goka, T. Sabo-Attwood, G. Chandler, S. Kashiwada

引用次数: 0

Effects of Chemicals and Metal Ions on Microcosms: Comparison of Community Metabolism to Single-Species Responses to Toxicants 化学物质和金属离子对微生物的影响:群落代谢与单一物种对毒物反应的比较

Japanese journal of environmental toxicology Pub Date : 2009-01-01 DOI: 10.11403/JSET.12.41

K. Sugiura

引用次数: 9

Toxicity evaluation of degradation products of refrigerants 制冷剂降解产物的毒性评价

Japanese journal of environmental toxicology Pub Date : 2009-01-01 DOI: 10.11403/JSET.12.1

M. Ema, M. Naya, Kikuo Yoshida, R. Nagaosa

{"title":"Toxicity evaluation of degradation products of refrigerants","authors":"M. Ema, M. Naya, Kikuo Yoshida, R. Nagaosa","doi":"10.11403/JSET.12.1","DOIUrl":"https://doi.org/10.11403/JSET.12.1","url":null,"abstract":"1.はじめに 1974年にローランドとモリーナが、成層圏に達したフロンが紫外線によって分解されて発生した塩素によるオゾン層破壊の可能性を指摘した(Molina and Rowland, 1974.)。1985年にはウィーン条約が締結され、1987年には「モントリオール議定書」が採択され、ヒトの健康及び環境保護のために、冷媒として使用されている特定フロン[Chlorofluorocarbon(CFC)の5物質] を1996年末までに全廃することとされた。特定フロンに代わって、「塩素を含まないこと、含んでいても分子内に水素を有し、成層圏に達する前に消滅しやすいこと」、「地球温暖化への影響が少ないこと」及び「毒性がないこと」を条 ABSTRACT The present paper summarizes the data available in the literature concerning toxicity of the degradation products of 1,1,1,2-tetrahydrofluoroethane(HFC-134a),which is widely used worldwide as a refrigerant, and 2,3,3,3-tetrafluoropropene(HFO-1234yf),which is developed as a refrigerant for new generation. There are many studies available for toxic effects of carbon dioxide(CO2)and carbon monoxide(CO)in humans and animals. General toxicity of excessive CO2 exposure in humans is well reported. However, information on reproductive and developmental toxicity of CO2 in humans and animals is inadequate for risk assessment. As for CO, further studies are required to evaluate the adverse effects of chronic exposure to low and near ambient levels of CO on development of fetuses and newborn infants in marginal condition because of high susceptibility to hypoxic effect in fetuses and newborn infants. There is a lack of information on toxicity of trifluoroacetic acid, carbonyl fluoride, hydrogen fluoride, and formic acid in humans and animals. Animal studies remain necessary for risk assessment of chemicals because it is difficult to find alternative methods to determine the toxic effect of chemicals.","PeriodicalId":14585,"journal":{"name":"Japanese journal of environmental toxicology","volume":"2000 1","pages":"1-18"},"PeriodicalIF":0.0,"publicationDate":"2009-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72761750","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}

引用次数: 0