RESUMO
The numeration of the chromosomes, which can be used to describe the karyotypes of various chromosomal forms from different geographical regions, has been proposed for the Maximowicz's vole Microtus maximowiczii. Application of FISH analysis has allowed us to show homology of Robertsonian rearregement (11/20) inkaryotypes of voles from Transbaikalia (2n = 41 and voles from Norsky reservation in Amur Region (2n = 40).
Assuntos
Arvicolinae/genética , Cromossomos de Mamíferos , Animais , Arvicolinae/classificação , Evolução Biológica , Hibridização in Situ Fluorescente , Cariotipagem , Filogenia , Sibéria , Especificidade da EspécieRESUMO
Rats were fed for two weeks low-selenium semi-synthetic diet supplemented with different sources of selenium: sodium selenite (selenium concentration 96 and 350 mcg/kg diet), selenium-enriched Spirulina (selenium concentration 350 mcg/kg diet) and selenium-enriched Phycocyanin (selenium concentration 96 mcg/kg diet). Selenium bioavailability was evaluated in terms of selenium accumulation in blood and liver as well as glutathione peroxidase activity. It was shown that selenium from selenium-enriched Spirulina and selenium-enriched phycocyanin was high bioavailable in rats.
Assuntos
Suplementos Nutricionais , Ficocianina , Selenito de Sódio/farmacocinética , Spirulina , Animais , Disponibilidade Biológica , Glutationa Peroxidase/metabolismo , Masculino , Ratos , Ratos WistarRESUMO
Antioxidant properties of phycocyanin and selenium enriched phycocyanin were evaluated by using FRAP assay, inhibition of luminol oxidation in Hb - H2O2 system and inhibition of induced microsomal lipid peroxidation. In different model systems phycocyanin revealed antioxidant activity wich was comparable with antioxidant activity of bilirubin and Trolox. Inclusion of selenium into phycocyanin did not influence significantly its antioxidant properties.