Conteúdo de minerais em ossos e no fígado de ovinos com ou sem periodontite

Universidade Federal do Pará. Faculdade de Medicina Veterinária. Castanhal, PA, Brasil.Universidade Federal do Pará. Faculdade de Medicina Veterinária. Castanhal, PA, Brasil.Universidade Federal do Pará. Faculdade de Medicina Veterinária. Castanhal, PA, Brasil.Universidade Federal Rural do Rio de Janeiro. Instituto de Zootecnia. Seropédica, RJ, Brasil.Universidade Federal Rural do Rio de Janeiro. Instituto de Zootecnia. Seropédica, RJ, Brasil.Universidade Federal Rural do Rio de Janeiro. Instituto de Zootecnia. Seropédica, RJ, Brasil.Universidade Federal Rural do Rio de Janeiro. Instituto de Veterinária. Seropédica, RJ, Brasil.Universidade Federal Rural do Rio de Janeiro. Instituto de Veterinária. Seropédica, RJ, Brasil.Universidade Federal Rural do Rio de Janeiro. Instituto de Veterinária. Seropédica, RJ, Brasil.Instituto Federal do Pará. Marabá, PA, Brasil.Instituto Federal do Pará. Marabá, PA, Brasil.Instituto Federal do Pará. Marabá, PA, Brasil.Universidade Federal do Sul e Sudoeste do Pará. Xinguara, PA, Brasil.Universidade Federal do Sul e Sudoeste do Pará. Xinguara, PA, Brasil.Universidade Federal do Sul e Sudoeste do Pará. Xinguara, PA, Brasil.Ministério da Saúde. Secretaria de Vigilância em Saúde e Ambiente. Instituto Evandro Chagas. Ananindeua, PA, Brasil.Ministério da Saúde. Secretaria de Vigilância em Saúde e Ambiente. Instituto Evandro Chagas. Ananindeua, PA, Brasil.Ministério da Saúde. Secretaria de Vigilância em Saúde e Ambiente. Instituto Evandro Chagas. Ananindeua, PA, Brasil.Universidade Federal do Pará. Faculdade de Medicina Veterinária. Castanhal, PA, Brasil.Universidade Federal do Pará. Faculdade de Medicina Veterinária. Castanhal, PA, Brasil.Universidade Federal do Pará. Faculdade de Medicina Veterinária. Castanhal, PA, Brasil.Universidade Federal do Pará. Faculdade de Medicina Veterinária. Castanhal, PA, Brasil.Universidade Federal do Pará. Faculdade de Medicina Veterinária. Castanhal, PA, Brasil.Universidade Federal do Pará. Faculdade de Medicina Veterinária. Castanhal, PA, Brasil.Universidade Federal do Pará. Faculdade de Medicina Veterinária. Castanhal, PA, Brasil.Universidade Federal do Pará. Faculdade de Medicina Veterinária. Castanhal, PA, Brasil.Universidade Federal do Pará. Faculdade de Medicina Veterinária. Castanhal, PA, Brasil.Due to the supposed involvement of minerals in cases of ruminant periodontitis, this study aimed to analyze the concentrations of phosphorus (P) in bone, and cobalt (Co), copper (Co), iron (Fe), zinc (Zn) and selenium (Se) in liver of a cohort of sheep affected or not by periodontitis. From an outbreak of the disease in 2011 in Pará state, Brazil, rib and liver samples were obtained from 22 sheep with periodontitis and seven samples from healthy animals. Based on the concentrations of the different minerals in the tissues, we concluded that there was no relationship between periodontal disease in sheep with any mineral deficiency status. In contrast, most of the minerals in the tissues were above or within the recommended concentrations in bone and liver. Within the various aspects which until now have been studied regarding periodontitis in ruminants, the results obtained here corroborate the fact that periodontal disease in sheep is an infectious disease and it is not a consequence of the deficiency or excess of mineral elements in the diet

Assessment of surface water in two Amazonian rivers impacted by industrial wastewater, Barcarena City, Pará State (Brazil)

In 2007, surface waters were collected from 21 sampling points in Barcarena City in Northern Region of Brazil: one sampling point located in a stream that receives discharge of wastewater from a kaolin processing industry and flows into the Curuperê River, three sampling points located near sources that emerge on the left bank and flow into the Curuperê River, nine sampling points in Curuperê River, which flows into the Dendê River, and eight in Dendê River, a tributary on the right bank of the Pará River. For all water samples were quantified 14 physicochemical variables and levels of 12 metals. The results in the points near the sources of the Curuperê River presented physicochemical profile and metal levels which are typical of surface waters being used as reference to compare and identify possible changes in the chemical characteristics of the other sampling points. The comparison between the results obtained for the sources of the Curuperê River and the ones for the point near the discharge of industrial wastewater revealed strong changes in the values of 6 physicochemical variables (pH, electrical conductivity (EC), total dissolved solids (TDS), sulfate (SO4), ammoniacal nitrogen (NH4-N) and salinity) and an increase in magnitude of the levels of four metals (Al, Fe, Mn and Zn). These facts characterized that the wastewaters were discharged into the environment without adequate treatment. Results in other sampling sites showed that these anomalous conditions were also found along the Curuperê and Dendê Rivers, especially during low tide. This chemical characterization of the waters allowed to identify harmful conditions to aquatic ecosystems and potential health risk for the local people, who use the rivers for drinking water, recreation and transportation

Seasonal changes in metal and nutrient fluxes across the sediment-water interface in tropical mangrove creeks in the Amazon region

Ministério da Ciência, Tecnologia e Inovações. Museu Paraense Emílio Goeldi. Belém, PA, BrazilMinistério da Ciência, Tecnologia e Inovações. Museu Paraense Emílio Goeldi. Belém, PA, BrazilUniversidade Federal Fluminense. Programa de Pós-Graduação em Geoquímica. Niterói, RJ, BrazilUniversité d’Angers. Nantes Université. Le Mans Université. Centre National de la Recherche Scientifique. Laboratoire de Planétologie et Géosciences. Angers, FranceSouthern Cross University. National Marine Science Centre. Coffs Harbour, New South Wales, AustraliaMinistério da Saúde. Secretaria de Vigilância em Saúde. Instituto Evandro Chagas. Laboratório de Toxicologia. Ananindeua, PA, BrasilUniversidade Federal do Pará. Programa de Pós-Graduação em Geologia e Geoquímica. Belém, PA, BrazilMangrove creeks are considered important routes between terrestrial and adjacent coastal waters regarding the transport of dissolved material to oceans. The present study assessed if Amazonian seasonal rainfall patterns affect the pore water biogeochemistry and the intensity and direction of nutrient (NH4+ and PO43−) and metal (Fe2+ and Mn2+) exchanges from intertidal creek mudflats fringed by pristine mangroves. The results indicate that mangrove-fringed mudflats are effective in retaining iron and nutrients in solid sediment phases compared to export to coastal waters, also potentially comprising a significant manganese contributor to coastal waters. However, nutrient and metal retention are lower during the wet season, as intense rainfall periods reduce pore water salinity and promote increased reducing sediment conditions. Such conditions enhance organic matter degradation and pore water NH4+, PO43−, Fe2+ and Mn2+ concentrations just below the sediment-water interface, generating higher effluxes during this period. Our findings demonstrate that seasonal variabilities drive substantial physicochemical property and pore water biogeochemistry changes, affecting the efficiency of mudflat sediments retaining and exporting nutrients and metals

Tratamento de búfalos deficientes em cobre, por intermédio da aplicação de cobre parenteral

Universidade Federal do Pará. Faculdade de Medicina Veterinária. Castanhal, PA, BrasilUniversidade Federal do Pará. Faculdade de Medicina Veterinária. Castanhal, PA, BrasilUniversidade Federal do Pará. Faculdade de Medicina Veterinária. Castanhal, PA, BrasilUniversidade Federal do Sul e Sudeste do Pará. Instituto de Estudos do Trópico Úmido. Xinguara, PA, BrasilUniversidade Federal do Pará. Faculdade de Medicina Veterinária. Castanhal, PA, BrasilMinistério da Saúde. Secretaria de Vigilância em Saúde. Instituto Evandro Chagas. Ananindeua, PA, Brasil.Universidade Federal do Pará. Faculdade de Medicina Veterinária. Castanhal, PA, BrasilUniversidade Federal Rural do Rio de Janeiro. Departamento de Epidemiologia e Saúde Pública. Seropédica, RJ, BrasilUniversidade Federal Rural do Rio de Janeiro. Departamento de Nutrição Animal e Pastagens. Seropédica, RJ, BrasilThe objective of this study was to investigate the effectiveness of the treatment of copper deficiency, by parenteral route, in buffalo calves raised on the Marajó Island (PA). Fourteen animals were divided into two groups. Group 1 received three doses of 120 mg of copper glycinate (20mgCu/mL), intramuscularly, on days 1, 45 and 90; in the group 2 (control) the animals were Not supplemented with copper. In both groups liver biopsies were performed on days 1 and 135. The diagnosis of copper deficiency was established through history, clinical signs, and by the analysis of hepatic copper content. In group 1, the mean hepatic copper content increased from 17.4±5.84mg/kgDM (before administration) to 311.2±133.5mg/kgDM (after 135 days) (P<0.05). In the control group, the mean of hepatic copper contents decreased from 17.1±3.4 to 9.11±1.1mg/kgDM at the end of the experiment (P<0.05). Based on the results, it was demonstrated that the administration of copper, by parenteral route, was efficient in the treatment of copper deficiency in buffalo calves and could become a very promising option for the reality of buffalo producers on the Island of Marajó

Activated carbon obtained from amazonian biomass tailings (acai seed): Modification, characterization, and use for removal of metal ions from water

Federal University of Pará. Graduate Program of Chemistry. Laboratory of Amazon Oils. Laboratory of Catalysis and Oilchemistry. Belém, PA, Brazil.Federal University of Amazonas. Department of Chemistry. Manaus, AM, Brazil.Federal University of Pará. Graduate Program of Chemistry. Laboratory of Amazon Oils. Laboratory of Catalysis and Oilchemistry. Belém, PA, Brazil / Ministério da Saúde. Secretaria de Vigilância em Saúde. Instituto Evandro Chagas. Ananindeua, PA, Brasil.Federal University of Pará. Graduate Program of Chemistry. Laboratory of Amazon Oils. Laboratory of Catalysis and Oilchemistry. Belém, PA, Brazil.Federal University of Pará. Graduate Program of Chemistry. Laboratory of Amazon Oils. Laboratory of Catalysis and Oilchemistry. Belém, PA, BrazilFederal University of Pará. Graduate Program of Chemistry. Laboratory of Amazon Oils. Laboratory of Catalysis and Oilchemistry. Belém, PA, BrazilFederal University of Pará. Graduate Program of Chemistry. Laboratory of Amazon Oils. Laboratory of Catalysis and Oilchemistry. Belém, PA, BrazilMinistério da Saúde. Secretaria de Vigilância em Saúde. Instituto Evandro Chagas. Ananindeua, PA, Brasil.Federal University of Pará. Graduate Program of Chemistry. Laboratory of Amazon Oils. Laboratory of Catalysis and Oilchemistry. Belém, PA, BrazilAcai seed was used herein as an Amazon biomass waste for the synthesis of activated and modified carbon in order to find a possible use for the large volume of residues generated during the processing of this fruit and to add value to this residue. Activated carbon materials were used to remove Pb2+, Fe2+, and Mg2+ metal ions from water. The efficiency of removal of these ions by the acai seed activated carbon was compared with that by commercial activated carbon. Activated carbon materials were prepared by carbonization and chemical activation using two KOH impregnation ratios, namely 1:1 (ACK1) and 5:1 (ACK5), by mass. These samples were modified by treatment with nitric acid under microwave heating (ACK1-M) and (ACK5-M), respectively. The result of the elemental analysis indicated that this biomass has carbon and sulfur contents of 43.29% and 0.10% wt, respectively. The textural parameters showed that the obtained activated carbon samples presented high surface areas between 1462 and 2774 m2 g−1. Raman analysis revealed the different degrees of graphitization of the activated carbon materials. Boehm titration identified the presence of phenolic, carboxylic, and lactonic groups in samples that were confirmed by Fourier transform infrared spectroscopy. In the metal adsorption tests, ACK5-M showed better removal efficiency, reaching 86% removal for Pb2+, 69% for Fe2+, and 8% for Mg2+in 1 h of contact time; these results were superior to those obtained for commercial carbon. The results indicated that acai seed can be used for the production of activated carbon and can also be used for metal removal