Methylmercury Compounds
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. EFEITOS DE COMPOSTOS ORGÂNICOS DE SELÊNIO FRENTE À TOXICIDADE INDUZIDA POR GLUTAMATO E METILMERCÚRIO / EFFECTS OF ORGANOSELENIUM COMPOUNDS AGAINST THE TOXICITY INDUCED BY GLUTAMATE OR METHYLMERCURY
Os compostos orgânicos de selênio têm sido propostos como potenciais agentes farmacológicos para o tratamento de patologias associadas ao estresse oxidativo. Em particular, o disseleneto de difenila e o ebselen têm sido demonstrados como potentes agentes antioxidantes em uma variedade de modelos experimentais. Dessa forma, os objetivos do presente estud
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/03/2012
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2. Organic and total mercury determination in sediments by cold vapor atomic absorption spectrometry: methodology validation and uncertainty measurements
The purpose of the present study was to validate a method for organic Hg determination in sediment. The procedure for organic Hg was adapted from literature, where the organomercurial compounds were extracted with dichloromethane in acid medium and subsequent destruction of organic compounds by bromine chloride. Total Hg was performed according to 3051A USEP
Química Nova. Publicado em: 2012
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3. Análise de células bipolares PKCa-IR e células ganglionares da retina do peixe tropical Hoplias malabaricus intoxicado com baixas doses agudas de metilmercúrio / Not informed by the author
O presente trabalho tem por objetivo analisar o efeito do metilmercúrio na retina de peixe tropical Hoplias malabaricus (Traíra) através de baixas doses agudas. As intoxicações foram realizadas, por meio de injeção intraperitoneal, nas doses de 0,01, 0,05, 0,1 e 1,0 g/g, com um período de quinze dias de depuração do MeHg. Após o término do perío
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/08/2011
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4. Protective effects of organoselenium compounds against methylmercury-induced oxidative stress in mouse brain mitochondrial-enriched fractions
We evaluated the potential neuroprotective effect of 1-100 µM of four organoselenium compounds: diphenyl diselenide, 3’3-ditri-fluoromethyldiphenyl diselenide, p-methoxy-diphenyl diselenide, and p-chloro-diphenyl diselenide, against methylmercury-induced mitochondrial dysfunction and oxidative stress in mitochondrial-enriched fractions from adult Swiss mo
Brazilian Journal of Medical and Biological Research. Publicado em: 2011-11
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5. Cytotoxicity and genotoxicity of low doses of mercury chloride and methylmercury chloride on human lymphocytes in vitro
Mercury is a xenobiotic metal that is a highly deleterious environmental pollutant. The biotransformation of mercury chloride (HgCl2) into methylmercury chloride (CH3HgCl) in aquatic environments is well-known and humans are exposed by consumption of contaminated fish, shellfish and algae. The objective of the present study was to determine the changes induc
Brazilian Journal of Medical and Biological Research. Publicado em: 2005-06
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6. ASSESSMENT OF MERCURY (II) SPECIES BIOAVAILABILITY USING A BIOLUMINESCENT BACTERIAL BIOSENSOR
Mercury and its compounds are highly toxic, especially methylmercury - a potent neurotoxin. It has caused a significant number of human fatalities in several accidents around the world. Due to its wide dispersion through the atmosphere, mercury is considered a global pollutant, being deposited even in remote pristine aquatic systems, where it is biomagnified
Publicado em: 2003
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7. Methylmercury Resistance in Desulfovibrio desulfuricans Strains in Relation to Methylmercury Degradation
Two strains of Desulfovibrio desulfuricans, one known to synthesize monomethylmercury from ionic mercury, were grown to determine methylmercury toxicity and for comparison with an anaerobic strain of Clostridium pasteurianum, a H2 producer, and with the broad-spectrum mercury-resistant Pseudomonas putida strain FB-1, capable of degrading 1 μg of methylmercu
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8. Psychiatric aspects of methylmercury poisoning
Forty-three patients with methylmercury poisoning were studied; 74·4% showed some degree of depression. Their blood levels of mercury were higher than the average values for the whole group, and considerably higher than the blood levels of the non-depressed patients. Irritability was observed in 44·2% of the patients, all except one of the 19 being under 3
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9. Subcellular Targeting of Methylmercury Lyase Enhances Its Specific Activity for Organic Mercury Detoxification in Plants1
Methylmercury is an environmental pollutant that biomagnifies in the aquatic food chain with severe consequences for humans and other animals. In an effort to remove this toxin in situ, we have been engineering plants that express the bacterial mercury resistance enzymes organomercurial lyase MerB and mercuric ion reductase MerA. In vivo kinetics experiments
American Society of Plant Biologists.