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[PMID]:28822260
[Au] Autor:Omouri Z; Hawari J; Fournier M; Robidoux PY
[Ad] Endereço:INRS-Institut Armand Frappier, 531 boulevard des Prairies, Laval, Québec, Canada H7V 1B7; National Research Council of Canada, 6100 Avenue Royalmount, Montréal, Québec, Canada H4P 2R2. Electronic address: Zohra.Omouri@iaf.inrs.ca.
[Ti] Título:Bioavailability and chronic toxicity of bismuth citrate to earthworm Eisenia andrei exposed to natural sandy soil.
[So] Source:Ecotoxicol Environ Saf;147:1-8, 2018 Jan.
[Is] ISSN:1090-2414
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:The present study describes bioavailability and chronic effects of bismuth to earthworms Eisenia andrei using OECD reproduction test. Adult earthworms were exposed to natural sandy soil contaminated artificially by bismuth citrate. Average total concentrations of bismuth in soil recovered by HNO digestion ranged from 75 to 289mg/kg. Results indicate that bismuth decreased significantly all reproduction parameters of Eisenia andrei at concentrations ≥ 116mg/kg. However, number of hatched cocoons and number of juveniles seem to be more sensitive than total number of cocoons, as determined by IC ; i.e., 182, 123 and > 289mg/kg, respectively. Bismuth did not affect Eisenia andrei growth and survival, and had little effect on phagocytic efficiency of coelomocytes. The low immunotoxicity effect might be explained by the involvement of other mechanisms i.e. bismuth sequestered by metal-binding compounds. After 28 days of exposure bismuth concentrations in earthworms tissue increased with increasing bismuth concentrations in soil reaching a stationary state of 21.37mg/kg dry tissue for 243mg Bi/kg dry soil total content. Data indicate also that after 56 days of incubation the average fractions of bismuth available extracted by KNO aqueous solution in soil without earthworms varied from 0.0051 to 0.0229mg/kg, while in soil with earthworms bismuth concentration ranged between 0.310-1.347mg/kg dry soil. We presume that mucus and chelating agents produced by earthworms and by soil or/and earthworm gut microorganisms could explain this enhancement, as well as the role of dermal and ingestion routes of earthworms uptake to soil contaminant.
[Mh] Termos MeSH primário: Monitoramento Ambiental/métodos
Oligoquetos/efeitos dos fármacos
Compostos Organometálicos/toxicidade
Poluentes do Solo/toxicidade
Solo/química
[Mh] Termos MeSH secundário: Animais
Disponibilidade Biológica
Biomarcadores/análise
Relação Dose-Resposta a Droga
Nível de Efeito Adverso não Observado
Oligoquetos/metabolismo
Compostos Organometálicos/análise
Compostos Organometálicos/metabolismo
Fagocitose/efeitos dos fármacos
Reprodução/efeitos dos fármacos
Poluentes do Solo/análise
Poluentes do Solo/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Biomarkers); 0 (Organometallic Compounds); 0 (Soil); 0 (Soil Pollutants); HS813P8QPX (bismuth tripotassium dicitrate)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180308
[Lr] Data última revisão:
180308
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170820
[St] Status:MEDLINE


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[PMID]:27775689
[Au] Autor:Yang J; Wang T; Li Y; Yao W; Ji X; Wu Q; Han L; Han R; Yan W; Yuan J; Ni C
[Ad] Endereço:Department of Occupational Medicine and Environmental Health and Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, China.
[Ti] Título:Earthworm extract attenuates silica-induced pulmonary fibrosis through Nrf2-dependent mechanisms.
[So] Source:Lab Invest;96(12):1279-1300, 2016 12.
[Is] ISSN:1530-0307
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Silicosis is an occupational pulmonary fibrosis caused by inhalation of silica (SiO ) and there are no ideal drugs to treat this disease. Earthworm extract (EE), a natural nutrient, has been reported to have anti-inflammatory, antioxidant, and anti-apoptosis effects. The purpose of the current study was to test the protective effects of EE against SiO -induced pulmonary fibrosis and to explore the underlying mechanisms using both in vivo and in vitro models. We found that treatment with EE significantly reduced lung inflammation and fibrosis and improved lung structure and function in SiO -instilled mice. Further mechanistic investigations revealed that EE administration markedly inhibited SiO -induced oxidative stress, mitochondrial apoptotic pathway, and epithelial-mesenchymal transition in HBE and A549 cells. Furthermore, we demonstrate that Nrf2 activation partly mediates the interventional effects of EE against SiO -induced pulmonary fibrosis. Our study has identified EE to be a potential anti-oxidative, anti-inflammatory, and anti-fibrotic drug for silicosis.
[Mh] Termos MeSH primário: Antioxidantes/uso terapêutico
Modelos Animais de Doenças
Pulmão/efeitos dos fármacos
Materia Medica/uso terapêutico
Oligoquetos/química
Fibrose Pulmonar/prevenção & controle
Silicose/tratamento farmacológico
Extratos de Tecidos/uso terapêutico
[Mh] Termos MeSH secundário: Animais
Anti-Inflamatórios não Esteroides/administração & dosagem
Anti-Inflamatórios não Esteroides/farmacologia
Anti-Inflamatórios não Esteroides/uso terapêutico
Antioxidantes/administração & dosagem
Antioxidantes/farmacologia
Apoptose/efeitos dos fármacos
Linhagem Celular
Células Cultivadas
Transição Epitelial-Mesenquimal/efeitos dos fármacos
Injeções Intraperitoneais
Pulmão/metabolismo
Pulmão/patologia
Pulmão/fisiopatologia
Masculino
Materia Medica/administração & dosagem
Materia Medica/farmacologia
Camundongos Endogâmicos C57BL
Fator 2 Relacionado a NF-E2/agonistas
Fator 2 Relacionado a NF-E2/antagonistas & inibidores
Fator 2 Relacionado a NF-E2/genética
Fator 2 Relacionado a NF-E2/metabolismo
Estresse Oxidativo/efeitos dos fármacos
Fibrose Pulmonar/etiologia
Fibrose Pulmonar/imunologia
Interferência de RNA
Distribuição Aleatória
Mucosa Respiratória/citologia
Mucosa Respiratória/efeitos dos fármacos
Mucosa Respiratória/metabolismo
Mucosa Respiratória/patologia
Silicose/metabolismo
Silicose/patologia
Silicose/fisiopatologia
Organismos Livres de Patógenos Específicos
Extratos de Tecidos/administração & dosagem
Extratos de Tecidos/farmacologia
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Anti-Inflammatory Agents, Non-Steroidal); 0 (Antioxidants); 0 (Materia Medica); 0 (NF-E2-Related Factor 2); 0 (Tissue Extracts)
[Em] Mês de entrada:1706
[Cu] Atualização por classe:180306
[Lr] Data última revisão:
180306
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161025
[St] Status:MEDLINE
[do] DOI:10.1038/labinvest.2016.101


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[PMID]:29391009
[Au] Autor:Huang C; Li W; Zhang Q; Chen L; Chen W; Zhang H; Ni Y
[Ad] Endereço:Department of Pharmacy, Wuhan No.1 Hospital (Wuhan Integrated TCM & Western Medicine Hospital), 215 Zhongshan Avenue, Wuhan, 430022, China.
[Ti] Título:Anti-inflammatory activities of Guang-Pheretima extract in lipopolysaccharide-stimulated RAW 264.7 murine macrophages.
[So] Source:BMC Complement Altern Med;18(1):46, 2018 Feb 01.
[Is] ISSN:1472-6882
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: Guang-Pheretima, which is originated from Pheretima aspergillum, has been documented in academic Chinese herbal studies for nearly 2000 years for its prominent treating effects of various inflammatory diseases such as asthma, cough and fever. However, the anti-inflammatory activity and mechanism of Guang-Pheretima has been rarely reported. Hence, we investigated the inhibitory effect and the underlying mechanism of Guang-Pheretima aqueous extracts on inflammatory response in RAW 264.7 cells. METHOD: RAW 264.7 macrophages were pretreated with various concentrations of Guang-Pheretima decoction (GPD) or protein-free Guang-Pheretima decoction (PF-GPD) and subsequently stimulated with lipopolysaccharide (LPS) to trigger the inflammatory response. Productions of nitric oxide (NO) were determined by Griess reaction, and prostaglandin E (PGE ), tumor necrosis factor-α (TNF-α), interleukin (IL)-1ß, IL-6 were measured by enzyme-linked immunosorbent assays (ELISA). The protein expressions and messenger ribonucleic acid (mRNA) amounts of inducible nitric oxide synthase (iNOS) and cyclooxygenase (COX)-2 were analyzed by Western Blot and Real-Time polymerase chain reaction (PCR), respectively. Finally, the translocation of nuclear factor (NF)-κB was observed by Western Blot. RESULTS: GPD of the experimental concentrations showed no anti-inflammatory activity. In contrast, PF-GPD at concentrations of 40-320 µg/mL significantly inhibited NF-κB activation and reduced the production of inflammatory mediators, such as NO, PGE , TNF-α, as well as the related key synthases including iNOS and COX-2. Moreover, PF-GPD markedly suppressed the release of inflammatory cytokines, such as IL-1ß and IL-6. CONCLUSION: These results demonstrate the excellent anti-inflammatory properties of PF-GPD, and suggest that Guang-Pheretima may be used to treat and prevent certain inflammatory diseases.
[Mh] Termos MeSH primário: Anti-Inflamatórios/farmacologia
Produtos Biológicos/farmacologia
Macrófagos/efeitos dos fármacos
[Mh] Termos MeSH secundário: Animais
Anti-Inflamatórios/química
Produtos Biológicos/química
Sobrevivência Celular/efeitos dos fármacos
Ciclo-Oxigenase 2/metabolismo
Citocinas/análise
Citocinas/metabolismo
Lipopolissacarídeos/toxicidade
Macrófagos/metabolismo
Camundongos
Oligoquetos/química
Células RAW 264.7
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Anti-Inflammatory Agents); 0 (Biological Products); 0 (Cytokines); 0 (Lipopolysaccharides); EC 1.14.99.1 (Cyclooxygenase 2)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180301
[Lr] Data última revisão:
180301
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180203
[St] Status:MEDLINE
[do] DOI:10.1186/s12906-018-2086-z


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[PMID]:29017112
[Au] Autor:Miao J; Chen X; Xu T; Yin D; Hu X; Sheng GD
[Ad] Endereço:State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China.
[Ti] Título:Bioaccumulation, distribution and elimination of lindane in Eisenia foetida: The aging effect.
[So] Source:Chemosphere;190:350-357, 2018 Jan.
[Is] ISSN:1879-1298
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Soil aging will influence the chemical speciation of pesticides, thus affecting the uptake route to be bioavailable to the organism. So far, studies on the possible effects of the uptake route on the distribution and elimination of pesticides in the organism that also considers effects of aging are limited. In our study, Eisenia fetida was exposed to 4.5 mg kg lindane aging for 0, 30 and 180 d, and the accumulation, distribution and elimination of lindane in the earthworms were analyzed. The results showed that the 6 h Tenax-extracted fraction exhibited a good linear correlation with the lindane accumulated in the earthworms. With aging time increasing, the bioaccumulation of lindane decreased and the accumulative balance was more easily reached in the earthworms. Lindane distributions were found in the whole earthworm and the proportions of lindane content at sub-organism level and the mass distribution of each fraction were similar for 0 d and 180 d aged groups. The foregut accumulated the highest content of lindane (20%) relative to its low mass distribution proportion (10%). The elimination rate of lindane in the earthworms decreased with aging time extending. Our conclusion was that the 6 h Tenax extraction could be used to assess the bioavailability of aging lindane. Although soil aging decreased the bioavailability of lindane, the soil-bound lindane entered the earthworm through dietary route would take longer to depurate from the organisms than free lindane, which implied the potential ecological risk of bound pesticide residues.
[Mh] Termos MeSH primário: Lindano/farmacocinética
Oligoquetos/metabolismo
[Mh] Termos MeSH secundário: Animais
Disponibilidade Biológica
Inseticidas/metabolismo
Inseticidas/farmacocinética
Resíduos de Praguicidas/metabolismo
Resíduos de Praguicidas/farmacocinética
Solo/química
Poluentes do Solo/análise
Poluentes do Solo/farmacocinética
Fatores de Tempo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Insecticides); 0 (Pesticide Residues); 0 (Soil); 0 (Soil Pollutants); 59NEE7PCAB (Lindane)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180214
[Lr] Data última revisão:
180214
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171011
[St] Status:MEDLINE


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[PMID]:28992482
[Au] Autor:Verdú I; Trigo D; Martínez-Guitarte JL; Novo M
[Ad] Endereço:Soil Zoology Group, Departamento de Zoología y Antropología Física, Facultad de Biología, Complutense University, Jose Antonio Nováis s/n, 28040 Madrid, Spain.
[Ti] Título:Bisphenol A in artificial soil: Effects on growth, reproduction and immunity in earthworms.
[So] Source:Chemosphere;190:287-295, 2018 Jan.
[Is] ISSN:1879-1298
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:The application of biosolids in agricultural fields is increasing annually. They contain not only nutrients but also xenobiotics, such as Bisphenol A (BPA). These compounds are not regulated in the use of biosolids in agriculture, which highlights the need to assess their effects on soil life, of which earthworms are most abundant of the animal representatives. In this study the effect of BPA on life-history parameters, such as mortality, growth and reproduction, and on immunity, is evaluated for Dendrobaena veneta and Eisenia fetida. Sublethal concentrations were evaluated by a modified OECD artificial soil test. Decline in growth with increasing concentration of BPA was detected during the first two weeks and the opposite effect for the next two, although these differences were only significant at the highest concentration. Reproduction traits were only significantly different for E. fetida, for which the number of juveniles decreased at higher concentrations, thus showing different sensitivity in both species. By using a contact test, the potentially harmful effect of direct contact with BPA was shown to be much higher than in soil (resembling natural) conditions. Finally, results indicate that BPA may not affect the immune system of these animals, at least in terms of coelomocyte viability.
[Mh] Termos MeSH primário: Compostos Benzidrílicos/farmacologia
Oligoquetos/efeitos dos fármacos
Fenóis/farmacologia
Solo/química
[Mh] Termos MeSH secundário: Animais
Relação Dose-Resposta a Droga
Oligoquetos/crescimento & desenvolvimento
Oligoquetos/imunologia
Oligoquetos/fisiologia
Reprodução/efeitos dos fármacos
Poluentes do Solo/análise
Poluentes do Solo/farmacologia
Especificidade da Espécie
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Benzhydryl Compounds); 0 (Phenols); 0 (Soil); 0 (Soil Pollutants); MLT3645I99 (bisphenol A)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180214
[Lr] Data última revisão:
180214
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171010
[St] Status:MEDLINE


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[PMID]:28464547
[Au] Autor:Briones MJI; Schmidt O
[Ad] Endereço:Departamento de Ecología y Biología Animal, Universidad de Vigo, Vigo, Spain.
[Ti] Título:Conventional tillage decreases the abundance and biomass of earthworms and alters their community structure in a global meta-analysis.
[So] Source:Glob Chang Biol;23(10):4396-4419, 2017 10.
[Is] ISSN:1365-2486
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:The adoption of less intensive soil cultivation practices is expected to increase earthworm populations and their contributions to ecosystem functioning. However, conflicting results have been reported on the effects of tillage intensity on earthworm populations, attributed in narrative reviews to site-dependent differences in soil properties, climatic conditions and agronomic operations (e.g. fertilization, residue management and chemical crop protection). We present a quantitative review based on a global meta-analysis, using paired observations from 165 publications performed over 65 years (1950-2016) across 40 countries on five continents, to elucidate this long-standing unresolved issue. Results showed that disturbing the soil less (e.g. no-tillage and conservation agriculture [CA]) significantly increased earthworm abundance (mean increase of 137% and 127%, respectively) and biomass (196% and 101%, respectively) compared to when the soil is inverted by conventional ploughing. Earthworm population responses were more pronounced when the soil had been under reduced tillage (RT) for a long time (>10 years), in warm temperate zones with fine-textured soils, and in soils with higher clay contents (>35%) and low pH (<5.5). Furthermore, retaining organic harvest residues amplified this positive response to RT, whereas the use of the herbicide glyphosate did not significantly affect earthworm population responses to RT. Additional meta-analyses confirmed that epigeic and, more importantly, the bigger-sized anecic earthworms were the most sensitive ecological groups to conventional tillage. In particular, the deep burrower Lumbricus terrestris exhibited the strongest positive response to RT, increasing in abundance by 124% more than the overall mean of all 13 species analysed individually. The restoration of these two important ecological groups of earthworms and their burrowing, feeding and casting activities under various forms of RT will ensure the provision of ecosystem functions such as soil structure maintenance and nutrient cycling by "nature's plough."
[Mh] Termos MeSH primário: Agricultura
Biomassa
Oligoquetos
[Mh] Termos MeSH secundário: Animais
Ecossistema
Comportamento Alimentar
Dinâmica Populacional
Solo
Microbiologia do Solo
[Pt] Tipo de publicação:JOURNAL ARTICLE; META-ANALYSIS
[Nm] Nome de substância:
0 (Soil)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:180123
[Lr] Data última revisão:
180123
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170503
[St] Status:MEDLINE
[do] DOI:10.1111/gcb.13744


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[PMID]:28951040
[Au] Autor:Shi Y; Xu X; Chen J; Liang R; Zheng X; Shi Y; Wang Y
[Ad] Endereço:State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
[Ti] Título:Antioxidant gene expression and metabolic responses of earthworms (Eisenia fetida) after exposure to various concentrations of hexabromocyclododecane.
[So] Source:Environ Pollut;232:245-251, 2018 Jan.
[Is] ISSN:1873-6424
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Hexabromocyclododecane (HBCD), a ubiquitous suspected contaminant, is one of the world's most prominent brominated flame retardants (BFRs). In the present study, earthworms (Eisenia fetida) were exposed to HBCD. The expression of selected antioxidant enzyme genes was measured, and the metabolic responses were assessed using nuclear magnetic resonance (NMR) to identify the molecular mechanism of the antioxidant stress reaction and the metabolic reactions of earthworms to HBCD. A significant up-regulation (p < 0.05) of superoxide dismutase (SOD) gene expression was detected, with the highest gene expression level of SOD appearing at a dose of 400 mg kg dw (2.06-fold, p < 0.01). However, the glutathione transferase (GST) gene expression levels did not differ significantly (p > 0.05). Principal component analysis (PCA) of the metabolic responses showed that all groups could be clearly differentiated, and the highest concentration dose group was the most distant from the control group. Except for fumarate, the measured metabolites, which included adenosine triphosphate (ATP), valine, lysine, glycine, betaine and lactate, revealed significant (p < 0.05) increases after 14 days of exposure to HBCD. HBCD likely induces high levels of anaerobic respiration, which would result in high levels of ATP and lead to the disintegration of proteins into amino acids, including valine and lysine, to produce energy. The observed changes in osmotic pressure were indicative of damage to the membrane structure. Furthermore, this study showed that NMR-based metabolomics was a more sensitive tool than measuring the gene expression levels for elucidating the mode of toxicity of HBCD in earthworm exposure studies.
[Mh] Termos MeSH primário: Antioxidantes/metabolismo
Expressão Gênica/efeitos dos fármacos
Hidrocarbonetos Bromados/toxicidade
Oligoquetos/fisiologia
Poluentes do Solo/toxicidade
[Mh] Termos MeSH secundário: Animais
Retardadores de Chama/metabolismo
Glutationa Transferase/genética
Glutationa Transferase/metabolismo
Espectroscopia de Ressonância Magnética
Metabolômica
Oligoquetos/metabolismo
Análise de Componente Principal
Superóxido Dismutase/genética
Superóxido Dismutase/metabolismo
Regulação para Cima
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Antioxidants); 0 (Flame Retardants); 0 (Hydrocarbons, Brominated); 0 (Soil Pollutants); 5I9835JO3M (hexabromocyclododecane); EC 1.15.1.1 (Superoxide Dismutase); EC 2.5.1.18 (Glutathione Transferase)
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180119
[Lr] Data última revisão:
180119
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170928
[St] Status:MEDLINE


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[PMID]:28452028
[Au] Autor:Kwak JI; Park JW; An YJ
[Ad] Endereço:Department of Environmental Health Science, Konkuk University, 210 Neungdong-ro, Gwangjin-gu, Seoul, 05029, South Korea.
[Ti] Título:Effects of silver nanowire length and exposure route on cytotoxicity to earthworms.
[So] Source:Environ Sci Pollut Res Int;24(16):14516-14524, 2017 Jun.
[Is] ISSN:1614-7499
[Cp] País de publicação:Germany
[La] Idioma:eng
[Ab] Resumo:To accurately evaluate the environmental toxicity of silver nanowires (AgNWs), it is necessary to characterize how the cytotoxicity of these nanomaterials is affected by the route of exposure. However, few studies have addressed the exposure route or mechanism of toxicity of nanomaterials, particularly of nanowires, in living organisms. In this study, we therefore analyzed the main exposure route of AgNWs in vitro, using earthworms (Eisenia andrei) as a model system, via flow cytometry. We subsequently examined the in vivo toxicity of AgNWs to earthworms in soil. These tests revealed that intracellular esterase activity was correlated with adsorption of the nanowires to the surfaces of coelomocytes in vitro, and that in vivo cytotoxicity resulted mainly from oral, rather than dermal, exposure to the nanowires. Overall, shorter AgNWs (10 µm) were more toxic than longer AgNWs (20 µm). To our knowledge, this study is the first report regarding the ecotoxicity of nanowires to earthworms in soil. Our findings provide important information to help assess the risk of toxic AgNW contamination of soil ecosystems.
[Mh] Termos MeSH primário: Nanofios/toxicidade
Prata/toxicidade
Poluentes do Solo/toxicidade
[Mh] Termos MeSH secundário: Animais
Oligoquetos/efeitos dos fármacos
Solo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Soil); 0 (Soil Pollutants); 3M4G523W1G (Silver)
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180103
[Lr] Data última revisão:
180103
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170429
[St] Status:MEDLINE
[do] DOI:10.1007/s11356-017-9054-x


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[PMID]:27776237
[Au] Autor:Li L; Yang D; Song Y; Shi Y; Huang B; Yan J; Dong X
[Ad] Endereço:Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
[Ti] Título:Effects of bifenthrin exposure in soil on whole-organism endpoints and biomarkers of earthworm Eisenia fetida.
[So] Source:Chemosphere;168:41-48, 2017 Feb.
[Is] ISSN:1879-1298
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:In this study, toxic effects of bifenthrin in soil on earthworms were evaluated by acute and chronic toxic endpoints combined with a set of biomarkers. Bifenthrin was moderately toxic in 72-h filter paper test and low toxic in 14-d soil test. The exposure of earthworms to bifenthrin-polluted soil for 8 weeks showed that cocoons were inhibited by high dose of bifenthrin, and larvae were stimulated by low dose but inhibited by high dose of bifenthrin. Furthermore, 28-d soil test on the responses of enzymes associated with antioxidation and detoxification in worms showed that peroxidase (POD) was stimulated by bifenthrin, superoxide dismutase (SOD) inhibited in the early period but stimulated in the later period, glutathione S- transferase (GST) inhibited in the later period, and ethoxyresorufin-O-deethylase (EROD) inhibited at day 3 but markedly stimulated at day 28 at high dose. The different responses of these indexes indicated that multi indexes should be jointly taken into account for comprehensive evaluation of the environmental risk of contaminants in soil.
[Mh] Termos MeSH primário: Oligoquetos/efeitos dos fármacos
Piretrinas/toxicidade
Poluentes do Solo/toxicidade
[Mh] Termos MeSH secundário: Animais
Biomarcadores/metabolismo
China
Oligoquetos/enzimologia
Oligoquetos/crescimento & desenvolvimento
Oligoquetos/fisiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Biomarkers); 0 (Pyrethrins); 0 (Soil Pollutants); 6B66JED0KN (bifenthrin)
[Em] Mês de entrada:1702
[Cu] Atualização por classe:171212
[Lr] Data última revisão:
171212
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161025
[St] Status:MEDLINE


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[PMID]:28844437
[Au] Autor:Villar I; Alves D; Mato S
[Ad] Endereço:Department of Ecology and Animal Biology, University of Vigo, 36310 Vigo, Spain. Electronic address: iriavillar@uvigo.es.
[Ti] Título:Product quality and microbial dynamics during vermicomposting and maturation of compost from pig manure.
[So] Source:Waste Manag;69:498-507, 2017 Nov.
[Is] ISSN:1879-2456
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:This research evaluates, through microbial dynamics, the use of earthworms Eisenia andrei for maturation of pre-composted pig manure in comparison with maturation under static conditions and with vermicomposting of fresh pig manure. Therefore, two substrates were used (fresh and pre-composted pig manure) and four treatments were developed: fresh manure vermicomposting, control of fresh manure without earthworms, pre-composting followed by vermicomposting and static maturation of pre-composted manure. In order to determine the microbial dynamics, the enzymatic activities and profiles of phospholipid fatty acids (PLFAs) were evaluated over a 112-days period. Physicochemical and biological parameters of the obtained products were also analyzed. The presence of earthworms significantly reduced (p<0.05) microbial biomass and all the microbial groups (Gram+bacteria, Gram-bacteria, and fungi) in both substrates. The enzymatic activities (cellulase, ß-glucosidase and acid phosphatase) behaved in a significantly distinctive manner (p<0.05) depending on the treatment. Microbial communities had significant correlations (p<0.05) with hydrolytic activities during static maturation of pre-composted manure. This indicates a direct effect of microbiota evolution on the degradative processes; however, complex earthworm-microbiota interactions were established in the presence of E. andrei. After earthworms' removal from vermicompost of fresh substrate at 70day, an increase in Gram + (4.4 times), Gram - (3.8 times) and fungi (2.8 times) were observed and, although the vermicompost achieved quality values, it is necessary to optimize the vermicompost aging phase period to improve the stability. Static maturation presented stability on microbial dynamics that indicated a slow degradation of organic compounds so that, maturation of pre-composted manure through vermicomposting is better option.
[Mh] Termos MeSH primário: Biodegradação Ambiental
Esterco/microbiologia
Eliminação de Resíduos
[Mh] Termos MeSH secundário: Animais
Oligoquetos
Suínos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Manure)
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171108
[Lr] Data última revisão:
171108
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170829
[St] Status:MEDLINE



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