Toxicity Of Iron
Mostrando 13-24 de 122 artigos, teses e dissertações.
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13. Intravenous iron therapy: how far have we come?
Oral iron supplementation is usually the first choice for the treatment of iron deficiency anemia (IDA) because of its effectiveness and low cost. But unfortunately in many iron deficient conditions, oral iron is a less than the ideal treatment mainly because of adverse events related to the gastrointestinal tract as well as the long course required to treat
Revista Brasileira de Hematologia e Hemoterapia. Publicado em: 2011-12
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14. Chemical constituents and evaluation of the toxic and antioxidant activities of Averrhoa carambola leaves
The liquid-liquid partitioning of a crude hydroalcoholic extract of Averrhoa carambola L., Oxalidaceae, leaves led to the isolation of a sterol and three flavone C-glycosides. From the n-hexane fraction β-sitosterol was isolated and from the ethyl acetate fraction apigenin-6-C-β-L-fucopyranoside (1) and apigenin6-C-(2"-O-α-L-rhamnopyranosyl)-β-L-fucopyra
Revista Brasileira de Farmacognosia. Publicado em: 29/11/2011
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15. Quantificação de antimônio em garrafas de politereftalato de etileno (PET) brasileiras por fluorescência de raios-X e avaliação quimiométrica para verificar a presença de pet reciclado através do teor de ferro
Antimony is a common catalyst in the synthesis of polyethylene terephthalate used for food-grade bottles manufacturing. However, antimony residues in final products are transferred to juices, soft drinks or water. The literature reports mentions of toxicity associated to antimony. In this work, a green, fast and direct method to quantify antimony, sulfur, ir
Química Nova. Publicado em: 2011
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16. Arsênio em plantas aquáticas: absorção, toxicidade, nutrição e metabolismo da glutationa / Arsenic in aquatic plants: absorption, toxicity, nutrition and glutathione metabolism
Arsenic (As) toxicity and its effects on glutathione metabolism were analyzed in two vegetal specimens: Lemna gibba and Salvinia minima. Plants were cultivated in nutrient solution, pH 6.5, and exposed to arsenic concentrations of 0.0 and 1.0 mg L-1, for three days. Both species accumulated As in their tissues when exposed to this element, being this accumul
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/10/2010
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17. Cádmio, chumbo e ferro em colostro e a relação com fatores socioeconômicos e de estilo de vida das puérperas em maternidade de Goiânia-GO / Cadmium, lead and iron in colostrum and the relationship with socioeconomic factors and lifestyle of the mothers at the maternity of Goiânia-GO
Introdução: considerando a importância do ferro para saúde do lactente e, sabendo que, além de nutrientes essenciais ao recém-nascido, o leite pode conter contaminantes (cádmio e chumbo) provenientes de exposição ao ambiente e da alimentação durante a gestação, evidencia-se a relação entre esses fatores e metais pesados encontrados no colostro
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/06/2010
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18. Amalgam tattoo: a cause of sinusitis?
Little attention has been paid to the toxicity of silver amalgam fillings, which have been used over the centuries in Dentistry. Amalgam particles may accidentally and/or traumatically be embedded into the submucosal tissue during placement of a restoration and perpetuate in such area. This article presents a case of amalgam tattoo and investigates whether i
Journal of Applied Oral Science. Publicado em: 2010-02
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19. Daño oxidativo en la microalga Pseudokirchneriella subcapitata expuesta a aguas receptoras de un efluente minero en del Río Blanco (V Región, Chile)
In this investigation antioxidant response and toxicity of metals in receiving water effluent miner in the Blanco river in Pseudokirchneriella subcapitata was assessed. The catalase activity, lipid damage through Tbars, the growth rate of was determined. The result showed an inhibition of the growth rate of P. subcapitata which correlated with increased cata
Química Nova. Publicado em: 2009
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20. Estudo da biodistribuição e biocompatibilidade de nanopartículas magnéticas à base de maguemita recobertas com DMSA em macacos-prego (Cebus spp.) juvenis mediante análise morfológica
It is essential to determine the biodistribution and biocompatibility of magnetic nanoparticles (MNPs) for in vivo biomedical applications in order to ensure their safe clinical use. Biodistribution of MNPs depends on their properties, such as surface characteristics, size, shape and charge, which can all affect biodistribution, clearance, particle-cell inte
Publicado em: 2009
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21. Ferritin gene expression and antioxidant response of two Coffea arabica cultivars exposed to iron and aluminium / Expressão de genes da ferritina e resposta antioxidante em duas cultivares de Coffea arabica expostas a ferro e aluminio
Ferritin is a protein capable to store iron (Fe) atoms in a nontoxic form, controlling the level of this metal in the cells. In humans, ferritin is able to accommodate aluminium (Al) atoms, avoiding its toxicity. Considering that Coffea arabica plants are able to grow well in acidic soils with high Al and suspension cells treated with this same metal showed
Publicado em: 2009
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22. Physiological, biochemical and histochemical evaluations of Ipomoea pes-caprae cultivated at different concentrations of iron / Avaliações fisiológicas, bioquímicas e histoquímica de Ipomoea pes-caprae cultivada em diferentes concentrações de ferro
The aim of this study was to evaluate the effects of excess iron over Ipomoea pescaprae, a native species common to Restinga. Saplings presenting three pairs of leaves were grown under 2, 3, 4 and 5 mM Fe-EDTA concentrations in Hoagland solution at half strength. After seven days, it was evaluated the accumulation of iron in plant tissues, alterations in the
Publicado em: 2008
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23. COMPLEXOS METÁLICOS DE 2-PIRIDINOFORMAMIDA TIOSSEMICARBAZONAS: ESTUDOS EM SOLUÇÃO, NO ESTADO SÓLIDO E ATIVIDADE CITOTÓXICA / METAL COMPLEXES OF 2-PYRIDINEFORMAMIDE THIOSEMICARBAZONES: SOLUTION STUDIES, SOLID STATE STUDIES AND CYTOTOXIC ACTIVITY.
Thiosemicarbazones and their metal complexes present a wide range of bioactivities. It has been shown that the antitumoral action of á(N)-heterocyclic thiosemicarbazones occurs through the inhibition of ribonucleotide diphosphate reductase (RDR), a key enzyme involved in the conversion of ribonucleotides into deoxyribonucleotides during DNA syntheses. The a
Publicado em: 2008
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24. Avaliação in vitro da atividade antitumoral de compostos de coordenação de ferro
Neoplasias are the third leading cause of death in Brazil and death by cancer is estimated to reach the most important death cause in Brazil at the middle of this century. Nowadays cancer causes nearly 7 million deaths every year (12.5%) worldwide, although several cancer therapies are available. In this work we studied the antitumoral activity of three iron
Publicado em: 2008