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371.
Effect of long‐term exposure to aluminum and high‐fat diet on NTPDase and 5′‐nucleotidase activities in lymphocytes and platelets of rats 下载免费PDF全文
Rosilene Rodrigues Kaizer Eduarda Costa Cínthia Melazzo de Andrade Roberta Schmatz Jessié Martins Gutierres Danieli Brolo Martins Vera Maria Morsch Maria Rosa Chitolina Schetinger 《环境质量管理》2017,27(1):67-73
Aluminum is one of the most abundant metals in the earth's crust. Although it shows no known biological function, it is recognized as an adjuvant in vaccines for human and veterinary uses. This study aims to evaluate the role of lifestyle and environment in the promotion of chronic disease. In it, we associated two factors: chronic exposure to aluminum and high‐fat diets. Thus, we aimed to determine whether the association of long‐term exposure to aluminum and high‐fat diets affects the NTPDase and 5′‐nucleotidase activities in the blood platelets and lymphocytes obtained from the mesenteric lymph nodes of young rats. In fact, the ectonucleotidase activities were shown to be upregulated upon exposure to aluminum plus high‐fat diets. As a result, we can suggest that the progressive upregulation of ectonucleotidase activities that we observed could be controlling the extent of inflammation and immune response. 相似文献
372.
Alfredo Madariaga-Navarrete Blanca Rosa Rodríguez-Pastrana José Roberto Villagómez-Ibarra Otilio Arturo Acevedo-Sandoval Gregory Perry 《Journal of environmental science and health. Part. B》2017,52(6):367-375
The objective of the present study was to examine a biological model under greenhouse conditions for the bioremediation of atrazine contaminated soils. The model consisted in a combination of phytoremediation (using Phaseolus vulgaris L.) and rhizopheric bio-augmentation using native Trichoderma sp., and Rhizobium sp. microorganisms that showed no inhibitory growth at 10,000 mg L?1 of herbicide concentration. 33.3 mg of atrazine 50 g?1 of soil of initial concentration was used and an initial inoculation of 1 × 109 UFC mL?1 of Rhizobium sp. and 1 × 105 conidia mL?1 of Trichoderma sp. were set. Four treatments were arranged: Bean + Trichoderma sp. (B+T); Bean + Rhizobium sp. (BR); Bean + Rhizobium sp. + Trichoderma sp. (B+R+T) and Bean (B). 25.51 mg of atrazine 50 g?1 of soil (76.63%) was removed by the B+T treatment in 40 days (a = 0.050, Tukey). This last indicate that the proposed biological model and methodology developed is useful for atrazine contaminated bioremediation agricultural soils, which can contribute to reduce the effects of agrochemical abuse. 相似文献
373.
Galvez-Cloutier R Saminathan SK Boillot C Triffaut-Bouchet G Bourget A Soumis-Dugas G 《Environmental management》2012,49(5):1037-1053
Increasing phosphorus (P) content and decreasing water quality of Saint-Augustin Lake, Quebec City, Canada, has led to implementation
of an Integrated Watershed Management Plan to restore the lake. As a part of the plan, the effects of different restoration
techniques on lake water quality and biological community (i.e., biological compatibility) were assessed during an isolated
water enclosure study and laboratory microcosm assay, respectively. The restoration techniques include: (i) coagulation of
P by alum only (20 mg L−1), (ii) active capping of sediments using a calcite layer of 10 cm, and (iii) a complete method involving both alum coagulation
and calcite capping. The results showed that the total P (TP) was greatly decreased (76–95 %) by alum + calcite, followed
by calcite only (59–84 %). Secchi depth was 106 % greater and chlorophyll a concentrations were declined by 19–78 % in the
enclosure which received both alum and calcite. Results of the biological compatibility test showed that total phytoplankton
biomass declined by 31 % in microcosms composed of alum + calcite. No significant (P > 0.05) toxic effect was found on the survival of Daphnia magna and Hyalella azteca in both alum only and alum + calcite microcosms. Although the alum + calcite technique impaired the survival of Chironomus riparius, the midge emergence was much higher compared to alum only and control. Overall, the alum + calcite application was effective
in controlling P release from sediment and lowering water column P concentrations, and thus improving the water quality and
aquatic life of Saint-Augustin Lake. However, the TP concentrations are still higher than the critical limit (20 μg L−1) for aquatic life and the water column remained in the eutrophic state even after treatment. Increased TP concentrations,
to higher than ambient levels of the lake, in the water column of all four enclosures, due to bioturbation artefact triggered
by the platform installation, likely cause insufficient dosages of alum and/or calcite applied and reduced their effectiveness. 相似文献
374.
Dayana Moscardi dos Santos Gustavo Souza Santos Marta Margarete Cestari Ciro Alberto de Oliveira Ribeiro Helena Cristina Silva de Assis Flavia Yamamoto Izonete Cristina Guiloski Mary Rosa Rodrigues de Marchi Rosalinda Carmela Montone 《Environmental science and pollution research international》2014,21(4):3166-3174
The toxicity of butyltin compounds (BTs), mainly tributyltin (TBT), has been reported in different organisms. However, such an analysis in fish after field exposure with reference to the related biomarkers has not been commonly observed in the literature. This study presents the uptake of BTs in the liver of a neotropical marine catfish Cathorops spixii in Paranagua Bay, an important estuarine system located in southern Brazil. Two different areas, close to and distant from the harbor, were used for chemical analysis evaluation of hepatotoxicity through genetic, enzymatic, and histopathological biomarkers. The presence of polycyclic aromatic hydrocarbons in bile was also considered as a biomarker. The results showed a significant relationship between TBT levels and the inhibition of biotransformation enzymes and high occurrence of melanomacrophages in fish collected close to the harbor site. These effects were linked to the absence of TBT metabolites in the liver. In the second site, the presence of DBT was associated with an increase in EROD and GST activity. The larger amount of DNA damage as well as the highest oxidative stress was noted in fish from the less TBT-polluted area, where DBT and bile PAHs occurred. These findings showed different impact levels due to or increased by the chronic exposure of biota to BTs. 相似文献
375.
Total concentrations and fractionation of Cu, Zn and Pb in seven operationally defined phases (exchangeable, carbonates, manganese oxides, organic complexes, amorphous iron oxides, crystalline iron oxides and residual) were determined in sediments colonised by the halophyte species Halimione portulacoides and Spartina maritima in a Tagus estuary salt marsh (Portugal). We aimed to determine whether the speciation of these metals was different in areas colonised by each halophyte. Higher concentrations of Cu, Zn and, in particular Pb, were found in the rhizosphere of S. maritima than in the root sediments of H. portulacoides. Geochemical fractionation of Cu, Zn and Pb in sediments of the salt marsh depended upon the metal, and for Zn and Pb clearly varied with depth and with the colonising species. The higher redox potential observed in sediments colonised by H. portulacoides may in part explain the observed differences in the speciation of Cu, Zn and Pb. 相似文献
376.
Cerdeira AL Desouza MD Queiroz SC Ferracini VL Bolonhezi D Gomes MA Rosa MA Balderrama O Rampazzo P Queiroz RH Neto CF Matallo MB 《Journal of environmental science and health. Part. B》2007,42(6):635-639
This study was undertaken to evaluate the degradation and mobility of the herbicide tebuthiuron (N-[5-(1,1-dimethylethyl)-1,3,4-thiadiazol-2-yl]-N,N'-dimethylurea) in soil under field conditions, and its potential for leaching and groundwater contamination. A watershed, Espraiado, located over a recharge area in Brazil, was chosen for soil and water studies. At Espraiado, water samples were collected from seven wells at intervals of three months from March 2004 to June 2006 and analyzed for tebuthiuron. Other samples were taken from city wells located outside of the recharge area. To assess the potential movement to the aquifer, tebuthiuron was also applied to trial plots at the recommended label rate of 1.0 kg/ha a.i. in May of 2004, with and without sugarcane coverage, on sandy soil. Soil samples were collected during the years of 2004 and 2005, at depths intervals of 20 cm from soil surface down to 120 cm and analyzed for tebuthiuron at zero, 3, 30, 60, 90, 120, 150, 180, 240, and 300 days after application. There was no clear effect of sugarcane coverage on the tebuthiuron degradation in soils, but it moved faster into the soil where there was no cover. After 180 days there were no measurable residues in the soil, and tebuthiuron was not found below 40 cm depth in any time. Tebuthiuron had a half-life of 20 days under those conditions. No tebuthiuron residue was found in ground water samples at any sampling time. 相似文献
377.
Septevani Athanasia Amanda Burhani Dian Sampora Yulianti Indriyati Shobih Rosa Erlyta Septa Sondari Dewi Margyaningsih Nur Ita Septiyani Melati Yurid Fitra Handayani Aniek Sri 《Journal of Polymers and the Environment》2022,30(9):3901-3913
Journal of Polymers and the Environment - Cellulose nanopaper (CNP) is a new potential candidate for flexible biopolymer substrate made of nanocellulose (NC). We systematically studied the effect... 相似文献
378.
de Oliveira Sueli Aparecida Camani Paulo Henrique da Silva Barbosa Rennan Felix Rocha Daniel Belchior Mitra Sushanta K. dos Santos Rosa Derval 《Journal of Polymers and the Environment》2022,30(1):270-294
Journal of Polymers and the Environment - There is a scientific consensus that the use of membranes for water filtration presents itself as a promising research area for removing a wide range of... 相似文献
379.
Takuissu G. R. Kenmoe S. Ndip L. Ebogo-Belobo J. T. Kengne-Ndé C. Mbaga D. S. Bowo-Ngandji A. Oyono M. G. Kenfack-Momo R. Tchatchouang S. Kenfack-Zanguim J. Lontuo Fogang R. Zeuko’o Menkem E. Kame-Ngasse G. I. Magoudjou-Pekam J. N. Nkie Esemu S. Veneri C. Mancini P. Bonanno Ferraro G. Iaconelli M. Suffredini E. La Rosa G. 《Food and environmental virology》2022,14(3):223-235
Food and Environmental Virology - Hepatitis E virus (HEV) is responsible for acute hepatitis in humans, through foodborne, zoonotic, and waterborne transmission routes. This study aimed to assess... 相似文献
380.
Pironti Concetta Ricciardi Maria Proto Antonio Cucciniello Raffaele Fiorentino Antonino Fiorillo Rosa Motta Oriana 《Environmental science and pollution research international》2022,29(20):29385-29390
Environmental Science and Pollution Research - In this study, we evaluated indoor air quality to highlight the effects of environmental pollution in the field of cultural heritage. In particular,... 相似文献