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Avaliação dos efeitos de compostos orgânicos de selênio e de telúrio sobre a integridade estrutural e funcional de células sangüíneas humanas
(Universidade Federal de Santa Maria, 2009-01-09)
In view of the need to expand the toxicologic studies of organochalcogens in biological systems, the aim of this study was to investigate the effect of exposure to
organic compounds of selenium (Se) and tellurium (Te) on ...
Efeito inibitório do Ebselen, do disseleneto de difenila e do ditelureto de difenila sobre a atividade da LDH de mamíferos
(Universidade Federal de Santa Maria, 2009-02-09)
Ebselen is a seleno compound whose antioxidant properties have been
attributed to its thiol-peroxidase and thioredoxin-like activity: it decomposes
peroxides at the expense of reduced thiols. However, the excessive ...
Avaliação dos mecanismos envolvidos na ação antinociceptiva causada pelo seleneto vinílico bis substituído (SVBS) em camundongos
(Universidade Federal de Santa Maria, 2009-03-24)
The interest in organoselenium biochemistry and pharmacology has increased in the last two decades due to a variety of organoselenium compounds that possess biological activity. Accordingly, bis selenide is known as a safe ...
Atividade hipolipidêmica do disseleneto de difenila na hiperlipidemia induzida por Triton WR-1339 em camundongos
(Universidade Federal de Santa Maria, 2009-11-26)
In mammals, the liver plays a central role in whole-body lipid metabolism. Unfortunately, dysregulation of these pathways has been implicated in hyperlipidemias. In recent years, a significant association between the trace ...
Mecanismos envolvidos no efeito antioxidante do disseleneto de difenila no dano oxidativo causado pela exposição à fumaça do cigarro em ratos jovens
(Universidade Federal de Santa Maria, 2009-09-09)
Cigarette smoking is a complex mixture of many constituents identified, among them reactive substances (reactive oxygen and nitrogen species), which are capable of initiating or promoting oxidative damage. Lungs and brain ...
Efeito de compostos orgânicos de selênio em modelos experimentais de câncer e diabetes mellitus
(Universidade Federal de Santa Maria, 2006-03-16)
This study was designed to determine the effect of organoselenium compounds on experimental models of cancer and diabetes. In mammary carcinogenesis induced by N-nitroso-N-methylurea (NMU, 3 doses of 50 mg/kg, i.p.), it ...
Modulação do sistema glutamatérgico em plaquetas: efeito de metais pesados e organocalcogênios
(Universidade Federal de Santa Maria, 2007-01-19)
Research strategies have been developed to characterize parameters in peripheral tissues that might easily be measured in humans as surrogate markers of damage, dysfunction or interactions involving neural targets of ...
Efeitos da exposição materna ou paterna ao disselento de difenila sobre o desenvolvimento intra-uterino da prole de ratas wistar
(Universidade Federal de Santa Maria, 2006-07-27)
Selenium (Se) is an essential trace element for man and is known for its role in regulating growth and development of the fetus and newborn. Furthermore, Se is a micronutrient required for normal spermatogenesis and, ...
Atividade antioxidante do e-1,1-metiltio-selenofenil-2-pirrolidinona-hepteno: um composto orgânico de selênio com baixa toxicidade
(Universidade Federal de Santa Maria, 2007-04-20)
The objective of this work was to evaluate the antioxidant activity of (E)-1-(1-(methylthio)-1-selenopheny) hept-1-en-2-yl) pyrrolidin-2-one: an organoselenium compound with low toxicity (compound 1). A number of parameters ...
Envolvimento do estresse oxidativo nas convulsões induzidas por disseleneto de difenila em ratos jovens
(Universidade Federal de Santa Maria, 2007-08-01)
Seizures can occur at any age, affecting at least 1-2% of the world population, they are far more common in children than adults. Prolonged seizures in the early developmental period can cause brain damage and lead to ...