Encontrados 12 documentos, a visualizar página 1 de 2
Rapeseed oil‑rich diet alters hepatic mitochondrial membrane lipid composition ...
Monteiro, João P.; Pereira, Cláudia V.; Silva, Ana M.; Maciel, Elisabete; Baldeiras, Inês; Peixoto, Francisco; Domingues, Maria R.; Jurado, Amália S.Diet is directly related with physiological alterations occurring at a cell and subcellular level. However, the role of diet manipulation on mitochondrial physiology is still largely unexplored. Aiming at correlating diet with alterations of mitochondrial membrane composition and bioenergetics, Wistar-Han male rats were fed for 11, 22 and 33 days with a rapeseed oil-based diet and mitochondrial bioenergetics, a...
Resveratrol affects differently rat liver and brain mitochondrial bioenergetics...
Moreira, Ana C.; Silva, Ana M.; Santos, M. S.; Sardão, Vilma A.Resveratrol (3,5,40-trihydroxy-trans stilbene) is commonly recognized by its antioxidant properties. Despite its beneficial qualities, the toxic effects of this natural compound are still unknown. Since mitochondria are essential to support the energy-dependent regulation of several cell functions, the objective of this study was to evaluate resveratrol effects on rat brain and liver mitochondrial fractions fro...
Dental microevolution in Portuguese Neolithic and modern samples using an alter...
Fernandes, Daniel M.; Silva, Ana M.; Donnabhain, Barra O’; Pinhasi, DonMost studies of dental microevolution have used the standard methodologies employed in dental anthropology: buccolingual/mesiodistal lengths and the frequencies of non-metric dental traits. In this work we use the occlusal polygon method which is based on a polygon created by linking the four molar cusp apices using digital analysis. This method has been used to identify different evolutionary trends in Neander...
Unnatural benz-X-azolyl asparagine derivatives as novel fluorescent amino acids...
Esteves, Cátia I. C.; Silva, Ana M. F.; Raposo, M. Manuela M.; Costa, Susana P. G.A family of new asparagine derivatives bearing benzothiazole and benzimidazole units, functionalised with electron donor or acceptor groups, were synthesized in good to excellent yields. The photophysical characterization of these new heterocyclic amino acids was performed by UV-visible absorption and fluorescence emission studies and revealed that the compounds displayed remarkably high fluorescence quantum yi...
Feeding overlap in two sympatric species of Rhinella (Anura: Bufonidae) of the ...
Sabagh,Leandro T.; Carvalho-e-Silva,Ana M. P. T.A clear understanding of the relationships between overlapping, similarity, and competition is necessary to understand many of the questions about the structure and operation of a community. Rhinella icterica (Spix, 1824) and Rhinella crucifer (Wied Neuwied, 1821) are sympatric species of toads occurring in the National Park of Serra dos Órgãos in southeastern Brazil. The aim of the present study was to assess ...
The diet of Scinax angrensis (Lutz) tadpoles in an area of the Atlantic Forest ...
Sousa Filho,Izidro F. de; Branco,Christina C.; Carvalho-e-Silva,Ana M. P. Telles de; Silva,Guilherme R. da; Sabagh,Leandro T.Scinax angrensis (Lutz, 1973) is an endemic species, which occurs in low altitude hillside forests, distributed from the municipalities of Mangaratiba to Parati in the south of the state of Rio de Janeiro, Brazil. The aim of this study was to compare the morphology of S. angrensis tadpoles in two different stages of development, and verify their feeding spectrum. The mouth morphology of the two stages studied (...
Single electron transfer-degenerative chain transfer living radical polymerizat...
Coelho, Jorge F. J.; Silva, Ana M. F. P.; Popov, Anatoliy V.; Percec, Virgil; Abreu, Mariana V.; Gonçalves, Pedro M. O. F; Gil, M. H.Living radical polymerization of n-butyl acrylate was achieved by single electron transfer/degenerative-chain transfer mediated living radical polymerization in water catalyzed by sodium dithionate. The plots of number-average molecular weight versus conversion and ln[M]0/[M] versus time are linear, indicating a controlled polymerization. This methodology leads to the preparation of alpha,omega-di(iodo) poly (b...
Synthesis of poly(vinyl chloride)-b-poly(n-butyl acrylate)-b-poly(vinyl chlorid...
Coelho, Jorge F. J.; Silva, Ana M. F. P.; Popov, Anatoliy V.; Percec, Virgil; Abreu, Mariana V.; Gonçalves, Pedro M. O. F.; Gil, M. H.The synthesis of a block copolymer poly(vinyl chloride)-b-poly(n-butyl acrylate)-b-poly(vinyl chloride) is reported. This new material was synthesized by single-electron-transfer/degenerative-chain-transfer-mediated living radical polymerization (SET-DTLRP) in two steps. First, a bifunctional macroinitiator of alpha,omega-di(iodo)poly (butyl acrylate) [alpha,omega-di(iodo)PBA] was synthesized by SET-DTLRP in wa...
Nova espécie de Hyla Laurenti do grupo de H. microcephala Cope (Amphibia, Anura...
Carvalho-e-Silva,Sergio Potsch; Carvalho-e-Silva,Ana M. P. Telles; Izecksohn,EugenioA new species, attributed to the group of Hyla microcephala Cope, 1886, is described. The new species is close to H. bipunctata Spix, 1824, and it is found in Quebrangulo, State of Alagoas, in Northeastern Brazil. The eggs and larvae are also described and some ecological information is added. The new species is compared with other species of the same group, and with species of closely related groups that occur...
Chemical composition and anti-inflammatory activity of the hydrodistillate from...
Siani,Antonio C.; Silva,Ana M. P.; Nakamura,Marcos J.; De Carvalho,Márcia V.; Henriques,Maria G. M. O.; Ramos,Mônica F. S.; Kaiser,Carlos R.A mixture of the benzofuran remirol and the benzopyran isoevodionol (5.7:1) was extracted by hydrodistillation from rhizomes of Mariscus pedunculatus. They were purified by successive thin layer chromatography. Their structure elucidation were confirmed by 2D-NMR experiments. The structure of remirol was also confirmed by its hydrogenation product. Crude distillate and the pure compounds were screened for anti-...
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