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Respostas metabólicas e enzimáticas em jundiás, Rhamdia quelen (heptapteridae) e piavas Leporinus obtusidens (anostomidae) expostos a herbicidas utilizados na cultura do arroz
(Universidade Federal de Santa Maria, 2009-01-15)
The effects of the toxic exposure of fish to the herbicides clomazone (isoxazolidinone-Gamit®), quinclorac (quinoline-Facet®) and metsulfuron methyl (sulfonylurea-Ally®), used in rice fields were investigated. Experiments ...
Influência de produtos alimentícios ricos em fibra na biodisponibilidade de cádmio e de metais essenciais
(Universidade Federal de Santa Maria, 2009-12-21)
Dietary fibers can interfere in the bioavailability of mineral elements both negatively and positively. This has been the subject of several researches because there is a great interest in essential minerals; also, some ...
Efeitos protetores do zinco sobre alterações comportamentais e bioquímicas induzidas pelo mercúrio em ratos jovens
(Universidade Federal de Santa Maria, 2009-12-21)
Mercury is a toxic element that induces biochemical, neurological and behavioral changes, which can persist for a long time after the metal exposure. The contamination by mercury continues being a serious problem of public ...
Ditelureto de difenila induz prejuízos no desenvolvimento, neurotoxicidade e desmielinização no sistema nervoso central de filhotes de ratos wistar
(Universidade Federal de Santa Maria, 2009-11-20)
The purpose of this study was to investigate if myelinogenesis is related to the mechanism by which diphenyl ditelluride [(PhTe)2] causes toxicity in rat pups. The present study was performed to examine whether the behavioral ...
Agentes poliaminérgicos modulam a extinção do medo condicionado contextual em ratos
(Universidade Federal de Santa Maria, 2009-11-23)
Polyamines, such as spermidine and spermine, have been reported to improve memory retention through the activation of N-methyl-D-aspartate receptors (NMDAr).
However whether polyamine agonists and antagonists alter extinction ...
O envolvimento de proteínas quinases na facilitação do aprendizado espacial induzido por creatina
(Universidade Federal de Santa Maria, 2009-11-20)
Decline cognitive related to neurodegenerative diseases are very commom in patients, probably in function of aging. Since there are few effectives therapeutics
approaches to loss memory treatment, but studies about new ...
Efeito do resveratrol nos sistemas colinérgico e purinérgico em encéfalo de ratos diabéticos
(Universidade Federal de Santa Maria, 2009-03-13)
Diabetes mellitus is a major public health problem throughout the world. Besides the most common complications in the peripheral nervous system, diabetes may also cause a series of cognitive, structural and functional ...
Efeito do exercício agudo de curta duração na atividade da enzima δ-aminolevulinato desidratase em humanos
(Universidade Federal de Santa Maria, 2009-02-27)
Aerobic exercise of sufficient intensity and duration can result in increased generation of reactive oxygen species and exercise of extreme endurance may cause oxidative stress with a concomitant decreased activity of ...
O complexo metilmercúrio-cisteína altera o acúmulo de mercúrio em diferentes tecidos de camundongo
(Universidade Federal de Santa Maria, 2009-03-26)
Methylmercury (MeHg) is related to several deleterious effects on the vertebrate tissues, mainly on central nervous system, and part of these effects are through of interaction with sulfhydryl group found in cellular ...
Toxicologia e farmacologia in vitro de novos compostos orgânicos de selênio e telúrio com atividade tipo tiol peroxidase
(Universidade Federal de Santa Maria, 2009-05-08)
Glutathione peroxidase (GPx; EC 1.11.1.9) is a well-known selenoenzyme that catalyzes the reduction of hydrogen peroxide and some organic hydroperoxides by glutathione (GSH) and protects lipid membranes and other cellular ...